Dwelling house air-conditioning system of apartment building and renovation method of dwelling house

Abstract

To construct an air-conditioning system including a type-1 ventilation system without newly forming an opening at a structure which faces outdoors such as an outer wall when renovating a dwelling house of an apartment building.SOLUTION: An air-conditioning system 10 is arranged by renovating a dwelling house 2 of an apartment building 1. The air-conditioning system 10 is a complex ventilation system including a type-1 ventilation system 10a and a type-3 ventilation system 10c. The type-1 ventilation system 10a includes an air adjustment unit 10 composed of a total heat exchanger, and a type-1 exhaust duct 31 extending from an exhaust port 15 of the air adjustment unit 10. The type-3 ventilation system 10c includes a ventilation unit 32 of a ventilation area 2c of the dwelling house 2, and a type-3 exhaust duct 33 extending from the ventilation unit 32. The type-1 exhaust duct 31 and the type-3 exhaust duct 33 are merged with each other at a merging unit 40. A common exhaust duct 34 extending from the merging unit 40 is connected to an existing ventilation port 3c of a structure 3 which faces outdoors.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air conditioning system that adjusts the air environment in a dwelling unit of an apartment building and a method for renovating the dwelling unit, and in particular to an air conditioning system and a renovation method suitable for renovating a dwelling unit of an apartment building. [Background technology]

[0002] In recent years, there has been an increase in renovating existing homes in order to make the most of them. When constructing a new central air conditioning system, including a Type 1 ventilation system, during renovation, it may be necessary to create new openings in the exterior walls for intake or exhaust.

[0003] On the other hand, when renovating a dwelling unit in an apartment building, creating new openings in the exterior walls of the dwelling unit is generally not permitted due to the possibility of affecting the structural strength of the apartment building. For this reason, it was often impossible to build a Type 1 ventilation system, and it was necessary to use a Type 3 ventilation system that utilized the existing vents.

[0004] Patent Document 1 discloses a total heat exchanger for a first-class ventilation system. The total heat exchanger takes in air from outdoors and supplies it indoors, and also takes in air from indoors and exhausts it outdoors. Furthermore, heat is exchanged between the air from outdoors and the air from indoors inside the total heat exchanger. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2017-009259 A Summary of the Invention [Problem to be solved by the invention]

[0006] If the ventilation system for the dwelling units in an apartment building is a Type 3 ventilation system, the exhaust creates negative pressure inside the room, which can make it cold in winter as outside air flows in and pressure can be applied when opening and closing the doors, compromising comfort even after renovations. If permission is obtained from the apartment building's management association, structural calculations can be performed and an opening can be made in the exterior wall to create a Type 1 ventilation system, but in reality it is almost impossible to obtain permission. Even if permission is obtained, the cost and effort of structural calculations and opening construction will be incurred. In consideration of such circumstances, the present invention aims to make it possible to construct an air conditioning system including a type 1 ventilation system, for example, when renovating a dwelling unit in an apartment building, without having to create a new opening in a structural body facing the outdoors, such as the exterior wall of the dwelling unit. [Means for solving the problem]

[0007] In order to solve the above problems, the system of the present invention is an air conditioning system for a residence installed in a residence of an apartment building, comprising: A first type ventilation system including an air conditioning unit that draws in air from the outdoors and distributes and supplies air to the inside of the dwelling unit, and also draws in air from the inside of the dwelling unit and exhausts it from an exhaust port, and a first type exhaust duct extending from the exhaust port; A third-type ventilation system including a ventilation unit in a ventilation area of ​​the dwelling unit and a third-type exhaust duct extending from the ventilation unit; a joining unit that joins the first type exhaust duct and the third type exhaust duct; a common exhaust duct extending from the junction unit to a ventilation opening of a structure facing the exterior of the dwelling unit; The present invention is characterized by comprising: According to this system, one ventilation opening in the structure facing the outside of the dwelling unit can be used both as an outdoor exhaust opening for the first type ventilation system and as an outdoor exhaust opening for the third type ventilation system. Therefore, the number of outdoor exhaust openings in the entire air conditioning system can be reduced. This means that, for example, when renovating a dwelling unit in an apartment building, it is not necessary to form a new outdoor exhaust opening in the structure facing the outside of the dwelling unit. Examples of structures facing the outside of the dwelling unit include exterior walls, as well as exterior beams and exterior columns.

