JP4872842B2 - Air conditioning control system - Google Patents

Description

  The present invention relates to an air conditioning control system.

  Conventionally, as an air conditioning control system used for a building having a high ceiling such as a store, a system for controlling the temperature of the room using an air conditioner or a ceiling fan installed on the ceiling of the room has been provided (for example, Patent Document 1). reference).

In the case of an air-conditioning control system installed in a building with a high ceiling, warm air rises and cold air descends, so the temperature tends to be different between the indoor upper area and the lower residential area. During operation, it was difficult to maintain a comfortable temperature in the living area. Therefore, in the air conditioning control system described in the above patent document, the air conditioning control device controls the output of the air conditioning device based on the deviation between the detected value of the in-store temperature and the target temperature, and the upper region and the lower region (residential region). ) And the temperature difference between the upper region and the lower region is generated by the ceiling fan, and the air in the upper region and the air in the lower region are circulated. It was working to reduce the difference.
JP 2001-218367 A

  In the air conditioning control system described above, for example, when the air heated by the air conditioner during heating stays in the upper area and the temperature of the living area does not rise, and the temperature of the living area becomes lower than the target temperature, the air in the upper area is sufficient. Despite being warmed up, the air conditioning control device raises the output of the air conditioning device based on the detected temperature of the in-store temperature, so that the air conditioning device is operated more than necessary and wastes energy. There was a problem. In addition, when the deviation between the temperature of the living area and the temperature of the upper area exceeds a certain temperature, the ceiling fan control device starts the operation of the ceiling fan and sends the air in the upper area downward. As described above, since the air conditioning control device makes the output of the air conditioning device higher than necessary, there is a possibility that the temperature of the living area will rise too much. That is, since the air conditioning control device and the ceiling fan control device individually controlled the operations of the air conditioning device and the ceiling fan, respectively, there was a problem that indoor temperature control was difficult.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an air conditioning control system capable of easily controlling temperature even in a building with a high ceiling and reducing energy consumption of the entire system. There is.

  In order to achieve the above object, the invention according to claim 1 provides a first temperature sensor for measuring the temperature in the upper region in the predetermined space, and the temperature in the upper region is determined based on the measured temperature of the first temperature sensor. An air conditioner that adjusts to an upper target temperature, a blower that generates a vertical air flow in a predetermined space, and a living area where a person is active in an area below the upper area in the predetermined space. A second temperature sensor that measures the temperature; and an interconnection control unit that controls operations of the air conditioner and the blower based on the measured temperatures respectively measured by the first temperature sensor and the second temperature sensor. If the absolute value of the deviation between the measured temperature of the second temperature sensor and the target temperature of the living area is equal to or higher than a predetermined threshold temperature, the interconnection control unit stops the air conditioner and operates the blower, Operate the blower If the second absolute value of the deviation between the target temperature of the measured temperature and the residence area of the temperature sensor threshold temperature or higher when Luo predetermined time has elapsed, characterized in that to operate the air conditioner.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the interconnection control unit sets the target temperature of the living area and the upper target temperature to the same temperature.

  According to the invention of claim 1, when the absolute value of the deviation between the measured temperature of the living area measured by the second temperature sensor and the target temperature of the living area is equal to or higher than a predetermined threshold temperature, the interconnection control unit First, the air conditioner is stopped and the air blower is operated to generate the air flow in the vertical direction. For example, during the heating operation, warm air staying in the upper area is sent to the living area by the air blower. Thus, it is possible to raise the temperature of the living area without operating an air conditioner with high energy consumption. When the absolute value of the deviation between the measured temperature of the first temperature sensor and the target temperature of the living area is equal to or higher than the threshold temperature even when a predetermined time has elapsed since the air blower was activated, the interconnection control unit Since the air conditioner is operated, the air sent from the air conditioner can be controlled to the predetermined target temperature by sending the air sent from the air conditioner to the lower living area. As described above, in the air conditioning control system of the present invention, when the absolute value of the deviation between the measured temperature and the target temperature in the living area is equal to or higher than the threshold temperature, first, the air blower with less energy consumption is operated, and then a predetermined time has elapsed. Even if the absolute value of the deviation is equal to or higher than the threshold temperature, the air conditioner is in operation, and the temperature control is easy even in buildings with high ceilings by operating the air conditioner and the air blower in conjunction. Thus, there is an effect that a system in which energy consumption of the entire system is reduced can be realized.

  According to the invention of claim 2, the interconnection control unit operates the air conditioner and the blower at the same temperature by setting the upper target temperature used for controlling the air conditioner to the same temperature as the target temperature of the living area. It is possible to prevent the wasteful consumption of energy by operating the air conditioner more than necessary.

