JP7614044B2 - How to renovate and ventilate your home - Google Patents

Description

The present invention relates to a method for renovating a house.

In recent years, various proposals have been made on so-called partial insulation renovations, in which insulation is added to only limited living areas of existing houses (for example, the living room, which is the main living space, and the bathroom where undressing is performed, etc.). Such partial insulation renovations have the advantage of improving the air conditioning efficiency and comfort of living rooms, etc. at low cost. For example, the following Patent Document 1 has proposed partial insulation renovations.

In Patent Document 1, by applying additional insulation to the first living space, the first living space is made more highly insulated than the adjacent second living space. In addition, in Patent Document 1, outside air for ventilation is provided to the second living space in winter to create positive pressure in the space, preventing the air in the first living space, which tends to be humid, from flowing into the cooler second living space and causing condensation.

Patent No. 6496190

However, ideally, fresh outside air for ventilation should be brought directly into the main living space.

The present invention was devised in light of the above-mentioned circumstances, and aims to provide a method of renovating a house that can introduce fresh outside air into the first room, whose insulation performance has been improved through partial insulation renovation, while preventing condensation in the first room, which has relatively poor insulation performance.

The first invention of the present application is a method for renovating a house including a first room and a first room equipped with an air supply means for introducing outside air, and includes a first step of improving the insulation performance of the walls and/or partitions surrounding a space including the first room, excluding the first room, from the existing state, and a second step of configuring a ventilation path that supplies air from the first room to the first room via a total heat exchange ventilation device.

The second invention of the present application is a method for renovating a house including a first living room and a first room, and includes a first step of improving the insulation performance of the walls and/or partitions surrounding a space including the first living room, excluding the first room, from the existing state; a second step of configuring a ventilation path that supplies air from the first living room to the first room via a total heat exchange ventilation device; and a third step of providing an air supply means that introduces outside air into the first living room.

In the first and second inventions, the house includes a first partition that separates the first living room from the first room, and the second step can include a step of installing the total heat exchange ventilation device in the first partition.

The third invention of the present application is a method for ventilating a house including a first living room and a second room, and includes the steps of: improving the insulation performance of walls and/or partitions surrounding a space including the first living room, excluding the first room, to a level higher than the existing state; introducing outside air into the first living room; and supplying the air from the first living room to the first room via a total heat exchange ventilation device.

By adopting the above-mentioned steps, the housing renovation methods of the first and second inventions can introduce fresh outside air into the first room, whose insulation performance has been improved by partial insulation renovation, while preventing condensation in the first room, which has relatively poor insulation performance.

In addition, by adopting the above-mentioned steps, the third invention of the housing ventilation method can introduce fresh outside air into the first room, which has improved insulation performance, while preventing condensation in the first room, which has relatively poor insulation performance.

FIG. 1 is a vertical cross-sectional view of a house renovated in accordance with this embodiment. FIG. 2 is a floor plan of the house of FIG. 1. 1 is a cross-sectional view of a total heat exchange ventilation device according to the present embodiment.

Below, an embodiment of the present invention will be described with reference to the drawings. It should be understood that the drawings contain exaggerated expressions and expressions that differ from the dimensional ratios of the actual structure in order to aid in understanding the contents of the invention. Furthermore, the same reference numerals are used for identical or common elements throughout each embodiment, and duplicate explanations will be omitted. Furthermore, the specific configurations shown in the embodiments and drawings are intended to aid in understanding the contents of the present invention, and the present invention is not limited to the specific configurations shown in the drawings.

Figure 1 is a schematic cross-sectional view of a house 1 that has been renovated according to this embodiment, and Figure 2 shows its floor plan. Figure 1 corresponds to the cross-sectional view along line I-I in Figure 2. As shown in Figures 1 and 2, the house 1 of this embodiment includes an underfloor space 2 and multiple living spaces 3 as above-floor spaces. In Figures 1 and 2, a single-story house is shown as an example of the house 1, but it may also be two-story.

