JP7080705B2 - Air conditioning control device - Google Patents

Description

The present invention relates to an air conditioning control device.

In Patent Document 1, the estimated time when the vehicle driven by the user arrives at the home is calculated, and the activation of the electric device is based on the calculated estimated time and the reservation information including the control contents for the electric device installed at the home. A technique for setting a time and starting an operation at a start time is disclosed. In Patent Document 1, the required time is obtained by using the required time correspondence data in which the required time is associated with each control content, and for the air conditioner, the required time is calculated from the room temperature at the start of operation and the set temperature which is the target value. It is described that the function uniquely defined is used as the required time data.

Japanese Unexamined Patent Publication No. 2015-95721

However, the time required for the room temperature to reach the target temperature when operating the air conditioner depends on the characteristics of the building such as the scale and heat insulation performance of the building to be air-conditioned. On the other hand, in the technique described in Patent Document 1, since the required time is uniquely determined from the room temperature and the target temperature to set the start time of the air conditioner, the accuracy of setting the start time of the air conditioner is insufficient. Therefore, as shown in FIG. 15, for example, when the room temperature reaches the target temperature at a timing significantly earlier than the estimated arrival time, the room temperature is from the time when the room temperature reaches the target temperature to the time when the estimated arrival time is reached. There is a problem that energy is wasted for maintenance, or the room temperature may not reach the target temperature even at the estimated arrival time.

In consideration of the above facts, the present invention can improve the accuracy of matching the timing at which the room temperature reaches the target room temperature with the air conditioning completion target time when the air conditioner is operated according to the air conditioning completion target time. The purpose is to get.

In the first aspect, a storage unit that stores operation record data including data representing changes in the room temperature of the building when the air conditioner installed in the building has been operated in the past, and an air conditioning completion target time are set. In this case, the control unit that starts the operation of the air conditioner so that the room temperature of the building reaches the target room temperature set at the air conditioning completion target time based on the operation record data stored in the storage unit. , Includes.

In the first aspect, the operation record data stored in the storage unit includes data representing a change in the room temperature of the building when the air conditioner installed in the building has been operated in the past, and the room temperature represented by the data. The changes in the above reflect the characteristics of the building such as the scale and heat insulation performance of the building. Then, in the first aspect, when the air conditioning completion target time is set, the operation of the air conditioner is started so that the room temperature of the building reaches the set target room temperature at the air conditioning completion target time based on the operation record data. .. As a result, when operating the air conditioner according to the air conditioning completion target time, the time required from the start of operation of the air conditioner until the room temperature of the building reaches the set target room temperature varies depending on the characteristics of the building. By taking this into consideration, it is possible to improve the accuracy of matching the timing at which the room temperature reaches the target room temperature with the air conditioning completion target time.

In the second aspect, the operation record data includes data representing the target room temperature and the outside air temperature when the air conditioner has been operated in the past, and the control unit has the target room temperature and the outside of the operation record data. The operation start time of the air conditioner is calculated based on the data representing the operation results under the operating conditions in which the difference from the temperature is close to the current operation.

The operating efficiency of an air conditioner is affected by the outside air temperature (specifically, the difference between the target room temperature and the outside air temperature). In the second aspect, among the operation record data including the data showing the target room temperature and the outside air temperature when the air conditioner is operated, the operation under the operating conditions where the difference between the target room temperature and the outside air temperature is close to the current operation. The operation start time of the air conditioner is calculated based on the data representing the actual results. As a result, when operating the air conditioner according to the set target time for completing air conditioning, the time required from the start of operation of the air conditioner until the room temperature of the building reaches the set target room temperature (details). Is also taken into consideration that it fluctuates according to the difference between the target room temperature and the outside temperature), so that the accuracy of matching the timing when the room temperature reaches the target room temperature with the air conditioning completion target time can be further improved.

