JP6286796B2 - Building ventilation system - Google Patents

Description

  The present invention relates to a building ventilation system.

  2. Description of the Related Art Conventionally, a system for ventilating a living room of a highly airtight and highly insulated house by supplying air is known. For example, Patent Document 1 proposes a residential ventilation system apparatus as follows. The residential ventilation system apparatus described in Patent Document 1 includes a common space that communicates with each room through a vent, a supply air main duct that has a blower for taking in outside air, and a blower for exhaust. And an exhaust main duct. This residential ventilation system device is switchably connected to an air supply main duct and an exhaust main duct, and includes a sub-duct extended to each room, and a ventilation port provided in each room is connected to the sub-duct. Communicate.

  In the above-described residential ventilation system apparatus, air supply or exhaust of each room is selectively performed by a sub duct communicating with the ventilation port of each room. In this apparatus, outside air is introduced into a room by supply air, air in the room flows to another room through a shared space, and exhaust is performed in the other room. In this way, a ventilation flow in which outside air flows between the rooms through the shared space is formed, so that a plurality of rooms in the building can be ventilated.

JP 11-173623 A

  In a highly airtight and highly insulated house, heat is likely to be trapped in the room due to the performance of the building. Since such a room's heat is uncomfortable for the occupants who returned home at night, it is conceivable that outside air, which is cooler than the air in the room, is taken into the room by ventilation to eliminate the heat. However, since the residential ventilation system apparatus described above performs ventilation between rooms through a common space, the ventilation efficiency is not always sufficient, and it is not possible to realize a comfortable indoor environment such as taking time to eliminate the heat trap. difficult. It may be possible to eliminate the heat-up by opening the windows in the living room, but there are problems such as crime prevention, soundproofing, eye-proofing, invasion of rain and air pollutants, etc., to realize a comfortable indoor environment. Is difficult. In addition, although it is possible to use a cooling device, it is desirable to use the cooling device to the minimum necessary from the viewpoint of promoting energy saving.

  The present invention has been made in view of the circumstances as described above, and provides a building ventilation system capable of efficiently reducing the heat accumulation in a room at night with less energy and realizing a comfortable indoor environment. It is an issue.

  In order to solve the above-described problems, a building ventilation system according to the present invention is provided with an air inlet and an outlet provided in a room in a building, and an outside air introduction provided on an outer wall of the building and capable of introducing outside air into the building. A ventilation means for sending outside air introduced into the building from the outside air introduction opening to the air supply opening, and a predetermined time zone for living in the room from night to next morning before the start time of the q and q time zones The predetermined time zone is p, the predetermined time zone before the end time including the end time of the q time zone is r (where q> r), and the comparison temperature to be compared with the predicted lowest temperature of the next morning outside air is a, When b and c (where a <b <c) and the predicted minimum temperature of the next morning outside air is less than a, the first operation mode in which the blowing operation of the blowing means is stopped in the time zone of p and q When the predicted minimum temperature of the outside air the next morning is above a and below b, p and q In the second operation mode in which the blowing means is blown, the predicted morning temperature of the next morning is greater than or equal to b and less than c, the blowing means is blown in the time zone of p and r, and the end of the time zone of p In the third operation mode in which the blowing operation of the blowing unit is stopped from the time to the start time of the r time zone, and when the predicted minimum temperature of the outside air in the next morning is equal to or higher than c, the blowing unit is blown in the p time zone. , A fourth operation mode for stopping the air blowing operation of the air blowing means in the time zone q, operation information storing means for storing the operation information, and an operation selected from the operation information stored in the operation information storing means Control means for controlling the operation of the blowing means based on the mode.

  In this building ventilation system, the operation information storage means is a printed matter, and the control means has a setting switch for inputting a start time and an end time of the air blowing operation of the air blowing means, and is based on the selected operation mode. In addition, it is preferable to perform the air blowing operation of the air blowing means in accordance with an input from the setting switch.

  Further, in the building ventilation system, the operation information storage means is provided as a storage unit for storing the operation information in the control means, and the control means further inputs outside air information for inputting a predicted minimum temperature of the next morning outside air. The input unit and the predicted minimum temperature input from the outside air information input unit are compared with the comparison temperature stored in the storage unit, and one operation mode is selected from the operation information stored in the storage unit. And an operation control unit for controlling the operation of the blowing means.

