JP2016089416A - Free access floor and cooling and heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a free access floor and a cooling and heating system that allows easy access to underfloor after installation.SOLUTION: A free access floor 1 has a floor board 10 which is placed on a foundation floor B with a space between them, and a floor structure member 20 supporting the floor board 10. The floor structure member 20 has a frame part 21 supporting a circumference of the floor board 10 and leg parts 29 in contact with the foundation floor B and supporting the frame part 21. A through hole 21h enabling access to the foundation floor B from above is formed inside the frame part 21. A floor board 10 is detachably formed on the frame part 21. When the floor board 10 is mounted on the frame part 21, the through hole 21h is covered. Thus, easy access to underfloor is realized without moving the floor structure member 20, after the free access floor 1 is laid on the foundation floor B. A cooling and heating system comprises the free access floor 1 and an air temperature controller that controls the temperature of air supplied to a rear side space between the floor board 10 and the foundation floor B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a free access floor and an air conditioning system, and more particularly to a free access floor that can be easily accessed under the floor after laying and an air conditioning system including the free access floor.

  Free access floors can be broadly divided into two types: a type in which a column is placed on the floor and a plate-like panel is placed on the column, and a type in which a block in which the column and the panel are integrated are spread. The laying type has an advantage that it can be quickly and easily constructed as compared with a structure in which the support and the panel are separate (for example, see Patent Document 1).

JP-A-11-324288

  However, after installing a floor-type free access floor, if additional floor rolling equipment such as electric wires is installed under the floor, the free access floor that has already been installed will be lifted to the position where the floor rolling equipment will be installed. Necessary. Moreover, if the installed free access floor is lifted and the floor rolling equipment is installed and then returned to the original position, a gap is generated between the free access floor and the adjacent free access floor. If there is a gap between adjacent free access floors, for example, when an earthquake occurs, the free access floors may be irregularly arranged.

  In view of the above-described problems, an object of the present invention is to provide a free access floor that can be easily approached under the floor after laying, and an air conditioning system that performs air conditioning using the floor.

  In order to achieve the above object, the free access floor according to the first aspect of the present invention includes a floor board 10 installed at a distance from the foundation floor B, as shown in FIGS. 1 and 2, for example; A floor structure member 20 that supports the floor plate 10; the floor structure member 20 includes a frame portion 21 that supports the outer periphery of the floor plate 10; and a leg portion 29 that contacts the foundation floor B and supports the frame portion 21; When the floor structural member 20 is placed on the foundation floor B, a through hole 21h that can approach the foundation floor B from above is formed on the inside of the frame portion 21; The through-hole 21h is configured to be closed when the floor board 10 is attached to the frame portion 21.

  If comprised in this way, since the floor board is comprised so that attachment or detachment is possible with respect to a frame part, after laying a free access floor on a foundation floor, it can approach a foundation floor simply, without moving a floor structure member. .

  Moreover, the free access floor which concerns on the 2nd aspect of this invention is a free access floor which concerns on the said 1st aspect of this invention, for example, as shown in FIG.1 and FIG.2, the floor board 10 dissipates heat. A heat collecting plate 30 that includes the heat radiating plate 11 and is in contact with the heat radiating plate 11, and further includes a heat collecting plate 30 that projects from the floor plate 10 to the leg side 29.

  If comprised in this way, when a heat carrier is made to flow between a foundation floor and a floor board, the heat which a heat carrier has can be dissipated from a heat sink via a heat-collecting board, and the heat dissipated The space above the floorboard can be air-conditioned.

  In addition, the free access floor according to the third aspect of the present invention is a floor structure member in the free access floor according to the first aspect or the second aspect of the present invention as shown in FIGS. 1 and 2, for example. A partition member 40 is provided that partitions the space S formed between the frame portion 21 and the foundation floor B when 20 is placed on the foundation floor B.

  If comprised in this way, the flow path of a heat carrier can be formed between a foundation floor and a floor board.

  Moreover, the air conditioning system which concerns on the 4th aspect of this invention is the free access floor 1 which concerns on any one aspect of the said 1st aspect thru | or 3rd aspect of this invention, as shown, for example in FIG. An air temperature adjuster 91 that adjusts the temperature of the air A supplied to the back space S (for example, see FIG. 2) between the floor board 10 (for example, see FIG. 2) and the foundation floor B (for example, see FIG. 2) is provided. .

