JP2013185743A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system that improves heating efficiency while suppressing the introduction cost.SOLUTION: An air conditioning system includes: a first space in which a heating device is installed; a second space in communication with the first space by a communication duct; a duct fan that supplies air from the first space to the second space; and a control part for controlling the duct fan. The control part increases at least the air supply quantity per unit time of the duct fan when it is determined that both a remaining heating power condition indicating that the heating device has remaining heating power and a heating necessity condition indicating that the second space needs to be heated are satisfied, and decreases at least the air supply quantity per unit time of the duct fan when it is determined that the heating limit condition indicating the heating device has no remaining heating power or a heating unnecessary condition indicating that the second space does not need to be heated is satisfied.

Description

  The present invention relates to an air conditioning system, and more particularly to an air conditioning system capable of efficiently heating a plurality of rooms with one heating device.

  2. Description of the Related Art Conventionally, in a building such as a house, room temperature adjustment is performed with a heating device such as an air conditioner in a living room or the like that is continuously used by a resident. On the other hand, there are many cases where a heating device is not provided in a space that is not continuously used by residents such as a corridor, a dressing room, and a toilet. In particular, when a resident moves from a space heated by a heating device to a space without a heating device in the winter when the outside air temperature decreases, the resident's body is greatly affected by a sudden change in blood pressure due to a sudden temperature change. There is a risk of causing so-called heat shock.

  However, it is impractical to install a heating device in every space where a resident is likely to move and to always heat it, in addition to an increase in introduction cost and running cost and poor heating efficiency. Therefore, various air conditioning systems have been proposed in which a plurality of spaces in a building are connected by a duct fan and warm air is blown from a space where a heating device is installed to a space where no heating device is installed.

  In particular, a sensor that detects the room temperature is provided in each of the space where the building heating device is installed and the space where it is not installed, and the heating device is installed when the temperature difference between the two spaces exceeds a predetermined temperature difference. There is an air conditioning system that operates a duct fan that supplies air from a closed space to a space where no heating device is installed (see Patent Document 1 and Patent Document 2). According to this system, the duct fan is operated only when the temperature difference that can cause a heat shock is exceeded, so unnecessary operation of the fan is suppressed, leading to power saving, and if necessary, the temperature between multiple spaces. The difference can be mitigated and heat shock can be prevented.

JP-A-2005-90824 JP 2009-216367 A

  However, since a plurality of spaces are heated by one heating device, when a heating device having a small heating capacity is used, the plurality of spaces cannot be sufficiently heated. In addition, a heating apparatus having a large heating capacity has a high introduction cost and is often difficult to adopt.

  Then, an object of this invention is to provide the air-conditioning system which raised heating efficiency, suppressing introduction cost.

  The air conditioning system according to claim 1 is a building air conditioning system having a space partitioned by at least two or more spaces, and the first space in which the heating device is installed, and the first space and the ventilation duct communicate with each other. A second space formed in the ventilation duct, air supply means for supplying air from the first space to the second space, and a control unit for controlling the air supply means, When it is determined that the control unit satisfies both a heating remaining power condition indicating that the heating apparatus has a surplus heating capacity and a heating necessary condition indicating that the second space needs to be heated. In addition, at least the air supply amount per unit time of the air supply means is increased, and there is no need for heating limit conditions indicating that there is no surplus heating capacity of the heating device or heating the second space. If it is determined that the heating required condition is satisfied indicating the is characterized in that it comprises reducing the amount of air supplied per at least a unit of the air supply means time.

  The air conditioning system according to claim 2, further comprising: a first room temperature sensor that measures a room temperature of the first space; and a second room temperature sensor that measures a room temperature of the second space; And determining that the remaining heating space condition is satisfied when the fluctuation range of the room temperature of the first space within a predetermined time is within a predetermined temperature fluctuation range determined in advance, and the room temperature of the first space is the first room temperature. And determining that the heating requirement is satisfied when the temperature is higher than a predetermined first temperature range than the room temperature of the second space, and increasing the air supply amount per unit time of the air supply means, When the room temperature of the first space decreases and does not show a recovery tendency within a predetermined set time, it is determined that the heating limit condition is satisfied, and the room temperature of the first space and the room temperature of the second space are determined. Is the first temperature range It is characterized in that it is determined that the heating required condition is satisfied in case of a narrow second temperature range.

  The air conditioning system according to claim 3, wherein the heating device heats the first space at least by electricity, and a current sensor that measures a current supplied from a power source to the heating device; A second room temperature sensor for measuring the room temperature of the second space, and determining that the remaining heating power condition is satisfied when the current has decreased by a predetermined rate or more than at least a peak value within a predetermined period. Determining that the heating requirement is satisfied when the room temperature of the second space is lower than a predetermined target temperature by a predetermined third temperature range or more, and the current is at least a peak value within a predetermined period. When the current of a predetermined ratio or more is maintained for a predetermined determination period or more, it is determined that the heating limit condition is satisfied, and when the room temperature of the second space reaches the target temperature, It is characterized in that it is determined that the tufts required condition is satisfied.

  The air conditioning system according to claim 4 further includes a second room temperature sensor that measures a room temperature of the second space, and the control unit is capable of transmitting and receiving information to and from the heating device, and the control The unit determines that the remaining heating space condition is satisfied when a signal transmitted when the heating device is in standby or decelerating operation is received, and the room temperature of the second space is greater than the set temperature received from the heating device. Is determined to satisfy the heating requirement if the heating width is lower than a predetermined width, and when the heating device receives a signal to be transmitted when there is no heating capacity, the heating limit condition is determined, and When the difference between the room temperature of the space 2 and the set temperature received from the heating device is within a predetermined range, it is determined that the heating unnecessary condition is satisfied.

