JP6425932B2 - Air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system that opens and closes a window of a building according to weather conditions, the outside air temperature, and the room temperature.

  A building air conditioning system has been proposed that improves the efficiency of natural ventilation in the building by automatically controlling the opening and closing of the windows of the building. Patent Document 1 discloses a technique for performing natural ventilation in a building when the vehicle approaches a building when the user of the system is moving away from the building on a vehicle.

JP, 2010-71012, A

  On the other hand, in recent years, there is a growing need for natural ventilation inside the building when the user moves by means other than the vehicle, so ventilation and air conditioning control of the building is possible regardless of the moving means of the user. It is desirable to have.

  The present invention has been made in consideration of the above-mentioned facts, and it is an object of the present invention to provide an air conditioning system which makes the environment in a building comfortable by appropriately ventilating before the user arrives at the building. Do.

Invention of Claim 1 for solving the above-mentioned subject is the temperature detection means which each detects the air temperature inside and outside a building, the ventilation means which discharges the air in the building outside, and the opening-and-closing mechanism provided in the building The air conditioning means for adjusting the temperature in the building, the receiving means for receiving the information indicating the return time of the user of the building, and the temperature in the building at a predetermined temperature by the return time Therefore, according to the detection result of the temperature detecting means, the time when the information indicating the returning time of the user is received, and the opening time of the window, the ventilating means and the air conditioning means are controlled according to the returning time of the user. An air conditioning system comprising control means, wherein the control means is configured to control the temperature in the building and the temperature in the building while the difference between the temperature inside the building and the temperature outside the building is equal to or greater than a first predetermined value. The difference from the specified temperature is If it is larger than the second predetermined value, the window is opened and the operation of the ventilating means is stopped if the difference between the time when the information indicating the return time is received and the time when the return time is the first predetermined time or more After the first operation time control is performed , the window is opened and the ventilation means is controlled, and the difference between the time when the information indicating the return time and the time when the return time is received is the first time. If the second predetermined time is shorter than the predetermined time and shorter than the first predetermined time, the control for opening the window and stopping the operation of the ventilation means is shorter than the first operation time. After the operation time, control is performed to open the window and operate the ventilation means .

  According to the first aspect of the present invention, natural ventilation in the building can be performed by opening and closing the window based on the return time of the user and the detection result of the environment detection means.

The invention of claim 2 further comprises an environment detection means for detecting a wind direction and a wind speed, and the control means is configured to receive information indicating the return time and the return time. The difference between the temperature inside the building and the temperature outside the building is not less than a first predetermined value, and the difference between the temperature inside the building and the predetermined temperature Is controlled to open the window and to stop the operation of the ventilation means when the environment detection means detects a wind direction and a wind speed suitable for natural ventilation.

According to the second aspect of the present invention, when the wind direction and the wind speed are suitable for natural ventilation, the window can be opened, otherwise the ventilation means can forcibly ventilate the inside of the building.

The invention according to claim 3 relates to the invention according to claim 2 , wherein the wind direction and the wind speed suitable for natural ventilation are wind speeds equal to or higher than a fourth predetermined value and equal to or lower than a fifth predetermined value. .

According to the third aspect of the present invention, it is possible to detect the wind direction and the wind speed suitable for natural ventilation, and shift to natural ventilation.

  According to the invention of claim 4, in the invention according to claim 2 or 3, the control means determines that the difference between the current time and the return time is less than the second predetermined time, and the air temperature in the building If the difference from the predetermined temperature exceeds a third predetermined value, the air conditioning means is operated.

  According to the fourth aspect of the present invention, the air conditioning means can be operated when there is no time until the user returns home and the difference between the temperature inside the building and the predetermined temperature is large.

  In the invention according to a fifth aspect, in the invention according to the fourth aspect, the control means sets the first predetermined time and the second predetermined time longer in summer than in other seasons.

