Housing ventilation and air conditioning system

Abstract

To construct a system that enables a simple overall air conditioning of each floor simultaneously with a first-type 24-hour ventilation system for housing, where the supply air duct is shortened to eliminate problems of duct contamination.SOLUTION: A first-type 24-hour ventilation device is installed in a passage room, and the ventilation device is provided with an indoor air supply port. Fresh air is supplied from outdoors into the passage room with heat exchange. Furthermore, an air conditioner is installed in the passage room to adjust the air temperature. Air flows from the passage room into each room, and exhaust air from indoor exhaust ports installed in each room returns through ducts to the ventilation device, undergoes heat exchange, and is discharged outdoors.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This invention relates to a first-class 24-hour ventilation system for residential buildings and an air conditioning system for each floor. [Background technology]

[0002] Homes require the ability to maintain a comfortable indoor temperature using air conditioners and other air conditioning systems, and highly airtight and insulated homes can easily maintain that temperature. However, a certain amount of ventilation with the outdoors is necessary to prevent carbon dioxide buildup and sick building syndrome. Ventilation systems that actively use fans to supply and exhaust air are called Type 1 ventilation, and can maintain an appropriate amount of ventilation at a steady rate. Furthermore, Type 1 ventilation also includes heat exchange ventilation, which transfers heat between the air exhausted from the room to the outside and the air supplied from the outside to the room. This allows the energy of the conditioned air to be reused and sent indoors, effectively reducing the energy required for air conditioning.

[0003] A typical residential heat exchange ventilation system, as shown in Figure 1, uses ducts to supply and exhaust air from a single heat exchange ventilation unit 1 to each room. It includes an intake air duct (OA duct 12) that connects the outdoor intake air vent 2 to the ventilation unit 1 and sends intake air from outdoors, an intake air duct (SA duct 13) that connects the ventilation unit 1 to the indoor intake air vents 3 in each room R and sends intake air, an exhaust duct (RA duct 14) that connects the indoor exhaust vents 4 in each room R to the ventilation unit 1 and sends exhaust air, and an exhaust duct (EA duct 15) that connects the ventilation unit 1 to the outdoor exhaust vent 5 and discharges exhaust air outdoors. These ducts have a long, winding accordion structure, and over time, atmospheric dust and mold spores accumulate inside the ducts. If mold or bacterial contamination is present in the air intake duct in particular, it will continue to be supplied indoors, adversely affecting the health of the residents. Because the ducts are long and thin and winding, cleaning the inside of the ducts is difficult, and replacing them is very expensive. This makes them difficult to deal with, and raises questions about whether they can be used safely over the long term. On the other hand, even if the inside of an exhaust duct is slightly contaminated, the substances generated from it are simply discharged outdoors, so it is not a major problem.

[0004] Alternatively, instead of using ducts, there are systems that install ventilation and air conditioning equipment in the underfloor or attic spaces, ventilating and conditioning these spaces and supplying air from these spaces to each room. However, these spaces have many partitions that tend to stagnate, requiring strong wind power, and furthermore, maintenance such as overall cleaning of these spaces is difficult because they are not easily accessible to people.

[0005] Another method is to install ventilation equipment and air conditioning units in every room that intake and exhaust air to the outdoors. This does not require ducts, but outdoor noise will enter the rooms directly through the ventilation openings that supply and exhaust air to the outdoors. It also requires multiple ventilation equipment and air conditioning units for each room, which is costly.

[0006] In a highly airtight and insulated home, one or two air conditioning units per floor are sufficient to cover all rooms on that floor (i.e., air conditioning for the entire floor), and having multiple air conditioning units is overkill, making temperature control in small rooms more difficult. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent 5094894 [Patent Document 2] Patent Publication No. 2012-21758 [Patent Document 3] Patent 6211675 Summary of the Invention [Problem to be solved by the invention]

[0008] The objective is to build a first-class 24-hour ventilation system and a whole-floor air conditioning system for a house, without direct ventilation between each room and the outdoors, without using long intake ducts, and without using underfloor or attic spaces as ventilation spaces, in order to maintain the purity of the supplied air over the long term and to improve cost, maintenance, and soundproofing performance. [Means for solving the problem]

[0009] An indoor space such as a hallway or entrance hall that connects rooms and serves as a passageway for people to move between them is called a passage room. For example, in a home with a floor plan where a hallway continues from the entrance hall and each room is connected to the hallway, the entrance hall and hallway are passage rooms. In a floor plan where there is no hallway and the living room and each room are connected to a large entrance hall, the entrance hall is a passage room. In a floor plan where there is no hallway and each room is connected to the living room, the living room serves as both a passage room and a living room.

