JP2021028561A - Air-conditioning unit construction method, air-conditioning unit, and air-conditioned room - Google Patents

Abstract

To provide an air conditioning unit construction method having high workability and capable of reducing construction time and labor.SOLUTION: The air conditioning unit construction method includes: a lower joint installation step of inserting a lower joint 50a into a through-hole 17 formed in a floor surface 12b of an air-conditioned room 12 and connecting the lower joint 50a to an underfloor duct 40; a lower adaptor installation step of attaching a lower adaptor 55a to the upper end of the lower joint 50a; a front plate installation step of horizontally moving a front plate 21 of a box-shaped casing 20 having fan openings 24 formed beforehand for fitting a fan 30 so that a hook formed downward at the front end of the lower adaptor 55a can relatively pass through the fan opening 24, and then raising the front plate so as to engage a lower end edge 21a of the fan opening 24 with the hook; and a fan fitting step of inserting the fan 30 through the fan opening 24 and fitting the fan to the lower adaptor 55a.SELECTED DRAWING: Figure 2

Description

The present invention relates to a construction method of an air conditioning unit, an air conditioning unit and an air conditioning room.

There is known an air conditioning system that uses one or more air conditioners to air-condition the living rooms of the entire building (see, for example, Patent Document 1). In this air conditioning system, an air conditioning room equipped with an air conditioning unit is provided at the floor level, and the air conditioning unit supplies air conditioning air to each room. The air conditioning unit includes a box-shaped housing, an air conditioner, a fan, and a duct. The main body of the air conditioner is installed on the wall of the air conditioning room, and the fan is attached to the box-shaped housing installed in the air conditioning room. The air-conditioned air in the air-conditioning room is sucked by a fan and blown to each room through a duct. As a result, each room is air-conditioned.

Japanese Unexamined Patent Publication No. 2016-99087

In the air conditioning unit of Patent Document 1, the box-shaped housing and fan are installed by carpentry work, and the air conditioner and duct are installed and various pipes are installed by equipment work. In the construction of such an air-conditioning unit, there is a problem that a large amount of labor and time is required because the air-conditioning room is narrow and carpentry work and equipment work are mixed.

Therefore, an object of the present invention is to provide a construction method of an air-conditioning unit, an air-conditioning unit, and an air-conditioning room, which can reduce construction labor and time and have good workability.

In the present invention for solving the above problems, a box-shaped housing, a fan installed inside the box-shaped housing, the fan and an underfloor installed under the floor are provided in an air-conditioning chamber formed at the floor level. This is a method of constructing an air conditioning unit in which an air conditioning unit including a lower joint connecting a duct and a lower adapter for fixing the fan to the lower joint is installed. The method of constructing the air conditioning unit includes a lower joint installation step of inserting the lower joint into a through hole formed on the floor surface of the air conditioning chamber and connecting the lower joint to the underfloor duct, and an upper end portion of the lower joint. In addition, a lower adapter installation step for attaching the lower adapter and a front plate of the box-shaped housing in which an opening for a fan for mounting the fan is formed in advance are formed downward at the front end portion of the lower adapter. A front plate installation step in which the lower end edge of the fan opening is raised so as to be locked to the hook after the hook is laterally moved so as to relatively pass through the fan opening. It is characterized by comprising a fan mounting step of inserting the fan through the fan opening and mounting the fan on the lower adapter.

According to the construction method of the air conditioning unit of the present invention, the front plate having the fan opening formed in advance is locked to the lower adapter attached to the lower joint fixed to the floor surface, so that the opening is formed. No need for carpentry work. Therefore, since the construction of the box-shaped housing can be performed by the equipment construction, the construction time and labor can be reduced. Further, since the front plate can be easily positioned and installed only by moving it laterally and raising it, the workability is improved.

In the method of constructing the air conditioning unit of the present invention, the air conditioning unit is an upper portion connecting the upper fan provided inside the box-shaped housing and the upper fan and the ceiling side duct installed on the ceiling side. A top plate installation process in which a joint and an upper adapter for fixing the upper fan to the upper joint are further provided, and a top plate having a through hole formed at the upper end of the front plate is installed, and a ceiling. The tip of the side duct is inserted into the box-shaped housing through the through hole and pulled out from the upper fan opening formed above the fan opening, and the tip of the ceiling side duct is inserted into the ceiling side duct. The upper joint and upper adapter attachment step of connecting the upper joint and attaching the upper adapter to the upper joint, and pulling up the ceiling side duct to pull the upper joint and the upper adapter into the box-shaped housing, and the upper part. The upper adapter installation step of locking and fixing the hook portion formed upward at the front end of the adapter to the upper end edge of the upper fan opening, and the upper fan from the upper fan opening. It is preferable to further include an upper fan mounting step of inserting and mounting the upper adapter. According to such a method, the upper adapter can be easily positioned and installed only by locking the upper adapter to the installed front plate. In addition, since fans are provided in multiple stages above and below inside the box-shaped housing, conditioned air can be supplied to many rooms.

