JPH11190542A - Ventilation system for housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the indoor space of a housing in a constantly excellent state by properly switching over natural ventilation and forced ventilation, to increase a ventilation amount of natural ventilation, and to increase supply of air to an upper space. SOLUTION: This ventilation system comprises a forced ventilation means provided with a forced air supply port 22, a forced exhaust port 24, and a ventilation fan 26; a natural ventilation means provided with a natural sir supply port 32 and a natural exhaust port 34; and a ventilation control means 40 to open the forced air supply port and the forced exhaust port 24 and perform forced ventilation operation through regulation of a ventilation amount during operation of the ventilation fan 26 and open the natural air supply port 22 and the natural exhaust port 34 to perform natural ventilation operation during non-operation of the ventilation fan 26 in linkage with operation of the ventilation fan 26. The natural exhaust port 34 is formed in a position above the neutral zone of a housing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system for a house, and more particularly, to a ventilation system for exchanging air between the indoor space of the house and the outside world.

[0002]

2. Description of the Related Art As a ventilation system for a house, the simplest method conventionally used is natural ventilation in which air flows between a room space and the outside world due to the movement of natural wind and air. In natural ventilation, the ventilation volume is usually adjusted by changing the area of an opening through which air enters and exits by opening and closing windows and shojis. Windows, shojis or doors may be provided with ventilation openings. To increase ventilation by natural ventilation,
It is considered preferable to make the opening area of the ventilation port as large as possible.

Further, forced ventilation using a ventilation fan or the like is also performed. The ventilation fan includes an exhaust fan that forcibly discharges the air in the room to the outside and an air supply fan that forcibly takes the air in the room into the room. In particular, in a house provided with an indoor combustion-type heater or the like, it is important to secure good oxygen concentration in the indoor space and perform good ventilation so that harmful gas does not increase. However, it is necessary to minimize the escape of indoor conditioned air to the outside world and the entry of unconditioned air from the outside world in order to avoid damaging the air-conditioning environment in a room that is being cooled, heated or air-conditioned. There is. Therefore, in such a case, forced ventilation is not preferable if it is excessively excessive.

In order to perform efficient ventilation by forced ventilation, it is necessary to appropriately adjust the movement of air in a room and the flow of air between the room and the outside. For example, if the ventilation opening is too narrow, no matter how powerful the ventilation fan is operated, the ventilation of the indoor space will not be performed efficiently and the power energy will be wasted. Conversely, if the ventilation openings are too wide, the air around the ventilation fans and ventilation openings will only move, and sufficient ventilation may not be provided for other indoor spaces. Efficiency decreases. In addition, since natural ventilation also occurs from the ventilation opening, natural ventilation is added simultaneously with ventilation by the ventilation fan, and the air in the indoor space is excessively ventilated, and air conditioning and humidity adjustment may not be performed sufficiently . Depending on the arrangement of the ventilation fans and ventilation openings, the air flow in the indoor space may change, and the ventilation state may change.

[0005]

If the ventilation system of a house is to be operated only by forced ventilation without performing any natural ventilation described above, and efficient design of ventilation fans and ventilation openings, efficient ventilation can be attained. It is considered possible. However, if the forced ventilation is always performed, the power consumption increases and it is uneconomical. In addition, as for the occupants' sensation, there is a tendency that natural ventilation is more comfortable than forced ventilation.

Therefore, it is desired to be able to switch between forced ventilation and natural ventilation depending on the situation. However, as described above, in the natural ventilation and the forced ventilation, since the preferred structure of the ventilation ports and the required opening amount differ, each time the ventilation method is switched, not only the operation of the ventilation fan is turned on / off, but also the ventilation is performed. It is necessary to open and close the mouth and adjust the opening amount.

