JP2010190434A - Air conditioner and air conditioning control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide compatibility between comfortableness and energy saving in an air conditioner providing a temperature swing to be temperature change patterns different during temperature rising and temperature dropping. <P>SOLUTION: A variable air volume unit 5 is equipped with a switching means for sequentially switching control of ventilation amounts at predetermined timing so as to repeat a temperature change pattern wherein temperature change of a corresponding zone is asymmetric in temperature rising and in temperature dropping centered on a change point of these, and such that phases of the temperature change patterns are sequentially shifted per each zone. Through before and after switching by the switching means, a total air blowing amount of adding up air blowing amounts from each outlet 4 is retained at a substantially constant without stopping air blowing from each outlet 4 during operation of the air conditioner 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioning apparatus and an air conditioning control method that achieve both comfort and energy saving by swinging indoor temperature up and down.

  Conventionally, an air conditioner that swings temperature so that an indoor temperature change repeats an asymmetric temperature change pattern centering on these change points when the temperature drops and when the temperature rises, such as a sudden drop and a slow rise, and the like Air conditioning control methods are known. In such an air conditioner and an air conditioning control method, by providing the temperature swing as described above, for example, in summer cooling operation, the cool feeling overshoots when suddenly descending, making it feel cooler than the actual temperature, while slowly rising It is known that comfort is improved because sometimes the same cool feeling as room temperature can be obtained.

  For example, in the following Patent Documents 1 and 2, the cooling operation of the air conditioner that is performing the cooling operation so as to keep the room temperature at 26 ° C. from the time t = −30 minutes to t = 0 minutes is periodically performed from the time t = 0 minutes. A control method is disclosed in which the air conditioner is intermittently operated after being stopped for 15 minutes.

  Patent Document 3 below discloses an air conditioning control unit that periodically closes an air supply damper and a return air damper corresponding to each room for a predetermined time and sequentially stops an air conditioning operation for supplying conditioned air to the room. ing.

JP 2005-257270 A JP-A-9-292149 Japanese Patent Laid-Open No. 10-141750

  However, in the air conditioning control methods described in Patent Documents 1 and 2, the air conditioner is periodically turned ON and OFF at regular intervals. In the air conditioning control means described in Patent Document 3, a room air supply damper is used. Since the return air damper is repeatedly opened and closed periodically, the supply of fresh outside air is stopped while the air conditioner is stopped or the supply air damper and the return air damper are closed. As a result of the absence of forced convection and only natural convection, there was a problem that the comfort of the indoor environment was impaired.

  In addition, when the air conditioner is operated to be periodically turned on and off at regular intervals, the air blower power saving effect can be expected while the air conditioner is off, but when the air conditioner is switched on, When the temperature is changed rapidly, the power consumed for drastically lowering the evaporation temperature and chilled water temperature of the refrigerator is increased, resulting in an increase in power consumption of the refrigerator, etc., and sufficient energy saving is not achieved. was there.

  Therefore, the main problem of the present invention is to provide comfort and energy saving in an air-conditioning apparatus and an air-conditioning control method that provide a temperature swing that repeats an asymmetric temperature change pattern around these change points when the temperature rises and when the temperature falls. It is to make sex compatible.

In order to solve the above-mentioned problem, the present invention according to claim 1 is directed to an air supply duct that communicates an air conditioner and an outlet, and the air supply duct is configured in accordance with a set temperature set for each of a plurality of zones. The variable air volume unit capable of adjusting the air flow rate is an air conditioner provided with one or more in each zone,
The variable air volume unit controls the air flow rate so that the temperature change of the corresponding zone repeats a temperature change pattern that is asymmetric around these change points when the temperature rises and when the temperature falls. Switching means for sequentially switching the control of the air flow rate at a predetermined timing so that the phase of the temperature change pattern is sequentially shifted every time;
Before and after switching by the switching means, during the operation of the air conditioner, the total blown amount from the blower outlets is kept almost constant without stopping the blown air from the blower outlets. An air conditioner is provided.

  In the first aspect of the present invention, the temperature change of the corresponding zone is variable in order to give a temperature swing that repeats a temperature change pattern that is asymmetric around these change points when the temperature rises and falls. This is done by controlling the air flow rate of the air volume unit. That is, this air conditioner is provided with one or a plurality of variable airflow units in each zone, and by appropriately adjusting the airflow amount of the variable airflow unit corresponding to one zone, the zone exhibits the above-described temperature swing. It is a thing.

