JP2003254570A - Ventilation system for housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation system for sure ventilation in housing in which unnecessary ventilation is suppressed, energy consumption is comfortably suppressed unnecessary energy is not consumed under a situation suitable for natural ventilation, and utilization of natural resources and improvement of indoor air quality are considered. <P>SOLUTION: A ventilation fan 1 for sanitary exhaust ventilation is provided, operation is switched by ventilation switches 5 and 6, and the opening of an air supply port with a motor damper whose opening can be switched to take outside air into a room is switched by a thermostat. A sensor for detecting indoor temperature and a sensor for detecting outside air temperature are provided, an opening signal of the motor damper from each room, a status signal of on or off or strong or weak of the ventilation switch, and a signal from the sensors for detecting temperature are input to a control device 10, and an airflow of the ventilation fan 1 is controlled according to combination of them to obtain a predetermined ventilation volume. <P>COPYRIGHT: (C)2003,JPO

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 such as an apartment house. When the exhaust type ventilation fan for sanitary is also used for general ventilation in a dwelling unit, the intake amount of outside air of each room and the ventilation fan. Ventilation in the dwelling unit can be surely performed by automatically determining the exhaust air volume of, and by not performing unnecessary ventilation, the generation of various loads associated with ventilation can be suppressed to a minimum, The present invention relates to a ventilation system for a house that can efficiently save energy and improve indoor air quality.

[0002]

2. Description of the Related Art Conventionally, there have been the following ventilation systems for houses, for example, collective houses. That is, on the wall of each room facing the outside air, an air supply port (natural air supply port) for taking in the outside air from the outside is provided, and a bath, toilet, etc.
The duct ventilation fan for exhausting the sanitary system is constantly operated with a small air volume to create an air flow from each room to the sanitary system through the corridor, etc. There was an air volume ventilation system. In such a ventilation system, simultaneous ventilation of all rooms is performed with a constant air volume, regardless of the physicochemical required ventilation volume that changes according to various conditions in each room such as room temperature and indoor air quality.

[0003]

According to the above-mentioned conventional method, a certain amount of ventilation can be achieved from the physicochemical viewpoints such as room temperature and indoor air quality of each living room, regardless of the magnitude of the required ventilation. Will be done. That is, when the room temperature is high and a large amount of ventilation is required, the ventilation amount becomes insufficient, and when the temperature is low, the ventilation amount becomes excessive. When the ventilation amount is excessively large, there is a large part in which the electric power consumed by the operation of the ventilation fan is wasted. Also, for ventilation, outdoor air comes directly into the room, so during the season when the room is heated and cooled, the ingress of outside air becomes a load for cooling and heating, and the energy required for cooling and heating is added. Consumed.

In a house using such a small air volume ventilation system at all times, it is considered a waste of electricity to ventilate a room that is not in use, and some residents turn off the ventilation fan itself. In some cases, it is in a state where it cannot function as the original ventilation system. Also,
Even though the outside air temperature is low in the evening or at night in summer, etc., heat may be trapped in the room due to the low ventilation volume, resulting in high temperature. Furthermore, it is not possible to deal with the case where the amount of chemical substances emitted from building materials, furniture, etc. increases at high temperatures such as summer.

The present invention has been made in view of the above-mentioned problems, and it provides comfortable ventilation and energy consumption by performing reliable ventilation in a house, suppressing unnecessary ventilation, and increasing air volume when necessary. Try to provide a suppressed ventilation system.

Further, in the conventional constant-ventilation method based on the assumption of continuous operation for 24 hours, the temperature condition suitable for natural ventilation is provided in the middle seasons such as spring and autumn, and the nighttime in summer. In some cases, the resident who stayed indoors for a long time did not notice the temperature change of the outside air and was performing mechanical ventilation using a ventilation fan.