  The air conditioning system according to claim 5, wherein the second space communicates with an exhaust sleeve that exhausts air to at least a third space partitioned in the building, and the third space can be directly or otherwise. It is characterized by communicating with the introduction sleeve for introducing air into the first space through the space.

  The air conditioning system according to claim 6 is characterized in that an end of the introduction sleeve on the first space side is close to an air inlet of the heating device.

  In general, heating devices such as air conditioners and fan heaters are not always operated at the maximum heating capacity, but at the beginning of the operation of the heating device, the temperature of the space in which the heating device is installed is higher than the set room temperature. Therefore, when the room temperature approaches the set temperature, it is operated with a small heating capacity for stabilizing the room temperature. According to the air conditioning system of claim 1, the control unit has a heating remaining power condition indicating that the heating apparatus has a surplus heating capacity, and a heating necessary condition indicating that the second space needs to be heated. When it is determined that both are satisfied, the air supply amount per unit time of the air supply means is increased. By increasing the amount of air supply per unit time of the air supply means when the heating capacity condition is satisfied, the heating device is large, such as when the room temperature of the first space is lower than the set temperature of the heating device. When operating with heating capacity, that is, when there is little remaining capacity in the heating capacity of the heating device, the air supply amount per unit time of the air supply means is not increased. Therefore, since the heating capacity of the heating device can be concentrated in the first space, the first space can be quickly heated even by a heating device with a small capacity. Further, by increasing the air supply amount per unit time of the air supply unit when the heating requirement is satisfied, for example, there is a temperature difference that may cause a heat shock between the first space and the second space. If not, the air supply unit does not increase the air supply amount per unit time, and the heating device only heats the first space, thereby suppressing the supply of unnecessary heat energy to the second space, The running cost of the heating device can be reduced.

  On the other hand, when the control unit reduces the air supply amount per unit time of the air supply means when the heating limit condition indicating that the heating apparatus has no remaining capacity, the heating apparatus has no remaining capacity. By concentrating the heating capacity in the first space, at least the first space can be sufficiently heated. Further, even when it is determined that the heating unnecessary condition indicating that the second space does not need to be heated is satisfied, the air supply amount per unit time of the air supply means is reduced, so that the second space is unnecessary. It is possible to suppress the supply of heat energy and reduce the running cost of the heating device.

  According to the air conditioning system of claim 2, when the fluctuation range of the room temperature in the first space within a predetermined time is within a predetermined temperature fluctuation range determined in advance, that is, the room temperature of the first space is stable. If it is, it is determined that there is a heating capacity condition. Further, when the room temperature of the first space is higher than the room temperature of the second space by a predetermined first temperature range, that is, when there is a difference in room temperature to the extent that a heat shock can occur, the heating requirement is satisfied. Judge. Furthermore, after increasing the air supply amount per unit time of the air supply means, when the room temperature of the first space decreases and does not show a recovery tendency within a predetermined set time, that is, the heating device reduces the room temperature. If it cannot be raised, it is determined that the heating limit condition is satisfied. When the temperature difference between the room temperature of the first space and the room temperature of the second space is within the second temperature range that is narrower than the first temperature range, that is, there is no difference in room temperature that can cause a heat shock. When it is determined, it is determined that the heating unnecessary condition is satisfied. Therefore, since the air supply means can be controlled only by the information on the room temperature of the first space and the second space measured by the first room temperature sensor and the second room temperature sensor, it is generally available on the market. This air conditioning system can be realized using a simple heating device, and the introduction cost can be kept low.

  According to the air conditioning system according to claim 3, when the current decreases by a predetermined rate or more than at least a peak value within a predetermined period, that is, when the power consumption of the heating device decreases by a predetermined value or more, the remaining heating capacity condition is satisfied. Judge. Further, when the room temperature of the second space is lower than the predetermined target temperature by a predetermined third temperature range or more, that is, when the room temperature of the second space is low enough to cause a heat shock, Judge that the heating requirements are met. Furthermore, when the current is maintained at least for a predetermined determination period or more than the predetermined ratio of the peak value within the predetermined period, that is, when the power consumption of the heating device does not fall below the predetermined power, the heating limit Judge that the condition is met. Then, when the room temperature of the second space reaches the target temperature, that is, when the room temperature of the second space is high enough not to cause a heat shock, it is determined that the heating unnecessary condition is satisfied. Therefore, the air supply means can be controlled by the information on the room temperature of the second space measured by the second room temperature sensor and the current measured by the current sensor installed between the power source and the heating device. Therefore, this air conditioning system can be realized by using a commercially available general heating device, the introduction cost can be kept low, and the accurate state of the heating device can be grasped based on the current. Thus, the air supply means can be controlled.

  According to the air conditioning system of claim 4, the control unit transmits and receives information to and from the heating device, grasps the state of the heating device, and based on the information on the state of the heating device, the heating remaining power condition, Since the air supply means is controlled by determining the heating necessary condition, the heating limit condition, and the heating unnecessary condition, the air supply means can be controlled based on the more accurate state of the heating device.

  According to the air conditioning system of claim 5, the second space communicates with an exhaust sleeve that exhausts air to at least the third space partitioned in the building, and the third space can be directly or otherwise. Since the air is communicated with the introduction sleeve for introducing air into the first space through the space, the warm air introduced from the first space into the second space by the air supply means further passes through the third space, Return to the first space. Heating efficiency can be increased by looping air in this way.

  According to the air conditioning system of the sixth aspect, since the end portion on the first space side of the introduction sleeve into which relatively cool air is introduced is close to the intake port of the heating device, the heat exchange efficiency of the heating device is improved. Can be increased.