A second invention for solving the above problems is an air conditioning unit installed in an air conditioning room formed at the floor level. Such an air conditioning unit includes a box-shaped housing, a fan installed inside the box-shaped housing, and a lower joint connecting the fan and an underfloor duct installed under the floor. The front plate of the box-shaped housing has an opening for a fan for mounting the fan, and the lower joint penetrates a through hole formed in the floor surface of the air conditioning chamber into the underfloor duct. It is connected. A lower adapter for installing the fan is attached to the upper end of the lower joint, a downward hook is formed at the front end of the lower adapter, and the hook is the lower end edge of the fan opening. Is locked in. A slit is formed between the lower end of the front plate and the floor surface of the air conditioning chamber.

According to the air conditioning unit of the present invention, as in the above construction method, the front plate having the opening for the fan is locked to the lower adapter attached to the lower joint fixed to the floor surface, so that the opening No need for carpentry work to form. Therefore, since the construction of the box-shaped housing can be performed by the equipment construction, the construction time and labor can be significantly reduced. Further, since the front plate can be easily positioned and installed only by moving it laterally and raising it, the workability is improved. Further, since a slit is formed between the lower end of the front plate and the floor surface of the air conditioning room, the temperature difference between the air conditioning room and the box-shaped housing can be reduced.

In the air conditioner unit of the present invention, an upper fan provided inside the box-shaped housing, an upper joint connecting the upper fan and a ceiling-side duct installed on the ceiling side, and an upper joint on the upper joint. Further comprising an upper adapter for fixing the fan, the front plate further comprises an upper fan opening formed above the fan opening, and the front end of the upper adapter It is preferable that an upward hook portion is formed, and the upward hook portion is locked to the upper end edge of the upper fan opening. According to such a configuration, the upper adapter can be easily positioned and installed only by locking the upper adapter to the upper end edge of the upper fan opening of the installed front plate.

The third invention for solving the above-mentioned problems is an air-conditioning chamber provided with a plurality of air-conditioning units according to claim 3 or 4, so that the front plates are opposed to each other and parallel to each other. It is characterized in that the box-shaped housing is arranged. According to the air-conditioning room of the present invention, in addition to the same action and effect as the air-conditioning unit, a plurality of fans can be installed at the same height by facing the box-shaped housings, so that air having the same temperature can be supplied to the plurality of rooms. Can be supplied to. Therefore, the temperature unevenness (air conditioning unevenness) of the supplied air conditioning air can be reduced.

According to the present invention, it is possible to reduce the labor and time for construction and improve the workability.

It is an overall block diagram of the building provided with the air conditioning system using the air conditioning unit which concerns on embodiment of this invention. It is sectional drawing which showed the air-conditioning room provided with the air-conditioning unit which concerns on embodiment of this invention from the front direction. It is sectional drawing which showed the air-conditioning chamber provided with the air-conditioning unit which concerns on embodiment of this invention from the side direction. It is sectional drawing which showed the air-conditioning chamber provided with the air-conditioning unit which concerns on embodiment of this invention from a plane direction. It is a perspective view which showed the air-conditioning unit which concerns on embodiment of this invention. It is a figure for demonstrating the lower joint installation process of the construction method of the air-conditioning unit which concerns on embodiment of this invention, (a) is the perspective view which showed the state which the flange part was installed on the floor surface of the air-conditioning chamber, b) is a perspective view showing a state in which the tubular portion is attached to the flange portion, and (c) is a perspective view showing a state in which the connecting portion between the flange portion and the tubular portion is subjected to coking treatment and tape application. .. It is a figure for demonstrating the lower adapter installation process of the construction method of the air-conditioning unit which concerns on embodiment of this invention, (a) is the perspective view which showed the state which attached the lower adapter to the lower joint, (b) is It is a perspective view which showed the state which the tape was attached. It is an overall perspective view which showed the lower adapter installation process of the construction method of the air-conditioning unit which concerns on embodiment of this invention. It is a figure for demonstrating the front plate installation process of the construction method of the air-conditioning unit which concerns on embodiment of this invention, (a) is the sectional view which showed the state which moves the front plate in the horizontal direction, (b) is It is sectional drawing which showed the state which moved the front plate upward. It is sectional drawing for demonstrating the top plate installation process of the construction method of the air-conditioning unit which concerns on embodiment of this invention. It is a figure for demonstrating the upper joint installation process of the construction method of the air conditioning unit which concerns on embodiment of this invention, (a) is the sectional view which showed the state which attached the upper joint and the upper adapter to the ceiling side duct, ((a). b) is a cross-sectional view showing a state in which the upper joint and the upper adapter are moved inside the box-shaped housing, and (c) is a cross-sectional view in which the upper joint and the upper adapter are moved upward to engage the upper adapter in the fan opening. It is sectional drawing which showed the state to stop. It is sectional drawing for demonstrating the fan mounting process of the construction method of the air-conditioning unit which concerns on embodiment of this invention.