  Embodiments of the present invention will be described below with reference to the drawings.

  The air conditioning control system of the present embodiment is used for a building with a high ceiling such as a store, for example, and FIG. 1 shows a schematic configuration diagram of the system. The system includes an air conditioner 1 that adjusts the temperature of the upper region to a predetermined upper target temperature, and a ceiling fan 6 that is installed on the ceiling 22 of the room 21 and that generates a vertical air flow. .

  The air conditioner 1 includes an indoor unit 2 installed on a ceiling 22 of a room 21 in a building 20, an outdoor unit 3 installed on the outside of the building 20, and a temperature Tb (° C.) in the vicinity of a suction port included in the indoor unit 2. A temperature sensor 4 (first temperature sensor) for measuring the air temperature, and an air conditioning control unit 5 for controlling the output of the air conditioner 1 based on the measured temperature Tb of the suction port measured by the temperature sensor 4.

  Further, on the wall in the room 21, a setting unit 8 for setting the target temperature and operating conditions of the ceiling fan 6 (for example, the heater operates below the target temperature during heating and stops at the target temperature or higher), and the like. A temperature sensor 9 (second temperature sensor) for measuring a temperature Ta (° C.) of a lower area (hereinafter referred to as a living area) in which a person mainly operates in the room 21 (predetermined space) is provided. A setting operation unit 7 is installed. The ceiling fan control unit 10 controls on / off of the ceiling fan 6 based on the setting contents of the setting operation unit 7 and the measured temperature Ta, and the interconnection control unit 11 performs air conditioning. The air conditioner 1 and the ceiling fan 6 are linked and operated using the control unit 5 and the ceiling fan control unit 10.

  The air conditioning controller 5 controls the output of the air conditioner 1 according to the deviation between the measured temperature Tb in the upper region measured by the temperature sensor 4 and a predetermined target temperature (upper target temperature) Ty (° C.). When the measured temperature Tb of the temperature sensor 4 is transmitted to the interconnection control unit 11 and a control command is received from the interconnection control unit 11, the control command is prioritized to control the operation of the air conditioner 1.

  The ceiling fan control unit 10 takes in the measurement temperature Ta of the living area from the temperature sensor 9 provided in the setting operation device 7 and also sets various setting information (for example, the target temperature Tx (° C.) of the living area) set by the setting unit 8. And the operating conditions are transmitted, and the measured temperature Ta and setting information are transmitted to the interconnection control unit 11. The ceiling fan control unit 10 controls the on / off of the ceiling fan 6 based on the deviation between the target temperature Tx of the living area and the measured temperature Ta, and when a control command is input from the interconnection control unit 11. The on / off of the ceiling fan 6 is controlled with priority given to this control command.

  FIG. 2 is a schematic block diagram of the interconnection control unit 11. The communication units 13 and 14 that exchange signals between the CPU 12, the air conditioning control unit 5, and the ceiling fan control unit 10, and the communication unit 13, respectively. An upper region temperature acquisition unit 15 that acquires a measurement temperature Tb of the upper region measured by the temperature sensor 4 via, and a living region that acquires the measurement temperature Ta of the living region measured by the temperature sensor 9 via the communication unit 14 A temperature acquisition unit 16, a setting information acquisition unit 17 that acquires setting contents set by the setting unit 8 via the communication unit 14, and a timer 18 are provided as main components.

  In the CPU 12 of the interconnection control unit 11, the target temperature Tx acquired from the setting information acquisition unit 17, the measured temperature Tb of the upper region acquired by the upper region temperature acquisition unit 15, and the living region acquired by the living region temperature acquisition unit 16. Based on the measured temperature Ta, the operations of the air conditioner 1 and the ceiling fan 6 are connected and controlled. Hereinafter, the interconnection control operation by the CPU 12 will be described taking heating as an example.

  In this system, the air conditioning control unit 5 and the ceiling fan control unit 10 control the operations of the air conditioner 1 and the ceiling fan 6 based on the measured temperatures of the separate temperature sensors 4 and 9, respectively. When the target temperature Tx and operation conditions of the ceiling fan control unit 10 are acquired from the setting information acquisition unit 17, the target temperature Tx and operation conditions are transmitted from the communication unit 13 to the air conditioning control unit 5, and the memory of the air conditioning control unit 5 is obtained. (Not shown) is stored as the target temperature Ty. In general, the target temperature Ty set in the air conditioner 1 is set to a temperature higher than the target temperature Tx set in the ceiling fan control unit 10, so that the target temperature Tx and operation set in the ceiling fan control unit 10 are set. By setting the conditions in the air conditioning control unit 5, the output of the air conditioner 1 is suppressed, and energy consumption can be reduced.

