JP6395413B2 - Ventilation / air conditioning system - Google Patents

Description

  The present invention relates to a ventilation / air conditioning system.

  As an air conditioner installed in a building, for example, those disclosed in Patent Literature 1 and Patent Literature 2 are known. Patent Document 1 discloses an air conditioner that detects the movement of a user and activates the air conditioner when it is determined that the user enters the room. Patent Document 2 discloses a device control device that automatically starts the operation of a cooling / heating device when it is determined that the user is on the way home based on the position information of the mobile device.

  According to the techniques disclosed in Patent Literature 1 and Patent Literature 2 described above, the air conditioner is operated before the user enters the room. Thereby, the space at the time of entrance can be made into a comparatively comfortable temperature state rather than the case where an air conditioner is operated after a user enters.

Japanese Patent No. 3237338 JP 2014-3391 A

  However, in the conventional air conditioner described above, cooling is performed from a state where hot air is trapped in the building. For this reason, there is a problem that it takes a long time for the temperature in the building to reach a comfortable temperature state, and the amount of electric power becomes enormous. Such a problem was particularly remarkable in the summer.

  The present invention has been made in view of the above, and obtains a ventilation / air conditioning system that can be comfortably air-conditioned in a short time and with low power consumption in a building before a user enters the room. For the purpose.

In order to solve the above-described problems and achieve the object, a ventilation / air conditioning system according to the present invention includes a ventilation unit that ventilates an indoor space in a building, and an air conditioning unit that performs air-conditioning of the indoor space in the building. An entrance detection unit for detecting a user's entrance in advance, a control unit for controlling the operation of the ventilation unit and the air conditioning unit, and presence detection means for detecting presence or absence of a person in the indoor space And the control unit detects the user's room in the room detection unit in advance, and the ventilation unit is configured to detect the presence of a person in the indoor space by the room detection unit. The ventilation operation instruction information for instructing the operation of the vehicle is output to the ventilation unit, and the indoor space is cooled to the same temperature as the outside air by the ventilation of the indoor space by the ventilation unit according to the ventilation operation instruction information. Air conditioning unit The air conditioning operation instruction information for instructing the operation and outputs it to the air-conditioning unit, also has before entering of the user in the fill chamber detection portion is detected in advance, and the occupancy detecting means by the occupancy of a person in the indoor space When detected, the ventilation operation instruction information and the air conditioning operation instruction information are not output, and the ventilation unit has a larger air volume according to the ventilation operation instruction information than when the ventilation unit functions as a 24-hour ventilation system. The indoor space is ventilated, and the air conditioning unit performs air conditioning of the indoor space according to the air conditioning operation instruction information.

  Advantageous Effects of Invention According to the present invention, there is an effect that the building before the user enters the room can be comfortably air-conditioned for a short time with less power consumption.

FIG. 1 is a block diagram showing a configuration of a ventilation / air conditioning system according to an embodiment of the present invention. FIG. 2 is a flowchart showing an operation flow of the ventilation / air conditioning system according to the embodiment of the present invention. FIG. 3 is a flowchart showing another operation flow of the ventilation / air conditioning system according to the embodiment of the present invention. FIG. 4 is a diagram showing a state before operation of the ventilation / air conditioning system according to the present embodiment in a general home. FIG. 5 is a diagram showing a state after the operation of the ventilation / air conditioning system according to the present embodiment in a general home. FIG. 6 is a diagram showing air supply / exhaust air paths during a 24-hour ventilation operation in which normal heat exchange between supply and exhaust is performed in the heat exchange ventilator. FIG. 7 is a diagram illustrating air supply / exhaust air paths during bypass operation in which heat exchange between supply and exhaust is not performed in the heat exchange ventilator. FIG. 8 is a diagram showing an air path during operation of only air supply in the heat exchange ventilator. FIG. 9 is a diagram showing a state during operation of only the air supply in the heat exchange ventilator after the operation of the ventilation / air conditioning system according to the present embodiment in a general home. FIG. 10 is a diagram showing a state during a ventilation operation with a large air volume, in which the number of exhaust fans for exhaust is limited, after the operation of the ventilation / air conditioning system according to the present embodiment in a general home. FIG. 11 is a diagram showing a state in which only a supply ventilation fan is ventilated with a large air volume after the operation of the ventilation / air conditioning system according to the present embodiment in a general home. FIG. 12 is a block diagram schematically illustrating an example of a configuration of a computer device that can realize a function as a control unit of the ventilation / air conditioning system according to the embodiment of the present invention.

  Hereinafter, embodiments of a ventilation / air conditioning system according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably. In the drawings shown below, the scale of each member may be different from the actual scale for easy understanding. The same applies between the drawings.

Embodiment FIG. 1 is a block diagram showing a configuration of a ventilation / air conditioning system according to an embodiment of the present invention. The ventilation / air conditioning system according to the embodiment includes a ventilation unit 11, an air conditioning unit 12, a natural air supply unit 13, a human sensor 14, a building temperature sensor 15, an outside air temperature sensor 16, and an entrance detection unit. 17 and a control unit 18. The control unit 18 and other units are connected by a communication line capable of communicating various information. The communication line may be a wired communication line or a wireless communication line.

  The ventilation unit 11 is a ventilation unit having a discharge unit that discharges indoor air inside a building to the outside of the building and an air supply unit that supplies outside air outside the building into the building. For example, a ventilating fan is used for the ventilating section 11, and it is possible to use various forms such as a form of local use only for a cooking place, such as a kitchen range hood, or a form of constant use for the entire room / building. it can. The ventilation part 11 is arrange | positioned in several places, such as each room in a building, a kitchen, a washroom, a bathroom, and a toilet. For example, an exhaust fan and an air supply fan can be used as the ventilator 11 depending on the arrangement location.