Another object of the present invention is to improve such a condition. Specifically, under a condition suitable for natural ventilation, the occupant is informed of it and the mechanical ventilation is stopped. By encouraging natural ventilation, we try to provide a ventilation system that uses the blessings of nature without wasting energy.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and claim 1 thereof provides a thermostat which operates at room temperature in each living room, and supplies the outside air to the living room by the thermostat. In addition to controlling the opening of the motor damper provided at the air supply port, the opening signal of the motor damper and the on / off or strength signal from the sanitary ventilation switch are input, and the ventilation fan is selected according to the combination of these inputs. We adopted a control means that considers energy saving and indoor air quality, which is characterized by controlling the air flow of

According to a second aspect of the present invention, in the ventilation system according to the first aspect, a room temperature sensor other than the thermostat is provided in a living room representing the room temperature of the entire dwelling unit, for example, a living room, and the motor damper is used. An outside air temperature sensor is provided at a position inside which is constantly exposed to air supplied from outside. Then, when the representative room temperature value, the outside air temperature value, and the deviation thereof fall within a predetermined range, a temperature suitable for natural ventilation is provided to a person in the room by means of lighting a lamp or the like. Let us know that
It is recommended to stop the mechanical ventilation and open the windows.

For example, when the temperature is high due to heat being trapped inside the room at night in summer, etc. The unnecessary cooling is stopped by taking the cold air into the room, and the so-called outside air cooling is performed to suppress energy consumption and improve the indoor air quality. In such a method, if you always close the windows and rely on a small amount of mechanical ventilation in an apartment house, you will not be able to experience the natural state such as changes in the outside air temperature, and you will rely on mechanical cooling means such as an air conditioner. It is useful for improving the apt condition.

According to the third aspect of the present invention, for example, when the bathroom and the toilet are used at the same time, a maximum amount of ventilation air volume is requested by the sanitary ventilation switch, and in response to this, the ventilation fan also performs exhaust operation at the maximum air volume. Will be done. In such a case, for example, in the case of a ventilation system that relies on the air supply port with a motor damper in each room to supply air corresponding to the exhaust of a sanitary system, it is assumed that the motor dampers are all in the minimum opening state. However, the opening area may be insufficient in order to take in the air supply amount commensurate with the exhaust gas amount from the air supply port. Insufficient opening area of the air supply path causes a negative pressure inside the room relative to the atmospheric pressure outside, that is, an increase in so-called indoor / outdoor differential pressure, which causes problems such as difficulty in opening / closing the front door and whistling of the sash.

[0012] Claim 3 of the present invention provides means for avoiding the occurrence of such a state, in which the ventilation fan air volume control device causes the ventilation fan to perform a large air volume ventilation of a certain level or more. In this case, at the same time, a signal is issued to the motor damper in each room so that the motor damper is forced to fully open, and the air supply port is set to the maximum opening degree, thereby suppressing an increase in the indoor / outdoor differential pressure.

A fourth aspect of the present invention relates to the balance of air supply and exhaust of the entire dwelling unit including the kitchen system. For example, in the ventilation of the kitchen system, a so-called third type is used in which a range hood fan that only exhausts air and a natural air supply port that takes in outside air by the negative pressure in the room generated by the exhaust are used.
When the seed ventilation method is adopted, it is necessary to perform coordinated control with the continuous ventilation system that takes charge of ventilation in the living room. When the kitchen system is the 3rd class ventilation system, the air supply for the kitchen system is generally an independent route that connects the dedicated air supply duct from the outdoor air intake to the air intake of the kitchen. Performed by. This duct and air supply port should be installed with a sufficient cross-sectional area and opening area to allow the air supply corresponding to the displacement of the range hood fan to pass through. It uses the same principle as the constant ventilation system in terms of taking in outside air.

1. The indoor-outdoor differential pressure inside a dwelling unit affects the entire dwelling unit, regardless of the factors that cause it. Specifically, even if the kitchen range hood fan is operated and exhausted, the supply of air corresponding to the exhaust volume is not entirely supplied from the air supply port of the kitchen, and there is a motor damper in each room. Even from the air supply port, air is supplied by pulling part of it. This is related to the fact that the kitchen range hood fan exhausts a large amount of air to discharge the combustion exhaust gas, and generally corresponds to 3 to 4 times the amount of air required for constant ventilation of the entire dwelling unit. This is because the range hood fan is operating at the air volume.

