JP6445763B2 - Thermal insulation installation structure of air conditioner - Google Patents

Description

  The present invention relates to a heat insulating installation structure for an air conditioner installed in a lower space of a floor.

  When heat exchange is performed inside an indoor unit of an air conditioner, dew condensation may occur due to a temperature difference from the surroundings. Therefore, it is known that the heat exchanger periphery is covered with a heat insulating material (Patent Document 1). 4).

  Patent Document 1 discloses a heat insulating block member obtained by molding polystyrene foam into a shape that can accommodate a heat exchanger. Moreover, the heat insulating material made from a polystyrene foam currently disclosed by patent document 2 is divided | segmented and arrange | positioned in order to suppress propagation of a vibration.

  Furthermore, Patent Literature 3 discloses a method for fixing a heat insulating material to a casing of an indoor unit. Patent Document 4 discloses a heat insulating structure in which a foam heat insulating material is foamed in a main body case of an indoor unit. Patent Document 5 discloses a heat insulating structure for an air conditioning duct.

  On the other hand, an air conditioning system is known in which an indoor unit of an air conditioner is installed in a space under a building to cool or heat the entire building (Patent Documents 6 and 7). This air conditioning system consists of an outdoor unit installed outside the building, an indoor unit installed in the underfloor space, a duct that is piped in the underfloor space and connected to the indoor unit, and the end of the duct faces the above floor space An exhaust port and an air supply port. Then, for example, air in the room on the floor flows from the exhaust port and is adjusted as cooling or heating by the indoor unit, and then cool air or warm air is supplied from the air supply port to the room through the duct.

JP-A-9-166335 JP2013-213634A Japanese Patent Laid-Open No. 11-6635 JP2013-174424A JP 2000-171085 A JP 2010-243142 A JP 2011-99674 A

  By the way, when the ground is exposed in the underfloor space on the first floor, such as a house based on a cloth foundation, an air conditioner with a foamed polystyrene board attached to the lower surface as a heat insulating material is placed horizontally because the ground is uneven. Is difficult. Further, depending on the thickness of the heat insulating material, there is a possibility that the air conditioner cannot be disposed in the underfloor space.

  Then, this invention aims at providing the heat insulation installation structure of the air conditioner which can ensure the heat insulation performance of the lower surface side of an air conditioner, even when the base surface of underfloor space has an unevenness | corrugation.

  In order to achieve the above object, the heat-insulating installation structure for an air conditioner according to the present invention is a heat-insulating installation structure for an air conditioner having a heat exchange unit installed in a lower space of a floor of a building. An upper heat insulating material to cover, a side heat insulating material covering the side surface of the air conditioner, and an elastic heat insulating material having an elastic performance and a heat insulating performance to surround at least an outer edge of the lower surface of the air conditioner, and a lower surface of the air conditioner; A gap with the base surface of the lower space is blocked by the elastic heat insulating material.

  Here, the whole lower surface may be covered with the elastic heat insulating material. The elastic heat insulating material can be formed of a foamed rubber material.

  In the heat insulation installation structure of the air conditioner of the present invention configured as described above, the upper surface and the side surface of the air conditioner are covered with the heat insulating material. And the clearance gap between the lower surface of an air conditioner and the base surface of downward space is obstruct | occluded with an elastic heat insulating material.

  For this reason, even if it is a case where the ground is exposed in the underfloor space and there is unevenness, if it is an elastic heat insulating material, it will be deformed according to the unevenness and respond, so the heat insulation performance on the lower surface side of the air conditioner is ensured be able to.

  Moreover, by covering the entire lower surface of the air conditioner with an elastic heat insulating material, it is possible to reliably suppress the occurrence of condensation on the lower surface side. Furthermore, if the elastic heat insulating material is formed of a foamed rubber material, it can be deformed following a small unevenness because it is a flexible material, and can be brought into close contact with the base surface side.