A third aspect further includes a receiving unit that receives weather forecast information that predicts the weather conditions around the building, and the control unit is the air conditioner based on the weather prediction information received by the receiving unit. The change in the room temperature of the building when the air conditioner is not operated is predicted, and the operation start time of the air conditioner is calculated in consideration of the predicted value of the change in the room temperature of the building when the air conditioner is not operated.

The room temperature of the building changes under the influence of the outside air temperature of the building even when the air conditioner is not operated, and the change of the room temperature of the building when the air conditioner is not operated is the change of the room temperature of the building when the air conditioner is operated. Affects the time it takes for the room temperature to reach the set target room temperature. On the other hand, in the third aspect, the weather forecast information that predicts the weather conditions around the building is received, and the change in the room temperature of the building when the air conditioner is not operated is predicted based on the received weather forecast information. .. Then, the operation start time of the air conditioner is calculated in consideration of the predicted value of the change in the room temperature of the building when the air conditioner is not operated. As a result, it is also taken into consideration that the time required from the start of operation of the air conditioner until the room temperature of the building reaches the set target room temperature varies depending on the room temperature of the building when the air conditioner is not operated. Therefore, the accuracy of matching the timing at which the room temperature reaches the target room temperature with the air conditioning completion target time can be further improved.

In the fourth aspect, the control unit predicts a change in the outside air temperature of the building and a change in the room temperature of the building when the air conditioner is not operated until the control unit starts the operation of the air conditioner. The value is compared with the measured value, and when the difference between the predicted value and the measured value becomes a predetermined value or more, the operation start time is calculated again.

In the third aspect described above, the weather conditions around the building represented by the weather forecast information and the change in the room temperature of the building when the air conditioner is not operated are only predicted values. Therefore, if the weather conditions around the building differ from the predicted values, it is possible that the changes in the outside air temperature of the building and the changes in the room temperature of the building when the air conditioner is not operated may differ from the predicted values. On the other hand, in the fourth aspect, the predicted value of the change in the outside air temperature of the building and the predicted value of the change in the room temperature of the building when the air conditioner is not operated are measured values until the operation of the air conditioner is started. The comparison is performed, and when the difference becomes greater than or equal to a predetermined value, the operation start time is calculated again. As a result, when the weather conditions around the building differ from the forecast, it is possible to prevent the accuracy of matching the timing at which the room temperature reaches the target room temperature with the target time for completing the air conditioning to decrease.

The first aspect has the effect that when the air conditioner is operated according to the set air conditioning completion target time, the accuracy of matching the timing at which the room temperature reaches the target room temperature with the air conditioning completion target time can be improved. Have.

The second aspect and the third aspect have an effect that the accuracy of matching the timing at which the room temperature reaches the target room temperature with the air conditioning completion target time can be further improved.

The fourth aspect has an effect that when the weather conditions around the building differ from the forecast, it is possible to suppress a decrease in the accuracy of matching the timing when the room temperature reaches the target room temperature with the air conditioning completion target time.

It is a schematic block diagram of the air conditioner which concerns on 1st Embodiment. It is a flowchart which shows an example of reserved operation control processing which concerns on 1st Embodiment. It is a diagram which shows an example of the time change of the room temperature shown by the operation record data. It is a diagram which shows an example of the time change of the room temperature according to the scale of a building. It is a diagram which shows an example of the time change of the room temperature according to the heat insulation performance of a building. It is a diagram which shows an example of the time change of the room temperature when the control which concerns on 1st Embodiment is applied. It is a flowchart which shows an example of reserved operation control processing which concerns on 2nd Embodiment. It is a diagram which shows an example of the time change of the room temperature according to the difference between the target room temperature and the outside air temperature. It is a schematic block diagram of the air conditioner which concerns on 3rd Embodiment. It is a flowchart which shows an example of reserved operation control processing which concerns on 3rd Embodiment. It is a diagram which shows an example of the outside temperature predicted value obtained from the weather forecast information. It is a diagram which shows an example of the measured value of the outside air temperature and the room temperature during the operation stop represented by the operation stop temperature data. It is a diagram which shows an example of the room temperature predicted value obtained from the outside temperature predicted value and the operation stop temperature data. It is a flowchart which shows an example of reserved operation control processing which concerns on 4th Embodiment. It is a diagram which shows an example of the time change of room temperature in the prior art.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. In the following, a house as an example of a building is provided with an air conditioner for air-conditioning the entire building, and a reserved operation is performed according to an air-conditioning completion target time set by a resident (referred to as a user) of the house. To explain. However, the building is not limited to a house, nor is it limited to air-conditioning the entire building.

