Ventilation and air conditioning system

Abstract

This design simplifies and shortens the connection path between the outdoor unit and the building, saving space from the outdoor unit to the chamber inside the building. [Solution] The building 2 has an outdoor unit 12 that houses ventilation and air conditioning equipment on the outside. The outdoor unit 12 is installed on the outside of the wall of the building 2, with a workspace GP between it and the outer wall of the building. Inside the outdoor unit case 14, a supply air passage 16S and an exhaust air passage 16E are formed, respectively, for supplying outside air to the interior of the building and exhausting indoor air, which are handled by the ventilation and air conditioning equipment. This system 10 is formed in the duct space DS inside the building 2 and has a chamber 24 that branches the indoor air passage that connects to the interior of the building 2. The supply air passage 16S has a hollow air passage and connects to a supply-side connection passage 26S that penetrates the wall 2W and connects to the chamber 24. The exhaust air passage 16E has a hollow air passage and connects to an exhaust-side connection passage 26E that penetrates the wall 2W and connects to an indoor intake port 28.

Description

[Technical Field]

[0001] This specification discloses a ventilation and air conditioning system for providing ventilation and air conditioning to the interior spaces of a building. [Background technology]

[0002] Systems for ventilating and air conditioning the interior space of a building are exemplified in Patent Documents 1 and 2. In both of these systems described in documents 1 and 2, the units responsible for ventilation and air conditioning (called air conditioners, air conditioning units, etc.) are positioned on the exterior of the building, particularly facing the exterior wall. The pipes for ventilation and air conditioning extending from the units are connected to indoor ducts via the building walls. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-223359 [Patent Document 2] Special Publication No. 7-49873 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] According to the ventilation and air conditioning units located outdoors as described in Patent Documents 1 and 2 above, the conduit extends from the back or top of the unit toward the building wall, penetrates the wall, and enters the building. This conduit is connected to ducts that run through the ceilings and walls of the rooms (rooms) that are the target of ventilation and air conditioning in the building. However, the consideration of how to reduce the connection space occupied when the conduit extending from an outdoor unit into the building connects to the ducts inside the building is ignored.

[0005] When installing the ventilation and air conditioning units described in Patent Documents 1 and 2, the ductwork circulating within the building is usually not limited to a single system, but often consists of multiple systems. For example, two duct systems are installed to ventilate and air-condition rooms on the first and second floors. In other words, there is a desire to minimize the space occupied by ductwork within the building.

[0006] In light of the connection configurations between outdoor units and internal building ducts described in the aforementioned prior art, it is important from the standpoint of efficient use of internal building space that the conduits extending from the outdoor units can be connected to the internal building ducts in a space-saving and simpler structure. Therefore, this disclosure aims to address this issue. [Means for solving the problem]

[0007] According to one example of the present disclosure, the present invention comprises a case disposed on the outside of the building wall with a working gap between it and the outer wall of the building, and a ventilation and air conditioning unit housed in the case, wherein the outdoor unit has a supply air passage and an exhaust air passage formed inside the case for supplying outside air to the interior of the building and for exhausting the air from the interior, respectively, A chamber box is provided, which is located inside the wall opposite the outdoor unit via the aforementioned wall and defines a chamber that communicates with the indoor air passage of the building. The supply air passage includes a supply-side (first) connection passage that provides a hollow air passage and penetrates the wall to connect directly to the chamber, The aforementioned exhaust air passage includes a hollow air passage and a discharge-side (second) connecting passage that penetrates the wall and connects to the indoor intake port, A ventilation and air conditioning system is provided, characterized by having the following features. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a diagram illustrating the overall overview of the whole-building ventilation and air conditioning system that implements the ventilation and air conditioning system described in this disclosure. [Figure 2] Figure 2 illustrates a modified shape of the outdoor unit case. [Figure 3] Figure 3 illustrates the ductwork route extending from the outdoor unit through the walls of the building (entire building). [Figure 4] Figure 4 is a diagram illustrating the airflow path connecting the outdoor unit to the building. [Figure 5A] Figure 5A is a perspective view illustrating a chamber, intake, and chamber grille located in the duct space of a building. [Figure 5B] Figure 5B is a front view illustrating a chamber, intake, and chamber grille located in the duct space of a building. [Figure 5C] Figure 5C illustrates a modified example of the chamber and suction port. [Figure 5D] Figure 5D illustrates a modified example of the chamber and suction port. [Figure 5E] Figure 5E illustrates a modified example of the chamber and suction port. [Figure 5F] Figure 5F illustrates a modified example of the chamber and suction port. [Figure 6] Figure 6 illustrates the airflow path connecting another building to the outdoor unit. [Figure 7] Figure 7 illustrates an alternative installation location for the suction chamber grille. [Figure 8A] Figure 8A shows examples of perspective views of the outdoor unit case from the front and rear, with the front perspective view illustrating the presence of equipment inside the case. [Figure 8B] Figure 8B is a perspective view of the outdoor unit case from the front and rear. [Figure 9] Figure 9 is a block diagram illustrating the overview of ventilation and air conditioning equipment. [Figure 10] Figure 10 is a diagram illustrating the supply airflow and exhaust airflow paths inside the outdoor unit, along with the main ventilation and air conditioning equipment. [Figure 11A] Figure 11A is a perspective view illustrating example 1 of the structure of supply and discharge connection paths connecting the outdoor unit to the interior of the building. [Figure 11B] Figure 11B is a perspective view illustrating example 1 of the structure of supply and discharge connection paths connecting the outdoor unit to the interior of the building. [Figure 11C] Figure 11C is a diagram illustrating the displacement absorption function of Example 1 of the structure of the supply and discharge connection paths that connect the outdoor unit to the inside of the building. [Figure 12A] Figure 12A is a perspective view illustrating example 2 of the structure of supply and discharge connection paths connecting the outdoor unit to the interior of the building. [Figure 12B] Figure 12B is a cross-sectional view illustrating example 2 of the structure of supply and discharge connection paths connecting the outdoor unit to the interior of the building. [Figure 12C] Figure 12C is a diagram illustrating the positional absorption function of Example 2 of the structure of the supply and discharge connection paths that connect the outdoor unit to the inside of the building. [Figure 13A] Figure 13A is a perspective view illustrating example 3 of the structure of supply and discharge connection paths connecting the outdoor unit to the interior of the building. [Figure 13B] Figure 13B is a perspective view illustrating example 3 of the structure of supply and discharge connection paths connecting the outdoor unit to the interior of the building. [Figure 13C] Figure 13C is a diagram illustrating the positional absorption function of Example 3 of the structure of the supply and discharge connection paths that connect the outdoor unit to the inside of the building. [Figure 14] Figure 14 is an explanatory diagram illustrating a modified example of the structure of supply and discharge connection lines connecting the outdoor unit to the interior of the building. [Modes for carrying out the invention]

[0009] The following describes an embodiment of a whole-building ventilation and air conditioning system that implements the ventilation and air conditioning system described herein, with reference to the attached drawings.

[0010] (First Embodiment) A whole-building ventilation and air conditioning system according to the first embodiment and its modified form will be described with reference to Figures 1-14.

[0011] In this disclosure, "whole building" means that the ventilation or air conditioning is responsible for all rooms and spaces in a building that are subject to ventilation and air conditioning, and also that there are rooms and spaces in a building that do not require ventilation and air conditioning, but it is possible to install ventilation and air conditioning equipment if desired. Buildings include houses as shown in Figure 1, apartment buildings and condominiums, and buildings that house many offices and shops.

[0012] <System and Airflow Overview> Figure 1 schematically illustrates a residential building as Building 2. This building 2 is a two-story building with an interfloor space (BF) between the first floor (1F) and the second floor (2F), and an attic space (UR) above the ceiling of the second floor.

[0013] This house 2 is equipped with a whole-house ventilation and air conditioning system 10. This whole-house ventilation and air conditioning system 10 (ventilation and air conditioning system) has an outdoor unit 12 installed on the outside of building 2, and the space 2obj (rooms, corridors, etc.; hereinafter referred to as "target space") of building 2 is connected to the outdoor unit 12 both by airflow and by an indoor air passage WPhe (for example, a duct 20) that connects to the target space 2obj of building 2. The interior of the building is collectively referred to by the reference numeral 2isd, and this building interior 2isd includes the space 2obj that is the target space for ventilation and air conditioning and other non-target spaces.

[0014] The outdoor unit 12 comprises an outdoor unit case 14 (also simply called the case) installed on the outside of the wall 2W of the building 2, with a connection space GP between it and the outer wall 2Wout of the building 2, and a ventilation and air conditioning device 18 (not shown in Figure 1; see Figures 8 and 10 described later) housed inside the outdoor unit case 14, which is responsible for ventilation and air conditioning inside the building 2. Inside the outdoor unit case 12, as described later, supply air passages 16S (specifically 16S1, 16S2, 16S3: collectively referred to as 16S) and exhaust air passages 16E are defined for supplying outside air to the target space 2obj of the building 2, which is the target of ventilation and air conditioning of the building 2, and for discharging air that has circulated within the building (see Figure 10). The above-mentioned connection space GP is set to a minimum predetermined value, for example, 100-150 mm (diameter), based on the standard width of a construction worker's hand, and intended to save space, so that a construction worker's hand can fit through.

[0015] Furthermore, as shown in Figure 4, this whole-building ventilation and air conditioning system 10 is installed in a structure 2C such as the interior wall of the building 2 and includes a chamber 24 (see Figures 5A to 5F: the definition of a chamber in this embodiment will be described later) that branches off an indoor air passage WPhs (for example, a duct 20) that connects to a target space 2obj of the building 2, as well as a supply-side connection passage (having a supply-side connection part) 26S and an exhaust-side connection passage (having an exhaust-side connection part) 26E. The structure of these will be described later, but the supply-side connection passage 26S connects the supply air passage 16S to the supply-side chamber 24 by providing a hollow air passage and penetrating the wall 2W. The exhaust-side connection passage 26E connects the exhaust air passage 16E to an indoor intake port (see Figures 5A to 5F: described later) 28 by providing a hollow air passage and penetrating the wall 2W. This intake port 28 opens into the exhaust-side chamber 29.