For example, even if the ventilation fan is turned on, efficient ventilation by forced ventilation cannot be performed if the ventilation opening has a large opening suitable for natural ventilation. In forced ventilation,
Since the opening amount of the ventilation opening is limited, if the ventilation fan is stopped in this state to perform natural ventilation, good natural ventilation cannot be achieved because the ventilation opening is narrow. In particular, if the ventilation fan stops due to a power outage or other unexpected situation while the resident is sleeping, etc., while the forced ventilation is being performed, the ventilation will quickly become insufficient and the indoor environment will deteriorate, Problems such as giving discomfort arise.

Accordingly, the present inventor has proposed a ventilation system for a house which can appropriately switch between natural ventilation and forced ventilation to always maintain a good indoor ventilation space (Japanese Patent Application No. 9-234650). ). The proposed ventilation system for a house is a system that performs ventilation between the indoor space of the house and the outside world, and includes forced ventilation means, natural ventilation means, and ventilation control means. The forced ventilation means includes a forced air supply port, a forced exhaust port, and a ventilation fan. The natural ventilation means includes a natural air supply port and a natural exhaust port. The ventilation control means performs a forced ventilation operation when the ventilation fan operates, and performs a natural ventilation operation when the ventilation fan does not operate.

[0009] Further, in such a ventilation system for a house, it is desired to increase the ventilation volume of natural ventilation and increase the supply of air to the upper space. It is an object of the present invention to appropriately switch between natural ventilation and forced ventilation to keep the indoor space of a house always in a good ventilation state, increase the ventilation volume of natural ventilation, and increase air supply to the upper space. Is to do so.

[0010]

SUMMARY OF THE INVENTION A ventilation system for a house according to the present invention is a system for ventilating between the indoor space of a house and the outside world, and comprises a forced ventilation means, a natural ventilation means and a ventilation control means. Prepare. The forced ventilation means is located at the open / close forced air supply port that takes in the outside air from the outside to the indoor space, the openable forced air outlet that exhausts the room air from the indoor space to the outside, and the forced air supply port or the forced exhaust port. Ventilation fan. The natural ventilation means includes a freely openable and closable natural air supply port that takes in outside air from the outside world into the indoor space, and a freely openable and closable natural exhaust port that exhausts room air from the indoor space to the outside world. The ventilation control means interlocks with the operation of the ventilation fan, when the ventilation fan is activated, opens the forced air supply port and the forced exhaust port, adjusts the ventilation volume and performs the forced ventilation operation, and when the ventilation fan is not activated, Open the natural air supply port and the natural exhaust port to perform the natural ventilation operation. The natural vent is formed above the neutral zone of the house.

Each component requirement will be specifically described. [Housing] Applies to general houses such as single-family homes and condominiums. Wooden or concrete, 1
The structure of the house, such as a floor or a two-story, is not particularly limited. A house has an indoor space separated from the outside world by a wall or the like. The indoor space may mean only one room of the house or may mean a plurality of rooms.

[Forced Ventilation Means] A ventilation fan similar to a normal forced ventilation device is used. One or both of the air supply fan and the exhaust fan may be provided. The shape and structure of the forced air supply port and the forced exhaust port, and the location of the forced air supply port and the forced exhaust port can be the same as those of the ventilation port in the ordinary forced ventilation device. In the following description, regarding the technology common to the forced air supply port and the forced exhaust port, the air supply port and the exhaust port are collectively referred to as a ventilation port.

The ventilation opening may be placed on any one of the wall surface, ceiling surface and floor surface of the house. When the indoor space is provided with a heater or an air conditioner, the arrangement structure of the ventilation openings is set in consideration of air circulation or heat transfer when these devices are combined. The ventilation openings are provided with ventilation volume adjusting means for adjusting the respective opening areas or ventilation volumes. Specifically, the opening area or the ventilation resistance may be adjusted by a damper arranged in the opening. The mechanism for adjusting the amount of ventilation by the damper can employ the same structure as a normal ventilation device. The opening area can be changed by turning the plate-shaped damper. For the operation of the damper, an electric operation mechanism such as a motor or an electromagnetic cylinder mechanism can be adopted. By changing the heating state of the shape memory material, a force for operating the damper can be generated. It is also possible to use the force of a spring, the action of gravity, or the magnetic force.

