JP7277547B2 - Construction method - Google Patents

Description

The present invention relates to a construction method.

The importance of air conditioning is increasing with global warming, and there is a demand for cost reductions in the construction and maintenance of air conditioning equipment. Furthermore, due to the declining birthrate and aging population in recent years, the working population has decreased, making it difficult to secure personnel for construction and maintenance. Various techniques have been proposed to streamline the construction and maintenance of air conditioning equipment (see Patent Literature 1, for example).

JP-A-05-272778

Since air conditioning equipment is installed in a limited space such as an air conditioning machine room or a ceiling where workability is poor, it is constructed according to an orderly procedure. 2. Description of the Related Art In air conditioning equipment for large facilities such as buildings, for example, air conditioning equipment (AHU, Air Handling Unit) is installed in an air conditioning machine room. After the installation of air conditioners, work such as mounting and wiring of various sensors and installation of cable racks occurs. Renewal of existing air conditioning equipment requires processing work to align construction specifications with existing equipment, so there was a need to reduce the number of man-hours and shorten the construction period in the construction of air conditioning equipment. In addition, since various sensors are mounted outside the air conditioner, maintenance space is limited in a limited space such as an air conditioner machine room.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to reduce the number of man-hours required for construction of air conditioning equipment and to improve maintainability.

In order to solve the above-mentioned problems, the present invention integrates an air-conditioning component arranged on an air path with a ready-made air-conditioning equipment so that the ready-made air-conditioning equipment and the outside air-conditioning equipment are connected through the air-conditioning component. decided to connect.

Specifically, the present invention relates to a construction method for installing an air conditioner, in which an air conditioning component arranged on an air path of a ready-made air conditioner for adjusting the temperature of air passing through the machine is attached to the ready-made air conditioner. The manufacturing process for processing so that it can be assembled, the assembly process for assembling air conditioning parts into existing air conditioning equipment and integrating them, and the existing air conditioning equipment and outside air conditioning equipment are integrated into the existing air conditioning equipment. and a connecting step for connecting through the air conditioning component.

The air-conditioning parts are, for example, chambers that connect air-conditioning equipment and air-conditioning ducts, various sensors installed inside the machine, and variable air volume (VAV) devices. Examples of the air conditioner include a fan coil unit (FCU Fan Coil Unit) for air conditioning in each room, and an AHU installed in the air conditioning machine room to supply cold and hot water to each FCU. With the construction method described above, the air-conditioning parts are attached to the ready-made air-conditioning equipment and connected to the outside air-conditioning equipment through the air-conditioning parts, thereby reducing the man-hours required for constructing the air-conditioning equipment.

In addition, in the manufacturing process, a sensor that measures the condition of the air passing through the air path or a device that controls the amount of air passing through the air path is processed as an air conditioning part so that it can be assembled into an existing air conditioner. There may be. With such a construction method, by assembling various air conditioning components in advance in the machine, the time required for instrumentation work for installing various air conditioning components outside the machine after installation of the air conditioning equipment can be shortened. In addition, since various air-conditioning parts are assembled inside the machine, wiring outside the machine is reduced, making it easier to secure maintenance space in a limited space such as an air-conditioning machine room.

In addition, the assembling step may include disposing a rod-shaped member on the air path in the ready-made air conditioner, and assembling the air-conditioning component to the ready-made air conditioner through the rod-shaped member to integrate the air conditioning component. . With such a construction method, the sensor can be supported by the rod-shaped member, and installation and renewal of various sensors are facilitated.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to aim at reduction of the work man-hour which construction of an air conditioner requires, and improvement of maintainability.