It is a perspective view explaining the structure of the heat insulation installation structure of the underfloor air conditioner of embodiment of this invention. It is explanatory drawing which showed the whole structure of the air conditioning system incorporating the underfloor air conditioner installed in underfloor space. It is a top view explaining the composition of an underfloor air conditioner. It is a side view explaining the structure of the heat insulation installation structure of an underfloor air conditioner. It is a side view which expands and demonstrates the right end part of FIG. It is a front view explaining the structure of the heat insulation installation structure of an underfloor air conditioner. It is a front view which expands and demonstrates the right end part of FIG. It is explanatory drawing which showed the process of carrying in the divided underfloor air conditioner to underfloor space. It is explanatory drawing which showed the process of assembling the divided underfloor air conditioner in underfloor space. It is explanatory drawing which showed the process of attaching a support frame part to an underfloor air conditioner in underfloor space. It is explanatory drawing which showed the process of attaching a heat insulating material to the upper surface of an underfloor air conditioner. It is a bottom view explaining the structure of the underfloor air conditioner of an Example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of a heat-insulating installation structure of an underfloor air conditioner 2 as an air conditioner according to the present embodiment. And FIG. 2 is explanatory drawing which showed schematic structure of the whole air conditioning system in which this underfloor air conditioner 2 is integrated.

  Below, the case where the existing house (building) is renovated and a new air conditioning system is introduced is described. As a house, a unit building 10 constituted by connecting a plurality of building units 1,... (See FIG. 4) vertically and horizontally will be described as an example.

  The building unit 1 includes a rectangular parallelepiped frame obtained by joining steel columns and beams. When the column and beam are rigidly joined by welding, a framework of the frame structure is formed. As shown in FIGS. 4 and 8, the floor 11 is spanned between the floor beams 12, 12 arranged substantially in parallel as the framework of the building unit 1 and the floor beams 12, 12 with a space therebetween. It is supported by a plurality of floor beams 13,. Here, as shown in FIG. 8, a plurality of floor joists 14,... Are arranged substantially parallel on the floor beams 13,.

  As shown in FIG. 2, the floor 11 is provided with an opening 11 a, from which equipment necessary for the air conditioning system is carried into an underfloor space 1 a that is a space below the floor 11. The foundation of the unit building 10 is a fabric foundation 15, and a foundation opening 15a for maintenance is provided from the beginning of construction.

  And the refrigerant | coolant pipe | tubes 23a and 23a which connect the underfloor air conditioner 2 installed in the underfloor space 1a and the outdoor unit 23 installed in the outer side of the fabric foundation 15 are piped through the foundation opening 15a. Further, the drainage drain pipe 24 extending from the underfloor air conditioner 2 is also drawn out through the foundation opening 15a.

  Moreover, the electric power used as the drive source of the underfloor air conditioner 2 is supplied from the existing distribution board 27 via the power wire 27a. Further, a remote controller 28 for controlling the set temperature and the operation mode of the underfloor air conditioner 2 is also connected.

  On the other hand, suction grilles 25a and 25a for taking in indoor air are opened in the floor 11. The air flowing from the suction grills 25a and 25a is sent to the underfloor air conditioner 2 through the heat insulation ducts 25 and 25. Further, the air adjusted to a predetermined temperature or humidity inside the underfloor air conditioner 2 is supplied into the room through the heat insulating duct 26 and from the blow grills 26a and 26a.

  In FIG. 3, the top view which looked at the underfloor air conditioner 2 from the top was shown. This underfloor air conditioner 2 is an indoor unit of a heat pump type air conditioning system, and includes a heat exchanging unit 21 that performs heat exchange of air and a blower unit 22 that discharges air adjusted by heat exchange. .

  The heat exchange part 21 and the air blowing part 22 have a rectangular parallelepiped appearance. The heat exchanging section 21 includes a plurality of suction ports 21b that communicate between the inside and the outside, and a heat exchanger 21a that is housed inside. In addition, a base portion 21 c that controls the underfloor air conditioner 2 is provided on one side of the heat exchanging portion 21.

  The heat exchanger 21a is connected to the outdoor unit 23 by refrigerant pipes 23a and 23a. The heat medium flowing through the refrigerant tubes 23a, 23a is cooled during cooling and warmed during heating by exchanging heat with the outside air in the outdoor unit 23.