  Moreover, in this building ventilation system, it is preferable that the said ventilation means is the air volume which can obtain the frequency | count of ventilation of the said room more than twice / hour.

  Furthermore, in this building ventilation system, an opening adjustment grill provided at the air supply opening and capable of adjusting an air supply amount by changing an opening area of the air supply opening, and connected to the air supply opening, An air supply pipe for supplying outside air from the air blowing means to the air supply port, and the air supply pipe is opened when the supply air pressure of the air supply pipe exceeds a predetermined pressure, and the outside air in the pipe is brought out of the pipe. It is preferable to have discharge means for discharging.

  According to the building ventilation system of the present invention, a comfortable indoor environment can be realized by efficiently reducing the heat accumulation in the room at night with less energy.

It is the figure which showed the building which applied one Embodiment of the building ventilation system of this invention. (A), (b), and (c) are graphs showing the relationship between the minimum temperature of the outside air at night and the room temperature of the room. (A) is the figure which showed the time transition of the room temperature of a room when controlling operation | movement of the ventilation means in 2nd operation mode, (b) is when operation of the ventilation means is controlled in 3rd operation mode. It is the figure which showed the time transition of the room temperature of a living room. It is the table | surface which showed an example of the operation information recorded on the printed matter which is one Embodiment of an operation information storage means. It is the figure which showed the building which applied another one Embodiment of the building ventilation system of this invention. It is the figure which showed the building which applied another one Embodiment of the building ventilation system of this invention. It is the figure which showed the building to which another one Embodiment of the building ventilation system of this invention was applied.

  FIG. 1 is a diagram showing a building to which an embodiment of a building ventilation system of the present invention is applied.

The building ventilation system according to the present embodiment includes an air supply port 2 and an exhaust port 3 provided in the living room 1 in the building, and an outside air introduction port 4 provided on the outer wall 5 of the building and capable of introducing outside air into the building. Prepare. The building ventilation system also includes a blowing means 6 that sends outside air introduced from the outside air introduction port 4 into the building to the air supply port 2. Furthermore, the building ventilation system includes operation information storage means 8 and control means 9. The operation information storage unit 8 stores operation information including the following four operation modes.
The first operation mode in which the blowing operation of the blowing means 6 is stopped in the time zone of p and q when the predicted minimum temperature of the outside air in the next morning is less than a.
A second operation mode in which the blowing means 6 is blown in the time zone of p and q when the predicted minimum temperature of the outside air in the next morning is a or more and less than b.
If the predicted minimum temperature of the outside air in the next morning is not less than b and less than c, the blowing means 6 is blown in the time zone of p and r, and the blowing means is from the end time of the time zone p to the start time of the time zone r. 6 is a third operation mode for stopping the air blowing operation. And when the predicted minimum temperature of the outside air in the next morning is equal to or higher than c, the fourth operation mode is such that the blowing means 6 is blown in the time zone p and the blowing operation of the blowing means 6 is stopped in the time zone q.

  In the above operation mode, q is a predetermined time zone for living in a room from night to the next morning, p is a predetermined time zone before the start time of the q time zone, and is an end time before the end time including the end time of the q time zone. The predetermined time zone is r (where q> r). Further, the comparison temperatures to be compared with the predicted minimum temperature of the outside air the next morning are a, b, and c (where a <b <c).

  The control unit 9 controls the operation of the blower unit 6 based on the operation mode selected from the operation information stored in the operation information storage unit 8.

  More specifically, in the building shown in FIG. 1, a plurality of living rooms 1 such as a living room and a bedroom are provided in contact with each other via a corridor 30. In each living room 1, an air supply port 2 for supplying air into the living room 1 is provided in the ceiling, and an exhaust port 3 for exhausting air in the living room 1 is provided in the wall. In addition, as the exhaust port 3, an open space such as a gap between the joinery and the floor can be used.