[0008] Preferably, the junction unit includes a first type exhaust inlet connected to the first type exhaust duct, a third type exhaust inlet connected to the third type exhaust duct, and a common exhaust outlet connected to the common exhaust duct, the first type exhaust inlet, the third type exhaust inlet and the common exhaust outlet being connected to each other at the junction, and a third type check valve is provided in the third type exhaust inlet. A Class 3 check valve prevents outdoor exhaust from a Class 1 ventilation system from flowing into a Class 3 exhaust duct.

[0009] The method of the present invention is a method for renovating a dwelling unit in an apartment building, comprising the steps of: installing a first type ventilation system in the dwelling unit, the first type ventilation system including an air conditioning unit and a first type exhaust duct extending from the air conditioning unit; A step of merging a third-class exhaust duct of a third-class ventilation system extending from a ventilation unit in a ventilation area of ​​the dwelling unit and the first-class exhaust duct via a merging unit; A step of connecting a common exhaust outlet portion following the junction portion of the junction unit and an existing opening of a structure facing the outdoors of the dwelling unit by a common exhaust duct; The present invention is characterized by comprising: The existing opening can be, for example, an existing ventilation opening that was already present when the apartment building was newly constructed (before renovation). This means that when renovating a dwelling unit in an apartment building, it is not necessary to form a new opening for outdoor exhaust in the structural body such as an exterior wall. Therefore, there is no need to request permission from the management association of the apartment building to construct an opening in the structural body such as an exterior wall. In addition, there is no need to consider the impact on the building frame when an opening is formed in the structural body such as an exterior wall, which can reduce the cost and effort of structural calculations and opening construction.

[0010] Preferably, the step of installing the first type ventilation system includes a step of connecting another existing opening in the structure of the dwelling unit facing the outdoors to the outdoor intake port of the air conditioning unit by an outdoor intake duct. The other existing openings can be ventilation openings or air conditioner outdoor unit installation openings that were already present in the apartment building when it was first built (before renovation). In other words, if there are at least two existing openings, it is possible to reliably eliminate the need to create new openings in the structure, such as the exterior wall, during renovation. Effect of the Invention

[0011] According to the present invention, for example, when renovating a dwelling unit in an apartment building, an air conditioning system including a first-class ventilation system can be constructed without forming a new opening in a structural body facing the outdoors, such as an exterior wall. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a plan view showing a dwelling unit in an apartment building in which an air conditioning system according to the present invention has been installed through renovation. [Diagram 2] FIG. 2 is a plan view of the junction unit and its surroundings in the air conditioning system. [Diagram 3] 3(a) and 3(b) are plan views showing modified examples of the joining unit. [Figure 4] 4(a) to 4(c) are plan views showing modified examples of the joining unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, one embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, an air conditioning system 10 according to the present invention has been installed through renovation in a dwelling unit 2 in an apartment building 1. The air conditioning system 10 includes a first type ventilation system 10a, a third type ventilation system 10c, and a junction unit 40 that joins these two ventilation systems 10a, 10c.

[0014] The first type ventilation system 10a includes an air conditioning unit 11, an outdoor intake duct 20, a plurality of supply air ducts 21, 22, 23, 24, an indoor intake duct 30, and a first type exhaust duct 31. The air conditioning unit 11 is composed of an intake fan 11a, an exhaust fan 11b, and a total heat exchanger including a heat exchanger 11c. The housing of the air conditioning unit 11 is provided with an outdoor intake port 12, a plurality of supply air ports 13, an indoor intake port 14, and an exhaust port 15. The air conditioning unit 11 is installed on the ceiling of, for example, a corridor in the dwelling unit 2, but the installation location of the air conditioning unit 11 is not limited thereto.