The underfloor space 2 is a non-residential area surrounded by the foundation 5, the dirt floor 6, and the floor 7. In this embodiment, the foundation 5 has a foundation insulation structure with insulation material 8 arranged in its rising portion. In addition, insulation material (not shown) may be arranged on the underside of the floor 7.

In addition, in this embodiment, an outside air intake 9 is provided at the rising portion of the foundation 5 to introduce fresh outside air Ao into the underfloor space 2. The outside air Ao taken into the underfloor space 2 from the outside air intake 9 is heat exchanged with the earth cold via the earthen floor 6. This allows the air in the underfloor space 2 (hereinafter sometimes simply referred to as "underfloor air") to have a higher temperature than the outside air Ao in winter. The earthen floor 6 is finished, for example, with concrete.

The living area 3 is located above the underfloor space 2. In this embodiment, the living area 3 includes at least a first living room 30 and a first room 31, and further includes a second room 32, a hall 34, a Western-style room 35, etc.

The first room 30 is the main living space, and in this embodiment, is a living room (e.g., living/dining/dining-dining-kitchen). The first room 30 is also provided with an exhaust fan F1 for discharging air from the first room 30 (particularly the area around the kitchen) to the outdoors.

The first room 31 is a room where the occupants spend less time than the first living room 30. In this embodiment, the first room 31 is, for example, a Japanese-style room, but may be another type of room. The first room 31 is adjacent to the first living room 30 via, for example, a first partition 11. In this embodiment, the first partition 11 is a partition wall 11w equipped with fittings 11a that allow passage to and from the first living room 30. In addition, the first room 31 is provided with an openable ventilation louver 15, for example, on the outer wall w4.

The second room 32 is, for example, a washroom/bathroom space for undressing, and in this embodiment, it is directly adjacent to the first living room 30 via the second partition 12. In this embodiment, the second room 32 is provided on the opposite side of the first living room 31 in the horizontal direction, but is not limited to this aspect. The second partition 12 in this embodiment is a partition wall 12w equipped with a fitting 12a that allows movement between the first living room 30 and the second living room 31. In addition, the second room 32 is provided with, for example, an exhaust fan F2 for discharging air and moisture from the second room 32 to the outside. The second room 32 is divided into a washroom and a bathroom by the third partition 13. In other embodiments, the second room 32 may be indirectly adjacent to the first living room 30. In this case, the second room 32 is adjacent to the first living room 30 via a space such as a hall 34 or a corridor (not shown).

As shown in FIG. 1, the house 1 of this embodiment is equipped with an air supply means 20 for supplying outside air Ao to the first living room 30. The air supply means 20 is not particularly limited as long as it is capable of taking in the outside air Ao into the first living room 30, and various types of air supply means, such as a wall-mounted air supply fan, can be used.

The air supply means 20 in this embodiment includes, for example, a duct 21, a filter member 22 for removing foreign matter from the outside air Ao, and a suction fan 23.

The duct 21 is arranged so that, for example, the intake port 21a is connected to the underfloor space 2 and the exhaust port 21b is connected to the first living room 30. In a preferred embodiment, the intake port 21a of the duct 21 is fixed at a position that is a sufficient horizontal distance (e.g., 2 m or more) away from the outside air intake 9 of the underfloor space 2. This allows the duct 21 to take in the outside air Ao that has entered the underfloor space 2 from the outside air intake 9 after foreign matter such as fine particles and pollen has settled on the dirt floor 6. In this embodiment, the exhaust port 21b of the duct 21 is connected to an air intake port 24 such as a louver provided on the ceiling surface of the first living room 30.

By operating the intake fan 23, the air supply means 20 as described above can supply relatively warm underfloor air, which has been heat exchanged with the earth cold energy in the earthen floor 6 and is therefore relatively warm even in winter, to the first living room 30, which is the main living space of the house 1.

[First embodiment of reform method]
Next, a method for renovating the house 1 configured as above will be described. The method for renovating the house 1 of this embodiment includes a first step and a second step, as described in detail below. The order in which the first step and the second step are performed is not particularly limited, and either step may be performed first, or they may be performed simultaneously.