  The air conditioning unit 12 is a so-called air conditioner configured to include a blower and a heat exchanger, and performs air conditioning of the indoor space in the building. The air conditioning unit 12 includes, for example, an indoor unit and an outdoor unit. The indoor unit is installed, for example, on a wall surface in the indoor space in the building, and exchanges heat with the air in the indoor space. The air blower of the air conditioning unit 12 supplies the air that has undergone heat exchange in the indoor unit to the indoor space. An outdoor unit is arrange | positioned outdoors, such as a veranda of a building, for example, and performs heat exchange between the air sent from the indoor unit, and external air.

  The natural air supply unit 13 is provided to supply outside air into the room in the building. The natural air supply unit 13 is, for example, a natural air supply port provided with a shutter opening / closing mechanism. The natural air supply unit 13 supplies outside air into the building by opening the shutter, and supplies the outside air to the building by closing the shutter. Stop. An automatic shutter such as an electromagnetically controlled shutter is used as the shutter. In addition, although the natural air supply part 13 is distinguished and described here from the ventilation part 11, the natural air supply part 13 is also considered as one of the air supply parts of the ventilation part 11. FIG.

  The human sensor 14 is occupancy detection means for detecting the presence or absence of a person in the indoor space of the building. The human sensor 14 is, for example, a human sensor of a ventilation fan with a human sensor arranged in a toilet, a human sensor provided in the air-conditioning unit 12 having a function of detecting a person's whereabouts, and the like. It may be a human sensor or the like of a security device. Further, instead of the human sensor 14, a means for detecting the use state of a power source such as a television or lighting may be substituted as a means for detecting the presence or absence of a person in the building. That is, when a television or lighting is used, it may be detected that a person is in the room.

  The building temperature sensor 15 is a building temperature measuring means for measuring the temperature of the indoor space in the building. The building temperature sensor 15 measures the room temperature, which is the temperature of the indoor space in the building, and outputs the measurement result to the control unit 18 via the communication line. The in-building temperature sensor 15 is preferably arranged in a space where ventilation and cooling are performed at least by the ventilation / air conditioning system in the building. Thereby, the temperature of the space in which ventilation and cooling are performed by the ventilation / air conditioning system can be measured more accurately. Note that the building temperature sensor 15 is not limited to one, and may be arranged at several locations in the building. Moreover, the temperature sensor 15 in a building may be a temperature sensor of a room temperature provided in the air conditioner.

  The outside air temperature sensor 16 is an outside air temperature measuring unit that measures the outside air temperature outside the building. The outside air temperature sensor 16 measures the outside air temperature, which is an outdoor temperature, and outputs the measurement result to the control unit 18 via the communication line. The outside air temperature sensor 16 is not limited to one and may be arranged at several places outside the building. Further, instead of the outside air temperature sensor 16, an outside air temperature data collecting unit that can collect outside air temperature data that can be used by the public through a telecommunication circuit may be provided. In this case, the outside air temperature data collected by the outside air temperature data collecting means is output to the control unit 18. Further, the outside air temperature sensor 16 may be a temperature sensor for outside air temperature provided in the air conditioner.

  The entrance detector 17 detects in advance that a person enters the building before the person enters the room. The room entry detection unit 17 receives information obtained before a person enters the room and detects a person entering the room in advance. Such information is, for example, transmitted at the time of setting the destination of a car navigation system installed in a car, remote operation information of a person who plans to enter the room from outside, position detection information by a portable terminal with a GPS (global positioning system) function, and so on. Information such as signal reception information. In addition, the room entry detection unit 17 may set a predetermined scheduled time as long as the return time is almost fixed when a person returns home from a work place to a general house. Among such information, information that does not require active processing of the person who plans to enter the room detection unit 17 is particularly preferable. For example, position detection information by the above-described mobile terminal with a GPS function, signal information transmitted when setting the destination of a car navigation mounted on a car, and a predetermined scheduled time are preferable. By using such information, the person who enters the room can enjoy the merits of this ventilation / air-conditioning system without performing any processing on his / her own.

  The control unit 18 controls processing of the entire ventilation / air conditioning system according to the present embodiment, including control of the ventilation unit 11 and the air conditioning unit 12. The control unit 18 is connected to each unit of the ventilation / air conditioning system according to the embodiment so that information communication is possible.

  Next, the operation of the ventilation / air conditioning system according to the embodiment will be described. FIG. 2 is a flowchart showing an operation flow of the ventilation / air conditioning system according to the present embodiment. First, when entering a person such as a resident is detected in advance (step S110), the entrance detecting unit 17 outputs to the control unit 18 prior detection information indicating that a person has been entered in advance. Upon receiving the prior detection information, the control unit 18 outputs occupancy detection instruction information for instructing the presence / absence detection of the occupant to the human sensor 14. When the presence sensor instruction information is received, the human sensor 14 determines the presence or absence of the occupant in accordance with the occupancy detection instruction information, and outputs the occupancy detection result information to the control unit 18 as the determination result (step S120). ).

  When the control unit 18 receives the presence detection result information, if there is a resident in the presence detection result information (step S120, Yes), no further processing is performed, and the processing of the ventilation / air conditioning system is performed. Exit. If there are occupants in the room, the room is kept in an air-conditioned state that is comfortable for the occupants and the operation of the ventilation / air-conditioning system is not necessary.