  If comprised in this way, the heat of the air which flows through back side space can be radiated | emitted to the space on a floor board via a floor board, and an air conditioning system with high heat-transfer efficiency can be constructed | assembled simply.

  According to the present invention, since the floor board is configured to be detachable from the frame portion, it is possible to easily approach the foundation floor without moving the floor structure member after laying the free access floor on the foundation floor. .

It is a disassembled perspective view of the OA floor which concerns on the 1st Embodiment of this invention. It is a vertical sectional view of the OA floor according to the first embodiment of the present invention. It is a schematic block diagram of the air conditioning system which concerns on the 2nd Embodiment of this invention. It is a disassembled perspective view of the OA floor which concerns on the modification of the 1st Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or similar members are denoted by the same or similar reference numerals, and redundant description is omitted.

  First, a free access floor 1 (hereinafter referred to as “OA floor 1”) according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of the OA floor 1. FIG. 2 is a vertical sectional view of the OA floor 1. In the present embodiment, the OA floor 1 has a structure that contributes to the cooling and heating of the cooling and heating room R that is the target of cooling or heating (hereinafter referred to as “cooling and heating”). The OA floor 1 includes a floor plate 10, a floor structure member 20 (hereinafter referred to as “base member 20”), a heat collection plate 30, and a partition member 40.

  The floor plate 10 includes a heat radiating plate 11 and a top plate 12. The heat sink 11 is a member that constitutes the surface of the OA floor 1 on the side of the air conditioning room R so that heat can be radiated toward the air conditioning room R. The heat radiated toward the cooling / heating room R is cold during cooling and warm during heating. During cooling, the heat sink 11 whose temperature is lower than that of the surroundings absorbs heat from the surroundings to obtain a refreshing feeling. However, for convenience, the heat sink 11 is expressed as radiating cold. The heat radiating plate 11 is formed by cutting a thin plate member into an appropriate size, and is formed in a square shape in the present embodiment. From the viewpoint of increasing the amount of heat radiated to the cooling / heating room R, the heat radiating plate 11 is preferably formed of a material having high thermal conductivity. As the heat radiating plate 11, aluminum, a steel plate, an aluminum-coated resin plate, or the like can be used.

  The top plate 12 is a flat plate-like member that supports the heat-radiating plate 30 and supports the heat-collecting plate 30. The top plate 12 is formed slightly smaller than the heat radiating plate 11. Therefore, in the present embodiment, the top plate 12 is formed in a square shape. Here, one direction of a straight line that is parallel to one side of the top plate 12 and extends along the surface of the top plate 12 is defined as a reference direction D for convenience. The top plate 12 is formed to a thickness capable of receiving a load from the cooling / heating chamber R, and is typically thicker than the heat radiating plate 11. As the top plate 12, a resin, a structural wood laminated material, a steel plate, or the like can be used. The top plate 12 is formed with a slit-like insertion hole 12h. The insertion hole 12h is formed in a size that allows the heat collecting plate 30 to be inserted. In the present embodiment, a total of four insertion holes 12h are formed at the following positions. Prior to specifying the position of the insertion hole 12h, first, a pair of sides of the top plate 12 extending in the reference direction D are connected to each other by two points, and the top plate 12 is virtually divided into two. A total of four insertion holes 12h are formed, two on each of the virtually divided surfaces. All the insertion holes 12h are elongated in the reference direction D. The distance GA between the two insertion holes 12h formed on one side of the top plate 12 virtually divided into two as described above is equal to the distance GB between the two insertion holes 12h formed on the other side. ing. However, the two insertion holes 12h formed on one side of the top plate 12 virtually divided into two as described above are virtual straight lines traced in the reference direction D from the two insertion holes 12h formed on the other side. It is formed with a deviation from the above.