The construction method of the air conditioning unit, the air conditioning unit and the air conditioning room according to the embodiment of the present invention will be described in detail with reference to the drawings. In the present embodiment, the case where the air conditioning unit and the air conditioning room are applied to a two-story house will be described as an example.

As shown in FIG. 1, the building in which the air conditioning unit 1 is installed is a detached house 2, and the heat insulating roof 3 in which the roof heat insulating panel is airtightly installed and the heat insulating wall 4 in which the outer wall heat insulating panel is airtightly installed. It has an outer peripheral filling insulation structure with and. In addition, a heat insulating material is laid under the floor on the first floor, and the heat insulating floor 5 is formed. A cabin back space 7 is formed above the ceiling 6 on the second floor. In FIG. 1, living rooms 8 and 8 on the first floor, an attic space 9, living rooms 10 and 10 on the second floor, a corridor 11, and an air conditioning room 12 are illustrated.

In the present embodiment, the ventilation unit 15 is provided in the cabin back space 7. The ventilation unit 15 includes a heat exchanger 16. The heat exchanger 16 transfers the heat energy of the exhaust air discharged from the inside of the building to the outside to the intake air sucked into the building from the outside. The heat exchanger 16 recovers heat energy from the exhaust taken in from the corridor 11, transfers it to the air sucked from the outside, and returns it to the air conditioning chamber 12.

Next, the configuration of the air conditioning unit 1 will be described. The air conditioning unit 1 is installed in an air conditioning room 12 formed on the second floor level. As shown in FIGS. 2 to 4, the air conditioning unit 1 includes a box-shaped housing 20, upper and lower fans 30, a joint 50, and an adapter 55.

As shown in FIG. 5, the box-shaped housing 20 is formed with the side wall 12a of the air conditioning chamber 12 as the back, and includes a front plate 21, a top plate 22, and a side plate 23. The front plate 21 is made of a wooden rectangular plate material. The front plate 21 is arranged at a predetermined distance from the side wall 12a and extends in the vertical direction parallel to the side wall 12a. The front plate 21 is formed with a fan opening 24 for mounting the fan 30. The fan opening 24 has a rectangular shape and is formed in multiple upper and lower stages. The fan opening 24 is referred to as a lower fan opening 24a and an upper fan opening 24b when distinguishing between the upper and lower sides. The lower fan opening 24a corresponds to the fan opening according to claim 1. The lower fan opening 24a and the upper fan opening 24b are formed in two rows on the left and right, respectively, and the front plate 21 is formed with four fan openings 24. The lower end of the front plate 21 is arranged at intervals from the floor surface 12b of the air conditioning chamber 12, and a laterally long slit 25 is formed between the front plate 21 and the floor surface 12b. The internal space of the air conditioning chamber 12 and the internal space of the box-shaped housing 20 communicate with each other through the slit 25.

The top plate 22 is made of a rectangular wooden plate material, and has a through hole 26 through which the joint 50 penetrates. The through holes 26 have a circular shape and are arranged at two positions corresponding to above the fan opening 24. The top plate 22 extends from the upper end of the front plate 21 toward the side wall 12a of the air conditioning chamber 12, and is arranged horizontally. The side plate 23 is made of a rectangular wooden plate material and closes the side surface of the box-shaped housing 20. The side plate 23 extends from the side end of the front plate 21 toward the side wall 12a of the air conditioning chamber 12 and is arranged vertically. The lower end of the side plate 23 is in contact with the floor surface 12b.

As shown in FIGS. 2 and 3, the fan 30 takes in the conditioned air in the air conditioning chamber 12 and supplies it to the living rooms 8 and 10 (see FIG. 1) via the ducts 40 and 43. The fan 30 has a box shape, and an intake portion 31a is formed on one of the side surfaces, and a blower portion 31b is formed on a surface orthogonal to the side surface. That is, the fan 30 takes in air from the intake unit 31a in the horizontal direction and blows air from the air blowing unit 31b in the direction orthogonal to the intake direction. The fan 30 is inserted into and fixed in the box-shaped housing 20 through the fan opening 24. A flange portion 32 is formed on the peripheral edge of the intake portion 31a, and the flange portion 32 is in contact with the peripheral edge portion of the fan opening 24. The fan 30 is attached to each of the lower fan opening 24a and the upper fan opening 24b. The lower fan 30 mounted in the lower fan opening 24a is arranged so that the blower portion 31b faces downward. The lower fan 30 is connected to the underfloor duct 40 via a joint 50. The underfloor duct 40 is arranged in the attic space 9 and is connected to an air outlet provided on the ceiling of each living room 8 on the first floor. The upper fan 30 mounted on the upper fan opening 24b is arranged so that the blower portion 31b faces upward. The upper fan 30 is connected to the ceiling side duct 43 via a joint 50. The ceiling-side duct 43 is arranged in the space 7 behind the cabin and is connected to an air outlet provided on the ceiling of each living room 10 on the second floor.