[First Embodiment]
As shown in FIG. 1, the air conditioner 12 installed in the house 10 is operated by an air conditioner outdoor unit 14 installed outdoors in the house 10, an air conditioner indoor unit 34 installed in the room of the house 10, and a user. The air conditioning operating device 24 is included. The air-conditioning outdoor unit 14 and the air-conditioning indoor unit 34 are connected by a plurality of pipes and electrical wiring through which a heat exchange medium flows.

The air-conditioning outdoor unit 14 has an operating state measuring unit 16 that measures an operating state such as the temperature of each part in the air-conditioning outdoor unit 14 when the air-conditioning device 12 is operating, and an outside temperature measuring unit 18 that measures the outside temperature To of the house 10. It includes an indoor / outdoor communication unit 22 that communicates with the outdoor unit operation control unit 20 and the air conditioning indoor unit 34. The outdoor unit operation control unit 20 cooperates with the air conditioner indoor unit 34 during the operation of the air conditioner 12 so that the indoor temperature (room temperature Tr) of the house 10 becomes the target temperature Ts, and the compressor of the air conditioner outdoor unit 14 is used. Etc. to control the operation.

The air conditioner operation device 24 includes an operation input unit 26 for the user to input an operation, a display unit 28 for displaying the operating state of the air conditioner 12 and a target room temperature Ts, a room temperature measurement unit 30 for measuring the room temperature Tr, and air conditioning. It is provided with an indoor unit communication unit 32 that performs wireless communication such as infrared communication with the indoor unit 34. The operations that the user can instruct to the air conditioner 12 via the air conditioner 24 include switching between operation / stop of the air conditioner 12, switching of the operating state (cooling / heating / dehumidification, etc.), setting of the target room temperature Ts, and the like. In addition to this, the setting of reserved operation can also be mentioned.

In the reserved operation in the present embodiment, for example, even if the user is out and the house 10 is unmanned, the room temperature Tr of the air conditioner 12 reaches the target room temperature Ts at the set air conditioning completion target time tend. This is an operation mode in which the operation is reserved in advance. As the air-conditioning completion target time tend, for example, the estimated time when the user who has gone out returns to the house 10 is set.

It is also possible to make the mobile terminal owned by the user function as the air conditioning operation device 24. In this case, if the mobile terminal has a function to acquire position information from GPS satellites or the like, the air conditioning completion target time tend is automatically set according to the position information of the mobile terminal owned by the user who is out. It is also possible to transmit the signal to the air conditioner 12 (air conditioner indoor unit 34).

The air conditioner indoor unit 34 is a room temperature measurement unit 36 that measures an operating state such as the temperature of each part in the air conditioner indoor unit 34 when the air conditioner 12 is operating, and a room temperature measurement that measures the indoor temperature (room temperature Tr) of the house 10. A unit 38, an indoor unit operation control unit 40, an indoor / outdoor communication unit 46 that communicates with the air conditioner outdoor unit 14, and an operation device communication unit 48 that performs wireless communication such as infrared communication with the air conditioner operation device 24. ing. The indoor unit operation control unit 40 cooperates with the air conditioner outdoor unit 14 when the air conditioner 12 is operated so that the indoor temperature (room temperature Tr) of the house 10 becomes the target temperature Ts, and the blower motor of the air conditioner indoor unit 34. Etc. to control the operation.

