JP2005257270A - Air conditioner and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control method of an air conditioner capable of satisfying both energy saving and improvement in comfort. <P>SOLUTION: This control method of the air conditioner comprises periodical stop of the cooling operation of the air conditioner which performs the cooling operation so as to keep room temperature at 26°C from time t=-30 min to t=0 min only for 15 min from the time t=0 min as shown in Fig. (B) to intermittently operate the air conditioner. The period of the stoppage is 45 min as shown in Fig. (B). According to this control method, the 15-min stoppage of cooling operation and the 30-min operation of cooling operation successive to the stopping constitutes one intermittent cycle. Compared with a continuous cooling operation, the energy consumption can be surely reduced without deteriorating the comfort. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner control method and an air conditioner that can save energy without impairing comfort.

  Conventionally, as a control method for an air conditioner, a method of controlling the air conditioner so that the room temperature always becomes a predetermined target temperature is generally used.

By the way, from the viewpoint of energy saving, in the above conventional method, if the target temperature is brought close to the outside air temperature, energy can be saved, but comfort is surely impaired by that amount. Therefore, it is difficult to achieve both energy saving and comfort improvement.
JP 59-147943 A

  Then, the subject of this invention is providing the control method and air conditioner of an air conditioner which can make energy saving and the improvement of comfort compatible.

In order to achieve the above object, an air conditioner control method according to claim 1 of the present invention is a continuous operation state in which the air conditioner is continuously performing an air condition operation so that the temperature of the predetermined space is constant. A step of obtaining a thermal feeling and a comfortable feeling felt by a plurality of persons in the predetermined space;
A feeling of warmth and comfort felt by the plurality of persons in the predetermined space in a state where the air conditioning operation of the air conditioner in the predetermined space is forcibly stopped for a predetermined time and the operation is intermittently performed. Determining in advance the stop time and operation time of the intermittent operation such that the thermal sensation and comfort felt by the plurality of persons in the predetermined space in the continuous operation state are comparable;
Regardless of the temperature of the predetermined space, the step of intermittently operating the air conditioning operation of the air conditioner in the predetermined space according to the obtained stop time and operation time of the intermittent operation,
The plurality of persons in the predetermined space where the air conditioning is performed by the intermittent operation does not feel that the comfort is impaired as compared to the case where the plurality of persons are in the predetermined space in the continuous operation state. It is a feature.

  According to the control method of the first aspect of the present invention, energy can be reliably saved by the amount that the predetermined air-conditioning operation is forcibly stopped for a predetermined stop period regardless of the room temperature. . Moreover, the effect that the room temperature fluctuation by this intermittent operation improves a comfortable feeling can also be expected.

  Therefore, according to the first aspect of the present invention, it is possible to reliably reduce the energy consumption by the stop time without deteriorating the comfort as compared with the continuous air conditioning operation.

  Moreover, the control method of the air conditioner of one Embodiment performs the said intermittent operation | movement of the said air conditioner periodically.

  Therefore, according to the control method of the air conditioner of this embodiment, energy can be reliably saved by the amount that the intermittent operation is periodically performed. Moreover, the effect of improving the feeling of comfort can be expected from a change in room temperature due to this periodic intermittent operation.

  In addition, the air conditioner control method according to an embodiment includes the air conditioner in the predetermined space according to the determined intermittent operation stop time and operation time regardless of the temperature of the predetermined space. Prior to the step of intermittent operation, the air conditioner of the air conditioner is operated for 30 minutes.

  Moreover, the control method of the air conditioner of one Embodiment made the ratio of the said stop time with respect to the sum of the said stop time and the said operation time in the said intermittent operation | movement of the said air conditioner 1/3 or less.

  According to the embodiment, it is possible to reduce energy consumption with almost no decrease in comfort as compared with the continuous air conditioning operation.

  Moreover, the control method of the air conditioner of one Embodiment made the maximum value of the said stop time in the said intermittent operation | movement of the said air conditioner into 15 minutes.

  If the stop time is within 15 minutes, the energy consumption can be reduced to the maximum while minimizing the probability of feeling uncomfortable.

  Moreover, the control method of the air conditioner of one embodiment WHEREIN: The stop of the said air conditioning operation | movement in the said intermittent operation | movement of the said air conditioner is a stop of the ventilation fan of the said air conditioner, The said of the said air conditioner Intermittent operation is realized by turning on and off the blower fan of the air conditioner.