[0016] Specifically, as can be seen from Figure 1, the outdoor unit case 12 of the outdoor unit 12 is installed adjacent to the exterior wall 2Wout of the building (house) 2 and via a connection space GP of a predetermined width WD in the depth direction (the direction along the ground GD on which the building 2 is built). Here, the depth direction refers to the direction (front-to-back direction) when the outdoor unit case 12 is viewed with the building 2 as the background, and is shown in the Z direction as shown in Figure 1. Therefore, as shown in Figure 1, by using the shape of the outdoor unit case as a reference, the directionality can be explained more simply by setting up a Cartesian coordinate system with a width direction X and a height direction Y relative to the depth direction Z.

[0017] As described above, the outdoor unit case 12, which forms the exterior of the outdoor unit 12, is a rectangular parallelepiped (box-shaped) with a width direction X, a height direction Y, and a depth direction Z. In the depth direction Z, there is a front panel FR (hereinafter simply referred to as the front) and a rear panel RE (hereinafter simply referred to as the rear), and in the height direction Y, there is a bottom surface BT (i.e., bottom plate) and a top surface US (i.e., top plate). In addition, there are sides (i.e., side panels) in the width direction X. An example of the size is a width of 750 mm, a height of 1650 mm, and a depth of 350 mm for the outdoor unit case, but this may vary depending on the design specifications.

[0018] Here, the outdoor unit case 12 is required to have a bottom surface BT for installation on the mounting surface GD, but the other surfaces, the front panel FR, the top surface (frame) US, and the rear panel RE, do not necessarily have to be flat. For example, the front panel FR, the top surface US, and the rear panel RE may be tapered, partially rounded, or have irregularities. Some of these modified examples of the appearance of the outdoor unit case 12 are schematically shown in Figures 2(A), (B), and (C).

[0019] In one preferred example, as shown in Figure 1, the supply-side connection path 26S (first connection path) and the discharge-side connection path 26E (second connection path) extend linearly from a part of the rear panel RE toward the exterior wall 2Wout of the building 2, and each penetrates the wall 2W as an air passage and connects to the duct piping DCT described later toward the target space 2obj. As a result, the supply air passage 16S and the discharge air passage 16E inside the outdoor unit case 12 are in communication via the air passage with the duct piping DCT laid inside the building 2isd.

[0020] An example of this ducting path DCT is schematically shown in Figure 3. This ducting DCT has ducting DCT1 and DCT2 laid on the 1st and 2nd floors of building 2, branching off from the supply side chamber 24, which will be described later, as shown in the figure. The air that has circulated inside the building 2isd is discharged as a ventilation flow from the intake port 28 (discharge side chamber 29), which will be described later.

[0021] Furthermore, Figure 4 schematically illustrates the airflow path between the outdoor unit 12 and the building 2. In this figure (and in other figures as well), the abbreviations used to indicate the air outlet and inlet of the ducts are: OA (Outside Air or Outdoor Air: an outdoor air intake duct that brings outside air into the air conditioner from outdoors (outside air)), SA (Supply Air: a duct that sends air from the air conditioner into the building (supply air)), and RA (Return). Air: A return air duct (return air) draws air from indoors to the air conditioner, and EA (Exhaust Air: an exhaust duct (exhaust)) is used to expel air to the outdoors through the air conditioner. The internal structure of the outdoor unit 12 will be described later, but the supply air passage 16S and the exhaust air passage 16E defined inside the outdoor unit 12 are connected to the supply side chamber 24 and the exhaust side chamber 28 through the supply side connection passage 26S and the exhaust side connection passage 26E. As a result, the conditioned air or outside air via the outdoor unit 12 is blown into the target space 2obj via the duct path (structure) DCT described above. Therefore, the air that has passed not only through the target space 2obj but also through the building interior 2isd is discharged outside the building 2 through the outdoor unit 12 from the exhaust side chamber 28 (intake port).

[0022] One of the most distinctive features of the whole-house ventilation and air conditioning system 10 installed in this building 2 is that i) a supply-side connection passage 26S and an exhaust-side connection passage 26E are provided that penetrate the building 2 in a straight line from the rear panel RE of the outdoor unit 12, leaving only the shortest necessary connection space GP. Another distinctive feature is that ii) a duct space DS for piping to each target space 2obj is located opposite the penetration points of the supply-side connection passage 26S and the exhaust-side connection passage 26E in the interior wall 2Win, which is a structural element 2C of the target space 2obj of the building 2.

[0023] As can be seen from Figures 1 and 5A, this duct space DS is secured between the double walls by laying an inner wall 2C as a structure inside the building wall 2W. This double wall structure may be formed over the entire wall surface, or a part of the wall surface may be formed to protrude vertically. In this embodiment, this "duct space DS" is defined in a narrow sense. That is, it does not refer to the space represented by the entire duct as an air passage around the building interior 2isd, but rather the space spatially occupied by the chamber 24 to which the supply-side connection passage 26S and discharge-side connection passage 26E extending from the outdoor unit 12 penetrate the wall 2W and are directly connected in the building interior 2isd. In particular, in this embodiment, from the viewpoint of effective use of the space in the building interior 2isd, it refers to the size occupied by the chamber 24 in the depth direction Z (see Figure 1).

[0024] The configuration of the chamber 24 and the intake port 28 will now be explained with reference to Figures 5A to 5F. In this embodiment, the chamber 24 is located at one end of the supply-side connection passage 26S (i.e., the sleeve embedded in the wall 2W, which will be described later) on the indoor side, and is a small space that allows air from the supply-side connection passage 26S to pass through to the duct. Note that this concept of "small" is relative, and it is desirable that it be the same size as the diameter of one end of the supply-side connection passage 26S on the indoor side (i.e., the diameter of the sleeve embedded in the wall 2W) or larger by a predetermined value. In practice, the chamber 24 is defined by a chamber box 27, as will be described later. For this reason, it is effective in terms of space saving and aesthetics if the chamber box 27 fits into the duct space, which will be described later. When multiple ducts are connected to the chamber box 27, the chamber 24 has the function of dividing (distributing) the air flowing in from the supply-side connection passage 26S.

[0025] On the other hand, in this embodiment, the intake port 28 functions as one end of the indoor side of the discharge side connection passage 26E (i.e., another sleeve embedded in the wall 2W, which will be described later). Of course, a small enclosed space similar to the chamber described above may be formed by widening that end. This intake port 28 is the opening through which the air flowing through the indoor exhaust air passage WPout (the shape of the air passage is undefined) (air that has been circulated indoors, etc., with its temperature and humidity adjusted) is drawn towards the outdoor case 14.

[0026] Furthermore, various examples of the structure of the chamber box 27 will be described in detail with reference to Figures 1, 4 and 5A-5F.

[0027] As shown in Figure 5A, the indoor end of the supply-side connection passage 26S (i.e., the sleeve embedded in the wall 2W described later) and the indoor end of the discharge-side connection passage 26E (i.e., another sleeve embedded in the wall 2W) are integrally covered by, for example, a vertically elongated, rectangular chamber box 27. The rear side of this chamber box 27 is not closed and is open, but is partitioned by a partition plate 27A to define an upper space and a lower space. Therefore, the supply-side connection passage 26S (i.e., the sleeve embedded in the wall 2W described later) opens into the upper space of the chamber box 27, and the entrance to the discharge-side connection passage 26E opens into the lower space. The upper space forms the supply-side chamber (or simply called the "chamber") 24 described above, and the lower space forms the discharge-side chamber 29.

[0028] In this embodiment, inspection openings 30U and 30L are formed on the front surface of the chamber box 27, respectively, allowing inspection of the upper space, i.e., the supply-side chamber 24, and the lower space, i.e., the discharge-side chamber 28. Of these inspection openings 30U and 30L, the upper inspection opening 30U in the height Y direction is covered with a removable cover 32, and is configured to be closed with the cover 32 when not in use for inspection. On the other hand, a lattice-shaped grill 34 can be removablely placed over the inspection opening 30L of the lower discharge-side chamber 29. The indoor exhaust air that has passed through the air passage WPout for indoor exhaust is discharged to the outside from the exhaust air passage 16E of the outdoor unit case 14 via the gaps in the filter 33, the lattice-shaped gaps in the grill 34, the discharge-side chamber 28, and the discharge-side connection passage 26E (see Figure 4). The cover 32 and the grill 34 are detachably laid almost flush with the surface of the inner wall 2C as structural components.

[0029] A distinctive feature of this structure lies in the position and structure of the upper and lower inspection openings 30U and 30L. Specifically, when the cover 32 and the grille 34 (filter 33) are removed, the indoor ends of the sleeve 92 (see Figures 11-13 below), which forms part of the supply-side connection passage 26S and the discharge-side connection passage 26E, and is installed penetrating the wall 2W, become clearly visible. This makes maintenance and inspection of the connection passages 26S and 26E easier. Furthermore, when installing the outdoor unit 12, the worker can access the air intake opening 14 on the rear panel RE of the outdoor unit case 14, which is installed (temporarily placed or permanently fixed) on the outside of the building wall 2W. SA , ventilation opening 14 RA The position of each can be confirmed. In other words, the positions of the two sleeves 92 are fixed during construction, so the air intake 14 of the rear panel RE is located at the positions of these two sleeves 92. SA , ventilation opening 14 RA The height and lateral position of the outdoor unit case 14, that is, its position along the XY plane as shown in Figure 1, can be adjusted to make their respective positions match as closely as possible. This position adjustment is performed by adjusting the two sleeves 92 and the air intake 14. SA , ventilation opening 14 RA The positional misalignment between each of these components is adjusted to fall within a predetermined tolerance range. By keeping this misalignment within a predetermined tolerance range, the misalignment absorption function, which will be explained later with reference to Figures 11 to 13, can be effectively utilized. The outdoor unit case 14, with its position adjusted, is then fixed in place.

