JP7071069B2 - Construction method - Google Patents

Description

The present invention relates to a construction method.

With the increasing importance of air conditioning with global warming, it is required to reduce the cost of construction and maintenance of air conditioning equipment. Furthermore, due to the recent declining birthrate and aging population, the working population is decreasing, making it difficult to secure personnel for construction and maintenance. Various techniques have been proposed for rationalizing the construction and maintenance of air conditioning equipment (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 05-272778

Since the air-conditioning equipment is installed in a limited space such as an air-conditioning machine room or a ceiling where workability is poor, the air-conditioning equipment is installed according to an ordered procedure. In the air conditioning equipment of a large facility such as a building, for example, an air conditioning device (AHU, Air Handling Unit) is installed in the air conditioning machine room. After the installation of the air-conditioning equipment, work such as installation and wiring of various sensors and installation of cable racks are required. In the renewal of existing air-conditioning equipment, processing work is also required to match the construction specifications with the existing equipment, so it has been required to reduce the work man-hours and shorten the construction period in the construction of the air-conditioning equipment. Further, since various sensors are mounted outside the air-conditioning equipment, it is limited to secure a maintenance space in a limited space such as an air-conditioning machine room.

Therefore, it is an object of the present invention to reduce the work man-hours required for the construction of the air conditioning equipment and to improve the maintainability.

In order to solve the above problems, the present invention assembles and integrates air-conditioning parts arranged on an air path into a ready-made air-conditioning device, and connects the ready-made air-conditioning device and the external air-conditioning equipment through the air-conditioning part. I decided to connect.

Specifically, the present invention is a construction method for installing an air-conditioning device, in which an air-conditioning component arranged on an air path of a ready-made air-conditioning device that adjusts the temperature of air passing through the machine is used as a ready-made air-conditioning device. The manufacturing process for processing so that it can be assembled, the assembly process for assembling and integrating air-conditioning parts to ready-made air-conditioning equipment, and the ready-made air-conditioning equipment and external air-conditioning equipment are integrated into the ready-made air-conditioning equipment. It has a connecting process of connecting through air-conditioning parts.

The air-conditioning component is, for example, a chamber connecting the air-conditioning equipment and the air-conditioning duct, various sensors assembled in the machine, and a variable air volume (VAV, Variable Air Volume) device. Examples of the air-conditioning device include a fan coil unit (FCU Fan Coil Unit) that air-conditions each room, and an AHU that is installed in the air-conditioning machine room and supplies cold and hot water to each FCU. With the above construction method, by assembling the air-conditioning parts to the ready-made air-conditioning equipment and connecting the air-conditioning parts to the air-conditioning equipment outside the machine, it is possible to reduce the work man-hours required for the construction of the air-conditioning equipment.

In the manufacturing process, a sensor that measures the state of air passing through the air path or a device that controls the air volume of air passing through the air path is processed as an air conditioning component so that it can be assembled into ready-made air conditioning equipment. There may be. With such a construction method, by assembling various air-conditioning parts in the machine in advance, the time required for instrumentation work for installing the various air-conditioning parts outside the machine after installing the air-conditioning equipment can be shortened. Further, since various air-conditioning parts are assembled inside the machine, wiring outside the machine is reduced, and it becomes easy to secure a maintenance space in a limited space such as an air-conditioning machine room.

Further, in the assembling step, a rod-shaped member may be arranged on the air path in the ready-made air-conditioning device, and the air-conditioning component may be assembled and integrated with the ready-made air-conditioning device via the rod-shaped member. .. With such a construction method, the sensor can be supported by a rod-shaped member, and various sensors can be easily installed and updated.

According to the present invention, it is possible to reduce the work man-hours required for the construction of the air conditioning equipment and improve the maintainability.

FIG. 1 is a perspective view from the upper right side illustrating a shared chamber. FIG. 2 is a perspective view of the shared chamber of FIG. 1 as viewed from the upper left side. FIG. 3 is a perspective view illustrating the configuration of a sliding flange of a shared chamber. FIG. 4 is a partial cross-sectional view of the shared chamber cut along the line AA of FIG. 2 before and after construction. FIG. 5 is a diagram illustrating a construction example for adjusting the connection between the shared chamber and the air conditioning duct. FIG. 6 is an example of a plan view and a side view of an AHU to which a shared chamber is attached. FIG. 7 is a modification of the plan view and side view of the AHU to which the shared chamber is attached. FIG. 8 is a modification of the plan view and side view of the AHU to which the shared chamber is attached. FIG. 9 is a diagram illustrating the effect of reducing man-hours when the shared chamber according to the embodiment is used. FIG. 10 is a perspective view from the lower left side of the FCU. FIG. 11 is a left side view of the FCU before and after opening and closing the drain pan. FIG. 12 is a diagram illustrating the positional relationship between the FCU and the inspection port. FIG. 13 is a diagram illustrating a man-hour reduction effect when the FCU according to the embodiment is used. FIG. 14 is a diagram comparing the installation positions of the air conditioning parts according to the comparative example and the embodiment. FIG. 15 is a diagram illustrating the assembly of air conditioning parts to a hybrid air conditioner. FIG. 16 is a diagram illustrating a construction process of a hybrid air conditioner. FIG. 17 is a diagram illustrating the effect of reducing man-hours when a hybrid air conditioner is used. FIG. 18 is a diagram illustrating a cost reduction effect when a hybrid air conditioner is used.