FIG. 1 is a perspective view from the upper right side illustrating the common chamber. FIG. 2 is a perspective view of the common chamber of FIG. 1 as viewed from the upper left. FIG. 3 is a perspective view illustrating the configuration of the sliding flange of the shared chamber. FIG. 4 is a partial cross-sectional view of the common chamber taken along line AA of FIG. 2 before and after construction. FIG. 5 is a diagram illustrating an example of construction 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 with shared chambers attached. FIG. 7 is a modification of a plan view and a side view of an AHU with shared chambers attached. FIG. 8 is a modification of a plan view and a side view of an AHU with a shared chamber. FIG. 9 is a diagram for explaining the man-hour reduction effect when using the shared chamber according to the embodiment. 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 door. FIG. 13 is a diagram for explaining the man-hour reduction effect when the FCU according to the embodiment is used. FIG. 14 is a diagram comparing installation positions of air conditioning components according to the comparative example and the embodiment. FIG. 15 is a diagram illustrating the assembly of air conditioning components to the hybrid air conditioner. FIG. 16 is a diagram illustrating a construction process of a hybrid air conditioner. FIG. 17 is a diagram for explaining the man-hour reduction effect when using a hybrid air conditioner. FIG. 18 is a diagram for explaining the cost reduction effect when using a hybrid air conditioner.

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

2. Description of the Related Art In air-conditioning equipment for large-scale facilities, air-conditioning equipment for adjusting the temperature and humidity of air, such as an AHU, is installed in a dedicated machine room or the like. The AHU takes in outside air into the cabin through the air-conditioning duct, and blows air whose temperature has been adjusted. In addition, the AHU supplies hot and cold water to an air conditioner installed in each room, such as an FCU. The FCU incorporates a heat exchanger, a blower, an air filter, etc., and can adjust the temperature of each room by controlling the flow rate of hot and cold water supplied from the AHU.

A box-shaped chamber is connected on the air path between the air conditioning equipment such as AHU or FCU and the air conditioning duct for the purpose of absorbing noise and mixing or branching the air. In addition, various sensors for measuring the temperature and humidity of the air circulating in the air conditioning equipment, chambers, and air conditioning ducts, and air conditioning components such as VAV devices for adjusting the air flow for air supply are installed on the air path. be done.

In the present embodiment, air conditioning components such as a chamber and various sensors are assembled and integrated with the ready-made air conditioning equipment before installing the ready-made air conditioning equipment at the installation site in the construction of the air conditioning equipment. When the air conditioner is connected to a plurality of air conditioning ducts, each air conditioning duct is connected to a plurality of chambers. In this embodiment, by partitioning the interior 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 component with the air conditioner and then installing the air conditioner at the installation site, the number of man-hours required for connecting or installing the air conditioning component after installing the air conditioner can be reduced. In addition, by pre-assembling the air-conditioning parts to the ready-made air-conditioning equipment, work in a limited space or work at a high place can be reduced, and work efficiency and safety are improved.

<Common chamber>
FIG. 1 is a perspective view from the upper right side illustrating the common chamber. 2 is a perspective view of the shared chamber of FIG. 1 as seen from the upper left side. The shared chamber 20 is a housing having openings 21a to 21d (hereinafter also collectively referred to as openings 21) connected to an air conditioning duct (not shown) serving as an air circulation path between the AHU and the outside of the AHU. is the body. A common chamber 20 is placed on top of the AHU. The upper surface of the AHU has an air supply port for supplying air to the inside, 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 outside the building. is provided. The common chamber 20 has a communication port 22a to a communication port 22d (hereinafter also collectively referred to as the communication port 22) that communicate with an air supply port, an external 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 interior of the shared chamber 20 is partitioned into spaces S1 and S3 by separators 23a and 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 separated from the space S1 and the space S3 by separators 23a and 23b, respectively. Further, the space S2 is partitioned by a separator (not shown) into a path for circulating outside air flowing in from the opening 21b to the communication port 22b and a path for circulating return air flowing in and out from 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. The shared chamber 20 forms separate air paths for supply air, outside air, return air, and exhaust air by partitioning the inside. The number of parts can be reduced and construction can be rationalized by partitioning the inside of one housing to form a common chamber 20 without providing separate chambers for supply air, outside air, return air, and exhaust air. becomes.

The shape of the housing that forms 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 separators 23a and 23b are not limited to the examples in FIGS. It can be changed as appropriate according to the model or installation location. Further, the shared chamber 20 is provided with a connecting member and a pressing frame for connecting to the air conditioning duct at each of the openings 21a to 21d, as shown in FIG.

FIG. 3 is a perspective view illustrating the configuration of the sliding flange of the 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 connection surface of the air conditioning duct, and is connected to the air conditioning duct via a connecting member 25 and a pressing frame 26 .