The figure which shows schematic structure of the air conditioning system of 1st Embodiment. The figure explaining the positional relationship of the ventilation duct of the air conditioning system of 1st Embodiment, an introduction sleeve, and an exhaust sleeve. The flowchart which shows an example of the duct fan control process of 1st Embodiment. The graph which shows the change of the power consumption of a heating apparatus. The graph which shows the relationship between the power consumption of a heating apparatus, and energy consumption efficiency. The figure which shows schematic structure of the modification of the air conditioning system of 1st Embodiment. The figure which shows schematic structure of the air conditioning system of 2nd Embodiment. The flowchart which shows an example of the duct fan control process of 2nd Embodiment. The figure which shows schematic structure of the air conditioning system of 3rd Embodiment. The flowchart which shows an example of the duct fan control process of 3rd Embodiment.

[First Embodiment]
Hereinafter, the first embodiment of the air conditioning system 1 of the present invention will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the building of this embodiment is provided with at least a first space 10 in which the heating device 2 is installed, and a second space 20 and a third space 30 in which the heating device 2 is not installed. It has been. The first space 10 and the second space 20 communicate with each other through a ventilation duct 3, and a duct fan 5 controlled by the control unit 4 is provided at an intermediate portion of the ventilation duct 3. In the present embodiment, the “air supply means” in the present invention corresponds to the duct fan 5. The “air supply means” may be of any configuration as long as it can supply air from the first space 10 to the second space 20.

  In addition, an exhaust sleeve 7 is provided in the partition wall 6 a between the second space 20 and the third space 30, so that the second space 20 and the third space 30 communicate with each other. An introduction sleeve 8 is provided in the partition wall 6 b between the third space 30 and the first space 10, and the first space 10 and the third space 30 are communicated with each other. When the duct fan 5 is operated, the air in the first space 10 flows into the second space 20 through the ventilation duct 3 as indicated by arrows in FIG. From the second space 20, air flows into the third space 30 through the exhaust sleeve 7, and in the third space 30, air flows into the first space 10 through the introduction sleeve 8. Therefore, when the duct fan 5 is operating, the air warmed in the first space 10 flows into the third space 30 through the second space 20 and further returns to the first space 10. A looped air flow path is created. Accordingly, warm air is not exhausted to the outside, and the air conditioning system 1 with high heating efficiency can be obtained.

  As shown in FIG. 2, the exhaust sleeve 7 provided in the partition wall 6a between the second space 20 and the third space 30 is provided at a low position of the partition wall 6a. Accordingly, relatively cool air in the second space 20 is exhausted to the third space 30, and relatively warm air in the second space 20 stays in the second space 20. Thus, the room temperature of the second space 20 can be increased efficiently. Further, when the air in the second space 20 is warmed as a whole, the air in the lower position of the second space 20 is also warmed, so that the warm air is also in the lower position of the third space 30 via the exhaust sleeve 7. Exhausted. Since this warm air rises from a lower position of the third space 30, the third space 30 can be gradually warmed as a whole. The introduction sleeve 8 provided on the partition wall 6b between the third space 30 and the first space 10 is provided with an end on the first space 10 side close to the air inlet 9 of the heating device 2. It has been. As a result, air having a relatively low temperature flowing into the first space 10 from the third space 30 is sucked into the air intake 9 of the heating device 2 as it is, and heated in the heating device 2 so that the warm air becomes the first air. It is supplied to the space 10. Therefore, the heat exchange efficiency of the heating device 2 can be increased and the heating device 2 can be operated efficiently.

  The first space 10 is provided with a first room temperature sensor 11 that measures the room temperature of the first space 10, and the second space 20 measures the room temperature of the second space 20. A second room temperature sensor 21 is provided. The first room temperature sensor 11 and the second room temperature sensor 21 are connected to the control unit 4 via, for example, a LAN (Local Area Network), and are measured by the first room temperature sensor 11 and the second room temperature sensor 21. The room temperature information is transmitted to the control unit 4. The first space 10, the second space 20, and the third space 30 are naturally provided with doors as doorways, windows for daylighting and ventilation, and other various housing facilities. Is omitted. In addition to the three spaces, the building may have a partitioned space, but illustrations other than the three spaces are omitted.

  The first space 10 is a living room such as a living room, for example, and is a space in which a resident usually lives. As described above, the heating device 2 is installed in the first space 10. The heating device 2 measures at least the room temperature of the installed first space 10 and raises the room temperature when the temperature is lower than a predetermined target room temperature by a predetermined amount or more. A control MPU (not shown) for controlling to operate with a relatively small heating capacity for stabilizing the room temperature when the heating operation is performed with a near large heating capacity and close to the target room temperature is incorporated. . The heating device 2 having the rated capacity corresponding to the floor area of the first space 10 is optimal. If the rated capacity is lower than this, the first space 10 cannot be sufficiently heated, and the heating device 2 having a rated capacity that is larger than the floor area of the first space 10 has an excessive capacity. Therefore, the introduction cost is unnecessarily high and the energy consumption efficiency is low.

  The heating device 2 is an air conditioner in the present embodiment. An air conditioner warms the air in an indoor space by compression and expansion of a circulating heat medium using a heat pump mechanism, and is a general so-called compressor and expansion of a heat medium by a compressor that uses electricity as a power source. Although an air conditioner can be used as the heating device 2, an air conditioner using a heat pump with another power source such as gas, kerosene, geothermal heat, solar heat, or the like may be used. An air conditioner using such a heat pump has high energy consumption efficiency (COP) and is suitable as the heating device 2 used in the air conditioning system 1 of the present invention. The heating device 2 in the present invention is an air conditioner. However, the air in the indoor space may be warmed using another heat source such as an oil fan heater, a gas fan heater, an oil heater, or a ceramic heater.