Hereinafter, embodiments of the present invention will be described. The embodiments shown below exemplify one aspect of the present invention, and do not limit the technical scope of the present invention to the following aspects.

In the air conditioning equipment of a large facility, an air conditioning device that regulates the temperature and humidity of air, for example, AHU, is installed in a dedicated machine room or the like. The AHU takes in outside air into the machine and blows temperature-controlled air through an air conditioning duct. Further, the AHU supplies cold / hot water to an air conditioner installed in each room, for example, an FCU. The FCU has a built-in heat exchanger, blower, air filter, etc., and can control the temperature of each room by controlling the flow rate of the cold / hot water supplied from the AHU.

A box-shaped chamber is connected on the air path between an air conditioner such as an AHU or FCU and an air conditioner duct for the purpose of absorbing noise or mixing or branching air. In addition, air-conditioning parts such as the inside of the air-conditioning equipment, the chamber, various sensors that measure the temperature or humidity of the air flowing through the air-conditioning duct, and the VAV device that adjusts the amount of air for air supply are installed on the air path. Will be done.

In the present embodiment, in the construction of the air-conditioning equipment, the air-conditioning parts such as the chamber and various sensors are assembled and integrated with the ready-made air-conditioning equipment before the ready-made air-conditioning equipment is installed at the installation place. When the air conditioning equipment is connected to a plurality of air conditioning ducts, the air conditioning equipment is connected to a plurality of chambers for each air conditioning duct. In the present embodiment, by partitioning the inside of the chamber for each air path, a shared chamber in which a plurality of chambers are integrated may be assembled to the air conditioner.

By assembling and integrating the air-conditioning parts to the air-conditioning equipment in this way and then installing the air-conditioning equipment at the installation location, the man-hours for connecting or installing the air-conditioning parts after the installation of the air-conditioning equipment can be reduced. Further, by assembling the air-conditioning parts to the ready-made air-conditioning equipment in advance, the work in a limited space or the work in a high place is reduced, and the work efficiency and safety are improved.

<Common chamber>
FIG. 1 is a perspective view from the upper right side illustrating a shared chamber. Further, FIG. 2 is a perspective view of the shared chamber of FIG. 1 as viewed from the upper left side. The shared chamber 20 has a casing having an opening 21a to an opening 21d (hereinafter, also collectively referred to as an opening 21) connected to an air conditioning duct (not shown) that serves as an air flow path between the AHU and the outside of the AHU. The body. The shared chamber 20 is placed on the upper surface of the AHU and installed. On the upper surface of the AHU, there are an air supply port for supplying air indoors, an outside air port for taking in outside air, a return air port for taking in indoor air, and an exhaust port for discharging air to the outside of the building. It is provided. The shared chamber 20 has a communication port 22d (hereinafter, also collectively referred to as a communication port 22) from a communication port 22a that communicates with an air supply port, an outside air port, a return air port, and an exhaust port provided on the upper surface of the AHU. ..

In the example of FIG. 1, the inside of the shared chamber 20 is partitioned from the space S1 to the space S3 by the separator 23a and the separator 23b. The space S1 has an opening 21a and a communication port 22a, and is separated from the space S2 by a separator 23a. The space S2 has an opening 21b, an opening 21c, a communication port 22b, and a communication port 22c, and is partitioned from the space S1 and the space S3 by the separator 23a and the separator 23b, respectively. Further, the space S2 is partitioned by a separator (not shown) into a path for circulating the outside air flowing in from the opening 21b to the communication port 22b and a path for circulating the return air flowing in and out of the opening 21c to the communication port 22c. The space S3 has an opening 21d and a communication port 22d, and is separated from the space S2 by a separator 23b. By partitioning the inside of the common chamber 20, an individual air path is formed for each of supply air, outside air and return air, and exhaust air. By partitioning the inside of one housing into a shared chamber 20 without providing individual chambers for supply air, outside air, return air, and exhaust air, the number of parts can be reduced and construction can be rationalized. Will be.

The shape of the housing forming the air path, the position and shape of the opening 21, the position and shape of the communication port 22, and the arrangement of the separator 23a and the separator 23b are not limited to the examples of FIGS. It can be changed as appropriate according to the model or installation location. Further, the shared chamber 20 includes a connecting member and a holding frame for connecting to the air conditioning duct in each of the openings 21a to 21d, as shown in FIG.