  And the heat medium which flowed into the heat exchanger 21a performs heat exchange with the air which flowed into the inside of the heat exchange part 21 from the suction inlet 21b. That is, air is cooled during cooling, and air is heated during heating. Further, water (internal dew condensation) generated in the heat exchanging unit 21 at the time of heat exchange is drained to the outside by the drain pipe 24.

  On the other hand, the air blower 22 includes a plurality of fans 22a,... And a plurality of outlets 22b,. The fan 22a is a blower such as a sirocco fan for sending air that is cooled during the cooling in the heat exchanging unit 21 and warmed during the heating to the room. In the blower unit 22, one fan 22a is connected to one outlet 22b.

  The underfloor air conditioner 2 configured in this way is filled with air after temperature adjustment, and therefore condensation (external dew condensation) occurs depending on the temperature difference from the air in the underfloor space 1a. Moreover, if cold heat or warm heat is discharged from the underfloor air conditioner 2 to the underfloor space 1a, the operation efficiency is lowered.

  Therefore, as shown in FIG. 1, the outer periphery of the underfloor air conditioner 2 is covered with a heat insulating material 51 </ b> A- 51 </ b> G to prevent (external) condensation and heat dissipation. A foamed polystyrene plate, glass wool, foamed rubber material, or the like can be used for the heat insulating materials 51A-51G. Below, the case where a styrene board is used as heat insulating material 51A-51G is demonstrated.

  Moreover, the heat insulating materials 51B and 51F that cover the upper surface of the underfloor air conditioner 2 are upper heat insulating materials, and the heat insulating materials 51A, 51C, 51D, 51E, and 51G that cover the side surfaces of the underfloor air conditioner 2 are side heat insulating materials.

  Here, the heat insulating material 51 </ b> C is a side heat insulating material that covers the front surface on the air blowing unit 22 side that is one of the side surfaces of the underfloor air conditioner 2. The heat insulating material 51C is provided with a circular cutout for allowing the outlets 22b, 22b, and 22b to pass therethrough.

  On the other hand, the lower surface of the underfloor air conditioner 2 is covered with elastic heat insulating materials 52A and 52B having elastic performance and heat insulating performance. Specifically, the elastic heat insulating material 52 </ b> A is formed into a rectangle that matches the shape of the lower surface of the heat exchange unit 21, and the elastic heat insulating material 52 </ b> B is formed into a rectangle that matches the shape of the lower surface of the air blowing unit 22. The entire surface of the lower surface of the underfloor air conditioner 2 is covered with the two elastic heat insulating materials 52A and 52B.

  The elastic heat insulating materials 52A and 52B are formed of, for example, a foam rubber material. As the foam rubber material, a synthetic rubber containing a large number of bubbles can be used. For example, EPT SEALER (registered trademark: Nitto Denko Corporation) in which a blend of ethylene-propylene-diene rubber (EPDM) is foamed in a semi-independent and semi-continuous state can be used. In addition to being a flexible material, the ept sealer has a low stress during compression and does not deform the lower surface of the underfloor air conditioner 2.

  Thus, by covering the lower surface of the underfloor air conditioner 2 with the elastic heat insulating materials 52A and 52B, it is possible to prevent (external) condensation on the lower surface and heat dissipation. Even if the base surface (ground) of the underfloor space 1a has irregularities, the elastic heat insulating materials 52A and 52B can be deformed to absorb the irregularities. Furthermore, even when the height of the underfloor space 1a cannot be secured sufficiently, the underfloor air conditioner 2 can be accommodated by compressing the elastic heat insulating materials 52A and 52B.

  Further, in order to prevent the occurrence of condensation and heat dissipation due to the air taken in from the suction grill 25a and the air whose temperature is adjusted by the underfloor air conditioner 2, a heat insulation duct 25 is piped between the suction grill 25a and the suction port 21b. A heat insulating duct 26 is piped between the outlet 22b and the outlet grill 26a. As the heat insulation ducts 25 and 26, duct pipes whose outer periphery is covered with a heat insulating material such as glass wool can be used.