  The second space 20 is, for example, a dressing room. The heating device 2 is not installed in this dressing room. The third space 30 is, for example, a hallway. The heating device 2 is not installed in this hallway. In addition, these 2nd space 20 and the 3rd space 30 are not limited to the thing in which the heating apparatus is not installed. For example, a spot-like heating device may be installed in part. Moreover, although the 1st space 10, the 2nd space 20, and the 3rd space 30 were made into the living room, the dressing room, and the corridor, respectively, it is not limited to this, It depends on conditions, such as a building structure and a floor plan Accordingly, these spaces may be used for any purpose. Note that the first space 10 is preferably a space where the heating device 2 is particularly necessary because the residence time of the resident is long, and the heating efficiency can be enhanced when the space is a relatively large space. In addition, the second space 20 and the third space 30 are preferably spaces where the priority of the heating device 2 is lower than that of the first space 10 because the residence time of the resident is relatively short. It is preferable that the space is at least narrower than the first space 10.

  Although not shown in detail, the control unit 4 includes, for example, a CPU (Central Processing Unit) for controlling the operation of the duct fan 5, a ROM (Read Only Memory) in which a control program for the duct fan 5 is stored, and a first room temperature sensor. And a RAM (Random Access Memory) that stores the room temperature received from the second room temperature sensor 21 and the state of the duct fan 5, a LAN-I / F (Local Area Network interface) that transmits and receives information to and from the LAN, and the like. I have. In addition, the structure of the control part 4 is not limited to this, What kind of structure may be sufficient if it is a structure which can implement | achieve control of the air conditioning system 1 of this invention.

  The air conditioning system 1 configured as described above is efficient because the control unit 4 controls the duct fan 5 based on the four conditions of the remaining heating power condition, the heating requirement, the rigging limit condition, and the heating unnecessary condition. Heating is possible. The heating remaining power condition is a condition indicating that the heating device 2 has sufficient heating capacity, the heating requirement is a condition indicating that the second space 20 needs to be heated, and the heating limit condition is It is a condition indicating that there is no surplus in the heating capacity of the heating device 2, and the heating unnecessary condition is a condition indicating that it is not necessary to heat the second space 20. Hereinafter, the control process of the duct fan 5 performed mainly by the CPU of the control unit 4 will be described with reference to FIG.

  In the duct fan 5 control process, the CPU of the control unit 4 first determines whether or not the room temperature measured by the first room temperature sensor 11 is 5 degrees or more higher than the room temperature measured by the second room temperature sensor 21 (S101). . This temperature range of 5 degrees corresponds to the “first temperature range” in the present invention. Further, in the present embodiment, a condition in which the room temperature measured by the first room temperature sensor 11 is 5 degrees or more higher than the room temperature measured by the second room temperature sensor 21 corresponds to the heating requirement. That is, when the room temperature of the first space 10 is 5 degrees or more higher than the room temperature of the second space 20, the resident who has moved from the first space 10 to the second space 20 receives a temperature difference of 5 degrees or more. Therefore, it is necessary to increase the temperature of the second space 20 to narrow the temperature difference with the first space 10 because the heat shock may affect the body. Heating is required.

  If it is determined that the room temperature measured by the first room temperature sensor 11 is not more than 5 degrees higher than the room temperature measured by the second room temperature sensor 21 (S101: NO), this process is waited for 5 minutes (S102), and then again. The process of step S101 is repeated. That is, when the heating requirement is not satisfied, the duct fan 5 does not need to be operated to heat the second space 20, so that the processing does not proceed and the temperatures of the first space 10 and the second space 20 are not increased. Continue to monitor if the difference is more than 5 degrees.

  On the other hand, if it is determined that the room temperature measured by the second room temperature sensor 21 is 5 degrees or more higher than the room temperature measured by the second room temperature sensor 21 (S101: YES), then, the first room temperature sensor 11 for 10 minutes. It is determined whether or not the measured fluctuation range of the room temperature is 1 degree or less (S103). In this embodiment, this condition corresponds to a heating remaining power condition. That is, when the fluctuation range of the room temperature of the first space 10 for 10 minutes is 1 degree or less, the room temperature of the first space 10 is stable, so that the operation of the heating device 2 is performed by the heating of the heating device 2. It can be estimated that the operation with a large heating capacity close to the limit of the capacity is switched to the operation with a relatively small heating capacity for stabilizing the room temperature. I understand that there is. In the present embodiment, the “room temperature fluctuation range of the first space within a predetermined time” according to the present invention corresponds to the room temperature fluctuation range measured by the first room temperature sensor 11 for 10 minutes. In this embodiment, “within a predetermined temperature fluctuation range set in advance” corresponds to the fluctuation range of the room temperature being 1 degree or less.

  If it is determined that the fluctuation range of the room temperature measured by the first room temperature sensor 11 for 10 minutes is 1 degree or less (S103: YES), the heating fan power condition is satisfied, so the duct fan 5 is operated and the second space The warm air of the first space 10 is caused to flow into 20 (S104). That is, the duct fan 5 is operated when it is determined in step S101 that the heating requirement is satisfied and in step S102 it is determined that the remaining heating power condition is satisfied. On the other hand, if it is determined that the fluctuation range of the room temperature measured by the first room temperature sensor 11 for 10 minutes is not 1 degree or less (S103: NO), the room temperature in the first space 10 is stable because the heating remaining power condition is not satisfied. Wait until processing.

  In step S104, when the duct fan 5 is operated, the warm air of the first space 10 flows into the second space 20, so that the room temperature of the first space 10 decreases (S105). Then, after waiting for the processing for 5 minutes (S106), it is next determined whether or not the room temperature of the first space 10 shows a recovery tendency during the latest 5 minutes (S107). Here, that the room temperature of the first space 10 shows a recovery tendency is that an expected change in temperature over time when the duct fan 5 is operated in advance is stored in, for example, the ROM of the control unit 4 and compared with the expected change. Thus, it is determined that the recovery tendency is exhibited when the room temperature decrease of the first space 10 is moderate and when the room temperature of the first space 10 starts to increase. In the present embodiment, this condition corresponds to the heating limit condition. The fact that the room temperature of the first space 10 does not show a recovery tendency means that even if the heating device 2 warms the first space 10 with a large heating capacity close to the limit of the heating capacity, the second space is set via the duct fan 5. The amount of heat released into the space 20 is larger, indicating that the first space 10 is not warmed.