  The base member 20 is a member that supports the floor board 10. For convenience of description of the base member 20, the base member 20 is divided into a frame portion 21 and a leg portion 29. In addition, the frame part 21 and the leg part 29 are integrally formed in this Embodiment. The frame portion 21 is a portion that supports the floor board 10. The frame portion 21 has a structure in which a brace 25 that connects midpoints of opposite sides of the outer peripheral frame 23 is provided with respect to the outer peripheral frame 23 corresponding to the outer periphery of the square. In the present embodiment, the outer peripheral frame 23 is configured to support the entire outer periphery of the floor board 10. With this structure, a through hole 21 h is formed in the frame portion 21 between the outer peripheral frame 23 and the brace 25. The through holes 21h are formed in two rows and two columns, for a total of four locations. All the through holes 21h are formed inside the outer peripheral frame 23 (the outer periphery of the frame portion 21). The size of the frame portion 21 can be appropriately determined according to the situation where the OA floor 1 is laid, such as the load resistance of the air conditioning room R, but in the present embodiment, one side is a square of 290 mm, The thickness is 25 mm.

  The outer periphery of the outer peripheral frame 23 is formed in a square shape with one side of 290 mm. In the outer peripheral frame 23, a heat sink hollow 23a that is lowered from the top surface 23t by the thickness of the heat sink 11 is formed over the entire inner periphery of the top surface 23t. The heat sink hollow 23a is formed in a plane parallel to the top surface 23t. The outer periphery (the inner periphery of the top surface 23 t) of the heat sink recess 23 a is formed in a square shape, and the size thereof is substantially the same as the outer periphery of the heat sink 11. Here, the size being substantially the same means that the heat radiating plate 11 can be attached to and detached from the heat radiating plate recess 23a, and play is as small as possible.

  Inside the heat sink recess 23a, a top plate recess 23b, which is lowered from the heat sink recess 23a by the thickness of the top plate 12, is formed over the entire inner periphery of the heat sink recess 23a. The top plate recess 23b is formed in a plane parallel to the heat sink recess 23a. The outer periphery of the top plate recess 23 b (the inner periphery of the heat sink recess 23 a) is formed in a square shape, and the size thereof is substantially the same as the outer periphery of the top plate 12. Here, the size is substantially the same, which means that the top plate 12 can be attached to and detached from the top plate recess 23b, and play is as small as possible. The upper surface 25t of the brace 25 is aligned with the height of the top plate recess 23b. In other words, the top plate recess 23b and the upper surface 25t of the brace 25 are formed on the same plane.

  A partition fitting recess 23c into which the partition member 40 can be fitted is formed inside the top plate recess 23b. The partition fitting recess 23c is not formed in the brace 25 portion. The partition fitting recess 23c faces the through hole 21h. Each of the four through holes 21 h formed in the frame portion 21 has two adjacent sides of the square facing the outer peripheral frame 23, and the other two adjacent sides facing the brace 25. Therefore, the partition fitting recess 23c is formed at two places per one through hole 21h, and is formed at eight places per one outer peripheral frame 23. The partition fitting recess 23c is formed to have the same length as the length of one side of the through hole 21h. The partition fitting recess 23c is lowered from the top plate recess 23b by the thickness of the partition member 40 described later.

  On the outer surface of the outer peripheral frame 23, one fitting groove 21g and one fitting projection 21p are formed on each of the four surfaces. When the fitting groove 21g and the fitting projection 21p are directly opposed to the base member 20 with the leg portion 29 down, the fitting groove 21g is formed on the left side and the fitting projection 21p is formed on the right side of each surface. Has been. The distance from the left end of the outer peripheral frame 23 to the fitting groove 21g and the distance from the right end of the outer peripheral frame 23 to the fitting protrusion 21p when facing the base member 20 with the leg portion 29 facing down are the same. The fitting groove 21g and the fitting protrusion 21p are formed at such a position. The fitting groove 21g and the fitting protrusion 21p are formed so that the surface on which the fitting protrusion 21p is fitted is the outer periphery when the fitting protrusion 21p is cut along the outer surface of the outer peripheral frame 23 and fitted into the fitting groove 21g. It is formed so as to be flush with the outer surface of the frame 23. Since the fitting groove 21g and the fitting projection 21p are formed in this way, when the two base members 20 are arranged so that the outer surfaces of the outer peripheral frame 23 are in contact with each other, the fitting of the one base member 20 is performed. The groove 21g and the fitting protrusion 21p of the other base member 20 are fitted, and the fitting protrusion 21p of the one base member 20 and the fitting groove 21g of the other base member 20 are fitted. ing.