  In addition, the air conditioner has a predetermined amount of air flow rate at a predetermined timing so that the phase of the temperature change pattern is sequentially shifted for each zone with respect to one or more variable air volume units provided for each of the plurality of zones. Switching means for sequentially switching the control is provided. And before and after the switching by the switching means, the total air volume totaled from the air outlets is kept almost constant without stopping the airflow from each air outlet during the operation of the air conditioner. It is controlled so that

  In this way, since the air blowing from each outlet does not stop, the conventional problems of stopping the supply of fresh outside air and reducing comfort due to stagnation of air can be solved. Furthermore, since the air conditioner is not repeatedly turned ON / OFF, the power consumption when switching to ON is eliminated, and energy saving can be realized. For this reason, it becomes possible to provide an air conditioner that achieves both comfort and energy saving.

  As a second aspect of the present invention, the variable airflow unit is configured to set the opening degree to a preset opening degree or fully open when the temperature change of the corresponding zone is a temperature rise or a temperature drop. By using a rapid temperature change pattern and a gradual temperature change pattern that changes the set temperature step by step when the other temperature changes, the temperature change in the corresponding zone changes when the temperature rises and falls. The air conditioner according to claim 1, wherein the air flow rate is controlled so as to repeat a temperature change pattern that is asymmetric about a point.

  The invention described in claim 2 is effective particularly when a rapid temperature change is required at any one of the temperature changes at the time of temperature rise or temperature drop. Specifically, when the one temperature changes, the opening of the variable airflow unit is set to a preset opening or fully opened so that a rapid temperature change pattern occurs, and when the other temperature changes, the set temperature is A gradual temperature change pattern that changes in stages is generated. From the viewpoint of improving comfort due to overshoot, it is preferable that the cooling operation has a rapid temperature change pattern when the temperature drops.

  According to a third aspect of the present invention, the variable airflow unit has a rapid temperature change pattern in which the set temperature is rapidly changed when the temperature change of the corresponding zone is a temperature change at the time of either a temperature rise or a temperature drop. When the other temperature changes, a gradual temperature change pattern that changes the set temperature step by step makes the temperature change of the corresponding zone asymmetric around these change points when the temperature rises and falls The air conditioning apparatus according to claim 1, wherein the air flow rate is controlled so as to repeat the temperature change pattern.

  In the invention described in claim 3, the temperature change required at the time of temperature change at the time of either temperature rise or temperature drop is not as high as that of the invention of claim 2, but a rapid temperature change is required. It is effective for. Specifically, when the one temperature changes, a rapid temperature change pattern in which the set temperature is changed abruptly occurs, and when the other temperature changes, the set temperature is the same as in the second aspect of the invention. A gradual temperature change pattern is generated that gradually changes.

  As a fourth aspect of the present invention, the switching means has passed at least a time that satisfies at least the set temperature at the time of the one temperature change so that the phase of the temperature change pattern is sequentially shifted for each zone. The air conditioner according to any one of claims 2 and 3, wherein the control of the air flow rate of the variable air flow unit is sequentially switched at the timing.

  The invention according to claim 4 defines the “predetermined timing” for switching the control of the air flow rate of the variable air volume unit by the switching means in the air conditioner according to claims 2 and 3. That is, the switching means switches at a timing when a time equal to or more than a time that satisfies at least the set temperature has elapsed when the one temperature changes. Here, “at least a time that satisfies the set temperature” is a time determined by the load characteristics of each zone, and a time that satisfies the set temperature of each zone can be set in advance. It is preferable to determine each time according to the temperature measurement result of each zone.

  As the present invention according to claim 5, there is provided an air conditioner according to any one of claims 1 to 4, wherein one or a plurality of the variable airflow units are provided in each of a plurality of partitioned zones.

  As the present invention according to claim 6, there is provided the air conditioner according to any one of claims 1 to 4, wherein one or a plurality of the variable airflow units are provided in a plurality of zones in which one space is virtually divided. The

  The inventions according to claims 5 and 6 define the forms of a plurality of zones to be air-conditioned, and this air conditioner is provided with one or a plurality of variable airflow units in each of the partitioned zones. Even in this case, it is possible to cope with a case where one or a plurality of the variable airflow units are provided in a plurality of zones in which one space is virtually divided.