  According to the above-described embodiment, it is possible to make the falling of the stop of the air conditioning operation and the rising of the operation of the air conditioning operation quick. Therefore, intermittent control of the air conditioning operation is facilitated. Further, since only electric system control is required, control cost can be reduced.

  In one embodiment of the air conditioner control method, the stop of the air conditioning operation in the intermittent operation of the air conditioner is a stop of sending of the heat medium to the fan coil unit of the air conditioner. The intermittent operation of the air conditioner is realized by sending and stopping the heat medium to the fan coil unit.

  According to this embodiment, since the delivery of the heat medium is stopped at the time of stop, the amount of reduction in operating energy can be increased.

  In one embodiment of the air conditioner control method, the intermittent operation of the air conditioner is performed by turning on and off the blower fan of the air conditioner and sending and stopping the heat medium to the fan coil unit of the air conditioner. And both.

  According to this embodiment, since both the blower fan and the heat medium delivery are turned off at the time of the stop, the energy saving effect can be maximized.

  An air conditioner according to an embodiment is an air conditioner that performs a control method of the air conditioner, and includes an air conditioner body that performs an air conditioner operation of the predetermined space, and the air of the air conditioner body. And a control unit that forcibly stops the harmonic operation periodically for a predetermined time regardless of the temperature of the predetermined space.

  Therefore, according to this embodiment, the energy consumption can be reliably reduced by the amount of the stop time without impairing the comfort, and the comfort can be improved by the intermittent operation.

  Moreover, the control method of the air conditioner of one embodiment is a method for controlling the temperature of the conditioned air blown from the air conditioner to the predetermined space when the air conditioner operation in the intermittent operation of the air conditioner is a cooling operation. , Set lower than 16 ° C.

  According to this embodiment, the temperature of the conditioned air blown into the room is set lower than 16 ° C. while performing intermittent operation regardless of the room temperature. Therefore, since the amount of conditioned air is smaller than when the temperature of the blown conditioned air is set to a value of 16 ° C. or higher, when sending cool air from the central refrigeration apparatus, a blower fan, The road can be downsized. Moreover, when using a fan coil unit, a refrigerant pipe and a refrigerant pump can be reduced in size. Therefore, the initial cost and running cost of the air conditioner can be reduced.

  Further, it has been experimentally found that no chill occurs even if the temperature of the conditioned air is set lower than 16 ° C. in the forced intermittent operation state. Therefore, according to the invention of claim 10, energy can be saved by forced intermittent operation, and the initial cost and running cost of the air conditioner can be reduced.

  According to the method for controlling an air conditioner of the present invention, energy can be reliably saved by forcibly stopping a predetermined air conditioning operation for a predetermined stop period regardless of the room temperature. Moreover, the effect that the room temperature fluctuation by this intermittent operation improves a comfortable feeling can also be expected.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

[First Embodiment]
The column No. 2 of the summer experiment in FIG. 1 and FIG. 2B show the control contents of the cooling operation in the first embodiment of the control method of the air conditioner of the present invention. In this embodiment, the cooling operation of the air conditioner that is performing the cooling operation so as to maintain the room temperature at 26 ° C. from the time t = −30 minutes to t = 0 minutes is performed from the time t = 0 minutes regardless of the room temperature. The air conditioner is intermittently operated by forcibly stopping it for 15 minutes periodically. As shown in FIG. 2B, the stop period is 45 minutes. Therefore, according to the control method of this embodiment, the cooling operation for 15 minutes and the cooling operation for 30 minutes following the stop constitute one intermittent cycle.

  Here, as indicated by a broken line in FIG. 2B, when the temperature of the inner wall surface of the chamber was constant at 28 ° C., the room temperature changed as indicated by the solid line. The black circle ● represents the operation stop point, and the white circle ○ represents the operation start point.