[First step]
First, the first step of the remodeling method of the present embodiment will be described. The first step is a step of improving the insulation performance of the walls and/or partitions surrounding the space including the first living room 30, excluding the first room 31, from the existing state.

In the first step of this embodiment, for example, as shown in FIG. 2, new insulation material 26 is added to the exterior walls w1, w2, the first partition 11, and the partition w3 that surround the space including the first room 30 and the second room 32. More specifically, the first step is performed by adding insulation material 26 to substantially the entire surface of each of the exterior walls w1, w2, the first partition 11, and the partition w3, except for openings such as windows. In the first step, insulation material 26 may also be provided on the ceiling surface and/or floor surface of the first room 30 and the second room 32.

In addition, instead of or in addition to the above embodiment, the first step may be performed by increasing the thermal insulation of the openings when the walls and/or partitions surrounding the first room 30 and the second room 32 include openings. Specifically, the thermal insulation performance may be increased by replacing the openings with, for example, double glazing or double sashes.

On the other hand, in the first step, no new insulation material 26 is added to the outer wall w4 and/or partition w5 of the first room 31, except for the first partition 11. This reduces the amount of new insulation material 26 added, and allows insulation renovation to be achieved at low cost.

Various materials can be used as the insulating material 26, such as urethane foam, polystyrene foam, or phenol foam. In a preferred embodiment, a decorative finish material in which a plate-shaped insulating material 26 is pre-combined with a decorative finish material can be used. These insulating materials 26 can be fixed to existing walls, ceilings, floors, etc., using, for example, fasteners such as screws or adhesives. The insulating material 26 is not limited to being plate-shaped, and can be formed, for example, by spraying a cellular material directly onto an existing wall surface, etc.

By carrying out the first step described above, a partial insulation renovation can be carried out in which the insulation performance of the walls and/or partitions surrounding the space including the first living space 30 is improved from the existing state. As a result, in winter, the heating and air conditioning efficiency in the first living space 30, which is the main living space, can be improved, and the first living space 30 and the second living space 32, where undressing and the like are performed, can be maintained in a relatively high temperature and humidity environment.

[Second step]
In general, the first room 31, which is not the target of the insulation reform in the first step, is likely to be in a relatively low-temperature environment compared to the partially insulated first living room 30, etc. For this reason, if the humid air in the first living room 30 flows into the first living room 31, it may be cooled in the first living room 31 and cause condensation. Therefore, in the second step of the reform method of this embodiment, a ventilation path is configured to supply the air in the first living room 30 to the first living room 31 via the total heat exchange ventilation device 40.

The second step of this embodiment includes the steps of providing an opening O in the first partition 11 and installing a total heat exchange ventilation device 40 in this opening O, as shown in FIG. 3.

The total heat exchange ventilation device 40 includes, for example, a casing 41, a first fan 42, a second fan 43, and a total heat exchange element 44 arranged inside the casing 41.

The casing 41 has a first intake port 41a and a first outlet port 41b formed on the side facing the first room 30. The casing 41 also has a second intake port 41c and a second outlet port 41d formed on the side facing the first room 31.

Furthermore, inside the casing 41, a first flow path 401 and a second flow path 402 are formed by partition members 45 and 46.

The first flow path 401 is connected from the first intake port 41a through the total heat exchange element 44 to the second outlet port 41d. By operating the first fan 42, the air in the first room 30 is supplied to the first room 31 through the first flow path 401.

The second flow path 402 is connected from the second intake port 41c through the total heat exchange element 44 to the first outlet port 41b. By operating the second fan 43, the air in the first room 31 is supplied to the first room 30 through the second flow path 402.

In addition, the air in the first flow path 401 and the air in the second flow path 402 are ventilated through the total heat exchange element 44 without mixing with each other.

As a result of the partial insulation renovation in the first step, in winter, the air in the first room 30 becomes hotter and more humid than the first room 31. Therefore, during ventilation by the total heat exchange ventilation device 40, the sensible heat (temperature) and latent heat (humidity) of the air in the first room 30 are recovered by the total heat exchange element 44. Therefore, dry air from which moisture has been recovered by the total heat exchange element 44 is supplied to the first room 31 from the second air outlet 41d, thereby suppressing condensation in the first room 31.

