Air conditioning system

Abstract

To provide an air conditioning unit capable of efficiently mixing temperature-controlled air blown out from an air conditioner and non-temperature-controlled air bypassing the air conditioner.SOLUTION: An air conditioning system conditions a plurality of rooms in a house by blowing conditioned air generated in an air conditioning unit 3 through a blower 17 and a duct. The air conditioning unit 3 includes an air conditioner 10 and a blower 17. An intake louver 50 is provided on a lateral side of the air conditioner 10. A partition plate 36 is provided below the intake louver 50 between the air conditioner 10 and the blower 17. A conditioned air flow 49, which is a combination of an air conditioner blowout air flow 45 and a bypass air flow 47, is passed through a partition plate opening 43 to the blower 17.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an air conditioning system that is installed inside a building and air-conditions a plurality of rooms in the building using an air conditioner and a plurality of fans. [Background technology]

[0002] BACKGROUND ART Conventionally, this type of air conditioning system is known to adjust the temperature of drawn air by an air conditioner and then send the air to a plurality of rooms by a blower (see, for example, Patent Document 1). A conventional air conditioning system will be described below with reference to FIGS. 11 and 12, air conditioning unit 501 includes box-shaped housing 503 having air inlet 502a, and the interior of box-shaped housing 503 is divided by partition plate 510 into a chamber room 502 on the front side and a duct arrangement room 508 on the rear side. Air conditioner main body 504 is installed on partition plate 510 of chamber room 502 facing air inlet 502a. Three top-side fans 505a are attached to partition plate 510 below air conditioner main body 504, and three bottom-side fans 505b are attached below top-side fans 505a on partition plate 510. Furthermore, bottom-side fans 505b are attached to the bottom side of chamber room 502 at the bottom of box-shaped housing 503. When the top fan 505a, the bottom fan 505b and the air conditioner main body 504 are operated, air outside the box-shaped housing 503 flows into the chamber 502 through the inlet 502a. Furthermore, the air inside the chamber 502 is temperature-adjusted or humidity-adjusted to cool air, warm air, or the like by the air conditioner main body 504 at the top inside the chamber 502, and is blown downward inside the chamber 502. Each top surface fan 505a and each bottom surface fan 505b installed in the center and bottom of the chamber 502 draws air from the chamber 502 through the intake section 505a, and ventilates the air through the top surface duct 507a and bottom surface duct 507b, sending it to multiple rooms. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-99087 Summary of the Invention [Problem to be solved by the invention]

[0004] In such conventional air conditioning systems, if the air volume blown to the multiple rooms by the blowers is greater than the air volume blown out by the air conditioners, some of the air drawn into the chamber 502 by the blowers is drawn into the air conditioners, while the remaining air bypasses the air conditioners and flows through the chamber 502. Furthermore, depending on the position of the opening through which air is drawn into the chamber 502, some of the air may bypass the air conditioners and flow through the chamber 502. If the temperature-adjusted air blown out from the air conditioners in the chamber 502 and the unadjusted air that bypasses the air conditioners are drawn into the multiple blowers without being mixed in the chamber 502, the temperatures of the air blown out from the air conditioners will differ depending on the room, resulting in temperature differences between the multiple rooms and insufficient air conditioning in some rooms. Therefore, it has been necessary to mix the temperature-adjusted air blown out from the air conditioners and the unadjusted air that bypasses the air conditioners before they reach the multiple blowers, so that air with no temperature difference can be blown into each room. Furthermore, since air inlet 502a is installed opposite air conditioner main body 504 installed on partition plate 510 of chamber 502, in order for air outside box-shaped casing 503 to flow into chamber 502 from inlet 502a, there must be an open space in front of inlet 502a that is connected to each room, such as a corridor, staircase hall, or entrance hall, where the air that has been conditioned in each room returns, and air conditioning unit 501 must be installed in a space where inlet 502a that is equal to or greater than the width of air conditioner main body 504 can be installed. In other words, the front of air conditioning unit 501 in the longitudinal direction must be an open space, which places a significant constraint on determining the floor plan of the house. 13 is a cross-sectional view showing an example in which the above-mentioned air conditioning unit 501 is installed on the second floor 510 of a two-story detached house. Specifically, the air conditioning unit 501 is installed so that the air inlet 502a contacts the staircase hall 512 of the staircase 511 and enters a room 515. In this way, the rear or side of the air conditioning unit 501 is in contact with the exterior wall of the building. And, in front of the air conditioning unit 501 is a stair hall 512. Therefore, if the rear or side of air conditioning unit 501 is installed adjacent to an atrium, corridor, entrance hall, etc., the distance between air outlets 518, 519, 520 to each room 515, 516, 517 and air outlet 521 on the first floor (not shown) will be long, and each duct will be long. Longer ducts result in greater pressure loss and make the ducts difficult to install. For this reason, it is best to avoid installing air conditioning unit 501 in such locations as much as possible. Furthermore, if air conditioning unit 501 is installed with its rear facing the interior of the building and with air inlet 502a on the front side of air conditioning unit 501 facing stairwell 512, or in contact with an atrium, hallway, entrance hall, or the like, for example, if air conditioning unit 501 is installed so that it extends into room 516, the front side of air conditioning unit 501 will have a large surface area in contact with stairwell 512. As a result, the area of ​​room 516 that is in contact with stairwell 512 becomes small, making it difficult to provide door 525 or storage space there. This is not a problem in a large detached house, but in a small detached house or apartment, it may be difficult to arrange rooms in a rational layout. Furthermore, ducts must be laid inside the house to transport conditioned air from the air conditioning unit 501 to each room. However, if the building's insulation and airtightness are poor and the ducts are long or have many bends, pressure loss can reduce the volume of conditioned air passing through the ducts, and if there is a large difference in temperature between the conditioned air and the temperature around the duct, condensation can occur or the ducts can become insufficient. Furthermore, because space is required to lay the ducts, it can be difficult to lay long ducts in small houses or apartments.

[0005] The present invention solves these conventional problems and aims to provide an air conditioning system that can effectively mix temperature-adjusted air blown out from an air conditioner with unadjusted temperature-adjusted air that bypasses the air conditioner. Another object of the present invention is to provide an air conditioning system that can provide a rational layout of rooms, etc., even in small detached houses or apartment buildings, by installing an air conditioning unit in an empty space where it is difficult to use the unit. Another object of the present invention is to provide an air conditioning system that can reduce duct space and exert its air conditioning capacity by routing ducts around the house in the shortest possible way, even in small detached houses or apartment buildings. [Means for solving the problem]