[0014] As the ventilation amount adjusting means, the ventilation capacity of the air supply fan or the exhaust fan can be adjusted. Specifically, the supply power or the voltage may be adjusted to increase or decrease the rotation speed of the ventilation fan. When a plurality of ventilation fans are provided, by adjusting the number of ventilation fans to be operated, the total ventilation volume can be adjusted. [Natural ventilation means] The structure of the natural air supply port and the natural exhaust port is basically the same as that of the above-mentioned forced ventilation means. In the following description, as for the technology common to the natural air supply port and the natural exhaust port, the natural air supply port and the natural exhaust port are collectively referred to as a ventilation port. When distinguishing a ventilation port between a forced ventilation means and a natural ventilation means, it may be called a forced ventilation port or a natural ventilation port.

The opening area and location of the natural ventilation opening are set so that the ventilation of the room can be achieved only by natural ventilation without using a ventilation fan. The natural ventilation opening should be able to switch between the open state and the closed state. Specifically, the damper can be provided. However,
The adjustment of the ventilation volume of the natural ventilation opening only needs to be able to switch between at least two stages of fully open and fully closed. Of course, the ventilation amount may be adjusted in a plurality of steps or continuously between fully open and fully closed. An open / close switching type natural ventilation port and an opening amount adjustment type natural ventilation port can be used in combination.

Furthermore, if appropriate ventilation conditions can be set for each of the forced ventilation operation and the natural ventilation operation,
Part of the natural ventilation port and forced ventilation port can be used. Specifically, a forced air supply with a ventilation fan,
What is necessary is just to provide the natural air supply port and the exhaust port which doubles as a forced exhaust port and a natural exhaust port. It is also possible to combine an air supply port that serves both as a forced air supply port and a natural air supply port, a forced air exhaust port provided with a ventilation fan, and a natural air exhaust port.

[Ventilation control means] If the respective operations of the forced ventilation operation and the natural ventilation operation can be controlled, the same technology of the control device and the control method as in the ordinary ventilation system can be applied. Specifically, the opening and closing of each ventilation port and the adjustment of the opening amount are controlled in conjunction with the operation and non-operation of the ventilation fan.
The ventilation fan and the opening / closing mechanism of each ventilation port can be electrically controlled, and can be controlled by a microcomputer or a control circuit.

The forced ventilation operation is performed when the ventilation fan is operating. Open the forced air supply and forced exhaust ports. Normally, the natural air supply port and the natural exhaust port are closed, but are opened when they are also used as the forced air supply port or the forced exhaust port. The opening amount of the entire ventilation opening is controlled to be set to a relatively small opening amount at which the forced ventilation by the ventilation fan is favorably achieved. Here, “relatively narrow” is an expression in comparison with a natural ventilation operation described later. The opening amount of the ventilation opening can be controlled in accordance with the switching of the intensity of the ventilation fan and the adjustment of the air volume. Some vents not related to the operation of the ventilation fan may be closed.

The natural ventilation operation is performed when the ventilation fan is not operating. The natural air supply port and the natural exhaust port are opened to set a relatively wide opening suitable for ventilation by natural ventilation, for example, a fully open state. All ventilation openings may be fully opened, or the opening amount may be adjusted in at least some of the ventilation openings to adjust the ventilation state. At this time, the forced ventilation port used in the forced ventilation operation may be closed, or the forced ventilation port may be left open in order to further increase the natural ventilation. In this case, the forced air supply port and the forced air exhaust port constitute a part of the natural ventilation port, and the opening area of the original natural air supply port and the natural exhaust port can be set small. .