As the present invention according to claim 7, for the air supply duct that communicates between the air conditioner and the air outlet, the air flow rate of the air supply duct can be adjusted according to the set temperature set for each of a plurality of zones. An air conditioning control method in an air conditioner having one or more air volume units in each zone,
The air flow rate of the variable air volume unit is controlled so that the temperature change pattern of the corresponding zone is asymmetrical around these change points when the temperature rises and when the temperature falls. The control of the air flow rate of the variable air volume unit is sequentially switched at a predetermined timing so that the phase of the temperature change pattern is sequentially shifted,
The air-conditioning control is characterized in that the air flow control from the air outlets is controlled so as to keep the total air flow rate from the air outlets substantially constant without stopping the air flow from the air outlets during the operation of the air conditioner. A method is provided.

  As described above in detail, according to the present invention, in the air conditioning apparatus and the air conditioning control method for providing a temperature swing that repeats an asymmetric temperature change pattern around these change points at the time of temperature rise and temperature fall, comfort is provided. In addition, energy saving can be achieved.

It is a top view of the air-conditioning object space provided with the air conditioner 1 which concerns on this invention. It is sectional drawing (the 1) of each zone provided with the air conditioner. It is sectional drawing (the 2) of each zone provided with the air conditioner. It is a time series diagram which shows the setting state of each zone by a 1st control system. It is a flowchart which shows the setting state by a 1st control system. It is a time-sequential diagram of room temperature when the air conditioner 1 is operated. It is a time series diagram which shows the setting state of each zone by a 2nd control system. It is a flowchart which shows the setting state by a 2nd control system. It is a time-sequential diagram of a thermal feeling at the time of giving a temperature swing. It is a distribution diagram of active comfort at the time of temperature rise and temperature fall at a temperature swing width of ± 3.5 ° C. It is a distribution diagram of positive comfort when the temperature rises and falls when the temperature swing width is ± 1.7 ° C.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing an air conditioner 1 according to the present invention.

  The air conditioner 1 according to the present invention includes air conditioners 21 and 22, an air outlet 4 for blowing out conditioned air to each zone, an air supply duct 3 that communicates the air conditioners 21 and 22 and the air outlet 4, and Each zone is provided with one or a plurality of variable air volume units 5 that can adjust the air flow rate of the air supply duct 3 in accordance with the set temperature set for each zone with respect to the air supply duct 3. Yes.

  As the variable air volume unit 5, a VAV unit in which the air flow volume of air passing at a constant temperature can be adjusted by adjusting the damper opening degree can be used.

FIG. 2 is a cross-sectional view when the air conditioner 1 is applied to four partitioned independent zones R ₁ , R ₂ , R ₃ , R ₄ . In the illustrated example, each zone R ₁ , R ₂ , R ₃ , R ₄ has a plurality of outlets 4 ₁ , 4 ₂ , 4 ₃ , 4 _4, and variable air volume units 5 ₁ , 5 ₂ ,. 5 ₃ ..., 5 ₄ ... Are provided, and a plurality of outlets (for example, 4 ₁ ...) Are provided for one variable airflow unit (for example, 5 ₁ ). The variable air volume unit includes a plurality of variable air volume unit provided to one zone (e.g., 5 ₁₎ (e.g., 5 ₁ ...) are integrally controlled. In addition, the said blower outlet and the variable air volume unit may be provided one each in each zone, and one blower outlet may be provided in one variable air volume unit.

On the other hand, FIG. 3 is a cross-sectional view when the air conditioner 1 is applied to _four zones R ₁ , R ₂ , R ₃ , R _{4 in} which one air-conditioning target space R is virtually divided. In the illustrated example, a plurality of air outlets each having a variable air volume unit are provided in each zone. However, as described above, one or more air outlets can be provided in each zone.

The variable air volume unit 5 controls the air flow volume so that the temperature change of the corresponding zone repeats a temperature change pattern that is asymmetric around these change points when the temperature rises and when the temperature falls. That is, in the example shown in FIGS. 2 and 3, by appropriately adjusting the air flow rate of a plurality of variable air volume units (for example, 5 ₁ ...) Provided in one zone (for example, R ₁ ), the zone R ₁ The room temperature is controlled to show the temperature swing as described above.

Further, the variable airflow units 5 ₁ , 5 ₂ , 5 ₃ , 5 _4, ... Are arranged so that the phase of the temperature change pattern is sequentially shifted for each zone R ₁ , R ₂ , R ₃ , R ₄ . There is provided switching means (not shown) for sequentially switching the control of the ventilation rate at a predetermined timing.