[0006] In order to achieve the above object, the air conditioning system of the present invention comprises: an air outlet provided in a room in a building; an air conditioning system including an air conditioner and a plurality of blowers within an air conditioning unit, the blowers and the air outlets connected by air conditioning air ducts, the air conditioning unit producing conditioned air, the conditioned air flowing from the air conditioning unit to the air outlets and returning as a return airflow from the room in which the air outlets are provided to the air conditioning unit as a circulation path, the air conditioning unit being box-shaped with a front wall at the front, a rear wall at the rear, right and left walls at the sides, a top plate at the top, and a bottom plate at the bottom, the air conditioning unit being provided with a partition plate dividing the air conditioning unit into an air conditioner space in which the air conditioners are disposed and a blower space in which the blowers are disposed, and an air inlet for taking in the return airflow into the air conditioning space of the air conditioning unit, the right wall or the left wall at the side of the air conditioner, The partition plate is provided on a wall below the lower end of the air inlet and is provided so as to be in contact with the right wall or the left wall on which the air inlet is provided, the width of the partition plate is set to the width of the left and right blowing areas formed when the air conditioner is operating, a partition plate opening is formed between the end of the partition plate and the left wall or the right wall on which the air inlet is not provided, the area of ​​the air inlet is set to be equal to or greater than the area of ​​the partition plate opening, the return airflow returning from the air inlet is separated into an air conditioner suction airflow and a bypass airflow, the blown airflow blown out by the air conditioner that has sucked in the air conditioner suction airflow and the bypass airflow mix and merge by the partition plate and the partition plate opening to become the conditioned air that is sucked into the blower. With this means, the bypass airflow and the blown airflow blown out by the air conditioner that has sucked in the air conditioner suction airflow are mixed and merged by the partition plate and the partition plate opening to become conditioned air, which is then sucked into the blower, so that the air quality, such as the temperature of the suction air for each blower, becomes uniform, and conditioned air with little temperature difference and uniform air quality can be blown into each room. Furthermore, because the air inlet is located on the right or left wall of the air conditioning unit next to the air conditioner, the air conditioning unit can be positioned so that the short side wall of the box-shaped air conditioning unit is in contact with open spaces connected to each room, such as a corridor, staircase hall, or entrance hall, thereby increasing the surface area of ​​the room in contact with the corridor, etc. Even in small detached houses or apartments, by installing the air conditioning unit in empty spaces that are difficult to use, it is possible to create a rational layout for the rooms, etc. In the air conditioning system of the present invention, the partition plate is detachably provided on the air conditioning unit. This means allows the size of the partition opening to be adjusted by replacing the partition at the installation site. The air conditioning system of the present invention is disposed within the building without contacting any wall surface that forms the outer periphery of the building. By this means, the air conditioning unit is brought close to a plurality of rooms in the building, and the distance between the air outlet of each room and the air conditioning unit is shortened, so that each air conditioning air duct can be shortened, the installation space of the air conditioning air duct can be reduced, the pressure loss of the air conditioning air duct can be reduced, and the workability of the air conditioning air duct can be improved. In the air conditioning system of the present invention, the air inlet is arranged facing any one of a corridor, a stairwell, an entrance hall, and an atrium that communicates with the rooms that make up the building. With this means, the air inlet of the air conditioning unit faces the corridor or the like, so that the return airflow from the room communicating with the corridor or the like can be surely sucked in from the air inlet, and the circulation path between the air conditioning unit and the room can be rationally configured. In addition, the air conditioning system of the present invention has an air outlet connected to the air conditioning air duct provided on at least one of the wall or ceiling of the room in contact with the air conditioning unit, the floor or wall of the room above the air conditioning unit, and the wall or ceiling of the room below the air conditioning unit. This means makes it possible to shorten the air conditioning air duct connecting the air conditioning unit with the air outlets of the rooms around the air conditioning unit, thereby reducing the installation space for the air conditioning air duct, reducing pressure loss in the air conditioning air duct, and improving the workability of the air conditioning air duct. In addition, the air conditioning system of the present invention is such that the building is highly airtight and highly insulated, and conditioned air is produced at a temperature within 5 K during cooling and within 10 K during heating relative to the temperature of the air surrounding the air conditioning duct. This method makes it difficult for condensation to form inside and outside the air conditioning duct, reduces the temperature gradient, and makes it easier to maintain the air conditioning capacity. In addition, the air conditioning system of the present invention does not include a heat insulating material in the air conditioning air duct. With this means, even if the air conditioning air duct has the same outer diameter, the inner diameter is larger, so pressure loss is reduced and the air volume can be increased. In addition, the air conditioning system of the present invention has the blower below the partition plate and below the partition plate opening, and the air volume of the blower below the partition plate is equal to or greater than the air volume of the blower below the partition plate opening. With this means, the air volume of the lower fan is relatively large below the partition plate where conditioned air normally does not flow easily, so conditioned air is also drawn into the lower fan, and the air quality, such as the temperature of the conditioned air drawn into the fan, tends to become more uniform. In the air conditioning system of the present invention, the air conditioning air duct is a flexible air conditioning duct having an outer skin made of resin and an inner surface lined with nonwoven fabric. This method provides the air conditioning duct with a sound-deadening effect and improves the ease of installation of the air conditioning duct. In the air conditioning system of the present invention, the air conditioning air duct is an airtight space in the building, such as between floors, under the floor, or in the attic. By this means, the spaces between floors, etc., which are naturally provided in a building, are used as air conditioning air ducts, so there is no need to provide a dedicated air conditioning air duct, no installation space is required, and workability is improved. The air conditioning system of the present invention further comprises a fan at the air outlet. This means makes it possible to increase the air volume when the pressure loss in the air conditioning air duct is large and the air volume is small. In addition, the air conditioning system of the present invention has two of the air conditioning units, and the two air conditioning units are arranged so that they share or overlap each other's rear walls, and the air inlets of each unit are provided on the same side. With this method, the air inlets of the two air conditioning units are located on the same side, so the two air conditioning units can be positioned so that the two air inlets are adjacent to open spaces connected to each room, such as a corridor, stairwell, or entrance hall.In a relatively large detached house, a commercial space such as a store, or an office space such as a hospital, two air conditioning units can be placed in a space at the very back of a difficult-to-use corridor, for example, to make efficient use of the space within the building. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide an air conditioning system that is effective in blowing conditioned air of uniform quality with little temperature difference to each room. Furthermore, even in small detached houses or apartments, by installing the air conditioning unit in an empty space where it would be difficult to use, it is possible to provide an air conditioning system that has the effect of greatly increasing the degree of freedom in design, such as by creating a rational layout for rooms. Furthermore, an air conditioning system can be provided that is effective in that it can be installed in a building and adjusted during trial operation. Furthermore, by shortening the air conditioning air duct, the installation space can be reduced, the workability of the air conditioning air duct can be improved, and the air volume can be increased, thereby providing an air conditioning system that has the effect of fully demonstrating the air conditioning capacity. In addition, since the air inlet of the air conditioning unit faces the hallway or the like, the conditioned air circulates efficiently throughout the house, providing an air conditioning system that is energy-efficient and can provide uniform air quality in each room. Furthermore, an air conditioning system can be provided that is less susceptible to condensation inside and outside the air conditioning duct, has a small temperature gradient, and is easy to maintain its air conditioning capacity. Furthermore, an air conditioning system can be provided that has a sound-absorbing effect and is easy to install. Also, the present invention provides an air conditioning system that does not require a dedicated installation space and has the effect of improving workability. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of the second floor of a building showing the configuration of an air conditioning system according to a first embodiment of the present invention. [Figure 2] Side view of the air conditioning unit of the air conditioning system [Figure 3] Front view of the air conditioning unit of the air conditioning system [Figure 4] FIG. 10 is a plan view of the second floor of a building showing the configuration of an air conditioning system according to a second embodiment of the present invention. [Figure 5] Front view of the air conditioning unit of the air conditioning system [Figure 6] FIG. 10 is a plan view of a single building showing the configuration of an air conditioning system according to a third embodiment of the present invention. [Figure 7] A cross-section of one of the buildings showing the configuration of the air conditioning system [Figure 8] FIG. 10 is a plan view of a building showing the configuration of an air conditioning system according to a fourth embodiment of the present invention. [Figure 9] Front view of air conditioning unit A of the same air conditioning system [Figure 10] Front view of air conditioning unit B of the same air conditioning system [Figure 11] Side view of the air conditioning unit in a conventional air conditioning system [Figure 12] Front view of the air conditioning unit of a conventional air conditioning system [Figure 13] Floor plan of the second floor of a building showing the configuration of a conventional air conditioning system DETAILED DESCRIPTION OF THE INVENTION

[0009] (Embodiment 1) A first embodiment of the present invention is shown in FIGS. 1 to 3. FIG. FIG. 1 is a plan view of the second floor of a building showing the configuration of an air conditioning system in embodiment 1 of the present invention, FIG. 2 is a side view of the air conditioning unit of the air conditioning system, and FIG. 3 is a front view of the air conditioning unit of the air conditioning system.

[0010] As shown in FIG. 1, the air conditioning system 1 is installed in a detached building 2, which is a highly airtight and highly insulated house, and air conditioning ducts are laid throughout the building 2 to thoroughly air-condition all the rooms and spaces within the building 2. In the first embodiment, the term "room" refers to a habitable room, and the term "space" refers to a non-habitable room. A habitable room is a room that is used continuously for living, working, working, meeting, recreation, or other similar purposes, and a non-habitable room is a room that is not. A room that is difficult to determine as a habitable room can be determined based on the actual usage.

[0011] The exterior of building 2 is tightly covered with insulation material (not shown) and airtight sheeting (not shown), the roof (not shown) is roof-insulated, the foundation (not shown) is foundation-insulated, the windows are insulated sashes (not shown) such as triple-glazed resin sashes, the doors are insulated doors (not shown), and all rooms and spaces within building 2, including the attic space (not shown) and underfloor space (not shown), are insulated spaces. Insulation methods can be broadly divided into external insulation and internal insulation, and each can be adopted depending on its advantages and disadvantages, but this applies to Building 2 that has no insulation defects in its outer shell and at least meets the insulation performance requirements of the ZEH standards. Regarding airtightness performance, although it depends on the specifications of the airtight sheet, the continuity of the airtight layer can be maintained by applying airtight tape or the like to the joints of the airtight sheet, and the target building 2 is one that meets at least a C value of 1.0.

[0012] As shown in Figure 1, the air conditioning unit 3 is installed on the second floor of the building 2. As the air conditioning unit 3 is an internal fixture of the building 2, it is restricted by the layout of the building 2 and is kept to a minimum area to ensure sufficient interior space. The air conditioning unit 3 is placed between the pillars of the building 2, so in a typical home with a floor area of ​​around 100 to 130 sq. m, it will occupy an area of ​​about one tatami mat, with a width of half a ken (910 mm) and a depth of one ken (1820 mm).

[0013] The air conditioning unit 3 is also provided with a sealed door 7 that can be opened and closed for maintenance purposes to allow access to the interior from a corridor 6 connected to a staircase hall 5 up the stairs 4 to the second floor, and that is highly airtight when closed. In this embodiment, the air conditioning unit 3 is placed facing the corridor 6, but if it is connected as an air passage to other spaces that are connected as an air passage by door undercuts or the like to the rooms from which the conditioned air is blown out, such as the staircase hall 5, entrance hall, atrium, etc., then the entire building 2 can be air-conditioned thoroughly, so it may also be placed facing the staircase hall 5, entrance hall, atrium, etc. The air conditioning unit 3 that generates the conditioned air is provided with multiple fans (not shown) and an air conditioner 10 that is connected to an air conditioning outdoor unit (not shown) installed outdoors by refrigerant piping and electrical wiring. The air conditioner 10 has a heat exchanger (not shown) and a blower (not shown), and the blower (not shown) has a fan (not shown) and a motor (not shown).