  If it is determined that the room temperature of the first space 10 shows a recovery tendency (S107: YES), the operation of the duct fan 5 is continued (S109). On the other hand, if it is determined that the room temperature of the first space 10 does not show a recovery tendency (S107: NO), the heating fan satisfies the heating limit condition, so the operation of the duct fan 5 is stopped (S108), and this process ends.

  If the operation of the duct fan 5 is continued (S109), it is next determined whether or not the difference between the room temperature measured by the first room temperature sensor 11 and the room temperature measured by the second room temperature sensor 21 is within 2 degrees. (S110). In the present embodiment, the “second temperature range” in the present invention corresponds to this within 2 degrees. Moreover, in this embodiment, this condition corresponds to a heating unnecessary condition. That is, when the difference between the room temperature of the first space 10 and the room temperature of the second space 20 is 2 degrees or less, there is no possibility that the resident's body is adversely affected by heat shock, and the duct fan 5 is Even if it continues to operate, the room temperature of the second space 20 can hardly be raised, so it is determined that it is not necessary to heat the second space 20.

  When it is determined that the difference between the room temperature measured by the first room temperature sensor 11 and the room temperature measured by the second room temperature sensor 21 is within 2 degrees (S110: YES), the second space 20 is heated. Since it is not necessary, the duct fan 5 is stopped (S111), and after waiting for the process for another 5 minutes, the process returns to step S101 to repeat the process. That is, in response to the temperature change of the first space 10 and the temperature of the second space 20, the process of determining whether or not the duct fan 5 needs to be further operated is continued. On the other hand, if it is determined that the difference between the room temperature measured by the first room temperature sensor 11 and the room temperature measured by the second room temperature sensor 21 is not within 2 degrees (S110: NO), the room temperature of the first space 10 and the first room temperature The operation of the duct fan 5 is continued until the difference between the second space 20 and the room temperature is within 2 degrees.

  As described above, the duct fan 5 is controlled based on the heating requirement condition and the heating unnecessary condition, so that the duct fan 5 is not operated when it is unnecessary, so that power for operating the duct fan 5 itself can be saved. In addition, it is possible to save power by suppressing heating with a large heating capacity even when the heating device 2 is unnecessary. In addition, when the duct fan 5 is controlled based on the heating remaining power condition and the heating limit condition, when there is no remaining heating capacity, the first space 10 is first intensively heated to concentrate on the first space 10. The duct fan 5 is operated only when there is room, and the capacity of the heating device 2 can be used for heating the second space 20.

  Next, changes in the amount of power used by the heating device 2 will be described with reference to FIGS. 4 and 5. In the graph of FIG. 4, the solid line indicates a change in the amount of power used from the start of operation of the heating device 2 when the duct fan 5 is not operated. As shown in FIG. 4, when the duct fan 5 is not operated, the heating device 2 performs an initial operation such as a defrosting operation immediately after the start of operation, and then performs a large power consumption near the maximum power. Heating of the first space 10 is started. That is, the heating device 2 warms the air in the first space 10 with a capacity close to the maximum heating capacity. When the room temperature approaches the set temperature of the heating device 2, the power consumption is reduced and the operation is continued with, for example, about half the rated power. At this time, the heating device 2 warms the air in the first space 10 with a small heating capacity so that the room temperature of the first space 10 is stabilized.

  On the other hand, in the graph of FIG. 4, the broken line indicates the change in the amount of power used by the heating device 2 when the duct fan 5 is operated based on the above-described process. After a while from the start of operation of the heating device 2, when the room temperature of the first space 10 approaches a stable state, that is, as described above, the room temperature fluctuation width of the first space 10 for 10 minutes was within 1 degree. In this case, the operation of the duct fan 5 is started by the control unit 4. When the duct fan 5 is operated, warm air flows from the first space 10 to the second space 20, so that the temperature of the first space 10 starts to decrease, and the temperature decrease of the first space 10 is prevented. The heating device 2 starts to warm the air in the first space 10 with a large heating capacity by increasing the power consumption. Thus, the heating device 2 continues heating with a relatively large amount of power consumption, for example, about rated power while the duct fan 5 is operating.

  As shown in FIG. 5, the energy consumption efficiency of the heating device 2 is relatively low when the power consumption of the heating device 2 is low and the heating power is low. On the other hand, the energy consumption efficiency of the heating device 2 is most improved when the power consumption is high near the rated power and the heating capacity is high. Therefore, by controlling the duct fan 5 as described above, the heating device 2 can be operated with the most energy-efficient heating capacity close to the rated power, so that heating can be performed efficiently.

  In particular, according to the air conditioning system 1 of the present embodiment, the heating requirement is determined only by the room temperature information of the first space 10 and the second space 20 measured by the first room temperature sensor 11 and the second room temperature sensor 21. Since it is possible to determine the heating surplus condition, the heating limit condition, and the heating unnecessary condition, the air conditioning system according to the present embodiment can be used without using the special heating apparatus 2 and using the commercially available general heating apparatus 2. 1 can be realized, and the introduction cost can be kept low. Moreover, since the duct fan 5 is controlled only by the information on the room temperature of the first space 10 and the second space 20, for example, the first space 10 is heated by combining two or more different heating devices 2. Even in such a case, the air conditioning system 1 can be efficiently heated.