Further, in the present embodiment, the air conditioning indoor unit 34 also includes an operation record storage unit 42 and a reserved operation control unit 44. The operation record storage unit 42 stores operation record data representing the operation record when the air conditioner 12 has been operated in the past. This operation record data includes data showing changes in room temperature Tr (see FIG. 3) when the air conditioner 12 has been operated in the past, and other than that, target room temperature Ts, outside air temperature To, and operation state measuring units 16, 36. Includes data such as operating conditions measured by. When the reserved operation is set via the air conditioning operation device 24, the reserved operation control unit 44 sets the room temperature Tr to the target room temperature at the air conditioning completion target time tend based on the operation record data stored in the operation record storage unit 42. The reserved operation of the air conditioner 12 is controlled so as to reach Ts. The operation record storage unit 42 is an example of a storage unit, and the reserved operation control unit 44 is an example of a control unit.

Next, the operation of the first embodiment will be described. In the first embodiment, the reserved operation control unit 44 performs the reserved operation control process shown in FIG. 2 when the reserved operation is set. In step 100 of the reserved operation control process, the reserved operation control unit 44 acquires the air conditioning completion target time tend set by the user via the air conditioning operation device 24. Further, in step 102, the reserved operation control unit 44 acquires the target room temperature Ts set by the user via the air conditioning operation device 24, and in the next step 112, the reserved operation control unit 44 receives from the room temperature measuring unit 38. Obtain the current room temperature Tr.

In step 115, the reserved operation control unit 44 acquires the slope ΔT of the time change of the room temperature in the past operation of the air conditioner 12 based on the operation record data stored in the operation record storage unit 42. When the air conditioner 12 is in operation, as shown in FIG. 3 as an example, the room temperature Tr shows a time change in which the difference from the target room temperature Ts gradually decreases. Further, the slope ΔT of the time change of the room temperature Tr during the operation of the air conditioner 12 changes according to the characteristics of the house 10 such as the scale of the house 10 and the heat insulating performance.

That is, as shown in FIG. 4, when the scale of the house 10 is large, the slope ΔT of the time change of the room temperature Tr during the operation of the air conditioner 12 is smaller than that when the scale of the house 10 is small. Further, as shown in FIG. 5, when the heat insulating performance of the house 10 is low, the slope ΔT of the time change of the room temperature Tr during the operation of the air conditioner 12 is smaller than that when the heat insulating performance of the house 10 is higher. Become. The slope ΔT of the time change of the room temperature Tr during the operation of the air conditioner 12 actually varies due to the influence of other parameters such as the outside air temperature To, but as an example, in step 115, the other parameters are changed. The average slope ΔT obtained by smoothing the influence is obtained from the operation record data by applying, for example, regression analysis.

In the next step 119, the reserved operation control unit 44 acquires in step 100 the timing at which the room temperature Tr acquired in step 112 reaches the target room temperature Ts acquired in step 102 based on the inclination ΔT acquired in step 115. The operation start time tstart for matching the air conditioning completion target time tend is calculated. The operation start time tstart can be calculated from the following equation (1), for example.
tstart = tend－ {(Ts－Tr) / ΔT}… (1)

In the above equation (1), when it is assumed that the room temperature Tr changes with the inclination ΔT during the operation of the air conditioner 12, the operation start time for matching the timing at which the room temperature Tr reaches the target room temperature Ts with the air conditioning completion target time tend The tstart is calculated. (Ts—Tr) / ΔT in the equation (1) corresponds to the time required for the room temperature Tr to reach the target room temperature Ts. Since the characteristics of the house 10 such as the scale and heat insulation performance of the house 10 are reflected in the time change gradient ΔT of the room temperature Tr obtained from the operation record data, the room temperature Tr is the target room temperature by using this gradient ΔT. The operation start time tstart is obtained in consideration of the fact that the time required to reach Ts varies depending on the characteristics of the house 10.