[0014] Air outlets 23, 24, and 25 are attached to the walls of rooms A20, B21, and C22 on the second floor of building 2, respectively, and air outlet 26 is attached to the ceiling of a room (not shown) on the first floor. Air outlets 23, 24, 25, and 26 are air intake grills that blow out conditioned air, and the air direction can be changed. A plurality of fans (not shown) are connected to the air outlets 23, 24, 25, 26 via air conditioning ducts 30a, 30b, 30c, 31 in a one-to-one relationship, respectively. Doors 40, 41, and 42 are provided between room A20 and room B21, and between room C22 and corridor 6, respectively, and undercuts (not shown) are provided below doors 40, 41, and 42 to return the conditioned air blown out from air outlets 23, 24, and 25 from rooms A20, B21, and C22 to corridor 6 as return air.

[0015] The air conditioning unit 3 is provided with an intake louver 50 on the right side wall 13 facing the corridor 6 of the air conditioning unit 3, above the sealed door 7. The intake louver 50 is an air inlet for introducing return air from the corridor 6, and has a removable intake filter 51 for maintenance. Although not shown in simplified form in Figure 1, there are other rooms and spaces that have air outlets, and to accommodate these, air blowing sections (not shown) are installed and connected by air conditioning ducts (not shown), and undercuts or bypass openings are provided in the rooms etc. so that the rooms etc. are connected to corridors, stairwells, entrance halls, atriums etc. as air passages, thereby air-conditioning the entire building 2 thoroughly.

[0016] As shown in FIGS. 2 and 3 , the air conditioning unit 3 is box-shaped and is surrounded by a front wall 11 at the front, a rear wall 12 at the rear, a right side wall 13 and a left side wall 14 at the sides, an upper plate 15 at the top, and a lower plate 16 at the bottom. An equipment mounting wall 18 is provided within the air conditioning unit 3, on which the air conditioner 10 and the blowers 17 are installed. The air conditioner 10 is installed at the top of the equipment mounting wall 18, and the blowers 17 are installed at the bottom of the equipment mounting wall 18. In this embodiment, five upper-stage blowers 17a, five middle-stage blowers 17b, and three lower-stage blowers 17c are arranged side by side, but the number of the blowers 17 varies depending on the size of the building 2. All of the blowers 17 have the same configuration, with a sirocco fan (not shown) mounted in a box-shaped blower housing (not shown), and a blower inlet (not shown) opening toward the interior of the air conditioning unit 3. Each fan intake (not shown) is fitted with an intake grille 52. Air conditioning ducts 30 and 31 are fitted to the fan outlets (not shown).

[0017] Air conditioning ducts 30 and 31 are arranged to send air to each room of building 2, and air conditioning ducts 30a, 30b, and 30c connected to upper-stage blower 17a are led upward from air conditioning unit 3 through duct space 53 formed between equipment mounting wall 18 and rear wall 12. Air conditioning ducts 30b and 30c pass through upper space 55 between top panel 15 and attic 54 and are connected via the shortest route to air outlets 24 and 25 attached to the walls of rooms B21 and C22 on the second floor. The air conditioning duct 30a passes through a duct space 53 and an attic space 54 and is connected via the shortest route to an air outlet 23 attached to the wall of a room A20 on the second floor. The other air conditioning ducts 30 are connected via the shortest route to air outlets (not shown) attached to the ceiling or wall of the room or space on the second floor, or to the ceiling space 54. The air conditioning ducts 31 connected to the middle-stage fan 17b and the lower-stage fan 17c are both led downward from the air conditioning unit 3, and some of the air conditioning ducts 31 are connected via the shortest route to the air outlet 26 on the ceiling of a room on the first floor (not shown) through the inter-floor space 56 between the second floor and the first floor. The other air conditioning ducts 31 are connected via the shortest route to an air outlet attached to the ceiling or wall of a room or space on the first floor, or are connected via the shortest route to an air outlet (not shown) attached to the underfloor of the first floor (not shown) or the floor of a room or space on the first floor.

[0018] In order to prevent the air conditioning duct 31 of the lower fan 17c from overlapping with the air conditioning duct 31 of the middle fan 17b, the lower fan 17c is installed inside the middle fan 17b. The air conditioning ducts 30 and 31 have an outer skin made of resin and an inner surface lined with nonwoven fabric, with a thickness of 25 mm and a density of 24 kg / m 3 The duct is flexible and has an inner diameter of 150 mm and is made of a heat insulating material such as glass wool. Duct holes (not shown) are opened in the upper plate 15 and the lower plate 16 of the air conditioning unit 3, through which the air conditioning ducts 30 and 31 fit.

[0019] Air conditioner 10 is the indoor unit of a separate-type room air conditioner, and has an air inlet 33 at the top of the body and an air outlet 34 at the bottom, with up-down airflow direction changing blades 35 and left-right airflow direction changing blades (not shown) attached to air outlet 34. The capacity of air conditioner 10 is determined based on heat load calculations that depend on factors such as the size of building 2, and it is installed above multiple fans 17 at the top of equipment mounting wall 18. The horizontal width of the multiple fan intakes (not shown) connected together is greater than the width of the air conditioner outlet 34, and for maintenance purposes, the air conditioner 10 is installed approximately 50 mm away from the right side wall 13 and close to the right side of the air conditioning unit 3. As a result, the air conditioner 10 is installed so that the horizontal center of the multiple fan intakes (not shown) and the left end face of the air conditioner 10 are approximately aligned.

[0020] Above the airtight door 7 on the right wall 13 of the air conditioning unit 3 is an intake louver 50 with an intake filter 51. In order to ensure a sufficient volume of conditioned air, intake filter 51 has the largest possible external dimensions of 850 mm x 650 mm, an opening rate of 70%, and is made of a polyester / modacrylic nonwoven fabric with a thickness of 15 mm to 30 mm. When used at a standard air speed of 1 m / s, intake filter 51 has an efficiency (gravimetric method) of 80% or more and is reusable by washing. Normally, the system is designed so that the surface wind speed of the filter is 1 m / s or less. However, in this embodiment, as will be described later, the total wind volume of the plurality of blower units 17 is about 1950 m / s. 3 / h, but because the intake louver 50 is located on the right wall 13 on the short side of the air conditioning unit 3, the area of ​​the intake filter 51 is slightly smaller, resulting in a surface wind speed of 1.4 m / s. However, at this level of wind speed, the intake louver 50 is facing the corridor 6, etc., so noise inside the air conditioning unit 3 is not a problem. Although the intake filter 51 will become clogged with dust a little more quickly and maintenance will be required a little more frequently, mixing inside the air conditioning unit 3 is promoted, making it easier to produce uniform conditioned air, which is actually advantageous for generating conditioned air. If the air speed becomes even higher and it is not possible to install an intake filter 51 on the intake louver 50, it is desirable to install filters at least on the air conditioner 10 and the blower 17, and if possible, to install a filter that can handle a large amount of air midway along the circulating air path that runs from the air conditioning unit 3 through each room, etc. and returns to the air conditioning unit 3, thereby reducing the frequency of filter maintenance.

[0021] A partition plate 36 surrounded by the right side wall 13, the equipment mounting wall 18, and the front wall 11 is provided between the air conditioner 10 and the multiple blowers 17, dividing the space into an air conditioner space 37 in which the air conditioner 10 is installed and a blower space 38 in which the blowers 17 are installed. The partition plate 36 is detachably held below the lower end of the suction louver 50 by partition plate holding members (not shown) fixed to the front wall 11 and the equipment mounting wall 18, respectively. The left end 39 of the partition plate 36 is positioned to be at the same level as or to the left of the left ends (not shown) of the left and right air outlet regions (not shown) from which the air is blown out when the air conditioner 10 is operating and the left and right air direction changing blades (not shown) are adjusted so that the air is blown out straight. A partition plate opening 43 is formed between the left end 39 of the partition plate 36 and the left side wall 14.

[0022] The outside dimensions of the partition plate opening 43 are 830 mm×560 mm, which are smaller than the outside dimensions of the suction louver 50 and the suction filter 51, 850 mm×650 mm. If the partition opening 43 is larger than the intake louver 50, as will be described later, the partition opening 43 does not become a bottleneck for the conditioned air flow 49, so turbulence is less likely to occur in the mixing section 48 above the partition, and mixing is not good, which may result in a large temperature difference in the conditioned air. Furthermore, the air speed of the intake louver 50 and intake filter 51 may become too high, which may cause problems such as a decrease in the air volume of the blower due to pressure loss and loud noise. When the air conditioner 10 is operated, an air conditioner intake airflow 44 directed toward the air conditioner intake port 33 and an air conditioner outlet airflow 45 whose direction is controlled by the up / down air direction changing blade 35 and the left / right air direction changing blade (not shown) are formed.