  The leg portions 29 are formed so as to extend at right angles to the surface of the frame portion 21 from the four corners of the frame portion 21, the midpoint of each side of the frame portion 21, and the center of gravity of the frame portion 21 in plan view. Has been. Accordingly, in the present embodiment, the leg portion 29 has nine legs. Most of the legs constituting the leg portion 29 from the ground contact surface to the surface of the foundation floor B (hereinafter referred to as “foundation floor surface Bf”) are formed in a square column shape having a square section. The size of the cross-sectional square of each leg is such that one side of the cross-sectional square is the same as the width of the brace 25. The four legs connected to the four corners of the outer peripheral frame 23 have two side surfaces out of the four side surfaces of the quadrangular prism shape that are flush with the outer surface of the outer peripheral frame 23. Of the four legs connected to the midpoints of the four sides of the outer peripheral frame 23, one of the four sides of the quadrangular prism is flush with the outer surface of the outer peripheral frame 23. The nine legs constituting the leg portion 29 are connected to the outer peripheral frame 23 or the brace 25 at an angle of 45 degrees.

  In the present embodiment, the base member 20 having the frame portion 21 and the leg portion 29 is formed of a synthetic resin from the viewpoint of simplification of manufacturing and weight reduction in consideration of efficiency during transportation. It may be formed of wood laminated lumber, steel plate or the like. The base member 20 is configured such that the floor plate 10 placed on the frame portion 21 is arranged at an interval from the foundation floor surface Bf by placing the leg portions 29 on the foundation floor surface Bf. ing. In the following description of the OA floor 1, when referring to the relationship with the foundation floor surface Bf or the air conditioning room R, unless otherwise specified, the description of the state in which the legs 29 are placed on the foundation floor surface Bf is provided. Suppose you are. When the OA floor 1 is installed on the foundation floor surface Bf, an underfloor space S as a back side space is formed between the floor board 10 and the foundation floor surface Bf.

  The heat collecting plate 30 is attached to the floor plate 10 so as to protrude into the underfloor space S while being in contact with the heat radiating plate 11, so that the air flowing through the underfloor space S is adjusted (hereinafter referred to as “temperature-controlled air A”). ) Is a member that collects the heat possessed by and transmits the heat to the heat sink 11. The heat collecting plate 30 is typically formed by bending a rectangular (rectangular or square) thin plate member at a right angle. One surface of the heat collecting plate 30 bent at a right angle is inserted into the insertion hole 12 h of the top plate 12. Thereby, one surface of the heat collecting plate 30 protrudes under the floor space S, and the other surface is placed on the top plate 12. The heat collecting plate 30 and the heat radiating plate 11 are brought into contact with each other by placing the heat radiating plate 11 on the top plate 12 into which the heat collecting plate 30 is inserted into the insertion hole 12h. The heat collecting plate length L, which is the length of the heat collecting plate 30 in the reference direction D, is formed to a length that can exhibit a desired leading edge effect. Here, the leading edge effect is such that when the temperature-controlled air A flows along the heat collecting plate 30, the thickness increases on the heat transfer surface (surface of the heat collecting plate 30) thinly at the leading edge and going downstream. When the boundary layer is formed, it is an effect that can be enjoyed by using the front edge portion of the heat collecting plate 30 with good heat transfer. In the present embodiment, the heat collection plate length L is formed to be approximately 1/3 of the length of one side of the top plate 12. From the viewpoint of enjoying a desired leading edge effect, the top plate 12 has the length of the insertion hole 12h in the reference direction D determined based on the heat collecting plate length L. The degree of protrusion of the heat collection plate 30 (height in the underfloor space S) is such that the temperature adjustment air A is efficient on the side of the heat collection plate 30 from the viewpoint of increasing the heat transfer from the temperature adjustment air A to the heat collection plate 30 as much as possible. It is preferable to increase the surface area of the heat collecting plate 30 by increasing the protrusion amount as much as possible within a well flowing range. The length in the direction orthogonal to the reference direction D of the heat collecting plate 30 on the top plate 12 is a length that can transmit necessary heat to the heat radiating plate 11 while avoiding overlapping with the adjacent heat collecting plate 30. Is formed. The heat collecting plate 30 is preferably formed of a material having high thermal conductivity from the viewpoint of increasing the amount of heat collected from the temperature-controlled air A. As the heat collecting plate 30, aluminum, a steel plate, an aluminum-coated resin plate, or the like can be used. The heat collecting plate 30 can be a thin plate-like member on which protrusions such as a flat plate, punching metal, and fins are formed. In addition, the punching metal can use what formed many 1 type or 2 types or more of holes, such as a long hole, a round hole, and a square hole.