  Note that the number of the second space 20 to which warm air is sent from the first space 10 by the duct fan 5 is not limited to one. For example, as shown in FIG. 6, the first space 10 may communicate with the two second spaces 20 a and 20 b via the ventilation duct 3. A duct fan 5 is provided in each of the ventilation ducts 3, and the operation of these duct fans 5 is controlled by the control unit 4. The second room temperature sensor 21 is also installed in each of the two second spaces 20a and 20b. In such a case, when the priority order of heating is determined in the two second spaces 20a and 20b and the remaining heating power condition is satisfied, the second space 20a having a higher priority level is the heating requirement. If this heating requirement is satisfied, the duct fan 5a on the side of the ventilation duct 3 communicating with the second space 20a having a higher priority is operated. When the second space 20a having a higher priority does not satisfy the heating requirement, it is determined whether the second space 20b having the lower priority satisfies the heating requirement, and the heating requirement is satisfied. In addition, the duct fan 5b on the side of the ventilation duct 3 communicating with the second space 20b having a low priority is operated.

[Second Embodiment]
Next, 2nd Embodiment of the air conditioning system 1 of this invention is described, referring FIG.7 and FIG.8. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. As shown in FIG. 7, in the second embodiment, the first room temperature sensor 11 is not installed in the first space 10 in which the heating device 2 is installed. On the other hand, a current sensor 12 for measuring a current supplied to the heating device 2 is provided on the power cable of the heating device 2. In the present embodiment, the heating device 2 is an air conditioner using a compressor that uses electricity as a power source, or an oil heater or ceramic heater that heats the heat source using electricity. That is, the heating device 2 according to the present embodiment heats the air in the first space 10 by the current supplied through the power cable. In addition, the duct fan 5 installed in the ventilation duct 3 that connects the first space 10 and the second space 20 has, for example, three levels of air supply amount of strong, medium, and weak in addition to the stopped state under the control of the control unit 4. Changes can be made.

  Hereinafter, the control process of the duct fan 5 in the second embodiment will be described with reference to FIG. In the duct fan 5 control process of the present embodiment, first, based on the information from the current sensor 12, it is determined whether or not current is flowing in the power supply circuit of the heating device 2 (S201). If it is determined that no current is flowing (S201: NO), that is, the heating device 2 is not turned on, the operation of the duct fan 5 is stopped (S202), and this process is terminated. Although not shown in the drawings, this process is naturally terminated even when the duct fan 5 is not already in operation.

  And when the electric current is flowing into the power supply circuit of the heating apparatus 2 (S201: YES), based on the information from the temperature sensor of the 2nd space 20, the temperature of the 2nd space 20 is 5 degree | times from target temperature. It is determined whether or not it is lower than this (S203). In the present embodiment, this condition is a heating requirement. The “predetermined third temperature range” in the present invention is 5 degrees in the present embodiment, but is not limited to this. Here, the target temperature is a numerical value set in advance and stored in the ROM or RAM of the control unit 4, and is not particularly limited, but is, for example, 20 degrees. When the temperature is lower than 20 degrees by 5 degrees or more, that is, when the room temperature of the second space 20 is 15 degrees or less, a temperature difference may occur between the first space 10 and the heat shock that may affect the resident. . In this embodiment, since the temperature sensor is not installed in the first space 10, the temperature difference is estimated based on the second room temperature sensor 21 installed in the second space 20. The first room temperature sensor 11 may be installed in the space 10 to determine whether the heating requirement is satisfied based on the actual temperature difference.

  If it is determined that the temperature of the second space 20 is not lower than the target temperature by 5 degrees or more (S203: NO), the second space 20 is considered warm enough not to cause a heat shock. It is determined that it is not satisfied, and the process waits as it is until the second space 20 needs to be heated. On the other hand, if it is determined that the temperature of the second space 20 is lower by 5 degrees or more than the target temperature (S203: YES), then the current flowing through the power supply circuit of the heating device 2 is determined based on the information from the current sensor 12. It is determined whether or not it is half or less of the peak value within a predetermined period (S204). Here, the “predetermined period” is, for example, about the first 10 minutes after the heating apparatus 2 starts operation, and is usually a period in which the heating apparatus 2 is operating with a large heating capacity close to its capacity limit. . Then, the peak value of the current is stored in, for example, the RAM, and is used for the control processing of the transition duct fan 5. When the current flowing through the power supply circuit of the heating device 2 is less than or equal to one half of the peak value within a predetermined period, it can be seen that the heating device 2 is operating with a small heating capacity, so that the heating device 2 has a remaining heating capacity. I know that there is. In this embodiment, this condition is a heating remaining power condition. In addition, in this embodiment, it is set as the case where the heating surplus condition is less than or equal to half of the peak value within a predetermined period of current, but depending on the type of heating, for example, less than or equal to one third of the peak value Other numerical values can also be adopted.

  If it is determined that the current flowing through the power supply circuit of the heating device 2 is not less than half of the peak value within a predetermined period (S204: NO), that is, if it is determined that the heating capacity condition is not satisfied, then 20 minutes or more It is determined whether or not the current flowing through the power supply circuit is maintained at a state equal to or higher than half the peak value (S205). In the present embodiment, this condition corresponds to the heating limit condition. That is, even if 20 minutes or more elapses, even if the heating device 2 continues to operate with a large heating capacity, it does not reach the set temperature of the heating device 2, so it can be seen that there is no room for the heating capacity.

  If it is determined that the current flowing through the power supply circuit for 20 minutes or longer does not maintain a state of more than half of the peak value (S205: NO), for example, although not shown, the process waits for several minutes, and then returns to step S204. Repeat the process. On the other hand, if it is determined that the current flowing through the power circuit for 20 minutes or more maintains a state of 1/2 or more of the peak value (S205: YES), it is then determined whether or not the duct fan 5 is operating (S206). . When the duct fan 5 is operating (S206: YES), the operation level of the duct fan 5 is lowered by 1 (S207). When the duct fan 5 is operated at the lowest operation level “weak”, the operation of the duct fan 5 is stopped. When the operation level of the duct fan 5 is lowered by 1, the process returns to step S204 and is repeated. If it is determined that the duct fan 5 is not in operation (S206: NO), the operation level of the duct fan 5 cannot be lowered, so the process returns to step S204 and the process is repeated.

  In step S204, if it is determined that the current measured by the current sensor 12 is less than half of the peak value, the heating device 2 is operating with a small heating capacity, so it is determined that the remaining heating capacity condition is satisfied. It is determined whether or not the operation level of the duct fan 5 is maximum (S208). As described above, the duct fan 5 of the present embodiment has, for example, three levels of operation levels of “strong”, “medium”, and “weak”, and the operation level is the maximum when operating at “strong”. (S208: YES). If the operation level is the maximum, the operation level cannot be further increased, and thus the process proceeds to step S210 as it is. On the other hand, when the operation level is not maximum, that is, when the duct fan 5 is operating at “medium” or “weak”, or when the duct fan 5 is not operating, the operation level of the duct fan 5 is increased by one. (S209), the process proceeds to step S210. If the duct fan 5 is not in operation, the duct fan 5 is started to operate with “weak”.

  In step S210, based on the information of the second room temperature sensor 21, it is determined whether or not the second space 20 is equal to or higher than the target temperature. For example, when it is 20 degrees or more, it is determined that the temperature is equal to or higher than the target temperature. In the present embodiment, this condition is a heating unnecessary condition. When the temperature of the second space 20 is high to some extent, even if a resident moves from the first space 10 to the second space 20, there is almost no risk of being adversely affected by a heat shock, so heating is not necessary. If it is determined that the temperature is equal to or higher than the target temperature (S210: YES), the duct fan 5 is stopped because there is no need to warm the second space 20 (S211). Then, the room temperature of the second space 20 is continuously monitored, and when the temperature is lower by 2 degrees or more than the target temperature, the process returns to step S201 and the process is repeated. On the other hand, if it is determined that the room temperature of the second space 20 is not equal to or higher than the target temperature (S210: NO), the process returns to step S204 and is repeated.

  As described above, according to the air conditioning system 1 of the present embodiment, the room temperature information of the second space 20 measured by the second room temperature sensor 21 and the current sensor installed between the power source and the heating device 2. Since the duct fan 5 can be controlled by the current measured by the electric current 12, the current sensor 12 is provided between the plug of the heating device 2 and the outlet, and only the second room temperature sensor 21 is provided. The system 1 can be realized, the introduction cost can be kept low, and the state of the heating device 2 is grasped based on the current. Can be controlled.

[Third Embodiment]
Next, a third embodiment of the air conditioning system 1 of the present invention will be described with reference to FIGS. 9 and 10. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. As shown in FIG. 9, in the third embodiment, the first room temperature sensor 11 is not installed in the first space 10 in which the heating device 2 is installed. The control unit 4 is communicably connected to the heating device 2, and has a signal that the heating device 2 has started operation, a signal that the heating device 2 is operating at a reduced speed, and the heating capacity of the heating device 2. A signal indicating that there is a signal, a signal indicating that the heating device 2 has stopped operating, information on the set temperature of the heating device 2, etc. is received from the heating device 2, and the duct fan 5 is controlled based on these information Yes.

  Hereinafter, the control process of the duct fan 5 in the third embodiment will be described with reference to FIG. In the duct fan 5 control process of the present embodiment, first, the control unit 4 determines whether or not the heating device 2 has started a deceleration operation (S301). Specifically, it is determined whether or not the control unit 4 has received a signal indicating that the deceleration operation has started from the heating device 2. Here, the deceleration operation refers to the heating device 2 for stabilizing the room temperature of the first space 10 when the room temperature of the first space 10 measured by the heating device 2 approaches the set temperature of the heating device 2. Driving. In this embodiment, this condition corresponds to a heating remaining power condition.

  If it is determined that the heating device 2 has not started the deceleration operation (S301: NO), the process does not satisfy the heating remaining power condition, and thus the process stands by until the deceleration operation is started. On the other hand, if it is determined that the deceleration operation has been started (S301: YES), is the room temperature of the second space 20 measured by the second room temperature sensor 21 next lower than the set temperature of the heating device 2 by 5 degrees or more? It is determined whether or not (S302). That is, since the room temperature of the first space 10 heated by the heating device 2 should be substantially equal to the set temperature of the heating device 2, the room temperature of the first space and the room temperature of the second space 20 are It is determined whether or not the difference is 5 degrees or more. In this embodiment, this condition is a heating requirement.

  If it is determined that the room temperature of the second space 20 is not lower than the set temperature of the heating device 2 by 5 degrees or more (S302: NO), it is not necessary to heat the second space 20, so the duct fan 5 is not operated. Wait as it is. On the other hand, when it is determined that the room temperature of the second space 20 is lower by 5 degrees or more than the set temperature of the heating device 2 (S302: YES), the duct fan 5 is operated, and then the heating device 2 is in operation. And it is judged whether the heating apparatus 2 has remaining power (S304). That is, it is determined whether a signal indicating that the heating device 2 has stopped operating has not been received from the heating device 2 and a signal indicating that the heating capacity of the heating device 2 is sufficient is received. In the present embodiment, when the signal indicating that the heating device 2 has sufficient power is not received, that is, NO in step S304 is the heating limit condition.