  According to the invention as set forth in claim 5, the time for operating the air conditioning means can be made longer in summer than in other seasons.

  As described above, according to the first aspect of the present invention, natural ventilation is appropriately performed until the user arrives at the building by opening and closing the window based on the return time of the user and the detection result of the environment detection means. It has the effect of making the environment in the building comfortable.

According to the invention described in claim 2, when the wind direction and the wind speed are suitable for natural ventilation, the user opens the window, otherwise the user forcibly ventilates the inside of the building by the ventilation means. It has the effect of making the environment inside the building comfortable by the time it arrives at the building.

According to the third aspect of the present invention, it is possible to detect the wind direction and the wind speed suitable for natural ventilation and to shift to natural ventilation.

  According to the invention described in claim 4, when there is no time until the user returns home and the difference between the air temperature in the building and the predetermined temperature is large, the user operates the air conditioning means to arrive at the building Have the effect of making the environment in the building comfortable.

  According to the fifth aspect of the present invention, the environment in the building is made comfortable before the user arrives at the building by making the time for operating the air conditioning means longer in summer than in other seasons. Have an effect.

It is a schematic diagram showing an example of a building provided with an air-conditioning system concerning an embodiment of the invention. It is a block diagram showing a schematic structure of HEMS in an air conditioning system concerning an embodiment of the invention. It is the schematic which showed the flow of the air in the building in the air conditioning system which concerns on embodiment of this invention, (A) is the 1st operation mode which turns off an air conditioner and a ceiling fan while opening all windows, (B Shows the second operation mode in which the air conditioner is off and the ceiling fan is on with the full window open, and (C) shows the third mode of operation with the air conditioner on and the ceiling fan off with the full window closed. ing. (A) shows an example of control when there is a sufficient time from the specification of return time by the user to the return and the fall of outside air temperature is small, (B) is a sufficient time from specification of the return time by the user to the return It is a schematic diagram which shows an example of control in case external temperature falls sharply from a state where it is and both outdoor temperature and indoor temperature are high. (A) shows an example of control when the time from the specification of return time by the user to return is long and the difference between the room temperature and the set temperature is small, (B) is the time from specification of return time by the user to return It is the schematic which shows an example of control in case an is extremely short, respectively. It is the flowchart which showed an example of control of the air-conditioning system which concerns on this Embodiment in a summer season (June-September). It is the flowchart which showed an example of control of the air-conditioning system which concerns on this Embodiment in the middle period (April-May, October-November).

  Hereinafter, an example of the present embodiment will be described in detail with reference to the drawings. FIG. 1: is schematic which shows an example of the building 100 provided with the air conditioning system 10 which concerns on this Embodiment. As shown in FIG. 1, in the building 100 provided with the air conditioning system 10 according to the present embodiment, an outside air temperature sensor 40 is provided on the outer wall of the building 100 and an indoor temperature sensor 42 is provided in the room of the building 100.

  The outside air temperature sensor 40 is a sensor that detects the outside air temperature of the building 100. As an example, the outside air temperature sensor 40 is an electric thermometer that detects the outside air temperature based on a change in electrical resistance due to the temperature of platinum. The indoor temperature sensor 42 is, for example, an electric thermometer that detects the temperature inside the room based on the change in the electrical resistance due to the temperature of platinum, as in the outside air temperature sensor 40.

  At the top of the roof 36 of the building 100, a rainfall sensor 44 for detecting precipitation and an anemometer 46 for detecting the wind direction and the wind speed are provided. The rainfall sensor 44 includes, for example, an LED that is an infrared light emitting element, a photodiode that is a light receiving element, a lens that forms an optical path of infrared light, and a control circuit inside a glass case. The infrared radiation emitted from the LED is totally reflected by the glass of the case, but if water droplets are present on the surface of the case, a part of the infrared radiation passes through the water droplets and is emitted to the outside, thereby reducing the amount of reflection on the glass. As a result, the amount of light entering the photodiode, which is a light receiving element, decreases, so that raindrops can be detected.