  An outside air introduction port 4 for taking in outside air is provided on the outer wall 5 of the shed 31 of the building, and fresh air can be introduced into the building from the outside air introduction port 4. An air supply pipe 11 is provided in the shed 31. The air supply pipe 11 connects the outside air inlet 4 and the air inlet 2, and the outside air inlet 4 and the air inlet 2 communicate with each other via the air inlet pipe 11. In the middle of the air supply pipe 11, a blower fan 7 is provided as a blower unit 6 that blows air. As the blower fan 7, for example, a fan that can be operated with an air volume that can obtain the ventilation frequency of the living room 1 at least twice / hour is desirably employed. By adopting such a blower fan 7, ventilation can be performed more reliably, and a comfortable indoor environment can be realized. The air supply pipe 11 is provided with a filter device 40 at a position on the outside air inlet 4 side of the blower fan 7. In the filter device 40, foreign substances such as dust and dust contained in the outside air introduced from the outside air introduction port 4 are removed.

  In the building ventilation system of the present embodiment, a control panel 50 that controls the operation of the blower fan 7 such as operation, stop, and adjustment of the air volume is provided on the wall surface of the hallway 30 as the control means 9. The control panel 50 is electrically connected to the blower fan 7.

  When the operation of the blower fan 7 is started, fresh outdoor air (outside air) is taken in from the outside air inlet 4. The outside air taken in from the outside air introduction port 4 is sequentially sent to the air supply port 2 through the air supply pipe 11 through the filter device 40 and the blower fan 7 and is supplied into the living room 1. The air in the living room 1 is exhausted from the exhaust port 3. That is, air flows through the path of the outside air inlet 4 → filter device 40 → blower fan 7 → air supply port 2 → room 1 → exhaust port 3 so that the room 1 is ventilated.

  Control of the operation of the blower fan 7 by the control panel 50 is performed based on an operation mode selected from the operation information stored in the operation information storage unit 8. The operation information is information regarding the operation mode of the air blowing operation of the air blowing means 6 such as the air blowing fan 7 and has the above-described four operation modes. Four operation modes are prepared in consideration of the degree of nighttime heat so that the nighttime room 1 can be efficiently reduced with less energy and a comfortable indoor environment can be realized. . The degree of night heat varies throughout the year. According to the degree of nighttime heat accumulation, the year is divided into four periods, for example, winter, spring / autumn, summer, and midsummer, and the four operation modes are associated one-to-one. Specifically, the first operation mode, the second operation mode, the third operation mode, and the fourth operation mode correspond to the winter, spring / autumn, summer, and midsummer, respectively, in the order of description. The air blowing operation of the air blowing means is performed based on the operation mode corresponding to the period. However, for example, in the spring and autumn seasons, there are days as hot as the summer seasons. On such days, the degree of heat buildup increases, so the air blowing operation of the air blowing means should be performed based on the operation mode corresponding to the spring and autumn seasons. Is not appropriate. Therefore, in the present embodiment, one operation mode is selected from the four operation modes according to the predicted minimum temperature of the outside air in the next morning. The lowest daily temperature usually occurs in the morning. Therefore, it is convenient and preferable to use the lowest temperature of the next day as a substitute for the predicted lowest temperature of the outside air the next morning.

  As described above, the first operation mode is an operation mode in which the blowing operation of the blowing unit 6 is stopped in the time zones p and q. The second operation mode is an operation mode in which the blowing means 6 is operated for blowing in the time zones p and q. The third operation mode is an operation mode in which the blower 6 is operated in the time zone p and r, and the blower 6 is stopped from the end time of the time zone p to the start time of the time zone r. . The fourth operation mode is an operation mode in which the air blowing means 6 is operated to blow in the time zone p and the air blowing operation of the air blowing means 6 is stopped in the time zone q. In the third operation mode and the fourth operation mode, the cooling device may be in a cooling operation in a part of the predetermined time zone q living in the living room 1. Note that the end time of the time zone p and the start time of the time zone q are the same time, and when the time zones p and q are combined, it becomes one continuous time zone. Further, the end time of the time zone q and the end time of the time zone r are the same time.