  If it is determined that the heating device 2 is not in operation or the heating device 2 has no remaining power (S304: NO), the process proceeds to step S306, and the duct fan 5 is stopped. On the other hand, if it is determined that the heating device 2 is in operation and the heating device 2 has a surplus capacity (S304: YES), then the room temperature of the second space 20 measured by the second room temperature sensor 21 is determined. It is determined whether or not the temperature difference from the set temperature of the heating device 2 is within 2 degrees (S305). In the present embodiment, this condition is a heating unnecessary condition. That is, if the difference between the room temperature of the second space 20 and the set temperature of the heating device 2 is within 2 degrees, even if a resident moves from the first space 10 to the second space 20, the body is adversely affected. Since it can be determined that there is no possibility of receiving a certain heat shock, it is determined that the second space 20 does not require heating.

  If it is determined that the temperature difference from the set temperature of the heating device 2 at room temperature in the second space 20 is not within 2 degrees (S305: NO), the process returns to step S304. On the other hand, if it is determined that the temperature difference between the room temperature of the second space 20 and the set temperature of the heating device 2 is within 2 degrees (S305: YES), the second space 20 does not require heating, so the duct The fan 5 is stopped (S306), and after waiting for another 5 minutes (S307), the process returns to step S301.

  As described above, according to the air conditioning system 1 of the present embodiment, the control unit 4 grasps the state of the heating device 2 based on the information transmitted from the heating device 2, and based on the information on the state of the heating device 2, heating is performed. Since the duct fan 5 is controlled by determining the remaining power condition, the heating requirement condition, the heating limit condition, and the heating unnecessary condition, the duct fan 5 can be controlled based on the more accurate state of the heating device 2, and more heating is performed. Efficiency can be increased.

  In the first to third embodiments, numerical values are described for the temperature, the temperature difference, the temperature range, etc., but the present invention is not limited to these, and an appropriate temperature is appropriately set as control of the air conditioning system 1. You can choose. In these embodiments, the numerical values representing temperature, temperature difference, and temperature width are degrees Celsius.

  Needless to say, the embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

  The air conditioning system 1 according to the present invention can be suitably used as, for example, an air conditioning system 1 that heats a plurality of partitioned spaces in a house.

DESCRIPTION OF SYMBOLS 1 Air conditioning system 2 Heating apparatus 3 Ventilation duct 4 Control part 5 Duct fan (air supply means)
7 Exhaust sleeve 8 Introducing sleeve 9 Inlet 10 First space 11 First room temperature sensor 12 Current sensor 20 Second space 21 Second room temperature sensor 30 Third space

Claims (6)

An air conditioning system for a building having a space partitioned by at least two or more,
A first space in which a heating device is installed;
A second space communicated with the first space by a ventilation duct;
An air supply means provided in the ventilation duct, for supplying air from the first space to the second space;
A control unit for controlling the air supply means,
The controller is
At least the air supply when it is determined that both a heating capacity condition indicating that the heating capacity of the heating device has a surplus capacity and a heating requirement condition indicating that the second space needs to be heated are satisfied. While increasing the air supply per unit time of the means,
When it is determined that a heating limit condition indicating that there is no surplus in the heating capacity of the heating device or a heating unnecessary condition indicating that it is not necessary to heat the second space, the air supply means An air conditioning system characterized by reducing an air supply amount per unit time. A first room temperature sensor for measuring the room temperature of the first space; and a second room temperature sensor for measuring the room temperature of the second space;
The controller is
When the fluctuation range of the room temperature of the first space within a predetermined time is within a predetermined temperature fluctuation range set in advance, it is determined that the remaining heating capacity condition is satisfied,
If the room temperature of the first space is higher than the room temperature of the second space by a predetermined first temperature range or more, it is determined that the heating requirement is satisfied,
After increasing the air supply amount per unit time of the air supply means, the room temperature of the first space is lowered, and the heating limit condition is satisfied when there is no recovery tendency within a predetermined set time As well as
When the temperature difference between the room temperature of the first space and the room temperature of the second space is within a second temperature range narrower than the first temperature range, it is determined that the heating unnecessary condition is satisfied. The air conditioning system according to claim 1. The heating device is for heating the first space at least by electricity, and a current sensor for measuring a current supplied from a power source to the heating device;
A second room temperature sensor for measuring the room temperature of the second space,
The controller is
When the current is at least a predetermined rate lower than the peak value within a predetermined period, it is determined that the remaining heating power condition is satisfied,
When the room temperature of the second space is lower than a predetermined target temperature by a predetermined third temperature range or more, it is determined that the heating requirement is satisfied,
When the current is at least a predetermined ratio of the peak value within a predetermined period, when the current is maintained for a predetermined determination period or more, it is determined that the heating limit condition is satisfied,
The air conditioning system according to claim 1, wherein when the room temperature of the second space reaches the target temperature, it is determined that the heating unnecessary condition is satisfied. A second room temperature sensor for measuring a room temperature of the second space;
The control unit can transmit and receive information to and from the heating device,
The control unit
When determining that the heating surplus condition is satisfied when receiving a signal to be transmitted when the heating device is on standby or decelerating,
When the room temperature of the second space is lower than the set temperature received from the heating device by a predetermined width or more, it is determined that the heating requirement is satisfied,
When the heating device receives a signal to be transmitted when there is no heating capacity, it is determined that the heating limit condition is satisfied,
2. The air conditioning system according to claim 1, wherein when the difference between the room temperature of the second space and the set temperature received from the heating device is within a predetermined range, it is determined that the heating unnecessary condition is satisfied. . The second space communicates with an exhaust sleeve that exhausts air to at least a third space partitioned in the building,
The air conditioning according to any one of claims 1 to 4, wherein the third space communicates with an introduction sleeve that introduces air into the first space directly or through another space. system.   The air conditioning system according to claim 5, wherein an end portion of the introduction sleeve on the first space side is close to an air inlet of the heating device.

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