The ventilation control means receives information from means for acquiring various environmental conditions, such as a temperature sensor and a gas detector, and calculates and processes the information to derive necessary ventilation conditions. Opening and closing and the operation of the ventilation fan can be appropriately adjusted. Information from an air conditioner such as a heater can also be used. In the ventilation control means, artificially switching between forced ventilation and natural ventilation,
Input means for changing the setting conditions can be provided. It is also possible to provide a display device that indicates the state of ventilation being performed.

[Neutral zone] When there is a temperature difference between the indoor space of the house and the outside world, a pressure difference due to buoyancy occurs due to a difference in specific weight of air, and natural ventilation is performed. The specific weight of air in the indoor space and gamma _1, the specific weight of ambient air and gamma _2,
The pressure in the chamber floor level expressed in atmospheric reference pressure to P _1.
The atmospheric reference pressure P when the indoor height is h is expressed by the following equation (1).

P = P ₁ + (γ ₂ −γ ₁ ) h (1) A position where the pressure difference between the indoor space of the house and the outside is zero is called a “neutral zone”. Since P = 0 in the neutral zone, if the height of the neutral zone is H, then from Equation (1), P ₁ = − (γ ₂ −γ ₁ ) h (2) Equation (2) Into the equation (1), P = (γ ₂ −γ ₁ ) (h−H) (3) In particular, in winter, outside air flows in from below the neutral zone of the height H. Then, the air in the indoor space flows out from above the neutral zone at the height H.

When the natural exhaust port is formed higher, the position of the neutral zone is higher. As the position of the neutral zone increases, the volume of natural ventilation increases and the air supply to the headspace increases. This point will be illustrated and described in more detail later. [Opening direction biasing means] The mechanism for adjusting the open / close state of the natural ventilation port is normally controlled by the ventilation control means, but when the control by the ventilation control means is not performed, the state in which the natural ventilation port is opened. Is the opening direction urging means.

[0024] The opening direction urging means is provided in a vent opening to be opened at the time of natural ventilation operation. When a damper is provided in the ventilation opening, the damper can be urged in the opening direction using an urging member such as a coil spring. It can also be energized using magnetic force or gravity. The open state opened by the opening direction urging means usually means a fully opened state, but may not be fully opened in a range where natural ventilation can be performed well.

If the natural ventilation opening is provided with the opening direction urging means, when the control by the ventilation control means is stopped, the natural ventilation opening is automatically opened to enable a natural ventilation. When the forced ventilation operation is performed and the ventilation control means becomes inoperable or fails due to an accident such as a power failure,
Natural ventilation can be immediately performed to prevent environmental degradation in the indoor space.

[Air-conditioning means] A mechanism for adjusting environmental conditions such as the temperature and humidity of the indoor space. For example, a gas- or oil-fired heater, a compression-type air conditioner, a humidity controller, a so-called air conditioner, etc. Is equivalent. The operation of the air conditioner and the control by the ventilation controller can be linked.

That is, when the air conditioner operates, the ventilation fan is operated to perform the forced ventilation operation. When the air conditioner is not operating, the natural ventilation operation is performed without operating the ventilation fan. In this way, a good ventilation state can be realized without impairing the state of adjustment of the indoor environment by the air-conditioning unit. When the air-conditioning means is stopped, the operation immediately shifts to the natural ventilation operation, and the indoor space can be brought into a comfortable natural ventilation state.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The house ventilation system shown in FIG. 1 is applied to a house 10 in which an indoor space 12 and an outside world 16 are separated by a wall 14. [Overall Structure] A forced air supply port 22 and a natural air supply port 32 are provided on one wall surface 14 of the house 10, a forced exhaust port 24 is provided on the other wall surface 14, and a natural air supply port 24 is provided on the ceiling surface. An exhaust port 34 is provided.