FIG. 3 is a perspective view illustrating the configuration of a sliding flange of a shared chamber. The shared chamber 20 includes a housing 24, a connecting member 25, and a holding frame 26. The housing 24 has an opening 21 on the connecting surface of the air conditioning duct, and is connected to the air conditioning duct via the connecting member 25 and the holding frame 26.

The connecting member 25 has a vent 251 and a flange 252. The ventilation holes 251 form an air path through which the air flowing into the air conditioning duct or the air taken in from the air conditioning duct flows. The ventilation hole 251 may be any as long as air can flow in and out of the air conditioning duct, and is not limited to the case where the cross section is a rectangular cylinder as shown in FIG. The tubular member of FIG. 3 may be, for example, cylindrical, or the end face of the air conditioning duct may be joined to the flange 252 without providing the tubular member. The flange 252 is slidably abutted against the connecting surface of the air conditioning duct of the housing 24. The connecting member 25 can be slid on the connecting surface of the air conditioning duct to the extent that the ventilation hole 251 overlaps with the opening 21 provided on the connecting surface of the air conditioning duct. The position of the air conditioning duct may be displaced from the opening 21 during on-site construction. Therefore, the displacement can be eliminated by fixing the connecting member 25 with the holding frame 26 in a state where the connecting member 25 is slid to a position where it can be connected to the air conditioning duct.

The presser frame 26 has an insertion hole 261 that is larger than the outer circumference of the ventilation hole 251 and smaller than the outer circumference of the flange 252. The holding frame 26 is fixed by pressing the outer periphery of the flange 252 of the connecting member 25 in a state where the connecting member 25 is slid to a position where it can be connected to the air conditioning duct.

In addition, in order to seal the air flowing in and out between the air conditioning duct and the opening 21 so as not to leak, along the outer edge of the holding frame 26, between the flange 252 and the connection surface of the air conditioning duct, Packing 27a and packing 27b may be attached.

FIG. 4 is a partial cross-sectional view of the shared chamber cut along the line AA of FIG. 2 before and after construction. The figure on the left side of FIG. 4 is a partial cross-sectional view of the shared chamber 20 before construction. Further, the figure on the right side of FIG. 4 is a partial cross-sectional view of the shared chamber 20 after construction. First, the flange 252 of the connecting member 25 comes into contact with the connection surface of the housing 24 with the air conditioning duct 30. Next, the holding frame 26 inserts the connecting member 25 into the insertion hole 261 and presses the flange 252. The connecting member 25 is slid to a position where it can be connected to the air conditioning duct 30, and the fixing position is adjusted. After adjusting the position for fixing the connecting member 25, the holding frame 26 is fixed to the housing 24 by, for example, a bolt 28 while holding the flange 252. In the example of FIG. 4, the packing 27a and the packing 27b are attached to the outer edge of the holding frame 26. The packing 27a seals between the flange 252 of the connecting member 25 and the holding frame 26. The packing 27b seals between the connection surface of the housing 24 with the air conditioning duct 30 and the holding frame 26.

FIG. 5 is a diagram illustrating a construction example for adjusting the connection between the shared chamber and the air conditioning duct. In FIG. 5, the same configuration as in FIG. 4 is designated by the same reference numerals, and the description thereof will be omitted. Further, in FIG. 5, the packing 27a and the packing 27b are not shown.

The figure on the left side of FIG. 5 shows that the central axis X1 of the tubular portion of the connecting member 25 and the central axis X2 of the cross section of the air conditioning duct 30 connected to the shared chamber 20 are deviated from each other. In the figure on the left side of FIG. 5, the central axis X1 of the tubular portion of the connecting member 25 coincides with the central axis of the opening of the shared chamber 20. The flange 252 of the connecting member 25 is slidable on the connection surface of the housing 24 with the air conditioning duct 30. Further, the connecting member 25 is movable within the range of the insertion hole 261 of the holding frame 26. In the figure on the left side of FIG. 5, the connecting member 25 is slid in the direction of the arrow Y in order to adjust the connection between the shared chamber 20 and the air conditioning duct 30. As shown in the figure on the right side of FIG. 5, the connecting member 25 is slid to a position where the central axis X1 coincides with the central axis X2 and is connected to the air conditioning duct 30. In this way, even when the central axis X1 of the cylinder portion of the connecting member 25 (that is, the axis passing through the center of the opening of the shared chamber 20) and the central axis X2 of the cross section of the air conditioning duct 30 are deviated from each other. It is possible to connect the shared chamber 20 and the air conditioning duct 30 by adjusting the connection at the time of construction at the site.