  The CPU 10 takes in the measurement temperature Ta of the living area using the living area temperature acquisition unit 16 at regular time intervals, and the absolute value of the deviation between the measurement temperature Ta of the living area and the target temperature Tx is a predetermined threshold temperature Tth. If it is less than (| Ta−Tx | <Tth), the control command is not output to the air conditioning control unit 5 and the ceiling fan control unit 10, and the air conditioning control unit 5 and the ceiling fan control unit 10 are respectively temperature sensors 4 and 4. The operations of the air conditioner 1 and the ceiling fan 6 are individually controlled based on the detection result 9. That is, the air conditioning control unit 5 controls the output of the air conditioner 1 according to the deviation between the measured temperature Tb in the upper region measured by the temperature sensor 4 and the target temperature Ty. The ceiling fan control unit 10 controls on / off of the ceiling fan 6 based on the temperature Ta of the living area measured by the temperature sensor 9 and the target temperature Tx. The fan 6 is stopped.

  Thus, when the absolute value of the deviation between the measured temperature Ta of the living area and the target temperature Tx is less than the threshold temperature Tth, the air conditioner 1 and the ceiling fan 6 operate separately, and the indoor unit 2 blows out during heating. While warm air is discharged from the mouth and the ceiling fan 6 generates a vertical air flow, warm air in the upper region is sent to the living region, and the temperature of the living region can be increased. Moreover, at the time of air_conditioning | cooling, while a cold wind is discharged from the blower outlet of the indoor unit 2, the ceiling fan 6 produces | generates the flow of an up-down direction air, and can reduce the temperature of a living area in a short time.

  In such a state where the operations of the air conditioner 1 and the ceiling fan 6 are separately controlled, for example, the air sent from the air conditioner 1 stays in the upper area, and the temperature of the living area and the target temperature When the absolute value of the deviation between the measured temperature Ta of the living area and the target temperature Tx captured by the living area temperature acquisition unit 16 at regular intervals becomes equal to or higher than the threshold temperature Tth, the CPU 12 Then, a control command for stopping the air conditioner 1 is transmitted from the communication unit 13 to the air conditioning control unit 5, the air conditioning control unit 5 stops the air conditioner 1, and the ceiling from the communication unit 14 to the ceiling fan control unit 10. A control command for turning on the fan 6 is transmitted, the ceiling fan control unit 10 turns on the ceiling fan 6, and the timer 18 starts a time limit operation for a predetermined time. At this time, a vertical air flow is generated by the ceiling fan 6. For example, when warm air discharged from the air outlet of the air conditioner 1 remains in the upper region during heating, By sending it to the area, the temperature of the living area can be raised.

  Thereafter, when the time limit operation for a predetermined time by the timer 18 is finished, the CPU 12 takes in the measured temperature Ta of the living area using the living area temperature acquisition unit 16, and the absolute value of the deviation between the measured temperature Ta and the target temperature Tx. A value (| Ta−Tx |) is obtained. At this time, if the absolute value of the deviation between the measured temperature Ta and the target temperature Tx is less than the threshold temperature Tth (| Ta−Tx | <Tth), the CPU 12 determines that the warm air in the upper area is the lower living area. It is determined that the temperature of the living area has risen, and a control command indicating the end of the interconnection operation is transmitted to the air conditioning control unit 5 and the ceiling fan control unit 10, and the air conditioning control unit 5 and the ceiling fan control unit 10 are transmitted. Thus, the air conditioner 1 and the ceiling fan 6 are controlled separately.

  On the other hand, when the time limit operation of the timer 18 ends, if the absolute value of the deviation between the measured temperature Ta and the target temperature Tx is equal to or higher than the threshold temperature Tth (| Ta−Tx | ≧ Tth), the CPU 12 6, it is determined that the temperature of the living area has not increased even if the air in the upper area is sent to the lower living area, and a control command for starting the operation of the air conditioner 1 is transmitted from the communication unit 13 to the air conditioning control unit 5. The operation of the air conditioner 1 is started by the air conditioning controller 5. At this time, the air conditioning control unit 5 controls the output of the air conditioner 1 based on the deviation between the measured temperature in the upper region measured by the temperature sensor 4 and the target temperature Ty (= Tx). The warm air sent from the outlet of the device 1 is sent to the lower living area by the ceiling fan 6, so that the temperature of the living area rises and the temperature of the living area can be brought close to the target temperature. Moreover, at the time of air_conditioning | cooling, while a cold wind is discharged from the blower outlet of the indoor unit 2, the ceiling fan 6 produces | generates the flow of an up-down direction air, and can reduce the temperature of a living area in a short time.