[0015] The downstream end of the outdoor intake duct 20 is connected to the outdoor intake port 12 of the air conditioning unit 11. The outdoor intake duct 20 extends so as to connect the outdoors and the air conditioning unit 11. The upstream end of the outdoor intake duct 20 faces the outdoors by being connected to an opening 3a (another existing opening) in the outer wall 3 (a structure facing the outdoors) of the dwelling unit 2 via a sleeve 61. The sleeve 61 is fitted into the opening 3a. A hood 62 is provided at the outdoor end of the sleeve 61. The opening 3a can be, for example, an existing opening such as a ventilation opening or an air conditioner outdoor unit mounting port that is present when the apartment building 1 is first constructed.

[0016] The upstream ends of air supply ducts 21-24 are connected to the respective air supply ports 13 of the air conditioning unit 11. The air supply ducts 21-24 each extend to a corresponding air-conditioned area 2a. Examples of the air-conditioned area 2a include a living room and other rooms. An air outlet 25 is provided in the ceiling of each air-conditioned area 2a. The downstream ends of the air supply ducts 21-24 are connected to the air outlet 25.

[0017] The downstream end of an indoor air intake duct 30 is connected to the indoor air intake port 14 of the air conditioning unit 11. The upstream end of the indoor air intake duct 30 is connected to an air intake port 35 of the first type ventilation area 2b of the dwelling unit 2. The first type ventilation area 2b is, for example, a toilet.

[0018] The upstream end of a first type exhaust duct 31 is connected to the exhaust port 15 of the air conditioning unit 11. The first type exhaust duct 31 extends from the air conditioning unit 11 to the junction unit 40.

[0019] The third type ventilation system 10c includes a ventilation unit 32 and a third type exhaust duct 33. The ventilation unit 32 is provided on the ceiling of the third type ventilation area 2c of the dwelling unit 2. The third type ventilation area 2c is, for example, a bathroom. The upstream end of the third type exhaust duct 33 is connected to the ventilation unit 32. The third type exhaust duct 33 extends from the ventilation unit 32 to the junction unit 40.

[0020] The first type exhaust duct 31 and the third type exhaust duct 33 are joined by a junction unit 40. That is, the first type ventilation system 10a and the third type ventilation system 10c are joined at the junction unit 40. The junction unit 40 is disposed in the attic of the dwelling unit 2 or in the space between floors.

[0021] As shown in Fig. 2, the confluence unit 40 includes a straight exhaust inlet / outlet pipe 40a and a diagonal third-type exhaust introduction section 43, and is formed into a generally Y-shaped pipe in a plan view. One end (left side in Fig. 2) of the exhaust inlet / outlet pipe 40a constitutes a first-type exhaust introduction section 41. The other end (right side in Fig. 2) of the exhaust inlet / outlet pipe 40a constitutes a common exhaust introduction section 44. The axis L of the first-type exhaust introduction section 41 41 and the axis L of the common exhaust outlet portion 44 44 are arranged in a straight line relative to each other.

[0022] The third exhaust introduction section 43 crosses the middle part of the exhaust introduction outlet pipe 40a at an angle. The middle part of the exhaust introduction outlet pipe 40a constitutes a junction section 45 where the first exhaust introduction section 41 and the third exhaust introduction section 43 join together. The axis L of the third exhaust introduction section 43 43 is the axis L of the first exhaust gas introduction section 41. 41 and the angle θ 43 is preferably θ 43 = 30° to 60°, more preferably θ 43= 45°. A common exhaust introduction section 44 extends from the junction section 45.

[0023] The downstream end of the first type exhaust duct 31 is connected to the first type exhaust introduction section 41. A first type check valve 51 is provided inside the first type exhaust introduction section 41. The first type check valve 51 allows air to flow (forward flow) from the first type exhaust duct 31 side to the junction section 45 side, and prevents air from flowing (backflow) from the junction section 45 side to the first type exhaust duct 31 side.