In step 126, the reserved operation control unit 44 determines whether or not the operation start time tstart calculated in step 119 has arrived, and if the determination is negative, repeats step 126 until the determination is affirmed. Then, if the determination in step 126 is affirmed, the process proceeds to step 128. In step 128, the reserved operation control unit 44 starts the operation of the air conditioner 12 by the outdoor unit operation control unit 20 and the indoor unit operation control unit 40. Further, the reserved operation control unit 44 starts a process of periodically acquiring the room temperature Tr from the room temperature measuring unit 38 and storing it as new operation record data in the operation record storage unit 42, and ends the reserved operation control process.

By the above processing, the characteristics of the house 10 such as the scale and the heat insulation performance of the house 10 are taken into consideration. Can be accurately matched to. Further, as is clear from comparing FIG. 6 with FIG. 15, it is not necessary to operate the air conditioner 12 for maintaining the room temperature Tr at the target room temperature Ts before the air conditioning completion target time tend, so that energy is wasted. It is possible to suppress the consumption of air conditioning.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. Since the second embodiment has the same configuration as the first embodiment, the same reference numerals are given to the respective parts to omit the description of the configuration, and the operation of the second embodiment is different from that of the first embodiment. Explain the part. As shown in FIG. 7, the reserved operation control process according to the second embodiment is different from the first embodiment in that step 115 is omitted and steps 106, 116, 118 are added.

In step 106 of the reserved operation control process, the reserved operation control unit 44 acquires the current outside air temperature To from the outside air temperature measuring unit 18 of the air conditioning outdoor unit 14. The operation record data stored in the operation record storage unit 42 contains operation record data in which the temperature difference (Ts-To) between the target room temperature Ts and the outside air temperature To, which is the operation condition at the time of operation, is different. .. Therefore, in step 116, the reserved operation control unit 44 sets the current target of the temperature difference (Ts-To), which is the operating condition during operation, from the operation record data stored in the operation record storage unit 42. The temperature difference (Ts-To) between the room temperature Ts and the outside air temperature To and the operation record data within a predetermined value are selected.

Then, in step 118, the reserved operation control unit 44 acquires the slope ΔT of the time change of the room temperature Tr in the past operation of the air conditioner 12 from the operation record data selected in step 116. The slope ΔT of the time change of the room temperature Tr acquired in step 118 is used for the calculation of the operation start time tstart in step 119, as in the first embodiment.

The operating efficiency when the air conditioner 12 is operated changes according to the outside air temperature To, more specifically, the temperature difference (Ts—To) between the target room temperature Ts and the outside air temperature To. Then, as the operation efficiency changes according to the difference in temperature difference (Ts—To), the slope ΔT of the time change of the room temperature Tr during the operation of the air conditioner 12 also varies. As an example, as shown in FIG. 8, when the temperature difference (Ts-To) is large, the operating efficiency of the air conditioner 12 is low as compared with the case where the temperature difference (Ts-To) is small, and the operation of the air conditioner 12 is performed. The slope ΔT of the time change of the room temperature Tr at time becomes smaller.

On the other hand, in the second embodiment, the temperature difference (Ts-To) during operation is approximated to the current temperature difference (Ts-To) from the operation record data stored in the operation record storage unit 42. Select driving record data. As a result, the temperature difference (Ts-To) during operation deviates from the current temperature difference (Ts-To), so that the slope ΔT of the time change of room temperature Tr also changes with time of room temperature Tr in this operation. Operational record data estimated to deviate from the slope ΔT of is excluded from the selection. Then, by acquiring the slope ΔT of the time change of the room temperature Tr from the selected operation record data, the slope ΔT representing the time change of the room temperature Tr when operated with the current temperature difference (Ts-To) can be obtained. Be done. Therefore, by considering the temperature difference (Ts—To), it is possible to improve the accuracy of matching the timing at which the room temperature Tr reaches the target room temperature Ts with the air conditioning completion target time tend.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. The same parts as those in the first embodiment and the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 9, in the third embodiment, the temperature storage unit 50 during operation stoppage and the external communication unit 52 are added to the air conditioning indoor unit 34. The indoor unit operation control unit 40 acquires the room temperature Tr from the room temperature measuring unit 38 and the outside air temperature To from the outside air temperature measuring unit 18 of the air conditioning outdoor unit 14 while the air conditioner 12 is stopped. Repeat things regularly. Then, the indoor unit operation control unit 40 stores the acquired room temperature Tr and the outside air temperature To in the operating stopped temperature storage unit 50 as the operating stopped temperature data.