  Next, reinforcement performed on the floor 11 will be described. As shown in FIG. 8, when the existing floor 11 is cut to provide the opening 11a, the floor beam 13A and the floor joists 14A and 14A below it are also cut. Here, the cut surfaces of the floor beam 13A are referred to as cut end portions 131 and 131, respectively.

  The opening 11a is closed with a lid 11b as shown in FIG. 5-7 after the underfloor air conditioner 2 and the like are installed in the underfloor space 1a. A lid receiving bar 11d is attached to the inner peripheral edge of the opening 11a, and the lid 11b is placed thereon. Further, a floor parting 11c is arranged at the boundary between the lid 11b and the floor 11.

  And as shown in FIG. 11, a pair of longitudinal reinforcement beams 31 and 31 are bridged substantially parallel between the floor beams 13 and 13 facing each other across the opening 11a. The longitudinal reinforcing beams 31 that are substantially orthogonal to the floor beam 13 are joined to the side surfaces of the floor beams 13 and 13 via end joints 31a and 31a at both ends.

  Further, the interval between the longitudinal reinforcing beams 31 and 31 is made substantially the same as the length of the short side of the rectangular opening 11a. Such vertical reinforcing beams 31 are formed of channel steel (C-shaped steel) having a substantially U-shaped cross section as shown in FIGS.

  Then, as shown in FIGS. 4 and 11, a pair of lateral reinforcing beams 32, 32 are bridged between the longitudinal reinforcing beams 31, 31 substantially in parallel. As shown in FIGS. 6, 7, and 11, the horizontal reinforcing beams 32 that are substantially orthogonal to the vertical reinforcing beams 31 are respectively joined to the side surfaces of the vertical reinforcing beams 31 and 31 through end pieces 32 a and 32 a at both ends. . This joining is performed by a drill screw 33 or the like.

  Such a lateral reinforcing beam 32 is formed of grooved steel (C-shaped steel) having a substantially U-shaped cross-sectional view. Further, a rectangular steel plate is integrated as an end piece portion 32a with the end portion of the lateral reinforcing beam 32 by welding or the like. In this way, the ladder-shaped (cross-girder) frame 3 is formed by the longitudinal reinforcing beams 31 and 31 and the lateral reinforcing beams 32 and 32.

  The interval between the lateral reinforcing beams 32 and 32 is made substantially the same as the length of the long side of the rectangular opening 11a. The support frame portion 4 is suspended from the lateral reinforcing beams 32 and 32. Since the support frame portion 4 is provided on both sides of the underfloor air conditioner 2, the interval between the lateral reinforcing beams 32 and 32 is set according to the width of the underfloor air conditioner 2. In short, the width of the opening 11a is also set in accordance with the width of the underfloor air conditioner 2.

  As shown in FIG. 10, the support frame portion 4 includes a pair of brackets 41A and 41B that receive the underfloor air conditioner 2 from below, and a plurality of hanging brackets (42A and 43A) extending vertically upward from the respective brackets 41A and 41B. , 42B, 43B).

  As described above, the underfloor air conditioner 2 has a side surface with the base portion 21c and a side surface without the base portion 21c. The first side frame 4a constituted by the right side receiving metal 41A and the hanging metal fittings (42A, 43A) of FIG. 10 is attached to the side surface where the base portion 21c is provided, and is constituted by the receiving metal fitting 41B and the hanging metal fittings (42B, 43B). The second side frame 4b is attached to the opposite side surface.

  The receiving brackets 41A and 41B are formed of L-shaped steel having a substantially L shape in cross section. In addition, an overhanging portion 441 is formed at one end of the receiving metal fitting 41A on the base portion 21c side.

  On the other hand, the suspension fittings (42A, 42B, 43A, 43B) include middle suspension fittings 42A, 42B attached near the center in the longitudinal direction of the receiving fittings 41A, 41B, and end suspension fittings 43A, 43B attached to the ends. . As will be described later, the distance between the middle suspension fitting 42A (42B) and the end suspension fitting 43A (43B) is set within a range that fits within the length of the lateral reinforcing beam 32.