In addition, in winter, the air in the first room 31 is lower in temperature and humidity than the air in the first living room 30, so the air in the first room 31 passes through the second flow path 402, receives heat and humidity in the total heat exchange element 44, and can be supplied to the first living room 30.

According to the remodeling method of this embodiment as described above, the first step makes it possible to highly insulate the main living space including the first living room 30, thereby improving heating and air conditioning efficiency and comfort at low cost. In addition, fresh outside air Ao is supplied to the first living room 30, so that the main living space can be effectively ventilated. Furthermore, by performing the second step, the humid air in the first living room 30 is supplied to the first room 31 as dry air, so that condensation can be prevented in the first room 31, which has not been remodeled with insulation.

[Second embodiment of reform method]
Next, a second embodiment of the reforming method will be described.
The second embodiment is a remodeling method for a house 1 that does not have an air supply means 20 that introduces the outside air Ao. In this embodiment, the first and second steps are the same as those in the first embodiment, but the second embodiment differs from the first embodiment in that it includes a third step of providing the air supply means 20 that introduces the outside air Ao into the first living room 30.

In the third step, various air supply means 20 may be provided. In Figs. 1 and 2, an air supply means 20 capable of supplying underfloor air to the first room 30 is shown, but an air supply fan capable of introducing outside air Ao may be provided on the exterior wall w2 facing the first room 30. Furthermore, in order to promote ventilation of the first room 31, a configuration may be adopted in which a portion of the air from the air supply means 20 is supplied to the first room 31.

In the second embodiment, the order in which steps 1 to 3 are performed is not particularly limited.

[House ventilation methods]
According to the above-described remodeling method, in this embodiment, a new ventilation method for ventilating the house 1 can be constructed. That is, the ventilation method for the house 1 including the first living room 30 and the first room 31 includes a step of improving the insulation performance of the walls and/or partitions surrounding the space including the first living room 30, excluding the first room 31, from the existing state, a step of introducing outside air Ao into the first living room 30, and a step of supplying the air of the first living room 30 to the first room 31 via the total heat exchange ventilation device 40.

This type of ventilation method can effectively ventilate the main living space because fresh outside air Ao is supplied to the first living room 30. Furthermore, by carrying out the second step, the humid air in the first living room 30 is supplied to the first room 31 as dry air, which can prevent condensation in the first room 31, which has not been insulated.

The above describes in detail a particularly preferred embodiment of the present invention, but the present invention is not limited to the illustrated embodiment and can be modified and implemented in various ways.

Reference Signs List 1 House 8 Insulation 20 Air supply means 26 Insulation 30 First living room 31 First room 40 Total heat exchange ventilation device Ao Outside air F1 Exhaust fan F2 Exhaust fan

Claims (4)

A method for renovating a house including a first living room having an air supply means for introducing outside air, and a first room,
A first step of improving the thermal insulation performance of a wall and/or a partition surrounding a space including the first room, except for the first room, to be higher than an existing state;
A second step of configuring a ventilation path for supplying air from the first room to the first room via a total heat exchange ventilation device.
How to renovate a house. A method for renovating a house including a first living room and a first room,
A first step of improving the thermal insulation performance of a wall and/or a partition surrounding a space including the first room, except for the first room, to be higher than an existing state;
A second step of configuring a ventilation path that supplies air from the first room to the first room via a total heat exchange ventilation device;
and a third step of providing an air supply means for introducing outside air into the first living space. The house includes a first partition that separates the first living room and the first room,
The method for renovating a house according to claim 1 or 2, wherein the second step includes a step of installing the total heat exchange ventilation device in the first partition. A ventilation method for a house including a first living room and a first room,
A step of improving the thermal insulation performance of a wall and/or a partition surrounding a space including the first room, except for the first room, to be higher than an existing state;
Introducing outside air into the first room;
Supplying air from the first room to the first room via a total heat exchange ventilation device;
How to ventilate a home.

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