The joint 50 is a portion that connects the lower fan 30 and the underfloor duct 40, or the upper fan 30 and the ceiling side duct 43. The joint 50 is provided on each of the upper and lower fans 30, and is referred to as a lower joint 50a and an upper joint 50b when distinguishing between the upper and lower. The joint 50 includes a flange portion 51 and a tubular portion 52. The flange portion 51 extends outward along a plane orthogonal to the axial direction from the body portion of the tubular portion 52. That is, the tubular portion 52 intersects the flange portion 51 and extends. A caulking material is provided around the connecting portion between the flange portion 51 and the tubular portion 52 to ensure airtightness. The flange portion 51 of the lower joint 50a is installed on the floor surface 12b so as to surround the through hole 17 (see FIG. 4) formed in the floor surface 12b of the air conditioning chamber 12. The tubular portion 52 of the lower joint 50a penetrates through the through hole 17. The flange portion 51 of the upper joint 50b is installed on the top plate 22 so as to surround the through hole 26 of the top plate 22. As shown in FIG. 4, the lower through hole 17 and the upper through hole 26 are arranged so as to be offset along the depth direction of the box-shaped housing 20.

As shown in FIGS. 2 and 3, the tubular portion 52 extends above and below the flange portion 51, respectively. An underfloor duct 40 or a ceiling side duct 43 is connected to one end of the tubular portion 52. The tip of one end of the tubular portion 52 has a smaller diameter than the base end side, and is inserted inside the underfloor duct 40 or the ceiling side duct 43.

The lower end (one end) of the tubular portion 52 of the lower joint 50a penetrates the through hole 17 and extends into the lower ceiling space 9. The lower end of the tubular portion 52 is inserted into the upper end of the underfloor duct 40. The outer diameter of the lower end of the tubular portion 52 is smaller than the inner diameter of the upper end of the underfloor duct 40, and the gap between the outer peripheral surface of the tubular portion 52 and the inner peripheral surface of the underfloor duct 40 is insulated. The material is provided. The upper end portion (the other end portion) of the tubular portion 52 of the lower joint 50a projects upward inside the box-shaped housing 20.

The upper end portion (one end portion) of the tubular portion 52 of the upper joint 50b extends upward from the through hole 26 of the top plate 22. The upper end of the tubular portion 52 is inserted into the lower end of the ceiling-side duct 43. The outer diameter dimension of the upper end portion of the tubular portion 52 is smaller than the inner diameter dimension of the lower end portion of the ceiling side duct 43, and there is a gap between the outer peripheral surface of the tubular portion 52 and the inner peripheral surface of the ceiling side duct 43. , Insulation is provided. The lower end portion (the other end portion) of the tubular portion 52 of the upper joint 50b penetrates the through hole 26 of the top plate 22 and projects downward inside the box-shaped housing 20.

As shown in FIG. 7A, the adapter 55 is connected to the other end of the tubular portion 52. The adapter 55 is a member that connects the fan 30 to the joint 50 and also serves as a guide when the fan 30 is mounted in the fan opening 24. The adapter 55 includes a mounting plate portion 56 and a connecting cylinder portion 57. The mounting plate portion 56 has a rectangular horizontal plane 58 in contact with the surfaces of the fan 30 provided with the blower portion 31b. An air outlet 59 connected to the connecting cylinder portion 57 is formed inside the horizontal plane 58. Of the four sides of the peripheral edge of the horizontal plane 58, one side in contact with the fan opening 24 is formed with a hook 59 that is locked to the peripheral edge of the fan opening 24. The hook portion 59 is bent in an L-shaped cross section in the extending direction of the connecting cylinder portion 57. Of the four sides of the peripheral edge of the horizontal plane 58, three-sided walls 60 are formed so as to surround the fan 30 on the other three sides without the hook portion 59. The three-sided wall 60 includes a pair of guide walls 61a and 61a and a stopper wall 61b. The guide walls 61a extend along the insertion direction of the fan 30 and are arranged in parallel with each other so as to surround the fan 30. The stopper wall 61b is located in front of the back side when viewed from the fan opening 24 side. The stopper wall 61b has a larger rising dimension than the guide wall 61a. When the fan 30 is attached to the adapter 55, the fan 30 is inserted straight through the fan opening 24 by sliding both side surfaces of the fan 30 along the pair of guide walls 61a and 61a, and the stopper wall 61b The fan 30 is positioned at the installation position by contacting the fan 30.