The connecting member 25 has a vent hole 251 and a flange 252 . The ventilation hole 251 forms an air path through which the air flowing into the air conditioning duct or the air taken in from the air conditioning duct circulates. The vent hole 251 is not limited to a tubular shape with a rectangular cross section as shown in FIG. The tubular member in FIG. 3 may be cylindrical, for example, 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 on the connection 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 within a range where the air hole 251 overlaps with the opening 21 provided in the connecting surface of the air conditioning duct. The position of the air conditioning duct may deviate from the opening 21 during construction on site. Therefore, the connecting member 25 can be slid to a position where it can be connected to the air-conditioning duct and fixed by the holding frame 26, thereby eliminating the deviation.

The holding 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 space between the air conditioning duct and the opening 21 so that the air flowing in and out of the opening 21 does not 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 common chamber taken along line AA of FIG. 2 before and after construction. The drawing on the left side of FIG. 4 is a partial cross-sectional view of the common chamber 20 before construction. 4 is a partial cross-sectional view of the common chamber 20 after construction. First, the flange 252 of the connecting member 25 is brought into contact with the connection surface of the housing 24 with the air conditioning duct 30 . Next, the pressing frame 26 inserts the connecting member 25 into the insertion hole 261 and presses the flange 252 . The connection 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 where the connecting member 25 is fixed, the holding frame 26 is fixed to the housing 24 with, for example, bolts 28 while holding the flange 252 . In the example of FIG. 4, packings 27a and 27b are attached to the outer edge of the holding frame 26. As shown in FIG. The packing 27 a seals between the flange 252 of the connecting member 25 and the pressing frame 26 . The packing 27b seals between the connection surface of the housing 24 with the air conditioning duct 30 and the pressing frame 26 .

FIG. 5 is a diagram illustrating an example of construction for adjusting the connection between the shared chamber and the air conditioning duct. In FIG. 5, the same components as those in FIG. 4 are denoted by the same reference numerals, and descriptions thereof are omitted. Moreover, in FIG. 5, illustration of the packing 27a and the packing 27b is omitted.

5 shows that the central axis X1 of the cylindrical portion of the connecting member 25 and the central axis X2 of the cross section of the air conditioning duct 30 connected to the common chamber 20 are deviated. 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. In FIG. The flange 252 of the connecting member 25 is slidable on the connection surface of the housing 24 with the air conditioning duct 30 . Also, the connecting member 25 is movable within the range of the insertion hole 261 of the holding frame 26 . In order to adjust the interface between the common chamber 20 and the air conditioning duct 30, the connecting member 25 is slid in the direction of the arrow Y in the left view of FIG. As shown in the diagram 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 . Thus, even if the central axis X1 of the tubular portion of the connecting member 25 (that is, the axis passing through the center of the opening of the common chamber 20) is deviated from the central axis X2 of the cross section of the air conditioning duct 30, , it is possible to connect the common chamber 20 and the air conditioning duct 30 by adjusting the connection during construction at the site.

<Installation of shared chamber>
FIG. 6 is an example of a plan view and a side view of an AHU with shared chambers attached. A plan view is shown on the upper side of FIG. 6, and a side view is shown on the lower side. Common chamber 20 is mounted on top of AHU 10 . An upper surface of the AHU 10 is provided with an air supply port 11a, an outside air port 11b, a return air/return air exhaust port 11c, and an exhaust port 11d (hereinafter also collectively referred to as an air control port 11). The return air/return air exhaust port 11 c may be divided into a return air port and a return air exhaust port according to the position of the separator 23 in the common chamber 20 . The common chamber 20 (casing 24) has communication ports 22a to 22d corresponding to the air control ports 11, respectively. The interior of the common chamber 20 is partitioned by separators 23 so that supply air, outside air, return air, and exhaust air flow through separate paths. The return air path in the shared chamber 20 may be further partitioned into a path for inflow of return air and a path for outflow of return air by a separator (not shown). The common chamber 20 may be manufactured by partitioning with the separator 23, or may be manufactured by combining and integrating a plurality of chambers. The air conditioning duct 30a for air supply is connected to the opening 21a of the housing 24, and blows the air supplied from the air supply port 11a of the AHU 10 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 AHU 10. As shown in FIG. 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 sent 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 air (not shown), and the exhaust air discharged from the air outlet 11d of the AHU 10 is discharged to the outside.