[0024] The downstream end of the third type exhaust duct 33 is connected to the third type exhaust introduction section 43. A third type check valve 53 is provided inside the third type exhaust introduction section 43. The third type check valve 53 allows air to flow (forward flow) from the third type exhaust duct 33 side to the junction section 45 side, and prevents air from flowing (backflow) from the junction section 45 side to the third type exhaust duct 33 side.

[0025] As shown in Fig. 2, the upstream end of the common exhaust duct 34 is connected to the common exhaust outlet 44 following the junction 45. As shown in Fig. 1, the common exhaust duct 34 extends from the junction unit 40 to the exterior wall 3 of the dwelling unit 2. The downstream end of the common exhaust duct 34 faces the outdoors by being connected to an opening 3c in the exterior wall 3 via a sleeve 63. The sleeve 63 is fitted into the opening 3c. A hood 64 is provided at the outdoor end of the sleeve 63. One of the existing openings, such as a ventilation opening, that has been present since the apartment building 1 was newly constructed (before renovation) is used as the opening 3c.

[0026] When renovating the dwelling unit 2 of the apartment building 1, the air conditioning system 10 is constructed as follows. An air conditioning unit 11 is installed at a predetermined location in the dwelling unit 2. Moreover, air supply ducts 20-24 and exhaust ducts 30, 31 are piped and connected to the air conditioning unit 11, thereby constructing a first type ventilation system 10a. At this time, the outdoor intake port 12 and the opening 3a facing the outdoors are connected by the outdoor intake duct 20. Since an existing ventilation opening or the like can be used as the opening 3a, there is no need to form a new opening for outdoor intake in the exterior wall 3 during renovation.

[0027] Furthermore, a ventilation unit 32 is installed in the ventilation area 2c, and a third-class exhaust duct 33 is laid, thereby constructing a third-class ventilation system 10c. Furthermore, a junction unit 40 is installed on the exhaust duct piping path, and the first type exhaust duct 31 and the third type exhaust duct 33 are joined together via the junction unit 40. The common exhaust outlet 44 of the junction unit 40 and the opening 3c facing the outdoors are connected by a common exhaust duct 34. Because an existing opening can be used as the opening 3c, there is no need to newly form an opening for exhausting to the outdoors in the exterior wall 3 during renovation.

[0028] In short, in constructing the air conditioning system 10, as long as there are at least two existing openings such as ventilation openings in the exterior wall 3, there is no need to form a new opening in the exterior wall 3. Therefore, there is no need to request permission from the management association of the apartment building to construct an opening in the exterior wall 3. In addition, there is no need to consider the impact on the building frame when an opening is formed in the exterior wall 3, which can save the cost and effort of structural calculations and opening construction.

[0029] In the renovated dwelling unit 2, the air conditioning system 10 operates as follows. The air conditioning unit 11 is preferably operated at all times. When the air conditioning unit 11 is operating, it draws in air from the outdoors via the outdoor intake duct 20 by driving the intake fan 11a, and distributes and supplies the outdoor air to each air-conditioned area 2a in the dwelling unit 2 via the intake ducts 21-24. In addition, it draws in air from a ventilation area 2b (e.g., a toilet) in the dwelling unit 2 via the indoor intake duct 30 by driving the exhaust fan 11b, and exhausts the indoor air via the first-class exhaust duct 31. In the heat exchange section 11c in the air conditioning unit 11, heat is exchanged between the outdoor air and the indoor air. Furthermore, the air conditioning unit 11 may have a function of cooling / heating the air within the dwelling unit 2 and adjusting the humidity.

[0030] As shown in FIG. 2, indoor air that has passed through the first-class exhaust duct 31 (hereinafter referred to as "first-class exhaust air a1") passes through the first-class check valve 51 in the first-class exhaust inlet 41 of the junction unit 40 and flows to the junction 45. At this time, the third-class check valve 53 prevents the first-class exhaust air a1 from flowing into the third-class exhaust inlet 43. This prevents the first-class exhaust air a1 from flowing back into the dwelling unit 2 through the third-class exhaust duct 33 even when the ventilation unit 32 is stopped. When the ventilation unit 32 is stopped, the first-class exhaust air a1 is discharged alone from the junction 45 through the common exhaust outlet 44 and the common exhaust duct 34 to the outdoors.