  The wind direction anemometer 46 is, for example, an anemometer integrated with a wind direction meter, and detects the wind speed from the rotational speed of a wind turbine provided at the tip of the wind direction meter.

  The building 100 is provided with windows 50, 52, 54, 56, 58. The windows 50 are so-called skylights (top lights) and cooperate with the ceiling fan 60 to discharge the air in the building 100. Further, in the building 100, an air conditioner 62 is provided.

  The HEMS (Home Energy Management System) 30, which is a control device, is connected to the outdoor temperature sensor 40, the rainfall sensor 44, the wind direction anemometer 46, and the indoor temperature sensor 42 for measuring the temperature inside the building 100. There is.

  In the present embodiment, the outside air temperature sensor 40, the room temperature sensor 42, the rainfall sensor 44, and the wind direction anemometer 46 are environment detection means for detecting precipitation, air volume, and the temperature inside and outside the building 100.

  The HEMS 30 controls opening / closing of the windows 50, 52, 54, 56, 58 and the air conditioner 62 based on the detection results of these sensors. In the present embodiment, in each of the windows 50, 52, 54, 56, 58, an actuator for opening and closing these windows and a sensor (both not shown) for detecting the opening and closing states of these windows are respectively provided. It is provided.

  The sensor that detects the open / close state of the window and the locking state is, for example, a Hall sensor or the like that detects a magnetic field of a sensor magnet that is a permanent magnet provided on the window frame and outputs a predetermined signal. When the window is opened, the Hall sensor can not detect the magnetic field from the sensor magnet because the positional relationship between the sensor magnet and the Hall sensor changes. As a result, since the Hall sensor does not output a predetermined signal, the HEMS 30 can determine that the window is opened when the predetermined signal from the Hall sensor is interrupted. In the present embodiment, the HEMS 30 grasps the open / close state of each window by the hall sensor, and for example, when the window needs to be closed, the control to maintain the closed state when the window is already closed I do. The HEMS 30 also performs control to maintain the open state when the window needs to be opened and the window is already open.

  The HEMS 30 performs control to open the window when it is necessary to open the window when it is closed, and controls to close the window when it is necessary to close the window when it is open. I do. Further, the HEMS 30 is connected to the network 80 via a termination device 70 which is a gateway. An information server 82 functioning as a web server is connected on the network 80, and a command to specify a return time from the portable information terminal 84 of the user via the information server 82 and the network is sent to the HEMS 30. Can. The HEMS 30 can also acquire weather information such as a weather forecast via the network 80.

  FIG. 2 is a block diagram showing a schematic configuration of the HEMS 30 in the air conditioning system 10 according to the present embodiment. The HEMS 30 includes a central processing unit (CPU) 12, a hard disk drive (HDD) 14, a random access memory (RAM) 16, a network I / F unit 18, and a read only memory (ROM) 20. The HEMS 30 also includes a display unit 22, an operation input unit 24, and a bus 26, and has functions of a terminal for inputting information and a terminal for displaying information.

  The CPU 12 is responsible for the entire operation of the HEMS, and the HDD 14 is a non-volatile memory in which programs for opening and closing windows and controlling the air conditioner 62, OS (Operating System), and data for controlling opening and closing of windows are recorded. It is an apparatus. The RAM 16 is a volatile storage device in which an OS, a program or data is deployed. The network I / F unit 18 is for connecting to a network, and is configured of a NIC (Network Interface Card) and its driver. The ROM 20 is a non-volatile storage device in which a boot program or the like operating at the time of startup of the HEMS is stored. The display unit 22 displays information on the air conditioning system 10 to the user. The operation input unit 24 is used when the user inputs an operation or information of the air conditioning system 10, and includes, as an example, an input device such as a touch panel and a keyboard, and a pointing device such as a trackball, a pen tablet or a mouse. . The bus 26 is used when exchanging information.