The external communication unit 52 is connected to the network 54 via a communication line. Various devices are connected to the network 54, and among the various devices connected to the network 54, as shown in FIG. 9, a weather forecast server 56 that provides a service for transmitting weather forecast information. It is included. The air conditioner 12 according to the third embodiment acquires weather prediction information from the weather prediction server 56 via the network 54 and the external communication unit 52. This weather forecast information includes time-series forecast values such as outside air temperature, weather, wind direction, and air volume. The external communication unit 52 is an example of a receiving unit.

Next, with reference to FIG. 10, the reserved operation control process according to the third embodiment will be described. The reserved operation control process according to the third embodiment is different from the second embodiment (FIG. 7) in that steps 104, 108, 110, 114 are added and step 120 is performed instead of step 119. ing.

In step 104 of the reserved operation control process, the reserved operation control unit 44 acquires the weather forecast information of the area around the house 10 from the weather prediction server 56 via the network 54 and the external communication unit 52. Further, in step 108, the reserved operation control unit 44 indicates how the outside air temperature To will change in the future based on the weather forecast information acquired in step 104 and the current outside air temperature To acquired in step 106. Calculate the time-series predicted value Toi (tx) of the temperature. FIG. 11 shows an example of the time-series predicted value Toi (tx) of the outside air temperature. The time interval (increment of time tx) of the time-series predicted value Toi (tx) of the outside air temperature is, for example, one hour or less.

Since the technique of predicting the time-series change of the outside air temperature from the weather prediction information and the measured value of the outside air temperature is known, detailed description of the calculation of the time-series predicted value Toi (tx) of the outside air temperature will be omitted. Further, the third embodiment is based on the premise that the time interval of the predicted value of the outside air temperature in the weather prediction information acquired from the weather prediction server 56 is larger than the time interval of the time-series predicted value Tri (tx) of the room temperature described later. It is supposed to be. However, the time interval of the predicted value of the outside air temperature in the weather forecast information is less than the time interval of the time series predicted value Tri (tx) of the room temperature, and the difference between the predicted value of the outside air temperature and the outside temperature To in the weather forecast information is predetermined. If it is less than or equal to the value, step 108 can be omitted and the predicted value of the outside air temperature in the meteorological prediction information can be used as it is as the time series predicted value Toi (tx) of the outside air temperature.

In the next step 110, the reserved operation control unit 44 acquires the operating stopped temperature data representing the transition of the room temperature Tr and the outside air temperature To during the period when the air conditioner 12 is stopped from the operating stopped temperature storage unit 50. do. FIG. 12 shows an example of the operating down temperature data acquired in step 110. Further, in step 114, the reserved operation control unit 44 determines the time-series predicted value Toi (tx) of the outside air temperature calculated in step 108, the operating stopped temperature data acquired in step 110, and the current room temperature Tr acquired in step 112. Based on, the time-series predicted value Tri (tx) of the room temperature when the air conditioner 12 is not operated is calculated.

As shown in FIG. 12, when the air conditioner 12 is stopped, the room temperature Tr changes accordingly when the outside air temperature To changes, but the change in the room temperature Tr changes with respect to the change in the outside air temperature To. As well as being "delayed", the range of change is also "compressed". The degree of "delay" and "compression" of the change of the room temperature Tr with respect to the change of the outside air temperature To changes according to the characteristics of the house 10 such as the volume and the heat insulating performance.

Therefore, in step 114, as an example, first, the magnitudes of "delay" and "compression" of the change in room temperature Tr with respect to the change in outside air temperature To are calculated from the temperature data during shutdown. For example, obtaining the magnitudes of "delay" and "compression" from a pair of data of outside temperature To on a certain date and data of room temperature Tr on the same date is required for each of a plurality of data pairs contained in the stopped operation data. And the average is calculated as the magnitude of "delay" and "compression".