Further, in order to prevent the air in the kitchen containing odors and splashes of oil and fat from leaking into other living rooms, the air supply port dedicated to the kitchen supplies a smaller amount of air than the amount of exhaust air. The size and the like are considered, and the amount of air supply corresponding to the difference is supplied from the living room system through a corridor or the like. This creates a flow of air from the living room system to the kitchen exhaust system. In the case of such a ventilation system, when the kitchen range hood fan is operated and the air intake of the living room system is in the minimum opening state, the air velocity passing through the air intake increases and It produces an unpleasant noise such as whistling.

A fourth aspect of the present invention relates to means for avoiding such a situation, and when the kitchen range hood fan is operated, the air volume control device of the ventilation fan controls each room. A signal is issued to the motor damper so as to forcefully open it, and the air supply port is set to the maximum opening degree, thereby suppressing an increase in the indoor / outdoor differential pressure and suppressing noise generation from the air supply port.

According to the fifth aspect of the present invention, it is possible to meet the variable demand of the ventilation amount which varies depending on various factors such as the resident's age and physical condition. For example, even in the case of indoor air quality, if there are smokers among residents, if the number of residents increases, the amount of carbon dioxide increases, or if the furniture or open stoves generate harmful chemical substances, the air volume of continuous ventilation itself. When we wanted to increase the air flow rate, the conventional constant ventilation system had a fixed air volume and there was no way to increase it.

Also, when more than 10 years have passed since the construction of a new building and the emission of chemical substances from building materials and furniture decreased, and the number of residents decreased due to changes in the family structure, we would like to reduce the ventilation rate. There is no way to think about it, and it is possible to turn off the power and stop ventilation.

This method responds to the variable ventilation volume demands of the occupants, and its method is to increase or decrease the ventilation volume of the entire system by the air volume control device of the ventilation fan. To have
It is configured such that the switching can be performed with one touch by a simple switch provided on the surface of the control device.

Thus, for example, when the number of residents decreases, the ventilation air volume can be reduced as a whole, an appropriate ventilation volume can be obtained, and energy loss accompanying ventilation can be suppressed. In addition, when the number of residents increases or when a smoker lives, etc., the ventilation air volume can be increased as a whole to secure the required ventilation volume.
This function is effective even when the resident changes due to transfer, moving, etc., and it can be adjusted with one touch to an appropriate ventilation volume corresponding to the family composition of the new resident, and the ventilation system reform is minimal. This will help improve the distribution of residential units as real estate.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Specific examples of embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a residential ventilation system according to the present invention. 1 is
When ventilating sanitary systems such as toilets, bathrooms, and washrooms with an intermediate-mounted duct ventilation fan that ventilates the entire dwelling unit and sanitary systems, each switch installed next to each entrance door, specifically, It can be operated by operating the toilet ventilation switch 5, the bathroom ventilation switch 6 and the washroom ventilation switch 7. This ventilation fan 1
From the exhaust ports 2, 3, 4 of the toilet, bathroom, and washroom,
It inhales and exhausts the air in each room.When using the bathroom, it discharges water vapor and moisture in the bathroom, when using the toilet, odors in the toilet, and when using the bathroom, vapor and water in the bathroom. Drain moisture. The air sucked from each sanitary room is sent through the exhaust duct 8 by the ventilation fan 1 and is exhausted to the outside from the pentocap 9 provided on the balcony.

In FIG. 1, the symbol BR. 1-BR. 3 represents bedrooms 1 to 3, and the symbol LD represents a living / dining room. In the example of the dwelling unit in FIG. 1, the bedroom has a BR. 1
~ BR. 3 rooms up to 3, living and dining LD 1
It is a house with a total of 4 rooms. In these rooms,
Each has a ventilation port for taking in outside air and a thermostat that detects the room temperature and operates. Further, the ventilation port is provided with a motor damper for switching the opening degree of the air supply port on the indoor side.