The connecting cylinder portion 57 rises orthogonally to the horizontal plane 58, and the inner space is continuous with the air outlet 58a. The outer diameter of the tip of the connecting tubular portion 57 is smaller than the inner diameter of the other end of the tubular portion 52, and the tip of the connecting tubular portion 57 fits inside the other end of the tubular portion 52. It is inserted together.

The adapter 55 is attached to the upper and lower joints 50, respectively, and is referred to as a lower adapter 55a and an upper adapter 55b when distinguishing between the upper and lower parts.

In the lower adapter 55a, the connecting cylinder portion 57 extends downward from the mounting plate portion 56, and the fan 30 is attached to the upper side of the mounting plate portion 56. The hook portion 59 is bent downward and is locked to the lower side portion of the lower fan opening 24a. The three-sided wall 60 stands up on the upper side. The lower end of the connecting tubular portion 57 is fitted inside the upper end (other end) of the tubular portion 52 of the lower joint 50a.

The upper adapter 55b is upside down from the lower adapter 55a, and the connecting cylinder portion 57 extends upward from the mounting plate portion 56. The fan 30 is attached to the lower side of the mounting plate portion 56. The hook portion 59 is bent upward and is locked to the upper side portion of the upper fan opening 24b. The three-sided wall 60 hangs downward. The upper end of the connecting tubular portion 57 is fitted inside the lower end (other end) of the tubular portion 52 of the upper joint 50b.

In the present embodiment, the upper adapter 55b is connected to the ceiling side duct 43 via the upper joint 50b, but the connecting cylinder portion 57 of the upper adapter 55b is directly connected to the ceiling side duct without using the upper joint 50b. It may be connected to 43. In this case, the connecting cylinder portion 57 passes through the through hole 26 of the top plate 22.

As shown in FIGS. 2 and 4, the air conditioning chamber 12 according to the present embodiment includes two air conditioning units 1 having the above configuration. In the air conditioning units 1 and 1, the box-shaped housings 20 and 20 are arranged so that the front plates 21 and 21 are opposed to each other and parallel to each other. The box-shaped housing 20 is arranged so that the front plate 21 is directed from the entrance 12c of the air conditioning chamber 12 toward the back side. That is, the air conditioning units 1 and 1 are arranged on both the left and right sides when viewed from the entrance 12c toward the back. The distance between the box-shaped housings 20 and 20 can secure a width dimension that allows the worker to perform maintenance on the air conditioning unit 1. Inside the air conditioning chamber 12, an air conditioner 18 is installed above the air conditioning unit 1. The air conditioner 18 is connected to an outdoor unit (not shown) to cool or heat the air in the air conditioner chamber 12.

As shown in FIG. 3, the upper portion of the air conditioning chamber 12 projects above the corridor 11. The overhanging portion of the air conditioning chamber 12 and the corridor 11 are separated by a mesh-shaped ceiling material 19, so that air can communicate with each other.

Next, the construction method of the air conditioning unit 1 according to the present embodiment will be described. Such construction methods include a lower joint installation process, a lower adapter installation process, a front plate installation process, a top plate installation process, a side plate installation process, an upper joint and upper adapter installation process, and an upper adapter installation process. It has a fan mounting process.

The lower joint installation step is a step of inserting the lower joint 50a into the through hole 26 formed in the floor surface 12b of the air conditioning chamber 12 and connecting the lower joint 50a to the underfloor duct 40. In the lower joint installation step, as shown in FIG. 6A, first, a through hole 17 is formed on the floor surface 12b, and a flange portion 51 is placed on the peripheral edge of the through hole 26 and screwed. A soft tape (not shown) is attached to the peripheral edge of the flange portion 51 across the floor surface 12b, and then, as shown in FIG. 6B, a through hole 17 is attached from above the flange portion 51. The tubular portion 52 is inserted into the flange, and the lower end portion of the tubular portion 52 is fitted to the upper end portion of the underfloor duct 40 below the through hole 17. At this time, since the lower end portion of the tubular portion 52 has a smaller diameter than the upper end portion of the underfloor duct 40, the underfloor duct 40 and the lower joint 50a can be easily connected. Then, a caulking material is laid at the intersection of the flange portion 51 and the tubular portion 52 to ensure airtightness. As a result, the air conditioning chamber 12 and the attic space 9 are partitioned in an airtight state. Further, as shown in FIG. 6C, an adhesive soft tape 63 is attached so as to cover the intersecting portion between the flange portion 51 and the tubular portion 52, and the flange portion 51 and the tubular portion 52 are attached to each other. Fix it. The soft tape 63 is preferably attached over the entire circumference of the tubular portion 52. Further, the duct tape 64 is wrapped around the soft tape 63 to further improve the airtightness. The duct tape 64 is also attached to the outer peripheral edge of the flange 51 (see FIG. 7).