  The middle hanging brackets 42A and 42B have a substantially L-shaped main body portion 421 standing in a columnar shape and an upper surface plate 422 formed at the upper end. Further, the lower surface of the middle hanging bracket 42A on the base portion 21c side is closed by the bottom plate 442.

  By tightening the nut 45a through the bolt 45 to the bottom plate 442, the middle hanging bracket 42A is fixed to the receiving bracket 41A. On the other hand, the middle hanging bracket 42B is fixed to the receiving bracket 41B by a bolt 45 passed through the main body portion 421.

  The end-hanging metal fittings 43A and 43B each have a substantially L-shaped main body portion 431 standing in a columnar shape and an upper surface plate 432 formed at the upper end. Further, the bottom surface of the end hanging metal fitting 43A on the base portion 21c side is closed by the bottom plate 443.

  By tightening the nut 45a through the bolt 45 to the bottom plate 443, the end suspension fitting 43A is fixed to the receiving fitting 41A. On the other hand, the end-hanging metal fitting 43B is fixed to the receiving metal fitting 41B by a bolt 45 passed through the main body portion 431. Here, a moisture-proof film (not shown) is attached to the lower surface of the bolts 45,.

  As shown in FIG. 10, the support frame portion 4 has a first side frame 4 a and a second side frame 4 b attached to both sides of the underfloor air conditioner 2. Fixing brackets 21f, 21f, 22c, and 22c are respectively attached to the four corners on the lower surface side of the underfloor air conditioner 2 (see FIG. 3).

  The bolts 45,... Are passed through the fixing brackets 21f, 21f, 22c, 22c and both ends of the receiving brackets 41A, 41B, and the nuts 45a,. The second side frame 4b is fixed.

  On the other hand, the upper ends of the hanging metal fittings (42A, 42B, 43A, 43B) are fixed to the lateral reinforcing beams 32, 32 constituting the frame 3 as shown in FIGS. Specifically, the tip of the suspension bolt 46 passed through the lower flange of the lateral reinforcement beam 32 from above is passed through the hole of the upper surface plate 432 of the end suspension fitting 43B. A nut 46 a is attached to the tip of the suspension bolt 46.

  Further, between the lower flange of the lateral reinforcing beam 32 and the upper surface plate 422, a number of height adjustment plates (not shown) necessary for adjusting the level of the underfloor air conditioner 2 are mounted. The height adjustment plate is formed in a substantially U shape in plan view and can be fitted to the suspension bolt 46 from the side. When the nut 46a is tightened, the middle suspension fitting 42B is lifted, so that the underfloor air conditioner 2 can be suspended horizontally at a predetermined height.

  Further, as shown in FIG. 11, a brace bracket 34 projecting downward is interposed between the side surface of the underfloor air conditioner 2 and the lateral reinforcing beam 32 constituting the frame body 3. The brace 34 is formed of an L bracket. The upper surface of the brace 34 is fixed to the lower flange of the lateral reinforcing beam 32 using bolts 34a and nuts.

  Next, the construction method of the heat insulation installation structure of the underfloor air conditioner 2 of the present embodiment will be described with reference to the drawings. First, as shown in FIG. 2, an appropriate portion of the floor 11 of the living room or the non-residential room of the unit building 10 is cut into a rectangle to provide an opening 11a. As will be described later, the opening 11a is sized so that the heat exchange unit 21 and the air blowing unit 22 can be carried into the underfloor space 1a from above the floor.

  Further, the floor beam 13A and the floor joists 14A and 14A exposed to the opening 11a are cut as shown in FIG. 8, and the separated members are removed. Furthermore, a moisture-proof film is laid as a soil cover 16 on the ground of the underfloor space 1a as necessary.