BR. In 2, 2, 16 is an air supply port with a motor damper provided on the indoor side, 15 is an outdoor pentocap paired with the air supply port, and the ventilation port is provided by the indoor air supply port 16 and the outdoor pentocap 15. Form. Also, 1
A thermostat 7 operates a motor damper built in the air supply port 16. The thermostat 17 is connected to the motor damper in the air supply port 16 by wiring, and from there, the main controller 1 which is a control device for controlling the ventilation fan 1 is further connected.
Connected to 0.

BR. 1, reference numeral 22 is an air supply port with a motor damper provided on the indoor side, 21 is an outdoor pentocap paired with the air supply port, and 23 is a thermostat for operating a motor damper built in the air supply port 22. BR. Three
19 is an air supply port with a motor damper provided on the indoor side,
Reference numeral 18 denotes an outdoor pentocap which forms a pair with the air supply port, and 20 denotes a thermostat which operates a motor damper incorporated in the air supply port 19. BR. 1 and BR. 3 as well, BR. Similar to 2, the thermostats 23 and 20 are connected to the motor dampers in the air supply ports 22 and 19 by wiring, and from there are further connected to the main controller 10 which is a control device for controlling the ventilation fan 1.

Reference numeral 12 is an LD, 12 is an air supply port with a motor damper provided on the indoor side, 11 is an outdoor pentocap paired with the air supply port, 13 is a thermostat, and the air supply port 1
1 to operate the built-in motor damper. Also in LD, BR. 1-BR. Similar to 3, thermostat 13
Is connected to the motor damper in the air supply port 12 by wiring, and from there is further connected to the main controller 10 which is a control device for controlling the ventilation fan 1.

The thermostat 13 used in the LD
Is equipped with a natural ventilation recommended lamp 14 for promoting natural ventilation to the occupants when the indoor and outdoor temperature conditions are suitable for natural ventilation. The thermostat 13 is provided with an independent room temperature sensor in addition to the thermosensor for moving the motor damper built in the air supply port 12, and sends the room temperature information in the LD detected here to the main controller 10. The air supply port 12 of the LD is provided with a temperature sensor for detecting the temperature of the outside air, and sends the outside air temperature information detected here to the main controller 10.

In the constant ventilation system, the ventilation fan 1 for ventilation of the entire dwelling unit is always operated except when the windows are opened to provide natural ventilation, and although the air volume is large or small, the air supply is always provided. Outside air is taken in from the mouth.
Therefore, the temperature of the outside air can be detected by setting the temperature sensor in the air supply port.

The main controller 10 is provided with an input terminal for accepting the on / off state of the ventilation switch of each room of the sanitary system and the setting state of strength. Wirings from the toilet ventilation switch 5, the bathroom ventilation switch 6, and the washroom ventilation switch 7 are connected to this input terminal, and the operating state of each switch is constantly monitored. Further, the main controller 10 is provided with an input terminal for receiving the opening information of the motor damper of the air supply port of each room. This input terminal has B
R. 1 air supply port 22, BR. 2 air inlet 16, BR. Three
The wirings from the motor dampers provided in the air supply port 19 of the LD and the air supply port 12 of the LD are connected to constantly monitor the opening state of the motor damper.

The main controller 10 controls the opening of the motor damper at the air supply port of each room, the state of each sanitary ventilation switch, the temperature of the outside air detected at the air supply port of the LD, and the LD.
According to the temperature inside the LD room detected by the thermostat of
The air volume of the ventilation fan 1 and the opening degree of the motor damper provided at the air supply port of each living room are controlled according to a predetermined procedure.

Next, the operation of this ventilation system will be described. In the steady state, BR. 1, BR. 2, BR.
3 and the motor dampers provided at the air supply ports of the LD have the minimum opening, and this opening state is the main controller 10
The air flow rate of the ventilation fan 1 is set to an air flow rate corresponding to these and the operation is performed. The set air volume at this time is stored in the main controller 10 in advance, and normally the operation is performed at the minimum air volume.