  On the other hand, as a comparison object with respect to the first embodiment, FIG. 2A shows a state in which the cooling operation is continuously performed so that the room temperature is constant at 26 ° C. as conventional general air conditioning. Show. Here, the temperature of the inner wall of the chamber was set constant at 26 ° C. As another comparison object, FIG. 2C shows a change in room temperature in the case of performing active air conditioning that varies the output of the cooling operation in the process of the conventional continuous operation. According to this active air conditioning, the room temperature is kept at 26 ° C. from time t = −30 minutes to time t = 0 minutes, the room temperature is increased linearly from time t = 0 to time t = 15 minutes, and from time t = 15 minutes. The room temperature was linearly lowered until time t = 22 minutes, and an output cycle of 45 minutes was repeated in which the room temperature was returned to 26 ° C. for 23 minutes from time t = 22 minutes.

  The number of subjects in the driving shown in FIGS. 2 (A), (B), and (C) is 30. 2 (A), (B), and (C), the average of the thermal sensation reported by the subject is calculated as No. 1, No. 2, No. 3 in FIG. The column is indicated by a square mark, and the standard deviation is indicated by a line segment extending vertically from the square mark. As can be seen from FIG. 3, the average value of No. 1 (general air conditioning), the average value of No. 2 (this embodiment), and the average value of No. 3 (active air conditioning) The level is between “normal” and “slightly cool”, and the standard deviation in general air conditioning is better than the difference between the average value in this embodiment and the average value in general air conditioning. large.

  Further, in the driving shown in FIGS. 2 (A), (B), and (C), the average value of the comfort feeling reported by the subject is calculated as No. 1, No. 2, No. 3 in FIG. In this column, square marks are used, and the standard deviation is indicated by line segments extending vertically from the square marks. As can be seen from FIG. 4, the average value of No. 1 (general air conditioning), the average value of No. 2 (this embodiment), and the average value of No. 3 (active air conditioning) are the comfort level. The standard deviation in general air conditioning is much higher than the difference between the average value in this embodiment and the average value in general air conditioning. Big.

  From this result, according to the control method of the first embodiment, the stop time of 15 minutes in the 45-minute intermittent cycle is reduced without reducing the comfort as compared with the continuous cooling operation. The energy consumption can be reliably reduced by the amount.

  As shown in No. 5 of the summer experiment in FIG. 1, in the first embodiment, when the stop time is 10 minutes and the operation time is 40 minutes (stop time rate 20%), As shown in FIG. 3, in the sense of warmth and cold, the average value moved slightly closer to the average value of the general air conditioning of No. 1 as compared with the No. 2 first embodiment. Therefore, as shown in FIG. 4, the feeling of comfort is also improved as compared with the No. 2 embodiment.

  On the other hand, as shown in No. 6 of the summer experiment in FIG. 1, when the operation time is halved to 20 minutes and the stop time is 10 minutes compared to No. 5 in FIG. %), As shown in FIG. 3, the thermal sensation is almost the same as that of the first embodiment of No. 2, and as shown in FIG. Became.

  In addition, as shown in No. 7 of the summer experiment of FIG. 1, in the first embodiment of No. 2, the target indoor temperature during operation is decreased by 1 ° C. from 26 ° C. to 25 ° C., and the inner surface of the wall As shown in FIG. 3, the thermal sensation moved to the cooler side by about one step as compared with No. 2 under the condition that the temperature of was lowered by 1 ° C. from 28 ° C. to 27 ° C. Moreover, as shown in FIG. 4, about a comfortable feeling, it became substantially equivalent to the general air conditioning of No.1.

  Further, as shown in No. 8 of the summer experiment of FIG. 1, in the first embodiment of No. 2, the target indoor temperature during operation is increased by 1 ° C. from 26 ° C. to 27 ° C., and the inner surface of the wall As shown in Fig. 3, the average value moved slightly warmer and slightly changed the "normal" level under the condition where the temperature of the sample was increased by 1 ° C from 28 ° C to 29 ° C, as shown in Fig. 3. Exceeded. On the other hand, as shown in FIG. 4, the feeling of comfort was almost the same as No. 2.

  In addition, as shown in No. 9 of the summer experiment in FIG. 1, compared with No. 2 (stop time rate 33%), the stop time is reduced by 10 minutes to 5 minutes, and the operation time is 5 minutes. When it is reduced to 25 minutes (stop time rate: 16%), the thermal sensation is clearly cooler than No. 2 and slightly lower than No. 1 general air conditioning as shown in FIG. It became cool. Then, as shown in FIG. 4, with respect to the comfort feeling, the comfort feeling is improved to No. 1 and is almost improved to the “comfort” level.