[0023] When the multiple fans 17 are operated, the conditioned air blown from the air conditioning unit 3 to each room or space is discharged into the corridor 6 through an undercut or bypass opening in the door of each room or space. The return air discharged into the corridor 6 becomes a return airflow 46, is sucked into the intake louver 50, and returns to the air conditioning unit 3, thereby circulating within the building 2. Since the airflow rate of the plurality of fans 17 is greater than that of the air conditioner 10, the return airflow 46 is divided into an air conditioner intake airflow 44 that is drawn into the air conditioner 10 and a bypass airflow 47 that bypasses the air conditioner 10. Then, at a mixing section 48 above the partition plate 36, the air conditioner outlet airflow 45 and the bypass airflow 47 join together to form well-mixed conditioned air, which then passes through the partition plate opening 43 as conditioned airflow 49 and is sucked into the multiple fans 17. Although the intake louver 50 is provided on the right wall 13 of the air conditioning unit 3, if the corridor 6 or the like is on the left side of the air conditioning unit 3, the intake louver 50 is provided on the left wall 14, and the air conditioner 10, partition plate 36, etc. are provided on the left side, and the partition plate opening 43, etc. are provided on the right side, so that the structure inside the air conditioning unit 3 is reversed left and right. By doing so, the same action and effect can be achieved.

[0024] In the above configuration, when the multiple fans 17 and the air conditioner 10 are operated, the temperature-adjusted conditioned air in the air conditioning unit 3 is sucked into the multiple fans 17 and blown into each room, etc., thereby air-conditioning each room, etc. The conditioned air (return air) sent to each room or the like returns to the air conditioning unit 3 through the intake louver 50 as a return airflow 46. At this time, the return airflow 46 is divided into an air conditioner intake airflow 44 and a bypass airflow 47 . The air conditioner intake airflow 47 is temperature-adjusted to become the air conditioner outlet airflow 45, and a temperature difference occurs between the air conditioner intake airflow 47 and the bypass airflow 47. The air conditioner outlet airflow 45 and the bypass airflow 47 meet at a nearly right angle in the mixing section 48 above the partition plate 36, generating turbulence, resulting in good mixing and conditioned air with little temperature difference. Then, conditioned air flow 49 passes through partition plate opening 43, which has an area smaller than the horizontal cross section of air conditioning unit 3 and equal to or smaller than the area of ​​intake louver 50. At that time, conditioned air flow 49 becomes more uniform conditioned air due to the resistance, and diffuses after passing through partition plate opening 43. Since multiple upper stage fans 17a, multiple middle stage fans 17b, and multiple lower stage fans 17c each draw in conditioned air of uniform air quality with little temperature difference and blow it to each room, etc., it is possible to blow conditioned air of uniform air quality with little temperature difference to each room, etc.

[0025] In this embodiment, the air volume of the air conditioner 10 is approximately 800 m 3 / h, the temperature of the air blown out from the air conditioner 10 is about 10K during cooling and about 20K during heating compared to the temperature of the intake air, but the total air volume of the multiple blower units 17 is about 1950 m 3 Therefore, of the return airflow 46 drawn in from the intake louver 50, the remaining approximately 1150 m 3 When the bypass airflow 47 that bypasses the air conditioner 10 at 1000 sq. m / h and the airflow 45 blown out from the air conditioner are mixed in the mixer 48, the total airflow is approximately 1950 m 3 / h of conditioned air at a temperature of about 5 K during cooling and about 10 K during heating is drawn into the plurality of blower sections 17 as conditioned air flow 49.

[0026] Mixing with bypass airflow 47 is better when air conditioner outlet airflow 45 flows in the direction of partition plate 36 with up / down air direction changing blades 35 facing downward, but even if it is facing slightly horizontally, because there is a front wall 11 of air conditioning unit 3, it will end up flowing downward along the front wall 11. Furthermore, as mentioned above, the left and right air direction changing blades (not shown) should be set straight so that the air conditioner outlet airflow 45 is directed toward the partition plate 36. If the air conditioner outlet airflow 45 faces left and passes directly through the partition plate opening 43, the temperature difference between the air conditioner outlet air and the air sucked into the blower 17 will be large. In conventional systems, where an intake louver is located above the front wall of an air conditioning unit, facing the air conditioner, no matter how many dividers are added, if the air conditioner's vertical airflow direction control blades are positioned directly below the unit, the air conditioner's airflow volume is relatively high, and the blower's airflow volume is relatively low, the air conditioner's outlet airflow and bypass airflow flow through the intake louver and the divider opening below the air conditioner as laminar flows without merging, which can lead to poor mixing and large temperature differences. However, in this air conditioning system, dividers are provided below the intake louver and the air conditioner, so the air conditioner's outlet airflow 45 and bypass airflow 47 always merge at nearly right angles. This creates turbulence, promotes mixing, and ensures the stable generation of conditioned air with uniform air quality and minimal temperature differences.

[0027] The air conditioning units 3 are created at the construction site, and as mentioned above, are constrained by the floor plan, resulting in similar volumes and equipment layouts. On the other hand, the capacity of the air conditioners 10 housed in the air conditioning units 3 is selected according to the heat load of the building 2. The size and air volume of the air conditioners 10 vary depending on the manufacturer, and the air volumes of the multiple fans vary depending on the size of the building 2, so operation adjustments are required. Operation adjustment is mainly performed by adjusting the left-right dimension of the partition plate 36, that is, the left-right dimension of the partition plate opening 43. The partition plate 36 is a detachable rectangular flat plate, and an air conditioning unit 3 is provided that allows easy on-site operation adjustment. Considering ease of adjustment, a wooden board or a hard foamed resin material is best suited for the partition board 36.

[0028] The air conditioning unit 3 is provided with an intake louver 50 on the right side wall 13 facing the corridor 6 of the air conditioning unit 3, above the sealed door 7. The intake louver 50 is an air inlet that allows return air to flow in from the corridor 6, so that return air from each room, etc. can be returned to the air conditioning unit 3 from the intake louver 50 via the corridor 6, and can also easily enter the inside of the air conditioning unit 3 when maintenance such as cleaning is required. The air conditioning unit 3 can be positioned so that the right side wall 13, which is the wall on the shorter side of the box-shaped air conditioning unit 3, faces the open space connected to each room, such as the hallway 6, staircase hall, or entrance hall, and the surface area of ​​the room facing the hallway 6 can be increased. Therefore, doors, storage, etc. can be installed on that surface, and even in a small detached house or apartment, by installing the air conditioning unit 3 in an empty space that is difficult to use and has a narrow surface area facing the hallway 6, the rooms can be arranged and laid out more rationally.

[0029] Furthermore, since the intake louver 50 is provided on the right side wall 13, which is the wall on the shorter side of the air conditioning unit 3, the air conditioning unit 3 can be installed near the center of the building 2 by inserting it into a room near the center, and as a result, the air conditioning unit 3 is close to multiple rooms, and the distance between the air outlets of each room and the air conditioning unit 3 is short. This allows each duct to be shorter, the duct installation space to be reduced, duct pressure loss to be reduced, and duct installation workability to be improved. For example, for a room adjacent to the air conditioning unit 3, an air outlet is provided on the wall between the air conditioning unit 3 and the room so that air is blown toward the room side, and a duct extends upward from the upper-stage fan 17a and connects to the air outlet. For a room on the same floor as the air conditioning unit 3 but not adjacent to it, if an air outlet is provided on the ceiling or wall, a duct similarly extends upward from the upper-stage fan 17a and passes through the attic 54 or under the ceiling (not shown) to hide the duct. Also, if an air outlet is provided on the floor, a duct extends downward from the middle-stage fan 17b, passes through the inter-floor space 56, and connects to an air outlet provided on the floor of the room. When the air conditioning unit 3 is located on the second floor, for rooms on the first floor, ducts are extended downward from the middle-stage fan 17b and the lower-stage fan 17c, passing through the inter-floor space 56 and connecting to an air outlet provided on the ceiling of the room, or the ducts are extended to the underfloor space (not shown), passing through the underfloor space (not shown) and connecting to an air outlet provided on the floor of the room.

[0030] In this way, the air conditioning unit 3 is installed near the center of the building 2, and the fans 17 are installed separately as an upper fan 17a, a middle fan 17b, and a lower fan 17c, so that each duct can be connected to the air outlet of each room via the shortest route with fewer bends. In this embodiment, the blower 17 and the air outlet are connected by a duct, but similar functions and effects can be achieved by connecting part or all of them by an air conditioning air duct instead of a duct. The air conditioning air duct is surrounded by the room or space to be air-conditioned, walls, and insulating material, and is airtightly treated, resulting in high airtightness and insulating properties. In this case, the spaces between floors, under the floor, attic, etc. that are naturally provided in a building are used as air conditioning ducts, so there is no need to provide a dedicated air conditioning duct, no installation space is required, and workability is improved. Furthermore, since the intake louver 50 of the air conditioning unit 3 faces the corridor 6 or the like, the return airflow 46 from the room or the like communicating with the corridor 6 or the like can be reliably sucked in from the intake louver 50, and the circulation path between the air conditioning unit 3 and the room or the like, including not only the duct but also the return air flow path, can be shortened, and there is no need to take the trouble of installing a duct or blower as the return air flow path, allowing for a rational configuration. Furthermore, a large wind volume of approximately 1950 m 3 / h, the temperature of the blown air has a small temperature difference of about 5K during cooling and about 10K during heating compared to the temperature of the intake air, and as a result the temperature inside and outside the duct is less likely to fall below the dew point temperature of the air inside and outside the duct, making it less likely for condensation to form inside or outside the duct. Also, because the temperature difference is small, there is little temperature gradient as the air passes through the duct, making it easier to maintain air conditioning capacity.