In the present air conditioner 1, before and after switching by the switching means, during the operation of the air conditioner 1, air blowing from each of the outlets 4 ₁ , 4 ₂ , 4 ₃ , 4 _4, ... is not stopped, The total amount of air blown from the air outlets 4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ ... Is kept substantially constant (“R _{1 to} R _{4 in} FIG. 4). (See “Total”).

As described above, since the air blowing from each of the outlets 4 ₁ to 4 ₄ does not stop, the problem of the decrease in comfort due to the stop of the supply of fresh outside air or the stagnation of air as in the past can be solved. Furthermore, since the air conditioner is not repeatedly turned on and off as in the prior art, the power consumption when switching to the on state is eliminated and energy saving can be realized. For this reason, it becomes possible to provide the air conditioner 1 that achieves both comfort and energy saving.

  The switching means is provided in the air conditioners 21 and 22 or a separately provided control device (not shown) or the like, and is based on a temperature measured by a temperature measuring device provided appropriately in a room based on a predetermined elapsed time. What comprises a control part which controls the damper opening degree of a variable air volume unit and a transmission part which transmits a control signal from the control part to each variable air volume unit can be used.

  The following two methods will be described in detail as examples of the method for controlling the air flow rate by the switching means.

  First, the first control method will be described with reference to FIGS. FIG. 4 is a time-series diagram of the damper opening degree of the variable air volume unit 5 provided in each zone, and FIG. 5 is a block diagram showing an operation procedure. “Air volume ratio” in the figure is the ratio (%) of the air flow when the air flow when the damper is fully opened is 100.

  In the first control method, the variable air volume unit 5 is configured to rapidly change the opening degree to a preset opening degree or fully open when the temperature change of the corresponding zone is either a temperature rise or a temperature drop. By using a temperature change pattern and a gentle temperature change pattern that changes the set temperature step by step when the other temperature changes, the temperature change of the corresponding zone will change between when the temperature rises and when the temperature falls. The ventilation rate is controlled so as to repeat an asymmetric temperature change pattern at the center.

  In other words, the first control method is an effective control method when particularly a rapid temperature change is required when the temperature decreases during the cooling operation and when the temperature increases during the heating operation.

Specifically, the cooling operation will be described in detail as an example. In one zone (for example, R ₁ ), the variable air volume unit 5 ₁ corresponding to the zone R ₁ is a zone so that the temperature change in the room falls. The set temperature of R ₁ is set to 26 ° C., the damper opening is set to A setting to fully open (air flow ratio 100%), and the temperature change in the room is rapidly lowered. As a result, the cooling sensation overshoots and a cooling sensation can be generated above the actual temperature. Thereafter, at a predetermined timing (time M1), the variable airflow unit 5 ₁ ... Has a set temperature of the zone R ₁ of 27.5 ° C. and a damper opening of 72.7% so that the temperature change in the room rises. Is set to D setting, and at a predetermined timing (time M2), the set temperature is set to 29 ° C. and the damper opening is 66.7%, and further at a predetermined timing (time M3), Set to the same B setting as the C setting. In this way, by changing the set temperature stepwise, a temperature change pattern in which the indoor temperature gradually rises can be obtained. When the room temperature slowly rises due to each setting of D → C → B, the same cool feeling as room temperature can be obtained. Thereafter, at a predetermined timing (time M4), the temperature change is suddenly lowered by switching to the A setting. As a result, as shown in FIG. 6, a temperature change pattern that is asymmetric with respect to these change points is repeated when the temperature rises and when the temperature falls. In the other zones R _{2 to} R ₄ , the air flow rate of the variable air volume unit 5 corresponding to each zone is controlled so that the same temperature change pattern is repeated. Then, as shown in FIG. 4, control is performed so that the phase of the temperature change pattern is sequentially shifted for each of the zones R _{1 to} R ₄ .

  The switching timing of the variable air volume unit 5 by the switching means is at least at the time of the one temperature change, in the example shown in FIG. 4 at the time of the temperature drop, so that the phase of the temperature change pattern is sequentially shifted for each zone. It is set as the timing when the time more than the time which satisfies preset temperature (26 degreeC of the said A setting) passed. This “time longer than the time that satisfies the set temperature” is a time determined by the load characteristics of each zone, and a time that satisfies the set temperature of each zone can be set in advance. It is preferable to determine according to the temperature measurement result of each zone. Note that at the end of this time, the room temperature may become the set temperature (26 ° C.) or less.