  In the above-described operation mode, a predetermined time before the end time including the end time of the predetermined time zone p and q before the start time of the predetermined time zone q and q that live in the living room 1 from night to the next morning is included. Each time zone r is appropriately set according to the life of the user. The time zones p, q, and r may be set to be the same or different for each operation mode. “Night” in time zone q generally refers to the time from 18:00 to 24:00, and “morning” in the morning following time zone q refers to the time from 6 o'clock to 9 o'clock. The time may be slightly expanded. In the second operation mode, the third operation mode, and the fourth operation mode, the start time of the time zone p in which the blower 6 is operated to blow air is cooler than the air in the living room 1 at the time of the start time of the time zone p. The time is set. Further, the start time of the time zone r in which the air blowing means 6 is blown in the third operation mode is set such that the outside air is cooler than the air in the room 1 at the start time of the time zone r. Is done.

  In the operation mode described above, the comparison temperatures a, b, and c to be compared with the predicted minimum temperature of the outside air the next morning are set in advance. Each comparative temperature varies depending on the thermal insulation performance of the building to which the building ventilation system is applied and the climatic conditions of the area where the building exists. Such a comparative temperature can be set based on, for example, a relationship between the outside air temperature and the room temperature of the room 1 of the building in advance.

  An example of a procedure for setting the comparative temperatures a, b, and c will be described. In this example, the comfortable room temperature range of the living room 1 during a predetermined period of time in the living room 1 from night to next morning when the cooling device is not used (for example, spring and autumn) is 20 ° C. or higher and 27 ° C. or lower. The case will be described. In addition, the comfortable room temperature range of the living room 1 in a period (for example, summer) when the cooling device is used in a part of the predetermined time zone in the living room 1 from the night to the next morning exceeds 27 ° C. A case where the temperature is not higher than ° C. will be described. In this example, the time zone p is a time zone from 20:00 to 22:00, the time zone q is a time zone from 22:00 to 7:00 the next morning, and the time zone r is a time from 2 o'clock to 7 o'clock. It is a obi. When a cooling device is used, the cooling operation time of the cooling device (cooling set temperature 27 ° C. to 28 ° C.) is from 22:00 to 2 o'clock the next day.

  First, in a building to which the building ventilation system is applied, data on the lowest outside air temperature and the room temperature of the living room 1 when the blower fan 7 is blown in accordance with the second operation mode without using a cooling device is acquired. . Specifically, on the day when the minimum temperature of the outside air is different, the room temperature of the living room 1 at 22:00 when the blower fan 7 was blown in accordance with the second operation mode without using the cooling device and at 7:00 the next morning was measured. Get the data. Next, using the acquired data, as shown in FIG. 2A, a graph is obtained by plotting the lowest temperature of the outside air on the horizontal axis and the room temperature of the room 1 at 7 o'clock the next morning on the vertical axis. From the graph, the lowest temperature of the outside air at night corresponding to the room temperature 20 ° C. of the living room 1 the next morning is obtained, and the temperature is defined as a. Further, using the acquired data, as shown in FIG. 2B, a graph is obtained by plotting the lowest outside air temperature on the horizontal axis and the room temperature of the room 1 at 22:00 on the vertical axis. From the graph, the lowest temperature of the outside air corresponding to the room temperature 27 ° C. of the living room 1 at 22:00 is obtained, and the temperature is defined as b.

  On the other hand, in the same building, data of the lowest outside air temperature and the room temperature of the living room 1 when the air blowing fan 7 is blown in accordance with the third operation mode using the cooling device is also acquired. Specifically, on the day when the minimum temperature of the outside air is different, data obtained by measuring the room temperature of the room 1 at 7 o'clock in the next morning when the air blowing fan 7 is blown in accordance with the third operation mode using the cooling device is acquired. . Using the acquired data, as shown in FIG. 2C, a graph is obtained by plotting the lowest temperature of the outside air on the horizontal axis and the room temperature of the room 1 at 7 o'clock the next morning on the vertical axis. From the graph, the minimum temperature of the outside air corresponding to the room temperature 28 ° C. of the room 1 in the next morning is obtained, and the temperature is defined as c.

  Thus, the comparative temperatures a, b and c are set.

  The operation information including the four operation modes in which the comparative temperatures a, b and c and the time zones p, q and r are set is stored in the operation information storage unit 8 as shown in FIG. The control means 9 such as the control panel 50 controls the operation of the blower means 6 such as the blower fan 7 based on the operation mode selected from the operation information stored in the operation information storage means 8. As a result, there is an effect that it is possible to realize a comfortable indoor environment by efficiently reducing the heat accumulation in the living room 1 at night with less energy.