[0031] In this embodiment, the air conditioning unit 3 is an air-conditioned room enclosed within the building 2 with wooden walls, pillars, insulation, etc., but it may also be a compact housing covered with industrially pre-produced sheet metal and insulation. Furthermore, a heat exchanger (not shown) and a blower (not shown) may be placed inside the air conditioning unit 3 instead of the air conditioner 10, and a large blower may be placed below it instead of the multiple blowers 17, with a branched duct connected to the blower's outlet. If this provides the same capacity as the air conditioner 10, has the same air volume as the total air volume of the multiple blowers 17, and is otherwise identical in structure, it will provide the same functions and effects.

[0032] (Embodiment 2) FIG. 4 is a plan view of the second floor of a building showing the configuration of an air conditioning system according to the second embodiment of the present invention, and FIG. 5 is a front configuration view of an air conditioning unit of the air conditioning system. This embodiment 2 differs from embodiment 1 in the configuration of the duct, blower, etc., and as a result, the actions and effects are different. Below, only the different parts will be explained, and the parts that are not explained are basically the same as embodiment 1.

[0033] As shown in Figure 4, the air conditioning system 101, as in embodiment 1, is installed in a detached building 102 that is a highly airtight and highly insulated house, and air conditioning ducts are laid throughout the building 102 to thoroughly air-condition all rooms and spaces within the building 102. Building 102 is a house that meets the high grade (G2) standard of HEAT20 (Japan High Insulation Housing Research Association, a general incorporated association, looking 20 years into the future), and has an insulation performance (UA value) of 0.24 to 0.26. The air conditioning ducts 103, 104120 installed inside the building 102 with the above-mentioned thermal insulation and airtight performance are flexible ducts with an inner diameter of 200 mm, with an outer skin made of resin, nonwoven fabric on the inner surface, and no insulating material such as glass wool. Unlike the air conditioning ducts 30 and 31 of embodiment 1, the air conditioning ducts 103, 104, and 120 do not have the 25 mm thick glass wool, so although the inner diameter is 200 mm, the outer diameter is almost the same as that of the air conditioning ducts 30 and 31, and the required duct space is also the same.However, since they are made only of resin, they are more flexible and are easier to install than the air conditioning ducts 30 and 31. Also, nonwoven fabric is provided on the inner surface for noise reduction.

[0034] Even with such air conditioning ducts 103, 104, 120, the building 102 has good insulation and airtight performance, and the temperature of the conditioned air passing through the duct has a small temperature difference of approximately 5 K during cooling and approximately 10 K during heating compared to the temperature of the air around the duct.As will be described later, the air volume of the blower is not always zero while the air conditioner 10 is operating, so there is an extremely low possibility of condensation occurring inside or outside the duct. Air outlets 108, 109, and 110 are attached to the walls of rooms A105, B106, and C107 on the second floor of building 102, respectively, and air outlet 111 is attached to the ceiling of a room (not shown) on the first floor.The air outlet is an air intake grill that blows out conditioned air, and the air direction can be changed. A plurality of blowers (not shown) are connected to the air outlets 108, 109, 110, and 111 via air conditioning ducts 103a, 103b, 103c, 104, and 120, respectively. The air conditioning unit 113 is provided with an intake louver 50 on the right side wall 13 facing the corridor 6 of the air conditioning unit 113, above the sealed door 7. The intake louver 50 is an air inlet for introducing return air from the corridor 6, and has a removable intake filter 51 for maintenance.

[0035] 5, an equipment mounting wall 18 on which the air conditioner 10 and fans 117 and 118 are installed is provided within the air conditioning unit 113. The air conditioner 10 is installed in the upper part of the equipment mounting wall 18, and the multiple fans 117 and 118 are installed in the lower part of the equipment mounting wall 18. In this embodiment, two upper-stage fans 117a, two middle-stage fans 117b, three lower-stage fans 117c, two upper-stage large fans 118a, and one lower-stage large fan 118c are arranged side by side, but the number of multiple fans 117 and 118 varies depending on the size of the building 102. The blower 117 and the large blower 118 all have the same configuration, with a sirocco fan (not shown) and a DC motor mounted in a box-shaped blower housing (not shown), and the blower intake port (not shown) opens toward the inside of the air conditioning unit 113. An intake grill (not shown) is attached to each blower intake port (not shown). The blower 117 and the large blower 118 differ in external dimensions, with the large blower 118 being larger and the internal sirocco fan (not shown) also being larger, and the blowing volume of the blower 117 being 100 m 3 / h to 200m 3 / h, while that of the large blower 118 is 100m 3 / h to 400m 3 / h is common. The total air volume of the multiple fans 117 and 118 is 1950 m 3 / h, which is the same as in the first embodiment, and it is possible to air-condition building 102 with an area equivalent to the total floor area of ​​building 2, but because the air volume of large fan 118 is twice that of fan 117, the number of large fans 118 can be halved compared to the number of fans 117, which reduces the initial cost including air conditioning ducts and improves ease of installation.

[0036] Furthermore, since air conditioning ducts 103, 104, and 120 are used, the inner diameter is increased from 150 mm to 200 mm compared to the air conditioning ducts of embodiment 1, and even with the air volume of large blower 118, the duct pressure loss is equivalent to that of embodiment 1, and the duct pressure loss ensures the air volume, without increasing noise and power consumption. Air conditioning ducts 103, 104, and 120 are attached to the respective blower outlets (not shown). Ducts 103, 104, and 120 are arranged to send air to each room of building 102, and air conditioning duct 120 connected to upper large blower 118a is led upward from air conditioning unit 113 through duct space 53 formed between equipment mounting wall 18 and rear wall 12, passes through upper space 55 between upper plate 15 and attic 54, and is branched into air conditioning ducts 103a and 103b by branch pipe 121, and is connected via the shortest route to air outlets 108 and 109 attached to the walls of room A 105 and room B 106 on the second floor, respectively.

[0037] An air conditioning duct 103c connected to the upper blower 117a passes through the duct space 53 and the upper space 54 and is connected via the shortest route to an air outlet 110 attached to the wall of the room C107 on the second floor. The air conditioning ducts 103, 104, 120 connected to the other upper-stage blower 117a and the large upper-stage blower 118a are connected via the shortest route to air outlets (not shown) attached to the ceiling or wall of the room or space on the second floor, or to the attic 54. Air conditioning ducts 103, 104, and 120 connected to the middle-stage blower 117b, the lower-stage blower 117c, and the large lower-stage blower 118c are all led downward from the air conditioning unit 113, passing through the inter-floor space 56 between the second and first floors, with part of duct 104 being connected via the shortest route to an air outlet 111 on the ceiling of a room on the first floor (not shown). The other ducts 103, 104, 120 are connected via the shortest route to an air outlet attached to the ceiling or wall of a room or space on the first floor, or are connected via the shortest route to an air outlet (not shown) attached to the underfloor of the first floor (not shown) or the floor of a room or space on the first floor. Below the partition plate 36, an upper large-sized fan 118a and a lower large-sized fan 118c are provided. Below the partition plate opening 43, an upper stage fan 117a, a middle stage fan 117b, and a lower stage fan 117c are provided.

[0038] In the above configuration, when the plurality of fans 117, the large fan 118 and the air conditioner 10 are operated, the conditioned air whose temperature has been adjusted in the air conditioning unit 113 is sucked into the plurality of fans 117 and the large fan 118 and blown into each room, etc., thereby air-conditioning each room, etc. Return airflow 46 splits into air conditioner intake airflow 44 and bypass airflow 47, and air conditioner outlet airflow 45 and bypass airflow 47 join at approximately a right angle in mixing section 48 above partition plate 36. This generates turbulence, resulting in good mixing and conditioned airflow 49 with little temperature difference. As with the first embodiment, conditioned airflow 49 becomes even more uniform due to the resistance when it passes through partition plate opening 43, which has an area smaller than the horizontal cross section of air conditioning unit 3 and is equal to or smaller than the area of ​​intake louver 50. After that, the conditioned air flow 49 passes through the partition plate opening 43, diffuses, and is sucked into the multiple upper stage fans 117a, the multiple middle stage fans 117b, the multiple lower stage fans 117c, the upper stage large fan 118a, and the lower stage large fan 118c.

[0039] However, the direction of the fans below partition plate 36, especially the fans close to partition plate 36, is the return direction from the direction of conditioned airflow 49, so there is a large pressure loss. Furthermore, in the case of cooling operation where the specific gravity of air is high, the air tends to flow downward, so there is a possibility that the amount of air drawn into the fans close to partition plate 36 will decrease. However, in this embodiment, the upper large fan 118a with a large air volume is located directly below partition plate 36, and the sirocco fan (not shown) is larger than that of fan 117, and the inner diameters of air conditioning ducts 103, 104, and 120 are also large, so a predetermined air volume can be secured. The same applies to the lower large fan 118c. Therefore, the upper stage fan 117a, the multiple middle stage fans 117b, the multiple lower stage fans 117c, the large upper stage fan 118a, and the large lower stage fan 118c each suck in a predetermined volume of conditioned air with uniform air quality and little temperature difference and blow it into each room, etc., so that conditioned air with uniform air quality and little temperature difference can be blown into each room, etc. at a volume corresponding to the air conditioning capacity.