In the example shown in FIG. 4, in one period from time t to 0 to M4, this period is divided into four unit times, and in the unit time from t to 0 to M1, zone R ₁ is set to the time of temperature decrease. , t is the time in zone _{R 2} temperature lowering M1 and M2, that t is the zone _{R 3} in M2~M3 is that during temperature decrease, t zones _{R 4} in M3~M4 is a time temperature decrease Thus, the phase of the temperature change pattern is controlled to be sequentially shifted for each zone. When the temperature rises after the time unit when the temperature drops, the set temperature is set to 27.5 ° C. → 29 ° C. → 29 ° C. (the air volume ratio is 72.7% → 66.7% → 66). .7%) and is controlled step by step so that a gradual temperature change pattern is obtained. Here, “changing the set temperature in a stepwise manner” means that in each unit time when the temperature rises, the set temperature need not be lowered from the immediately preceding unit time, and also includes maintaining the same set temperature. When the A setting and D setting (setting temperatures are 26 ° C. and 27.5 ° C.), the damper opening of the variable air volume unit 5 is controlled centrally, and the B setting and C setting (each setting temperature is 29 ° C.) At this time, the damper opening degree of the variable air volume unit 5 is preferably individually controlled.

4 and 5, the setting contents of A setting, B setting, C setting, and D setting in each unit time are summarized as follows.
A setting (during temperature drop): 100% air volume ratio (damper fully open, set temperature 26 ° C)
B setting (when temperature rises): Setting temperature 29 ° C, air volume ratio 66.7%
C setting (when temperature rises): set temperature 29 ° C, air volume ratio 66.7%
D setting (when temperature rises): set temperature 27.5 ° C, air volume ratio 72.7%
Then, as shown in FIG. 5, when the time t becomes M4, the parameter time t is reset to 0, and the control of the next cycle (time t is 0 'to M4') is performed in the same manner. Be started. Thus, in this air conditioner 1, the air blowing from each of the outlets 4 ₁ to 4 ₄ is not stopped during the operation of the air conditioner 1 before and after switching by the switching means.

In addition, as shown in the stage of “total of R _{1 to} R ₄ ” in FIG. 4, the total blown amount obtained by summing the blown amount from each of the outlets 4 ₁ to ₄ 4 before and after switching by the switching unit. Is held almost constant.

  Next, the second control method will be described with reference to FIGS.

  In the second control method, the variable airflow unit 5 has a rapid temperature change pattern for rapidly changing the set temperature when the temperature change of the corresponding zone is either a temperature rise or a temperature fall. When the other temperature changes, a gradual temperature change pattern in which the set temperature is changed step by step makes the temperature change of the corresponding zone asymmetrical around these change points when the temperature rises and when the temperature falls. The ventilation rate is controlled so as to repeat the temperature change pattern.

  That is, the second control method requires a rapid temperature change to some extent, although a temperature change is not as rapid as the first control method when the temperature is lowered in the cooling operation and when the temperature is increased in the heating operation. It is effective when As described above, the second control method is different from the first control method in the setting method at the time of temperature drop in the cooling operation and at the time of temperature rise in the heating operation.

  Specifically, the cooling operation will be described as an example. When the temperature drops, a rapid temperature change pattern is set by rapidly setting a lower set temperature from the previous set temperature (abruptly increasing the flow rate of the variable air volume unit). When the temperature rises, as in the first control method described above, when the temperature rises, by setting a gradual temperature change pattern in which the set temperature is raised stepwise (the flow rate of the variable airflow unit is lowered stepwise). The temperature change pattern is controlled so as to be asymmetric with respect to these change points as the temperature drops.

Thus, in the second control method, the following A ′ setting is used instead of the A setting, as compared with the first control method.
A 'setting (when temperature drops): set temperature 26 ° C, air volume ratio 80.0%
Thus, in each zone, by rapidly lowering the set temperature from the previous 29 ° C. to 26 ° C. (by rapidly increasing the air flow ratio from 66.7% to 80.0%) A temperature change pattern is formed.

