JP2000097468A - Ductless ventilating system for residence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ductless ventilating system for a residence capable of ventilating without using the duct relative to a residence except a new building irrespective of a construction method. SOLUTION: Ventilating units 1 are installed respectively in living rooms (living and sitting rooms A, B and C). The amount of supplied air in each ventilating unit 1 is set to be higher than the amount of exhaust air so that each living room has positive pressure. An exhaust type ventilator 17 disposed in a room (lavatory) except the living rooms in a building is always operated so that a part of the air supplied to each living room from each indoor ventilating unit 1 is exhausted outside by the exhaust type ventilator 17 to carry out a ventilation. Thus, a part of air supplied to each living room (indoor air) flows to the lavatory of negative pressure in which the exhaust type ventilator 17 is provided through parts outside the living rooms from each living room of positive pressure and is exhausted outside by the exhaust type ventilator 17. As a result, a ventilation can be performed outside the living rooms without using a duct to realize a ventilating system for one floor or all the building. Thus, a ventilation can be performed relative to a residence except a new building irrespective of a construction method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residential ductless ventilation system for ventilating indoors without using a duct.

[0002]

2. Description of the Related Art Residential ventilation systems include an individual ventilation system for one room, a central ventilation system for one floor or the whole building. In a central ventilation system, a main unit is installed in the attic or under the floor. Air is transported through installation and duct piping.

FIG. 9 shows an outline of a conventional residential central ventilation system.

FIG. 9 is a schematic plan sectional view of a house showing the configuration of a conventional central ventilation system. The house shown in the figure has one living room, kitchen, toilet, toilet and bathroom, and three living rooms A, B and C are provided. A central ventilation unit 101 is installed, for example, in the attic of the house, and an outside air introduction duct 102 that opens to the outside.
And the exhaust duct 103 are connected to the outside air inlet and the exhaust port of the central ventilation unit 101, respectively. Each of the air supply ducts 104 connected to the four intake ports of the central ventilation unit 101 is a living room and each of the living rooms A and B. , C, respectively, and the ends thereof open to the living room and the living rooms A, B, C as air outlets.

When the central ventilation unit 101 is driven, the outdoor air OA is released from the outdoor air introduction duct 102.
Is passed through the central ventilation unit 101, and the outside air OA is totally exchanged heat (exchanging heat and moisture) between the living room and the room air A drawn into the central ventilation unit 101 from the rooms A, B, and C. After being supplied, each supply duct 104 is provided as supply air (total fresh air that has undergone heat exchange) SA.
To the living room and each of the living rooms A, B, and C.

[0006] The dirty indoor air RA in the living room and each of the living rooms A, B, and C is sucked by the central ventilation unit 101 as described above, and is mixed with the outside air OA flowing therethrough in the process of passing through the central ventilation unit 101. After being subjected to the total heat exchange, it is discharged outside through the exhaust duct 103 as exhaust EA.

Here, assuming that the introduction amount of outside air OA is 100% as shown in the figure, a 25% air supply SA is supplied to the living room and each of the living rooms A, B, and C, respectively, and the living room and each of the living rooms are supplied. From A, B, and C, 25% of room air RA is sucked into central ventilation unit 101 and collected, and exhaust EA having the same amount (100%) as the introduced amount of outside air OA is discharged outside. .

[0008]

However, in the above-mentioned conventional central ventilation system, the installation of the central ventilation unit and the duct piping use the attic or the underfloor of the house, so that it can be applied only to a newly built house. Also, there is a problem that it is not possible to cope with a house built by a construction method in which a space for duct piping cannot be secured under the attic or under the floor.

The present invention has been made in view of the above problems, and an object of the present invention is to provide ventilation for one floor or the whole building without using a duct even for a house other than a new construction regardless of a construction method. To provide a ductless ventilation system for houses.

[0010]

In order to achieve the above object, according to the first aspect of the present invention, a simultaneous supply / discharge type ventilation unit is installed in each living room, and the amount of air supply in each ventilation unit is calculated based on the amount of exhaust air. Each room is set to have a large positive pressure, and an exhaust type ventilation fan installed outside the indoor room is always operated and a part of the supply air supplied from each ventilation unit to each room is supplied to the exhaust type ventilation fan. By discharging to the outdoors
The floor or the whole building is ventilated.