The forced air supply port 22 is provided with a damper 23 whose opening area can be changed. Although not shown, the natural air supply port 32 is also provided with a similar damper to open and close. The forced exhaust port 24 is also provided with a damper 25 whose opening area can be freely changed, and the natural exhaust port 34 is also provided with a damper 36, which can be opened and closed like the natural air supply port 32. The forced exhaust port 24 is provided with a ventilation fan 26. The ventilation fan 26 operates as an exhaust fan and removes the air in the indoor space 12 from the outside world 16.
Exhaust to.

The indoor space 12 includes a room exhaust type heater 5.
0, an air conditioner 60 for performing air conditioning or humidity control is installed. Further, temperature sensors 72 and 74 for measuring the temperature of the indoor space 12 and the outside world 16 are provided, and a gas detector 82 is attached to the indoor space 12. Starting with the ventilation fan 26 described above, the forced air supply port 22, the natural air supply port 32,
All devices constituting the ventilation system of the forced exhaust port 24, the natural exhaust port 34, the heater 50, the air conditioner 60, the temperature sensors 72 and 74, and the gas detector 82 are connected to the control unit 40 having a microcomputer and the like. ing. Information obtained from the temperature sensors 72, 74, etc., the ventilation fan 26
The operation state of the ventilation fan 26 and the like is controlled based on the result of the arithmetic operation performed by the control unit 40 based on the information and the like regarding the operation state.
The control unit 40 is installed at an appropriate place in the house 10 together with a power distribution board and the like.

[Ventilation Port Opening / Closing Mechanism] A ventilation port opening / closing mechanism including the above-described forced air supply port 22, natural air supply port 32, forced exhaust port 24 and natural exhaust port 34 will be described. FIG. 2 shows the opening / closing mechanism of the natural air supply port 32, but the basic structure is the same for other ventilation ports such as the natural exhaust port 34.

A plate-shaped damper 32 having substantially the same area as the rectangular natural air supply port 32 is mounted so as to be pivotable about a pivot shaft 130. The turning shaft 130 is driven by a driving unit 200 including a motor and the like. Drive unit 20
As a specific structure, a mechanism for converting the number of rotations of the motor into a turning angle of the turning shaft 130 via a screw gear is adopted. The drive unit 200 can control the start and stop of the turning or the turning angle by a command from the control unit 40.

When the damper 32 is arranged orthogonal to the natural air supply port 32, the natural air supply port 32 is closed.
When the damper 32 is arranged in parallel with the natural air supply port 32, the natural air supply port 32 is fully opened. The opening amount of the natural air supply port 32, that is, the amount of ventilation changes depending on the inclination of the damper 32. The drive unit 200 is connected via an amplifier 210 and a detector 212 to temperature sensors 72 and 74 made of thermocouples.

The operation of the drive unit 200 can be directly controlled based on the temperature information detected by the temperature sensors 72 and 74. Specifically, a detection current associated with the temperature difference between the temperature sensors 72 and 74 is generated in the detector 212, and the detection current is amplified by the amplifier 210 and applied to the drive unit 200.
The damper 32 is turned at an angle proportional to the magnitude of the detected current. For example, as the temperature difference between the indoor space 12 and the outside world 16 is smaller, the opening of the natural air supply port 32 can be increased to increase the amount of ventilation.

However, it is also possible to send the detection information of the temperature sensors 72 and 74 to the control unit 40 and control the drive unit 200 from the control unit 40. When the control unit 40 controls the driving unit 200, the amplifier 210 may not be provided. However, as described above, if the drive unit 200 can be directly controlled without the intervention of the control unit 40, it is possible to appropriately control the opening amount of the natural air supply port 32 even when the control unit 40 becomes inoperable. Can be.

The above description has been made with respect to the natural air supply port 32. However, the natural exhaust port 34, the forced air supply port 22, and the forced exhaust port 24 may be switched between open and closed and adjust the opening amount by the same mechanism. Can be. [Opening direction urging means] Natural air supply port 32 and natural exhaust port 3
Regarding No. 4, when the opening amount is not controlled by the drive unit 200, the state automatically shifts to the fully open state.