[0030] Furthermore, as shown in Figures 1 and 5A, 5B, one or more ducts 20 forming an indoor air passage WPhs laid inside the building 2isd are directly connected to the supply chamber 24. These ducts 20 are routed along the walls. When multiple ducts 20 are connected to the chamber 24, outside air or other air flowing into the chamber 24 is divided among the multiple ducts 20 within the chamber 24.

[0031] Furthermore, the area DS in the building interior 2isd where the chamber box 27 protrudes is used as a duct space. Therefore, the duct 20 is laid so as to fit within this duct space DS.

[0032] The intake port 28 (i.e., the discharge side chamber 29), which forms part of the discharge air passage 16E, is adjacent to the chamber 24 at the bottom in the height direction Y, as shown in Figure 1, for example. For this reason, in the building interior 2isd, it is aesthetically preferable to enclose the supply side chamber 24 and the discharge side chamber 29 in a chamber box 27, as shown in Figures 5A and 5B. In that case, the duct space DS may be defined to include the three-dimensional space occupied by this chamber box 27 in the building interior 2isd.

[0033] Furthermore, the exhaust air passage does not have a structure enclosed by a duct or anything like that. Indoor air that has circulated through the target space 2obj and the interior space 2isd of the building, such as the stairs, is collected in the exhaust chamber 29 by the suction force of the fan of the outdoor unit 12. This indoor air is then discharged to the outside from the outdoor unit 12 via the exhaust connection passage 26E and the exhaust air passage 16E inside the outdoor unit 12.

[0034] Here, in the interior of the building 2isd, the duct 20 forming the indoor air passage WPhs is connected to two upper openings of the chamber 24 and laid upward. Of course, as another example, as shown in Figure 5C, the duct 20 may be connected to one or more openings made on at least one of the left and right sides of the chamber 24 and laid in the left-right direction. Also, as shown in Figure 5D, the duct 20 may be laid upward and laterally from the chamber 24.

[0035] In Figure 5E, the aforementioned discharge chamber 29 is not provided, and the suction port 28 opens directly into the room 2Win from the wall 2W, with the chamber 34' detachably attached to it. In other words, the discharge chamber 29 does not necessarily have to be provided at this suction port 28. In this simplified configuration, the aforementioned alignment work and maintenance can be performed in the same way by removing the chamber 34' during construction or inspection. Also, as mentioned above, the sleeve 92 and the air intake port 14 of the rear panel RE SA , ventilation opening 14 RA It can also function as an inspection hatch, allowing for visual inspection of any misalignment.

[0036] Thus, the above features i) and ii) combine to connect the supply air passage 16S and exhaust air passage 16E, described later, for ventilation and air conditioning of the outdoor unit 12, via the supply side connection passage 26S and the exhaust side connection passage 26E, through the supply side chamber 24 and the exhaust side chamber 28 over a short distance. For this reason, the supply side chamber 24 is responsible for one end of supplying air to the interior 2isd of the building 2, and the exhaust side chamber 28 is responsible for one end of exhausting air from the room. The supply side chamber 24 and the exhaust side chamber 28 are, of course, connected to the outside air supply duct 20 (air passage WPin) and the indoor exhaust air passage WPout, which are laid on the indoor side.

[0037] Therefore, these feature configurations i) and ii) make it possible to reduce the space (distance) LD (see Figure 1) including the duct space DS from the rear panel RE of the outdoor unit case 12 of the outdoor unit 12. This space saving both inside and outside the building 2 makes it possible to make the space occupied by equipment placed outside the building 2 more compact and to make effective use of the space inside the building 2.

[0038] Although the interior wall 2Win is given as an example of the structure of building 2, this is just one example, and other structures (such as walls) such as 3D-printed houses or dome houses may be used instead. For example, Figure 6 conceptually shows a 3D-printed house 37 as one modified example. Specifically, as shown in Figure 6, the box-shaped 3D-printed house 37 has two walls 37A and 37B (which function as two structures 2C) on its outer side, with a gap SK forming between them to serve as an air passage. This gap SK opens through a chamber, for example, around part of the wall of the living space or required space, such as the ceiling. Therefore, the duct extending from the outdoor unit 12 penetrates the wall of the 3D-printed house 37 and is connected to the gap SK via a connection box CB which serves as a chamber. This also provides an indoor air passage for ventilation and air conditioning around the living spaces of the 3D-printed house 37.

[0039] Figure 7 shows another example of a suction chamber with a grille serving as an inlet for indoor air discharge, as a different modification. According to the building interior 2isd configuration shown in Figure 1, the discharge chamber 28 is not limited to being located adjacent to the supply chamber 24 on the first floor 1F. For example, as shown in Figure 7, the discharge chamber 28 may be located in the attic UR and separated from the supply chamber 24 for outside air introduction.

[0040] Furthermore, the modified forms shown in Figures 6 and 7 can also be equipped with the displacement absorption (adjustment) mechanism described later.

[0041] <Outdoor unit> Figure 8A is a perspective view showing the internal structure of the air conditioner 12 from the front and rear sides, with the outdoor unit case 14 and its front panel FR removed, along with the insulation material attached to them. Figure 8B shows the rear panel RE of the outdoor case 14.

[0042] The outdoor unit case 14 is formed in a roughly rectangular parallelepiped shape using metal plates such as steel plates, and the front panel FR and rear panel RE, which form part of the outdoor unit case 14, are detachably formed from the case frame FM (which forms the top and both sides). As mentioned above, the air conditioner 12 is installed on a leveled installation surface GD with its rear panel RE facing the wall 2W of the building 2.

[0043] As can be seen from the figure, the interior of this outdoor case 14 is divided in the height direction Y into three upper, middle, and lower spaces 14U, 14M, and 14L, with two shelves 34 and 36 installed horizontally.

[0044] When the outdoor unit case 14 is viewed from its front panel FR in the depth direction Z, the upper space 14U is further divided by a partition plate 38 into two upper left spaces 14UL and upper right spaces 14UR in the width direction X. However, a portion of these left and right partitions utilizes the side surface of the total heat exchanger, which will be described later. Similarly, the middle space 14M is divided by a partition plate 39 into two left middle spaces 14ML and right middle spaces 14MR in the width direction X. However, a portion of these left and right partitions also utilizes the side surface of the total heat exchanger, which will be described later. In other words, the total heat exchanger is positioned so that a portion of it penetrates a portion of the upper shelf 34 and is visible in both the upper space U and the middle space 14M.

[0045] In addition, in each of these five spaces—the upper left space 14UL, the upper right space 14UR, the middle left space 14ML, the middle right space 14MR, and the lower space 14L—the air conditioning equipment 18A (see Figure 9) that constitutes the heat pump cycle and the ventilation equipment 18B (see Figure 9) that constitutes the ventilation mechanism for circulating outside air are arranged so that the air circulates in the shortest possible path. Particular care has been taken in this arrangement to place equipment that is sensitive to condensation and raindrops in the higher spaces.

[0046] As shown in Figure 9, the air conditioning unit 18A includes a compressor 40, a four-way valve 42, an indoor heat exchanger 44, an electric expansion valve 46, an outdoor heat exchanger 48, and refrigerant piping 50 (not shown in Figures 8A and 8B) connecting these units. These units are interconnected via the refrigerant piping 50, as shown in Figure 9, enabling heat exchange for cooling and heating by adiabatic compression and adiabatic expansion of the refrigerant. Switching between cooling and heating is performed by switching the path of the four-way valve 42 via a control signal transmitted from a controller, which will be described later. The controller controls the on / off status and operating state of each unit in response to command signals that selectively command cooling / heating and ventilation output from an operating terminal such as a remote control operated by the user.

[0047] Although not specifically shown in the diagram, the compressor 40 repeatedly expands and contracts the volume of its compression chamber in response to the rotation of the motor. When the volume of the compression chamber expands, refrigerant is drawn into the compression chamber, and when the volume of the compression chamber contracts, the refrigerant is compressed and discharged. The four-way valve 42 switches the refrigerant flow between cooling and heating. In the cooling flow, the four-way valve 42 is switched so that refrigerant from the indoor heat exchanger 44 is drawn into the compressor 40, and the refrigerant discharged from the compressor 40 flows into the outdoor heat exchanger 48. In the heating flow, the four-way valve 42 is switched so that the direction of the refrigerant flow is reversed. In the heating flow, the four-way valve 42 draws refrigerant from the outdoor heat exchanger 48 into the compressor 40, and the refrigerant discharged from the compressor 40 flows towards the indoor heat exchanger 44. The electric expansion valve 46 adiabatically expands the refrigerant, converting the high-temperature, high-pressure refrigerant on the upstream side to a low-temperature, low-pressure refrigerant and flowing it downstream. The electric expansion valve 46 is an expansion valve capable of controlling the area of ​​the throttling portion to optimize the adiabatic expansion of the refrigerant during cooling and heating operations. However, in this disclosure, it is not essential to control the expansion valve electrically. A mechanical expansion valve that variably controls the area of ​​the throttling portion according to the refrigerant pressure may be used. Alternatively, a capillary tube capable of adiabatic expansion of the refrigerant may be used. In this disclosure, devices having adiabatic expansion function for the refrigerant, such as the electric expansion valve 46, mechanical expansion valves, and capillary tubes, are collectively referred to as expanders.

[0048] On the other hand, as shown in Figure 9, the ventilation equipment 18B includes the total heat exchanger 60 described above as its main component. This total heat exchanger 60 is a device located inside the air conditioner case 14 that performs heat exchange of sensible heat and latent heat between the indoor air flowing in from the inside of the building 2isd and the outdoor air taken in from outside the air conditioner. Note that this total heat exchanger 60 is not limited to a configuration that performs heat exchange of sensible and latent heat, and may be a heat exchanger that performs heat exchange of sensible heat only. It is sufficient that heat can be exchanged between the indoor air and the outdoor air.