The lower adapter installation step is a step of attaching the lower adapter 55a to the upper end of the lower joint 50a. In the lower adapter installation step, as shown in FIG. 7A, the lower end of the connecting tubular portion 57 of the lower adapter 55a is fitted inside the upper end of the tubular portion 52 of the lower joint 50a. At this time, the downward hook portion 59 is arranged on the central side of the air conditioning chamber 12. After that, as shown in FIG. 7B, the duct tape 64 is attached so as to cover the boundary portion between the connecting tubular portion 57 of the lower adapter 55a and the tubular portion 52 of the lower joint 50a. As a result, the lower joint 50a and the lower adapter 55a are connected in an airtight state. As shown in FIG. 8, the lower joint 50a and the lower adapter 55a are provided on both the left and right sides of the floor surface 12b of the air-conditioning chamber 12, two front and rear front sides and two rear side. The lower joint 50a and the lower adapter 55a on the left side and the lower joint 50a and the lower adapter 55a on the right side are offset in the front-rear direction. Before and after the lower adapter installation process, the back side plate 23 of the side plates 23 of the box-shaped housing 20 is installed behind the left and right lower joints 50a and the lower adapter 55a. The side plate 23 is installed along the side wall 12a on the back side of the air conditioning chamber 12.

The front plate installation step is a step of locking the front plate 21 in which the fan opening 24 is formed in advance to the lower adapter 55a. In the front plate installation step, as shown in FIG. 9A, the downward hook portion 59 of the front end portion of the lower adapter 55a relatively passes through the lower fan opening 24a of the front plate 21. The front plate 21 is moved horizontally. At this time, the lower end edge (lower frame portion) 21a of the lower fan opening 24a of the front plate 21 passes under the hook portion 59 and enters below the mounting plate portion 56. After that, as shown in FIG. 9B, the front plate is such that the lower end edge 21a of the lower fan opening 24a of the front plate 21 abuts on the lower surface of the mounting plate 56 and the side surface of the hook 59. 21 is raised. Then, the lower end edge 21a is locked to the hook portion 59, and the front plate 21 cannot move outward and is positioned. Then, the front plate 21 is fixed to the side plate 23 on the back side. A slit 25 is formed below the front plate 21 with the floor surface 12b. As described above, in the front plate installation step, the front plate 21 can be positioned at a predetermined position and the slit 25 can be formed in the lower portion of the front plate 21 simply by moving the front plate 21 horizontally and then raising the front plate 21.

The top plate installation process and the side plate installation process are steps of installing the top plate 22 and the side plate 23 of the box-shaped housing 20. In the top plate installation step and the side plate installation step, as shown in FIG. 10, the top plate 22 is attached to the upper end of the front plate 21, and the side plate (not shown) on the front side is attached. The top plate 22 is hung between the upper end of the front plate 21 and the side wall 12a of the air conditioning chamber 12 and fixed with screws or the like. The side plate 23 on the front side is installed on the floor surface 12b, and is brought into contact with the front plate 21, the top plate 22 and the side wall 12a, and fixed with screws or the like. The top plate installation step and the side plate installation step may be performed at the same time, or either of them may be performed in advance.

The upper joint and upper adapter attachment step is a step of attaching the upper joint 50b and the upper adapter 55b to the tip of the ceiling side duct. In the upper joint and upper adapter installation process, as shown in FIG. 11A, the tip of the ceiling side duct 43 is inserted into the box-shaped housing 20 through the through hole 26 of the top plate 22, and is used for the upper fan. Pull out from the opening 24b. Here, the flange portion 51 is installed in advance on the top plate 22, and the ceiling side duct 43 is inserted into the hole of the flange portion 51 and the through hole 26. Then, one end of the tubular portion 52 of the upper joint 50b is inserted into the tip of the ceiling side duct 43, and the tip of the connecting tubular portion 57 of the upper adapter 55b is inserted into the other end of the tubular portion 52 (box type). (It will be the upper end when installed in the housing 20) is inserted. At this time, the upper adapter 55b is attached so that the hook portion 59 is located near the upper end edge of the upper fan opening 24b. Duct tape (not shown) is attached to the joint portion between the ceiling side duct 43 and the upper joint 50b and the joint portion between the upper joint 50b and the upper adapter 55b to connect them in an airtight state.