  Specifically, in a period when the nighttime room 1 does not bother much, for example, in winter, the blowing operation of the blower fan 7 is stopped based on the first operation mode. In such an operation mode, since cold outside air is not taken into the living room 1, a comfortable indoor environment can be realized. Moreover, since the blowing operation of the blower fan 7 is not performed, energy saving can be achieved.

  In a time when the nighttime room 1 is somewhat worrisome, for example, in the spring / autumn period, the blowing operation of the blower fan 7 is performed based on the second operation mode. In such an operation mode, outside air that is cooler than the air in the living room 1 is taken into the living room 1. For this reason, as shown in FIG. 3 (a), the room temperature of the living room 1 is lowered during the second operation mode operation compared to the non-operation time when the air blowing operation of the blower fan 7 is not performed, so that the user can spend comfortably. In the second operation mode of FIG. 3A, the time zone p is from 20:00 to 22:00, and the time zone q is from 22:00 to 6:00 in the next morning.

  In the time when the nighttime room 1 is overwhelming, for example, in summer, the air blowing operation of the air blowing fan 7 is performed based on the third operation mode. In such a period, the outside is cool from early morning to dawn. In such an operation mode, outside air that is cooler than the air in the room 1 is taken into the room 1 during the bedtime. For this reason, as shown in FIG. 3 (b), the rise in the room temperature is suppressed during the third operation mode operation as compared to the non-operation time when the air blowing operation of the air blowing fan 7 is not performed, and it is comfortable without being sleepy until morning. Can spend time with. In addition, since room temperature is lowered by introducing outside air into the living room 1 before living time in the living room 1, energy saving can be achieved by reducing the cooling load when using cooling equipment during the living time in the living room 1. Can be planned. In the third operation mode of FIG. 3B, the time zone p is from 20:00 to 22:00, the time zone q is from 22:00 to 6:00 the next morning, and the time zone r is from 2:00 to 6:00. ing. In addition, from 22:00 to 2 o'clock the next day, the cooling operation is performed with the cooling device.

  In the time when the nighttime room 1 is particularly worrisome, for example, in the midsummer, the blowing operation of the blower fan 7 is performed based on the fourth operation mode. In such an operation mode, since the outside air is introduced into the living room 1 and the room temperature is lowered before the time period in which the living room 1 lives, the cooling load is reduced when the cooling device is used in the living time period in the living room 1. Energy saving can be achieved.

  The above building ventilation system does not require the opening of the window of the living room 1, so there is no concern of problems such as crime prevention, soundproofing, and prevention of vision due to the opening of the window, intrusion of rain and air pollutants, etc. Improvement can be expected.

  In the present embodiment, as shown in FIG. 1, the operation information storage unit 8 is provided as a printed material 12. On the printed matter 12, the operation information including the above four operation modes is recorded as character information on a medium such as paper by printing. For example, as shown in FIG. 4, the printed matter 12 is printed with a table showing the operation time of the blower fan in each operation mode. The control panel 50 as the control means 9 has a setting switch 13 for inputting a start time and an end time of the blowing operation of the blower fan 7. The setting switch 13 is configured to transmit the input information as an input signal to the control unit 51 described later. The control panel 50 includes a control unit 51 that receives an input signal from the setting switch 13 and performs a blowing operation of the blower fan 7 in accordance with the input signal.

  The user refers to the operation information recorded on the printed matter 12, and selects one operation mode from the operation information based on the predicted minimum temperature of the next morning such as a weather forecast. Next, the user inputs from the setting switch 13 the start time and the end time of the air blowing operation of the air blowing fan 7 so that the air blowing fan 7 performs the air blowing operation with the control content based on the selected operation mode. For example, the user can input the start time and end time of the air blowing operation of the air blowing fan 7 described in the table of FIG. Further, in consideration of the lifestyle of the person such as the living time in the living room 1, a time different from the time described in the table of FIG.

  In the present embodiment, the same effects as described above are exhibited. Further, the user can select the operation mode with reference to the operation information recorded on the printed matter 12, and sets the start time and end time of the blowing operation of the blower fan 7 in consideration of his / her lifestyle. Can be entered from. For this reason, a comfortable indoor environment can be realized with higher accuracy and less energy.