[0040] Furthermore, the airflow rate of blower 117 and large blower 118 is not set to 0 while air conditioning system 101 is in operation, and the wind speed of the conditioned air in air conditioning ducts 103, 104, 120 with an inner diameter of 200 mm is always controlled to 0.88 to 3.54 m / s. Generally, the evaporation rate of water due to air movement above the water surface, Y (kg / m2s), is calculated by multiplying the saturated vapor amount on the water surface, Xw (kg / m 3 ), the amount of water vapor in the air above the water surface, Xa (kg / m 3), where V (m / s) is the speed of air movement above the water surface, Y = K·V(Xw - Xa), and is proportional to the speed of movement. When this is applied to air conditioning ducts 103, 104, and 120, the amount of water condensed on the inner surface of the air conditioning duct evaporates in proportion to the wind speed of the conditioned air. Therefore, in this air conditioning system 101, even if condensation does occur inside the air conditioning duct, the airflow rate is not set to 0 and conditioned air is kept flowing at all times to allow condensation to evaporate as quickly as possible. Although the intake louver 50 is provided on the right wall 13 of the air conditioning unit 103, if the corridor 6 or the like is on the left side of the air conditioning unit 103, the intake louver 50 is provided on the left wall 14, and the air conditioner 10, partition plate 36, etc. are provided on the left side, and the partition plate opening 43, etc. are provided on the right side, so that the structure inside the air conditioning unit 103 is reversed left and right. By doing so, the same action and effect can be achieved.

[0041] (Embodiment 3) FIG. 6 is a plan view of a detached building showing the configuration of an air conditioning system according to the third embodiment of the present invention, and FIG. 7 is a cross-sectional view of the detached building showing the configuration of the same air conditioning system. This third embodiment differs from the first embodiment in the configuration of the building, air conditioning unit, ducts, blowers, etc., and as a result, the actions and effects are different. Below, only the differences will be explained; the parts that are not explained are basically the same as the first embodiment.

[0042] As shown in Figures 6 and 7, the air conditioning system 201, as in embodiment 1, is installed in a unit 202 of an apartment building that is a highly airtight and highly insulated house, and air conditioning ducts are laid throughout the unit 202 to thoroughly air-condition all the rooms and spaces within the unit 202. As shown in FIG. 6, an air conditioning unit 203 is installed in a single house 202 . The air conditioning unit 203 is also provided with a sealed door 207 that can be opened and closed to allow access to the interior from a corridor 206 for maintenance purposes and that is highly airtight when closed. In this embodiment, the air conditioning unit 203 is placed facing the corridor 206, but if it is connected as an air passage to the room from which the conditioned air is blown out and other spaces that are connected as an air passage by a door undercut, bypass duct, etc., it can air-condition the entire unit 202 thoroughly, so it may also be placed facing the above spaces, etc. The air conditioning unit 203 that generates the conditioned air is provided with a plurality of fans (not shown) and an air conditioner 210. The air conditioner 21 is connected to an outdoor air conditioning unit (not shown) installed outdoors by refrigerant piping and electrical wiring.

[0043] Air outlets 224 and 225 are attached to the walls of room A220 and room B221 of the dwelling unit 202, respectively, and air outlets 226, 227, and 228 are attached to the floors of room C222 and living room 223, respectively. The air outlets are air intake grills that blow out conditioned air, and the air direction can be changed. A plurality of fans (not shown) and the air outlets 224, 225 are connected to the air conditioning ducts 230a, 230b in a one-to-one relationship, respectively. Doors 240, 241, and 242 are provided between room A220, room B221, living room 223, and corridor 206, respectively, and undercuts (not shown) are provided below doors 240, 241, and 242 to return the conditioned air blown out from air outlets 224, 225, 227, and 228 from rooms A220, B221, and living room 223 to corridor 206 as return air. In addition, a door 244 is provided between room C222 and living room 223, and an undercut (not shown) is provided below door 244 to return the conditioned air blown out from air outlet 226 from room C222 to living room 223 as return air, and the undercut (not shown) of door 242 returns the air from living room 223 to hallway 206. If the opening area of ​​the undercut (not shown) of door 242 is small and the volume of conditioned air blown out from outlets 226, 227, and 228 returned to corridor 206 as return air is small, it is desirable to provide openings (not shown) from room C222 to corridor 206 and connect them with bypass ducts (not shown).

[0044] The air conditioning unit 203 is provided with an intake louver 250 on the right side wall (not shown) of the air conditioning unit 203 facing the corridor 206, above the sealed door 207. The intake louver 250 is an air inlet through which return air flows in from the corridor 206, and has an intake filter 251 that is removable for maintenance.

[0045] As shown in Figure 7, air conditioner 210 is installed at the top of air conditioning unit 203, and multiple upper-stage fans 217 and lower-stage fans 218 are installed at the bottom. Upper-stage fans 217 and lower-stage fans 218 all have the same configuration, with a sirocco fan (not shown) installed in a box-shaped fan housing (not shown), and fan intakes (not shown) opening toward the inside of air conditioning unit 203. An intake grill (not shown) is attached to each fan intake (not shown). Air conditioning ducts 230 and 231 are attached to the fan outlets (not shown).

[0046] The air conditioning duct 230 is arranged to send air to each room of the dwelling unit 202, and the air conditioning ducts 230a and 230b connected to the upper stage fans 217a and 217b are led upward from the air conditioning unit 203 through a duct space 253 formed between the equipment mounting wall (not shown) and the rear wall (not shown), and are connected via the shortest route through the ceiling space 254 above the top plate (not shown) to the air outlets 224 and 225 attached to the walls of room A220 and room B221. A heat exchange ventilation unit 281 is provided in the attic 254 above the ceiling 280 of the corridor 206, and performs heat exchange ventilation for the entire unit 202. An outdoor air intake hood 282 that introduces outdoor air into the room and an outdoor exhaust hood 283 that exhausts indoor air to the outside are provided in the direction of the outdoor door 284, and the outdoor air intake hood 282 and the heat exchange ventilation unit 281 are connected by an air intake duct 284 and a filter box 285 in the attic 254, and the outdoor exhaust hood 283 and the heat exchange ventilation unit 281 are connected by an exhaust duct 286 in the attic 254.

[0047] Indoor air is drawn in through a ventilation exhaust port (not shown) provided in the ceiling of the toilet 287. The drawn-in indoor air passes through an exhaust duct (not shown) in the ceiling space 254, enters the heat exchange ventilation unit 281, exchanges heat with outdoor air, passes through an exhaust duct 286, and is exhausted to the outside through an outdoor exhaust hood 283. Fresh outdoor air is introduced through an outdoor air supply hood 282. The introduced outdoor air passes through an air supply duct 284 and a filter box 285, where it is purified, enters a heat exchange air unit 281, exchanges heat with the indoor air, and is blown out from an air supply port 290 provided near the air conditioning unit 203 on the ceiling 280 of the corridor 206. Other air conditioning ducts 230 connected to other upper fans 217 pass through the ceiling space 254 and are connected to air outlets provided in the walls or ceilings of other rooms and spaces, thereby air conditioning those rooms and spaces.

[0048] The upper part of the corridor 206 is used as the ceiling 254, and space is secured for installing the heat exchange ventilation unit 281 and its ducts, etc., so it can be effectively used as space for running the air conditioning duct 230 from the air conditioning unit 203 to the rooms, etc., and maintenance is easy. It can also be used as duct space when installing this air conditioning system 201 as part of renovations. An air conditioning duct 231 connected to the lower blower 218 is connected to an underfloor space 291 provided below the air conditioning unit 203, and is open to a depth of about 2 m. The underfloor space 291 is an airtight chamber and is connected to the room C222 and the living room 223 through the air outlets 226, 227, and 228, respectively. The air outlet 226 has a fan 292 therein, and when the fan 292 is operated, it draws in air from the underfloor section 291 and blows it out from the air outlet 226 into the room C222. A partition plate 236 is provided between the air conditioner 210 and the multiple fans 217 and 218, surrounded by a right side wall (not shown), an equipment mounting wall (not shown), and a front wall (not shown), dividing the space into an air conditioner space (not shown) in which the air conditioner 210 is installed, and a fan space (not shown) in which the fans 217 and 218 are installed. A partition opening 243 is formed between the left end (not shown) of the partition 236 and the left wall (not shown). The outside dimensions of the partition plate opening 243 are smaller than the outside dimensions of the suction louver 250 and the suction filter 251 .