[0049] As an example, the total heat exchanger 60, although its structure is not shown in the diagram, consists of rectangular flat nonwoven fabrics and corrugated nonwoven fabrics for airflow arranged alternately within a frame located at the four corners. End plates are provided to hold and support the flat and corrugated nonwoven fabrics. The corrugated nonwoven fabric has alternating internal air passages and external air passages arranged perpendicularly to each other. Therefore, sensible heat exchange occurs between the internal and external air through heat transfer between the flat and corrugated nonwoven fabrics. Furthermore, since moisture can pass through the flat nonwoven fabric, latent heat exchange from humid air to dry air is also possible. For example, the thickness of the flat nonwoven fabric is only a few tens of micrometers. The height of the air passages in the corrugated nonwoven fabric is about 2.5 millimeters. Therefore, the flat and corrugated nonwoven fabrics are actually stacked in many layers. As a result, as simulated in Figure 10, the directions in which the internal and external air pass through are perpendicular to each other.

[0050] Furthermore, the total heat exchanger 60 is equipped with an outside air bypass passage 60BY that bypasses outside air, and an on-off valve 62 that can open or close this outside air bypass passage 60BY (see Figure 10). This on-off valve 62 is also controlled by a controller.

[0051] As described above, the total heat exchanger 60 requires that the directions of passage for the internal and external air intersect. For this reason, as shown in Figure 8A, the total heat exchanger 60 is positioned diagonally by shelves 34 and partition plates 38,40 that separate the upper space 14U and the middle space 14M, so that its four sides each overlook the upper left space 14UL, the upper right space 14UR, the left middle space 14ML, and the right middle space 14MR.

[0052] Further, as shown in FIG. 8B, on the rear panel RE of the outdoor unit case 14, there are provided an outside air inlet 14 OA , an air supply port 14 SA , a ventilation port 14 RA , an exhaust port 14 EA , and an outside air blower port 14 OUT . Among these, the air supply port 14 SA and the ventilation port 14 RA are, as shown in the figure, located in the substantially central portion in the width direction X of the rear panel RE and in the upper portion in the height direction Y, and are adjacent to each other with an appropriate space vertically. The air supply port 14 SA and the ventilation port 14 RA are set as openings having a circular cross section along the XY plane in this embodiment. Of course, this opening does not have to be circular, and may be, for example, a quadrilateral or a pentagon.

[0053] These air supply ports 14 SA and the ventilation ports 14 RA are connected to the sleeves through which the aforementioned supply side connection path (first connection path) 26S and the discharge side connection path 26E (second connection path) penetrate and are embedded in the building wall 2W in a position-adjustable manner. This connection configuration forms another feature of the present disclosure and various connection modes can be adopted, which will be described later.

[0054] Also, the outside air inlet 14 OA is arranged substantially adjacent to the air supply port 14 SA in the width direction X as shown in FIG. 8B. The outside air inlet 14 OA is illustrated as having a quadrilateral shape, but of course, it may be circular. Outside air is introduced from this outside air inlet 14 OA into the left upper space 14UL.

[0055] Furthermore, the exhaust port 14 EA is, for example, a horizontally elongated rectangular opening formed in a part of the rear panel RE of the outdoor unit case 14, and communicates the inside and outside of the outdoor unit case 14. This exhaust port 14 EAMore specifically, as shown in Figure 8B, it is located directly above the lower space 14L of the outdoor unit case 14, and in a position corresponding to the lower side of the left middle space 14ML (upper side of the partition plate 40).

[0056] Furthermore, the rear panel RE of the outdoor unit case 14 has a rectangular outside air outlet 14 that takes in outside air and allows it to pass through the space 14L below the case along the depth direction Z. OUT This is formed. This outside air outlet 14 OUT It is equipped with a dust filter (not shown).

[0057] Furthermore, as shown in the diagram, there is an air intake 14 at the top of the rear panel RE of the outdoor unit case 14. SA and ventilation opening 14 RA Specifically, a simple U-shaped cover 74, intended to protect against wind and rain, is detachably attached to surround the supply side (first) connection passage 26S and the discharge side (second) connection passage 26E, which will be described in detail later. This cover 74 is located between the building 2 and the wall 2W.

[0058] Although not shown in the diagram, an inspection opening for inspecting the interior is provided on either the front panel FR of the outdoor unit case 14 or on either or both of the sides of the outdoor unit case 14.

[0059] <Instrument layout inside the outdoor unit case> In the upper, middle, and lower spaces 14U, 14M, and 14L of the outdoor unit case 14, the air conditioning equipment 18A and ventilation equipment 18B are arranged, and supply paths 16S and discharge paths 16E are formed that circulate through these devices.

[0060] Figure 10 shows the positional relationship between the supply path 16S and the exhaust path 16E, and the air conditioning and ventilation equipment through which the air flows along these air paths. Therefore, the equipment placement shown in Figure 10 differs from the actual equipment placement shown in Figure 8A.

[0061] The above-mentioned supply path 16S is supplied with outside air through the ventilation fan 82 and the indoor air blower fan 83, through the intake of outside air 14 OAThe air then passes through the total heat exchanger 60 and the indoor heat exchanger 44, where the aforementioned heat exchange is performed, and the air after this heat exchange is supplied to the air intake 14. SA There is an air passage 16S1 that leads to the air outlet. Similarly, in the supply path 16S, when the on / off valve 62 is open, the air passes through the outside air bypass passage 60BY and the indoor heat exchanger 44 to the air inlet 14. SA There is an air passage 16S2 that leads to it. Furthermore, the supply path 16S has a ventilation opening 14 RA When the on / off valve 86 is open, the indoor air flows in through the indoor heat exchanger 44 to the air intake 14. SA This also includes the 16S3 airflow path that leads to the exit point.

[0062] On the other hand, when the on / off valve 86 is closed, the exhaust air passage 16E has a ventilation opening 14 RA Indoor air entering from the outside is drawn in by the suction force of the ventilation fan 88, passes through the total heat exchanger 60, and exits through the exhaust port 14. EA It is discharged from the outside of the outdoor unit case 14.

[0063] As shown in Figure 8A, the upper space 14U houses the aforementioned indoor exhaust (RA) filter 82, ventilation fan 83, and control box 80 containing the controller. A total heat exchanger 60 is interposed between the upper space 14U and the middle space 14M. Furthermore, the middle space 14M houses ventilation fan 88, ventilation fan 82, and indoor heat exchanger 44. The lower space 14L houses the outdoor heat exchanger 48 and outdoor exhaust fan 91. The piping 50 (see Figure 9) is not shown in Figure 8A.

[0064] <Connection path between the outdoor unit case and the building> Next, with reference to Figures 11 to 13, the supply-side connection path 26S (first connection path) and the discharge-side connection path 26E (second connection path) that connect the outdoor unit case 14 to the building 2 will be described.

[0065] As shown in Figure 1, these supply-side connection passages 26S and discharge-side connection passages 26E extend from the rear panel RE of the outdoor unit case 14 in a depth direction Z that is almost horizontal to the case installation surface GD, and penetrate the wall 2W of the building 2. As a result, the supply-side path 16E inside the outdoor unit case 14 communicates with the duct 20 via the supply-side chamber 24 inside the building 2isd. For the discharge side of indoor air, the indoor air passages WPhs similarly connect to the discharge-side connection passage 26E, forming an air passage from the rear panel RE of the outdoor unit case 14 to the discharge path 16E inside the outdoor unit case 14.

[0066] Each of these connecting passages 26S and 26E is provided with a hollow cylindrical member, with both ends connected, as a means of connecting the outdoor unit side and the building side.

[0067] This cylindrical member has a misalignment absorption function that can absorb misalignment between the opening 14SA (14RA) on the outdoor unit side and the connection point (specifically, the sleeve 92) made in the wall 2W of the building 2 within a certain tolerance range. Of course, this cylindrical member is not limited to a cylindrical shape; it may also be a polygonal prism shape as long as it is hollow.

[0068] In this embodiment, the supply-side connection passage 26S (first connection passage) and the discharge-side connection passage 26E are positioned approximately flat with respect to the case mounting surface GD when viewed in the depth direction Z, as described above. However, they may be arranged to have an up-and-down or diagonal positional relationship in the height direction Y.

[0069] Furthermore, in this embodiment, both connection paths 26S and 26E have the same configuration, but they may be connected with different configurations by selecting any of the Examples 1 to 3 detailed below.

[0070] <Example of connection path structure 1> A structural example 1, which is applied to both the supply-side connection path 26S and the discharge-side connection path 26E, will be described with reference to Figures 11A, 11B, and 11C.

[0071] The wall 2W of building 2 has an air intake 14 for the outdoor unit 12 which will be installed on the outside. SA and ventilation opening 14RA Two through holes 90 (see Figure 11A) are drilled at the positions indicated. A hollow, cylindrical sleeve 92 is inserted into each through hole 90. The cross-sectional shape of this sleeve 92 (the shape of the cross-section perpendicular to the axial direction AX = Z axis) does not necessarily have to be circular; it may be a polygon such as a square or pentagon.

[0072] As shown in Figure 11A, the sleeve 92 according to this structural example 1 integrally comprises an outer cylinder 92A of a predetermined wall thickness and a metal inner cylinder 92B inserted inside the outer cylinder 92A. The tip portion 92E of the inner cylinder 92B protrudes from the outer cylinder 91A by a predetermined distance. A position adjustment collar 102, described later, is formed to be inserted into this tip portion 92E in a tight fit (see Figure 11B).