  After that, the CPU 12 takes in the measurement temperature Ta of the living area using the living area temperature acquisition unit 16 at regular time intervals, and the absolute value of the deviation between the measurement temperature Ta of the living area and the target temperature Tx is a predetermined threshold temperature. When it becomes less than Tth (| Ta−Tx | <Tth), a control command indicating the end of the interconnection control is transmitted to the air conditioning control unit 5 and the ceiling fan control unit 10. The fan control unit 10 controls the air conditioner 1 and the ceiling fan 6 separately.

  In this embodiment, the CPU 12 starts the operation of the air conditioner 1 if the temperature deviation is equal to or greater than the threshold temperature at the time when the time limit operation of the timer 18 is completed. However, the output of the air conditioner 1 at this time is The air conditioning control unit 5 may determine the deviation based on the deviation between the measured temperature Tb and the target temperature Ty, or the CPU 12 may cause the air conditioning control unit 5 to gradually increase the output of the air conditioning device 1. The temperature of the living area can be raised in a short time by gradually increasing the output of the air conditioner 1 as time elapses from the start of operation. As a method for increasing the output of the air conditioner 1, the output may be increased by proportional control such that the output increases in proportion to the elapsed time from the start of operation, or the elapsed time from the start of operation. The output may be increased by integral control such that the output increases in proportion to the integration.

  As described above, according to the present system, when the absolute value of the deviation between the measured temperature Ta of the living area measured by the temperature sensor 4 and the target temperature Tx of the living area is equal to or higher than the predetermined threshold temperature Tth, the interconnection is performed. First, the control unit 11 stops the air conditioner 1 and operates the ceiling fan 6 to generate the air flow in the vertical direction. For example, during the heating operation, the control unit 11 removes the warm air remaining in the upper region from the ceiling. By sending the air to the living area by the fan 6, the temperature of the living area can be raised without operating the air conditioner 1 with high energy consumption. When the absolute value of the deviation between the measured temperature Ta of the temperature sensor 4 and the target temperature Tx of the living area is equal to or higher than the threshold temperature Tth even when a predetermined time has elapsed after the blower 6 is operated, the interconnection is performed. Since the control unit 11 operates the air conditioner 1, the temperature in the living area is controlled to the predetermined target temperature Tx by sending the air sent from the air conditioner 1 to the lower living area by the ceiling fan 6. be able to. As described above, in the present system, when the absolute value of the deviation between the measured temperature Ta of the living area and the target temperature Tx is equal to or higher than the threshold temperature Tth, first, the air blower (ceiling fan 6) with low energy consumption is operated, and then predetermined If the absolute value of the deviation is equal to or higher than the threshold temperature Tth even when the time has elapsed, the air conditioner 1 is in operation, and the air conditioner 1 and the blower (ceiling fan 6) are operated in a linked manner. Therefore, it is possible to realize a system that can easily control the temperature even in a building with a high ceiling and can reduce energy consumption of the entire system. Moreover, since the connection control part 11 has set the upper target temperature Ty used for control of the air conditioner 1 to the same temperature as the target temperature Tx of a living area, the air conditioner 1 and the ceiling fan 6 are operated at the same temperature. It is possible to prevent the air conditioner 1 from operating more than necessary and consuming energy wastefully.

  In the above-described embodiment, the case where the target temperature in the upper region is fixedly set to a predetermined temperature with respect to the air conditioning control unit 5 has been described. A wireless signal transmitter (not shown) for receiving a signal is provided, and a wireless transmitter 19 having an operation button 19a for setting a target temperature and transmitting a setting signal according to the operation of the operation button 19a by a wireless signal is provided. It is also possible to change the target temperature Ty of the air conditioner 1 by a user operation.

  In this case, since the target temperature Tx at which the ceiling fan 6 starts to operate and the target temperature Ty of the air conditioner 1 are different, the ceiling fan 6 operates depending on the setting of the target temperature (for example, the target temperature Tx> Ty during heating). In some cases, the air conditioner 1 may start operating before the air conditioner is overheated, and the air conditioner 1 may be overheated, and the effect of reducing energy consumption in the entire system may not be sufficiently obtained.