[0049] In the above configuration, when the plurality of fans 217, 218 and the air conditioner 210 are operated, the conditioned air whose temperature has been adjusted in the air conditioning unit 203 is sucked into the plurality of fans 217, 218 and blown into each room, etc., thereby conditioning each room, etc. The return airflow (not shown) from corridor 206 is divided into an air conditioner intake airflow (not shown) and a bypass airflow (not shown), and the air conditioner outlet airflow (not shown) and the bypass airflow (not shown) meet at approximately a right angle in a mixing section (not shown) above partition plate 236. This generates turbulence, resulting in good mixing and an air-conditioned airflow (not shown) with little temperature difference, and when the air-conditioned airflow (not shown) passes through partition plate opening 243, which has an area smaller than the horizontal cross section of air-conditioning unit 203 and is equal to or smaller than the area of ​​intake louver 250, the resistance causes the airflow to become even more uniformly conditioned air, just like in the first embodiment.

[0050] Thereafter, the conditioned air flow (not shown) passes through the partition plate opening 243 , diffuses, and is sucked into the plurality of upper stage fans 217 and the plurality of lower stage fans 218 . The conditioned air drawn into the lower blower 218 passes through an air conditioning duct 231, passes through an underfloor space 291, and is blown out from air outlets 226, 227, and 228 into a room C222 and a living room 223, respectively, for air conditioning. The conditioned air blown into room C222 returns to the hallway 206 via the living room 223, which may reduce the volume of air blown out from the outlet 226. In this case, the fan 292 of the outlet 226 can be operated to ensure a predetermined volume of air and air conditioning capacity. Although intake louver 250 is provided on the right wall (not shown) of air conditioning unit 203, if corridor 206 or the like is on the left side of air conditioning unit 203, intake louver 250 is provided on the left wall (not shown), and the air conditioner 210, partition plate 236, etc. are provided on the left side and partition plate opening 243, etc. are provided on the right side so that the structure inside air conditioning unit 203 is reversed in the left-right direction. By doing so, similar actions and effects can be achieved.

[0051] In addition, in this embodiment, the underfloor space 291 is used as an air conditioning air duct and the attic space 254 is used as a duct space, but the underfloor space may be used as a duct space and an air conditioning air duct may be provided in the attic space. In addition, in the case of a two-story detached house, the spaces between floors, under the floor, attic, etc. that are naturally provided in the building can be made airtight and used as air conditioning ventilation ducts.

[0052] In this way, the box-shaped air conditioning unit 203 can be positioned so that its right side wall (not shown), which is the short side wall of the unit, faces the open space connected to each room, such as the corridor 206, and the surface area of ​​the rooms 220 and 221 facing the corridor 206 etc. can be increased, allowing doors, storage, etc. to be provided on that surface. Even in an apartment building or the like, as in this embodiment, the air conditioning unit 203 can be provided in an empty space that is difficult to use and has a narrow surface area facing the corridor 206 etc., thereby allowing the rooms to be arranged and laid out rationally. Furthermore, since an intake grille 250 is provided on the right side wall (not shown), which is the wall on the shorter side of the air conditioning unit 203, the air conditioning unit 203 can be installed in a narrow space sandwiched between the rooms 220, 221 and a bathroom (not shown) or toilet (not shown), and can be installed near the center of the building 202. As a result, the air conditioning unit 203 is close to multiple rooms, and the distance between the air outlets of each room and the air conditioning unit 203 is short, so each duct can be shortened, the installation space for the duct can be reduced, the pressure loss in the duct can be reduced, and the ease of installation of the duct is improved. Furthermore, even in apartment buildings in particular where there is little usable space for the air conditioning system in the attic or under the floor, by utilizing the attic space where the ventilation system itself and ducts are installed, and by using the underfloor space of the floor that serves as the access floor as an air conditioning air duct, it is possible to save on installation space, including renovations, and improve workability.

[0053] In the case of an apartment building with high insulation and airtightness and a small total floor area, the total air volume of the blower can be reduced, so as explained in embodiment 2, if a flexible, non-insulated air conditioning duct with an inner diameter of 150 or 100 mm is used, the outer diameter will also be roughly the same, so installation space can be further saved and workability will be further improved. In addition, in airtight buildings, in cases where there is a large resistance in the return air path for conditioned air, such as in rooms that are not directly connected to a corridor where the air conditioning unit is located, or where the undercut area of ​​the door is small, a specified air volume can be secured by having a fan at the air outlet.

[0054] (Fourth embodiment) FIG. 8 is a plan view of a building showing the configuration of an air conditioning system in embodiment 4 of the present invention, FIG. 9 is a front view of air conditioning unit A of the air conditioning system, and FIG. 10 is a front view of air conditioning unit B of the air conditioning system. This fourth embodiment differs from the first embodiment in the configuration of the building, air conditioning unit, ducts, blowers, etc., and as a result, the actions and effects are different. Below, only the differences will be explained; the parts that are not explained are basically the same as the first embodiment.

[0055] As shown in FIG. 8, an air conditioning system 301 is installed in a highly airtight and highly insulated building 302, and air conditioning ducts are laid throughout the building 302 to air-condition all rooms and spaces within the building 302. Building 302 is intended to be a large residence with a total floor area of ​​60 tsubo or more, requiring approximately twice the air conditioning capacity and air flow volume of the air conditioning system 1 of embodiment 1, or a non-residential building of similar size, such as a hospital, commercial store, or office, with the interior divided into rooms and spaces.

[0056] As shown in FIG. 8, an air conditioning unit 303 is installed in a building 302 . The air conditioning unit 303 has the same area as the air conditioning unit 3 of embodiment 1, approximately one tatami mat in size, and is composed of air conditioning unit A303a, which is half a ken wide (910 mm), and one ken wide (1820 mm) deep, and air conditioning unit B303b, which is a longitudinal symmetrical unit of air conditioning unit A303a, and which share or are adjacent to each other's rear walls 312, so that the air conditioning unit 303 as a whole has an area of ​​approximately one tsubo (3.3 m2) and is a one ken wide square. Air conditioning unit A303a and air conditioning unit B303b are installed so that the intake louver 350a on the right side wall 313a of air conditioning unit A303a is positioned on the side of corridor 306 at the end of corridor 306, and the intake louver 350b on the left side wall 314b of air conditioning unit B303b is positioned. The suction louvers 350a and 350b are provided with suction filters 351a and 351b, respectively. Air conditioning unit A303a and air conditioning unit B303b are provided with airtight doors 307a and 307b, respectively, which can be opened and closed to allow access to the interior from corridor 306 for maintenance and which are highly airtight when closed.

[0057] In this embodiment, the air conditioning unit 303 is placed facing the corridor 306, but if it is connected as an air passage to the room from which the conditioned air is blown out and to other spaces that are connected as an air passage by a door undercut, bypass duct, etc., it can air-condition the entire building 302 thoroughly, so it may also be placed facing the above spaces, etc. Air conditioning unit A303a and air conditioning unit B303b, which generate conditioned air, are provided with multiple fans (not shown), and air conditioners 310a and 310b connected to air conditioning outdoor units (not shown) installed outdoors by refrigerant piping and electrical wiring.

[0058] As shown in Figures 9 and 10, air conditioning unit A303a and air conditioning unit B303b are box-shaped, with a front wall (not shown) at the front and a rear wall (not shown) at the rear, right side walls 313a and 313b and left side walls 314a and 314b at the sides, an upper plate 315 at the top, and a lower plate 316 at the bottom. Air conditioning unit A 303a and air conditioning unit B 303b are provided with equipment mounting walls 319a and 319b on which air conditioners 310a and 310b and fans 317 are installed. Air conditioners 310a and 310b are installed on the upper parts of equipment mounting walls 319a and 319b, and multiple fans 317 are installed on the lower parts of equipment mounting walls 319a and 319b. In this embodiment, five upper fans 317aa and 317ba, five middle fans 317ab and 317bb, and five lower fans 317ac and 317bc are arranged side by side, but the number of fans 317 varies depending on the size of building 302. All of the fans 317 have the same configuration, with a sirocco fan (not shown) mounted in a box-shaped fan housing (not shown), and the fan intakes (not shown) open toward the inside of the air conditioning units 303a and 303b. Each fan intake (not shown) is fitted with an intake grill (not shown). An air conditioning duct (not shown) is fitted to the fan outlet (not shown).

[0059] Partition plates 336a, 336b are provided between air conditioners 310a, 310b and multiple fans 317, dividing the space into an air conditioner space (not shown) in which air conditioners 310a, 310b are installed and a fan space (not shown) in which fans 317 are installed. Partition plate 336a is surrounded by right side wall 313a, equipment mounting wall 319a, and a front wall (not shown). Partition plate 336b is surrounded by left side wall 314b, equipment mounting wall 319b, and a front wall (not shown). The partition plates 336a and 336b are both removably held below the lower ends of the suction louvers 350a and 350b by partition plate holding members (not shown) fixed to the front wall (not shown) and the equipment mounting walls 319a and 319b. A partition opening 343a is formed between the left end (not shown) of partition 336a and left side wall 314a, and a partition opening 343b is formed between the right end (not shown) of partition 336b and right side wall 313b. The outside dimensions of the partition plate openings 343a and 343b are 830 mm x 560 mm, which are smaller than the outside dimensions of 850 mm x 650 mm of the suction louvers 350a and 350b and the suction filters 351a and 351b, respectively.