Each opening 21 is connected to a corresponding air conditioning duct via a connecting member 25 and a pressing 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 . For this reason, conventionally, the chamber was manufactured after measuring the dimensions of the connection between the air conditioning duct and the chamber. 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 are connected to individual chambers suspended from the ceiling. In the present embodiment, the common chamber 20 is mounted on the AHU 10 by integrating the individual chambers and partitioning the interior according to the positions of the communication ports 22a to 22d communicating with the air supply ports 11a and the like. Therefore, the number of man-hours required for construction is reduced, and construction is rationalized.

FIG. 7 is a modification of a plan view and a side view of an AHU with shared chambers 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 includes a chamber installed between an air supply port 11a and an air supply air conditioning duct 30 (not shown), an outside air port 11b, a return air/return air exhaust port 11c, and an exhaust port. 11d is divided into two chambers. In addition, the inside of the chamber installed between the outside air port 11b, the return air/return air exhaust port 11c, and the exhaust port 11d is separated from each other by the separator 23 shown in FIG. are partitioned to circulate. The opening 21d is connected to an air conditioning duct 30d for exhaust. Other components are the same as those in FIG. 6 except that the arrangement is different, so the same numbers are assigned and descriptions thereof are omitted.

FIG. 8 is a modification of a plan view and a side view of an AHU with a shared chamber. 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 supply air conditioning duct 30 (not shown), an outside air port 11b, return air, and return air. It is divided into two chambers, one chamber installed between the exhaust port 11c and the exhaust port 11d. The inside of the chamber installed between the outside air port 11b, the return air/return air exhaust port 11c, and the exhaust port 11d is separated from the outside air, the return air, the return air exhaust, and the exhaust by the separator 23 shown in FIG. 8, for example. Each is partitioned so that it circulates through an individual route. 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 an air conditioning duct 30d for return air.

The common chamber 20 shown in FIGS. 7 and 8 can be attached to the upper surface of the AHU 10 by integrating a part of the chamber. , the number of man-hours required for construction is reduced. The interior of the common chamber 20 is not limited to the cases illustrated in FIGS. good. Also, the shared chamber 20 may be manufactured by integrating a plurality of chambers through which supply air, outside air, return air, and exhaust air respectively flow.

FIG. 9 is a diagram for explaining the man-hour reduction effect when using the shared chamber according to the embodiment. First, the construction flow by the conventional construction of AHU10 is demonstrated. In conventional construction, each air terminal 11, such as the air inlet 11a of the AHU 10, is connected to a separate chamber suspended from the ceiling. In the framework construction, inserts for installing chambers are driven (A01). In duct work, each chamber is suspended from the ceiling first (A02). After that, the AHU 10 is carried in and installed (A03). Each chamber is installed in connection with each air control port 11 such as the air supply port 11a of the AHU 10, and the dimensions of the air conditioning duct are measured (A04). Air conditioning ducts connected to chambers installed in AHU 10 are fabricated according to the dimensioned connections (A05). The remaining unconstructed air conditioning ducts are connected (A06). Insulation work is carried out to install heat insulating material for the connecting portion of the air conditioning duct (A07).

Next, the construction flow when using the shared chamber 20 according to the embodiment will be described. The shared chamber 20 is installed on the AHU 10 instead of hanging from the ceiling, and is brought in and installed together with the AHU 10 (A11). That is, the steps A01, A02, A04, and A05 in the conventional construction are not required, and are reduced to one step of carrying in and installing (A11) the AHU 10 in which the common chamber 20 is installed. The work to connect the remaining air-conditioning ducts (A12) and the heat insulation work (A13) for connecting the air-conditioning ducts are the same as the steps of A06 and A07, respectively, of the conventional construction.