  The partition member 40 is a member that forms the side wall of the flow path of the temperature-controlled air A. The partition member 40 is formed by bending a thin plate-like member having a rectangular basic structure at a right angle. The partition member 40 bent at a right angle is formed such that one surface thereof is fitted to the partition fitting recess 23 c of the outer peripheral frame 23 of the base member 20. The other surface of the partition member 40 is formed in such a dimension that the lower end of the partition member 40 is substantially in contact with the foundation floor surface Bf when one surface is fitted in the partition fitting recess 23c. The partition member 40 has a penetration permitting part that allows a floor rolling facility such as an electric wire laid on the foundation floor surface Bf to penetrate the lower part of the other surface when one surface is attached to the partition fitting recess 23c. 41 is formed. The penetration permission portion 41 is formed in a goodwill shape by making a vertical cut along the lower side of the other surface of the partition member 40. When the partition member 40 is formed of a flexible synthetic resin, the penetration permission portion 41 is deformed along the floor rolling facility, and the partition member 40 is formed of a plastically deformed material such as a metal plate. If it is, it will be bent according to the floor rolling equipment. Although the height of the penetration permission part 41 should just be determined according to floor rolling facilities, such as an electric wire laid in the foundation floor surface Bf, it is about 1 / 4-1 / of the height of the other surface of the partition member 40. 2, typically 1/3.

  Next, with reference to FIG. 3, the air conditioning system 100 which concerns on the 2nd Embodiment of this invention is demonstrated. FIG. 3 is a diagram illustrating a schematic configuration of the air conditioning system 100. The air conditioning system 100 includes a plurality of OA floors 1 described so far, and an air conditioner 91 as an air temperature adjuster that generates temperature-controlled air A by adjusting the temperature of the air. In the following description of the air conditioning system 100, when referring to the configuration of the OA floor 1, FIGS. 1 and 2 will be referred to as appropriate. In this embodiment, the air conditioner 91 is a general-purpose room air conditioner and is installed on the ceiling of the air conditioning room R. In FIG. 3, for convenience of explanation, the boundary of the portion of each OA floor 1 where the partition member 40 is not provided is indicated by a broken line, and the boundary of the portion where the partition member 40 is provided is indicated by a solid line (however, Excluding the outer circumference). As can be seen from FIGS. 1 and 2, the partition member 40 is actually provided slightly inside the outer edge of the OA floor 1, but in FIG. In order to make it easy to grasp, the boundary of the portion where the partition member 40 is provided is indicated by a solid line.

  The plurality of OA floors 1 are placed on the foundation floor surface Bf (see FIG. 2) and arranged like a grid. When the OA floors 1 are arranged, they are arranged so that the fitting grooves 21g and the fitting protrusions 21p of the adjacent OA floors 1 are fitted. A duct connection floor 81 provided with a connection port 81h of a supply duct 92 for guiding the temperature-controlled air A to the underfloor space S (see FIG. 2), instead of the OA floor 1, in a part of the outer periphery of the air conditioning room R, or A floor 83 with a reflux port in which a reflux port 83h for moving the temperature-controlled air A in the underfloor space S into the cooling / heating chamber R is disposed. In the example shown in FIG. 3, on the floor surface Bf of the air conditioning room R of 5000 mm × 4000 mm, the number of OA floors 1 is subtracted from 20 × 16 by the amount of the duct connection floor 81 and the floor 83 with the reflux port. ing. The duct connection floor 81 is installed at a total of two locations, one corner and this diagonal. A plurality of floors 83 with a reflux port are installed at appropriate intervals along the long sides of the foundation floor surface Bf.