According to a second aspect of the present invention, in the first aspect of the invention, a fan driven by a single motor is installed on each of an air supply side and an exhaust side of each of the ventilation units, and various types of these fans are provided. It is characterized in that the supply amount is set to be larger than the exhaust amount by changing the performance and providing a difference in performance.

According to a third aspect of the present invention, in the first aspect of the invention, a fan and a motor having the same specifications are respectively installed on the air supply side and the exhaust side of each of the ventilation units, and the rotation speeds of both fans are changed. The air supply amount is set to be larger than the exhaust amount.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the lengths of the air supply side flow passage and the exhaust side passage of the heat exchanger provided in each of the ventilation units are changed to allow the heat exchanger to be used in both the ventilation units. It is characterized in that the supply air amount is set to be larger than the exhaust air amount by providing a difference in pressure loss.

According to a fifth aspect of the present invention, the amount of supplied air is made smaller than the amount of exhaust air by returning a part of the indoor air exhausted through the heat exchanger provided in each of the ventilation units to the air supply side. It is characterized in that it is set large.

Therefore, according to the present invention, the amount of air supplied to the ventilation unit installed in each room is set to be larger than the amount of exhaust air to make each room a positive pressure, and the outside of the room (for example,
Because the exhaust type ventilation fan installed in the washroom was always operated, a part of the air supply (room air) supplied to each room was exhausted from each room with positive pressure through the corridor etc. It flows to the installed negative pressure washroom, etc., and is discharged outside by the exhaust type ventilation fan. As a result, ventilation outside the living room is possible without using a duct, and the ventilation system for one floor or the whole building Thus, ventilation of one floor or the whole building can be performed even for houses other than newly constructed houses regardless of the construction method.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic plan sectional view of a house showing the configuration of a ductless ventilation system according to the present invention. The house shown in the figure has one living room, kitchen, toilet, washroom and bathroom, and three living rooms A, B and C are provided.

Thus, in the ductless ventilation system according to the present invention, the simultaneous supply / exhaust type ventilation unit 1 is installed independently in the living room and each of the living rooms A, B, and C, and the air supply amount in each ventilation unit 1 ( 100%) is set to be larger than the displacement (50%) (in the present embodiment, the supply amount: displacement amount = 2: 1).
The pressure in B and C is set to positive pressure (positive pressure), and the exhaust type ventilation fan 17 installed in the washroom is constantly operated to supply air from each ventilation unit 1 to the living room and each of the living rooms A, B and C. SA
Of the floor (50%) is exhausted from the washroom to the outside by the exhaust type ventilation fan 17 to perform ventilation on one floor.

Here, the specific structure and operation of the ventilation unit 1 will be described with reference to FIGS. 2 is a side view of the ventilation unit, FIG. 3 is a bottom view of the ventilation unit, and FIG.
5 is a view in the direction of arrow X in FIG. 2, FIG. 5 is a view in the direction of arrow Y in FIG. 2, FIG. 6 is a partial perspective view of the total heat exchanger for explaining the operation of the ventilation unit, and FIG. It is a schematic diagram which shows the flow of air in a heat exchanger.

The ventilation unit 1 shown in FIGS. 2 to 5 has a main body case 2 in the form of a rectangular box. An exhaust port 3 and an outside air intake port 4 are provided above and below an end face of the main body case 2 facing the outside.
An indoor ventilation port 5 and an indoor intake port 6 are respectively opened above and below the other end face of the main body case 2 facing the room.

An air supply passage 7, an exhaust passage 8 and an outside air introduction passage 9 are formed from above in the main body case 2. The air supply passage 7 and the outside air introduction passage 9 are integrally formed by a common electric motor 10. Are provided with sirocco-type fans 11 and 12, respectively, which are rotationally driven.

Further, in the case body 2, a total heat exchanger 13 is provided.
Is attached to the case main body 2 so as to be detachable, and a filter 14 is detachably attached to a lower end surface of the total heat exchanger 13 facing the outside air introduction passage 9. As shown in FIG. 6, the total heat exchanger 13 is formed of a paper-made corrugated fin 15 that forms a flow path penetrating in a horizontal direction, and is disposed vertically in a direction perpendicular to the fin 15 and penetrates vertically. A corrugated fin 16 made of paper forming a flow path is alternately overlapped in the width direction (lateral direction).