The case where the opening amount is not controlled by the driving unit 200 is a state where the driving force of the motor or the like for controlling the opening amount does not act. For example, when the power supply is interrupted due to the power failure, the control unit 40 , A malfunction may occur, or the motor may break down. As shown in FIG. 3, an urging weight 134 is attached to one outer peripheral edge of a damper 132 provided in the natural air supply port 32. Since the biasing weight 134 is disposed on one side of the damper 132,
An imbalance in weight occurs on both sides of the damper 132.

When the damper 132 is in the vertical state (a), the gravity acting on the biasing weight 134 causes the damper 132 to turn to the side where the biasing weight 134 is disposed, ie, clockwise in the drawing. That is, the urging weight 134 is always urged in the direction of moving downward. When the damper 132 is in the horizontal state (b), the outer peripheral edge on the side without the biasing weight 134 contacts the lower surface of the stopper 136 fixed to the forced air supply port 22. Damper 13 in contact with stopper 136
In No. 2, further turning is prevented, and the damper 132 does not turn beyond the horizontal state. This state is a state where the forced air supply port 22 has opened the largest opening.

Therefore, when the swivel shaft 130 is operated by applying a driving force of a motor or the like to the forced air supply port 22, the opening amount can be set to an arbitrary amount from the fully open state (b) to the fully closed state (a). When it can be adjusted and the driving force of the motor or the like does not act at all, the gravity applied to the biasing weight 134
The damper 136 is automatically in a horizontal state, that is, a fully opened state (b).
Move to

[Another Embodiment of Opening Direction Energizing Means] FIG. 4 shows another embodiment of the opening direction urging means. The natural air supply port 32 is provided with a damper 132 and a turning shaft 130, and the turning shaft 130 is usually driven by a motor or the like as in the above-described embodiment. One end of the outer periphery of the damper 132 and the inner surface of the natural air supply port 32 are connected by a coil spring 138. When the damper 132 is in the vertical state, the coil spring 138 is extended.

Therefore, when no external force such as a motor is applied to the damper 132, the coil spring 13
As a result, the damper 132 is turned so that the damper 132 becomes horizontal. That is, the coil spring 138 applies a force to the damper 132 to urge the damper 132 from the vertical state, that is, the fully closed state, to the horizontal state, that is, the fully open state.

When the damper 132 is horizontal, the elastic force of the coil spring 138 supporting one end of the damper 132 and the weight of the damper 132 are balanced, and the damper 132
32 can be maintained in a horizontal state. [Forced ventilation operation] As shown in FIG. 5, when the heater 50 or the air conditioner 60 is operated, forced ventilation is performed.

The heater 50 warms the air in the indoor space 12 and exhausts the combustion gas. When the heater 50 is operating, it is better to reduce the amount of ventilation in order to prevent the warmed air from escaping to the outside world 16. 1
It is also necessary to discharge to 6 and take in fresh air. Therefore, when the heater 50 is in operation, it is necessary to maintain an appropriate ventilation rate so that the above-mentioned action is exerted to a necessary and sufficient degree. The specific value of the required ventilation varies depending on conditions such as the room temperature and the exhaust gas concentration.

The air conditioner 60 takes in the air in the indoor space 12, adjusts the temperature and humidity, and sends out the air to the indoor space 12 again. When the air conditioner 60 is operating, it is desirable to reduce the ventilation volume as much as possible so that the conditioned air does not leak to the outside world 16.
However, it is necessary to provide enough ventilation for the residents to be comfortable.

Therefore, when the air conditioner 60 is operated, it is necessary to maintain a properly controlled ventilation volume.
The specific required ventilation varies depending on conditions such as the room temperature. Although the heater 50 and the air conditioner 60 are not used, forced ventilation may be performed in order to adjust the amount of ventilation. For example, when performing work such as generating smoke or gas indoors, it is necessary to perform forced ventilation.