Next, the amount of change in room temperature Tr for each predicted time is estimated by applying the calculated "delay" and "compression" magnitudes from the time-series predicted value Toi (tx) of the outside air temperature. Then, the current room temperature Tr is set to the initial value Tri (t0) of the time-series predicted value of the room temperature (t0 is the current time), and the current room temperature is set for each predicted time (t1, t2, ...) After the current time. By calculating the value obtained by changing the room temperature Tr by the estimated change amount of the room temperature at each predicted time, the time-series predicted value Tri (tx) of the room temperature when the air conditioner 12 is not operated can be obtained. From this time-series predicted value Tri (tx), it can be estimated that the room temperature Tr becomes the room temperature predicted value Tri (tend) at the air conditioning completion target time tend when the air conditioner 12 is not operated.

In step 120, the reserved operation control unit 44 sets the operation start time tstart for matching the timing at which the room temperature Tr reaches the target room temperature Ts with the air conditioning completion target time tend, based on the inclination ΔT acquired in step 118. The calculation is also performed in consideration of the room temperature predicted value Tri (tend) at the air conditioning completion target time tend when 12 is not operated. The operation start time tstart in step 120 can be calculated, for example, from the following equation (2).
tstart = tend－ {(Ts－Tri (tend) / ΔT}… (2)

The room temperature Tr of the house 10 changes under the influence of the outside temperature To and the like even when the air conditioner 12 is not operated, and the change of the room temperature Tr of the house 10 when the air conditioner 12 is not operated operates the air conditioner 12. In this case, the room temperature Tr of the house 10 affects the time required to reach the set target room temperature Ts.

On the other hand, in the third embodiment, the weather forecast information of the area around the house 10 is received, and the change in the room temperature of the house 10 when the air conditioner 12 is not operated is predicted based on the received weather forecast information. Calculate the time-series predicted value Tri (tx) at room temperature. Then, the operation start time tstart of the air conditioner 12 is calculated in consideration of the time-series predicted value Tri (tx) of the room temperature of the house 10 when the air conditioner 12 is not operated. As a result, the time required from the start of operation of the air conditioner 12 until the room temperature Tr of the house 10 reaches the set target room temperature Ts varies depending on the room temperature Tr of the house 10 when the air conditioner 12 is not operated. By taking this into consideration, it is possible to further improve the accuracy of matching the timing at which the room temperature Tr reaches the target room temperature Ts with the set air conditioning completion target time tend.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. Since the fourth embodiment has the same configuration as the third embodiment, the same reference numerals are given to the respective parts to omit the description of the configuration, and the operation of the fourth embodiment is different from that of the first embodiment. Explain the part. As shown in FIG. 14, the reserved operation control process according to the fourth embodiment is different from the third embodiment in that steps 122 and 124 are added.

The reserved operation process according to the fourth embodiment calculates the operation start time tstart in step 120, and then shifts to step 122. In step 122, the reserved operation control unit 44 acquires the current time t. In the next step 124, the reserved operation control unit 44 determines whether or not at least one of the following first condition and second condition is satisfied. The first condition is that the absolute value of the difference between the current outside air temperature To and the outside air temperature predicted value Toi (t) at the current time included in the time-series predicted value of the outside air temperature is equal to or more than a predetermined value. .. The second condition is that the absolute value of the difference between the current room temperature Tr and the room temperature predicted value Tri (t) at the current time included in the room temperature predicted value is equal to or more than a predetermined value.

If neither the first condition nor the second condition is satisfied in step 124, the process proceeds to step 126, and it is determined whether or not the operation start time tstart has arrived. If the determination in step 126 is denied, the process returns to step 122, and steps 122 to 126 are repeated until the determination in step 124 or 126 is affirmed. As a result, after the operation start time tstart is calculated, it is monitored whether or not at least one of the above-mentioned first condition and the second condition is satisfied until the calculated operation start time tstart arrives. When the operation start time tstart arrives without satisfying at least one of the first condition and the second condition, the determination of step 126 is affirmed and the operation of the air conditioner 12 is started.