  When there is no occupant in the occupancy detection result information (step S120, No), the control unit 18 controls the building temperature sensor 15 to measure the room temperature in the building, and the measurement result is used as the building temperature T. To the control unit 18. When the control unit 18 receives the in-building temperature T, the control unit 18 compares the in-building temperature T with the set temperature Ts and the set temperature Tw. The set temperature Ts and the set temperature Tw are determined when the air conditioning unit 12 performs a cooling operation, when the air conditioning unit 12 performs a heating operation, or when the present ventilation / air conditioning system does not operate. The determination criterion is determined and stored in advance in, for example, the control unit 18. The set temperature Ts is a lower limit temperature for operating the cooling operation in the air conditioning unit 12 in the present ventilation / air conditioning system. The set temperature Tw is an upper limit temperature for operating the heating operation in the air conditioning unit 12 in the ventilation / air conditioning system.

  First, the control unit 18 compares the building temperature T with the set temperature Tw to determine whether the building temperature T is equal to or lower than the set temperature Tw (step S130). When the building temperature T is equal to or lower than the set temperature Tw (step S130, Yes), since the room temperature in the building is low, the control unit 18 provides heating operation instruction information for instructing the heating operation by the air conditioning unit 12 to the air conditioning unit 12. Output to. When the air conditioning unit 12 receives the heating operation instruction information from the control unit 18, the heating operation function is turned on in accordance with the heating operation instruction information, and the heating operation is started (step S190). The ventilation / air conditioning system then ends a series of control processes.

  On the other hand, when the building temperature T is not lower than the set temperature Tw (step S130, No), the control unit 18 compares the building temperature T with the set temperature Ts, and the building temperature T is equal to or higher than the set temperature Ts. It is determined whether or not there is (step S140). When the temperature T in the building is not equal to or higher than the set temperature Ts (step S140, NO), the indoor temperature in the building is in a comfortable temperature state, so the ventilation / air conditioning system does not operate any more and ends the processing. .

  On the other hand, when the temperature T in the building is equal to or higher than the set temperature Ts (step S140, Yes), since the indoor temperature in the building is high, the air conditioning unit 12 performs the cooling operation. Here, before the cooling operation in the air conditioning unit 12 is started, the control unit 18 determines whether or not to perform ventilation by the ventilation unit 11. In order to make the determination, the outside temperature sensor 16 measures the outside temperature outside the building under the control of the control unit 18 and outputs the measurement result to the control unit 18 as the outside temperature To. Upon receipt of the outside air temperature To, the control unit 18 compares the outside air temperature To with the in-building temperature T to determine whether the in-building temperature T is greater than the outside air temperature To (step S150). .

  When the in-building temperature T is higher than the outside air temperature To (step S150, Yes), the control unit 18 outputs ventilation operation instruction information for instructing the ventilation operation of room air by the ventilation unit 11 to the ventilation fan. When the ventilation unit 11 receives the ventilation operation instruction information from the control unit 18, the ventilation unit 11 starts the ventilation operation according to the ventilation operation instruction information and ventilates the room. That is, in the ventilation unit 11, the exhaust unit exhausts room air, and the air supply unit supplies outside air into the room. At this time, the air volume of the exhaust in the ventilation unit 11 is a large air volume. Here, the large air volume is an air volume larger than the air volume when a 24-hour ventilation operation is performed in a 24-hour ventilation system described later.

  Further, the control unit 18 outputs shutter opening instruction information for instructing to open the shutter to the natural air supply unit 13. When the natural air supply unit 13 receives the shutter opening instruction information from the control unit 18, the natural air supply unit 13 opens the shutter according to the shutter opening instruction information. The natural air supply unit 13 supplies outside air into the building by opening the shutter. Thereby, indoor air is exhausted outside the building by the ventilation unit 11, and outside air outside the building is supplied into the room inside the building by the air supply unit of the ventilation unit 11 and the natural air supply unit 13. Indoor air is ventilated (step S160). In addition, about the air supply of the outdoor air to a room, either the form performed by both the air supply part of the ventilation part 11 and the natural air supply part 13, or the air supply part of the ventilation part 11 and the natural air supply part 13 On the other hand, it is possible to arbitrarily select and set the form to be performed.

  After the start of ventilation, the building temperature sensor 15 again measures the indoor temperature in the building under the control of the control unit 18 and outputs the measurement result to the control unit 18 as the building temperature T. Upon receiving the building temperature T, the control unit 18 compares the building temperature T with the outside air temperature To and re-determines whether the building temperature T is higher than the outside air temperature To (step S170). ). When the in-building temperature T is higher than the outside air temperature To (step S170, Yes), the measurement of the in-building temperature T by the in-building temperature sensor 15 and the determination by the control unit 18 are repeated.

  On the other hand, when the building internal temperature T is not greater than the outside air temperature To (step S170, No), that is, when the building internal temperature T becomes the same as the outside air temperature To, the control unit 18 causes the ventilation unit 11 to The ventilation operation stop instruction information for instructing the stop of the air ventilation operation is output to the ventilation unit 11. When receiving the ventilation operation stop instruction information from the control unit 18, the ventilation unit 11 stops the ventilation operation in accordance with the ventilation operation stop instruction information. However, in recent years, ventilation is often performed in a 24-hour ventilation system, which will be described later, and in this case, the ventilation unit 11 performs exhaust with a small air volume. Here, the small air volume is an air volume when the ventilation operation is normally performed for 24 hours.