Furthermore, effects expected when using the shared chamber 20 according to the embodiment will be described. When the shared chamber 20 according to the embodiment is used, the number of processes is reduced, and the number of steps and the number of days are reduced. For example, the man-hours for installing one AHU 10 are reduced by about 46%. When two AHUs 10 are installed on each floor on 22 floors, approximately 46% of the man-hours for 2 units/floor×22 floors=44 units will be reduced. Also, the number of days required to install two AHUs 10 on one floor is reduced from eight days to three days, shortening the construction period by five days, which corresponds to about 62% per floor. If two AHUs 10 are installed on each of the 22 floors, it is expected that the number of days will be reduced by 5 days/floor×22 floors=110 days (about 3.5 months).

By using the shared chamber to construct the air conditioning equipment, the number of man-hours is reduced as compared with the case of installing individual chambers for each air conditioning duct connected to the air conditioning equipment. In addition, when the individual chambers are installed after the air conditioning equipment is installed, the working space is limited, and the working efficiency is lowered. By assembling the common chamber to the air conditioner before installation of the air conditioner, the time required for assembly to the air conditioner can be shortened. Furthermore, in the shared chamber, air paths are separated for each air conditioning duct, so air can circulate 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 has 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 air or return air. The heat exchanger 42 houses a cold water coil and a hot water coil through which hot and cold water supplied from the AHU 10 flow inside the housing. A cold water coil is connected to a water outlet 421 and a water inlet 422, and circulates cold water to and from the AHU 10 during cooling. A hot water coil is connected to a hot water outlet 423 and a hot water inlet 424 to circulate hot water to and from the AHU 10 during heating. The fan unit 43 internally includes a fan motor (not shown). The air blown by the fan motor is temperature-controlled by the cold water coil or 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 condensation generated in the heat exchanger 42 . The drain pan 44 can be opened with one side fixed to the bottom side of the housing of the heat exchanger 42 by a hinge or the like during maintenance by an operator. A worker 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 has a drain port 441 for draining accumulated dew condensation on the side opposite to the position where it is attached to the housing by the hinge. Condensation stored in the drain pan 44 during operation of the FCU 40 flows toward the drain port 441 and is drained from the drain port 441 when the drain pan 44 is opened.

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

FIG. 12 is a diagram illustrating the positional relationship between the FCU and the inspection door. FIG. 12 shows a top view of the FCU, and the same components as in FIG. 10 are denoted by the same reference numerals, and descriptions thereof are omitted. 12, the fan unit 43 has a fan motor 431 inside. FIG. 12 shows how the FCU 40 is installed in the ceiling space, and an inspection opening 50 is provided in the ceiling as an entrance for maintenance of the FCU 40 . Construction and maintenance of the FCU 40 are performed through an inspection opening 50 provided in the ceiling. Since the space in the ceiling is limited, maintenance such as cleaning is performed by opening and closing the drain pan 44 assembled to the FCU 40 without removing the drain pan 44 from the FCU 40, thereby improving workability from the inspection opening 50. .

FIG. 13 is a diagram for explaining the man-hour reduction effect when the FCU according to the embodiment is used. First, the construction flow by conventional construction of the FCU 40 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 framework construction, inserts for installing chambers are driven (B01). The FCU 40 and chamber box 41 are carried in separately (B02). Chamber box 41 is supported by an insert and assembled to FCU 40 (B03). Thermal insulation work is carried out on the assembly portion (B04). The FCU 40 is hung (B05), a temporary filter for trial operation is attached, and it is confirmed whether a space for maintenance can be secured (B06).
After the trial run, the temporary filter is removed (B07).

Next, the construction flow when 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 installed with a temporary filter. That is, each work from B01 to B04 for assembling the chamber box 41 after carrying in the FCU 40 becomes unnecessary, and the process is reduced to one process 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 construction step B06 is omitted. When the FCU 40 is suspended (B12), a test run is performed. After the test run, the temporary filter is removed (B13), similar to the process of B07 in conventional construction.