On the other hand, for example, when the weather prediction received from the weather prediction server 56 deviates, the error of the time-series predicted value Toi (tx) of the outside air temperature and the time-series predicted value Tri (tx) of the room temperature becomes large. In this case, by satisfying at least one of the first condition and the second condition before the operation start time tstart arrives, the determination in step 124 is affirmed, the process returns to step 104, and the processing after step 104 is performed again. As a result, the weather forecast information is acquired again, and the operation start time tstart is calculated again based on the latest weather forecast. Therefore, according to the fourth embodiment, when the actual weather conditions around the house 10 differ from the weather forecast, the accuracy of matching the timing at which the room temperature Tr reaches the target room temperature Ts with the air conditioning completion target time tend is sufficient. It is possible to suppress the decrease.

In each of the above-described embodiments, the state of the air conditioner 12 before the operation of the air conditioner 12 is started in step 128 is not limited to the state in which the operation is stopped. For example, in the case of air conditioning in the entire building of a house 10, even if the house 10 is unmanned, energy-saving operation may be performed while suppressing energy consumption, and the process of starting the operation of the air conditioner 12 in step 128 is from the energy-saving operation to the target room temperature. It may be a process of shifting to normal operation targeting Ts.

Further, each of the above-described embodiments has been described on the premise that the slope ΔT of the time change of the room temperature Tr while the air conditioner 12 is operating is constant, but is limited to the slope ΔT being constant. It's not a thing. For example, when the slope ΔT changes according to the difference between the target room temperature Ts and the room temperature Tr, as an example, the temperature range of (Ts-Tr) = 0 to (Ts-Tr) is divided into a plurality of sections, and each of them is divided into a plurality of sections. The slope ΔT for each section may be acquired from the operation record data. In this case, the required time for the room temperature Tr to reach the target room temperature Ts can be calculated by obtaining the required time for each section from the acquired slope ΔT for each section and integrating the required time for each section. can.

10 House 12 Air conditioner 14 Air conditioner outdoor unit 18 Outdoor temperature measurement unit 20 Outdoor unit operation control unit 34 Air conditioner indoor unit 38 Room temperature measurement unit 40 Indoor unit operation control unit 42 Operation record storage unit (storage unit)
44 Reserved operation control unit (control unit)
50 Operation stopped Temperature storage unit 52 External communication unit (reception unit)

Claims (3)

A storage unit that stores operation record data including data representing changes in the room temperature of the building when the air conditioner installed in the building has been operated in the past.
When the air conditioning completion target time is set, the air conditioner of the air conditioner so that the room temperature of the building reaches the set target room temperature at the air conditioning completion target time based on the operation record data stored in the storage unit. The control unit that starts the operation and
Including
The operation record data includes data representing the target room temperature and the outside air temperature when the air conditioner has been operated in the past.
The control unit selects from the operation record data data representing the difference between the target room temperature and the outside temperature in the current operation and the operation record under the operating conditions within a predetermined value. An air conditioner control device that calculates the operation start time of the air conditioner based on the gradient of the time change of the room temperature acquired from the selected data . It further includes a receiver that receives weather forecast information that predicts the weather conditions around the building.
The control unit predicts a change in the room temperature of the building when the air conditioner is not operated based on the weather prediction information received by the receiver, and the room temperature of the building when the air conditioner is not operated. The air-conditioning control device according to claim 1, wherein the operation start time of the air-conditioning device is calculated in consideration of a predicted value of change . The control unit compares the predicted value of the change in the outside air temperature of the building and the predicted value of the change in the room temperature of the building when the air conditioner is not operated with the measured value until the operation of the air conditioner is started. The air conditioning control device according to claim 2, wherein when the difference between the predicted value and the measured value becomes a predetermined value or more, the operation start time is calculated again .

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