At the time of forced ventilation, the natural air supply port 32 and the natural exhaust port 34 are closed. Forced air supply port 22 and forced exhaust port 2
4 can be opened. The ventilation fan 26 is operated. as a result,
Fresh outside air 16 taken from the forced air supply port 22 is supplied to the indoor space 12. The air that has passed through the indoor space 12 is discharged from the forced exhaust port 24 to the outside world 16. Exhaust gas from the heater 50 is also exhausted from the forced exhaust port 24.

The temperature sensor 74 of the indoor space 12 and the outside world 16
Of the forced air supply port 2 based on the temperature difference between the
2 and the amount of opening of the forced exhaust port 24 and the exhaust force of the ventilation fan 26 are controlled, it is possible to perform a necessary amount of ventilation without greatly changing the temperature of the indoor space 12. If the gas detector 82 detects the concentration of exhaust gas components and the concentration of harmful gases such as carbon dioxide or carbon monoxide in the indoor space 12, the above-described ventilation rate is controlled to such an extent that the environment of the indoor space 12 is not deteriorated. Can be.

That is, the forced ventilation port 22 and the forced exhaust port 2
By appropriately controlling the operation of the ventilation fan 4 and the ventilation fan 26, an appropriate forced ventilation state that maintains the indoor space 12 in a comfortable environment state can be obtained. [Natural ventilation operation] As shown in FIG. 6, when the heater 50 and the air conditioner 60 are stopped, natural ventilation is performed.

The forced air supply port 22 and the forced exhaust port 24 are closed. The ventilation fan 26 is stopped. The natural air supply port 32 and the natural exhaust port 34 are opened. As a result, due to the action of the wind and natural convection of the outside world 16, the indoor space 1
The air that has entered 2 passes through the indoor space 12 and exits from the natural exhaust port 34 to the outside world 16. The opening amounts of the natural air supply port 32 and the natural exhaust port 34 are set to be larger than the opening amounts of the forced ventilation port 22 and the forced ventilation port 24, and are larger in the natural ventilation operation than in the forced ventilation operation. Ventilation operation is performed. The forced air supply port 22 and the forced exhaust port 24 may be closed, but can be left open so that natural ventilation can be performed from here, thereby increasing the total ventilation volume. .

In this natural ventilation state, the control section 40 does not need to perform any electrical control. However, if it is necessary to promote ventilation based on information from the temperature sensors 72 and 74 and the gas detector 82, the natural air supply port 32
If it is better to increase the opening amount of the natural exhaust port 34 and reduce the ventilation due to strong wind, etc., it is also possible to perform ventilation control such as reducing the opening amount of the natural air supply port 32 and the natural exhaust port 34. it can.

[Switching Between Forced Ventilation and Natural Ventilation] In the state where the control unit 40 is performing the control, the heater 50
By turning on the air conditioner 60 or the switch for operating the ventilation fan 26, the control unit 40 commands the operation of each device necessary for forced ventilation. A control panel or an input device connected to the control unit 40 may be configured so that necessary operations such as heating, cooling, and ventilation can be collectively input.

In order to artificially switch from the state of the forced ventilation to the natural ventilation, the switch of the heater 50 or the like is turned off or the changeover switch of the control panel is operated. However, when forced ventilation is not performed due to the above-mentioned power failure or equipment failure, artificial switching operation to natural ventilation cannot be performed.

However, in the ventilation system, automatic switching from forced ventilation to natural ventilation is performed. That is, for example, if the power supply is cut off due to a power failure,
In addition, the air conditioner 60 and the ventilation fan 26 are stopped, and the opening direction urging means is operated at the natural air supply port 32 and the natural exhaust port 34 to bring the natural air supply port 32 and the natural exhaust port 34 into a fully opened state. As a result, natural ventilation is automatically started with a large opening area secured.