[Second Embodiment]
Next, a second embodiment of the air conditioner control method of the present invention will be described. This second embodiment is shown in FIG. 1 as No. 6 of the winter experiment. In the second embodiment, as shown in FIG. 2D, when the temperature of the inner wall surface of the chamber is constant at 21 ° C., the room temperature is maintained at 24 ° C. from time t = −30 minutes to t = 0 minutes. The air conditioner that is performing heating operation is forcibly stopped for 5 minutes at a period of 30 minutes from time t = 0, regardless of the room temperature, and the air conditioner is intermittently operated. It is what makes it work. Therefore, according to the control method of this embodiment, the 5 minute stop of the heating operation and the 25 minute operation of the heating operation subsequent to the stop constitute one intermittent cycle.

  Here, as indicated by a broken line in FIG. 2D, when the temperature of the inner wall surface of the chamber was constant at 21 ° C., the room temperature changed as indicated by the solid line. The black circle ● indicates the operation stop point, and the white circle ○ indicates the operation start point.

  On the other hand, as a comparison object with respect to the second embodiment, as shown in No. 3 of the winter experiment column of FIG. 1, heating operation from t = −30 minutes to t = 0 minutes in FIG. General air conditioning 3 that is continuously performed is adopted.

  The number of subjects in No. 6 (second embodiment) and No. 3 (general air conditioning 3) of the winter experiment is 30 each. In the columns No. 6 and No. 3 in FIG. 5, the average value (□ mark) and standard deviation (the line extending vertically from the □ mark) of the thermal sensation reported by these 30 subjects are shown. Show. As can be seen from FIG. 5, the thermal sensation reported by the subject in the second embodiment and the thermal sensation declared by the subject in the general air conditioning 3 are both average values and standard deviations. It is almost the same.

  In addition, in the No. 6 and No. 3 columns of FIG. 6, the average value (□ mark) and standard deviation (the line extending vertically from the □ mark) of the feeling of comfort reported by the 30 subjects above. Indicates. As can be seen from FIG. 6, the comfort reported by the subject in the second embodiment and the comfort reported by the subject in the general air conditioning 3 are almost the same both in average value and standard deviation. It is.

  From this result, according to the control method of the second embodiment, compared to the time of continuous heating operation of the general air conditioner 3, the comfort is not reduced, and the 5 minutes of the 30-minute intermittent cycle is reduced. The amount of energy consumption can be reliably reduced by the amount of stop time.

  As shown in No. 4 of the winter experiment in FIG. 1, the stop time is increased by 10 minutes to 15 minutes compared to the second embodiment (stop time rate 16%) of No. 6 and the operation is started. When the time is increased by 5 minutes to 30 minutes (stop time rate 33%), the thermal sensation moves slightly warmer than No. 6, as shown in FIG. No. 3 general air conditioning 3 was almost the same thermal feeling. Moreover, as shown in FIG. 6, the feeling of comfort was substantially the same as No. 6 (2nd Embodiment) and No. 3 (general air conditioning 3). Therefore, in this case, it is possible to reduce energy more than twice that of the second embodiment without impairing comfort.

  In addition, as shown in No. 5 of the winter experiment in FIG. 1, compared with No. 6 (second embodiment), the stop time is increased by 5 minutes to 10 minutes, and the operation time is increased by 15 minutes. In the case of 40 minutes (stop time rate 20%), as shown in FIG. 5, the thermal sensation rises slightly compared to No. 6 and is almost the same as No. 3 general air conditioning 3. I felt cold. Further, as shown in FIG. 6, the comfort feeling was slightly lower than that of the general air conditioning 3 of No. 3.

  In addition, as shown in No. 7 of the winter experiment in FIG. 1, when the stop time is increased by 5 minutes to 10 minutes and the operation time is decreased by 5 minutes to 20 minutes compared to No. 6. At (stop time rate 33%), as shown in FIG. 5, the thermal sensation slightly decreased compared to No. 6 and moved to a “slightly cooler” level than the “normal” level. As for comfort, as shown in FIG.

  In addition, as shown in No. 8 of the winter experiment in FIG. 1, the temperature of the inner wall surface of the wall is increased by 5 ° C. to 26 ° C. and the stop time is increased by 10 minutes as compared with No. 6. When the operating time is increased by 5 minutes to 30 minutes (stop time rate 33%), the cooling operation is started. As shown in FIG. 5, the thermal sensation rises compared to the “normal” level of No. 6 and is slightly lower than the middle level between the “normal” level and the “slightly warm” level. It was. And, as shown in FIG. 6, the comfortable feeling was almost the same as the No. 6 level.

  In addition, as shown in No. 9 of the winter experiment in FIG. 1, the target indoor temperature is lowered by 2 ° C. to 22 ° C. and the temperature of the wall inner peripheral surface is lowered by 2 ° C. compared to No. 6. When the temperature was set to 19 ° C., the thermal sensation decreased as compared to No. 6 and approached the “slightly cool” level as shown in FIG. As shown in FIG. 6, the comfort level was slightly lower than No. 6 and almost reached the “neutral” level.

  Further, as shown in No. 10 of the winter experiment in FIG. 1, the target indoor temperature is lowered by 2 ° C. to 22 ° C. and the temperature of the wall inner peripheral surface is lowered by 2 ° C. compared with No. 6. If the stop time is increased by 10 minutes to 15 minutes and the operation time is increased by 5 minutes to 30 minutes (stop time rate 33%), As shown in FIG. 5, the “normal” level of No. 6 decreased to a “slightly cool” level. In addition, as shown in FIG. 6, the comfort level decreased from No. 6 to a “neutral” level.

  Note that No. 11 of the winter experiment in FIG. 1 is the case where the subject's clothes were increased at No. 4 (stop time rate: 33%), and as shown in FIG. Although it was slightly improved as compared with No. 4, the comfort was almost the same as No. 4, as shown in FIG.

  In the first and second embodiments, the stop time is provided periodically. However, the stop time may be provided aperiodically.

[Third Embodiment]
Next, FIG. 7 shows a third embodiment as an air conditioner of the present invention.

  This air conditioner is installed in a two-story building 1 as shown in FIG. 7, and includes a first fan coil unit 3 placed on the floor of the room 2 on the first floor, and a room 5 on the second floor. It has the 2nd fan coil unit 6 mounted in the floor. The first and second fan coil units 3 and 6 are connected to a pump 8 by a heat medium pipe 7. The pump 8 is connected to the heat source device 10. What is necessary is just to comprise this heat source device 10 with a heat pump chiller, for example. Further, another heat pump 11 is connected to the heat source device 10. This pump 11 is connected to an air handling unit 12 as an air purifier. A suction duct 13 and a discharge duct 15 are connected to the air handling unit 12. The suction duct 13 is adapted to introduce outside air, air from the vicinity of the floor of the first floor room 2 and air from the vicinity of the floor of the second floor room 5. The discharge duct 15 is connected to an air outlet 16 provided near the ceiling of the room 2 on the first floor and an air outlet 17 provided near the ceiling of the room 5 on the second floor. The air handling unit 12 is connected to the heat source device 10 through a heat medium pipe 18. Reference numerals 20 and 21 denote exhaust fans. The pump 8 is connected with a timer 23 as a control unit. The heat source device 10 may be composed of a refrigerator and a boiler instead of the heat pump chiller, or may be composed of a hot / cold water generator.

  The operation of the air conditioner having the above configuration will be described. In the air conditioner, the heat medium is supplied from the heat source device 10 to the pumps 8 and 11. The pump 8 supplies the heat medium to the fan coil units 6 and 3. Then, the fan coil units 6 and 3 blow cold air or hot air into the chamber 5 and the chamber 2. Then, the heat medium from the fan coil unit 6 is returned to the heat source device 10 through the heat medium pipe 18.

  On the other hand, the heat medium from the pump 11 is supplied to the air handling unit 12. Then, the air handling unit 12 cleans the outside air and the room air introduced into the air handling unit 12 from the duct 13 and discharges them from the duct 15 while being cooled or warmed by the heat medium. As a result, clean cool air or warm air blows out from the air outlets 16 and 17.

  Next, the operation of the timer 23 as the control unit will be described with reference to the flowchart of FIG.

  First, when a predetermined start signal is input, the timer 23 starts measuring time and proceeds to step S1 to determine whether or not 30 minutes have passed, and 30 minutes have not passed in step S1. Returns to step S1. On the other hand, when it is determined that 30 minutes have elapsed, the process proceeds to step S2 to stop the operation of the pump 8.

  Next, it progresses to step S3, the elapsed time after the said stop is timed, and it is judged whether this elapsed time reached 15 minutes. When it is determined that the elapsed time has not reached 15 minutes, the process returns to step S3. When it is determined that the elapsed time has reached 15 minutes, the process proceeds to step S4 to start the operation of the pump 8. Next, the process proceeds to step S5, where it is determined whether or not a stop signal for stopping the operation of the pump 8 is input. When it is determined that the stop signal is not input, the process returns to step S1, and from step S1 to step S4. Therefore, intermittent operation is continued.

  On the other hand, when it is determined in step S5 that the stop signal has been input, the operation of the pump 8 is continued and the intermittent operation is terminated.

  Thus, according to this embodiment, one cycle of the intermittent operation is 45 minutes, the stop time is 15 minutes that is one third of the one cycle time, and the operation time is 30 minutes. Therefore, the energy consumption can be reduced to the maximum while minimizing the probability that a person in the room feels uncomfortable. The reason is that the ratio of the stop time to the stop period is 1/3 and the stop time is 15 minutes based on the results of the experiment in the first embodiment and the second embodiment. This is because, under the conditions, it is understood that the energy consumption can be reduced to the maximum while minimizing the probability that the person in the room feels uncomfortable.

  Therefore, according to this embodiment, the energy consumption can be reliably reduced by the amount of the stop time without impairing the comfort, and the comfort can be improved by the intermittent operation.

  In the third embodiment, the air handling unit 12 and the pump 11 are always in an operating state, but they may be operated intermittently while keeping the air contamination concentration of the air-conditioned room within an allowable range. In this case, on / off of the pump 11 is controlled by the timer 23.

  In the third embodiment, the control unit is configured by the timer 23 that controls the on / off of the pump 8. However, an automatic operation / stop switching valve is installed on the downstream side of the pump 8 instead of the timer 23. Also good.

  Further, in addition to the operation / stop automatic switching valve, another operation / stop automatic switching valve may be provided on the downstream side of the pump 11 to realize intermittent operation by the both operation / stop automatic switching valve.

  In the third embodiment, the intermittent operation of the air-conditioning operation is realized by turning on and off the pump 8 so that the heat medium is sent to the fan coil units 6 and 3 and stopped. The intermittent operation may be realized by turning on / off the blower fans of the units 6 and 3. Furthermore, in addition to turning on / off the fan fans of the fan coil units 6 and 3, the air fan of the air handling unit 12 may be turned on / off to perform an intermittent operation. In this case, the falling of the stop of the air conditioning operation and the rising of the air conditioning operation can be quickly performed. Therefore, intermittent control of the air conditioning operation is facilitated. In addition, control cost can be reduced because only electrical control is required. However, if both the blower fan and the pump 8 are turned off at the time of the stop, the energy saving effect can be maximized.

  In the third embodiment, the heat medium is supplied from the heat source device 10 to the air handling unit 12. However, the heat medium is supplied from another heat source device, and the heat source device 10 is intermittently turned on and off. It may be activated. In this case, the timer 23 is provided in the heat source device 10 and controlled. Moreover, in the said 3rd Embodiment, although several rooms are air-conditioned with one heat-source device, when air-conditioning one room with the individual air conditioner comprised with an indoor unit with an outdoor unit, The intermittent operation may be performed on and off.

[Fourth Embodiment]
Next, the control content of the cooling operation in the control method of the air conditioner as the fourth embodiment of the present invention is shown in the column of Experiment 5 in the list of experimental conditions shown in FIG. In this air conditioner control method, when the temperature of the inner wall surface of the room is constant at 28 ° C., the cooling operation for keeping the room temperature at 26 ° C. is stopped for 5 minutes regardless of the room temperature. Control was performed so that the operation was stopped for a period of 25 minutes. And in this embodiment, the blower outlet which blows off a cold wind was made into the anemo type, and the size was made into "# 12.5". This “# 12.5” represents that the diameter of the duct is 127 mm. In this embodiment, the temperature of the cold air blown out from the anemo-type air outlet is set to 10 ° C.