Next, for example, BR. When the room temperature of 2 rises and the room temperature detected by the thermostat 17 exceeds the temperature value preset in the thermostat 17, the thermo contact is turned on and the motor damper in the air supply port 16 is operated to increase the opening degree. To do. As the thermostat of each living room, one that operates so as to output ON when the detected room temperature exceeds the set temperature is used.

BR. The information that the motor damper opening degree in the second air supply port 16 is large is transmitted to the main controller 10, and the main controller 10 follows the predetermined procedure to change the air volume of the ventilation fan 1 to the opening degree of one motor damper. It is increased to correspond to the state where it becomes large. BR. 1
And BR. 3 and the LD thermostat and the air damper in the air supply port operate in the same manner.

The main controller 10 determines and controls the air volume of the ventilation fan 1 in accordance with the combination of the opening states of the motor dampers in the respective rooms. For example, BR. 1, B
R. 2, BR. When the openings of the motor dampers of 3 and LD are all large, the ventilation fan 1 is controlled to operate at the maximum air volume. Depending on the combination of these inputs,
How to control the air volume of the ventilation fan 1 is stored in the main controller 10 in advance.

In the conventional ventilation system in which a motor damper for switching the opening degree is not provided at each air supply port, when the air volume of the ventilation fan 1 is increased, the air supply volume of each room increases at the same rate. This results in an increase in ventilation volume in a room that does not require an increase in air supply volume, which is not preferable from the viewpoint of comfort and energy saving.
According to the present invention, when the room temperature of each room changes, the motor damper opening of the air supply port is increased only in the room where the temperature rises to increase the air supply amount to that room, and The air volume corresponding to the increase in the supply air amount can be covered by increasing the exhaust air volume of the ventilation fan 1. Therefore, it is possible to perform individual control by changing the ventilation air volume for each room.

Next, the operation when the sanitary ventilation switch is operated will be described. Now, for example, when the toilet ventilation switch 5 is operated, the information is transmitted to the main controller 10. The main controller 10
BR. 1, BR. 2, BR. 3 and LD, the motor damper opening degree information of the air supply port of each room system is combined with the operating conditions of the bathroom ventilation switch 6 and the washroom ventilation switch 7, and the air volume of the ventilation fan 1 is determined for operation. In addition, when the air volume value determined in the above procedure exceeds a certain value, the main controller 10 sends a signal to the air inlet motor dampers of each room so that the air supply motor dampers are fully opened to supply all the room air. Forcibly open the mouth air motor damper regardless of the state of the thermostat in each room.

This is to secure an air supply path commensurate with an increase in the air volume, and by fully opening the air supply motor damper,
Obtain a sufficient opening area. Recently built houses are
The airtightness of the dwelling unit has been increased to save energy, and if you try to exhaust the indoor air with a ventilation fan, you can take in an appropriate amount of air from the outdoors into the room
An air supply port with a sufficient opening area is required. If there is not a sufficient opening air supply port, the inside of the dwelling unit will have an abnormal negative pressure compared to the outside, and it will be difficult to open and close the entrance door, the trap water in the toilet will break, and sash whistling will cause abnormal phenomena. Occurrence occurs, and the living performance of the dwelling unit is significantly impaired, and it becomes very difficult to live.

This function is to cope with this. For example, in the case where the bathroom and the toilet, which require the most ventilation in the sanitary system, are used at the same time, when combined with the constant ventilation air volume of each room, it is considerably large. Air volume exhaust is required.
In such a case, if the air inlet opening area of each living room is widened as in the present invention, a sufficient air supply route can be secured, and the indoor air supply does not become an abnormal negative pressure. It can provide well-balanced ventilation.