Furthermore, effects expected 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 processes is reduced, and the number of man-hours and the number of days are reduced. For example, the man-hours for installing 30 FCUs 40 are reduced by about 59%. Also, the number of days required to install 30 FCUs 40 will be reduced from 7.2 days to 3.2 days, and it is expected that the construction period of 4 days, which corresponds to approximately 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 assembled to the air conditioning equipment, the work required for construction is less than when installing the air conditioning parts after installing the air conditioning equipment. Man-hours are reduced. In addition, safety is ensured because work at height is reduced. Furthermore, the drain pan 44 is attached to be openable and closable via a hinge, which improves work efficiency when performing maintenance work such as cleaning and draining condensation from the ceiling inspection opening.

<Hybrid air conditioner>
Renewal work of air conditioning equipment in large facilities is required to be carried out in a short period of time. Conventionally, air-conditioning components such as various sensors and VAV devices are assembled to the installed air-conditioning equipment after the air-conditioning equipment 10 is installed. Wiring work for air conditioning components requires processing of electric pipes and cable racks. In addition, it may take time to assemble the air conditioning parts to the installed air conditioner because the work is done in a limited space. Furthermore, since the air-conditioning parts are installed above the air-conditioning equipment 10, it may take time to install the scaffolding. Therefore, in the present embodiment, air-conditioning components such as various sensors are assembled to the air-conditioning equipment 10 before the air-conditioning equipment 10 is installed. The air-conditioning equipment 10 pre-assembled with air-conditioning components is hereinafter also referred to as a hybrid air-conditioner.

FIG. 14 is a diagram comparing installation positions of air conditioning components according to the comparative example and the embodiment. The diagram on the left side of FIG. 14 illustrates the installation positions of conventional air conditioning components. Air conditioning components such as the dew point temperature sensor 61, the temperature and humidity sensor 62, the CO ₂ concentration meter 63, the VAV device 64, etc. are installed outside the air conditioning equipment 10 after the air conditioning equipment 10 is installed. Wiring work in a limited space is inefficient, and the length of the wiring cable used is longer than in the case of installation inside the machine.

On the other hand, the diagram on the right side of FIG. 14 illustrates the installation positions of the air conditioning components in this 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 inside the hybrid air conditioner 10A. Since the hybrid air conditioner 10A is installed in an air conditioning machine room or the like after the air conditioning parts are assembled, the number of work steps is reduced compared to the case where the air conditioning parts are assembled after installation.

FIG. 15 is a diagram illustrating the assembly of air conditioning components to the 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 inside the hybrid air conditioner 10A before the hybrid air conditioner 10A is installed in an 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 attached to a short pipe 65 for sensor attachment.

The various sensors are sensors for measuring the state of the air flowing inside the machine, and are installed on the air paths inside the machine. Also, the VAV device 64 is a device for adjusting the cooling/heating capacity by changing the amount of blown air, and may be installed on the air path inside the machine. The sensor attachment short pipe 65 is an example of a "rod-like 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 for updating air conditioning equipment in an existing facility. A portion surrounded by a dotted line is a process that is unnecessary 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 pre-assembled inside the machine, after installation of the hybrid air conditioner 10A, the time required for instrumentation work for installing various air conditioning parts outside the machine is shortened. By shortening the time for instrumentation work, other work such as duct work, piping work, heat insulation work, etc. can be started later than the conventional 6:30. Therefore, early morning construction work is no longer necessary, and extra labor costs for overtime due to early arrival are reduced.

In addition, since instrumentation work such as pre-processing of electrical pipes, installation of racks and pipes, installation of various devices, and wiring connections is not required, insulation of duct pipes and wiring inside the panel, which had been carried out after these instrumentation work, can be eliminated. , can be implemented front-loaded. In addition, by reducing the number of man-hours required for various instrumentation work, construction can be completed on time, and extra labor costs for overtime due to early work and overtime are reduced. In addition, the complexity of work between different industries responsible for each construction work will be reduced, safety and quality control will become easier, and each construction work will be made more efficient.