  When the OA floor 1 is first disposed on the foundation floor surface Bf, the base members 20 from which the floor board 10 and the partition members 40 have been removed in advance may be arranged like a grid. If it does in this way, while being able to arrange | position base member 20 without minding the flow direction of temperature control air A, floor rolling equipment, such as an electric wire to underfloor space S after arranging base member 20, is installed. Laying becomes easier. In addition, since a hand can be put into the through-hole 21h from the upper part of the base member 20 and it can contact with the foundation floor surface Bf, laying | laying of the floor rolling equipment to the underfloor space S requires a hand from the through-hole 21h of the base member 20. Can be done. When the floor rolling equipment is laid in the underfloor space S, the partition member 40 necessary for the base member 20 is attached, and the flow path of the temperature-controlled air A is formed. At this time, even if there is a floor rolling facility at the position where the partition member 40 is installed, the penetration permitting portion 41 can avoid the floor rolling facility, and the temperature-controlled air A flow path can be formed. In the present embodiment, the flow path of the temperature-controlled air A in the underfloor space S flows along the short side of the foundation floor surface Bf when the temperature-controlled air A flowing in from the connection port 81h of each duct connection floor 81 flows. When the direction is changed to a direction perpendicular to the short side (direction parallel to the long side) at the midpoint of the short side and flows toward the centroid of the base floor surface Bf, the base floor surface for each row of each OA floor 1 It is designed to flow parallel to the short side toward both long sides of Bf. The partition member 40 is fitted into the partition fitting recess 23c at an appropriate position so that the temperature-controlled air A flows along this design. Thereafter, the floor board 10 is attached to the base member 20 in a direction in which the flow direction of the temperature-controlled air A and the reference direction D coincide. Thus, the through hole 21h is blocked by the floor board 10. Note that the OA floor 1 disposed at a position where the flow direction of the temperature-controlled air A changes in the flow path of the temperature-controlled air A in the underfloor space S (corresponding to the curved portion of the flow path) is the flow direction of the temperature-controlled air A And the reference direction D of the floor board 10 may not match. The surface of the OA floor 1 arranged on the base floor surface Bf is typically provided with a finishing material (not shown) such as a tile carpet or P tile.

  The operation of the OA floor 1 and the air conditioning system 100 will be described with reference to FIGS. 1 to 3. The operation of the OA floor 1 will be described as a part of the operation of the air conditioning system 100. In the air conditioning system 100, temperature-controlled air A whose temperature is adjusted by the air conditioner 91 is generated, and the temperature-controlled air A is supplied to the underfloor space S directly below the duct connection floor 81 via the supply duct 92. The temperature-controlled air A that has flowed into the underfloor space S flows through a flow path that is partitioned by the partition member 40. When the temperature-controlled air A flows through the flow path partitioned by the partition member 40, the floor plate 10 is installed on the base member 20 so that the flow direction of the temperature-controlled air A and the reference direction D coincide with each other. It flows along the surface of the heat collecting plate 30 while contacting the hot plate 30. When the temperature-controlled air A flows along the surface of the heat collecting plate 30, it transmits cold heat (during cooling) or heat (during heating) to the heat collecting plate 30. When the temperature-controlled air A flows along the surface of one heat collecting plate 30, it flows along the surface of the next heat collecting plate 30 with an interval. In this way, since the heat collecting plate length L is formed to a predetermined length that allows the desired leading edge effect to be enjoyed, there is a portion where the boundary layer formed on the surface of the heat collecting plate 30 becomes too thick. The heat stored in the temperature-controlled air A can be efficiently transmitted to the heat collecting plate 30.

  The heat collecting plate 30 that has obtained heat from the temperature-controlled air A transfers heat to the heat radiating plate 11. Thereby, the heat sink 11 is cooled during cooling and warmed during heating. From the cooled or warmed heat sink 11, cold heat or heat is radiated to the air conditioning room R through a finishing material (not shown), and the air conditioning room R is air-conditioned. The temperature-controlled air A flowing through the flow path partitioned by the partition member 40 in the underfloor space S gives heat to the heat collecting plates 30 that meet one after another until reaching the position directly below the floor 83 with the reflux port at the end of the flow path. Thereby, cold heat or heat is radiated from the radiator plate 11 of each OA floor 1 to the air conditioning room R, and the entire air conditioning room R is air-conditioned. The temperature-controlled air A that has arrived immediately below the floor 83 with the reflux port flows into the cooling / heating room R through the reflux port 83h. The temperature-controlled air A reaching the cooling / heating room R is sucked into the air conditioner 91, the temperature is adjusted again, and then supplied to the underfloor space S below the duct connection floor 81 via the supply duct 92. Repeat action.