  Further, the control unit 18 outputs shutter close instruction information for instructing to close the shutter to the natural air supply unit 13. When the natural air supply unit 13 receives the shutter close instruction information from the control unit 18, the natural air supply unit 13 closes the shutter according to the shutter close instruction information.

  Then, the control unit 18 outputs cooling operation instruction information for instructing the cooling operation by the air conditioning unit 12 to the air conditioning unit 12. When the air conditioning unit 12 receives the cooling operation instruction information from the control unit 18, the cooling operation function is turned on according to the cooling operation instruction information, and the cooling operation is started (step S180). The cooling operation instruction information includes, for example, a target temperature. The ventilation / air conditioning system then ends a series of control processes.

  On the other hand, returning to step S150, when the building temperature T is not greater than the outside air temperature To (step S150, No), the process proceeds to step S180, where the ventilation operation of the ventilation unit 11 is stopped and the natural air supply unit 13 is stopped. The shutter is closed, and the cooling operation of the air conditioning unit 12 is started.

  The order of comparing the building temperature T, the set temperature Ts, and the set temperature Tw described above is not limited to the above order.

  In the ventilation / air conditioning system according to the present embodiment by performing the processing described above, if it is detected in advance that a user enters the building without any occupants in the building, Ventilate the inside and exhaust the hot air trapped inside the building, replace the air inside the building with outside air outside the building, and after the temperature of the space inside the building falls to the same temperature as the outside temperature, the air conditioning unit 12 performs cooling operation.

  As a result, in the ventilation / air conditioning system according to the present embodiment, the temperature in the building is more comfortable than when the cooling of the air conditioning unit 12 is performed from a state where hot air is trapped in the building to lower the indoor temperature. The time to reach the temperature state is greatly shortened, and the amount of power required for the cooling operation is greatly reduced.

  In the above, the indoor air ventilation operation by the ventilation unit 11 was stopped when the temperature T in the building became equal to the outside air temperature To. Although the effect mentioned above falls a little, it is not necessarily limited to when the temperature T in the building becomes the same as the outside air temperature To. For example, the ventilation operation by the ventilation unit 11 causes the temperature T in the building to be lower than that at the start of the ventilation operation, and the ventilation operation of the indoor air by the ventilation unit 11 is stopped in a state higher by a predetermined temperature than the outside air temperature. The cooling operation may be started.

  Next, another operation mode in the ventilation / air conditioning system according to the embodiment will be described. FIG. 3 is a flowchart illustrating another operation flow of the ventilation / air conditioning system according to the embodiment. First, when the entrance detection unit 17 detects the entrance of a person such as a resident in advance (step S310), the entrance detection unit 17 outputs to the control unit 18 advance detection information indicating that the entrance of the person has been detected in advance. Upon receiving the prior detection information, the control unit 18 outputs occupancy detection instruction information for instructing the presence / absence detection of the occupant to the human sensor 14. When the presence sensor instruction information is received, the human sensor 14 determines the presence / absence of the occupant in accordance with the occupancy detection instruction information, and outputs the occupancy detection result information to the control unit 18 as the determination result (step S320). ).

  Upon receiving the occupancy detection result information, when the occupant is present in the occupancy detection result information (step S320, Yes), the control unit 18 does not perform any further processing, and performs processing of the ventilation / air conditioning system. Exit.

  When there is no occupant in the occupancy detection result information (step S320, No), the control unit 18 determines whether the present time corresponds to the winter, summer, or intermediate period. Here, the control unit 18 has a calendar function, and can set a period corresponding to the winter, summer, and intermediate period in one year as the calendar function in advance. The period corresponding to the winter, summer, and interim period is, for example, December to March is winter, April to June is intermediate, July to September is summer, and October to November is intermediate. Is set as follows.

  First, the control unit 18 determines whether or not the current time corresponds to the winter season (step S330). If the current time corresponds to the winter season (step S330, Yes), the room temperature in the building is low, so the control unit 18 outputs heating operation instruction information for instructing the heating operation by the air conditioning unit 12 to the air conditioning unit 12. When the air conditioning unit 12 receives the heating operation instruction information from the control unit 18, the heating operation function is turned on in accordance with the heating operation instruction information, and the heating operation is started (step S390). The ventilation / air conditioning system then ends a series of control processes.

  On the other hand, if the current time does not correspond to the winter season (step S330, No), the control unit 18 determines whether or not the current time corresponds to the summer season (step S340). If the current time does not correspond to the summer (step S340, No), the current time corresponds to the intermediate period, the room temperature in the building is in a comfortable temperature state, this ventilation and air conditioning system will not operate any more, End the process.

  On the other hand, when the current time corresponds to the summer season (step S340, Yes), since the indoor temperature in the building is high, the cooling operation by the air conditioning unit 12 is performed. Here, before the cooling operation in the air conditioning unit 12 is started, the control unit 18 determines whether or not to perform ventilation by the ventilation unit 11.

  In order to make the determination, the control unit 18 controls the building temperature sensor 15 to measure the indoor temperature in the building, and outputs the measurement result to the control unit 18 as the building temperature T. Further, under the control of the control unit 18, the outside air temperature sensor 16 measures the outside air temperature outside the building, and outputs the measurement result to the control unit 18 as the outside air temperature To. When the control unit 18 receives the in-building temperature T and the outside air temperature To, the control unit 18 compares the in-building temperature T with the outside air temperature To to determine whether the in-building temperature T is higher than the outside air temperature To. (Step S350).