FIG. 17 is a diagram for explaining the man-hour reduction effect when using a hybrid air conditioner. In the example of FIG. 17, when the hybrid air conditioner 10A is adopted, the man-hours required for each work are calculated by setting the man-hours required for the work of installing the temperature and humidity, the stall temperature, and the CO ₂ sensor (process (1)) to 1. be. In the case of conventional construction, installation of temperature and humidity, stall temperature, and CO ₂ sensors (process (1)), wiring, piping, and wiring for outside air VAV (process (2)), and external wiring, piping, and rack mounting (process ( The man-hours required for the work of 4)) are assumed to be 2, 2, and 8, respectively. The man-hours are assumed to be 0 because there is no need for on-board wiring/support hardware installation (process (3)) or VAV and other duct material installation (process (5)) to assemble air-conditioning parts inside the machine. It's becoming In the case of conventional construction, the total number of man-hours is 12.

When the hybrid air conditioner 10A is adopted, the number of man-hours required for the work of the process (1), the process (2), and the process (4) is assumed to be 1, 1, and 2, respectively. In the 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 steps (1), (2), and (4) is work at height and requires work in an unstable posture. On the other hand, in the hybrid air conditioner 10A, since various air conditioning parts are assembled inside the machine before installation, workability is improved as compared with conventional construction. In addition, since some work such as rack mounting is not required, when the hybrid air conditioner 10A is adopted, the number of man-hours related to the work of steps (1), (2), and (4) is reduced. Since the number of man-hours required for the work of steps (3) and (5) performed to assemble various air conditioning parts in the machine is assumed to be 1 each, when the hybrid air conditioner 10A is adopted, the total number of man-hours is becomes 6. That is, in the example shown in FIG. 17, when the hybrid air conditioner 10A is employed, the man-hours are expected to be reduced by about 50% compared to the conventional construction.

FIG. 18 is a diagram for explaining the cost reduction effect when using a hybrid air conditioner. FIG. 18 shows the cost reduction effect for the steps (1) to (5) shown in FIG. In the example of FIG. 18, when the hybrid air conditioner 10A is adopted, the cost required for each task is calculated assuming that the cost required for the process (2) is 100. In the case of conventional construction, the costs for the work in process (1), process (2) and 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 employed, the costs for process (1), process (2), and process (4) are assumed to be 300, 100, and 100, respectively. When the hybrid air conditioner 10A is adopted, the workability is improved and some of the members used for the external wiring are not required, so the cost of steps (1), (2) and (4) is reduced. Since the cost of process (3) and process (5) performed to assemble various air conditioning parts in the machine is assumed to be 100 and 200, respectively, if the hybrid air conditioner 10A is adopted, the total cost is 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% compared to the conventional construction.

By assembling various sensors and the like before installing the air conditioner 10, wiring cables arranged when installing various sensors and the like outside the air conditioner 10 and cable racks for accommodating the wiring cables are It becomes unnecessary, and reduction of work man-hours and costs can be achieved. In addition, since various air-conditioning parts are assembled inside the machine, wiring outside the machine is reduced, making it easier to secure maintenance space in a limited space such as an air-conditioning machine room.

10 Air conditioner, 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 Mouth: 20 Common chambers: 21, 21a, 21b, 21c, 21d Openings: 22, 22a, 22b, 22c, 22d Communication ports: 23, 23a, 23b Separator: 24 Housing : 25... Connecting member: 251... Vent hole: 252... Flange: 26... Holding 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 and humidity sensor: 63 CO ₂ densitometer: 64 VAV device: 65 Sensor mounting short pipe

Claims (8)