  FIG. 3 is a schematic view showing the flow of air in the building 100 in the air conditioning system 10 according to the present embodiment. (A) is a first operation mode in which all windows are opened and the air conditioner 62 and the sealing fan 60 are turned off, and (B) is a second operation in which all windows are opened and the air conditioner 62 is off and the sealing fan 60 is turned on Mode (C) shows a third operation mode in which all windows are closed, the air conditioner 62 is turned on, and the ceiling fan 60 is turned off. The first operation mode is for natural ventilation, the second operation mode is for forced ventilation with a sealing fan 60, and the third operation mode is for controlling the room temperature with an air conditioner without ventilation.

  Fig. 4 shows an example of control when (A) there is a sufficient time from the specification of return time by the user to the return and the fall of the outside air temperature is small, and (B) shows the return from specification of the return time by the user It is the schematic which each shows an example in case there exists sufficient time until the outside air temperature falls rapidly from a state with high outside air temperature and room temperature. FIGS. 4A and 4B are examples in which the user specifies the return time by 11:00 and 13:00, and the return time is specified by 19:00.

  In FIG. 4A, natural ventilation is performed in the first operation mode after the user specifies the return time by the user, and in the case of natural ventilation, ventilation is forcibly performed in the second operation mode when the room temperature does not fall to the set temperature. Further, the room temperature is lowered to the set temperature by the third operation mode using the air conditioner 62. In the present embodiment, the set temperature is 25 ° C. as an example.

  In FIG. 4B, natural ventilation is performed in the first operation mode after the user specifies the return time by the user, and after the room temperature starts to fall in natural ventilation, forced ventilation is performed in the second operation mode. The room temperature has been lowered to the set temperature.

  As shown in FIGS. 4 (A) and 4 (B), in the present embodiment, when there is a sufficient time, such as six hours from the user's specification of the time of return from home to the time when the user returns home, The room temperature can be controlled to a comfortable level by utilizing ventilation as much as possible.

  Fig. 5 shows an example of control in the case where (A) is a long time from specification of return time by the user to return and there is a small difference between room temperature and set temperature, and (B) from specification of return time by the user. It is the schematic which shows an example of control in case the time to return home is extremely short, respectively. FIG. 5A shows an example in which the user specifies the return home time at 11:00 and 13:00 and the return home time is specified at 19:00. FIG. 5B shows an example in which the user specifies the return time at 11:00 and 18:40, and the return time is specified at 19:00.

  In FIG. 5A, after the user specifies the return time, natural ventilation is performed in the first operation mode, and the room temperature is lowered to the set temperature only by natural ventilation. In FIG. 5B, it is difficult to lower the room temperature to the set temperature by either natural ventilation or forced ventilation, so the air conditioner 62 is used to lower the room temperature.

  As shown in FIGS. 5A and 5B, in the present embodiment, when the time from the specification of the return time by the user to the return of the user is short, the delay until the return time and the room temperature In some cases, the air conditioner 62 is positively used to control the room temperature to a comfortable level based on the outside air temperature.

  FIG. 6 is a flowchart showing an example of control of the air conditioning system 10 according to the present embodiment in the summer season (June-September). In step 600, the user designates the return time from the portable information terminal 84. In step 602, it is determined from the weather information acquired via the network 80 and the detection result of the rainfall sensor 44 whether there is no problem if the window is opened. For example, it is determined that opening the window is not a problem when the rainfall probability is 30% or less until the returning time when the acquired weather information is designated and the rainfall sensor 44 does not detect the rainfall.

  In the case of an affirmative determination in step 602, it is determined whether or not there is 30 minutes or more from the time when the return time is specified in step 604 to the return time. In the case of a positive determination in step 604, it is determined in step 606 whether the difference between the room temperature and the outside air temperature is 2 ° C. or more.