  When the in-building temperature T is higher than the outside air temperature To (step S350, Yes), the control unit 18 outputs the ventilation operation instruction information for instructing the ventilation operation of the room air by the ventilation unit 11 to the ventilation unit 11. . When the ventilation unit 11 receives the ventilation operation instruction information from the control unit 18, the ventilation unit 11 starts the ventilation operation according to the ventilation operation instruction information and ventilates the room. That is, in the ventilation unit 11, the exhaust unit exhausts room air, and the air supply unit supplies outside air into the room. At this time, the air volume of the exhaust in the ventilation unit 11 is a large air volume.

  Further, the control unit 18 outputs shutter opening instruction information for instructing to open the shutter to the natural air supply unit 13. When the natural air supply unit 13 receives the shutter opening instruction information from the control unit 18, the natural air supply unit 13 opens the shutter according to the shutter opening instruction information. The natural air supply unit 13 supplies outside air into the building by opening the shutter. Thereby, indoor air is exhausted outside the building by the ventilation unit 11, and outside air outside the building is supplied into the room inside the building by the air supply unit of the ventilation unit 11 and the natural air supply unit 13. Indoor air is ventilated (step S360). In addition, about the air supply of the outdoor air to a room, either the form performed by both the air supply part of the ventilation part 11 and the natural air supply part 13, or the air supply part of the ventilation part 11 and the natural air supply part 13 On the other hand, it is possible to arbitrarily select and set the form to be performed.

  After the start of ventilation, the control unit 18 determines whether or not the operation time from the start of operation of the ventilation unit 11 has exceeded a preset set operation time (step S370). The standard at the start of operation of the ventilation unit 11 is, for example, when the control unit 18 outputs ventilation operation instruction information to the ventilation unit 11. Here, in the control unit 18, an operation time during which the ventilation unit 11 continues the ventilation operation is set as a set operation time. And the control part 18 has a timer function, and can measure the time after the driving | operation start of the ventilation part 11. FIG.

  When the operation time from the start of operation of the ventilation unit 11 has not elapsed beyond the set operation time (step S370, No), the control unit 18 repeats step S370, and the operation time from the start of operation of the ventilation unit 11 It is determined whether or not the set operation time has elapsed.

  On the other hand, when the operation time from the start of the operation of the ventilation unit 11 has exceeded the set operation time (step S370, Yes), the control unit 18 instructs the ventilation unit 11 to stop the indoor air ventilation operation. The stop instruction information is output to the ventilation unit 11. When receiving the ventilation operation stop instruction information from the control unit 18, the ventilation unit 11 stops the ventilation operation in accordance with the ventilation operation stop instruction information. However, in recent years, ventilation for 24 hours, which will be described later, is often performed. In this case, the ventilation unit 11 performs exhaust with a small air volume.

  Further, the control unit 18 outputs shutter close instruction information for instructing to close the shutter to the natural air supply unit 13. When the natural air supply unit 13 receives the shutter close instruction information from the control unit 18, the natural air supply unit 13 closes the shutter according to the shutter close instruction information.

  Then, the control unit 18 outputs cooling operation instruction information for instructing the cooling operation by the air conditioning unit 12 to the air conditioning unit 12. When the air conditioning unit 12 receives the cooling operation instruction information from the control unit 18, the cooling operation function is turned on in accordance with the cooling operation instruction information, and the cooling operation is started (step S380). The ventilation / air conditioning system then ends a series of control processes.

  On the other hand, returning to step S350, when the building temperature T is not greater than the outside air temperature To (step S350, No), the process proceeds to step S380, where the ventilation operation of the ventilation unit 11 is stopped and the natural air supply unit 13 is moved. The cooling operation of the air conditioning unit 12 is started in a state in which the shutter is closed.

  In the ventilation / air conditioning system according to the embodiment by performing the above-described processing, if it is detected in advance that a user enters the building without any occupants in the building, The air in the building is exhausted outside the building, the air inside the building is exchanged with the outside air outside the building, and after the temperature of the space inside the building falls to the same temperature as the outside temperature, the air conditioning unit 12 To perform cooling operation.

  As a result, in the ventilation / air conditioning system according to the present embodiment, the temperature in the building is more comfortable than when the cooling of the air conditioning unit 12 is performed from a state where hot air is trapped in the building to lower the indoor temperature. The time to reach the temperature state is greatly shortened, and the amount of power required for the cooling operation is greatly reduced.

  Next, an example of the operation of the ventilation / air conditioning system when the ventilation / air conditioning system according to the present embodiment is applied to a general home will be described. FIG. 4 is a diagram showing a state before operation of the ventilation / air conditioning system according to the present embodiment in a general home. In FIG. 4, the arrows indicate the flow of air, and the size of the arrows indicates the air volume. In FIG. 4, as a ventilation unit 11, a range hood 32, which is an exhaust fan for an exhaust, is installed in a living dining kitchen (LDK) 31, and an exhaust fan 34 for supplying air is installed in a Japanese room 33 on the first floor of a house. . In addition, an exhaust fan 38 for exhausting air from the toilet 35, the toilet 36, and the bathroom 37 is installed. In addition, a natural air supply unit 39 and an air conditioner 40 are installed in the LDK 31.

  Further, the attic 51 of the house has a function of recovering heat between the air in the indoor space in the building and the outside air as the ventilation unit 11 so as to supply the outside air to the indoor space and exhaust the air in the indoor space. Are installed at the same time, or only one of them is installed. The heat exchange ventilator 52 is connected to the toilet 41 and the western room 42 on the second floor by a pipe 53, and is connected to an air supply port 55 and an exhaust port 56 provided in the eaves 54 by a pipe 53. The heat exchange ventilator 52 exhausts air from the toilet 41 and the attic 51 on the second floor and supplies air to the western room 42. The heat exchange ventilator 52 returns, for example, air that is supplied with heat and moisture from the exhausted air during ventilation. Thereby, since the heat loss by ventilation decreases, the energy saving effect is acquired.