[0031] The ventilation unit 32 may be operated only when necessary by an on / off operation, or may be operated constantly. When in operation, the ventilation unit 32 draws in indoor air from the ventilation area 2c (e.g., the bathroom) and exhausts it through the third-class exhaust duct 33.

[0032] 2, indoor air that has passed through the third-type exhaust duct 33 (hereinafter referred to as "third-type exhaust air a3") passes through the third-type check valve 53 in the third-type exhaust inlet section 43 of the junction unit 40, and is merged with the first-type exhaust air a1 at the junction section 45. At this time, the first-type check valve 51 prevents the third-type exhaust air a3 from flowing into the first-type exhaust inlet section 41 and ultimately the first-type exhaust duct 31. This makes it possible to prevent the third-type exhaust air a3 from flowing back into the dwelling unit 2 via the first-type exhaust duct 31, even if the air-conditioning unit 11 is stopped.

[0033] When the air conditioning unit 11 and the ventilation unit 32 are operating simultaneously, the first type exhaust air a1 and the third type exhaust air a3 are joined and mixed in the junction 45. As shown in Fig. 2, the mixed exhaust air a (=a1+a3) passes from the junction 45 through the common exhaust outlet 44 and the common exhaust duct 34, and is exhausted from the opening 3c in the exterior wall 3 to the outdoors.

[0034] According to the air conditioning system 10, a composite ventilation system of the first type ventilation system 10a and the third type ventilation system 10c can be used. By combining the third type ventilation system 10c with the first type ventilation system 10a instead of using it alone, the inside of the dwelling unit 2 can be made closer to an equal pressure state with the outside. This can eliminate or reduce problems such as the tendency to get cold due to the inflow of outside air in winter and pressure when opening and closing doors. As a result, it is possible to ensure a comfortable living environment through renovation.

[0035] Next, another embodiment of the present invention will be described. In the following embodiment, the same components as those in the above-described embodiment will be denoted by the same reference numerals in the drawings and the description thereof will be omitted. The joining unit is not limited to the structure shown in FIG. 2, and may have any structure as long as it joins the first type exhaust duct and the third type exhaust duct and connects them to the common exhaust duct.

[0036] The confluence unit 40B shown in FIG. 3(a) has a Y-shaped tubular structure. The three exhaust gas inlet / outlet sections 41, 43, and 44 of the confluence unit 40B communicate with each other at an angle at the central confluence section 45. The axis L of the first exhaust gas inlet section 41 is 41 and the axis L of the third exhaust gas introduction section 43 43 The axis L of the common exhaust outlet portion 44 44 The first exhaust gas introduction section 41 is symmetrical with respect to the axis L 41 and the axis L of the third exhaust gas introduction section 43 43 The angle θ formed by these is preferably θ=60° to 120°, and more preferably θ=about 90°.

[0037] The confluence unit 40C shown in FIG. 3(b) has a generally Y-shaped tubular structure, and the axis L of the first exhaust gas introduction section 41 is 41 and the axis L of the third exhaust gas introduction section 43 43 and the axis L of the common exhaust outlet portion 44. 44 The first type exhaust inlet 41 is connected to the common exhaust outlet 44 at a relatively gentle angle θ1, and the third type exhaust inlet 43 is connected to the common exhaust outlet 44 at a relatively steep angle θ3.

[0038] As shown in FIG. 4, confluence units 40D to 40F may each have a box-shaped or chamber-shaped confluence portion. The junction of the junction unit 40D shown in Fig. 4(a) is configured by a junction box 46 that is roughly rectangular in plan view. The junction box 46 has an inlet side 46a, an outlet side 46c opposite the inlet side 46a, and side surfaces 46b on both sides. The corners of the outlet side 46c and each of the side surfaces 46b on both sides are cut obliquely to form oblique sides 46d.