Next, the ventilation unit 1 having the above configuration
The operation of will be described.

The fan 1 built in the ventilation unit 1
When the electric motors 1 and 12 are integrally rotated by the electric motor 10, fresh outdoor air OA (the amount of which is 100% as shown in FIG. 7) is introduced into the ventilation unit 1 from the outdoor air intake port 4. The outside air OA flows through the outside air introduction passage 9 toward the indoor side as shown by the solid arrow in FIG. 2 and is purified after passing through the filter 14 attached to the lower end surface of the total heat exchanger 13. Flow from the lower part to the upper part in the total heat exchanger 13, and the indoor air RA described later (the amount thereof is shown in FIG. 4).
The temperature (heat) and humidity (humidity) are exchanged (total heat exchange) between 100% as shown in FIG.
A is supplied indoors.

On the other hand, 100% of the indoor air RA, which is contaminated in the room, is sucked by the fan 11 and opens from the indoor air inlet 6 opening in the main body case 2 as shown by a broken arrow in FIG. The indoor air RA discharged from the fan 11 flows through the air supply passage 7 toward the room and crosses the total heat exchanger 13 substantially horizontally.

Therefore, in the total heat exchanger 13, a cross-flow of fresh outdoor air OA and dirty indoor air RA occurs, and both of them exchange total heat via the corrugated fins 15, 16 (see FIG. 6). And the room air R totally exchanged in this way
As shown in FIG. 7, half (50%) of A is mixed with 100% of the supply air SA as return air CA and supplied into the room through the indoor ventilation port 5 (see FIGS. 2 and 5). The flow direction of the remaining 50% of the room air RA is changed by 180 ° as shown in FIG. 2, flows horizontally through the total heat exchanger 13 and is subjected to total heat exchange with the outside air OA flowing therethrough. , Flows outward through the exhaust passage 8 as the exhaust EA, and
(See FIGS. 2 and 4). As described above, when a part (50% in the present embodiment) of the room air RA is again subjected to the total heat exchange with the outside air OA, the total heat efficiency of the total heat exchanger 13 is improved.

As described above, in the present embodiment,
As shown in FIG. 1, when the introduction amount of the outside air OA in each ventilation unit 1 is 100%, the same amount (100%) of the supply of the outside air OA obtained by the total heat exchange of the outside air OA by the total heat exchanger 13 is provided. The air SA and the 50% return air CA are mixed and supplied to each room (living room and living room A, B, C) as 150% indoor air RA, and 50% of 1/3 of 150% indoor air is supplied. As will be described later, it flows into the washroom and is discharged outside through the exhaust duct 18, and half (50%) of the remaining 100% of the indoor air RA is discharged outside as the exhaust EA through the indoor ventilation unit 1 and finally. Half of (50
%) Of the room air RA is mixed with the supply air SA as return air CA.

Thus, as described above, the amount of air supplied to each room =
By setting the amount of outside air OA introduced (100%) larger than the amount of exhaust air (50%), the pressure in the living room and each of the living rooms A, B, and C becomes positive pressure (positive pressure), and the living room and each living room A , B, and C, 50% of the room air RA flows into the negative pressure washroom because the exhaust-type ventilation fan 17 is constantly operated as shown by the dashed arrow in FIG. Is exhausted to the outside through the exhaust duct 18 as shown by the solid line arrow in FIG. 1 and the remaining 100% of the indoor air RA is
Half (50%) is returned to the room as return air CA, and the remaining 50% is discharged outside as exhaust EA. As a result, ventilation outside the living room becomes possible without the need for duct piping for connecting the ventilation unit 1 to the living room where the ventilation unit 1 is installed and the living rooms A, B, C, and the outside, thereby realizing a ventilation system. In addition, it becomes possible to ventilate houses other than new construction regardless of the construction method.

By the way, in the present embodiment, as a method of making the air supply amount larger than the exhaust air amount in each ventilation unit 1, a method of changing the specifications of the fans 11 and 12 to provide a difference between the performances is adopted. I have.