<Installation of shared chamber>
FIG. 6 is an example of a plan view and a side view of an AHU to which a shared chamber is attached. A plan view is shown on the upper side of FIG. 6, and a side view is shown on the lower side. The shared chamber 20 is mounted on the upper surface of the AHU 10. An air supply port 11a, an outside air port 11b, a return air / return air exhaust port 11c, and an exhaust port 11d (hereinafter, collectively referred to as an air control port 11) are provided on the upper surface of the AHU 10. The return air / return air exhaust port 11c may be divided into a return air port and a return air exhaust port according to the position of the separator 23 in the shared chamber 20. The shared chamber 20 (housing 24) has a communication port 22a to a communication port 22d corresponding to each of the air control ports 11. The inside of the common chamber 20 is partitioned by a separator 23 so that the supply air, the outside air, the return air, and the exhaust air circulate through individual routes. The return air path in the shared chamber 20 may be further partitioned by a separator (not shown) into a path for the return air to flow in and a path for the return air to flow out. The shared chamber 20 may be manufactured by partitioning it with a separator 23, or may be manufactured by combining a plurality of chambers and integrating them. The air-conditioning duct 30a for air supply is connected to the opening 21a of the housing 24, and the air supplied from the air supply port 11a of the AHU 10 is blown indoors. The air conditioning duct 30b for outside air is connected to the opening 21b of the housing 24, and the outside air taken in from the outside is blown to the outside air port 11b of the AHU10. The opening 21c is connected to an air-conditioning duct 30 for return air (not shown), and the return air taken in from the room is blown to the return air / return air exhaust port 11c of the AHU 10. The opening 21d is connected to an air conditioning duct 30 for exhaust (not shown), and the exhaust discharged from the exhaust port 11d of the AHU 10 is discharged to the outside.

Each opening 21 is connected to the corresponding air conditioning duct via the connecting member 25 and the holding frame 26 shown in FIG. The connecting member 25 can be slid on the connection surface with the air conditioning duct provided with the opening 21. Therefore, conventionally, the chamber is manufactured after measuring the dimensions of the connection between the air conditioning duct and the chamber, but in the shared chamber 20 of the present embodiment, the connecting member 25 is positioned at a position where the connecting member 25 can be connected to the air conditioning duct. By sliding it, it is possible to adjust the connection during construction at the site.

Further, conventionally, the air supply port 11a, the outside air port 11b, the return air / return air exhaust port 11c, and the exhaust port 11d have been connected to individual chambers suspended from the ceiling. In the present embodiment, the shared chamber 20 in which the individual chambers are integrated and the inside is partitioned from the communication port 22a communicating with the air supply port 11a or the like according to the position of the communication port 22d is placed on the AHU 10. Therefore, the man-hours required for construction can be reduced and the construction can be rationalized.

FIG. 7 is a modification of the plan view and side view of the AHU to which the shared chamber is attached. A plan view is shown on the upper side of FIG. 7, and a side view is shown on the lower side. In the example of FIG. 7, the shared chamber 20 is a chamber installed between an air supply port 11a and an air conditioning duct 30 for air supply (not shown), an outside air port 11b, a return air / return air exhaust port 11c, and an exhaust port. It is divided into two chambers, which are the chambers installed between the 11d and 11d. Further, inside the chamber installed between the outside air port 11b, the return air / return air exhaust port 11c, and the exhaust port 11d, for example, the outside air, the return air, and the exhaust are individually routed by the separator 23 shown in FIG. Is partitioned so that it can be distributed. The opening 21d is connected to the air conditioning duct 30d for exhaust. Since the other components are the same as those in FIG. 6 except that the arrangement is different, the same numbers are assigned and the description thereof will be omitted.

FIG. 8 is a modification of the plan view and side view of the AHU to which the shared chamber is attached. A plan view is shown on the upper side of FIG. 8, and a side view is shown on the lower side. In the example of FIG. 8, similarly to FIG. 7, the shared chamber 20 includes a chamber installed between the air supply port 11a and the air conditioning duct 30 for air supply (not shown), and the outside air port 11b, return air / return air. It is divided into two chambers, which are chambers installed between the exhaust port 11c and the exhaust port 11d. Further, inside the chamber installed between the outside air port 11b, the return air / return air exhaust port 11c, and the exhaust port 11d, for example, the separator 23 shown in FIG. 8 allows the outside air, return air, return air exhaust, and exhaust to be exhausted. Each is partitioned so that it is distributed through individual routes. In this case, it is assumed that the return air / return air exhaust port 11c is divided into a return air port and a return air exhaust port. The opening 21c is connected to the air conditioning duct 30d for returning air.

Since the shared chamber 20 shown in FIGS. 7 and 8 is mounted on the upper surface of the AHU 10 by integrating a part of the chamber, it is larger than the case where individual chambers are hung from the ceiling and connected to each air control port 11. , The work man-hours required for construction are reduced. The inside of the shared chamber 20 is not limited to the cases illustrated in FIGS. 1, 6 to 8, and if the supply air, the outside air, the return air, and the exhaust are partitioned so as to circulate through individual routes. good. Further, the shared chamber 20 may be manufactured by integrating a plurality of chambers through which supply air, outside air, return air, and exhaust air flow.

FIG. 9 is a diagram illustrating the effect of reducing man-hours when the shared chamber according to the embodiment is used. First, the construction flow by the conventional construction of AHU10 will be described. In conventional construction, each air control port 11 such as the air supply port 11a of the AHU 10 is connected to a separate chamber suspended from the ceiling. In the skeleton work, an insert for installing the chamber is driven (A01). In duct work, each chamber is previously suspended from the ceiling (A02). After that, the AHU10 is carried in and installed (A03). Each chamber is installed by being connected to each air control port 11 such as the air supply port 11a of the AHU 10, and the connection dimension with the air conditioning duct is measured (A04). Depending on the dimensioning arrangement, an air conditioning duct connected to the chamber installed in the AHU10 is manufactured (A05). The remaining unconstructed air conditioning ducts are connected (A06). Heat insulation work is carried out to install a heat insulating material at the connection portion of the air conditioning duct (A07).

Next, the construction flow when the shared chamber 20 according to the embodiment is used will be described. The shared chamber 20 is installed on the AHU10 instead of being hung from the ceiling, and is carried in and installed together with the AHU10 (A11). That is, each process of A01, A02, A04, and A05 in the conventional construction becomes unnecessary, and the process is reduced to one process of carrying in and installing (A11) the AHU10 in which the shared chamber 20 is installed. The work of connecting the remaining unconstructed air-conditioning ducts (A12) and the heat-retaining work of the connection portion of the air-conditioning ducts (A13) are the same as the steps of the conventional works A06 and A07, respectively.

Further, the expected effect when the shared chamber 20 according to the embodiment is used will be described. When the shared chamber 20 according to the embodiment is used, the number of man-hours and the number of days can be shortened by reducing the number of processes. For example, the man-hours for installing one AHU10 are reduced by about 46%. If two AHU10s are installed on 22 floors for each floor, the man-hours for 2 units / floor x 22 floors = 44 units will be reduced by about 46%. In addition, the number of days when two AHU10s are installed on one floor is shortened from 8 days to 3 days, and the construction period of 5 days, which corresponds to about 62% per floor, is shortened. When two AHU10s are installed on each of the 22 floors, it is expected that the number of days of 5 days / floor x 22 floors = 110 days (about 3.5 months) will be reduced.

By constructing the air-conditioning equipment using the shared chamber, the work man-hours can be reduced as compared with the case where an individual chamber is installed for each air-conditioning duct connected to the air-conditioning equipment. Further, when the individual chambers are installed after the air conditioning equipment is installed, the work space is limited, so that the work efficiency is lowered. By assembling the shared chamber to the air conditioner before installing the air conditioner, the time required for assembling to the air conditioner can be shortened. Further, since the air path is partitioned for each air conditioning duct inside the shared chamber, air can flow without being mixed with each other.

<Fan coil unit>
FIG. 10 is a perspective view from the lower left side of the FCU. The FCU 40 includes a chamber box 41, a heat exchanger 42, a fan unit 43, and a drain pan 44. The chamber box 41 has an air conditioning duct connection port 411 for connecting an air conditioning duct for supply or return air. The heat exchanger 42 accommodates a cold water coil and a hot water coil through which cold / hot water supplied from the AHU 10 flows, inside the housing. The chilled water coil is connected to the water outlet 421 and the water inlet 422, and recirculates chilled water to and from the AHU 10 during cooling. The hot water coil is connected to the hot water outlet 423 and the hot water inlet 424, and recirculates hot water to and from the AHU 10 during heating. The fan unit 43 includes a fan motor (not shown) inside. The air blown by the fan motor is temperature-controlled by the cold water coil or the hot water coil of the heat exchanger 42, and is blown into the room through the chamber box 41 and the air conditioning duct.

The drain pan 44 is closed during the operation of the FCU 40, and receives and stores the dew condensation generated in the heat exchanger 42. The drain pan 44 can be opened in a state where one side is fixed to the bottom surface side of the housing of the heat exchanger 42 by a hinge or the like during maintenance by an operator. Workers can easily perform maintenance such as cleaning without removing the drain pan 44 even in a narrow space such as a ceiling. The drain pan 44 is provided with a drain port 441 for draining the accumulated dew condensation on the side opposite to the position where the drain pan 44 is assembled to the housing by the hinge. When the drain pan 44 is opened, the dew condensation accumulated in the drain pan 44 during the operation of the FCU 40 flows toward the drain port 441 and is drained from the drain port 441.

FIG. 11 is a left side view of the FCU according to the embodiment before and after opening and closing the drain pan. The drain pan 44 is, for example, fixed to the housing of the heat exchanger 42 so as to be openable and closable by a hinge or the like on the side facing the position where the drain port 441 is provided. The drain pan 44 is closed and becomes horizontal during the operation of the FCU 40, and receives and stores the dew condensation generated in the heat exchanger 42. When the drain pan 44 is opened, the accumulated dew condensation is drained.

FIG. 12 is a diagram illustrating the positional relationship between the FCU and the inspection port. FIG. 12 shows a top view of the FCU, and the same configurations as those in FIG. 10 are designated by the same reference numerals, and the description thereof will be omitted. Further, in FIG. 12, the fan unit 43 includes a fan motor 431 inside. FIG. 12 shows a state in which the FCU 40 is installed in the ceiling space and an inspection port 50 is provided on the ceiling as an entrance / exit when maintaining the FCU 40. The construction and maintenance of the FCU 40 is carried out through the inspection port 50 provided on the ceiling. Since the space in the ceiling is limited, workability from the inspection port 50 can be improved by performing maintenance such as cleaning by opening and closing the drain pan 44 attached to the FCU 40 without removing the drain pan 44 from the FCU 40. ..

FIG. 13 is a diagram illustrating a man-hour reduction effect when the FCU according to the embodiment is used. First, the construction flow by the conventional construction of FCU40 will be described. In conventional construction, the FCU 40 is not integrated with the chamber box 41 and is installed separately from the chamber box 41. In the skeleton work, an insert for installing the chamber is driven (B01). The FCU 40 and the chamber box 41 are carried in separately (B02). The chamber box 41 is supported by an insert and assembled to the FCU 40 (B03). Insulation work is carried out for the assembled part (B04). Suspend the FCU40 (B05), attach a temporary filter for test run, and check if maintenance space can be secured (B06).
After the test run, the temporary filter is removed (B07).

Next, the construction flow in the case of using the FCU 40 according to the embodiment integrated with the chamber box 41 will be described. The FCU 40 is preliminarily integrated with the chamber box 41, and is installed with a temporary filter attached. That is, each work from B01 to B04 for assembling the chamber box 41 after carrying in the FCU 40 becomes unnecessary, and the number of steps is reduced to one step of carrying in the FCU 40 integrated with the chamber box 41 (B11). Since the temporary filter is attached to the FCU 40 in advance, the conventional B06 step is omitted. When the FCU 40 is suspended (B12), a test run is executed. Similar to the conventional B07 process, the temporary filter is removed after the test run (B13).

Further, the expected effect when the FCU 40 according to the embodiment integrated with the chamber box 41 is used will be described. When the FCU 40 according to the embodiment integrated with the chamber box 41 is used, the number of man-hours and the number of days can be shortened by reducing the number of processes. For example, the man-hours for installing 30 FCU40s are reduced by about 59%. In addition, the number of days for installing 30 FCU40s will be shortened from 7.2 days to 3.2 days, and it is expected that the construction period of 4 days, which corresponds to about 55%, will be shortened.

Since the FCU is installed on the ceiling or the like with the air-conditioning parts such as the chamber box 41 and the drain pan 44 attached to the air-conditioning equipment, the work required for the construction is larger than the case where the air-conditioning parts are installed after the air-conditioning equipment is installed. Man-hours are reduced. In addition, safety is ensured because work at high places is reduced. Further, the drain pan 44 is assembled so as to be openable and closable via a hinge, and the work efficiency is improved when performing maintenance work such as cleaning and drainage of dew condensation from the inspection port on the ceiling.

<Hybrid air conditioner>
Renewal work for air conditioning equipment in large facilities is required to be carried out in a short period of time. Conventionally, air-conditioning parts such as various sensors and VAV devices have been assembled to the air-conditioning equipment after the installation of the air-conditioning equipment 10. Wiring work for air-conditioning parts requires processing of electrical piping and cable racks. In addition, when assembling air-conditioning parts to the air-conditioning equipment after installation, it may take time because the work is performed in a limited space. Further, since the air-conditioning component is installed on the upper part of the air-conditioning device 10, it may take time to install the scaffolding. Therefore, in the present embodiment, the air-conditioning parts such as various sensors are assembled to the air-conditioning equipment 10 before the installation of the air-conditioning equipment 10. The air conditioner 10 to which the air conditioner parts are assembled in advance is also referred to as a hybrid air conditioner hereafter.

FIG. 14 is a diagram comparing the installation positions of the air conditioning parts according to the comparative example and the embodiment. The figure on the left side of FIG. 14 illustrates the installation position of the conventional air conditioning component. The air-conditioning parts such as the dew point temperature sensor 61, the temperature / humidity sensor 62, the CO ₂ concentration meter 63, and the VAV device 64 are installed on the outer upper part of the air-conditioning device 10 after the installation of the air-conditioning device 10. Wiring work in a limited space is inefficient, and the length of the wiring cable used is longer than when it is installed in the machine.

On the other hand, the figure on the right side of FIG. 14 illustrates the installation position of the air conditioning component in the present embodiment. In the hybrid air conditioner 10A, the dew point temperature sensor 61, the temperature / humidity sensor 62, the CO ₂ concentration meter 63, and the VAV device 64 are assembled in the machine of the hybrid air conditioner 10A. Since the hybrid air conditioner 10A is installed in the air conditioning machine room or the like after assembling the air conditioning parts, the work man-hours are reduced as compared with the case where the air conditioning parts are assembled after the installation.

FIG. 15 is a diagram illustrating the assembly of air conditioning parts to a hybrid air conditioner. The dew point temperature sensor 61, the temperature / humidity sensor 62, the CO ₂ concentration meter 63, and the VAV device 64 are assembled in the hybrid air conditioner 10A before the hybrid air conditioner 10A is installed in the air conditioning machine room or the like. Inside the hybrid air conditioner 10A, a sensor mounting short pipe 65 for supporting each air conditioning component is arranged. Each air-conditioning component is assembled to the sensor mounting short pipe 65.

The various sensors are sensors that measure the state of the air flowing in the machine, and are installed on the air path inside the machine. Further, the VAV device 64 is a device for adjusting the cooling / heating capacity by changing the amount of air blown, and may be installed on the air path in the machine. The sensor mounting short tube 65 is an example of a “rod-shaped member”.

FIG. 16 is a diagram illustrating a construction process of a hybrid air conditioner. The process shown in FIG. 16 is an update process when updating the air conditioning equipment in the existing facility. The portion surrounded by the dotted line is a process that is no longer necessary in the construction process of the hybrid air conditioner 10A according to the present embodiment among the conventional construction processes.

For example, in the hybrid air conditioner 10A, since various air conditioning parts are assembled in the machine in advance, the time required for instrumentation work for installing various air conditioning parts outside the machine after the installation of the hybrid air conditioner 10A is shortened. Due to the shortened time of instrumentation work, other work such as duct work, plumbing work, heat insulation work, etc. can be started later than the conventional 6:30. Therefore, construction work in the early morning becomes unnecessary, and extra labor costs after hours due to early departure are reduced.

In addition, since there is no need for instrumentation work such as pre-processing of electrical piping, installation of racks and pipes, installation of various equipment, and wiring connections, the heat insulation of duct pipes and in-panel connections that were carried out after these instrumentation works are , Can be carried out ahead of schedule. In addition, by reducing the man-hours required for various instrumentation works, it is possible to carry out the work in time, and the extra labor cost after overtime due to early departure and overtime work is reduced. Furthermore, the complexity of work between the industries in charge of each work is reduced, safety and quality management are facilitated, and the efficiency of each work is improved.

FIG. 17 is a diagram illustrating the effect of reducing man-hours when a hybrid air conditioner is used. In the example of FIG. 17, when the hybrid air conditioner 10A is adopted, the man-hours required for each work are calculated, with the man-hours required for the work of temperature / humidity / stall temperature / CO ₂ sensor installation (process (1)) being 1. To. In the case of conventional construction, temperature / humidity / stall temperature / CO ₂ sensor installation (process (1)), outside air VAV wiring / piping / connection (process (2)), and external wiring / piping / rack installation (process (process (1)) The man-hours required for the work of 4)) are assumed to be 2, 2, and 8, respectively. The man-hours are 0 because the work of in-flight wiring / support hardware installation (process (3)) and VAV and other duct material installation (process (5)), which are carried out to assemble the air-conditioning parts in the machine, does not occur. It has become. In the case of conventional construction, the total number of man-hours is 12.

When the hybrid air conditioner 10A is adopted, the man-hours required for the work of the process (1), the process (2) and the process (4) are assumed to be 1, 1 and 2, respectively. In conventional construction, various air conditioning parts are installed on the upper part of the hybrid air conditioner 10A after the hybrid air conditioner 10A is installed. Therefore, the work in the process (1), the process (2), and the process (4) is a work at a high place and an unstable posture. On the other hand, in the hybrid air conditioner 10A, since various air conditioning parts are assembled in the machine before installation, workability is improved as compared with the conventional construction. Further, since some work such as rack mounting is not required, when the hybrid air conditioner 10A is adopted, the man-hours related to the work of the step (1), the step (2) and the step (4) are reduced. Since the man-hours required for the steps (3) and steps (5) to be assembled in the machine are assumed to be 1, if the hybrid air conditioner 10A is adopted, the total man-hours will be. It becomes 6. That is, in the example shown in FIG. 17, when the hybrid air conditioner 10A is adopted, it is expected that the man-hours will be reduced by about 50% as compared with the case of the conventional construction.