  On the other hand, as a comparison object with respect to the fourth embodiment, there is a conventional control method shown in the column of Experiment 1 in FIG. The control method of Experiment 1 is that the size of the anemo-type air outlet is larger “# 15” than that of the fourth embodiment, and the temperature of the cold air from the air outlet is set to 16 ° C., Furthermore, the fourth embodiment is different from the fourth embodiment in that intermittent operation is not performed. “# 15” represents that the diameter of the duct is 152 mm. Unlike the fourth embodiment, the control method of Experiment 1 does not perform intermittent operation and low-temperature cold air operation.

  The average thermal sensation reported by 24 subjects compared to Experiment 5 and Experiment 1 in FIG. 9 is indicated by a short horizontal bar in columns No. 5 and No. 1 in FIG. It represents with the line segment extended up and down from the said horizontal bar. As can be seen from FIG. 10, the average value of the low-temperature cold air No. 5 (fourth embodiment) is a level that is slightly “cooler” than “normal”. On the other hand, the average value of No. 1 (conventional example) is substantially the same level as No. 5 (fourth embodiment).

  In addition, in comparison with Experiment 5 and Experiment 1 in FIG. 9, the comfort feelings reported by 24 subjects are indicated by short horizontal bars in the columns No. 5 and No. 1 in FIG. It represents with the line segment extended up and down from the said horizontal bar. As can be seen from FIG. 11, the average value of the low-temperature cold air No. 5 (fourth embodiment) is at the level of “slightly comfortable”. Further, the average value of No. 1 (conventional example) as a comparison target is slightly more comfortable than No. 5 (fourth embodiment), but is approximately the same level.

  As can be seen from the experimental results of FIG. 10 and FIG. 11 described above, according to the embodiment (No. 5) of this low-temperature cold air, both the thermal feeling and the comfort feeling are conventional examples without intermittent operation and low-temperature cold air operation. It can be made substantially equivalent to (Experiment 1).

  Therefore, as can be seen from the above experimental results, according to the fourth embodiment, chill (cold draft) is not felt in the thermal sensation, and comfort is not impaired as compared with the conventional one.

  Moreover, according to this embodiment, the amount of conditioned air is less than that in the case where the temperature of the conditioned air blown into the room is set to a value of 16 ° C. or more while performing intermittent operation regardless of the room temperature. Less is enough. Therefore, when sending cool air from the central refrigeration system, the blower fan and the cool air duct can be downsized. Moreover, when using a fan coil unit, a refrigerant pipe and a refrigerant pump can be reduced in size. Therefore, the initial cost and running cost of the air conditioner can be reduced.

  Therefore, according to the fourth embodiment, energy can be saved by forced intermittent operation, and the initial cost and running cost of the air conditioner can be reduced.

  In the above embodiment (No. 5), the air outlet is an anemo type, but the air outlet may be a flap type as shown in No. 9 of FIG. The flap-type outlet has an electric movable fin installed inside the line-type outlet and can change the direction of the outlet. According to the experiment of No. 9, the thermal sensation is at the “normal” level substantially the same as that of the embodiment (No. 5) as shown in FIG. Further, according to the experiment of No. 9, as shown in FIG. 11, the feeling of comfort is improved as compared with the above embodiment, which is an intermediate level between “slightly comfortable” and “comfortable”.

  Further, as shown in the column of Experiment 10 in FIG. 9, when the room temperature target temperature during the cooling operation is set to 27 ° C. and is increased by 1 ° C. compared to the above embodiment (No. 5), FIG. As shown in FIG. 11, it was possible to obtain the same thermal sensation and comfort as in Experiment No. 7 (comparative object) that did not employ low-temperature cold air.

  Further, as shown in the column of Experiment 11 in FIG. 9, when the combination of the cooling operation stop time and the operation time in Experiment 5 is set to 30 minutes and 30 minutes, the above-described implementation is performed in the thermal sensation of FIG. It was equivalent to the form (No. 5), and the comfort feeling of FIG. 11 was superior to the above embodiment (No. 5).

  As shown in Experiments 2, 3, and 4 in FIG. 9, in the non-intermittent low-temperature cold air operation with a stop time rate of 0%, the thermal sensation is almost the same level as the above embodiment (No. 5). In terms of comfort, the level was almost equal to or slightly inferior to that of the above embodiment (No. 5). From this experimental result, it can be seen that the intermittent operation as in the present invention realizes energy saving without impairing the feeling of comfort.