  By the way, the influence which the above-mentioned temperature swing has on comfort will be considered based on FIGS. FIG. 9 is a time-series diagram of the thermal sensation when a temperature swing is given during cooling operation, FIG. 10 is a comfort distribution diagram when the temperature rises and falls when the temperature swing width is ± 3.5 ° C. These are distribution diagrams of comfort when the temperature rises and falls when the temperature swing width is ± 1.7 ° C. Here, “aggressive comfort” in FIGS. 10 and 11 quantifies the degree of aggressive comfort that the subject feels “comfortable” and “comfortable”. For example, the subject is asked about the thermal environment of the room. It can be quantified by selecting from “comfortable”, “uncomfortable” and “neither”, and letting the subject who selects “comfortable” and “unpleasant” report the degree in the range of 0-100. For this reason, the positive comfort is different from the passive comfort display that answers the question “Can you accept the current thermal environment?” Used in conventional subject experiments.

  As shown in FIG. 9, when the temperature swing is given, even when the temperature is the same, the thermal feeling when the temperature rises is different from the thermal feeling when the temperature falls, and when the temperature falls, it is cooler than when the temperature rises. Proven to feel.

  10 and 11, when temperature swing is given, even when the temperature is the same, the positive comfort when the temperature rises and the positive comfort when the temperature falls are different, and the positive comfort when the temperature falls The sex is greater than the positive comfort when the temperature rises. The tendency was more remarkable when the temperature swing width was larger (± 3.5 ° C.).

1 ... air conditioner, 21, 22 ... air conditioner, 3 ... air supply ducts, _4.4 1-4 4 _... outlet, _5.5 1-5 4 _... variable air volume _{unit, R} 1 to R 4 _... Zone

Claims (7)

With respect to the air supply duct that communicates between the air conditioner and the air outlet, a variable air volume unit that can adjust the air flow rate of the air supply duct according to the set temperature set for each of the plurality of zones is provided with one or A plurality of air conditioners,
The variable air volume unit controls the air flow rate so that the temperature change of the corresponding zone repeats a temperature change pattern that is asymmetric around these change points when the temperature rises and when the temperature falls. Switching means for sequentially switching the control of the air flow rate at a predetermined timing so that the phase of the temperature change pattern is sequentially shifted every time;
Before and after switching by the switching means, during the operation of the air conditioner, the total blown amount from the blower outlets is kept almost constant without stopping the blown air from the blower outlets. An air conditioner that features.   When the temperature change of the corresponding zone is a temperature change when the temperature rises or falls, the variable air volume unit makes a rapid temperature change pattern with the opening degree set in advance or fully opened, When the temperature changes, a gradual temperature change pattern that changes the set temperature step by step makes the temperature change of the corresponding zone asymmetrical around these change points when the temperature rises and falls The air conditioner according to claim 1, wherein the air flow rate is controlled so as to repeat the pattern.   The variable air volume unit has a rapid temperature change pattern in which the set temperature is rapidly changed when the temperature change of the corresponding zone is either a temperature rise or a temperature fall, and is set when the other temperature change. By adopting a gradual temperature change pattern that changes the temperature stepwise, the temperature change pattern of the corresponding zone becomes asymmetrical around these change points when the temperature rises and when the temperature falls. The air conditioner according to claim 1, wherein the air flow rate is controlled.   The switching means is configured to pass the air flow of the variable airflow unit at a timing when at least a time that satisfies a set temperature at the time of the one temperature change has passed so that the phase of the temperature change pattern is sequentially shifted for each zone. The air conditioner according to claim 2, wherein the amount control is sequentially switched.   The air conditioner according to any one of claims 1 to 4, wherein one or a plurality of the variable airflow units are provided in each of a plurality of partitioned zones.   The air conditioner according to any one of claims 1 to 4, wherein one or a plurality of the variable airflow units are provided in a plurality of zones in which one space is virtually divided. For the air supply duct that communicates between the air conditioner and the air outlet, a variable air volume unit that can adjust the air flow rate of the air supply duct in accordance with the set temperature set for each of the plurality of zones is set to 1 or An air conditioning control method for a plurality of air conditioners,
The air flow rate of the variable air volume unit is controlled so that the temperature change pattern of the corresponding zone is asymmetrical around these change points when the temperature rises and when the temperature falls. The control of the air flow rate of the variable air volume unit is sequentially switched at a predetermined timing so that the phase of the temperature change pattern is sequentially shifted,
The air-conditioning control is characterized in that the air flow control from the air outlets is controlled so as to keep the total air flow rate from the air outlets substantially constant without stopping the air flow from the air outlets during the operation of the air conditioner. Method.

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