As described above, in the present invention, the toilet, the bathroom,
A ventilation fan for exhausting sanitary systems such as washrooms,
The ventilation switch provided in each room of the sanitary system can switch the operation. In each living room, such as a living room and a bedroom, a thermostat that operates by detecting the room temperature and an air supply port with a motor damper that can switch the opening to take in outside air are provided in the living room, and the opening of the motor damper can be adjusted by the thermostat. Switch. An indoor temperature detecting sensor and an outside air temperature detecting sensor are separately provided in the living room. An opening signal of the motor damper from each living room, a state signal of on / off or strength of the sanitary ventilation switch, a signal from the living room room temperature sensor and a signal from the outside air temperature sensor are provided as a control device, and by this control device, A ventilation volume control signal corresponding to the combination of the inputs is output to control the air volume of the ventilation fan to obtain a predetermined ventilation volume. Also, depending on the indoor temperature and the outside air temperature,
A signal is emitted from the control device to turn on a lamp,
At the discretion of the resident, the ventilation fan was stopped and the window was opened.
Encourage natural ventilation.

According to the present invention, with such a configuration, the ventilation amount is automatically set according to the temperature conditions inside and outside the house and the usage conditions of the toilet, bathroom, washroom, etc., and no mechanical ventilation is required. Occasionally, a signal is given to the occupants to perform natural ventilation, and a ventilation system for the house is obtained to save energy and improve indoor air quality.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a ventilation system for a house according to the present invention.

[Explanation of symbols]

1 ... Exhaust fan, 2 ... Toilet exhaust port, 3 ... Bathroom exhaust port, 4 ...
Toilet exhaust port, 5 ... Toilet ventilation switch, 6 ... Bathroom ventilation switch, 7 ... Toilet ventilation switch, 8 ... Exhaust duct,
9, 11, 15, 18, 21 ... Pento cap, 10 ...
Main controller, 12, 22 ... Air supply port, 13, 1
7, 20, 23 ... Thermostat, 14 ... Natural ventilation recommended lamp, 16, 19 ... Air supply port,

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasushi Shibanuma             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Takashi Fukumura             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Michiya Suzuki             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Hideo Ishibashi             4-3, Hatchobori, Chuo-ku, Tokyo Warm and cool             Industry Co., Ltd. (72) Inventor Toshikazu Sakuma             4-3, Hatchobori, Chuo-ku, Tokyo Warm and cool             Industry Co., Ltd. (72) Inventor Koji Hirauchi             1680 Maeda Maeda, Ibaraki-cho, Higashi-Ibaraki-gun, Ibaraki Prefecture             Business in Mito factory F term (reference) 3L056 BD02 BE07 BF06                 3L061 BC07 BD02

Claims (5)

[Claims] 1. A ventilation fan for exhausting air in a dwelling unit, an air supply port provided in each living room with a motor damper capable of controlling an opening for supplying outside air to the living room, and each living room A thermostat that is provided to detect the room temperature and operates the motor damper, a ventilation switch that is operated when performing ventilation, an open / close signal from the motor damper, and an on / off or strength signal from the ventilation switch as input, and these inputs And a control device for controlling the air flow rate of the ventilation fan according to the combination of, and the air flow rate of the ventilation fan is controlled by the control device according to a procedure predetermined according to the combination of the inputs. Ventilation system. 2. A sensor for detecting an indoor temperature is provided in a living room, a sensor for detecting an outside air temperature is provided in the motor damper, and an output signal from each sensor is input to the control device. The control device controls the air volume of the ventilation fan according to the detection of the indoor temperature and the outdoor temperature,
2. The ventilation system according to claim 1, wherein when the room temperature and the outside air temperature are in a certain range, a signal for recommending to the person in the room to open the window and perform natural ventilation is emitted. 3. The motor damper operates by receiving an opening degree control signal from the control device, and the control device is
When the air volume control value of the ventilation fan is a certain value or more determined according to the combination of the on / off or the strength signal from the ventilation switch, a fully open signal is issued to each room motor damper,
The ventilation system according to claim 1, wherein all the motor dampers are controlled so as to be fully opened. 4. The motor damper operates by receiving an opening degree control signal from the control device and inputs an operation signal of a ventilation fan to the control device to operate the ventilation fan. The ventilation system according to claim 1, wherein a full open signal is issued to the room motor damper to control the full motor damper to be fully open. 5. The ventilation system according to claim 1, wherein the control device is provided with a switch that can switch the control output of the ventilation fan with one touch.