  In the case of a positive determination in step 606, it is determined in step 608 whether the difference between the indoor temperature and the set temperature is 5 ° C. or less. In the case of a positive determination in step 608, it is determined whether or not the wind direction is at least 0.5 m / s because there is an optimum wind by the wind direction and anemometer in step 610. The case where the wind direction is optimal is a wind direction where the wind enters the windows 50 to 58 of the building 100.

  In the case of a positive determination in step 610, it is determined in step 612 whether or not the wind speed is 5 m / s or less. In the case of a positive determination in step 612, control of the first operation mode is performed in step 614.

  In step 616, the absolute value of the difference between the room temperature and the set temperature is 1 ° C. when ventilation is performed in one or both of the first and second operation modes and the current time is less than 30 minutes until the return time. It is determined whether it is the following or not, and in the case of a positive determination, the process is ended. If a negative determination is made in steps 602, 604, 606, 612, and 616, control in the third operation mode is performed in step 618, and the process ends.

  In the case of a negative determination in step 608, it is determined in step 620 whether there are three hours or more before returning home. If the determination in step 620 is affirmative, control in the first operation mode is performed for 2 hours in step 622, and then control in the second operation mode is performed, and the procedure proceeds to step 616.

  In the case of a negative determination in step 620, it is determined in step 624 whether there are two hours or more before returning home. If the determination in step 624 is affirmative, control in the first operation mode is performed for one hour in step 626, and then control in the second operation mode is performed, and the procedure proceeds to step 616. In the case of a negative determination in step 624, control in the second operation mode is performed in step 628, and the procedure proceeds to step 616.

  In the case of a negative determination in step 610, it is determined in step 630 whether the return time is 9 to 19 o'clock. In the case of a positive determination in step 630, control in the second operation mode is performed in step 632, and the procedure proceeds to step 616. In the case of a negative determination in step 630, the procedure proceeds to step 620.

  As described above, in the air conditioning system 10 according to the present embodiment, by utilizing natural ventilation as much as possible in the summer, the indoor temperature can be lowered to the set temperature while suppressing energy consumption.

  FIG. 7 is a flowchart showing an example of control of the air conditioning system 10 according to the present embodiment in the middle period (April to May, October to November). In step 700, the user designates the return time from the portable information terminal 84. In step 702, it is determined from the weather information acquired via the network 80 and the detection result of the rainfall sensor 44 whether there is no problem if the window is opened. For example, it is determined that opening the window is not a problem when the rainfall probability is 30% or less until the returning time when the acquired weather information is designated and the rainfall sensor 44 does not detect the rainfall.

  In the case of a positive determination in step 702, it is determined whether or not there is 15 minutes or more from the time when the return time is specified in step 704 to the return time. If the determination in step 704 is affirmative, it is determined in step 706 whether the absolute value of the difference between the room temperature and the outside air temperature is 2 ° C. or more.

  In the case of a positive determination in step 706, it is determined in step 708 whether the absolute value of the difference between the room temperature and the set temperature is 5 ° C. or less. In the case of a positive determination in step 708, it is determined in step 710 whether or not the wind direction is at least 0.5 m / s due to the optimum wind direction by the anemometer. When the wind direction is optimal, the wind is introduced into the windows 50 to 58 of the building 100.

  In the case of a positive determination in step 710, it is determined in step 712 whether the wind speed is 5 m / s or less. In the case of a positive determination in step 712, control of the first operation mode is performed in step 714.

  In step 716, the absolute value of the difference between the room temperature and the set temperature is 1 ° C. when ventilation is performed in one or both of the first and second operation modes and the current time is less than 15 minutes until the return time. It is determined whether it is the following or not, and in the case of a positive determination, the process is ended. If a negative determination is made in steps 702, 704, 706, 712, and 716, control in the third operation mode is performed in step 718, and the process ends.

  In the case of a negative determination in step 708, it is determined in step 720 whether there are two hours or more before returning home. If the determination in step 720 is affirmative, control in the first operation mode is performed for 1 hour in step 722, and then control in the second operation mode is performed, and the procedure proceeds to step 716.