  As described above, according to the OA floor 1 according to the first embodiment and the cooling / heating system 1 according to the second embodiment including the OA floor 1, the floor board 10 is provided with respect to the base member 20. Since it is configured to be detachable, after the base member 20 is laid on the foundation floor surface Bf, it is possible to approach (access) floor rolling equipment such as electric wires laid in the underfloor space S through the through holes 21h. it can. Moreover, since the base member 20 can be spread over the base floor surface Bf without being conscious of the reference direction D of the floor board 10, the base member 20 can be compared with a structure in which the base member 20 and the floor board 10 are integrated. The time required for laying 20 can be shortened. Moreover, since the partition fitting recess 23c is formed in the base member 20, the flow path of the temperature-controlled air A can be formed after the base member 20 is spread, and labor saving of construction can be achieved. Further, when the floor plate 10 formed by stacking the heat radiating plate 11 on the top plate 12 to which the heat collecting plate 30 is attached is fitted to the spread base member 20, the temperature control air A designed. By aligning the reference direction D with the flow direction, the heat of the temperature-controlled air A is easily transmitted to the heat collecting plate 30. As a result, the heat of the temperature-controlled air A flowing through the underfloor space S is transmitted to the heat collecting plate 30, the heat of the heat collecting plate 30 is transmitted to the heat radiating plate 11, and is radiated from the heat radiating plate 11 to the air conditioning room R. Can be radiant cooling and heating.

  Next, a free access floor 1A (hereinafter referred to as “OA floor 1A”) according to a modification of the first embodiment of the present invention will be described with reference to FIG. FIG. 4 is an exploded perspective view of the OA floor 1A. The OA floor 1A is different from the OA floor 1 (see FIG. 1) in the floor board 10A. The floor board 10A is configured to have the functions of the heat radiating plate 11 (see FIG. 1) and the top board 12 (see FIG. 1) in the OA floor 1 (see FIG. 1). That is, the floor plate 10A is configured to be able to radiate the cooling or heating heat or heat toward the cooling / heating room R and to receive a load from the cooling / heating room R. The floor board 10A is formed thicker than the heat sink 11 (see FIG. 1) in the OA floor 1 (see FIG. 1). Floor board 10A is formed in a square in this modification. As the floor plate 10A, aluminum, a steel plate, an aluminum-coated resin plate, an aluminum-coated structural wood laminated material, or the like can be used.

  The floor plate 10 </ b> A has a heat collecting plate 30 attached to the surface facing the underfloor space S when fitted to the base member 20. The heat collecting plate 30 is the same as that provided on the OA floor 1 (see FIG. 1). The attachment position of the heat collecting plate 30 to the floor board 10A is typically the same as the attachment position to the floor board 10 (see FIG. 1) in the OA floor 1 (see FIG. 1). Therefore, the heat collecting plate 30 is attached to the floor plate 10A so as to extend along the reference direction D. In addition, as long as the direction of the heat collecting plate 30 extends along the reference direction D, the attachment position of the heat collecting plate 30 to the floor board 10A may be changed as appropriate. The heat collecting plate 30 is typically attached to the floor plate 10A by an adhesive. In this way, the heat collecting plate 30 can be firmly attached to the floor plate 10A. Or it is good also as giving a magnet process to the part which touches the floor board 10A of the heat collecting board 30, and attaching the heat collecting board 30 to the floor board 10A by magnetic force. Hereinafter, the floorboard 10A to which the heat collecting plate 30 is attached may be referred to as a “heat collecting / radiating floorboard 13A”. The structure of the base member 20 and the partition member 40 in the OA floor 1A is basically the same as the structure of the base member 20 and the partition member 40 in the OA floor 1 (see FIG. 1). However, the heat sink plate recess 23a and the top plate recess 23b of the base member 20 on the OA floor 1 (see FIG. 1) may be changed so as to be suitable for fitting the heat sink floor plate 13A.