[0010] In a passageway, a 24-hour heat exchange ventilation system is installed in the room, attic, or under the floor in a location close to the outdoors, such as an entrance hall, and a duct (OA duct) connects the outdoor air intake to the 24-hour heat exchange ventilation system. Either the indoor air intake is directly connected to the 24-hour heat exchange ventilation system, or the indoor air intake is installed in the passageway via a short duct less than 2 meters from the 24-hour heat exchange ventilation system. The outdoor air is drawn into the 24-hour ventilation system from the outdoor air intake vent by the intake fan through the OA duct, where it is heat exchanged before being supplied to the passageway. In addition, an air conditioner is installed in the passage room to regulate the temperature inside the passage room. Between the passage room and each room there is a ventilation passage such as an undercut in the door or a louver, and air flows from the passage room into each room. Each room in the building is equipped with an indoor exhaust vent, which is connected by a duct (RA duct) to a 24-hour heat exchange ventilation system, and from the 24-hour heat exchange ventilation system by a duct (EA duct) to an outdoor exhaust vent. The exhaust air from each room is drawn into the 24-hour heat exchange ventilation system by the exhaust fan from the indoor exhaust port through the RA duct and into the 24-hour heat exchange ventilation system. After heat exchange takes place inside the 24-hour heat exchange ventilation system, the exhaust air passes through the EA duct from the 24-hour heat exchange ventilation system and is discharged outdoors through the outdoor exhaust port.

[0011] This allows ventilation throughout each floor, but if the house's airtightness is poor, adequate ventilation cannot be achieved, so high airtightness is necessary.Furthermore, if the house's insulation performance is poor, the low air volume of ventilation 24 hours a day will not be enough to maintain adequate air conditioning, so high insulation is necessary. [Effects of the Invention]

[0012] With this method, an SA duct for the air intake duct is not necessary, or if one is needed, a very short one of around 2 meters is sufficient, and since the OA duct is also short, the problems mentioned above related to the air intake duct are eliminated. Even if an air conditioner or 24-hour ventilation system is installed in the underfloor space or attic space, it is not ventilated into these spaces, so there is no need for maintenance of these spaces. Essentially, one or a few 24-hour ventilation systems and air conditioners can cover the entire area on each floor, and the only cleaning that is required is the associated filters.

[0013] Noise from outside is reduced by passing through the 24-hour ventilation system and then being diffused throughout the large space of the passageway, preventing noise from reaching each room.

[0014] Among conventional Type 1 24-hour ventilation systems, there are systems in which a 24-hour ventilation unit is installed in the hallway, and a long duct (SA duct) is installed from there to the indoor air intake vents of each room, with the indoor exhaust vents directly connected to the 24-hour ventilation unit. However, this system uses a method in which the air flows in the opposite direction, making it possible to shorten the SA duct or even eliminate it entirely. [Brief explanation of the drawings]

[0015] [Figure 1] A cross-sectional view of a typical first-class heat exchange ventilation system for a home. [Figure 2] A floor plan of a typical house. [Figure 3] Floor plan of the house shown in Figure 2, with the ventilation and air conditioning system of the present invention installed. [Figure 4] Cross-sectional view of the ventilation and air conditioning system of the present invention.

[0016] Figure 2 shows a typical floor plan for the first floor, which includes a living room L, two rooms R1 and R2, a kitchen K, a bathroom B, a toilet WC, a hallway E, and a corridor H. The passageway is the area shown in gray, extending from the hallway E to the staircase. Figure 3 shows the layout of the ventilation system of the present invention in the typical home shown in Figure 2. Ducts are indicated by thick dotted lines. A 24-hour heat exchange ventilation system 1 is installed in the attic (the inter-story space on the first floor, or the attic on the top floor) in a passageway such as an entrance hall, close to the outdoors, and a duct (OA duct 12) connects the outdoor air intake vent 2 on the exterior wall to the 24-hour heat exchange ventilation system 1. An indoor air intake vent 3 is attached to the bottom of the 24-hour heat exchange ventilation system 1 and opens into the passageway. The outdoor air is drawn into the 24-hour heat exchange ventilation system 1 from the outdoor air intake vent 2 through the OA duct 12 by the air intake fan of the 24-hour heat exchange ventilation system 1, where it is heat exchanged and supplied to the passage room. In addition, an air conditioner 6 is installed in the ceiling of the passage room to regulate the temperature inside the passage room. Between the passageway and each room (living room L, rooms R1 and R2) there are ventilation passages such as door undercuts or louvers, allowing air to flow from the passageway into each room. An indoor exhaust vent 4 is installed on the ceiling of each room, and a duct (RA duct 14) connects the indoor exhaust vent 4 to the 24-hour heat exchange ventilation system 1, and a duct (EA duct 15) connects the 24-hour heat exchange ventilation system 1 to the outdoor exhaust vent 5 on the exterior wall. The exhaust fan of the 24-hour heat exchange ventilation system 1 draws the exhaust air from each room through the indoor exhaust port 4 and the RA duct 14 into the 24-hour heat exchange ventilation system 1, where heat exchange takes place inside the system, and the exhaust air passes through the EA duct 15 from the heat exchange ventilation system 1 and is discharged outdoors through the outdoor exhaust port 5.

[0017] Figure 4 is a cross-sectional view of the ventilation and air-conditioning system of the present invention. Outdoor air flows from outdoor air intake 2 through OA duct 12 to 24-hour ventilation system 1, where it undergoes heat exchange and is then supplied to corridor H through indoor air intake 3 at the bottom of 24-hour heat exchange ventilation system 1, before passing through door undercut U and flowing into room R. Air that has passed through room R flows from indoor exhaust vent 4 through RA duct 14 to 24-hour heat exchange ventilation system 1. An air conditioner 6 is installed in the passageway.

[0018] As mentioned above, in addition to placing the 24-hour heat exchange ventilation system 1, OA duct 12, RA duct 14, and EA duct 15 in the attic, a system in which they are placed under the floor is also possible.

Claims

1. If we define a passageway as an indoor space that connects each room, such as a corridor or entrance hall, and serves as a passageway for people to move between rooms, A 24-hour heat exchange ventilation system is installed in the room, attic, or under the floor of the passageway, and a duct is connected from the outdoor air intake to the 24-hour heat exchange ventilation system. Either the indoor air intake is directly connected to the 24-hour heat exchange ventilation system, or the indoor air intake is installed in the passageway via a short duct from the 24-hour heat exchange ventilation system. The outdoor air is drawn into the 24-hour ventilation system from the outdoor air intake through a duct by the intake fan of the 24-hour heat exchange ventilation system, where it is heat exchanged and then supplied to the passageway. An air conditioner is installed in the passage room to regulate the temperature inside the passage room. Between the passage room and each room there is an air passage such as an undercut in the door or a louver, and air flows from the passage room into each room. Each room in the building has an indoor exhaust vent, and a duct connects the indoor exhaust vent to a 24-hour heat exchange ventilation system, and a duct connects the 24-hour heat exchange ventilation system to an outdoor exhaust vent. The exhaust fan of the 24-hour heat exchange ventilation system draws exhaust air from each room through the indoor exhaust port and duct into the 24-hour heat exchange ventilation system, where heat exchange takes place inside the 24-hour heat exchange ventilation system.The exhaust air then passes through the duct from the 24-hour heat exchange ventilation system and is discharged outdoors through the outdoor exhaust port, thereby providing ventilation and air conditioning for the entire floor.This is a first-class 24-hour ventilation system and entire floor air conditioning system.

2. A first-class 24-hour ventilation system and a whole-floor air conditioning system as described in claim 1, characterized in that a 24-hour heat exchange ventilation device is installed in a location close to the outdoors in a passageway, such as an entrance hall.

Images