  Further, by using the opening 11a, the basic opening 15a, etc. provided in the floor 11 before, after or in parallel with the process described later, the installation of the outdoor unit 23, the refrigerant pipes 23a, 23a and the drain pipe shown in FIG. 24 piping, the suction grill 25a and the blowout grill 26a, the piping of the heat insulation ducts 25 and 26, the wiring of the power supply line 27a connected to the distribution board 27, the attachment of the remote control 28, etc. are performed.

  And as shown in FIG. 8, the underfloor air conditioner 2 is divided | segmented into the heat exchange part 21 and the ventilation part 22, and elastic heat insulating materials 52A and 52B are affixed on each lower surface. Further, the heat insulating materials 51A, 51C, 51G that do not hinder the carrying-in or assembly from the opening 11a are pasted in advance. That is, the heat insulating material 51 </ b> G is attached to the side surface of the heat exchange unit 21, and the heat insulating materials 51 </ b> A, 51 </ b> A, 51 </ b> C are attached to the side surface of the air blowing unit 22.

  Subsequently, the heat exchange unit 21 and the air blowing unit 22 whose lower surfaces are covered with the soil covers 16 and 16 are carried into the underfloor space 1a from the opening 11a. As shown in FIG. 9, the heat exchanging part 21 and the air blowing part 22 carried into the underfloor space 1a are assembled so as to be freely opened and closed by a hinge fitting 21d and screws 21e,.

  On the other hand, the support frame part 4 is assembled on the floor. The first side frame 4a is assembled using a receiving metal fitting 41A, an intermediate hanging metal fitting 42A, an end hanging metal fitting 43A, bolts 45,... And nuts 45a,. Further, the second side frame 4b is assembled using the receiving metal fitting 41B, the middle hanging metal fitting 42B, the end hanging metal fitting 43B, the bolts 45,..., And the nuts 45a,. Here, the heads of the bolts 45 exposed on the lower surface side of the receiving brackets 41A and 41B are covered with a moisture-proof film (soil cover 16).

  Thus, the 1st side frame 4a and the 2nd side frame 4b which were assembled on the floor are conveyed from the opening part 11a to the underfloor space 1a. And as shown in FIG. 10, the 1st side frame 4a is attached to the side surface by the side of the base part 21c of the underfloor air conditioner 2, and the 2nd side frame 4b is attached to the other side.

  The first side frame 4a and the second side frame 4b are fixed by using the bolts 45 and nuts 45a while aligning both ends of the receiving brackets 41A and 41B with the fixing brackets 21f and 22c of the underfloor air conditioner 2. .

  Further, heat insulating materials 51D and 51E coated with an adhesive 53 are attached to places such as the boundary between the heat exchanging portion 21 and the air blowing portion 22 and the periphery of the fixing bracket 22c that cannot be attached in advance.

  Subsequently, the frame 3 is assembled around the opening 11a. First, as shown in FIG. 11, the longitudinal reinforcing beams 31 and 31 are bridged between the floor beams 13 and 13. End joint portions 31a and 31a at both ends of the longitudinal reinforcing beam 31 are joined to the side surfaces of the floor beam 13 and 13, respectively. Further, the cut end portion 131 of the cut floor beam 13A is brought into contact with the outer side surface of the longitudinal reinforcing beam 31 and joined by the intermediate joint portion 31b.

  On the other hand, horizontal reinforcing beams 32 and 32 are respectively bridged between the inner side surfaces of the vertical reinforcing beams 31 and 31. That is, the end piece portion 32a of the lateral reinforcing beam 32 is brought into contact with the web of the vertical reinforcing beam 31, and the drill screws 33 and 33 are screwed to perform joining. Further, the end portions of the cut floor joists 14A and 14A are placed on the upper surface of joist receiving portions (not shown) attached along the lateral reinforcing beams 32.

  The support frame 4 is suspended from the frame 3 fixed between the floor beams 13 in this way. As a procedure, first, the middle suspension fittings 42A and 42B and the end suspension fittings 43A and 43B and the lateral reinforcing beam 32 are connected by the suspension bolt 46 and the nut 46a.