[0060] In the above configuration, when the multiple fans 317 and air conditioner 310 are operated, the temperature-adjusted conditioned air in the air conditioning unit 303 is sucked into the multiple fans 317 and blown into each room, space, etc., thereby conditioning each room, space, etc. The return airflow (not shown) entering intake louvers 350a and 350b is divided into an air conditioner intake airflow (not shown) and a bypass airflow (not shown), and the air conditioner outlet airflow (not shown) and the bypass airflow (not shown) join at approximately right angles in a mixing section (not shown) above partition plates 336a and 336b. This generates turbulence, resulting in good mixing and an air-conditioned airflow (not shown) with little temperature difference. As the air-conditioned airflow (not shown) passes through partition plate openings 343a and 343b, which have an area smaller than the horizontal cross section of air conditioning unit A 303a and air conditioning unit B 303b but are equal to or smaller in area than intake louvers 350a and 350b, the resistance creates a more uniform air-conditioned air, just like in the first embodiment. The conditioned airflow (not shown) then passes through partition openings 343a and 343b, diffuses, and is drawn into multiple upper fans 317aa and 317ba, multiple middle fans 317ab and 317bb, and multiple lower fans 317ac and 317bc.

[0061] In large residential and non-residential buildings such as those in this embodiment, two or more air conditioning units may be installed, but in conventional air conditioning unit configurations, there is an intake louver in the longitudinal direction, so the intake louvers of the two air conditioning units must each face spaces that are connected as air passages to rooms such as corridors from which conditioned air is blown out by door undercuts, bypass ducts, etc., and the surface area that comes into contact with corridors, rooms, and spaces is greatly reduced by the installation of air conditioning units, which places significant restrictions on the installation of doors, windows, storage, etc. on those surfaces, resulting in poor floor plans and the possibility of poor circulation. In contrast, the air conditioning system of the present invention has two air conditioning units, which are arranged so that they share a rear wall or are stacked on top of each other, and each air inlet is provided on the same side. Therefore, by locating the air inlets of the two air conditioning units on the same side, the two air conditioning units can be positioned so that the two air inlets are adjacent to open spaces connected to each room, such as corridors, stairwells, and entrance halls.In relatively large detached houses, commercial spaces such as stores, and business spaces such as hospitals, two air conditioning units can be placed in areas such as the very back of a difficult-to-use corridor, allowing for efficient use of the space within the building.

[0062] Furthermore, if a single air conditioning unit is designed and manufactured as a module, it can be adapted to the size of the building by stacking two of them in two or three locations, which makes it possible to stabilize quality, simplify design and construction, and reduce initial costs. Furthermore, because the air conditioning unit is a square of about 1 tsubo (approximately 3.3 m²), space is not an issue in large residential or non-residential spaces, and when placed inside a building as an air-conditioned room, it can accommodate a variety of floor plans. In this embodiment, it is installed at the end of a hallway, but even if it is placed in a part of a room near the center of the building so that it is adjacent to the hallway, doors, windows, storage, etc. can be installed in that room, and the distance to the room from which the air-conditioned air is blown out can be shortened, which requires less construction and is less likely to cause problems such as reduced air volume due to pressure loss and the resulting condensation. [Industrial Applicability]

[0063] The present invention is suitable for homes with multiple rooms, but can also be applied to buildings with large floor areas such as commercial facilities and hospitals. [Explanation of symbols]

[0064] 1, 201, 301 Air conditioning system 2, 302 Building 3, 113, 203, 303, 501 Air conditioning units 4 stairs 5 Staircase Hall 6, 206, 306 Corridors 7, 207, 307a, 307b Sealed Doors 10, 210, 310a, 310b air conditioner 11 Front wall 12, 312 Rear wall 13, 313a, 313b right side wall 14, 314a, 314b left side wall 15, 315 Upper Plate 16, 316 lower plate 17a(17), 117a(117) Upper blower 17b(17), 117b(117) Middle blower 17c(17), 117c(117) Lower blower 18 Equipment mounting wall 20 Room A 21 Room B 22 Room C 23, 24, 25, 26 outlet 30, 30a, 30b, 30c, 31 Air conditioning duct (air conditioning air duct) 33 Air conditioner intake 34 Air conditioner outlet 35 Up / down air direction change blade 36, 236, 336a, 336b Dividers 37 Air conditioning space 38 Blower space 39 Left end 40, 41, 42, 240, 241, 242, 244 doors 43, 243 Partition plate opening 44 Air conditioner intake airflow 45 Air conditioner outlet airflow 46 Return airflow 47 Bypass airflow 48 Mixing section 49 Air Conditioning Air Flow 50, 250, 350a, 350b Intake louver (air inlet) 51, 251, 351a, 351b Intake filters 52 Intake grill 53, 253 Duct space 54, 254 Attic 55 Upper space 56 floor spaces 101 Air Conditioning System 102 Building 103, 103a, 103b, 103c, 104, 120 Air conditioning duct (air conditioning air duct) 105 Room A 106 Room B 107 Room C 108, 109, 110, 111 outlet 118a(118) Upper large blower 118c(118) Lower large blower 121 Branch Pipe 202 houses 217, 217a, 217b Upper blower 218 Lower Fan 220 Room A 221 Room B 222 Room C 223 Living Room 224, 225, 226, 227, 228 outlet 230, 230a, 230b, 231 Air conditioning duct (air conditioning air duct) 280 Ceiling 281 Heat exchange ventilation unit 282 Outdoor air supply hood 283 Outdoor Exhaust Hood 284 Exterior door 285 Filter Box 286 Exhaust Duct 287 Toilet 290 Air supply port 291 Underfloor space (air conditioning ventilation duct) 292 fans 303a Air Conditioning Unit A 303b Air Conditioning Unit B 317 Blower 317aa, 317ba upper blower 317ab, 317bb middle stage blower 317ac, 317bc lower blower 319a, 319b Equipment mounting wall

Claims

1. Install an air outlet in a room inside the building. An air conditioner and a plurality of fans are provided in the air conditioning unit, The blower and the air outlet are connected by an air conditioning air duct, The air conditioning unit produces conditioned air, The conditioned air flows from the air conditioning unit to the air outlet, An air conditioning system in which a return airflow returns to the air conditioning unit from the room in which the air outlet is provided, The air conditioning unit is box-shaped and is covered at the front by a front wall, at the rear by a rear wall, at the sides by a right wall and a left wall, at the top by a top plate, and at the bottom by a bottom plate. a partition plate is provided within the air conditioning unit to divide the space into an air conditioner space in which the air conditioner is disposed and a blower space in which the blower is disposed; An air inlet for taking in the return airflow into the air conditioner space of the air conditioning unit is provided in the right side wall or the left side wall on a side of the air conditioner, the partition plate is provided below a lower end of the air inlet and in contact with the right side wall or the left side wall on which the air inlet is provided, The width of the partition plate is set to the width of the left and right blowing areas formed when the air conditioner is operating, a partition plate opening is formed between an end portion of the partition plate and the left side wall or the right side wall on which the air inlet is not provided, The area of ​​the air inlet is equal to or greater than the area of ​​the partition plate opening, The return airflow returning from the air inlet is divided into an air conditioner suction airflow and a bypass airflow, The airflow discharged by the air conditioner, which has sucked in the air conditioner suction airflow, and the bypass airflow are mixed and merged by the partition plate and the partition plate opening, becoming the conditioned air, which is then sucked into the blower. An air conditioning system characterized by:

2. The partition plate is provided detachably with respect to the air conditioning unit.

2. The air conditioning system according to claim 1.

3. The air conditioning unit is disposed within the building without contacting a wall surface that forms the outer periphery of the building.

2. The air conditioning system according to claim 1.

4. The air conditioning unit is disposed such that the air inlet faces any one of a corridor, a staircase hall, a hallway, and an atrium that communicates with the rooms constituting the building.

4. The air conditioning system according to claim 3.

5. The air outlet connected to the air conditioning air duct is provided on at least one of a wall or ceiling of the room in contact with the air conditioning unit, a floor or wall of the room above the air conditioning unit, and a wall or ceiling of the room below the air conditioning unit.

5. The air conditioning system according to claim 4.

6. The building is highly airtight and highly insulated, The conditioned air is generated at a temperature within 5K during cooling and within 10K during heating with respect to the temperature of the air surrounding the air conditioning duct.

2. The air conditioning system according to claim 1.

7. No heat insulating material is provided in the air conditioning air duct.

7. The air conditioning system according to claim 6.

8. The fan is provided below the partition plate and below the partition plate opening, and the air volume of the fan below the partition plate is equal to or greater than the air volume of the fan below the partition plate opening.

2. The air conditioning system according to claim 1.

9. The air conditioning duct has an outer skin made of resin and an inner surface made of nonwoven fabric, and is a flexible air conditioning duct.

2. The air conditioning system according to claim 1.

10. The air conditioning duct is an airtight space in the building, such as between floors, under the floor, or in the attic.

2. The air conditioning system according to claim 1.

11. The air outlet has a fan 2. The air conditioning system according to claim 1.

12. The two air conditioning units are provided, and the rear wall of each of the two air conditioning units is shared or overlapped, and the air inlet of each of the two air conditioning units is provided on the same side.

2. The air conditioning system according to claim 1.

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