[0073] Of course, air intake 14 SA and ventilation opening 14 RA The position of the wall penetration hole 90 is determined according to the position of the outdoor unit case 14, but usually some error occurs during construction. Therefore, one of the major features of this disclosure is that the connection paths 26S and 26E are equipped with a mechanism that can absorb this error, that is, the positional displacement in the direction along the rear panel RE of the outdoor unit case 14 (the direction along the XY plane), within a certain range. This certain range is set by the positional displacement absorption mechanisms on the supply side and the exhaust side, which will be described later.

[0074] This misalignment absorption mechanism can absorb the positional errors during construction described above, thereby reducing the requirements for precise positioning during construction. In addition, this misalignment absorption mechanism (structure) is expected to be particularly effective when connecting the outdoor unit case 14 to the sleeve 92 of the building wall 2W by applying a predetermined incline to the supply-side connection passage 26S and the discharge-side connection passage 26E. While both connection passages 26S and 26E are often installed parallel to the horizontal plane (i.e., the installation surface GD), inclines are sometimes actively applied to both connection passages 26S and 26E. For example, there are cases where it is desirable to collect rainwater or condensed water droplets that have entered the packing, etc., on the outdoor unit side or the building side. In such cases, it is generally desirable to apply an incline within the range of a 1 / 50 gradient. In this case, the misalignment absorption mechanism of both connection passages 26S and 26E is configured with the opening and diameter size relationships described later so that it can absorb the amount of misalignment associated with the inclined arrangement.

[0075] As shown in Figure 11A, the supply side connection passage 26S (and the discharge side connection passage 26E) is connected to the air intake port 14 of the rear panel RE. SA (ventilation port 14 RA The device comprises a fixing device 100 as a fixing part fixed around the air intake 14, a position adjustment collar 102 made of metal, plastic or the like, a retaining panel 104 as a retaining part, and an insulating material (gasket) 106 for heat insulation and airtightness. The fixing device 100 is fixed around the air intake 14 SA (ventilation port 14 RA A fixing component BH for screw fastening is attached from both the left and right sides so as to define a rectangular receiving surface 100A around the ). Furthermore, the position adjustment collar 102 has a hollow, cylindrical tube portion 102B with a flange portion 102A. The flange portion 102A has an outer diameter R 102A (It has a fourth size), and the cylindrical portion 102B has an outer diameter R 102B It has (a second size).

[0076] In Figure 11A, the reference numeral PT indicates the putty material.

[0077] Here, air intake 14 SA Radial size R SA(Third size: If the opening is square, the length of its diagonal) is the outer diameter R of the cylindrical part 102B of the position adjustment collar 102. 102B It is set to be a certain amount larger than (R SA >R 102B ).

[0078] To give an example of the size, the inner diameter (R) of the inner cylinder 92B of the sleeve 92. 92B : The first size is the outer diameter (diameter) of the cylindrical part 102B of the position adjustment collar 102. 102B Slightly larger than (for example, 150 mm), and configured so that its cylindrical portion 102B can be inserted into the inner cylinder 92B of the sleeve 92 in a tight fit (i.e., it is compatible. In this embodiment, when both sizes are the same or have a size relationship that allows them to be inserted in a tight fit as described above, the two sizes are said to be compatible with each other). Air intake port 14 SA Radial size R SA For example, the diameter is 200 mm, and the outer diameter size R of the flange portion 102A is... 102A is radial size R SA It is larger than that, for example, with a diameter of 250 mm. The sleeve 92 is inserted through the through-hole 90 in the wall 2W, with insulating material (not shown) placed around it.

[0079] In this example connection structure 1, the supply side (discharge side) connection path is formed by the components: the fixing device 100, the position adjustment collar 102, the retaining panel 104, and the heat insulating packing 106. The position adjustment collar 102 functions as a first movable member on the supply side and as a second movable member on the discharge side.

[0080] Therefore, the sleeve 92 is passed through the through-hole 90 in the wall 2W and the gap between it and the wall 2W is waterproofed. Next, the cylindrical portion 10B of the position adjustment collar 102 is inserted from the inside of the outdoor unit case 14 into the air intake 14. SA It is inserted through and the cylindrical portion 102B extending from the flange portion 102A protrudes from the rear panel RE toward the building. At this time, R 102A >R SADue to the size relationship, the flange portion 102A abuts against the inner surface of the rear panel RE and stops, but the position adjustment collar 102 does not fall out. Furthermore, the position adjustment collar 102 is configured to move vertically, horizontally, or diagonally along the XY plane by a margin determined by the size relationship (the size of "2 × Sd" shown in Figure 11C, which will be described later). Here, the amount of "2 × Sd" is the maximum value of the misalignment adjustment, which corresponds to the predetermined range described above, and will be described later.

[0081] Next, the retaining panel 104 is fitted from the other end of the position adjustment collar 102 toward its flange portion 102A, and the insulation material 106 is also fitted. Then, the other end of the position adjustment collar 102 is inserted inside the tip portion 92E of the sleeve 92, and the frame portion 104A of the retaining panel 104 is fixed to the fixing part BH of the fixing device 100 from both the left and right sides with screws via the connection space GP between the outdoor unit 12 and the building.

[0082] During this fixing process, the installer adjusts the position of the position adjustment collar 102 in the XY plane direction (i.e., the plane direction of the rear panel RE) to the air intake 14, as shown in Figure 11A. SA It can be adjusted within this. This adjustment essentially serves to absorb positional misalignment.

[0083] In other words, as shown in Figure 11C, (I), the air intake port 14 SA We assume an ideal state where there is no positional misalignment during construction, where the center position O of the position adjustment collar 102 coincides with the center position O' along the XY cross-section of the cylindrical portion 102B (O=O'). From this state, as shown in Figures 11C, (II), (III), and (IV), for example, the air intake port 14 SA (ventilation port 14 RA Even if there is a misalignment in the direction along the XY plane of the sleeve 92 inserted into building 2, this will be absorbed as long as it is within the predetermined range of "2 × Sd" as described above. This is due to the radial size of the position adjustment collar 102 and the air intake port 14 SA The radial size of and the outer diameter size R of the flange portion 102A. 102A During R 102A >R SA And R 92B R102B This is because the two are slightly larger, allowing for tighter contact and insertion. Therefore, as shown in Figures 11B and 11C, the position of the position adjustment collar 102 can be adjusted by moving it up, down, left, and right, and the position adjustment collar 102 can be securely inserted into the tip 92E of the sleeve 92. This completes the connection, as shown in Figure 11B.

[0084] In this example connection structure 1, the misalignment absorption mechanism has a position adjustment collar 102, and the child position adjustment collar 102 and the air intake port 14 SA It is composed of the relative sizes of the two dimensions.

[0085] Therefore, the sleeve 92 and air intake 14 are installed in the wall 2W of building 2. SA Even if there is a positional displacement Sd in the lateral X direction and / or height Y direction relative to the outdoor unit installation surface GD, as long as the positional displacement is within the predetermined range of "2 × Sd", the positional displacement absorption mechanism can reliably absorb it. Of course, the same can be applied to positional displacement in the diagonal direction.

[0086] To illustrate this absorption function in detail using Figure 11C, Figures (I), (II), (III), and (IV) show, in that order, a sleeve 92 and an air intake 14 installed in the wall 2W of building 2. SA (and ventilation opening 14 RA Figure 11C shows the cases where there is no positional misalignment between the two parts, where there is a positional misalignment in the lateral direction (X direction), where there is a positional misalignment in the vertical direction (Y direction), and where there is a positional misalignment in the diagonal direction (direction along the XY plane). Although this misalignment is relative, Figure 11C shows the case where the position of the cylindrical part 102B of the position adjustment collar 102 (the center position in the Cartesian coordinate system of the cross section along the XY plane) is misaligned relative to the position of the sleeve 92 (let O be the center position in the Cartesian coordinate system of the cross section along the XY plane). Since this is a relative misalignment, conversely, the air intake port 14 is misaligned relative to the center position O' of the cylindrical part 102B of the position adjustment collar 102. SA (and ventilation opening 14 RA The displacement of the center position O of ) may also be taken.

[0087] Compared to the geometric positional relationship in Figure 11C, (I) where the center positions O and O' of both coincide, in the case of Figure 11C, (II), the position adjustment color 102 is in the horizontal direction (-X direction), "(R SA -R 102B A positional shift occurs by Vx, which corresponds to "(R) / 2=Sd". In other words, the installer can move the position adjustment collar 102 horizontally by Vx to connect the two and maintain that connection. Also, in the case of Figure (III), the position adjustment collar 102 is in the vertical direction (-Y direction), "(R SA -R 102B A positional shift occurs by Vy, which corresponds to "(R) / 2=Sd". In other words, the installer can move the position adjustment collar 102 horizontally by Vy to connect the two and maintain that connection. Furthermore, in the case of Figure (IV), the position adjustment collar 102 is in the diagonal direction (direction along the XY plane), "(R SA -R 102B A positional displacement of Vxy, corresponding to "() / 2 = Sd", occurs. In other words, the installer can move the position adjustment collar 102 diagonally by Vxy to connect the two and maintain that connection. The maximum value of this positional displacement absorption, that is, the predetermined range mentioned above, corresponds to a radial distance of "2 × Sd". Furthermore, by inserting the insulation material 106 as a packing material, not only is the insulation of the connection part improved, but airtightness and watertightness can also be improved.

[0088] In addition, by adjusting the length of the cylindrical portion 102B of the position adjustment collar 102, which is inserted into the tip 92E of the sleeve 92, the Z-axis positional displacement between the outdoor unit case 104 and the building wall 2 (sleeve 92) can also be absorbed within the range of insertion.

[0089] Note: Ventilation opening 14 RA The same connection configuration as described above also applies to this.