The indoor space 12 automatically shifts from a controlled ventilation environment in forced ventilation to a ventilation environment in which sufficient ventilation can be performed by natural ventilation alone. Therefore, even if a power failure occurs during the night or power supply is cut off due to a natural disaster in a state where forced ventilation is being performed, a good ventilation environment can be provided without causing discomfort to residents due to environmental degradation. Can be maintained.

After the cause of the inability to perform the forced ventilation is removed, if the forced ventilation is restarted, the control unit 40 operates to remove the forced air from the natural ventilation through the natural air supply port 32 and the natural exhaust port 34. Port 22 and forced exhaust port 2
4, it is possible to immediately return to forced ventilation by the ventilation fan 26. [Position of Natural Exhaust Port] In the above embodiment, the natural exhaust port 34 is provided on the ceiling surface of the house 10. In the present invention,
The natural exhaust port 34 is formed above the neutral zone of the house 10. When the natural exhaust port 34 is formed above the house 10, the neutral zone moves upward as indicated by AB in FIG. As the outside air flows in from below the neutral zone and the air in the room flows out from above the neutral zone, when the neutral zone moves upward, as shown in FIG. To increase the air supply to the headspace,
Fresh air can be introduced into the upper space.

[0056]

According to the ventilation system for a house according to the present invention, the natural ventilation operation and the forced ventilation operation can be easily and quickly switched by the ventilation control means. In the forced ventilation operation using the ventilation fan and the natural ventilation operation without using the ventilation fan, the opening amount of the ventilation port, that is, the ventilation amount or the ventilation condition suitable for each is set, so every time the natural ventilation is switched to the forced ventilation In addition, the troublesome work of manually opening and closing individual ventilation openings is not required.

Even if the ventilation fan stops for some reason,
The ventilation control means is activated and immediately shifts the opening of the ventilation opening to a state suitable for natural ventilation, so that even if the ventilation fan is stopped, the opening of the ventilation opening remains in the forced ventilation state where the opening amount is limited. Thus, the problem of causing the resident to feel unpleasant or deteriorating the indoor environment is eliminated. Furthermore, the ventilation system of a house according to the present invention increases the ventilation of natural ventilation by forming a natural exhaust port above the neutral zone of the house, and increases air supply to the upper space, Fresh air can be introduced into the upper space.

[Brief description of the drawings]

FIG. 1 is an overall structural diagram of a ventilating device representing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing an operation mechanism of a damper.

FIG. 3 is a sectional view showing an opening direction urging means of a ventilation port.

FIG. 4 is a sectional view showing another embodiment of the opening direction urging means.

FIG. 5 is an overall structural diagram showing a forced ventilation operation.

FIG. 6 is an overall structural diagram showing a natural ventilation operation.

FIG. 7 is an illustrative view showing a neutral zone.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 House 12 Indoor space 14 Wall surface 16 External world 22 Forced air supply port 24 Forced exhaust port 32 Natural air supply port 34 Natural exhaust port 50 Heater 60 Air conditioner 72, 74 Temperature sensor 82 Gas detector

Claims (2)

[Claims] A system for ventilating between the indoor space of a house and the outside world, comprising a forced openable / closable air supply port for taking outside air from the outside world into the indoor space, and exhausting room air from the indoor space to the outside world. Open / closed forced exhaust port, forced ventilation means with a forced air supply or ventilation fan located at the forced exhaust port, openable / closable natural air supply port that takes in outside air from the outside to the indoor space, and indoor space A natural ventilation means having an openable and closable natural exhaust port for exhausting room air from the outside to the outside world, and in conjunction with the operation of the ventilation fan, the forced air supply port and the forced exhaust port are opened when the ventilation fan is activated. Ventilation control means for adjusting the amount of ventilation to perform a forced ventilation operation, and when the ventilation fan is not operating, the ventilation control means for performing the natural ventilation operation by opening the natural air supply port and the natural exhaust port, Neutral of the said house A residential ventilation system formed above the obi. 2. The ventilation system for a house according to claim 1, wherein the natural exhaust port is formed on a ceiling surface provided in the house.