A construction method for installing an air conditioner having an air intake port and an air supply port for adjusting the temperature of the air passing through the machine,
a manufacturing step of arranging, in the interior of the air conditioner, members for assembling the air conditioning parts arranged on the air path in the interior of the air conditioner, into the interior of the air conditioner;
an assembling step of assembling and integrating an air-conditioning component arranged on an air path of the air-conditioning equipment, the air-conditioning component including a chamber for taking in air and a chamber for supplying air to the air-conditioning equipment; In the assembling step, the chamber for taking in air is placed on the air conditioner and installed at the opening for taking in the air, and the chamber for supplying air is placed on the air conditioner and the air is at an air supply port, integrating the air intake chamber and the air supply chamber with the air conditioning equipment, and the state of the air passing through the air path via the member A sensor for measuring is mounted on the air path in the air conditioning equipment as the air conditioning component, or an air volume control device for controlling the air volume passing through the air path is used as the air conditioning component in the interior of the air conditioning equipment an assembling step including a step of assembling on the air path;
a carrying-in step of carrying the air conditioner integrated with the chamber for taking in the air and the chamber for supplying the air to an installation site;
The air conditioner integrated with the chamber for taking in the air and the chamber for supplying the air carried in in the carrying-in step and the air conditioner outside the machine are combined with the air integrated with the air conditioner. connecting through an intake chamber and an air supply chamber;
Construction method. A construction method for installing an air conditioner having an air intake port and an air supply port for adjusting the temperature of the air passing through the machine,
a manufacturing step of arranging, in the interior of the air conditioner, members for assembling the air conditioning parts arranged on the air path in the interior of the air conditioner, into the interior of the air conditioner;
an assembling step of assembling and integrating an air-conditioning component arranged on an air path of the air-conditioning equipment, the air-conditioning component including a chamber for taking in air and a chamber for supplying air to the air-conditioning equipment; In the assembling step, the chamber for taking in air is placed on the air conditioner and installed at the opening for taking in the air, and the chamber for supplying air is placed on the air conditioner and the air is at an air supply port, integrating the air intake chamber and the air supply chamber with the air conditioning equipment, and the state of the air passing through the air path via the member A sensor for measuring is mounted on the air path in the air conditioning equipment as the air conditioning component, or an air volume control device for controlling the air volume passing through the air path is used as the air conditioning component in the interior of the air conditioning equipment an assembling step including a step of assembling on the air path;
an installation step of installing the air conditioner integrated with the chamber for taking in the air and the chamber for supplying the air at an installation location;
The air conditioner installed in the installation step, in which the chamber for taking in the air and the chamber for supplying the air are integrated, and the air conditioner outside the aircraft are installed, and the air integrated with the air conditioner is installed. connecting through an intake chamber and an air supply chamber;
Construction method. A construction method for installing an air conditioner that has an air intake port and an air supply port and adjusts the temperature of the air passing through the machine,
a manufacturing step of arranging, in the interior of the air conditioner, members for assembling the air conditioning parts arranged on the air path in the interior of the air conditioner, into the interior of the air conditioner;
An assembling step of assembling and integrating an air-conditioning component arranged on an air path of the air-conditioning equipment, the air-conditioning component including a chamber for taking in air and a chamber for supplying air to the air-conditioning equipment. The assembling step includes placing the chamber for taking in the air on the air conditioner and installing it at the opening for taking in the air, placing the chamber for supplying the air on the air conditioner and supplying the air. A step of installing the chamber for taking in the air and the chamber for supplying the air by installing them at the air supply port and integrating them with the air conditioning equipment respectively; a step of assembling a sensor to be measured as the air conditioning component onto an air path inside the air conditioning equipment; an assembling step including a step of assembling on the air path;
an installation step of installing the air conditioner integrated with the chamber for taking in the air and the chamber for supplying the air at an installation location;
The air conditioner installed in the installation step, in which the chamber for taking in the air and the chamber for supplying the air are integrated, and the air conditioner outside the aircraft are installed, and the air integrated with the air conditioner is installed. connecting through an intake chamber and an air supply chamber;
Construction method. In the manufacturing step, the member is a rod-shaped member arranged on the air path in the air conditioner, and the rod-shaped member is arranged inside the air conditioner;
In the assembling step, the air conditioning component is integrated with the air conditioner by assembling it via the rod-like member.
The construction method according to any one of claims 1 to 3 . The installation step is a step of installing the air conditioner on the ceiling.
The construction method according to claim 2 or 3 . The assembling step measures the state of air passing through the air path.
A dew point temperature sensor as the sensor, and as the air conditioning component,
including a step of assembling onto an air path inside the air conditioner,
The construction method according to any one of claims 1 to 5. The assembling step measures the state of air passing through the air path.
A temperature and humidity sensor as a sensor, and as the air conditioning component,
including a step of assembling onto an air path inside the air conditioner,
The construction method according to any one of claims 1 to 5. The assembling step measures the state of air passing through the air path.
CO as a sensor ₂ a sensor as the air conditioning component,
including a step of assembling onto an air path inside the air conditioner,
The construction method according to any one of claims 1 to 5.

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