  FIG. 5 is a view showing a building to which another embodiment of the building ventilation system of the present invention is applied. In the present embodiment, the configuration of the operation information storage unit 8 and the control unit 9 is different from that of the embodiment of FIG. Since the other configuration is common to the embodiment of FIG. 1, in FIG. 5, the same parts as those of the embodiment shown in FIG.

  In the present embodiment, the operation information storage unit 8 is provided as a storage unit 14 that stores operation information in the control unit 9. Moreover, the control means 9 includes an outside air information input unit 15 for inputting a predicted minimum temperature of the outside air in the next morning, and an operation control unit 16. The operation control unit 16 collates the predicted minimum temperature input from the outside air information input unit 15 and the comparison temperature stored in the storage unit 14, and selects one operation mode from the operation information stored in the storage unit 14. The operation of the blower fan 7 is controlled.

  The storage unit 14 includes a storage medium such as a semiconductor memory or a magnetic disk. The storage unit 14 stores program data for operating the blower fan 7 by selecting one operation mode from the first operation mode to the fourth operation mode by the execution in the operation control unit 16. The outside air information input unit 15 inputs the predicted minimum temperature of the outside air in the next morning, and transmits the input information to the operation control unit 16 as an input signal. The outside air information input unit 15 may be configured by a manual input switch, and the predicted minimum temperature of outside air in the next morning acquired from the weather forecast or the like by the user may be input from the manual input switch. Alternatively, the outside air information input unit 15 may be configured by an automatic input switch, and the predicted minimum temperature of the next morning outside air automatically acquired through the Internet may be automatically input from the automatic input switch. The operation control unit 16 controls the operation of the blower fan 7 by the CPU executing the program data stored in the storage unit 14.

  In this embodiment, since the operation of the blower fan 7 is automatically controlled by the input of the predicted morning temperature of the next morning from the outside air information input unit 15, the start time and the end time of the blower fan 7 are input. Is no longer necessary and more convenient. When the outside air information input unit 15 is configured by an automatic input switch, the predicted minimum temperature of the outside air that has been automatically acquired the next morning is automatically input, which further enhances convenience. In addition, since it is possible to automatically perform control according to the latest weather conditions, a comfortable indoor environment can be realized with higher accuracy.

  FIG. 6 is a view showing a building to which still another embodiment of the building ventilation system of the present invention is applied. This embodiment is different from the embodiment of FIG. 1 in that an opening adjustment grill 17 and an exhaust means 18 are provided. Since the other configuration is common to the embodiment of FIG. 1, in FIG. 7, the same parts as those of the embodiment shown in FIG.

  In the present embodiment, the air supply opening 2 is provided with an opening adjustment grill 17 that can adjust the air supply amount by changing the opening area of the air supply opening 2. The opening adjustment grill 17 can adjust the opening area of the air supply port 2 to any value within the range of 0 to 100%.

  The air supply pipe 11 is provided with a damper 19 as an exhaust means 18 on the downstream side of the blower fan 7. The damper 19 opens when the air supply pressure of the air supply pipe 11 exceeds a predetermined pressure, and discharges the outside air inside the pipe to the outside of the pipe. In the present embodiment, since the air supply pipe 11 is provided in the cabin back 31, the outside air in the pipe is exhausted to the cabin back 31 through the opening of the damper 19.

