JP2018109461A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system capable of reducing energy consumption.SOLUTION: A controller 30 of an air conditioning system 10 acquires a temperature measured by each of a plurality of temperature sensors 18 as a present temperature of each of a plurality air conditioning areas 21 and controls a heat source machine 11 and a distributor 102 so as to decrease the difference between the present temperature and a target temperature of each of the plurality of air conditioning areas 21. In a normal mode, the controller 30 acquires a user's desired temperature for each of the air conditioning areas 21 as a target temperature. In an outgoing mode, the controller 30 changes the target temperature of each of the plurality of air conditioning areas 21 so as to make the air conditioning load of each of the plurality of air conditioning areas 21 lower relative to that in a normal mode, and lets the target temperature of each of the plurality of air conditioning areas 21 get closer to the user's desired temperature of each of the plurality of air conditioning areas 21 in multiple steps as a predetermined scheduled homecoming date/time approaches during an adjustment period preceding the scheduled homecoming date/time.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to an air conditioning system, and more particularly to an air conditioning system that collectively performs air conditioning of a plurality of air conditioning spaces in a building.

  Conventionally, as an air-conditioning system, a ventilation air-conditioning system to which a ventilation air-conditioning apparatus that performs ventilation air-conditioning in a plurality of zones (air-conditioned spaces) of a house (building) is applied has been proposed (Patent Document 1).

  The above-described ventilation air conditioning system includes a plurality of controllers installed one by one in each of a plurality of zones. The plurality of controllers are connected to the control device of the ventilation air conditioner. The controller has a timer mode setting unit and a timer time setting unit. Here, the control device is configured so that the controller can automatically switch between the operation mode and the holding mode.

  In the operation mode, the control device controls the supply air volume of the air conditioning function unit using the set temperature as the target temperature. In the holding mode, the control device controls the air-conditioning function unit using a value lower than the set temperature as the target temperature during the heating operation and using a value higher than the set temperature as the target temperature during the cooling operation.

  In the above-described ventilation air conditioner, since the mode is changed from the holding mode to the operation mode, the room temperature in each zone can be quickly reached the set temperature as compared with the control method that operates in the operation mode from the stop state.

  Further, as an air conditioning system, an entire building air conditioning ventilation system is known (Patent Document 2).

  In a house that employs the entire building air-conditioning ventilation system, the entire building air-conditioning ventilation system may be stopped when a consumer leaves the house on a trip or going out. The entire building air conditioning ventilation system described in Patent Document 2 stopped the air conditioner when a stop command to stop the entire building air conditioning ventilation system was generated during the air conditioning ventilation operation in order to achieve both comfort and energy saving. Thereafter, the sensible heat exchange fan is delayed and stopped.

JP-A-8-210690 Japanese Patent Laid-Open No. 11-294839

  Reduction of energy consumption is desired in the field of air conditioning systems as well as the above-described ventilation air conditioning systems and whole building air conditioning ventilation systems.

  An object of the present invention is to provide an air conditioning system capable of reducing energy consumption.

  The air conditioning system of one mode concerning the present invention is provided with a heat source machine, a distribution device, a plurality of temperature sensors, and a control device. The heat source unit generates cold air or warm air as heat energy. The distribution device distributes the thermal energy generated by the heat source unit to a plurality of conditioned spaces in a building. The plurality of temperature sensors measure the temperature of each of the plurality of conditioned spaces. The control device acquires the temperature measured by each of the plurality of temperature sensors as the current temperature of each of the plurality of conditioned spaces, and reduces the difference between the current temperature and the target temperature of each of the plurality of conditioned spaces. And controlling the heat source machine and the distributor. The control device has a normal mode and an outing mode as operation modes. In the normal mode, the control device acquires a user desired temperature for each of the plurality of air-conditioned spaces and sets it as a target temperature. In the outing mode, the control device sets the air conditioning load of each of the plurality of air conditioned spaces to be relatively smaller than that in the normal mode when the out mode is started. The target temperature is changed, and the target temperature of each of the plurality of air-conditioned spaces is set to be more than the user desired temperature of each of the plurality of air-conditioned spaces as it approaches the planned home return date and time in an adjustment period before the preset scheduled home return date and time. Move closer in stages.

  The air conditioning system of the present invention can reduce energy consumption.

FIG. 1 is a schematic configuration diagram showing an overall configuration of an air conditioning system according to an embodiment of the present invention. FIG. 2 is a block diagram showing a control device in the above-described air conditioning system. FIG. 3A is a diagram illustrating an example of a screen of the operation display device when the operation mode of the control device is the normal mode in the above air conditioning system. FIG. 3B is a diagram illustrating an example of a screen of the operation display device when the outing mode is set as the operation mode of the control device in the air conditioning system same as above. FIG. 4 is a diagram showing an example of the screen of the operation display device when the outing mode is canceled as the operation mode of the control device in the air conditioning system same as above. FIG. 5 is a graph schematically showing temporal changes in the temperature of the air-conditioned space when the operation mode of the control device is the outing mode in the above-described air conditioning system. FIG. 6 is a graph schematically showing temporal changes in the temperature of the air-conditioned space when the operation mode of the control device is the outing mode in the air conditioning system of the comparative example.

  The embodiment described below is only one of various embodiments of the present invention. The following embodiment can be variously modified according to the design or the like as long as the object of the present invention can be achieved.

(Embodiment)
Below, the air-conditioning system 10 of this embodiment is demonstrated based on FIGS. The air conditioning system 10 is assumed to be installed in a building 20. In the embodiment described below, a detached house is assumed as the building 20, and a whole building air conditioning system is assumed as the air conditioning system 10. The entire building air conditioning system is configured to supply heat energy (cold air or warm air) generated by the heat source device 11 to almost the entire building 20. The entire building air conditioning system is configured to perform air conditioning and ventilation.

  An air conditioning system 10 illustrated in FIG. 1 is installed in a building 20. The building 20 includes a plurality of (for example, nine) conditioned spaces 21 inside thereof. The air-conditioned space 21 is a space to be air-conditioned. The plurality of air-conditioned spaces 21 correspond one-to-one to the plurality of sections 23 of the building 20, for example. The section 23 is, for example, a room (living room, bedroom, etc.), kitchen, entrance, hallway, and the like.

  The air conditioning system 10 includes a heat source device 11, an air filter 12, a plurality of (for example, two) transfer fans 13, a plurality of (for example, ten) dampers 14, and a plurality of (for example, ten) outlets. 15. The heat source device 11, the air filter 12, and the two transport fans 13 are accommodated in a single casing 101 installed in the building 20 and are unitized.

  In addition, the air conditioning system 10 includes an air supply duct 16 that sends out air from the heat source unit 11 and an outside air duct 171 that introduces outside air (air) into the heat source unit 11. Furthermore, the air conditioning system 10 includes a control device 30 and a plurality of (for example, nine) temperature sensors 18.

  The heat source unit 11 is a heat pump type air conditioner including one indoor unit 111 and one outdoor unit 112. In the air conditioning system 10, air from the indoor unit 111 is supplied to the plurality of conditioned spaces 21 through the air supply duct 16. In addition, the air taken in by the indoor unit 111 is the outdoor air taken in from the underfloor 22 of the building 20 through the outside air duct 171 and the indoor that reaches the air inlet of the indoor unit 111 from each of the plurality of air-conditioned spaces 21 through the inside of the building 20. With air. In FIG. 1, a broken line 172 schematically shows the flow of air reaching each of the plurality of air-conditioned spaces 21 through a gap (for example, a slit in a room door) to the suction port of the indoor unit 111. The outside air duct 171 is connected to a ventilation fan 19 that takes in air under the floor 22. The air conditioning system 10 includes a filter (hereinafter referred to as “pre-filter”) disposed at least at one place in a path including the ventilation fan 19, the outside air duct 171, and the indoor unit 111. Thereby, in the air conditioning system 10, relatively large dust, insects and the like can be collected by the prefilter, and it is possible to suppress the relatively large dust, insects and the like from reaching the air filter 12. Thereby, in the air conditioning system 10, clogging of the air filter 12 is suppressed.