The upper adapter installation step is a step of fixing the upper adapter 55b to the box-shaped housing 20. In the upper adapter installation step, as shown in FIG. 11B, the ceiling side duct 43 is pulled up, and the upper joint 50b and the upper adapter 55b are inserted into the box-shaped housing 20. At this time, the hook portion 59 of the upper adapter 55b is located outside the opening for the upper fan 24b and is bent upward. As shown in FIG. 11 (c), the ceiling-side duct 43 is further pulled up, and the upward hook portion 59 is locked to the upper end edge 21b of the upper fan opening 24b. Then, the upper adapter 55b is locked to the upper end edge 21b, and positioning with respect to the front plate 21 is performed. Then, the hook portion 59 is screwed to the upper end edge 21b. Further, the tubular portion 52 of the upper joint 50b is fixed to the flange portion 51, and a caulking material (not shown) is laid at the intersection of the flange portion 51 and the tubular portion 52. Furthermore, duct tape (not shown) is attached so as to cover the caulking material.

The fan mounting step is a step of mounting the upper and lower fans 30 and 30 to each adapter 55. The fan mounting step also includes the upper fan mounting step in the claims. In the fan mounting step, as shown in FIG. 12, the lower fan 30 is inserted through the lower fan opening 24a and mounted on the lower adapter 55a. Specifically, the lower fan 30 is inserted between the pair of guide walls 61a and 61a from the upper part of the downward hook portion 59 protruding from the lower end portion of the lower fan opening 24a. Then, the fan 30 is pushed into the back of the lower fan opening 24a while being along the guide wall 61a. At this time, the fan 30 is guided by the guide wall 61a and slid and inserted in a straight line, and comes into contact with the stopper wall 61b at the mounting position. At the mounting position, the outer peripheral flange of the outer end of the fan 30 comes into contact with the outer peripheral edge of the lower fan opening 24a.

On the other hand, the upper fan 30 is inserted from the upper fan opening 24b and attached to the upper adapter 55b (upper adapter installation step). Specifically, the upper fan 30 is inserted between the pair of guide walls 61a and 61a from the lower part of the upward hook portion 59 protruding from the upper end portion of the upper fan opening 24b. Then, the fan 30 is pushed into the back of the upper fan opening 24b while being along the guide wall 61a. At this time, the fan 30 is guided by the guide wall 61a and slid and inserted in a straight line, and comes into contact with the stopper wall 61b at the mounting position. At the mounting position, the flange on the outer periphery of the outer end of the fan 30 comes into contact with the outer peripheral edge of the upper fan opening 24b.

As described above, in the fan mounting process, the fan 30 can be easily mounted along the adapter 55. Further, at the position where the fan 30 is mounted, the blower portion 31b of the fan 30 faces the connecting cylinder portion 57 of the adapter 55, and the air conditioning air can be smoothly blown.

In the above steps, the construction is completed, and the air conditioning unit 1 is constructed as shown in FIG. According to the construction method of the air conditioning unit 1 and the air conditioning unit 1 according to the present embodiment, the front plate 21 in which the fan opening 24 is formed in advance is engaged with the lower adapter 55a attached to the lower joint fixed to the floor surface. Since it is stopped, carpentry work for forming an opening for mounting the fan 30 becomes unnecessary. Therefore, since the construction of the box-shaped housing can be performed by the equipment construction, the construction time and labor can be reduced. Further, since the front plate 21 can be easily positioned and installed simply by pushing it in and lifting it, the workability is improved. Further, the upper adapter 55b can be easily positioned and installed only by locking the upper adapter 55b to the installed front plate 21.

Further, according to the air conditioning unit 1 according to the present embodiment, since the slit 25 is formed between the lower end of the front plate 21 and the floor surface 12b of the air conditioning chamber 12, the inside of the air conditioning chamber 12 and the box-shaped housing The air in the body 20 can be circulated. Therefore, the temperature difference between the air conditioning chamber 12 and the box-shaped housing 20 can be reduced, so that dew condensation can be prevented. Further, since the lower joint 50a can ensure airtightness between the air conditioning chamber 12 and the space 9 below the ceiling, it is possible to suppress a decrease in air conditioning efficiency in the air conditioning chamber 12.

Further, according to the air conditioning chamber 12 according to the present embodiment, a plurality of air conditioning units 1 are provided so that the box-shaped housings 20 face each other, so that a plurality of fans 30 can be installed at the same height. Therefore, a layer of air having the same height can be supplied to a plurality of rooms. Therefore, the temperature unevenness (air conditioning unevenness) of the supplied air conditioning air can be reduced.

In the present embodiment, since the ventilation unit 15 provided with the heat exchanger 16 is provided in the space 7 behind the hut, the thermal energy of the conditioned air (cold air in summer and warm air in winter) is released to the outside of the building. hard. Therefore, it is possible to supply clean air-conditioned air to the living room while performing efficient air-conditioning with little energy loss.