  An air conditioner 43 is installed in the western room 42 on the second floor as the air conditioning unit 12. The human sensor 14, the building temperature sensor 15, the outside air temperature sensor 16, the entrance detection unit 17, and the control unit 18 are not shown.

  Each ventilation fan normally performs ventilation for 24 hours with a small air volume even when there are no occupants (24 hour ventilation system). Here, the 24-hour ventilation system is a system in which indoor air is systematically replaced using a machine such as a fan, and fresh air is always maintained. As described above, when the ventilation fan is in the small air volume operation, the shutter of the natural air supply unit 39 is closed. This 24-hour ventilation aims to discharge VOC (Volatile Organic Compounds) generated from the house, and the Building Standards Act stipulates that the air volume is 0.5 times / h of the volume of the house. . Since the air volume of this 24-hour ventilation is a small air volume, it is not sufficient for discharging hot air that is trapped in the house due to solar radiation in summer. For this reason, if there is no occupant and the air conditioning unit is not operating, the temperature in the room rises.

  When the entrance detection unit 17 (not shown) detects that a person enters the room in advance before entering the person, the control unit 18 (not shown) detects whether there is a person in the room according to the procedure of the flowchart described above. Make a decision. The reason for detecting / determining whether there is a resident is that if the occupant is present, the room is kept in a comfortable air-conditioning state for the occupant and the ventilation / air-conditioning system does not need to be operated. . Further, it is preferable that the ventilation / air-conditioning system is not operated when there are people in the room. As a result, for example, even if the occupant is cleaning the ventilation fan, the ventilation fan is not operated by the ventilation / air-conditioning system, so that the danger that the occupant is injured by the ventilation / air-conditioning system can be avoided. .

  Furthermore, a sensor for detecting when the ventilation fan is cleaned, for example, a sensor for detecting attachment / detachment of the filter may be provided in the ventilation unit 11 and used for detecting the presence of the room. As a result, if the filter is removed, it is determined that there are people in the room and the ventilation / air conditioning system will not operate.Therefore, it is ensured that the people in the room will be injured by the ventilation / air conditioning system. It can be avoided.

  Further, when the presence / absence of the occupant is detected, if there is no occupant, the temperature T in the building is measured according to the procedure of the flowchart of FIG. 2 described above, and the building temperature T and the set temperature Tw are measured. , Ts is compared, and the state shifts to a state in each case of T ≦ Tw, Tw <T <Ts, and T ≧ Ts.

  Hereinafter, the case of T ≧ Ts will be described in detail. As described above, in the ventilation / air conditioning system according to the present embodiment, the building temperature sensor 15 measures the building temperature T, and the outside temperature sensor 16 measures the outside temperature To. Here, in the case of To> T, when the indoor air is ventilated, outside air having a temperature higher than that of the indoor air is taken into the room. Therefore, in this case, the air conditioning unit 12 is immediately cooled without operating the ventilation unit 11.

  On the other hand, in the case of To <T, the ventilation unit 11 is operated in order to take outdoor air having a temperature lower than that of the indoor air into the room. It is necessary to replace the air with outside air. For this reason, it is preferable that the operation of the ventilation unit 11 in this case has a large air volume. Therefore, it is preferable to open the shutter of the natural air supply unit 13 and actively introduce outside air due to a pressure difference between indoor air and outside air.

  FIG. 5 is a diagram showing a state after the operation of the ventilation / air conditioning system according to the present embodiment in a general home. In FIG. 5, the arrow indicates the flow of air, and the size of the arrow indicates the air volume. In FIG. 5, the air volume of ventilation by the ventilation part 11 is larger than the case where the 24-hour ventilation shown in FIG. 4 is being performed.

  The control unit 18 of the ventilation / air conditioning system according to the present embodiment compares the in-building temperature T with the outside air temperature To while operating the ventilation unit 11. Then, when the building temperature T and the outside air temperature To become approximately the same temperature (To = T), the operation of the ventilation unit 11 returns to the normal 24-hour ventilation operation, assuming that the room air is sufficiently replaced with the outside air. Then, the shutter state of the natural air supply unit 13 is closed, and the cooling operation of the air conditioning unit 12 is performed.

  At this time, not only the air in the building but also the heat capacity of the building materials and furniture in the building is taken into account, and the temperature after the building temperature T and the outside air temperature To become approximately the same temperature (To = T). The temperature of building materials, furniture, etc. may be lowered by continuing ventilation for a certain period of time. Also in this case, since the room temperature is lower than that before ventilation, the air-conditioned unit 12 can be comfortably air-conditioned in a short time by the operation with reduced power consumption. And by the amount that the temperature of building materials, furniture, etc. was lowered, the heat radiation to the indoor air from the subsequent building materials, furniture is suppressed, and it is comfortable in a short time by operation that further reduces the power consumption of the air conditioning unit 12 The air-conditioned space can be made.

  When the heat exchange ventilator 52 is used in the ventilation / air conditioning system according to the present embodiment, when the ventilation unit 11 is in operation, the heat exchange ventilator 52 supplies air in the heat exchanger provided in the heat exchange ventilator 52. When the bypass operation is performed by switching to an air path that does not perform heat exchange with the exhaust, low temperature outside air can be taken in at the same temperature. Thereby, the indoor temperature can be efficiently lowered.