FIG. 18 is a diagram illustrating a cost reduction effect when a hybrid air conditioner is used. FIG. 18 shows the cost reduction effect with respect to the steps (1) to (5) shown in FIG. In the example of FIG. 18, when the hybrid air conditioner 10A is adopted, the cost of each work is calculated with the cost of the work of the step (2) as 100. In the case of the conventional construction, the costs for the work of the process (1), the process (2) and the process (4) are assumed to be 1300, 200 and 1500, respectively. Since there is no cost for process (3) and process (5), the total cost is 3000 in the case of conventional construction.

When the hybrid air conditioner 10A is adopted, the costs for the process (1), the process (2), and the process (4) are assumed to be 300, 100, and 100, respectively. When the hybrid air conditioner 10A is adopted, the workability is improved and a part of the members used for the external wiring is not required. Therefore, the cost for the process (1), the process (2) and the process (4) is high. It will be reduced. Since the costs for the steps (3) and (5) to be carried out for assembling various air conditioning parts in the machine are assumed to be 100 and 200, respectively, when the hybrid air conditioner 10A is adopted, the total cost is It becomes 1500. That is, in the example shown in FIG. 18, when the hybrid air conditioner 10A is adopted, the cost is expected to be reduced by about 50% as compared with the case of the conventional construction.

By assembling various sensors and the like before installing the air-conditioning equipment 10, the wiring cable and the cable rack that accommodates the wiring cables arranged when various sensors and the like are installed outside the air-conditioning equipment 10 can be used. It becomes unnecessary, and the work man-hours and costs can be reduced. Further, since various air-conditioning parts are assembled inside the machine, wiring outside the machine is reduced, and it becomes easy to secure a maintenance space in a limited space such as an air-conditioning machine room.

10 ... Air conditioning equipment, AHU: 10A ... Hybrid air conditioner: 11 ... Air control port: 11a ... Air supply port: 11b ... Outside air port: 11c ... Return air / Return air exhaust port: 11d ... Exhaust Port: 20 ... Shared chamber: 21,21a, 21b, 21c, 21d ... Opening: 22, 22a, 22b, 22c, 22d ... Communication port: 23, 23a, 23b ... Separator: 24 ... Housing : 25 ... Connecting member: 251 ... Vent hole: 252 ... Flange: 26 ... Press frame: 261 ... Insertion hole: 27a, 27b ... Packing: 30, 30a, 30b, 30c, 30d ... Air conditioning duct : 40 ... FCU: 41 ... Chamber box: 411 ... Air conditioning duct connection port: 42 ... Heat exchanger: 43 ... Fan unit: 431 ... Fan motor: 44 ... Drain pan: 441 ... Drain port: 61 ... Dew point temperature sensor: 62 ... Temperature / humidity sensor: 63 ... CO ₂ densitometer: 64 ... VAV device: 65 ... Short tube for sensor mounting

Claims (2)

It is a construction method that has an air intake port and an air supply port, and installs an air conditioning device that regulates the temperature of the air passing through the aircraft.
It is an assembly process in which air-conditioning parts arranged on the air path of the air-conditioning equipment, including a chamber for taking in air and a chamber for supplying air, are assembled to the air-conditioning equipment and integrated. The chamber for taking in the air is placed in the air conditioner and installed in the port for taking in the air, and the chamber for supplying the air is placed in the air conditioner and installed in the port for supplying the air. Then, an assembly process in which the chamber for taking in the air and the chamber for supplying the air are integrated with the air conditioner, respectively,
The carry-in process of bringing in the air-conditioning equipment, in which the chamber for taking in the air and the chamber for supplying the air are integrated, to the installation site, and the carry-in process.
The air-conditioning equipment and the external air-conditioning equipment, in which the chamber for taking in the air and the chamber for supplying the air, which were carried in in the carry-in step, are integrated, and the air integrated in the air-conditioning equipment are used. It has a connecting step of connecting through a chamber to take in and a chamber to supply the air.
Construction method. It is a construction method that has an air intake port and an air supply port, and installs an air conditioning device that regulates the temperature of the air passing through the aircraft.
It is an assembly process in which air-conditioning parts arranged on the air path of the air-conditioning equipment, including a chamber for taking in air and a chamber for supplying air, are assembled to the air-conditioning equipment and integrated. The chamber for taking in the air is placed in the air conditioner and installed in the port for taking in the air, and the chamber for supplying the air is placed in the air conditioner and installed in the port for supplying the air. Then, an assembly process in which the chamber for taking in the air and the chamber for supplying the air are integrated with the air conditioner, respectively,
The installation process of installing the air conditioner in which the chamber for taking in the air and the chamber for supplying the air are integrated in the installation place including the ceiling, and
The air-conditioning equipment and the external air-conditioning equipment installed in the installation step, in which the chamber for taking in the air and the chamber for supplying the air are integrated, are combined with the air integrated in the air-conditioning equipment. It has a connecting step of connecting through a chamber to take in and a chamber to supply the air.
Construction method.

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