[0039] On the introduction side surface 46a, a port 71p constituting a first type exhaust introduction section and a port 73p constituting a third type exhaust introduction section are provided side by side so as to protrude from the introduction side surface 46a. Although not shown in the figures, check valves 51, 53 may be provided on the exhaust introduction ports 71p, 73p, respectively.

[0040] A port 74 that constitutes a common exhaust outlet portion is provided so as to protrude from the outlet side surface 46c. The merging unit 40D is aligned with the axis L of the common exhaust outlet portion 44. 44 However, this is not limiting and may be asymmetric. 41 ,L 44 Distance D1 between axis L 43 ,L 44 The distances D1 and D3 between the two are equal (D1=D3), but this is not limited to this.<D3でもよく、D1> D3 is also fine.

[0041] The junction unit 40E shown in Fig. 4(b) has a junction box 47. The junction box 47 is formed in an external shape similar to that of the junction box 46 in Fig. 4(a) and has a groove-shaped partition portion 47g. The partition portion 47g is aligned along the axis L from the introduction side surface 47a of the junction box 47 to the center. 44 The portion of the junction box 47 from the inlet side surface 47a to the center is partitioned by a partition 47g into a first type exhaust inlet passage 47e and a third type exhaust inlet passage 47f.

[0042] A first type exhaust introduction port 71p is provided on one surface portion (the lower side in FIG. 4(b)) of the introduction side surface 47a, with a partition portion 47g in between, and a third type exhaust introduction port 73p is provided on the other surface portion (the upper side in FIG. 4(b)). The first type exhaust introduction port 71p and the first type exhaust introduction passage 47e are connected to each other to form the first type exhaust introduction section 71. The third type exhaust introduction port 73p and the third type exhaust introduction passage 47f are connected to each other to form the third type exhaust introduction section 73.

[0043] Although not shown, the first type check valve 51 may be provided in the first type exhaust introduction port 71p or the first type exhaust introduction passage 47e. The third type check valve 53 may be provided in the third type exhaust introduction port 73p or the third type exhaust introduction passage 47f.

[0044] A junction section 47h is formed in the junction box 47 from the center to the outlet side surface 47c. A common exhaust outlet port 74 is provided in the outlet side surface 47c.

[0045] In the junction unit 40F shown in Fig. 4(c), a junction section is formed by a junction box 48 having a triangular shape in a plan view. The junction box 48 has three side faces 48a, 48b, and 48c. The junction box 48 has an equilateral triangular shape in a plan view, but may have an isosceles triangular shape with the two inlet side faces 48a, 48b as a pair of hypotenuses and the outlet side face 48c as a base in a plan view, or may have a scalene triangular shape in a plan view.

[0046] A first type exhaust inlet port 71p is provided so as to protrude from the inlet side surface 48a. A third type exhaust inlet port 73p is provided so as to protrude from the inlet side surface 48b. A common exhaust outlet port 74 is provided so as to protrude from the outlet side surface 48c.

[0047] The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, an existing third-class ventilation system 10b may be used, or the first-class ventilation system 10a may be connected to an existing third-class exhaust duct via a junction unit 40 in the middle of the duct. Either the air conditioning unit 11 or the ventilation unit 32 may be selectively operated by an operation switching operation. The first type check valve 51 may be omitted. Furthermore, both the first type check valve 51 and the third type check valve 53 may be omitted. The structural body having the existing openings 3a, 3c and facing the outdoors is not limited to the exterior wall 3, but may be an exterior beam or an exterior column. As a modified example of the Y-pipe structure confluence unit 40 (Figure 2), the third type exhaust inlet section 43 and the common exhaust outlet section 44 may be connected in a straight line to form a straight exhaust inlet / outlet pipe 40a, and the first type exhaust inlet section 41 may intersect the exhaust inlet / outlet pipe 40a at an angle. As a modified example of the confluence unit 40C (FIG. 3(b)), the axis L of the third exhaust gas introduction section 43 is 43 is the axis L of the common exhaust outlet portion 44. 44 The angle θ3 between the first exhaust gas introduction section 41 and the axis L 41 The axis L of the common exhaust outlet portion 44 is 44 It may be smaller than the angle θ1 (θ3<θ1). [Industrial Applicability]