  The indoor unit 111 has a built-in filter. It is preferable that the filter of the indoor unit 111 is configured to collect dust or the like that is relatively smaller than the pre-filter 17. In the air conditioning system 10, by providing the pre-filter 17, the frequency of cleaning the filter of the indoor unit 111 can be reduced. Air from the indoor unit 111 is sent to the air supply duct 16 through the air filter 12. The air filter 12 has a filter performance capable of removing (capturing) particles having a relatively small particle size than the filter of the indoor unit 111. The air filter 12 is preferably a HEPA filter (HEPA: High Efficiency Particulate Air), for example. In the air conditioning system 10, if the air filter 12 is a HEPA filter, for example, particulate matter such as PM2.5 can be collected. PM2.5 is a fine particle that passes through a sizing device having a particle diameter of 2.5 μm and a collection efficiency of 50%.

  The heat source unit 11 performs a cooling operation in which cool air is sent out from the indoor unit 111 in summer, and performs a heating operation in which warm air is sent out from the indoor unit 111 in winter. Switching between the cooling operation and the heating operation of the heat source unit 11 is performed in an intermediate period such as spring or autumn. The difference between the cooling operation and the heating operation is whether the set temperature of the heat source device 11 is used as an upper limit value or a lower limit value. The heat source unit 11 operates so that the temperature of the cool air sent out from the indoor unit 111 during the cooling operation does not exceed the set temperature of the heat source unit 11 that is the upper limit value, and the warm air sent out from the indoor unit 111 during the heating operation Is operated so as not to fall below the set temperature of the heat source unit 11 which is the lower limit value. In the following description, the amount of heat at the time of heating operation means the amount of heat of warm air, and the amount of heat at the time of cooling operation means the amount of heat of cold air.

  The damper 14 is, for example, a VAV unit (VAV: Variable Air Volume). In the air conditioning system 10, the dampers 14 and the air outlets 15 have a one-to-one correspondence, so the number of dampers 14 and the number of air outlets 15 are the same (for example, 10). The number of dampers 14 and the number of outlets 15 are appropriately determined according to the capacity of the heat source unit 11, the configuration and scale of the building 20, and the like.

  The air conditioning system 10 includes the two transport fans 13, the air supply duct 16, and the ten dampers 14 described above in order to distribute the heat energy generated by the heat source device 11 to the ten air outlets 15. Yes. In the air conditioning system 10, the two transport fans 13, the air supply duct 16, and the ten dampers 14 constitute a distribution device 102 that distributes the thermal energy generated by the heat source unit 11 to the ten outlets 15. ing. In the air conditioning system 10, the proportion of the heat energy generated by the heat source device 11 to be distributed to the 10 outlets 15 depends on the air volume of each of the two transport fans 13 and the opening of each of the 10 dampers 14. Determined. Here, in the air conditioning system 10, the control device 30 controls the distribution device 102. Thereby, in the air conditioning system 10, the ratio which distributes the thermal energy produced | generated by the heat-source equipment 11 to the ten outlets 15 is determined.

  In the air conditioning system 10, the air outlet 15 and the temperature sensor 18 are disposed in each of the plurality of air conditioned spaces 21. Here, in the air conditioning system 10, air is supplied to each of the plurality of conditioned spaces 21 from the air outlet 15. In the air conditioning system 10, one temperature sensor 18 is disposed in each of the plurality of air conditioned spaces 21. The air conditioning system 10 measures the temperature of each of the plurality of conditioned spaces 21 with the temperature sensor 18. The amount of heat supplied to each of the plurality of conditioned spaces 21 per unit time is determined by the temperature and flow rate of the air supplied from the outlet 15 to the conditioned space 21.

  The position of the temperature sensor 18 is determined so that the air blown out from the outlet 15 does not directly hit the temperature sensor 18. The position of the temperature sensor 18 is a wall surface surrounding the air-conditioned space 21 in the building 20, and is determined to be, for example, 110 cm or more and 120 cm or less from the floor. The position of the temperature sensor 18 can be changed as appropriate.

  The control device 30 acquires the temperature measured by each of the nine temperature sensors 18 as the current temperature of each of the nine air-conditioned spaces 21, and reduces the difference between the current temperature and the target temperature of each of the plurality of air-conditioned spaces 21. In addition, the heat source device 11 and the distribution device 102 are controlled. Thereby, the control apparatus 30 adjusts the distribution amount of the calorie | heat amount per unit time to the ten blower outlets 15. FIG. The temperature sensor 18 is desirably housed in a case having a vent so as to measure temperature without being affected by radiant heat.

  In the air conditioning system 10, the air supply duct 16 is branched into two branch ducts 161. Thereby, in the air conditioning system 10, the air sent from the indoor unit 111 and passed through the air filter 12 is introduced into each of the two branch ducts 161. In the air conditioning system 10, the transport fan 13 is disposed on the upstream side of each of the two branch ducts 161. In FIG. 1, a broken line in the housing 101 schematically shows a path through which air flows. Each of the two transport fans 13 accelerates air from the indoor unit 111. In the air conditioning system 10, each of the two branch ducts 161 is further branched into a plurality of (five systems) terminal ducts 162. That is, air from the indoor unit 111 is introduced into the ten end ducts 162. The number of end ducts 162 branched from each of the two branch ducts 161 is appropriately set in the range of 5 to 7, and may be different from each other.

  In the air conditioning system 10, the damper 14 is disposed in each of the ten end ducts 162. In the air conditioning system 10, the control device 30 controls each damper 14 to adjust the opening degree of each damper 14. The damper 14 changes the flow rate of the air passing through the end duct 162 by adjusting the opening degree thereof. An outlet 15 is connected to the end of the end duct 162. Therefore, the air from the indoor unit 111 is sent to the damper 14 through the transport fan 13, and after the flow rate is adjusted by the damper 14, the air is blown out to the air-conditioned space 21 through the air outlet 15.

  The air conditioning system 10 constantly ventilates the building 20. Therefore, the air conditioning system 10 always operates each conveyance fan 13. However, in the air conditioning system 10, the conveyance fan 13 may be stopped as necessary for maintenance or the like.

  Below, the control apparatus 30 is explained in full detail. As shown in FIG. 2, the control device 30 includes a processing unit 31 and a control unit 32. The processing unit 31 determines the amount of heat distribution to be supplied to each of the plurality of air-conditioned spaces 21. The control unit 32 controls the heat source device 11, each conveyance fan 13, and each damper 14. In addition, the control device 30 includes an interface unit 33 for inputting and outputting information to and from the operation display device 40.

  The operation display device 40 includes a touch panel including a display device and a touch pad, and functions as a user interface (GUI: Graphic User Interface). That is, the control device 30 outputs information to the display device of the operation display device 40 and receives information input from the touch pad of the operation display device 40. Various screens are displayed on the operation display device 40 as necessary. The operation display device 40 may not be dedicated but may be a smartphone, a tablet computer, a personal computer, or the like. In the air conditioning system 10, the operation display device 40 constitutes an operation unit that can be operated by the user. Further, the air conditioning system 10 may include a display device and an operation device separately instead of the operation display device 40. In this case, the operating device constitutes an operating unit that can be operated by the user.

  The air conditioning system 10 is configured such that a contractor or the like can associate the damper 14 and the temperature sensor 18 with each of the plurality of air conditioned spaces 21 using the operation display device 40. In the air conditioning system 10, one different temperature sensor 18 is associated with each of the plurality of conditioned spaces 21. The number of dampers 14 associated with each of the plurality of conditioned spaces 21 is not limited to one and may be a plurality. The number of dampers 14 associated with the air-conditioned space 21 is appropriately determined according to the air-conditioning load of the air-conditioned space 21 determined by the size of the section 23 and the like. For example, if the air-conditioned space 21 is an 8 tatami room, the number of dampers 14 is one. If the air-conditioned space 21 is a 16 tatami room (for example, a living room), the number of dampers 14 is two. is there.

  In the air conditioning system 10, when the correspondence relationship between the one or more dampers 14 and the temperature sensor 18 is determined, the air outlet 15 and the temperature sensor 18 corresponding to the damper 14 on a one-to-one basis are associated with each other. Thereby, in the air conditioning system 10, the air conditioned space 21 in which the temperature is measured by each of the plurality of temperature sensors 18 is specified.

  In the air conditioning system 10, a preset room name can be associated with each of the plurality of air conditioned spaces 21 by operating the operation display device 40 by a user or the like. Moreover, in the air conditioning system 10, it is possible to instruct | indicate the user desired temperature of each of the some air conditioned space 21 by operation of the operation display apparatus 40 by a user etc.

  The control device 30 stores the user desired temperature instructed for each of the plurality of conditioned spaces 21 by the operation of the operation display device 40 by the user or the like in the storage unit 34.

  The processing unit 31 of the control device 30 includes an acquisition unit 310 that acquires the current temperature measured by each of the plurality of temperature sensors 18 by communicating with each of the plurality of temperature sensors 18. The acquisition unit 310 is configured to perform wired communication with each of the plurality of temperature sensors 18 and periodically inquire the plurality of temperature sensors 18 about the current temperature. That is, the acquisition unit 310 acquires the current temperature from each temperature sensor 18 by polling the plurality of temperature sensors 18. The period at which the acquisition unit 310 inquires each of the plurality of temperature sensors 18 about the current temperature is set, for example, in the range of 1 minute to 15 minutes, preferably in the range of 5 minutes to 10 minutes. This period may be appropriately determined depending on, for example, the speed at which the temperature of the air-conditioned space 21 changes, the measurement accuracy of the temperature sensor 18, and the like.

  The current temperature acquired by the acquisition unit 310 from the temperature sensor 18 is the temperature measured by the temperature sensor 18 when the acquisition unit 310 makes an inquiry to the temperature sensor 18 (the temperature of the air-conditioned space 21). However, the current temperature acquired by the acquisition unit 310 from the temperature sensor 18 may be an average value of temperatures in a predetermined period set near the time when the temperature sensor 18 receives an inquiry from the acquisition unit 310. This predetermined period is either before or after the time when the temperature sensor 18 receives an inquiry from the acquisition unit 310, or straddles the time. This predetermined period is set in a range of, for example, 10 seconds to 3 minutes, preferably in a range of 30 seconds to 1 minute.

  In addition to the acquisition unit 310, the processing unit 31 of the control device 30 includes a first calculation unit 311, a second calculation unit 312, and a determination unit 313. Hereinafter, for convenience of explanation, a positive integer value i representing the order is associated with a time series of the current temperature acquired by the acquisition unit 310, and identification information for distinguishing the plurality of air-conditioned spaces 21 from each other is represented by j. The identification information j is represented by a positive integer value, for example.

  The first calculation unit 311 inputs the user desired temperature stored in the storage unit 34 and the current temperature acquired by the acquisition unit 310 for each of the plurality of air-conditioned spaces 21 and inputs the temperature difference between the current temperature and the target temperature. Calculate Here, the 1st calculation part 311 calculates the target temperature used for the calculation in the control apparatus 30, a determination, etc. from user desired temperature. The target temperature may be the same as or different from the user desired temperature. The user desired temperature is a temperature instructed for each of the plurality of conditioned spaces 21 by the operation of the operation display device 40 by the user or the like. The control device 30 has a normal mode and an outing mode as operation modes. In the normal mode, the user desired temperature for each of the plurality of conditioned spaces 21 is acquired from the storage unit 34 and set as a target temperature. . First, the operation when the operation mode of the control device 30 is the normal mode will be described, and then the operation when the operation mode is the outing mode will be described. For the air-conditioned space 21 whose identification information is j, when the current temperature acquired by the acquisition unit 310 is represented by θj1 (i) and the target temperature is represented by θj2, the first calculation unit 311 calculates the temperature difference Δθj (i) It calculates | requires by calculation of (DELTA) (theta) j (i) = (theta) j1 (i)-(theta) j2, and outputs with a positive / negative sign. The first calculation unit 311 obtains a temperature difference Δθj (i) for each of the plurality of conditioned spaces 21. The first calculation unit 311 temporarily stores the temperature difference Δθj (i) obtained by the calculation in the storage unit 34 in association with the identification information j of the air-conditioned space 21. The storage unit 34 stores at least two temperature differences Δθj (i) and Δθj (i−1) for each air-conditioned space 21. The two temperature differences Δθj (i) and Δθj (i−1) stored in the storage unit 34 are updated when the acquisition unit 310 acquires the current temperature θj1 (i). That is, the storage unit 34 stores the latest temperature difference Δθj (i) and the previous temperature difference Δθj (i−1). The latest temperature difference Δθj (i) is a temperature difference obtained in a period from when the acquisition unit 310 acquires the current temperature θj1 (i) until the next current temperature θj1 (i + 1) is acquired. The previous temperature difference Δθj (i−1) is a period after the acquisition unit 310 acquires the previous current temperature θj1 (i−1) before the acquisition unit 310 acquires the current temperature θj1 (i). This is the temperature difference obtained by

  The second calculator 312 calculates the temperature change Vj (i) every time the acquisition unit 310 acquires the current temperature θj1 (i). The temperature change Vj (i) is a difference between the current temperatures θj1 (i) and θj1 (i−1) for two times acquired by the acquisition unit 310. That is, the second calculation unit 312 obtains the temperature change Vj (i) per unit time by calculation of Vj (i) = θj1 (i−1) −θj1 (i). A temperature change Vj (i) represents a temperature change with respect to time. Since the first calculation unit 311 obtains the temperature difference Δθj (i), the second calculation unit 312 obtains the temperature change Vj (i) by calculating the current temperatures θj1 (i) and θj1 (i−1). Instead of the difference, a difference between the two temperature differences Δθj (i) and Δθj (i−1) may be obtained. If the target temperature θj2 does not change during the period in which the acquisition unit 310 acquires the current temperatures θj1 (i) and θj1 (i-1) for two times, the current temperatures θj1 (i) and θj1 (i-1) for two times are not changed. And the difference between two temperature differences θj1 (i) and θj1 (i−1) are the same value.

  The determination unit 313 is based on the i-th temperature difference Δθj (i) obtained by the first calculation unit 311 and the temperature change Vj (i) obtained by the second calculation unit 312 for each of the plurality of air-conditioned spaces 21. Thus, a distribution amount of heat supplied from the heat source unit 11 to each of the plurality of air-conditioned spaces 21 is determined. The amount of heat distribution is determined by the opening degree of each of the plurality of dampers 14, the air volume of each of the two transport fans 13, and the amount of heat generated by the heat source unit 11 per unit time. That is, the determination unit 313 determines the opening degree of each of the plurality of dampers 14 based on the temperature difference Δθj (i) and the temperature change Vj (i) of each of the plurality of conditioned spaces 21, and then determines the two transport fans 13. And the amount of heat generated by the heat source unit 11 per unit time.

  A specific operation example of the determination unit 313 will be described below. In the following, after describing the function of determining the opening degree of the damper 14 for one air-conditioned space 21 with respect to the determining unit 313, the two transport fans 13 are based on the opening degree of all the dampers 14 arranged in the building 20. The function of determining the amount of air and the amount of heat generated per unit time in the heat source unit 11 will be described.

  The determination unit 313 includes a first control table as shown in Table 1 in which the temperature difference in the air-conditioned space 21 and the opening degree of the damper 14 are associated with each other during the cooling operation of the air-conditioning system 10. Table 1 shows a first control table during a period in which the air conditioning system 10 is in the cooling operation in the assumed standard heat load air-conditioned space 21.

  In the first control table, the temperature difference Δθj is divided into a plurality of sections, and the opening degree of the damper 14 corresponds to each of the plurality of sections.

  In the air conditioning system 10, that the current temperature θj1 (i) of the conditioned space 21 measured by the temperature sensor 18 exceeds the target temperature θj2 in the cooling operation indicates that the conditioned space 21 is insufficiently cooled. ing. In addition, the fact that the current temperature θj1 (i) of the air-conditioned space 21 matches the target temperature θj2 indicates that the air-conditioned space 21 is fully air-conditioned. In addition, the current temperature θj1 (i) of the air-conditioned space 21 being lower than the target temperature θj2 indicates that the air-conditioned space 21 is excessively cooled.

  In the air conditioning system 10, when the air-conditioned space 21 is insufficiently cooled, the current temperature θj1 (i) exceeds the target temperature θj2, and the greater the difference between the current temperature θj1 (i) and the target temperature θj2, the more insufficient the cooling is. The degree is large.

  The first calculator 311 obtains a temperature difference Δθj (i) obtained by subtracting the target temperature θj2 from the current temperature θj1 (i). In the air conditioning system 10, if the temperature difference Δθj (i) obtained by the first calculation unit 311 with respect to the air conditioned space 21 is positive, the air conditioned space 21 is insufficiently cooled. In the air conditioning system 10, the greater the temperature difference Δθj (i) obtained by the first calculator 311 with respect to the conditioned space 21, the greater the degree of cooling shortage.

  As an example, the first control table defines five different sections for the temperature difference Δθj (i). In the first control table, a relatively large opening corresponds to the section where the temperature difference Δθj (i) is positive and the temperature difference Δθj (i) is relatively large. The first control table is defined so that the opening degree of the damper 14 becomes a maximum value (for example, 100%) when the temperature difference Δθj (i) is 2 ° C. or more.

  In the first control table, even if the temperature difference Δθj (i) is negative, the amount of heat that does not increase the temperature of the conditioned space 21 until the current temperature θj1 (i) falls by 1 ° C. from the target temperature θj2 The opening degree of the damper 14 is set to a predetermined value (for example, 25%) so as to be supplied to the space 21. In the first control table, when the current temperature θj1 (i) falls below 1 ° C. with respect to the target temperature θj2, the opening degree of the damper 14 is set to a minimum value (for example, 5%). It has been. The minimum value of the opening degree of the damper 14 is not limited to 5%. For example, if there is a system that constantly ventilates in a system separate from the air conditioning system 10, the minimum value of the opening degree of the damper 14 may be 0%.

  By the way, the temperature difference Δθj (i) can be restated as “insufficient”. The degree of deficiency noted in Table 1 is represented by five levels of integer values from “−1” to “3” corresponding to the temperature difference Δθj (i). In Table 1, when the deficiency is 0, the air conditioning is satisfied, when the deficiency is positive, the air conditioning is deficient, and when the deficiency is negative, the air conditioning is excessive. In Table 1, the lack of air conditioning is represented by an integer value in three stages in the degree of insufficiency, and the greater the numerical value, the greater the degree of air conditioning shortage.

  The determination unit 313 uses the second control table as shown in Table 2 during the period in which the air conditioning system 10 is in the heating operation. Since the target temperature θj2 is the lower limit value during the heating operation, the second control table has more sections where the temperature difference Δθj (i) is negative than there are positive sections. Further, the degree of deficiency is associated with the temperature difference interval so that the temperature difference Δθj (i) is negative and the larger the absolute value, the larger the value.

  The determination unit 313 receives the temperature difference Δθj (i) from the first calculation unit 311 every time the acquisition unit 310 acquires the current temperature θj1 (i), and performs second control on the section to which the temperature difference Δθj (i) belongs. Ask from the table. The determination unit 313 determines the opening degree of the damper 14 according to the section to which the temperature difference Δθj (i) belongs. The deficiencies in Tables 1 and 2 are not essential.

  In the air conditioning system 10, the determination unit 313 is configured so that each of the first control table in Table 1 and the second control table in Table 2 can be updated sequentially.

  In each of Tables 1 and 2, the temperature difference Δθj (i) is a value obtained by subtracting the target temperature θj2 from the current temperature θj1 (i). For this reason, in the 1st control table shown in Table 1, and the 2nd control table shown in Table 2, the sign of temperature difference (DELTA) thetaj (i) showing the state where air conditioning is insufficient is reversed. In the following description, the case where the air conditioning system 10 is in the cooling operation will be described as an example. Therefore, when the air conditioning system 10 is in the heating operation, it is necessary to reverse the sign of the temperature difference Δθj (i) and to read it again.

  In the air conditioning system 10, when the air conditioning load of the air conditioning space 21 is relatively large with respect to the air conditioning loads of the other air conditioning spaces 21 and the air conditioning is insufficient, the unit is supplied to the air conditioning space 21 having a relatively large air conditioning load. Increasing the amount of heat per hour shortens the time until the current temperature θj1 (i) of the conditioned space 21 with a relatively large air conditioning load reaches the target temperature θj2. Moreover, when the air conditioning load of the air-conditioned space 21 is smaller than the air-conditioning load of other air-conditioned spaces 21, there is a possibility that the current temperature θj1 (i) exceeds the target temperature θj2 and the air conditioning becomes excessive. Further, when the current temperature θj1 (i) has reached the target temperature θj2, and the amount of heat supplied to the air-conditioned space 21 per unit time does not match the air-conditioning load of the air-conditioned space 21, the current air-conditioned space 21 There is a possibility that the variation of the temperature θj1 (i) becomes large. On the other hand, in the air conditioning system 10, by reducing the amount of heat per unit time supplied to the air conditioned space 21 with a relatively small air conditioning load, the air conditioning space 21 with a relatively small air conditioning load becomes excessively air conditioned. Or the fluctuation of the current temperature θj1 (i) when the current temperature θj1 (i) reaches the target temperature θj2.

  In the air conditioning system 10, the determining unit 313 determines the opening degree of the damper 14 not only based on the temperature difference Δθj (i) but also using the temperature change Vj (i) with respect to time. Here, the determination unit 313 includes a correction unit 315 that sequentially updates the first control table and the second control table. When the air conditioning is insufficient and the temperature change Vj (i) with respect to time is relatively small, the correction unit 315 updates the opening degree of the damper 14 so that the temperature change Vj (i) with respect to time becomes relatively large. To do. Further, the correction unit 315 opens the damper 14 so that the temperature change Vj (i) is relatively small when the air conditioning is sufficient or excessive and the temperature change Vj (i) with respect to time is relatively large. Update. Here, the magnitude of the temperature change Vj (i) with respect to time represents the speed of the temperature change in the conditioned space 21. In other words, the temperature change Vj (i) with respect to time can be used as an index of the magnitude of the air conditioning load of the air conditioned space 21. In the air-conditioned space 21, the larger the temperature change Vj (i) with respect to time, the smaller the air-conditioning load. The smaller the temperature change Vj (i) with respect to time, the greater the air-conditioning load. Here, the air conditioning load varies depending on the attributes (heat insulation characteristics, volume, room orientation, etc.) of the air conditioned space 21, the target temperature, and the like. In the air-conditioned space 21, for example, the air-conditioning load tends to increase as the volume of the air-conditioned space 21 increases, and the air-conditioning load tends to decrease as the volume of the air-conditioned space decreases. In the air-conditioned space 21, the air conditioning load tends to be larger as the target temperature during the cooling operation of the air conditioning system 10 is lower, and the air conditioning load is smaller as the target temperature is higher. In the air-conditioned space 21, the air conditioning load tends to be larger as the target temperature during the heating operation of the air conditioning system 10 is higher, and the air conditioning load is smaller as the target temperature is lower.

  Whether or not to update the opening degree of the damper 14 in the first control table or the opening degree of the damper 14 in the second control table depends on the temperature difference Δθj (i) or Δθj (i−1) and the temperature change Vj with respect to time. It is determined in combination with (i). The determination unit 313 evaluates whether the air conditioning is insufficient by comparing the temperature difference Δθj (i) or Δθj (i−1) with the first threshold value. Further, the determination unit 313 evaluates the amount of heat supplied per unit time from the amount of temperature change per unit time of the air-conditioned space 21 by comparing the temperature change Vj (i) with respect to time with the second threshold value.

  The determination unit 313 also defines a third threshold value to be compared with the temperature difference Δθj (i) and a fourth threshold value to be compared with the temperature change Vj (i). The third threshold value is used to evaluate whether the air conditioning is sufficient or excessive by being compared with the temperature difference Δθj (i). Similar to the second threshold, the fourth threshold is used to evaluate the amount of heat supplied per unit time from the amount of temperature change per unit time of the conditioned space 21. However, the above-described second threshold value is used to determine the amount of heat supplied per unit time from the amount of temperature change per unit time in the air-conditioned space 21 where air conditioning is insufficient. On the other hand, the fourth threshold value is used to determine the amount of heat supplied per unit time from the amount of temperature change per unit time in the air-conditioned space 21 where air conditioning is excessive. In the following description, the first threshold is TH1, the second threshold is TH2, the third threshold is TH3, and the fourth threshold is TH4.

  When the condition of Δθj (i)> TH1 or Δθj (i−1)> TH1 and Vj (i) <TH2 is satisfied, the correction unit 315 opens the damper 14 so that the temperature change Vj (i) increases. Correct. The condition here indicates that air conditioning is insufficient because the temperature difference Δθj (i) is greater than the first threshold TH1, and the air conditioning load of the conditioned space 21 because the temperature change Vj (i) is less than the second threshold TH2. This means that the amount of heat supplied per unit time is insufficient. That is, the air-conditioned space 21 in which this condition is satisfied is evaluated as being insufficient in air-conditioning by comparing the temperature difference Δθj (i) with the first threshold value TH1, and the temperature change Vj (i) is smaller than the second threshold value TH2. It is evaluated. Therefore, the correction unit 315 corrects and updates the first control table so as to increase the opening degree of the damper 14 corresponding to the air-conditioned space 21. The air conditioning system 10 performs such correction in the control device 30 so that the current temperature θj (i) of the air conditioned space 21 with a relatively large air conditioning load is equal to the time of the air conditioned space 21 with a relatively small air conditioning load. This makes it possible to approach the target temperature θj2.

  Further, the correction unit 315 corrects the opening degree of the damper 14 in the first control table so that the temperature change Vj (i) decreases when the condition Δθj (i) <TH3 and Vj (i)> TH4 is satisfied. And update. The condition here is that the temperature difference Δθj (i) is smaller than the third threshold value TH3, which means that the air conditioning is sufficient or excessive, and the temperature change Vj (i) is larger than the fourth threshold value TH4, so This means that the air conditioning load is small and the amount of heat supplied per unit time is excessive. That is, the air-conditioned space 21 in which this condition is satisfied is evaluated that the air-conditioning is sufficient or excessive by comparing the temperature difference Δθj (i) with the third threshold TH3, and the temperature change Vj (i) is the fourth threshold TH4. Rated to be greater. Therefore, the correction unit 315 corrects and updates the first control table so as to reduce the opening degree of the damper 14 corresponding to the air-conditioned space 21. The air conditioning system 10 can suppress excessive air conditioning to the air conditioned space 21 with a relatively small air conditioning load by performing such correction in the control device 30.

  Since the first threshold value TH1 is used for evaluating that air conditioning is insufficient, the first threshold value TH1 is a relatively large value, and is set to 1 ° C., for example. As described above, the second threshold value TH2 is used to evaluate the amount of heat supplied per unit time from the amount of temperature change per unit time of the conditioned space 21. For example, the second threshold value TH2 is selected from the range of 0 ° C. or more and 1 ° C. or less, desirably selected from the range of 0.2 ° C. or more and 0.5 ° C. or less, and set to 0.3 ° C. as an example. On the other hand, since the third threshold value TH3 is used for evaluating whether the air conditioning is sufficient or excessive, the third threshold value TH3 is a relatively small value, and is set to 0.5 ° C., for example. The fourth threshold value TH4 is used for evaluating that the amount of heat supplied per unit time is large. For example, the fourth threshold value TH4 is from 0 ° C. to 1.0 ° C., preferably from 0.3 ° C. to 0.7 ° C. Selected and set to 0.5 ° C. as an example.

  A method for correcting the first control table will be specifically described below. When correcting so that the opening degree of the damper 14 in the first control table is relatively increased, the correction unit 315 displays the first control table before correction (for example, the first control table shown in Table 1) as a table. The first control table corrected as shown in 3 is updated.

  Here, since it is assumed that the air conditioning system 10 is in cooling operation, the first control table shown in Table 3 is created by correcting the first control table shown in Table 1. That is, when the temperature difference Δθj (i) is 1 ° C. or more and less than 2 ° C., the opening degree of the damper 14 is changed from 70% to 100%, and when the temperature difference Δθj (i) is 0 ° C. or more and less than 1 ° C. The opening of 14 is changed from 40% to 70%. In the first control table of Table 3, when the temperature difference Δθj (i) is not less than −1 ° C. and less than 0 ° C., the opening degree of the damper 14 is 25% to 40% with respect to the first control table of Table 1. Has been changed.

  When the temperature difference Δθj (i) is 2 ° C. or more, the opening degree of the damper 14 is maintained at 100% also in the first control table of Table 3. When the temperature difference Δθj (i) is less than −1 ° C., the opening degree of the damper 14 is also maintained at 5% in the first control table of Table 3. However, if the building 20 has a system that is different from the air conditioning system 10 and is always ventilated, the opening degree of the damper 14 may be 0% when the temperature difference Δθj (i) is less than −1 ° C.

  On the other hand, when the correction unit 315 corrects the opening degree of the damper 14 in the first control table to be relatively small, the correction unit 315 uses the first control table before correction (for example, the first control table shown in Table 1). The first control table corrected as shown in Table 4 is updated.

  The first control table shown in Table 4 is corrected with respect to the first control table shown in Table 1 so as to make the opening degree of the damper 14 relatively small. That is, when the temperature difference Δθj (i) is 1 ° C. or more and less than 2 ° C., the opening degree of the damper 14 is changed from 70% to 40%, and when the temperature difference Δθj (i) is 0 ° C. or more and less than 1 ° C. The opening of 14 is changed from 40% to 25%. Further, in the first control table of Table 4, when the temperature difference Δθj (i) is not less than −1 ° C. and less than 0 ° C., the opening degree of the damper 14 is 25% to 5% with respect to the first control table of Table 1. Has been changed.

  Here, when the temperature difference Δθj (i) is less than −1 ° C., the opening degree of the damper 14 is set to 5% as in the first control table shown in Table 3 in order to perform continuous ventilation in the air conditioning system 10. Maintained. However, if the building 20 has a separate ventilation system and a continuous ventilation system, the opening degree of the damper 14 may be 0%. When the temperature difference Δθj (i) is 2 ° C. or higher, the opening degree of the damper 14 is maintained at 100%.

  Tables 3 and 4 show the corrected first control table when the air conditioning system 10 is in the cooling operation, but when the air conditioning system 10 is in the heating operation, the correction unit 315 is shown in Table 2. The second control table is corrected. The opening degree of the damper 14 is corrected in the same way as in Tables 3 and 4 with respect to Table 1. Moreover, although the air conditioning system 10 mentioned above uses the 1st control table which matched temperature difference (DELTA) (theta) j (i) and the opening degree of the damper 14, when it replaces with temperature difference (DELTA) (theta) j (i) and uses a deficiency degree. Tables 3 and 4 can also be used when the air conditioning system 10 is in the heating operation.

  In the above example, the sign of the temperature difference Δθj (i) is inverted depending on whether the air conditioning system 10 is in the cooling operation or the heating operation. On the other hand, when the first calculation unit 311 replaces two terms of the current temperature θj (i) and the target temperature θj2 when the temperature difference Δθj (i) is determined according to the cooling operation or the heating operation, Regardless of the operation or heating operation, it is possible to match the positive and negative signs of the temperature difference Δθj (i) with respect to the degree of air conditioning shortage. That is, the first calculation unit 311 employs a value obtained by subtracting the target temperature θj2 from the current temperature θj (i) during the cooling operation of the air conditioning system 10 as the temperature difference Δθj (i), and during the heating operation. A value obtained by subtracting the current temperature θj (i) from the target temperature θj2 may be adopted as the temperature difference Δθj (i). In this case, the determination unit 313 does not need to use different control tables for the cooling operation and the heating operation, and can share the first control table shown in Table 1 for both the cooling operation and the heating operation.

  By the way, in the air conditioning system 10, the amount of heat supplied per unit time to each of the plurality of air conditioned spaces 21 is the amount of heat generated by the heat source unit 11 per unit time, the amount of air flow of each of the two transport fans 13, and 10 pieces of air. It is determined by the opening degree of each damper 14. Further, when the air volume of each of the two transport fans 13 and the opening degree of each of the ten dampers 14 are determined, the volume of air supplied to each of the nine air-conditioned spaces 21 is determined. That is, according to the ratio of the volume of air supplied to each of the nine air-conditioned spaces 21 per unit time, the heat energy generated by the heat source unit 11 per unit time under ideal conditions with no heat loss, The nine air-conditioned spaces 21 are distributed. And the amount of the heat energy which the heat source machine 11 produces | generates per unit time is equal to the sum total of the heat energy supplied to each of all the air-conditioning spaces 21 in the building 20 on the ideal conditions with no heat loss.

  In the above example, when the acquisition unit 310 acquires the current temperature of each of the plurality of conditioned spaces 21, the determination unit 313 obtains the opening degree of the damper 14 corresponding to each of the plurality of conditioned spaces 21. The determining unit 313 determines the amount of heat per unit time distributed to each of the plurality of air-conditioned spaces 21 and then determines the air volume of each of the two transport fans 13 after determining the opening degree of the damper 14. The air volume of the transport fan 13 is selected by selecting the output condition of the transport fan 13 from notches (for example, the first notch, the second notch, the third notch and the fourth notch) for output adjustment (for air volume adjustment). I can decide. The conveyance fan 13 has an increasing air volume in the order of the first notch (fine), the second notch (weak), the third notch (medium), and the fourth notch (strong). In the air conditioning system 10, the determination unit 313 determines the air volume of the transport fan 13 by selecting the operation condition of the transport fan 13 from a plurality of notches. In the air conditioning system 10, the five dampers 14 are associated with one transport fan 13, so the determination unit 313 sets the air volume of the transport fan 13 to a plurality (for example, five) on the downstream side of the transport fan 13. ) Of the damper 14).

  In order to determine the air volume of the transport fan 13 based on the opening degree of the damper 14, the determination unit 313 includes a score table as shown in Table 5 in which a score is associated with the opening degree of the damper 14, and the notch of the transport fan 13 as a score. And a determination table as shown in Table 6 in which are associated with each other.

  The determination unit 313 obtains a score corresponding to the opening degree of each of the ten dampers 14 by referring to the score table as shown in Table 5, and refers to the determination table as shown in Table 6 to obtain two points. The air volume of each conveyance fan 13 is determined. Specifically, the determination unit 313 determines the air volume of the transport fan 13 by selecting the notch of the transport fan 13 based on the scores of the five dampers 14 corresponding to one transport fan 13.

  The score in the determination table shown in Table 6 is not the total score of the scores of the five dampers 14 corresponding to one transport fan 13, but the average score. Therefore, the determination unit 313 can determine the air volume of the transport fan 13 using the determination table shown in Table 6 regardless of the number of dampers 14 corresponding to the transport fan 13.

  The determination unit 313 determines the amount of air supplied from the heat source unit 11 to the distribution device 102 per unit time after determining the air volume of the two transport fans 13 based on the opening degree of the ten dampers 14. Here, the amount of heat supplied from the heat source unit 11 to the distribution device 102 per unit time can be determined by a combination of the air volume of the heat source unit 11 and the set temperature of the heat source unit 11.

  The set temperature of the heat source device 11 is a constant temperature in each of the cooling operation and the heating operation. Therefore, in the air conditioning system 10, the amount of heat supplied from the heat source unit 11 to the distribution device 102 per unit time is adjusted by the air volume. The air volume of the heat source device 11 is determined according to the total air volume of the two transport fans 13. The air volume of the heat source device 11 can be adjusted, for example, in five stages. However, the air conditioning system 10 is designed such that the air volume of the heat source unit 11 is smaller than the total air volume of the two transport fans 13.

  As described above, the control device 30 acquires the temperature measured by each of the plurality of temperature sensors 18 as the current temperature of each of the plurality of conditioned spaces 21, and calculates the difference between the current temperature and the target temperature of each of the plurality of conditioned spaces 21. The heat source device 11 and the distribution device 102 are controlled to be small.

  Here, as described above, the control device 30 has the normal mode and the outing mode as operation modes.

  In the normal mode, the control device 30 acquires the user desired temperature for each of the plurality of conditioned spaces 21 and sets it as the target temperature.

  FIG. 3A is an example of the screen P1 of the operation display device 40 when the operation mode of the control device 30 is the normal mode. This screen P1 has a plurality of buttons B1 to B6. The button B1 is a button operated by the user, for example, when the user selects that the air conditioning system 10 automatically switches between the cooling operation and the heating operation of the air conditioning system 10 or the like. The button B2 is a button operated by the user when the user or the like selects that the air conditioning system 10 is manually switched between the cooling operation and the heating operation. The button B3 is a button operated by a user or the like when the air conditioning system 10 is stopped. The button B4 is a button operated by the user or the like when the screen P1 is changed to a screen P2 for setting information necessary for the outing mode as illustrated in FIG. The button B5 is a button operated by the user or the like when the user desired temperature common to the plurality of air-conditioned spaces 21 is set higher than the temperature displayed on the left side thereof (26 ° C. in the illustrated example). The button B6 is a button operated by the user or the like when the user desired temperature common to the plurality of air-conditioned spaces 21 is made lower than the temperature displayed on the left side (26 ° C. in the illustrated example).

  The screen P2 is configured such that information necessary for the outing mode (information indicating the scheduled return date and time) can be input as the return time. Further, the screen P2 has a button B11 for the user to instruct the control device 30 to start the outing mode.

  FIG. 4 is an example of the screen P3 of the operation display device 40 when the operation mode of the control device 30 is the outing mode. On the screen P3, a message indicating that the operation mode of the control device 30 is the outing mode is displayed. Further, the screen P3 has a button B21 for the user to instruct the control device 30 to cancel the outing mode.

  Control device 30 changes the operation mode from the normal mode to the outing mode upon receiving information indicating the scheduled return date and an instruction to start the outing mode. However, the control device 30 does not change the operation mode to the outing mode and changes to the normal mode when the time from the current date and time to the scheduled return date and time is set to be less than a predetermined time (for example, 6 hours). Leave as it is. For example, the specified time is specified based on a minimum time (for example, 4 hours) in which an effect of energy saving can be expected by changing the operation mode of the control device 30 from the normal mode to the outing mode. Not limited to. For example, the specified time is the minimum required for the temperature of the air-conditioned space 21 to return to the user desired temperature when the target temperature is set to the user desired temperature after the operation mode of the control device 30 is changed from the normal mode to the outing mode. , Based on the time.

  Moreover, if the control apparatus 30 receives the instruction | indication of cancellation | release of going-out mode, it will change the target temperature of each of several air-conditioning space 21 to user desired temperature.

  In the outing mode, the control device 30 sets the target temperature of each of the plurality of conditioned spaces 21 so that the air conditioning load of each of the plurality of conditioned spaces 21 is relatively smaller than that in the normal mode when the outing mode is started. The entire air conditioning system 10 is shifted to energy saving operation by changing. For example, when the going-out mode is started when the air conditioning system 10 is in the heating operation, the control device 30 stops the heat source unit 11 or blows air to the heat source unit 11 if the time until the scheduled return date is 24 hours or more. By controlling the heat source device 11 so as to perform the above, the entire air conditioning system 10 is shifted to the energy saving operation. Stopping the heat source unit 11 means stopping the generation of heat energy in the heat source unit 11. The control device 30 is not limited to the example of controlling the heat source device 11 so as to stop the heat source device 11 or to cause the heat source device 11 to blow air. For example, the control device 30 operates the heat source device 11 with the target temperature set to the user desired temperature −4 ° C. By doing so, the air conditioning system 10 may be shifted to energy saving operation. Further, when the going-out mode is started when the air conditioning system 10 is in the cooling operation, the control device 30 stops the heat source device 11 or blows air to the heat source device 11 if the time until the scheduled return date is 24 hours or more. By controlling the heat source device 11 so as to perform the above, the entire air conditioning system 10 is shifted to the energy saving operation. Here, the control device 30 is not limited to the example of controlling the heat source device 11 so as to stop the heat source device 11 or cause the heat source device 11 to blow air. For example, the target temperature is set to the user desired temperature + 3 ° C. The air conditioning system 10 may be shifted to energy saving operation by operating the.

  The control device 30 shifts the entire air conditioning system 10 to the energy saving operation, and then, as the control device 30 approaches the scheduled return date and time in an adjustment period (for example, 24 hours before to scheduled return date and time) before the preset return date and time, The target temperature of each of the air-conditioned spaces 21 is brought closer to the user desired temperature (for example, 26 ° C.) of each of the plurality of air-conditioned spaces 21 in a plurality of stages. The adjustment period is a period longer than the above-mentioned specified time. When the outing mode is started during the heating operation, the control device 30 maintains the target temperature at the user desired temperature of −2 ° C. from 24 hours before the scheduled return date to 2 hours before the scheduled return date, The target temperature is maintained at the user desired temperature from 2 hours before the scheduled return date to the scheduled return date. When the going-out mode is started during the cooling operation, the control device 30 maintains the target temperature at the user's desired temperature from 24 hours before the scheduled return date to 2 hours before the scheduled return date and time. The target temperature is maintained at the user desired temperature for 2 hours before the scheduled return date and time. The target temperature is a temperature set according to the user desired temperature and the operation mode, and may be the same as the user desired temperature or different. The user desired temperature is a temperature instructed for each of the plurality of conditioned spaces 21 by the operation of the operation display device 40 by the user or the like, and is a temperature desired by the user with respect to the conditioned spaces 21.

  Table 7 below shows the relationship between the time from the current date and time to the planned return date and time and the target temperature for the air-conditioned space 21 in the outing mode described above.

  In the air conditioning system 10, for example, when the outing mode is started during heating operation, the adjustment period is T0, the user desired temperature is t0, and the first target temperature (initial target temperature) among a plurality of target temperatures. Te1, the final target temperature (final target temperature) is te2 (> te1), the target temperature te1 is maintained for T1 (eg, 22 hours), and the target temperature te2 is maintained (eg, 2 hours) is T2 Then, the temperature of the air-conditioned space 21 changes, for example, as shown by a solid line in FIG. Here, the target temperature in multiple stages means that the absolute value of the difference between the target temperature and the constant target temperature is reduced stepwise, and the absolute value of the difference between the final target temperature and the user desired temperature. Is smaller than the absolute value of the difference between the initial target temperature and the user desired temperature. In the outing mode, the control device 30 has the maintenance time T1 of the first stage target temperature te1 out of the plurality of stages of target temperature longer than the maintenance time T2 of the last stage target temperature te2.

  The air conditioning system of the comparative example has the same basic configuration as the air conditioning system 10 and is different in that the target temperature is directly changed from the heating stop instruction temperature to the user desired temperature when the control device 30 is in the outing mode. In the air conditioning system of the comparative example, for example, when the outing mode is started during the heating operation, the adjustment period is T10, the user desired temperature is t0, and the temperature of the air conditioned space 21 reaches the user desired temperature during the adjustment period. When the time is T11 (for example, 8 hours) and the time for maintaining the temperature of the conditioned space 21 at the user desired temperature in the adjustment period is T12 (for example, 16 hours), the temperature of the conditioned space 21 is, for example, a solid line in FIG. It changes as shown in. In the air conditioning system of the comparative example, if there is no outside air temperature sensor that measures the temperature of the outside air of the building 20, the worst case is assumed in order to make the temperature of the air conditioned space 21 reach the user desired temperature t0 by the scheduled return date and time. Therefore, it is necessary to set a relatively long time from the date of restarting the cooling or heating of the heat source unit 11 to the scheduled date of returning home, and in some cases, useless air conditioning time becomes long.

  In the air conditioning system 10 of the present embodiment, the target temperature of the air-conditioned space 21 is changed stepwise in the adjustment period T0, so that the energy consumption corresponding to the portion indicated by the dots in FIG. 5 is reduced compared to the air conditioning system of the comparative example. It can be seen that this can be reduced.

  Even when the operation mode is the outing mode, the control device 30 is instructed to cancel the outing mode by operating the operation display device 40 of the user, for example, when the user returns home earlier than the scheduled return date and time, etc. Change the operation mode from outing mode to normal mode.

  The control device 30 described above is realized, for example, as a main hardware configuration of a device including a processor that executes a program. The device including the processor may be a micro processing unit (MPU) in which a semiconductor memory is separately provided, or a micro controller that is housed in a single package together with the semiconductor memory. The control device 30 preferably includes at least a RAM (Random Access Memory) as a memory, and at least one of a ROM (Read-Only Memory) and an EEPROM (Electrically Erasable Programmable Read-Only Memory).

  In addition to being provided in a state written in a ROM, the program may be provided by a computer-readable recording medium that is a recording medium such as an optical recording disk or a recording medium including a flash memory. The program may be provided through a telecommunication line such as the Internet or a mobile communication network. The program provided by the recording medium or the telecommunication line is preferably stored in a rewritable nonvolatile memory (for example, EEPROM).

  The building 20 is not limited to a detached house, but may be another building such as an apartment house or a store. Although the structure provided with the heat pump type heat source device 11 was illustrated as the air conditioning system 10, the air conditioning system 10 may be configured to pass hot water or cold water through a plurality of fan coil units. When only heating is performed, the air conditioning system 10 may be configured to pass steam or hot water through a radiator. Moreover, in the air conditioning system 10 mentioned above, although the HEPA filter is employ | adopted as the air filter 12, it is not restricted to a HEPA filter, For example, a ULPA filter (ULPA: Ultra Low Penetration Air) etc. may be sufficient. The number of transport fans 13 described above, the number of dampers 14 and the outlets 15, the number of temperature sensors 18, and the like are examples, and may be changed as appropriate.

  In the air conditioning system 10 described above, the acquisition unit 310 performs wired communication with the temperature sensor 18, but is not limited thereto, and may perform wireless communication, for example. There are no particular restrictions on the communication protocol between the acquisition unit 310 and the temperature sensor 18. In the air conditioning system 10 described above, the acquisition unit 310 inquires each of the plurality of temperature sensors 18 about the current temperature. However, the plurality of temperature sensors 18 may transmit the current temperature to the acquisition unit 310 at an appropriate timing. Good.

  Further, the information indicating the scheduled return date and time is not limited to the scheduled return date and time, and may be, for example, the time until the scheduled return date and time.

  Further, in the outing mode, the control device 30 brings the target temperature of each of the plurality of air-conditioned spaces 21 closer to the user desired temperature of each of the plurality of air-conditioned spaces 21 in two stages as it approaches the scheduled return date and time in the adjustment period. However, there may be a plurality of stages, for example, three stages.

  The control device 30 has a table that defines the relationship between the adjustment period T0, the maintenance time T1 of the target temperature te1 and the maintenance time T2 of the target temperature te2, and the area where the building 20 is built. The adjustment period T0 and the maintenance times T1 and T2 may be changed with reference to this table. For example, when the area where the building 20 is built is a cold region such as the Tohoku region, the control device 30 sets the adjustment period T0 to 24 hours, the maintenance time T1 to 22 hours, and the maintenance time T2 to 2 hours. On the other hand, when the area where the building 20 is built is a standard area such as the Kansai region, the control device 30 sets the adjustment period T0 to 12 hours, the maintenance time T1 to 10 hours, and the maintenance time T2 to 2 hours. Moreover, the control apparatus 30 changes the target temperature (target temperature te1, te2) of Table 7 for every area other than changing the adjustment period T0 and each maintenance time T1, T2 for every area where the building is built. Also good.

  As is clear from the above-described embodiment, the air conditioning system 10 according to the first aspect includes the heat source device 11, the distribution device 102, a plurality of temperature sensors, and the control device 30. The heat source unit 11 generates cold air or warm air as heat energy. The distribution device 102 distributes the heat energy generated by the heat source device 11 to the plurality of air-conditioned spaces 21 in the building 20. The plurality of temperature sensors 18 measure the temperature of each of the plurality of conditioned spaces 21. The control device 30 acquires the temperature measured by each of the plurality of temperature sensors 18 as the current temperature of each of the plurality of conditioned spaces 21, and reduces the difference between the current temperature and the target temperature of each of the plurality of conditioned spaces 21. The heat source device 11 and the distribution device 102 are controlled. The control device 30 has a normal mode and an outing mode as operation modes. In the normal mode, the control device 30 acquires the user desired temperature for each of the plurality of conditioned spaces 21 and sets it as the target temperature. In the outing mode, the control device 30 sets the target temperature of each of the plurality of conditioned spaces 21 so that the air conditioning load of each of the plurality of conditioned spaces 21 is relatively smaller than that in the normal mode when the outing mode is started. The target temperature of each of the plurality of air-conditioned spaces 21 is made closer to the user desired temperature of each of the plurality of air-conditioned spaces 21 in a plurality of stages as it approaches the scheduled home return date and time in an adjustment period prior to the preset scheduled home date and time.

  According to the above configuration, the air conditioning system 10 can reduce energy consumption. The air conditioning system 10 is particularly useful when used as an entire building air conditioning system. This is because, in the entire building air-conditioning system, the air-conditioning space 21 has a relatively long start-up time to the user-desired temperature after the air-conditioning of the entire building 20 is stopped and heat storage in the walls of the building 20 is reduced. . In addition, since the air conditioning system 10 does not need to use an outside air temperature sensor that measures the temperature of the outside air of the building 20, it is possible to prevent the control of the heat source device 11 and the distribution device 102 by the control device 30 from becoming complicated. It becomes.

  In the air conditioning system according to the second aspect, in the first aspect, in the first mode, the control device 30 is configured such that, in the outing mode, the maintenance time of the target temperature of the first stage among the plurality of stages is longer than the maintenance time of the target temperature of the last stage. long. As a result, the air conditioning system 10 can further reduce energy consumption.

  In the air conditioning system 10 according to the third aspect, in the first or second aspect, in the first or second aspect, in the outing mode, the control device 30 has a time difference between the start date and time of the outing mode and the scheduled return date and time is greater than the length of the adjustment period. The generation of thermal energy in the heat source unit 11 is stopped until the adjustment period starts. As a result, the air conditioning system 10 can further reduce energy consumption.

  The air conditioning system 10 according to the fourth aspect includes, in any one aspect of the first to third aspects, an operation unit (operation display device 40) that can be operated by the user. The air conditioning system 10 can input information indicating the scheduled return home date, an instruction to start the going-out mode, and an instruction to cancel the going-out mode to the control device 30 by the operation of the operation unit by the user. When the control device 30 receives the input of information indicating the scheduled return date and the instruction to start the outing mode, the control device 30 changes the operation mode from the normal mode to the outing mode, and receives an instruction to cancel the outing mode. Each target temperature is changed to a user desired temperature. Thereby, the air conditioning system 10 can improve the usability of the user while reducing energy consumption.

  In the air conditioning system 10 according to the fifth aspect, in any one of the first to fourth aspects, the distribution device 102 distributes the cold air or the warm air from the heat source unit 11 to each of the plurality of air-conditioned spaces 21. The end duct 162 branched into a plurality of systems, the plurality of dampers 14 for adjusting the flow rate of the air blown from the plurality of system end ducts 162 to the plurality of conditioned spaces 21, and the air from the heat source unit 11 are converted to the plurality of dampers 14. And a transport fan 13 to be sent to each of the above. Thereby, since the air conditioning system 10 accelerates the cool air or the warm air from the heat source device 11 by the transport fan 13, the amount of heat can be adjusted even in the air conditioned space 21 away from the heat source device 11. Further, in the air conditioning system 10, the amount of heat supplied per unit time to the air conditioned space 21 is adjusted by the transfer fan 13 and the damper 14, so that the accuracy of the amount of heat supplied per unit time for each air conditioned space 21 is increased. Is possible.

DESCRIPTION OF SYMBOLS 10 Air conditioning system 11 Heat source machine 13 Conveyance fan 14 Damper 16 Air supply duct 18 Temperature sensor 20 Building 21 Air-conditioned space 30 Control apparatus 40 Operation display apparatus (operation part)
102 Dispensing device 162 End duct

Claims (5)

A heat source machine that generates cold air or warm air as heat energy;
A distribution device that distributes the thermal energy generated by the heat source unit to a plurality of conditioned spaces in a building;
A plurality of temperature sensors for measuring the temperature of each of the plurality of conditioned spaces;
Acquiring the temperature measured by each of the plurality of temperature sensors as the current temperature of each of the plurality of conditioned spaces, and reducing the difference between the current temperature and the target temperature of each of the plurality of conditioned spaces; A control device for controlling the distribution device,
The control device has a normal mode and an outing mode as operation modes,
The controller is
In the normal mode, the user desired temperature for each of the plurality of air-conditioned spaces is obtained as a target temperature
In the outing mode, when the outing mode is started, the target temperature of each of the plurality of conditioned spaces is changed so that the air conditioning load of each of the plurality of conditioned spaces is relatively smaller than that in the normal mode. The target temperature of each of the plurality of air-conditioned spaces is made closer to the user desired temperature of each of the plurality of air-conditioned spaces in a plurality of stages as it approaches the scheduled home return date and time in an adjustment period prior to the preset scheduled home date and time. A featured air conditioning system. 2. The air conditioning system according to claim 1, wherein in the outing mode, the maintenance time of the target temperature at the first stage among the plurality of stages is longer than the maintenance time of the target temperature at the last stage. In the outing mode, when the time difference between the start date and time of the outing mode and the scheduled return date and time is greater than the length of the adjustment period, the control device, in the outing mode, the heat energy in the heat source machine until the adjustment period starts The air conditioning system according to claim 1 or 2, wherein generation is stopped. It has an operation unit that can be operated by the user,
By the operation of the operation unit by the user, it is possible to input information indicating the scheduled return date and time, an instruction to start the outing mode, and an instruction to cancel the outing mode to the control device,
The controller is
When receiving information indicating the scheduled return date and an instruction to start the outing mode, the operation mode is changed from the normal mode to the outing mode,
The air conditioning system according to any one of claims 1 to 3, wherein when an instruction to cancel the outing mode is received, the target temperature of each of the plurality of air conditioned spaces is changed to a user desired temperature. The distributor is
A terminal duct branched into a plurality of systems so as to distribute the cold air or the warm air from the heat source unit to each of the plurality of air-conditioned spaces;
A plurality of dampers for adjusting the flow rate of air blown from the plurality of terminal ducts to the plurality of conditioned spaces;
The air-conditioning system according to claim 1, further comprising: a conveyance fan that sends air from the heat source unit to each of the plurality of dampers.

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