  The number of height adjustment plates necessary for leveling the upper surface of the underfloor air conditioner 2 is divided into the lower flange of the lateral reinforcing beam 32 and the upper plates 422, 432 of the suspension fittings (42A, 42B, 43A, 43B). Fit between. When the nut 46 a is tightened in this state, the support frame portion 4 and the underfloor air conditioner 2 fixed to the support frame portion 4 are lifted together and are suspended from the frame body 3.

  In this way, the underfloor air conditioner 2 is suspended from the frame 3, but the elastic heat insulating materials 52A and 52B are in contact with the upper surface of the soil cover 16 laid on the ground as shown in FIGS. That is, the gap between the lower surface of the underfloor air conditioner 2 and the upper surface of the soil cover 16 is closed by the elastic heat insulating materials 52A and 52B in a state compressed more than the original thickness.

  Further, as shown in FIG. 11, a downward protruding piece of the brace 34 is inserted between the underfloor air conditioner 2 and the heat insulating material 51 </ b> A, and is fixed to the lateral reinforcing beam 32 with a bolt 34 a and a nut. The brace 34 is attached to both the left and right sides of the underfloor air conditioner 2.

  Subsequently, the heat insulating materials 51B and 51F are arranged on the upper surface of the underfloor air conditioner 2. Here, the adhesive 53 is applied to the lower surface of the heat insulating materials 51F and 51F inserted between the upper surface of the heat exchanging portion 21 and the floor 11, and joined to the underfloor air conditioner 2.

  On the other hand, the heat insulating materials 51B and 51B on the air blowing portion 22 side disposed below the lid portion 11b of the opening portion 11a are configured so as to be removable without applying the adhesive 53. In this way, maintenance after the start of use of the air conditioning system can be performed from the opening 11a.

  Next, the effect | action of the heat insulation installation structure of the underfloor air conditioner 2 of this Embodiment is demonstrated.

  In the heat insulation installation structure of the underfloor air conditioner 2 of the present embodiment configured as described above, the upper surface and the side surface of the underfloor air conditioner 2 are covered with the heat insulating materials 51A to 51G. And the clearance gap between the lower surface of the underfloor air conditioner 2 and the base surface (upper surface of the soil cover 16) of the underfloor space 1a is obstruct | occluded by elastic heat insulating materials 52A and 52B.

  For this reason, even if the ground is exposed in the underfloor space 1a and has irregularities, the elastic heat insulating materials 52A and 52B can be deformed according to the irregularities, so the lower surface side of the underfloor air conditioner 2 The heat insulation performance can be ensured.

  That is, when an air conditioner is installed in the underfloor space 1a where the uneven ground surface is exposed, if a hard polystyrene plate having a low compressibility and deformation followability is disposed on the lower surface side of the air conditioner as a heat insulating material, the unevenness remains as it is. It becomes difficult to install horizontally. Moreover, when a polystyrene foam has thickness, the space which arrange | positions a heat insulating material on the upper and lower sides of an air conditioner may not be ensured. In such a case, it is necessary to excavate the ground or omit the heat insulating material on the lower surface side.

  On the other hand, if it is the heat insulation installation structure of the underfloor air conditioner 2 of this Embodiment, the elastic heat insulating materials 52A and 52B arrange | positioned at the lower surface of the underfloor air conditioner 2 are shape | molded with the flexible material called a foam rubber material. Therefore, it can be deformed following small unevenness, and can be brought into close contact with the base surface (upper surface of the soil cover 16).

  Moreover, even if the height of the underfloor space 1a is low, the elastic heat insulating materials 52A and 52B can be easily accommodated by being greatly compressed, so that the heat insulation performance on the lower surface side of the underfloor air conditioner 2 can be ensured. . In particular, by covering the entire lower surface of the underfloor air conditioner 2 with the elastic heat insulating materials 52A and 52B, the occurrence of condensation on the lower surface can be reliably suppressed.

  Hereinafter, an example of a mode different from the above-described embodiment will be described with reference to FIG. The description of the same or equivalent parts as the contents described in the above embodiment will be described with the same terms or the same reference numerals.