  FIG. 6 is a diagram showing air supply / exhaust air paths during a 24-hour ventilation operation in which normal heat exchange is performed between supply and exhaust in the heat exchange ventilator 52. FIG. 7 is a diagram showing air supply / exhaust air paths during bypass operation in which heat exchange between the supply air and exhaust is not performed in the heat exchange ventilator 52. In the air path shown in FIG. 6, since both the air 61 supplied into the room and the air 62 exhausted from the room pass through the heat exchanger 52a and both perform heat exchange, the air supplied into the room 61 has a higher temperature than the outside air. On the other hand, in the air passage shown in FIG. 7, the air 61 supplied into the room passes through the heat exchanger 52a, but the air 62 exhausted from the room does not pass through the heat exchanger 52a. Therefore, the temperature of the air 61 supplied into the room does not rise.

  In general homes, exhaust fans for exhaust such as kitchens and bathrooms are generally installed. For this reason, if the exhaust fan for exhaust is operated with a large air volume during the operation of the ventilation unit 11, the balance of the air volume between the exhaust fan and the air supply fan is lost, and the room becomes negative pressure. When this negative pressure is large, odor reverse flow from the drainage pipe may occur.

  In order to solve such a problem, in the heat exchange ventilator 52, as shown in FIGS. When all the exhaust ventilation fans ventilate the indoor space with a large air volume, the heat exchange ventilator 52 stops the exhaust and supplies the air, whereby the pressure in the indoor space can be maintained at the atmospheric pressure. . FIG. 8 is a diagram showing an air path during operation of only the air supply in the heat exchange ventilator 52. FIG. 9 is a diagram showing a state during operation of only the air supply in the heat exchange ventilator 52 after the operation of the ventilation / air conditioning system according to the present embodiment in a general home.

  In order to solve the above problem, a method of limiting the number of exhaust ventilation fans to be operated in the ventilation unit 11 and a method of stopping the exhaust ventilation fan by operating a supply ventilation fan with a large air volume. There is a method of operating an exhaust fan for supplying air with a large air volume and operating an exhaust fan for exhaust air with a small air volume. By these methods, the pressure of the indoor space being ventilated can be maintained at atmospheric pressure. FIG. 10 is a diagram showing a state during a ventilation operation with a large air volume, in which the number of exhaust fans for exhaust is limited, after the operation of the ventilation / air conditioning system according to the present embodiment in a general home. FIG. 11 is a diagram showing a state in which only a supply ventilation fan is ventilated with a large air volume after the operation of the ventilation / air conditioning system according to the present embodiment in a general home.

  In FIG. 10, in the heat exchange ventilator 52, exhaust is stopped and only supply of air is performed. In FIG. 10, the number of exhaust ventilation fans to be operated is limited, and the exhaust ventilation fan 38 that exhausts air from the toilet 35, the toilet 36, and the bathroom 37 on the first floor is stopped. The remaining ventilation fans are ventilated with a large air volume. Moreover, in FIG. 11, in the heat exchange ventilator 52, only supply of air is performed with a large air volume. A ventilation fan 34 installed in the Japanese room 33 supplies air with a large air volume. The remaining exhaust fans exhaust air with a small air volume. These are merely examples, and the number of ventilation fans to be used and the air volume may be selected so that the air volume of the exhaust fan and the air supply fan can be balanced.

  FIG. 12 is a block diagram schematically showing an example of the configuration of the computer apparatus 100 that can realize the function as the control unit 18 of the ventilation / air conditioning system according to the present embodiment. As shown in FIG. 12, a computer device 100 includes a display device 101 such as an LCD (Liquid Crystal Display), an input device 102 such as a keyboard, a CPU 103 that performs an operation, a non-volatile memory 104 such as a ROM (Read Only Memory), A volatile memory 105 such as a RAM (Random Access Memory), a display memory 106 that stores a display screen displayed on the display device 101, an external memory interface 107 that is an interface with a removable external memory such as a flash memory, an external device The communication interface 108 and the like that communicate with each other are connected via a bus 109.

  Then, a program stored in the non-volatile memory 104 and describing the processing procedure of the function as the control unit 18 is loaded into the volatile memory 105 and executed by the CPU 103. This program is recorded on a recording medium readable by a computer device such as a hard disk, CD (Compact Disk), ROM (Read Only Memory), MO (Magneto-Optical disk), DVD (Digital Versatile Disk or Digital Video Disk). Alternatively, this program can be distributed via a network (communication line) such as the Internet. In this case, the program is stored on the nonvolatile memory 104 from the information processing terminal connected via the communication interface 108.

  In the above description, the computer capable of realizing the function as the control unit 18 has been described, but it is needless to say that a dedicated device as the control unit 18 may be used.

  According to the above-described embodiment, when it is detected in advance that a person enters the building before the person enters the room, the air in the building is ventilated. As a result, the hot air trapped in the building is discharged to the outside and replaced with the outdoor air. And after the temperature of the air in a building falls by ventilation, a cooling operation is performed by an air-conditioning part. Thereby, according to the embodiment, the temperature in the building reaches a comfortable temperature state as compared with the case where the cooling operation of the air conditioning unit is performed from the state where hot air is accumulated in the building and the indoor temperature is lowered. Time is greatly shortened, and the amount of power required for cooling operation is greatly reduced. Such an effect is particularly effective in summer.

  In addition, as a method for determining whether or not to perform ventilation before the start of the cooling operation, a method of comparing the temperature T in the building with the set temperatures Ts and Tw, or the present year is winter, summer, and intermediate period A method for determining which period is used can be used. Thereby, it can be determined easily whether ventilation is performed before the start of the cooling operation.