  In addition, in the said 4th Embodiment, although the blowing temperature was set to 10 degreeC, you may set this blowing temperature to a value lower than 16 degreeC above 10 degreeC. Also in this case, according to the set value of the blowing temperature, the blower fan and the cold air duct can be downsized, and the refrigerant pipe and the refrigerant pump can be downsized.

The first embodiment of the control method of the air conditioner of the present invention and the modification thereof, the second embodiment and the modification thereof, and a list for explaining a comparative example for these embodiments. FIG. FIG. 2A is a diagram showing a driving state of a conventional example as a comparative example of the first embodiment, and FIG. 2B is a diagram showing a driving state of the first embodiment. FIG. 2 (C) is a diagram showing the state of active operation as a comparative example of the first embodiment, and FIG. 2 (D) is a diagram showing the operation state of the second embodiment. It is a figure which shows the average of the said 1st Embodiment and its modification, and also the report of the thermal sensation of the comparative example, and a standard deviation. It is a figure which shows the average of the said 1st Embodiment and its modification, and also the report of the feeling of comfort of the comparative example, and a standard deviation. It is a figure which shows the average and standard deviation of the said 2nd Embodiment and its modification, and also the report of the thermal sensation of the comparative example. It is a figure which shows the average of the said 2nd Embodiment and its modification, and also the report of the feeling of comfort of the comparative example, and a standard deviation. It is a figure which shows 3rd Embodiment as an air conditioner of this invention. It is a flowchart explaining the operation | movement of the said 3rd Embodiment. It is a figure which shows the list explaining the 4th Embodiment and its modification of the control method of the air conditioner of this invention, and also the comparative example with respect to these embodiment. It is a figure which shows the average and standard deviation of the report of the thermal sensation of the said 4th Embodiment and its modification example, and the comparative example. It is a figure which shows the average and standard deviation of the report of the comfort feeling of the said 4th Embodiment and its modification, and the comparative example.

Explanation of symbols

1 ... building, 2 ... room, 3 ... first fan coil unit, 5 ... room,
6 ... 2nd fan coil unit, 7 ... Heat-medium piping, 8 ... Pump,
10 ... Heat source device, 11 ... Pump, 12 ... Air handling unit,
13 ... Suction duct, 15 ... Discharge duct, 16, 17 ... Air outlet,
18 ... Heat medium piping, 23 ... Timer.

Claims (2)

A step of obtaining a thermal sensation and a comfortable feeling felt by a plurality of persons in the predetermined space in a continuous operation state in which the air conditioner of the air conditioner is continuously performing the air conditioning operation so that the temperature of the predetermined space becomes constant. When,
A feeling of warmth and comfort felt by the plurality of persons in the predetermined space in a state where the air conditioning operation of the air conditioner in the predetermined space is forcibly stopped for a predetermined time and the operation is intermittently performed. Determining in advance the stop time and operation time of the intermittent operation such that the thermal sensation and comfort felt by the plurality of persons in the predetermined space in the continuous operation state are comparable;
Regardless of the temperature of the predetermined space, the step of intermittently operating the air conditioning operation of the air conditioner in the predetermined space according to the obtained stop time and operation time of the intermittent operation,
The plurality of persons in the predetermined space where the air conditioning is performed by the intermittent operation does not feel that the comfort is impaired as compared to the case where the plurality of persons are in the predetermined space in the continuous operation state. A control method for an air conditioner. Finding the warmth and comfort felt by a plurality of people in the predetermined space in the continuous operation state in which the air conditioning operation is continuously performed so that the temperature of the predetermined space becomes constant,
Thermal sensation and comfort felt by the plurality of persons in the predetermined space in a state where the air conditioning operation in the predetermined space is forcibly stopped for a predetermined time and the operation is intermittently performed, and the continuous operation Determining in advance the stop time and the operation time of the intermittent operation such that the thermal sensation and comfort felt by the plurality of persons in the predetermined space in the state are comparable,
Regardless of the temperature of the predetermined space, the air conditioning operation in the predetermined space is intermittently operated according to the obtained stop time and operation time of the intermittent operation,
The plurality of persons in the predetermined space where the air conditioning is performed by the intermittent operation does not feel that the comfort is impaired as compared to the case where the plurality of persons are in the predetermined space in the continuous operation state. A featured air conditioner.

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