  Therefore, in the present embodiment, it is also preferable to add an output suppression function for suppressing temperature control by the air conditioning control unit 5 to the interconnection control unit 11, so that the CPU 12 of the interconnection control unit 11 can control the temperature sensor 9 in the living area. Based on the deviation between the measured temperature Ta and the set temperature Tx set in the ceiling fan control unit 10, a level for limiting the output of the air conditioner 1 (hereinafter referred to as an output suppression level) is set in the air conditioning control unit 5. By doing so, overheating or overcooling can be suppressed. The outdoor unit 3 is provided with a heat exchange unit (not shown) that performs heat exchange in accordance with a control signal from the air conditioning control unit 5, and an output level in accordance with an output suppression command from the air conditioning control unit 5. Can be adjusted between the minimum level Min and the maximum level Max. FIG. 3 shows the relationship between the deviation Δt between the measured temperature Tb of the temperature sensor 4 and the target temperature Ty and the output level. When the output suppression level is set to the minimum, the output is output in the range where the deviation Δt is less than t1. Limit levels to a minimum. Note that the output is not limited in the range where the deviation Δt is t1 or more.

  For example, when the measured temperature Ta is higher than the set temperature Tx during heating (Tx−Ta <0), both the heating condition of the ceiling fan 6 and the heating condition of the air conditioner 1 are satisfied. The CPU 12 of the unit 11 outputs a control command for turning off the ceiling fan 6 to the ceiling fan control unit 10 and outputs an output suppression command for setting the output suppression level to the minimum to the air conditioning control unit 5. Set the output to minimum. On the other hand, when the measured temperature Ta is lower than the set temperature Tx during heating (Tx−Ta> 0), both the heating condition of the ceiling fan 6 and the heating condition of the air conditioner 1 are not satisfied. The CPU 12 of the control unit 11 outputs a control command for turning on the ceiling fan 6 to the ceiling fan control unit 10, and obtains an output suppression level by calculation according to the characteristic curves C1 to C3 shown in FIG. A control command for setting the suppression level is output to the air conditioning control unit 5, and the air conditioning control unit 5 can suppress the output of the air conditioner 1.

  The characteristic curve C1 in FIG. 3 is a characteristic curve in which the output level increases linearly from Min to Max in the range of the deviation Δt from 0 to t1, and the output is directly proportional to the magnitude of the deviation Δt. Can do. The characteristic curve C2 is a characteristic curve that suppresses the output level in a range where the deviation Δt is small and increases the output level rapidly when the deviation Δt increases, and the output level is lowered to a certain level until the deviation Δt increases to some extent. By suppressing, energy saving can be achieved. The characteristic curve C3 is a characteristic curve in which the rise of the output level is accelerated. Even if the deviation Δt is small, the output level is increased, so that the energy consumption is slightly increased, but the time to reach the target temperature can be shortened. Such a characteristic curve. Here, the CPU 12 of the interconnection control unit 11 sets the output suppression level of the air conditioning control unit 5 to an arbitrary value in the range of 0 to 100%, but the output suppression level is set to a plurality according to the magnitude of the deviation Δt. It may be possible to change the level to four levels (e.g., four levels of 0, 50, 70, and 100 (%)), and the output suppression level can be easily calculated.

It is a schematic block diagram of the air-conditioning control system of this embodiment. It is a schematic block diagram of the interconnection control part used for the same as the above. It is explanatory drawing explaining the output suppression level same as the above.

Explanation of symbols

1 Air conditioner 4 Temperature sensor (first temperature sensor)
6 Ceiling fan (blower)
9 Temperature sensor (second temperature sensor)
11 Interconnection control unit

Claims (2)

A first temperature sensor for measuring a temperature in an upper region within a predetermined space;
An air conditioner that adjusts the temperature of the upper region to a predetermined upper target temperature based on a temperature measured by a first temperature sensor;
A blower that generates a vertical air flow in the predetermined space;
A second temperature sensor for measuring a temperature in a living area where the person is active in an area below the upper area in the predetermined space;
An interconnection control unit that controls operations of the air conditioner and the blower based on measured temperatures respectively measured by the first temperature sensor and the second temperature sensor;
If the absolute value of the deviation between the measured temperature of the second temperature sensor and the target temperature of the living area is equal to or higher than a predetermined threshold temperature, the interconnection control unit stops the air conditioner and activates the blower In addition, if the absolute value of the deviation between the measured temperature of the second temperature sensor and the target temperature of the living area is equal to or higher than the threshold temperature when a predetermined time has elapsed since the air blower was activated, the air conditioner is activated. An air conditioning control system characterized by   The air conditioning control system according to claim 1, wherein the interconnection control unit sets the target temperature of the living area and the upper target temperature to the same temperature.

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