  FIG. 12 is a bottom view of the underfloor air conditioner 2A as the air conditioner described in this embodiment when viewed from the lower surface side. In the embodiment, the case where the entire lower surface of the underfloor air conditioner 2 is covered with the elastic heat insulating materials 52A and 52B has been described. On the other hand, a present Example demonstrates the outer periphery heat insulating material 6 as an elastic heat insulating material which surrounds the outer edge of the lower surface 201 of 2 A of underfloor air conditioners.

  The lower surface 201 of the underfloor air conditioner 2 </ b> A has a shape in which the rectangular lower surface 211 of the heat exchange unit 21 and the rectangular lower surface 221 of the blower unit 22 are combined. And the elastic heat insulating materials 61 and 62 are affixed with respect to each lower surface 211,221.

  The elastic heat insulating materials 61 and 62 are formed in a rectangle surrounding the outer edges of the lower surfaces 211 and 221. The details of the elastic heat insulating materials 61 and 62 are the same as those of the elastic heat insulating materials 52A and 52B described in the above embodiment, and thus the description thereof is omitted.

  As shown in FIG. 12, when the elastic heat insulating materials 61 and 62 are attached to the lower surfaces 211 and 221, the outer peripheral heat insulating materials 61 and 62 continuously surround the outer edge of the lower surface 201 of the underfloor air conditioner 2 </ b> A. It becomes the material 6.

  In this way, if the outer edge of the lower surface 201 of the underfloor air conditioner 2A is surrounded by the outer peripheral heat insulating material 6, the movement of heat and air between the lower surface 201 side and the underfloor space 1a is suppressed, and the outer surface 201 (external) Generation of condensation and heat dissipation can be prevented. For this reason, the usage-amount of a heat insulating material can be restrained and material cost can be reduced.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment, and thus description thereof is omitted.

  The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment or example, and the design changes are within the scope of the present invention. Are included in the present invention.

  For example, in the above-described embodiment, the case where the unit building 10 that is an existing house is repaired has been described. However, the present invention is not limited to this, and the present invention can also be applied to a new house. Moreover, the building which can apply this invention is not limited to the unit building 10 mentioned above.

  Furthermore, in the said embodiment and Example, although the underfloor air conditioner 2 and 2A classified into an indoor unit was demonstrated as an air conditioner, it is not limited to this, An indoor unit and an outdoor unit are united. The present invention can be applied even to an air conditioner having a different structure.

  In the above embodiment, the structure in which the underfloor air conditioner 2 is suspended by the support frame portion 4 has been described. However, the present invention is not limited to this structure. ) Directly.

10 unit building (building)
1a Under-floor space (lower space under the floor)
11 Floor 16 Soil cover (base)
2,2A Underfloor air conditioner (air conditioner)
201 bottom surface 21 heat exchange part 51B, 51F heat insulating material (upper heat insulating material)
51A, 51C, 51D, 51E, 51G Insulation (side insulation)
52A, 52B Elastic heat insulating material 6 Outer peripheral heat insulating material (elastic heat insulating material)
61, 62 Elastic insulation

Claims (4)

A heat-insulating installation structure of an air conditioner having a heat exchange unit installed in a lower space of a floor of a building,
An upper heat insulating material covering the upper surface of the air conditioner;
A side heat insulating material covering a side surface of the air conditioner;
An elastic heat insulating material formed of a foamed rubber material having an elastic performance and a heat insulating performance to surround at least the outer edge of the lower surface of the air conditioner;
A gap between the lower surface of the air conditioner and the base surface of the lower space is closed by the elastic heat insulating material, and the upper heat insulating material has a notched recess formed in a side edge and is removable. Insulation installation structure of air conditioner.   The heat insulating installation structure for an air conditioner according to claim 1, wherein the side heat insulating material is provided with a circular notch.   The heat insulation installation structure for an air conditioner according to claim 1 or 2, wherein the entire lower surface is covered with the elastic heat insulating material. The heat insulating installation structure for an air conditioner according to any one of claims 1 to 3, wherein the foamed rubber material is ethylene-propylene-diene rubber.