  Even if the air volume of the blower fan 7 is adjusted, it is difficult to individually adjust the ventilation volume of each room 1. In the present embodiment, the ventilation amount of each living room 1 can be individually adjusted to an appropriate amount by adjusting the opening degree of the opening adjustment grill 17 for each living room 1. Further, even when the blowing fan 7 is blown in the state where the opening of the opening adjustment grill 17 is set to 0% in each living room 1 and the air supply port 2 is closed, the supply air pressure in the air supply pipe 11 is reduced by the damper 19. It can be adjusted within a predetermined pressure. If the air supply pressure in the air supply pipe 11 increases above a predetermined air supply pressure, it may adversely affect other rooms and the air blowing path. In the present embodiment, the supply air pressure in the air supply pipe 11 is adjusted to a predetermined pressure by the damper 19, so that it is possible to suppress the influence of the increase in the air supply pressure in the air supply pipe 11 with respect to the other chambers and the air supply path.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, as shown in FIG. 7, in the embodiment of FIG. 1, the hut ventilation 31 is further provided with the ridge ventilation 20, and the non-residential air extending from the non-occupancy such as the hallway 30 to the ridge ventilation 20 of the hut 31 is also provided. A ventilation structure such as an exhaust pipe 21 that ventilates the building ventilation 20 can also be provided. In FIG. 7, the same parts as those in the embodiment shown in FIG. Exhaust air from each living room 1 is exhausted to the outside through a route of living room 1 → fitting space → non-living room such as corridor 30 → exhaust pipe 21 → building ventilation 20. In this embodiment, it is possible to exhaust the air in the living room 1 using the temperature difference ventilation in the building ventilation 20, and the air in each living room 1 is exhausted from the exhaust port 3 as compared with the case where the air in the living room 1 is exhausted. It is possible to reduce heat accumulation more efficiently. Moreover, even when the blowing operation of the blower fan 7 is stopped, a natural heat removal effect due to temperature difference ventilation can be obtained.

DESCRIPTION OF SYMBOLS 1 Living room 2 Air supply port 3 Exhaust port 4 Outside air introduction port 6 Blowing means 8 Operation information storage means 9 Control means 11 Supply pipe 12 Printed matter 13 Setting switch 14 Storage part 15 Outside air information input part 16 Operation control part 17 Opening adjustment grill 18 Exhaust means 20 ventilation

Claims (5)

An air supply and exhaust port provided in a room in the building;
An outside air introduction port provided on the outer wall of the building and capable of introducing outside air into the building;
Blower means for sending outside air introduced into the building from the outside air inlet to the air inlet;
Q is a predetermined time zone for living in the living room from night to next morning, p is a predetermined time zone before the start time of the q time zone, and r is a predetermined time zone before the end time including the end time of the q time zone. (Where q> r), and the comparison temperatures to be compared with the predicted minimum temperature of the outside air the next morning are a, b, and c (where a <b <c),
When the predicted minimum temperature of the outside air in the next morning is less than a, a first operation mode for stopping the blowing operation of the blowing means in the time zone of p and q,
When the predicted minimum temperature of the outside air in the next morning is a or more and less than b, a second operation mode in which the blowing means is blown in the time zone of p and q,
When the predicted minimum temperature of the outside air in the next morning is not less than b and less than c, the blowing means is blown in the time zone of p and r, and the blowing means is from the end time of the time zone of p to the start time of the time zone of r. If the predicted minimum temperature of the outside air in the next morning is equal to or higher than c, the blowing means is blown in the time zone p, and the blowing operation of the blowing means is turned in the time zone q. Operation information storage means for storing operation information consisting of a fourth operation mode to be stopped;
A building ventilation system comprising: control means for controlling the operation of the blowing means based on an operation mode selected from the operation information stored in the operation information storage means. The operation information storage means is a printed matter,
The control means has a setting switch for inputting a start time and an end time of the air blowing operation of the air blowing means, and performs the air blowing operation of the air blowing means according to an input from the setting switch based on a selected operation mode. The building ventilation system according to claim 1. The operation information storage means is provided as a storage unit for storing the operation information in the control means,
The control means further collates the outside air information input unit for inputting a predicted minimum temperature of the next morning outside air, the predicted minimum temperature input from the outside air information input unit and the comparison temperature stored in the storage unit. The building ventilation system according to claim 1, further comprising: an operation control unit that selects one operation mode from the operation information stored in the storage unit and controls the operation of the blower unit. . The building ventilation system according to any one of claims 1 to 3, wherein the air blowing means has an air volume that can obtain a ventilation frequency of the room at least twice / hour. An opening adjustment grill provided in the air supply port and capable of adjusting an air supply amount by changing an opening area of the air supply port, and connected to the air supply port, and external air from the air blowing means is supplied to the air supply port. And an air supply pipe for supplying air to
5. The discharge pipe according to claim 1, wherein the supply pipe has discharge means that opens when the supply air pressure of the supply pipe exceeds a predetermined pressure and discharges the outside air inside the pipe to the outside of the pipe. Building ventilation system as described in the section.

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