[0048] The present invention is applicable to renovation work for each dwelling unit in an apartment building. [Explanation of symbols]

[0049] 1. Apartment Building 2 Dwellings 2a Air-conditioned area 2b Type 1 ventilation area 2c Type 3 ventilation area (ventilation area) 3 Exterior walls (structures facing the outdoors) 3a Opening for outdoor intake (other existing openings) 3c Opening for outdoor exhaust (existing opening) 10. Air Conditioning System 10a Type 1 ventilation system 10c Type 3 ventilation system 11 Air conditioning unit 11a Intake fan 11b Exhaust fan 11c Heat exchange section 12 Outdoor intake port 13 Air supply port 14 Indoor air intake port 15 Exhaust port 20 Outdoor intake duct 21, 22, 23, 24 Air supply duct 25 Air outlet 30 Indoor air intake duct 31 Type 1 exhaust duct 32 Ventilation unit 33 Type 3 exhaust duct 34 Common exhaust duct 35 Air Intake 40 Merging Unit 40B, 40C Asymmetrical merging unit 40D~40F Box-shaped merging unit 41 First-class exhaust inlet 43 Type 3 exhaust inlet 44 Common exhaust outlet 45 Junction 46 Box-shaped junction 47 Confluence Box 47e Class 1 exhaust inlet 47f Class 3 exhaust inlet 47h Junction 48 Confluence Box 51 Class 1 check valve 53 Class 3 check valve 61,63 Sleeve 62,64 Food 71 First-class exhaust inlet 71p First-class exhaust inlet port (First-class exhaust inlet) 73 Type 3 exhaust intake 73p 3rd class exhaust inlet port (3rd class exhaust inlet) 74 Common exhaust outlet port (common exhaust outlet part) A1 Type 1 exhaust air A3 Type 3 exhaust air a Exhaust air

Claims

1. An air conditioning system for a residence installed in a residence of an apartment building, a first type ventilation system including an air conditioning unit that draws in air from the outdoors and distributes and supplies air to the inside of the dwelling unit and also draws in air from the inside of the dwelling unit and exhausts it from an exhaust port, and a first type exhaust duct extending from the exhaust port; A third-type ventilation system including a ventilation unit in a ventilation area of ​​the dwelling unit and a third-type exhaust duct extending from the ventilation unit; a joining unit that joins the first type exhaust duct and the third type exhaust duct; a common exhaust duct extending from the junction unit to a ventilation opening of a structure facing the exterior of the dwelling unit; An air conditioning system for a residence in an apartment building, comprising:

2. 2. The air conditioning system for a residence as described in claim 1, wherein the confluence unit includes a first type exhaust air inlet connected to the first type exhaust duct, a third type exhaust air inlet connected to the third type exhaust duct, and a common exhaust air outlet connected to the common exhaust duct, the first type exhaust air inlet, the third type exhaust air inlet, and the common exhaust air outlet being connected to each other at the confluence portion, and a third type check valve is provided in the third type exhaust air inlet.

3. A method of renovating a dwelling unit in an apartment building, comprising: installing a first type ventilation system in the dwelling unit, the first type ventilation system including an air conditioning unit and a first type exhaust duct extending from the air conditioning unit; A step of merging a third-class exhaust duct of a third-class ventilation system extending from a ventilation unit in a ventilation area of ​​the dwelling unit and the first-class exhaust duct via a merging unit; A step of connecting a common exhaust outlet portion following the junction portion of the junction unit and an existing opening of a structure facing the outdoors of the dwelling unit by a common exhaust duct; A method for renovating a dwelling unit in an apartment building, comprising:

4. The renovation method described in claim 3, wherein the installation process of the first type ventilation system includes a process of connecting another existing opening in the structure of the dwelling unit facing the outdoors to the outdoor intake port of the air conditioning unit by an outdoor intake duct.

Images