  In the case of a negative determination in step 720, it is determined in step 724 whether there is an hour or more before returning home. In the case of a positive determination in step 724, after performing control in the first operation mode for 30 minutes in step 726, control in the second operation mode is performed, and the procedure proceeds to step 716. In the case of a negative determination in step 724, control in the second operation mode is performed in step 728, and the procedure proceeds to step 716.

  If the determination in step 710 is negative, it is determined in step 730 whether the return time is 10 to 18 o'clock. In the case of a positive determination in step 730, control in the second operation mode is performed in step 732 and the procedure proceeds to step 716. In the case of a negative determination in step 730, the procedure proceeds to step 720.

  As described above, in the air conditioning system 10 according to the present embodiment, the indoor temperature can be lowered to the set temperature while suppressing energy consumption by utilizing natural ventilation as much as possible even in the middle period.

  As described above, according to the present embodiment, the environment in the building can be made comfortable by appropriately performing natural ventilation before the user arrives at the building.

10 air conditioning system 12 CPU
14 HDD
16 RAM
18 Network I / F unit 20 ROM
22 Display 24 Operation Input 26 Bus 30 HEMS
36 roof 40 outdoor temperature sensor 42 indoor temperature sensor 44 rainfall sensor 46 wind direction anemometer 50, 52, 54, 56, 58 window 50 window 60 ceiling fan 62 air conditioner 82 information server 84 mobile information terminal 100 building 100

Claims (5)

Temperature detection means for respectively detecting the temperature inside and outside the building;
Ventilation means for exhausting the air in the building to the outside;
A window having an opening and closing mechanism provided in the building;
An air conditioning means for adjusting the temperature in the building;
Receiving means for receiving information indicating the time of return of the building user;
In order to set the air temperature in the building to a predetermined temperature by the return time, the detection result of the temperature detection means, the time at which the information indicating the return time of the user is received, and the return time of the user Control means for controlling the opening and closing mechanism of the window, the ventilation means and the air conditioning means, respectively;
An air conditioning system equipped with
The control means is configured such that the difference between the temperature inside the building and the temperature outside the building is greater than or equal to a first predetermined value, and the difference between the temperature inside the building and the predetermined temperature is from a second predetermined value If the difference is larger than the first predetermined time, the control for opening the window and stopping the operation of the ventilating means is performed. After the operation time is performed , control is performed to open the window and operate the ventilation means, and the difference between the time when the information indicating the return time is received and the return time is less than the first predetermined time and the first After performing the control for opening the window and stopping the operation of the ventilating means for a second operation time shorter than the first operation time if the second predetermined time is shorter than the first predetermined time , Control to open the window and operate the ventilation means Cormorant air conditioning system. The system further comprises environment detection means for detecting the wind direction and the wind speed,
The control means determines that the difference between the time when the information indicating the return time is received and the return time is equal to or longer than a first predetermined time, and the difference between the temperature inside the building and the temperature outside the building is first When the difference between the temperature inside the building and the predetermined temperature is equal to or less than a second predetermined value and the environment detection means detects a wind direction and a wind speed suitable for natural ventilation The air conditioning system according to claim 1, wherein control is performed to open the window and to stop the operation of the ventilation means.   The air conditioning system according to claim 2, wherein a wind direction and a wind speed suitable for natural ventilation are wind speeds equal to or more than a fourth predetermined value and equal to or less than a fifth predetermined value when the wind enters the window.   When the difference between the current time and the return time is less than the second predetermined time and the difference between the temperature inside the building and the predetermined temperature exceeds a third predetermined value, the control means may The air conditioning system according to claim 2 or 3, wherein the air conditioning means is operated. The air conditioning system according to claim 4, wherein the control means sets the first predetermined time and the second predetermined time longer in summer than in other seasons.

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