  Therefore, according to this Embodiment, the room temperature in the building before a person enters can be made into the space air-conditioned comfortably for a short time, suppressing power consumption.

  In the above description, the indoor space in the building is targeted. However, air conditioning can be performed in the same manner as described above even in a building having a ventilation fan and an air conditioning unit in a hallway or the like. Further, the ventilation / air conditioning system according to the present embodiment can be widely applied to ordinary homes, commercial offices, stores, factories, and the like.

  The techniques shown in the above-described embodiments can be arbitrarily selected and used in combination.

  As described above, the ventilation / air-conditioning system according to the present invention comfortably air-conditions buildings in a short period of time and with low power consumption in ordinary homes, commercial offices, stores, factories, etc. This is useful in the case of a designated space.

  DESCRIPTION OF SYMBOLS 11 Ventilation part, 12 Air conditioning part, 13 Natural supply part, 14 Human sensor, 15 Building temperature sensor, 16 Outside temperature sensor, 17 Entrance detection part, 18 Control part, 32 Range hood, 33 Japanese-style room, 34 For supply Ventilation Fan, 35 Toilet, 36 Toilet, 38 Exhaust Fan, 39 Natural Air Supply Unit, 40 Air Conditioner, 41 Toilet, 42 Western Room, 43 Air Conditioner, 51 Attic, 52 Heat Exchange Ventilator, 52a Heat Exchanger, 53 Piping, 54 eaves, 55 Air supply port, 56 Exhaust port, 61 Air supplied to the room, 62 Air exhausted from the room, 100 Computer device, 101 Display device, 102 Input device, 104 Non-volatile memory, 105 Volatile memory, 106 Display memory, 107 External memory interface, 108 Communication interface, 109 , T building in the temperature, To the outside air temperature, Ts set temperature, Tw the set temperature.

Claims (8)

A ventilation section for ventilating indoor spaces in the building;
An air conditioning unit for air conditioning the indoor space in the building;
An entry detection unit that detects user entry in advance;
A control unit for controlling the operation of the ventilation unit and the air conditioning unit;
Occupancy detection means for detecting the presence or absence of a person in the indoor space;
With
The control unit instructs the operation of the ventilation unit when the user's room is detected in advance in the room detection unit and the presence of a person in the indoor space is not detected by the room detection means. The ventilation operation instruction information is output to the ventilation unit, and the air conditioning unit operates after the temperature of the indoor space becomes the same as the outside air due to ventilation of the indoor space by the ventilation unit according to the ventilation operation instruction information. The air-conditioning operation instruction information is output to the air-conditioning unit, and the user-entry room is detected in advance by the room-entry detection unit, and the presence of a person in the indoor space is detected by the room-detection means. When the ventilation operation instruction information and the air conditioning operation instruction information are not output,
The ventilation unit ventilates the indoor space with a larger air volume than when the ventilation unit functions as a 24-hour ventilation system according to the ventilation operation instruction information,
The air conditioning unit performs air conditioning of the indoor space according to the air conditioning operation instruction information;
Ventilation and air conditioning system characterized by The controller is configured to output the ventilation operation instruction information and the air conditioning operation instruction information when entry of the user is detected in advance and the temperature of the outside air is lower than the temperature of the indoor space;
The ventilation / air-conditioning system according to claim 1. A temperature measuring means in the building for measuring the temperature of the indoor space;
Outside temperature measuring means for measuring the temperature of the outside air;
Providing
The ventilation / air conditioning system according to claim 2. The outside air temperature measuring means is outside air temperature data collecting means for collecting outside air temperature data available to the public through a telecommunication circuit;
The ventilation / air conditioning system according to claim 3. It has a heat recovery function between the air in the indoor space and the outside air, and supplies the outside air to the indoor space and exhausts the air in the indoor space at the same time, or the air supply and the exhaust A heat exchange ventilator that performs one of
The ventilation unit performs ventilation of the indoor space according to the ventilation operation instruction information,
The heat exchange ventilator simultaneously performs the air supply and the exhaust by a bypass operation in which heat exchange between the air supply and the exhaust is not performed;
The ventilation / air conditioning system according to any one of claims 1 to 4, wherein It has a heat recovery function between the air in the indoor space and the outside air, and supplies the outside air to the indoor space and exhausts the air in the indoor space at the same time, or the air supply and the exhaust A heat exchange ventilator that performs one of
By ventilating the indoor space with a larger air volume than when the ventilation unit functions as a 24-hour ventilation system according to the ventilation operation instruction information, and the heat exchange ventilator stops the exhaust and supplies the air Maintaining the pressure of the indoor space at atmospheric pressure,
The ventilation / air conditioning system according to any one of claims 1 to 4, wherein The ventilation section for exhaust is installed in a first area in the building, and the ventilation section for supplying air is installed in a second area other than the first area in the building,
The ventilation section for supplying air is operated with a larger air volume than when functioning as a 24-hour ventilation system,
The ventilation section for exhausting stops exhausting;
The ventilation / air conditioning system according to any one of claims 1 to 3, wherein The ventilation section for exhaust is installed in a first area in the building, and the ventilation section for supplying air is installed in a second area other than the first area in the building,
The ventilation section for supplying air is operated with a larger air volume than when functioning as a 24-hour ventilation system,
Operating with the same air volume as when the ventilation section for exhaust functions as a 24-hour ventilation system;
The ventilation / air conditioning system according to any one of claims 1 to 3, wherein

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