[0090] Furthermore, the aforementioned predetermined range is "2 × Sd" for the air intake port 14 SA and ventilation opening 14 RA This is the standard range that applies to both, and the air intake 14 SAWhen applied, it can be defined as the first predetermined range, and for the ventilation opening 14 RA When applied, it can be defined as the second predetermined range. For the air supply opening 14 SA and the ventilation opening 14 RA When both adopt the same connection structure and displacement absorption structure, the first predetermined range = the second predetermined range. Of course, for the air supply opening 14 SA and the ventilation opening 14 RA When the opening sizes of both are made different, it is not necessarily the case that the first predetermined range = the second predetermined range. As different displacement absorption ranges from each other, the first predetermined range and the second predetermined range may be set separately. The method of setting this predetermined range is also similarly applicable to Structure Examples 2 and 3 of the connection path described later.

[0091] Also, in Structure Example 1 described above, contrary to the size relationship described above, the inner diameter of the cylindrical portion 102B of the position adjustment collar 102 may be slightly larger than the outer diameter of the inner cylinder 92B of the sleeve 92, and the inner cylinder 92B of the sleeve 92 may be inserted into the inner cylinder 92B of the sleeve 92 in a close contact state. In this case as well, the two diameter sizes match (are compatible) except for the insertion allowance.

[0092] Furthermore, the sleeve 92 is formed of a simple cylindrical body having a cylindrical space (without an inner cylinder and an outer cylinder), and the cylindrical portion 102B of the position adjustment collar 102 can be inserted into it in a close contact state, or conversely, the tip of the sleeve 92 can be inserted and connected in a close contact state to the inner diameter side of the cylindrical portion 102B. In this case, the shapes of the cross-sections of the cylindrical portion 102B of the position adjustment collar 102 and the sleeve 92 in the lateral direction (the direction along the XY plane in the mounted state) are not limited to circular, and may be polygons such as quadrilaterals and hexagons.

[0093] <Structure Example 2 of the Connection Path> Furthermore, another Structure Example 2 applied to both the supply-side connection path 26S and the discharge-side connection path 26E will be described with reference to FIGS. 12A, 12B, and 12C.

[0094] This structural example 2 is an example in which a position adjustment packing 112 is provided instead of the position adjustment collar 102 according to the above-described structural example 1. This position adjustment packing 112 is a packing material in the shape of a flat plate with a predetermined thickness and a square shape, different from the position adjustment collar 102, and at the center thereof, the outer diameter R of the sleeve 92 92 (for example, 150 mm) is slightly smaller than the diameter R 112A and a hole 112A is formed. Further, the outer dimension 112G of the position adjustment packing 112 is set smaller than those of the pressing panel 104 and the receiving surface 100A of the fixture 100. Therefore, at the time of attachment, the position adjustment packing 112 can be moved within a predetermined range in the vertical, horizontal, and diagonal directions. For this reason, the tip of the sleeve 92 extending from the wall 2W can be press-fitted into the hole 112A of the position adjustment packing 112 to maintain airtightness. Other configurations are the same as those of the structural example 1.

[0095] Therefore, the misalignment absorption mechanism according to this connection structural example 2 has a position adjustment packing 112, and is configured by the size relationship between both sizes of this position adjustment packing 112 and the air supply port 14 SA .

[0096] In this structural example 2, R 92 can be referred to as the first size, R SA as the second size, and R 112A as the third size. Also, in this connection structural example 2, the connection paths on the supply side (discharge side) are configured by the fixture 100, the position adjustment packing 112, and the pressing panel 104, which are components. The position adjustment packing 112 functions as the first movable member on the supply side and as the second movable member on the discharge side. For this reason, as shown in Fig. 12A, the diameter R 104A of the hole 104A of the pressing panel 104 is larger than the outer diameter R 92 of the sleeve 92. Therefore, first, the sleeve 92 is passed through the hole ione="104A, and then the sleeve 92 is press-fitted into the hole 112A of the position adjustment packing 112.With the sleeve 92 applied to the air supply port 14 SA , the tip of the sleeve 92 is at the air supply port 14 SAAdjust the position so that it is as close to the center as possible.

[0097] At this time, the aforementioned sleeve 92 and air intake port 14 SA If there is a misalignment between the position adjustment packing 112 and the air intake port 14, the sleeve 92 will be positioned at a location shifted within a predetermined range vertically, horizontally, or diagonally. SA They are positioned to face the air intake port 14. As a result, the connection state shown in Figure 12B is achieved, and in this state, as shown in Figures 12C, (I), (II), (III), and (IV), even if there is a misalignment between them, the amount of misalignment Sd (maximum value 2 × Sd) is absorbed, and the sleeve 92 and the air intake port 14 SA The opposing state of the sleeve 92 and the air intake 14 is maintained (see Figure 12C, (II) and (III). Therefore, the sleeve 92 and the air intake 14 SA If there is a relative misalignment between the sleeve 92 and the air intake 14 in the wall 2W of building 2, by taking the position of the sleeve 92 as the reference point, the position of the position adjustment packing 112 during construction can absorb the misalignment Vx in the lateral direction (X direction) (Figure 12C, (II)), the misalignment Vy in the vertical direction (Y direction) (Figure 12C, (III)), or the misalignment Vxy in the diagonal direction (diagonal direction along the XY plane) (Figure 12C, (IV)). The amount of misalignment absorbed shown in these figures is Sd, but its maximum value is 2 × Sd. In this way, as in structural example 1, the sleeve 92 and the air intake 14 provided in the wall 2W of building 2 can be absorbed. SA Even if there is a misalignment between the two, the same misalignment absorption function as in structural example 1 can be obtained.

[0098] Note: Ventilation opening 14 RA The same connection configuration applies to this as well.

[0099] <Example of connection path structure 3> Furthermore, another structural example 3, which is applied to both the supply-side connection path 26S and the discharge-side connection path 26E, will be described with reference to Figures 13A, 13B, and 13C.

[0100] As shown in Figure 13A, this structural example 3 employs the aforementioned position adjustment collar 102 and sleeve 92, and is characterized by a structure in which a joint 114 with packing material attached to the inside is used to connect the two. The rest of the structure is the same as that of structural example 1.

[0101] Therefore, the position adjustment collar 102 and retaining panel 104' (with packing material 104B attached to the outdoor unit side) shown in Figure 13A are provided. Here, the air intake port 14 SA diameter R SA , outer diameter R of position adjustment collar 102 102 , diameter R of hole 104A in retaining panel 104' 104A Outer diameter size R of flange part 102A 102A、 And the inner diameter R of the tip of the sleeve 92 92 As an example, R SA =R 104A =R 102 (For example, 200mm), R SA =R 104A =R 102 <R 102A (For example, 250mm) 、 And, R 102 =R 92 They have the following size relationships (all expressed in terms of diameter).

[0102] Note that the first size: R explained in structural example 1 92B , Second size: R 102B , 3rd size: R SA , and the fourth size: R 102A This can also be adopted in this structural example 3. Therefore, the position adjustment collar 102 is set to the air intake port 14, as in the case of structural example 1. SAThe position adjustment collar 102 is then attached and the sleeve 92 is passed through the hole 104A of the retaining panel 104'. Next, the tip of the position collar 102 is inserted inside the tip of the sleeve. Therefore, even when the tips of the position adjustment collar 102 and the sleeve 92 are brought into contact with each other by the tightening joint 114 and the joint 114 is tightened to connect them, the position adjustment collar 102 is moved up, down, left, right or diagonally within a predetermined range to adjust its position, and then the retaining panel 104 is fixed to the fixing device 100 (see Figure 13C). As a result, the position of the position adjustment collar 102 is fixed in a state where the aforementioned positional displacement amount Sd (maximum value of 2 × Sd) is absorbed (adjusted), and the connection shown in Figure 13B is completed.

[0103] In this connection structure example 3, the supply side (discharge side) connection path is formed by the components: the fixing device 100, the position adjustment collar 102, and the retaining panel 104' (insulating packing 104B). The position adjustment collar 102 functions as a first movable member on the supply side and as a second movable member on the discharge side. Therefore, the misalignment absorption mechanism in this connection structure example 3 has a position adjustment collar 102, and this position adjustment collar 102 and the air intake port 14 SA It is composed of the relative sizes of the two parts. Thus, the sleeve 92 and the air intake 14 SA If a relative misalignment occurs between the two points in the vertical, horizontal, or diagonal directions, using the position of sleeve 92 as a reference, the position of position adjustment collar 102 during construction can absorb the misalignment Vx in the horizontal direction (-X direction) (Figure 13C, (II)), the misalignment Vy in the vertical direction (-Y direction) (Figure 13C, (III)), or the misalignment Vxy in the diagonal direction (diagonal direction along the XY plane) (Figure 13C, (IV)). The amount of misalignment absorbed shown in these figures is Sd, and its maximum value is similarly 2 × Sd.

[0104] Thus, even with connection structure example 3, the outdoor unit 12 and the air supply and exhaust sleeves of the building 2 wall 2W can be reliably and airtightly connected to each other while absorbing (adjusting) such misalignment.

[0105] This disclosure provides several examples of connection structures, which can be selected and implemented; however, other displacement absorption functions (mechanisms) may also be provided.

[0106] This also allows for the same configuration as in structural example 1, where the sleeve 92 and air intake 14 are installed in the wall 2W of building 2. SA Even if there is a misalignment between them, the same misalignment absorption function as in structural example 1 can be obtained. RA The same connection configuration as described above also applies to this.

[0107] <Variation> Furthermore, in the structural examples 1 to 3 described above, the connection can be configured to allow tightening of the connection part from both sides in the lateral direction along the XY plane using a tool such as a wrench, via the connection space GP between the outdoor unit case 14 and the building exterior wall 2Wout. One example of this is illustrated in Figure 14. The connection structure in the figure is a modification of the connection structure example 1 described above. In this connection structure, the rear panel RE has an air intake port 14 SA An air intake port 14 is formed. SA A position adjustment collar 202, similar to that described above, is attached to the inside of the rear panel RE via a packing 204 made of insulating material. This position adjustment collar 202 has a flange portion 202A, similar to the case of connection structure example 1, and with the packing 204 in between, the flange portion 202A and the packing 204 are screwed to the inner surface of the rear panel RE by a screw 206. This screw fastening can be tightened by an operator by inserting a tool 208 such as a wrench from the side (along the XY plane) of the narrow workspace GP behind the outdoor unit case 10.