  In the OA floor 1A configured as described above, the heat-dissipating floor plate 13A having the functions of a heat sink, a top plate, and a heat-collecting plate is integrated, so that the heat-dissipating floor plate 13A to the base member 20 laid down is integrated. Is easy to install. In addition, the OA floor 1A is similar to the OA floor 1 (see FIG. 1), after laying the base member 20 on the basic floor surface Bf without being aware of the reference direction D, and then through the through hole 21h. It is possible to access floor rolling equipment such as electric wires laid on S. Moreover, the flow path of the temperature-controlled air A can be formed after laying the base member 20, and the labor saving of construction can be achieved. Further, the heat of the temperature-controlled air A flowing through the underfloor space S is transmitted to the heat collecting plate 30, the heat of the heat collecting plate 30 is transmitted to the floor plate 10A, and is radiated from the floor plate 10A to the cooling / heating room R. can do.

  In the above description, the floor boards 10 and 10A and the frame portion 21 are formed in a square, but may be a rectangle (a square and a rectangle can be collectively referred to as a rectangle), or a shape other than a rectangle. It may be.

  In the above description, the four insertion holes 12h are formed in the top plate portion 12 of the OA floor 1. However, the heat transfer area from the heat collecting plate 30 to the heat radiating plate 11, the simplification of the structure, etc. As a comparative consideration, it may be increased more than four, or conversely decreased. The number of heat collecting plates 30 on the OA floor 1A may also be increased from four, or conversely decreased.

  In the above description, the OA floors 1, 1 </ b> A are provided with the heat collecting plate 30, but the floor plates 10, 10 </ b> A are configured to serve as both the heat collecting plate and the heat radiating plate, and the protrusions such as the heat collecting plate 30. If the heat of the temperature-controlled air A can be radiated to the cooling / heating chamber R even if is not formed, the heat collecting plate 30 may not be provided.

  In the above description, the partition member 40 is fitted into the partition fitting recess 23c formed in the frame portion 21 of the base member 20, but may be attached to the outer surface of the base member 20, It is good also as being attached to the floor boards 10 and 10A. Moreover, although the OA floors 1 and 1A are provided with the partition member 40, the partition member 40 may not be provided when it is not necessary to form a partition in consideration of the flow path of the temperature-controlled air A.

  In the above description, the air temperature adjuster is the air conditioner 91. However, it may be a fan coil or the like, that is, any device capable of adjusting the temperature of air.

  In the above description, the OA floors 1 and 1A are assumed to radiate the heat of the temperature-controlled air A to the air conditioning room R, but may not have a function of radiating the air to the air conditioning room R. In this case, the heat collecting plate 30 and the partition member 40 may not be provided, and the floor plate 10 may not have the function of a heat sink. Even if the OA floors 1 and 1A do not have the function of radiating to the air conditioning room R, the function that the floor rolling equipment such as electric wires can be easily laid after the OA floors 1 and 1A are laid on the basic floor surface Bf. Can be demonstrated.

DESCRIPTION OF SYMBOLS 1, 1A OA floor 10, 10A Floor board 11 Heat sink 20 Base member 21 Frame part 29 Leg part 30 Heat-collection board 40 Partition member 91 Air conditioner 100 Air-conditioning system A Temperature control air B Base floor S Underfloor space

Claims (4)

Floor boards installed at a distance from the foundation floor;
A floor structure member for supporting the floor plate;
The floor structure member has a frame portion that supports the outer periphery of the floor plate, and a leg portion that contacts the foundation floor and supports the frame portion, and when the floor structure member is placed on the foundation floor, A through-hole that is accessible from above to the base floor is formed inside the frame;
The floorboard is configured to be removable from the frame;
The through hole is configured to be closed when the floor board is attached to the frame portion;
Free access floor. The floorboard comprises a heat sink that dissipates heat;
A heat collecting plate in contact with the heat radiating plate, further comprising a heat collecting plate provided to protrude to the leg side from the floor plate;
The free access floor according to claim 1. A partition member for partitioning a space formed between the frame portion and the foundation floor when the floor structure member is placed on the foundation floor;
The free access floor according to claim 1 or 2. The free access floor according to any one of claims 1 to 3, wherein a plurality of free access floors are arranged such that the floor boards are spaced from the foundation floor;
An air temperature controller for adjusting the temperature of the air supplied to the back space between the floor plate and the foundation floor;
Air conditioning system.

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