Although the embodiment for carrying out the present invention has been described above, the present invention is not limited to the above-described embodiment, and the design can be appropriately changed without departing from the spirit of the present invention. For example, in the above-described embodiment, the joint 50 is configured by forming the flange portion 51 and the tubular portion 52 separately and combining them at the construction site, but the joint 50 is not limited thereto. The flange portion and the tubular portion may be fixed in advance at a factory or the like, or the flange portion and the tubular portion may be integrally molded into a joint.

Further, in the above-described embodiment, two fan openings 24 are formed above and below the box-shaped housing 20, but the number and number of stages thereof can be appropriately changed. For example, a large number of three or more fan openings 24 may be formed in the upper and lower two stages. By doing so, the unevenness of air conditioning can be further reduced.

1 Air-conditioning unit 12 Air-conditioning room 16b Floor surface 17 Through hole 20 Box-shaped housing 21 Front plate 21a Lower end edge 21b Upper end edge 22 Top plate 23 Side plate 24 Fan opening 24a Lower fan opening 24b Upper fan opening 25 Slit 26 Through hole 30 Fan 40 Underfloor duct 43 Ceiling side duct 50 Fitting 50a Lower fitting 50b Upper fitting 51 Flange part 52 Cylindrical part 55 Adapter 55a Lower adapter 55b Upper adapter 56 Mounting plate part 57 Connecting cylinder part 58 Horizontal plane 59 Hook part 60 Three-way wall 61a Guide wall 61b Stopper wall

Claims (5)

In the air-conditioning chamber formed at the floor level, a box-shaped housing, a fan installed inside the box-shaped housing, a lower joint connecting the fan and an underfloor duct installed under the floor, and a lower joint. In the construction method of the air-conditioning unit for which the lower adapter for fixing the fan and the air-conditioning unit for fixing the fan are installed.
A lower joint installation step of inserting the lower joint into a through hole formed on the floor surface of the air conditioning chamber and connecting the lower joint to the underfloor duct.
The lower adapter installation process of attaching the lower adapter to the upper end of the lower joint,
The front plate of the box-shaped housing in which the fan opening for mounting the fan is formed in advance, and the hook portion formed downward at the front end of the lower adapter makes the fan opening relatively. A front plate installation process in which the lower end edge of the fan opening is raised so as to be locked to the hook after being laterally moved so as to pass through.
A method for constructing an air conditioning unit, comprising: a fan mounting step of inserting the fan through the fan opening and mounting the fan on the lower adapter. The air-conditioning unit includes an upper fan provided inside the box-shaped housing, an upper joint connecting the upper fan and a ceiling-side duct installed on the ceiling side, and the fan above the upper joint. With an upper adapter for fixing, further equipped,
A top plate installation step of installing a top plate having a through hole formed at the upper end of the front plate,
The tip of the ceiling-side duct is inserted into the box-shaped housing through the through hole and pulled out from the upper fan opening formed above the fan opening to reach the tip of the ceiling-side duct. An upper joint and an upper adapter attachment step of connecting the upper joint and attaching the upper adapter to the upper joint,
The ceiling-side duct is pulled up to pull the upper joint and the upper adapter into the box-shaped housing, and a hook portion formed upward at the front end portion of the upper adapter is formed on the upper end edge of the upper fan opening. The upper adapter installation process that locks and fixes to
The method for constructing an air conditioning unit according to claim 1, further comprising an upper fan mounting step of inserting the upper fan through the opening for the upper fan and mounting the fan on the upper adapter. In the air conditioning unit installed in the air conditioning room formed at the floor level
It is provided with a box-shaped housing, a fan installed inside the box-shaped housing, and a lower joint that connects the fan and an underfloor duct installed under the floor.
The front plate of the box-shaped housing has a fan opening for mounting the fan.
The lower joint penetrates a through hole formed on the floor surface of the air conditioning chamber and is connected to the underfloor duct.
A lower adapter for installing the fan is attached to the upper end of the lower joint.
A downward hook portion is formed at the front end portion of the lower adapter, and the hook portion is locked to the lower end edge of the fan opening.
An air conditioning unit characterized in that a slit is formed between the lower end of the front plate and the floor surface of the air conditioning chamber. An upper fan provided inside the box-shaped housing, an upper joint connecting the upper fan and a ceiling-side duct installed on the ceiling side, and an upper part for fixing the upper fan to the upper joint. With an adapter,
The front plate further has an upper fan opening formed above the fan opening.
The air conditioner according to claim 3, wherein an upward hook portion is formed at the front end portion of the upper adapter, and the upward hook portion is locked to the upper end edge of the upper fan opening. unit. An air conditioning room provided with a plurality of air conditioning units according to claim 3 or 4.
An air-conditioning chamber characterized in that the box-shaped housing is arranged so that the front plates face each other and are parallel to each other.

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