As another method of increasing the air supply amount to the exhaust air amount in each ventilation unit, a fan and a motor having the same specifications are installed on the air supply side and the air exhaust side of each ventilation unit, and the rotation of both fans is performed. By changing the number and setting the supply amount to be larger than the exhaust amount, changing the length of the supply side passage and exhaust side passage of the heat exchanger provided in each ventilation unit to reduce the pressure loss in both passages A method of setting the supplied air amount larger than the exhaust air amount by providing the difference can be considered.

As another method, as shown in FIG. 8, a part (50% in the illustrated example) of the room air RA that has passed through the total heat exchanger 13 provided in each ventilation unit is exhausted E
A method is considered in which the air is discharged outside as A and the remaining 50% of the indoor air RA is mixed with the supply air SA (100%) as return air CA.

In this embodiment, each ventilation unit 1
Although the ratio between the supply air amount and the exhaust air amount is set to 2: 1, this ratio is arbitrary and is usually set in the range of 1.5 to 2.

[0033]

As is clear from the above description, according to the present invention, the air supply amount in the ventilation unit installed in each room is set to be larger than the exhaust amount, and each room is set to a positive pressure.
Since the exhaust type ventilation fan installed outside the indoor room (for example, in the washroom) is always operated, the air in each room (indoor air) passes through the outside of the room from each room of positive pressure and the exhaust type ventilation fan is used. It flows to the installed negative pressure washroom, etc., and is discharged outside by the exhaust type ventilation fan. As a result,
Ventilation outside the living room is also possible without using ducts, and a ventilation system for one floor or the whole building is realized, and ventilation of one floor or the whole building can be performed for houses other than new construction regardless of the construction method. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic plan sectional view of a house showing a configuration of a ductless ventilation system according to the present invention.

FIG. 2 is a side view of a ventilation unit included in the ductless ventilation system according to the present invention.

FIG. 3 is a bottom view of a ventilation unit constituting the ductless ventilation system according to the present invention.

FIG. 4 is a view in the direction of arrow X in FIG. 2;

FIG. 5 is a view in the direction of arrow Y in FIG. 2;

FIG. 6 is a partial perspective view for explaining the operation of a total heat exchanger provided in a ventilation unit constituting the ductless ventilation system according to the present invention.

FIG. 7 is a schematic diagram showing a flow of air in a total heat exchanger provided in a ventilation unit constituting a ductless ventilation system according to the present invention.

FIG. 8 is a schematic diagram showing a flow of air in a total heat exchanger provided in a ventilation unit constituting a ductless ventilation system according to the present invention.

FIG. 9 is a schematic plan sectional view of a house showing a configuration of a conventional central ventilation system.

[Explanation of symbols]

 Reference Signs List 1 ventilation unit 10 electric motor 11, 12 fan 13 total heat exchanger (heat exchanger) 17 exhaust ventilation fan CA return air EA exhaust OA outside air RA indoor air SA air supply

Claims (5)

[Claims] 1. A simultaneous supply / exhaust type ventilation unit is installed in each living room, and the air supply amount in each ventilation unit is set to be larger than the exhaust air amount so that each living room is set to a positive pressure and installed outside the indoor living room. The ventilation of one floor or the whole building is performed by constantly operating the exhaust type ventilation fan and discharging a part of the supply air supplied from each ventilation unit to each living room to the outside with the exhaust type ventilation fan. Residential ductless ventilation system. 2. A fan driven by a single motor is installed on each of an air supply side and an air exhaust side of each of the ventilation units, and a difference in performance is provided by changing the specifications of these fans to supply air. The ductless ventilation system for a house according to claim 1, wherein the pressure is set larger than the displacement. 3. A fan and a motor having the same specifications are installed on the air supply side and the air exhaust side of each of the ventilation units, and the air supply amount is set to be larger than the exhaust amount by changing the rotation speed of both fans. The residential ductless ventilation system according to claim 1. 4. The air supply amount is reduced by changing the length of the air supply side flow passage and the exhaust side passage of the heat exchanger provided in each of the ventilation units to provide a difference in pressure loss between the two passages. The residential ductless ventilation system according to claim 1, wherein the ventilation duct is set to be larger than the above. 5. An air supply amount is set to be larger than an exhaust amount by returning a part of room air exhausted through a heat exchanger provided in each of the ventilation units to an air supply side. The ductless ventilation system for a house according to claim 1, wherein: