JP5638447B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner.

  As a conventional air conditioner for centralized cooling and heating, there is a duct type that distributes and blows cold air or warm air to a plurality of air-conditioned rooms through a duct and a plurality of branch ducts.

  In Patent Literature 1, in an air conditioner in which a damper is attached to each branch duct, a difference in airflow resistance of each branch duct is detected in advance, and the air volume of each terminal air volume control unit is indirectly estimated, It is described that information on how to control an appropriate opening / closing degree of a damper with respect to a set air volume of an air conditioning room is stored. Thus, according to Patent Document 1, it is supposed that an appropriate amount of air can be stably supplied to each air-conditioned room by appropriately controlling the degree of opening and closing of the damper based on the above information in the actual operation mode. ing.

Japanese Patent No. 2661274

  Patent Document 1 does not specifically describe how to determine and set the set air volume (individual required air volume) of each air-conditioned room.

  On the other hand, a case will be considered in which the individual required air volume corresponding to the temperature condition of each air-conditioned room is determined and set with reference to the determination information of the individual required air volume determined in advance according to the resistance coefficient of the ventilation path and the transport air volume. In this case, the sum of the individual required air volumes of each air-conditioned room is controlled to be the air volume of the air conditioner, but in the distribution of air to each air-conditioned room by such air volume, Depending on the resistance coefficient of the air flow path and the accuracy of the conveyance air volume, and the resistance coefficient is improperly set due to actual use conditions and setting errors, air with an appropriate air volume can be distributed to each air-conditioned room. There is no tendency.

  Consider a case where the individual required air volume of each air-conditioned room is set in proportion to the temperature difference between the set room temperature and the actual room temperature. In this case, the distribution of air to each air-conditioned room is not necessarily suitable for the size of the air-conditioned room and the air-conditioning load, and as a result, the state of excessive or insufficient air conditioning continues or the rise of air conditioning becomes slow. May cause problems. Thereby, it exists in the tendency which cannot distribute the air of appropriate air volume with respect to each air-conditioned room.

  Moreover, in the air conditioner described in Patent Document 1, since the initial resistance coefficient of the air passage calculated before the air conditioning operation is continuously used during the air conditioning operation, it is difficult to cope with temporal variation of the resistance coefficient. It is. For example, use in a state different from the initial resistance coefficient, such as an increase in airflow resistance due to dust volume in the duct path during air conditioning operation or installation of obstacles, or opening the door of the air-conditioned room, When measuring the resistance coefficient before air conditioning operation or during trial operation, for example, an incorrect measurement such as a window or door in the air-conditioned room being open, or a pressure loss is manually input to the device in advance. The initial resistance coefficient may not be appropriate due to an input mistake or the like. Thereby, it exists in the tendency which cannot distribute the air of appropriate air volume with respect to each air-conditioned room.

  Also, in the method of distributing the air flow according to the pressure loss of the air flow path to each air-conditioned room, if there is an inappropriate resistance coefficient even in one air-conditioned room, it affects the overall air flow balance, The distribution of air to each air-conditioned room becomes inadequate, and there is a tendency to cause problems of noise due to excessive or insufficient air conditioning and excessive air flow. That is, there is a tendency that air having an appropriate air volume cannot be distributed to each air-conditioned room.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the air conditioner which can distribute the air of appropriate air volume to each air-conditioned room.

In order to solve the above-described problems and achieve the object, an air conditioner according to one aspect of the present invention includes a plurality of air exchanged by a blower through a duct and a plurality of branch ducts. A central air blower that distributes and blows air to the air-conditioned room, an air volume setting means that sets the air flow required for the air-conditioned room as an individual required air volume for each of the plurality of air-conditioned rooms, and the heat exchanger Resistance coefficient setting means for setting a frictional resistance coefficient of a plurality of ventilation paths to reach the plurality of air-conditioned rooms via the duct and the plurality of branch ducts, and an air blowing amount through the plurality of branch ducts A plurality of air volume adjusting devices for adjusting the set individual required air volume based on the set frictional resistance coefficient, a plurality of room temperature setting means for setting the room temperature of the plurality of air-conditioned rooms, Multiple covers A plurality of room temperature detecting means for detecting the room temperature of the conditioning room, and the air volume setting means and the resistance coefficient setting means set the respective friction resistance coefficients of the plurality of air flow paths to initial values before the air conditioning operation. A first initial value setting means, a second initial value setting means for setting an individual required air volume of an air-conditioned room for performing air-conditioning operation to an initial value at the start of air-conditioning operation of one or more air-conditioned rooms, and a cooling operation. When the detected room temperature is lower than the set room temperature, it is determined that the capacity is excessive, and when the detected room temperature is higher than the set room temperature, the capacity is insufficient. And for the air-conditioned room that performs the heating operation, it is determined that the detected room temperature is excessive when the detected room temperature is higher than the set room temperature, and the detected room temperature is higher than the set room temperature. If it ’s low, it ’s not enough If there are both the determining means to be determined and the air-conditioned room determined to be overcapacity by the determining means and the air-conditioned room determined to be insufficient capacity by the determining means, the capacity is determined by the determining means. The air flow to the air-conditioned room determined to be insufficient by the determination means is corrected by reducing the set frictional resistance coefficient with respect to the air-flow path to the air-conditioned room determined to be excessive. Correction is made to increase the set frictional resistance coefficient with respect to the path, and the air-conditioned room determined to be overcapacity by the determination means and the air-conditioned room determined to be insufficient by the determination means If one of the above and the other does not exist , the determined individual air volume is corrected so as to be reduced for the air-conditioned room determined to be excessive capacity by the determination means, and the determination And correction means for correcting the air-conditioned room determined to be insufficient by the stage so as to increase the set individual required air volume.

  ADVANTAGE OF THE INVENTION According to this invention, the excess and deficiency of the air-conditioning capability of each air-conditioned room can be caught, and suitable adjustment of ventilation output and distribution of appropriate air volume as the whole system can be performed. Appropriate air volume can be distributed to each air-conditioned room.

Drawing 1 is a figure showing the composition of the air harmony machine concerning an embodiment. FIG. 2 is a flowchart showing the operation of the air conditioner according to the embodiment.

  Embodiments of an air conditioner according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
An air conditioner 100 according to an embodiment will be described with reference to FIG. FIG. 1 is a configuration diagram illustrating the entire system of the air conditioner 100.

  The air conditioner 100 can perform centralized cooling and heating in which cold air or hot air is blown from a single air-conditioning source to a plurality of air-conditioned rooms, and the amount of air blown to each air-conditioned room can be individually adjusted for each air-conditioned room. Is. Specifically, the air conditioner 100 includes a central air blower 6, a plurality of air flow rate adjusting devices 7a to 7d, a plurality of room temperature setting units 18a to 18d, a plurality of room temperature detection units 9a to 9d, a resistance coefficient setting unit 12, A damper opening / closing determination unit 17, a total required air volume determination unit 15, and a frequency determination unit 16 are provided.

  The concentrated air blower 6 includes a heat exchanger 2, a blower 3, a duct 4, and a plurality of branch ducts 5a to 5d. The central air blower 6 distributes the air heat-exchanged by the heat exchanger 2 to the plurality of air-conditioned rooms 1a to 1d through the duct 4 and the plurality of branch ducts 5a to 5d by the air blower 3.

  The heat exchanger 2 performs heat exchange with the supplied air. The heat exchanger 2 cools the supplied air, for example. Alternatively, the heat exchanger 2 heats supplied air, for example. For example, the air exchanged by the heat exchanger 2 is sucked by the blower 3 and sent to the duct 4. Although FIG. 1 illustrates a configuration in which the heat exchanger 2 is arranged on the suction side of the blower 3, the heat exchanger 2 may be arranged on the blowout side of the blower 3.

  The blower 3 guides air to the heat exchanger 2 from the outside, for example, and sends the air heat-exchanged by the heat exchanger 2 to the duct 4. The blower 3 is, for example, a multiblade fan.

  The duct 4 guides the air sent by the blower 3 to the plurality of branch ducts 5a to 5d. The duct 4 is heat-insulated with glass wool or the like on its inner wall surface or outer wall surface, for example.

  The plurality of branch ducts 5a to 5d respectively guide the air guided by the duct 4 to the corresponding air-conditioned rooms 1a to 1d. Thereby, air is blown into the air-conditioned rooms 1a to 1d. Each branch duct 5a-5d is heat-insulated with glass wool or the like on its inner wall surface or outer wall surface, for example.

  The air volume setting unit 11 sets the individual required air volume for each of the plurality of air-conditioned rooms 1a to 1d. The individual required air volume is an air volume required (required) individually for each of the air-conditioned rooms 1a to 1d. The air volume setting unit 11 sets the individual required air volume within a predetermined setting range, for example.

  The plurality of air flow rate adjusting devices 7a to 7d are mounted on the corresponding branch ducts 5a to 5d, respectively, and adjust the air flow rate of the air passing through the branch ducts 5a to 5d based on the set individual required air volume. To do. Specifically, each blast volume adjusting device 7a-7d has dampers 8a-8d, for example. Each of the dampers 8a to 8d adjusts the amount of air blown through the branch ducts 5a to 5d based on the individual required air volume of the air-conditioned rooms 1a to 1d, depending on the opening degree.

  Each of the plurality of room temperature setting means 18a to 18d is installed on the wall surface or the like of the corresponding air-conditioned room 1a to 1d, and sets the room temperature of the air-conditioned room 1a to 1d, for example, according to an operation from the user.

  Each of the plurality of room temperature detecting means 9a to 9d is installed on the wall surface or the like of the corresponding air-conditioned room 1a to 1d, and periodically detects the room temperature of the air-conditioned room 1a to 1d, for example. Each room temperature detection means 9a-9d is a temperature thermistor, for example.

  The room temperature setting means 18a to 18d and the room temperature detection means 9a to 9d may be incorporated in one controller installed in the air-conditioned rooms 1a to 1d, or may be centrally managed independently of each other.

  The resistance coefficient setting means 12 sets the friction resistance coefficients of a plurality of air passages from the central air blower 6 to the connection to the plurality of air-conditioned rooms 1a to 1d via the duct 4 and the plurality of branch ducts 5a to 5d. To do. For example, the resistance coefficient setting unit 12 sets the frictional resistance coefficient within a predetermined setting range.

  The pressure loss determining unit 14 receives the information on the individual required air volume of each of the air-conditioned rooms 1 a to 1 d from the air volume setting unit 11, and receives the information on the frictional resistance coefficient of each ventilation path from the resistance coefficient setting unit 12. The pressure loss determination means 14 determines the pressure loss of each ventilation path according to the individual required air volume of each of the air-conditioned rooms 1a to 1d and the frictional resistance coefficient of the corresponding ventilation path.

  The damper opening / closing determining means 17 determines the opening / closing degrees of the dampers 8a to 8d of the air flow rate adjusting devices 7a to 7d according to the signal from the pressure loss determining means 14.

  The total required air volume determining unit 15 receives the individual required air volumes of the air-conditioned rooms 1 a to 1 d from the air volume setting unit 11. The total required air volume determining means 15 determines the total required air volume that is the sum of the individual required air volumes of the air-conditioned rooms 1a to 1d by obtaining the sum of the individual required air volumes of the air-conditioned rooms 1a to 1d.

  The frequency determining unit 16 receives information on the total required air volume from the total required air volume determining unit 15. The frequency determining means 16 determines the drive frequency of the fan motor in the blower 3 and supplies it to the fan motor so that the total required air volume, that is, the actual air volume of the air conditioner 100 can be obtained. Thereby, the air blower 3 sends the air of the air volume according to the total required air volume to the duct 4.

  Note that each of the above-mentioned means has a function of storing / storing each set or determined value.

  Next, the internal configurations of the air volume setting unit 11 and the resistance coefficient setting unit 12 will be described.

  As shown in FIG. 1, the air volume setting unit 11 includes a storage unit 11a, an initial value setting unit 11b, a determination unit 11c, a correction unit 11d, and a generation unit 11e. As shown in FIG. 1, the resistance coefficient setting unit 12 includes a storage unit 12a, an initial value setting unit 12b, a determination unit 12c, a correction unit 12d, and a generation unit 12e.

  The storage unit 11a stores air volume determination information for determining the individual required air volume from the temperature difference between the detected room temperature and the set room temperature. The air volume determination information may be, for example, information tabulated in association with a plurality of temperature difference signals (a plurality of temperature difference ranges) and a plurality of individual required air volumes. The air volume determination information is acquired experimentally in advance, for example. Alternatively, the air volume determination information may be information formulated using, for example, a function indicating the relationship between the temperature difference and the individual required air volume.

  The storage unit 12a stores resistance coefficient determination information for determining an initial value of the frictional resistance coefficient. The resistance coefficient determination information may be, for example, information in which a plurality of friction resistance coefficients are associated with an identifier indicating that the initial value should be used. The resistance coefficient determination information is acquired experimentally in advance, for example.

  When the air conditioning operation is started in one or more of the air-conditioned rooms 1a to 1d, the initial value setting unit 11b and / or the determination unit 12c are detected by the room temperature detection units 9a to 9d and the room temperature setting units 18a to 18d. A temperature difference signal indicating a temperature difference from the set room temperature is acquired for each of the air-conditioned rooms 1a to 1d. The temperature difference signal may be generated by, for example, the room temperature detection means 9a to 9d, or may be generated by the generation means 11e in the air volume setting means 11 and / or the generation means 12c in the resistance coefficient setting means 12. The initial value setting means 11b determines the initial value of the individual required air volume of each of the air-conditioned rooms 1a to 1d to be air-conditioned in accordance with the acquired temperature difference signal and the air volume determination information stored in the storage means 11a. To set.

  The initial value setting means 12b determines and sets the initial value of the frictional resistance coefficient of the air flow path to each of the air-conditioned rooms 1a to 1d to be air-conditioned according to the resistance coefficient determination information stored in the storage means 12a. .

  The determining unit 11c and / or the determining unit 12c are, for example, based on the room temperature detected by the room temperature detecting units 9a to 9d and the room temperature set by the room temperature setting units 18a to 18d at regular intervals. It is determined whether the cooling / heating capacity allocated to 1a to 1d is excessive or insufficient.

  Specifically, the determining unit 11c and / or the determining unit 12c sets the room temperature detected by the room temperature detecting units 9a to 9d to the air-conditioned rooms 1a to 1d performing the cooling operation by the room temperature setting units 18a to 18d. It is determined that the capacity is excessive when the temperature is lower than the room temperature. With respect to the air-conditioned rooms 1a to 1d that perform the cooling operation, the determination unit 11c and / or the determination unit 12c has a room temperature detected by the room temperature detection units 9a to 9d higher than the room temperature set by the room temperature setting units 18a to 18d. It is determined that the capacity is insufficient.

  In addition, the determination unit 11c and / or the determination unit 12c is configured such that the room temperature detected by the room temperature detection units 9a to 9d is set by the room temperature setting units 18a to 18d with respect to the air-conditioned rooms 1a to 1d performing the heating operation. If it is higher, it is determined that the capacity is excessive. The determination unit 11c determines that the capacity is insufficient when the room temperature detected by the room temperature detection units 9a to 9d is lower than the room temperature set by the room temperature setting units 18a to 18d.

  The correcting unit 11d is configured such that the air-conditioned room determined to have excessive capacity by the determining unit 11c and / or the determining unit 12c and the air-conditioned room determined to have insufficient capacity by the determining unit 11c and / or the determining unit 12c. If one is present, the next correction is performed. That is, the correcting unit 11d corrects the individual required air volume set for the air-conditioned rooms 1a to 1d determined to have excessive capacity by the determining unit 11c and / or the determining unit 12c. The correction unit 11d corrects the individual required air volume set for the air-conditioned rooms 1a to 1d determined to be insufficient in capacity by the determination unit 11c and / or the determination unit 12c.

The correcting unit 12d is configured such that the air-conditioned room determined to have excessive capacity by the determining unit 11c and / or the determining unit 12c and the air-conditioned room determined to be insufficient by the determining unit 11c and / or the determining unit 12c. If both are present, the next correction is made. That is, the correction unit 12d, the determination unit 11c and / or judging means 12c corrects so as to reduce friction resistance coefficient set for air flow path to be air-conditioned room 1a~1d it is determined that the capacity excess by To do. The correcting unit 12d corrects the frictional resistance coefficient set for the air flow path to the air-conditioned rooms 1a to 1d determined to be insufficient by the determining unit 11c and / or the determining unit 12c so as to increase .

  Next, operation | movement of the air conditioner 100 is demonstrated using the flowchart shown in FIG. FIG. 2 is a flowchart illustrating an operation of correcting the frictional resistance coefficient of each of the air-conditioned rooms 1a to 1d of the air conditioner 100. When the air conditioning operation by the air conditioner 100 (for example, one or more of the air-conditioned rooms 1a to 1d) is started, for example, operation control is performed according to the following routine.

  In step S1, the initial value setting means 12b of the resistance coefficient setting means 12 determines the initial value of the friction resistance coefficient of the air flow path to each of the air-conditioned rooms 1a to 1d according to the resistance coefficient determination information stored in the storage means 12a. Determine and set. For example, the initial value setting means 12b sets the value of the frictional resistance coefficient indicated as the standard resistance in the resistance coefficient determination information to the initial value of the frictional resistance coefficient of the ventilation path to each of the air-conditioned rooms 1a to 1d.

  In step S2, the room temperature detecting means 9a to 9d receive the information on the room temperature set from the corresponding room temperature setting means 18a to 18d, and subtract the set room temperature from the detected room temperature to obtain a temperature difference signal, for example. Input to the setting means 11. The air volume setting means 11 receives the temperature difference signal from the room temperature detection means 9a to 9d.

  In step S3, the initial value setting unit 11b of the air volume setting unit 11 determines the initial value of the individual required air volume according to the temperature difference signal input in step S2 and the air volume determination information stored in the storage unit 11a. And set. For example, the initial value setting unit 11b sets the value of the individual required air volume corresponding to the input temperature difference signal in the tabulated information.

  In step S4, the determination unit 11c and / or the determination unit 12c determines whether or not the individual required air volume correction process is started. The determination unit 11c and / or the determination unit 12c advances the process to step S5 when starting, and advances the process to step S13 when not starting.

  In step S5, the room temperature detecting means 9a to 9d receive the room temperature information set from the corresponding room temperature setting means 18a to 18d, and subtract the set room temperature from the detected room temperature to obtain a temperature difference signal, for example. Input again to the setting means 11. The air volume setting means 11 receives the temperature difference signal from the room temperature detection means 9a to 9d.

  In step S6, the determination unit 11c and / or the determination unit 12c sequentially starts from the first air-conditioned room 1a among the plurality of air-conditioned rooms 1a to 1d in accordance with the temperature difference signal from each room temperature detection unit 9. Then, it is determined whether the air conditioning capacity of each air-conditioned room 1a-1d is excessive or insufficient. When it is determined that the air conditioning capacity of the air-conditioned rooms 1a to 1d is excessive, the determination unit 11c and / or the determination unit 12c proceeds to the process of the air-conditioned rooms 1a to 1d to step S7, and the air-conditioned room 1a When it is determined that the cooling / heating capacity of ˜1d is insufficient, the process of the air-conditioned rooms 1a to 1d is advanced to step S8, and when it is determined that the cooling / heating capacity of the air-conditioned rooms 1a to 1d is not excessive or insufficient, The process of the air-conditioned rooms 1a to 1d is advanced to step S13.

  In step S7, the determination unit 11c and / or the determination unit 12c is a different air-conditioned room (for example, air-conditioned rooms 1b to 1d) from the air-conditioned room (for example, the air-conditioned room 1a) that is currently determined. It is determined whether or not there is a determination result of “insufficient capability” among the determination results of excess or deficiency of the cooling / heating capacity in the factory. The determination unit 11c and / or the determination unit 12c advances the process to step S9 when the determination result of the other air-conditioned room has “insufficient”, and the determination result of the other air-conditioned room does not have “capacity insufficient”. If so, the process proceeds to step S10.