[0108] In this tightening process, in order to obtain the aforementioned misalignment absorption function, the screw diameter R is set at the position of the rear panel RE through which the screw 206 passes. 206 Larger size R HL A through hole HL is drilled. The margin "2Sd (=Sd1+Sd2)" of "through hole HL diameter - screw diameter" gives the maximum amount of displacement absorption (in the radial direction).

[0109] Therefore, the worker inserts the packing 204 into the position adjustment collar 202 and moves the position adjustment collar 202 from the inside of the rear panel RE, that is, from the inside of the outdoor unit case 14 to its air intake 14. SA Insert it into place. At this insertion stage, temporarily fasten the position adjustment collar 202 and packing 204 to create a loose state that allows movement up, down, left, right, and diagonally. This loose state is achieved by using the screw 206 for temporary fastening, and its screw diameter R 206 This is established by the settings.

[0110] Furthermore, the cylindrical portion 202B of the position adjustment collar 202 is moved along the rear panel RE to adjust its position, and then inserted into the sleeve 92 of the building 2 (see Figure 14). This insertion connects the sleeve 92 to the air intake 14 of the rear panel RE. SA Even if there is a misalignment between them, that misalignment is absorbed, and the air passages of both become interconnected. The worker then inserts tool 208 into the workspace GP and tightens screw 206 to create a strong connection that maintains airtightness.

[0111] The connection structure shown in Figure 14 can reliably absorb the aforementioned misalignment and form an airtight connection air passage, while also improving the efficiency of the connection work.

[0112] In addition, in the above-described structural examples 1 to 3 of the connecting passage and their modified forms, the displacement absorption (adjustment) mechanism is located on the supply side, i.e., the air inlet 14 SA On the side of, or the discharge side, i.e., ventilation opening 14 RA It may be provided on either side.

[0113] As described above, according to the example of this disclosure, the whole-building ventilation and air conditioning system 10, as a ventilation and air conditioning system, comprises the following elements as its basic configuration. That is, the whole-building ventilation and air conditioning system 10 comprises a case 14 disposed on the outside of the wall 2W of the building 2, with a workspace GP between it and the outer wall 2Wout of the building 2, and a ventilation and air conditioning unit 18 housed in the case 14, which is responsible for ventilation and air conditioning of the interior 2isd of the building 2, and an outdoor unit 12 formed inside the case 14, which has a supply air passage 16S and an exhaust air passage 16E formed therein for supplying outside air to the interior 2isd of the building 2 and for exhausting the air from the interior, respectively. Furthermore, the system 10 is characterized by comprising: a chamber box 27 that defines a chamber 24 located inside 2Win of the wall 2W facing the outdoor unit 12 via the wall 2 and communicating with the indoor air passages WPhs of the building 2; a supply-side connection passage 26S that provides a hollow air passage and penetrates the wall 2W to connect the supply air passage 16S to the chamber box 27; and a discharge-side connection passage 26E that provides a hollow air passage and penetrates the wall 2W to connect the discharge air passage 16E to the indoor intake port 28.

[0114] Therefore, in the outdoor-type ventilation and air conditioning system 10, the supply air passage 16S and exhaust air passage 16E, defined within the air conditioner case 14 for supplying outside air to the interior of the building 2 and for exhausting the air from the interior, are directly connected from the outdoor unit case 14 to the chamber 24 inside the building 2 via the supply-side connection passage 26S and the exhaust-side connection passage 26E. This chamber 24 is connected to the indoor air passage via a duct (structure). In particular, it is desirable that the supply-side connection passage 26S and the exhaust-side connection passage 26E extend laterally from the rear RE of the outdoor unit case 14, penetrate the building wall 2W, and connect to the chamber 24 and the intake port 28. This allows the supply air passage 16S and the exhaust air passage 16E to communicate with the indoor air passage via the shortest distance and with fewer bends in the air passage. Therefore, both pressure loss and heat loss are reduced, and energy saving can be achieved.

[0115] Furthermore, conventionally, there have been cases where ducts corresponding to the supply-side connection passage 26S and discharge-side connection passage 26E of this disclosure were first made to protrude upward from the top surface of the outdoor unit case, then bent laterally and connected to ducts inside the building. There have also been cases where such ducts were routed under the floor of the building and through the building. Compared to these conventional examples, this invention offers advantages in addition to the energy savings mentioned above. For example, because the duct (connection passage) extends from the back, it matches the exterior and provides a clean and aesthetically pleasing appearance. Also, even if a cover is placed over the upper end of the back, the aesthetic appearance is maintained, and the exposed portion that is exposed to wind and rain is reduced, improving environmental resistance.

[0116] Furthermore, by adopting the rear connection structure described above, installation workers will no longer need to use ladders to work at heights higher than the outdoor unit case. This is because the height of the supply-side connection passage 26S and the discharge-side connection passage 26E will normally be around the height of the worker's face. This also improves work efficiency.

[0117] Furthermore, the supply-side connection path 26S and the discharge-side connection path 26E have a function to absorb misalignment between the outdoor unit's opening and the building's sleeve. Therefore, as mentioned above, if the misalignment is within the normal allowable range, workers can easily absorb the misalignment during installation and make the connection. The degree of misalignment of the sleeve relative to the opening during connection and the state upon completion of the connection can be checked from an inspection hatch inside the room, thus increasing the efficiency of the connection work.

[0118] Furthermore, waterproof and drip-proof components such as gaskets are inserted into the supply-side connection passage 26S and the discharge-side connection passage 26E, ensuring water resistance and moisture resistance.

[0119] Furthermore, since there is a workspace between the outdoor unit case 14 and the building wall 2W that allows workers to reach in, installation is easy and the area exposed to wind and rain can be minimized.

[0120] The ventilation and air conditioning system described above relates to a typical example of this disclosure, and can be implemented with the addition of known elements, insofar as it includes the components essential to this example, and even in such cases, it can be interpreted as falling within the scope of the intent of this disclosure. [Explanation of symbols]

[0121] 2. Buildings (residential residences) 2W wall 2Wout exterior wall 2Win interior wall 2isd Building Interior 2obj Target space (interior of building 2) 2C Structures (walls, etc.) 10. Whole-building ventilation and air conditioning system (ventilation and air conditioning system) 12. Outdoor-type air conditioning unit 14. Outdoor unit case (case) 14 OA outside air intake 14 SA Air supply port 14 RA ventilation hole 14 EA Exhaust vent 14 OUT outside air vent 16S supply air path 16E Exhaust air passage 18. Ventilation and air conditioning equipment 18A air conditioning equipment 18B Ventilation equipment 20. Duct as an example of an indoor airflow path (WPhs) 24 Supply side chamber (space) 27 Chamber Box 26S Supply-side connection path 26E Discharge side connection path 28 Inlet 29 Discharge side chamber 30U First inspection hatch 30L Second inspection hatch 32 Cover 33 filters 34 Grill 37 3D Printed Houses (Buildings) 37A, 37B Building structures (walls, etc.) 90 Through hole 92 sleeves 92E Sleeve tip 100 Fixtures 102 Position adjustment color 102A Flange (base) 102B Cylinder part (pillar part) 104 Pressing panel as a pressing part 104A Hole in the retaining panel 106 Insulation material (gasket) 112 Position adjustment packing 112A Hole in the position adjustment packing 114 Fittings GP gap (work gap) DS Duct Space FR front RE back US top BT bottom GD Case Mounting Surface BH fixed parts Sd displacement absorption amount The predetermined range of misalignment absorption amount "2 × Sd" SK duct space equivalent gap Connection box equivalent to a CB chamber

Claims

1. A case (14) is installed on the outside of the wall (2W) of the building (2) with a working space (GS) between it and the outer wall (2Wout) of the building (2), and a ventilation and air conditioning unit (18) housed in the case (14) is provided, which is responsible for ventilation and air conditioning of the interior (2isd) of the building (2), and an outdoor unit (12) is formed inside the case (14) with a supply air passage (16S) and an exhaust air passage (16E) formed therein for supplying outside air to the interior of the building (2) and for exhausting the air from the interior, respectively, A chamber box (27) is positioned inside the wall (2W) that faces the outdoor unit (12) via the wall (2W), and defines a chamber (24) that communicates with the indoor air passage (DS) of the building (2), The supply air passage (16S) is provided with a hollow air passage and is connected to the chamber box (27) via a supply-side connection passage (26s) that penetrates the wall (2W), The aforementioned exhaust air passage (16E) is provided with a hollow air passage and is connected to the indoor intake port (28) via a discharge-side connecting passage (26E) that penetrates the wall (2W), A ventilation and air conditioning system characterized by having the following features.

2. The chamber box is configured such that a duct communicating with the chamber and forming part of the indoor air passage is connected to it. The ventilation and air conditioning system according to claim 1, characterized in that the chamber is housed in a duct space formed inside the wall.

3. The ventilation and air conditioning system according to claim 2, wherein the chamber box is configured to allow one or more ducts to be connected in at least one direction of the chamber box: upward, downward, left-right, and diagonally.

4. The chamber box and the suction port are located adjacent to each other on the inside of the wall. The aforementioned suction port is provided as an inlet end connected to the aforementioned discharge side connection path. The ventilation and air conditioning system according to feature 2.

5. The aforementioned suction port is located at a position away from the chamber box, serves as an inlet end connected to the discharge side connection path, and is connected to the inlet end by a duct separate from the aforementioned distant position. The ventilation and air conditioning system according to feature 2.

6. The case has a rear panel facing the exterior wall surface of the building, and the rear panel has openings for a supply port and an exhaust port, which are the entrances and exits for the supply air passage and the exhaust air passage. The ventilation and air conditioning system according to any one of claims 1 to 5, characterized in that the supply-side connection passage and the discharge-side connection passage are each connected to the chamber box and the intake port by passing through a through hole formed in the wall of the building.

7. The supply-side connection path is fixed in a penetrating state through the through-hole in the wall and comprises a supply-side sleeve that forms part of the supply air passage and a supply-side connection portion that connects the air passage of the supply-side sleeve to the air intake port of the case in a communication state. The ventilation and air conditioning system according to claim 6, characterized in that the discharge side connection passage is fixed in a penetrating state through the through hole in the wall and comprises a discharge side sleeve that forms part of the discharge air passage and a discharge side connection portion that connects the air passage of the discharge side sleeve and the exhaust port of the case in a communication state.

8. The supply-side connection section is equipped with a supply-side misalignment absorption mechanism that can absorb misalignment, which is the difference in position within a first predetermined range in the vertical, horizontal, or diagonal directions between the supply port and the supply-side sleeve on the rear panel, thereby enabling mutual connection between the supply port and the supply-side sleeve. The ventilation and air conditioning system according to claim 7, characterized in that the discharge side connection portion is equipped with a discharge side misalignment absorption mechanism that can absorb misalignment, which is the difference in position within a second predetermined range in the vertical, horizontal, or diagonal directions between the position of the discharge port on the rear panel and the position of the discharge side sleeve, thereby enabling the discharge port and the discharge side sleeve to be connected to each other.

9. The aforementioned supply-side misalignment absorption mechanism is, From a state where there is no positional misalignment, where the center position of the supply port and the center position of the cross-section of the air passage perpendicular to the axial direction of the supply-side sleeve coincide when viewed along the axial direction, to a state where both center positions are relatively misaligned within the first predetermined range in the vertical, horizontal, or diagonal directions, the supply port and the supply-side sleeve can be connected via the supply-side connection part, and the supply port and the supply-side sleeve are connected in a communicating state, by having a first movable member that is loaded into the supply port and is movable along the surface of the supply port within the first predetermined range. The aforementioned discharge-side misalignment absorption mechanism is, Even when there is no misalignment, from a state where the center position of the discharge port and the center position of the cross-section of the air passage perpendicular to the axial direction of the discharge sleeve coincide when viewed along the axial direction, the discharge side misalignment absorption mechanism has a second movable member that is installed in the discharge port and is movable along the surface of the discharge port within the second predetermined range, and connects the discharge port and the discharge sleeve in a communicating state, so that the discharge port and the discharge sleeve can be connected via the discharge side connection part. The ventilation and air conditioning system according to feature 8.

10. The ventilation and air conditioning system according to claim 8, wherein the supply-side connection and the discharge-side connection each have a hollow connecting pipe and are substantially parallel to the installation surface on which the case is installed.

11. The ventilation and air conditioning system according to claim 8, characterized in that the supply-side connecting pipe and the discharge-side connecting pipe are inclined by a predetermined angle with respect to the installation surface on which the case is installed, assuming that the installation surface is a horizontal plane.

12. The ventilation and air conditioning system according to claim 10 or 11, characterized in that the supply-side connection and the discharge-side connection are arranged such that, when viewed along the front-to-back direction from the case toward the wall, they are positioned in one of the following ways: two positions aligned vertically with respect to the installation surface on which the case is installed, two positions aligned horizontally with respect to the installation surface, or two positions aligned diagonally with respect to the installation surface.

13. The ventilation and air conditioning system according to claim 12, characterized in that the supply-side connection and the discharge-side connection are arranged to take two positions aligned vertically with respect to the installation surface when viewed along the front-to-back direction.

14. The case is formed in a rectangular parallelepiped shape, having an upper panel connected to the upper end of the rear panel and exhibiting an upper surface, and a front panel connected to the front end in the front-rear direction of the upper panel and exhibiting a front surface. The ventilation and air conditioning system according to claim 6, characterized in that at least the front panel is provided with a first inspection opening for maintaining and inspecting the ventilation and air conditioning equipment.

15. The ventilation and air conditioning system according to claim 14, characterized in that an internal circuit breaker is provided in a location inside the outdoor unit that is accessible when a worker opens the first inspection hatch, allowing the power to the ventilation and air conditioning equipment to be directly turned on and off.

16. The chamber box is provided with a second inspection opening that can be opened and closed from the inside of the building. The ventilation and air conditioning system according to any one of claims 7 to 10, wherein when the second inspection opening is opened, the positional relationship between the supply side sleeve, the supply side connection, and the air intake opening can be visually inspected via the supply side sleeve.

17. A chamber grille equipped with a dust filter is detachably installed at the aforementioned intake port. The ventilation and air conditioning system according to claim 16, characterized in that when the chamber grille is removed, the operator is able to visually inspect the positional relationship between the discharge sleeve, the discharge connection, and the discharge port through the discharge sleeve, and the chamber grille is configured to function as a third inspection port.

18. At least one of the first movable member or the second movable member is Having a through-internal space that forms part of the air passage, and having a first size (R) of the transverse cross-section perpendicular to the axial direction of the sleeve. ９２Ｂ A second size (R) that fits ) １０２Ｂ A support column having ) and a first size (R ９２Ｂ The third size (R) of the opening that forms part of the air passage formed in the rear panel is larger than the third size (R) ＳＡ A fourth size (R) that is larger than ) １０２Ａ A connecting member having a base portion having ) A fixing means for fixing the connecting member to the rear panel, with the end of the support portion of the connecting member connected to the sleeve and the base portion adjusted to the position relative to the opening, The ventilation and air conditioning system according to claim 9, characterized by comprising the above.

19. The support column has a hollow space that penetrates both ends in the axial direction as the internal space, and the second size (R １０２Ｂ A cylindrical body having ), and a third size (R) which expands in diameter from one end of the cylindrical body and is able to contact the area around the supply port or discharge port of the back panel. １０２Ａ It has a flange portion having ) The cylindrical body has a tip portion that can be inserted in close contact with the tip portion of the sleeve, or a tip portion that causes the tip portion of the sleeve to be inserted in close contact with the sleeve. The fixing means comprises a retaining panel that presses the flange portion against the rear panel, and a fixing device that fixes the retaining panel to the rear panel. The ventilation and air conditioning system according to claim 18, characterized in that it comprises an insulating material surrounding the tubular body.

20. The support column comprises a cylindrical body having a hollow space that penetrates both ends in the axial direction as its internal space, and a flange portion that expands in diameter from one end of the cylindrical body and abuts against the area around the supply port or discharge port of the rear panel. The fixing means comprises a pressing portion that presses the flange portion against the rear panel, and a fixing portion that fixes the pressing portion to the rear panel. The ventilation and air conditioning system according to claim 18, further comprising a joint that connects the cylindrical body and the sleeve and fastens them together.

21. At least one of the first movable member or the second movable member is A packing material having a hole with a cross-sectional size (R ９２ ), which forms part of the air passage and is smaller than the size (R ＳＡ ) of an opening that forms part of the air passage and is formed in the back panel, and which conforms to the lateral cross-sectional size (R １１２Ａ ) that is orthogonal to the axial direction of the sleeve. With the end of the sleeve passed through the hole in the packing material, the end of the sleeve is inserted into the supply port or discharge port of the rear panel, and fixing means for fixing the first movable member or the second movable member to the rear panel while absorbing any misalignment between the supply port or discharge port and the end of the sleeve, A ventilation and air conditioning system according to any one of claims 9 to 11, characterized by comprising the above.

22. An external ventilation and air conditioning unit comprising: a ventilation and air conditioning device positioned on the outside of a building and responsible for the ventilation and air conditioning of the building; and a case that houses the ventilation and air conditioning device and has a rear panel that faces directly opposite the building wall with a working gap between it and the wall; The ventilation and air conditioning unit comprises an outside air supply duct and an inside air exhaust duct, which project linearly from the front side toward the wall surface, are connected to an installed sleeve that penetrates the wall surface, and respectively form part of the air passage for supplying outside air to the interior of the building and exhausting the interior air, which are performed by the ventilation and air conditioning equipment. A workspace is formed between the rear panel of the case and the wall surface of the building through which the outside air supply duct and the inside air exhaust duct pass. The width of the workspace between the face-to-face area and the wall is set to the minimum size that allows one hand of a worker performing construction and maintenance to fit in from the side. The minimum size mentioned above is 100 to 150 mm, which is set based on the width of a worker's hand. A ventilation and air conditioning system characterized by the following features.

23. An outdoor unit comprising a case positioned outside the building wall with a working space between it and the building's exterior wall, and a ventilation and air conditioning unit housed in this case, which is responsible for ventilation and air conditioning inside the building, wherein the case has supply air passages and exhaust air passages formed inside it for supplying outside air to the interior of the building and for exhausting the air inside the building, respectively, The supply air passage is connected to the supply side pipeline for supplying outside air, which has a hollow air passage and is laid in a penetrating manner through the wall, and the supply side connection part is provided. The aforementioned exhaust air passage is provided with an exhaust-side connection part that connects it to the exhaust-side pipeline for indoor air discharge, which has a hollow air passage and is laid in a manner that penetrates the wall, The case has a rear panel facing the exterior wall surface of the building, and the rear panel has openings for a supply port and an exhaust port, which are the inlets and outlets for the supply air passage and the exhaust air passage. The supply-side connection section includes a supply-side positional misalignment absorption mechanism that absorbs the difference in position between the supply port on the rear panel and the supply-side conduit along the surface of the supply port in the vertical, horizontal, or diagonal directions, thereby enabling communication between the supply port and the supply-side conduit. The ventilation and air conditioning system is characterized in that the discharge side connection portion is equipped with a discharge side position misalignment absorption mechanism that absorbs the difference in position between the discharge port on the rear panel and the position of the discharge side pipeline along the surface of the discharge port in the vertical, horizontal, or diagonal directions, thereby enabling communication between the discharge port and the discharge side pipeline.

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