In step S9, the correction means 12d of the resistance coefficient setting means 12 sets the frictional resistance coefficient of the ventilation path from the air-conditioned rooms 1a to 1d to a predetermined value from the initial value set in step S1 or from the correction value immediately before. Correct to decrease by the value. For example, the correcting unit 12d performs correction so as to decrease the value to a value one rank below among a plurality of settable frictional resistance coefficients.

  In step S10, the correction means 11d of the air volume setting means 11 decreases the individual required air volume of the air-conditioned rooms 1a to 1d by a predetermined value from the initial value set in step S3 or from the immediately preceding correction value. To correct. For example, the correction unit 11d corrects the value so as to reduce the value to a value one rank lower among a plurality of settable individual required air volumes.

  In step S8, the determination unit 11c and / or the determination unit 12c performs other air-conditioned rooms (for example, air-conditioned rooms 1b to 1d) with respect to the air-conditioned room (for example, the air-conditioned room 1a) that is currently determined. It is determined whether or not “overcapacity” is included in the determination result of excess or deficiency of the cooling / heating capacity in the factory. The determination unit 11c and / or the determination unit 12c proceeds to step S11 when the determination result of the other air-conditioned room has “overcapacity”, and the determination result of the other air-conditioned room does not have “overcapacity”. If so, the process proceeds to step S12.

In step S11, the correction means 12d of the resistance coefficient setting means 12 sets the frictional resistance coefficient of the ventilation path from the air-conditioned rooms 1a to 1d to a predetermined value from the initial value set in step S1 or from the correction value immediately before. Correct to increase by the value. For example, the correction unit 12d corrects to increase the value of one rank of the plurality settable friction resistance coefficient.

  In step S12, the correction means 11d of the air volume setting means 11 increases the individual required air volume of the air-conditioned rooms 1a to 1d by a predetermined value from the initial value set in step S3 or from the correction value immediately before. To correct. For example, the correcting unit 11d corrects the value so as to increase it to a value one rank higher than the settable individual required air volumes.

  In step S13, the air volume setting unit 11 and / or the resistance coefficient setting unit 12 determines whether to continue the air conditioning operation. The air volume setting unit 11 and / or the resistance coefficient setting unit 12 returns the process to step S4 when continuing the air conditioning operation, and ends the process when stopping the air conditioning operation.

  By repeating the series of steps, that is, correction control of the individual required air volume and the frictional resistance coefficient for each of the air-conditioned rooms 1a to 1d, the individual request corrected according to the excess or deficiency of the cooling / heating capacity of each of the air-conditioned rooms 1a to 1d. It becomes possible to obtain an air volume or a frictional resistance coefficient. And the pressure loss of the ventilation path | route to each air-conditioned room 1a-1d is each calculated by the pressure loss determination means 14 using these correct | amended individual request | requirement air volume and frictional resistance coefficient, and each air-conditioned room 1a-1d is calculated. By determining the opening degree of the dampers 8a to 8d of each of the air flow rate adjusting devices 7a to 7d by the damper opening / closing determining means 17 with the ratio of the pressure loss of the air flow path, the air conditioning capacity of the air-conditioned rooms 1a to 1d is determined. Capturing excess and deficiency, the system as a whole can distribute appropriate airflow output and appropriate airflow.

  In addition, a series of control operation | movement of said step S4 to step S13 is repeatedly performed for every air-conditioned room 1a-1d, for example with a fixed time interval. Moreover, let the number of connection of a ventilation path be the number of connections (for example, 4 in the case of FIG. 1) of the ventilation volume adjusting devices 7a-7d connected to the air conditioner 100.

  Further, the temperature difference signal input from the room temperature detection means 9a to 9d to the air volume setting means 11 in step S1 or step S5 is a signal indicating a numerical value obtained by subtracting the set room temperature from the detected room temperature, for example. Alternatively, up to a temperature difference within a certain range may be combined into one code (for example, a code for identifying which numerical value range among a plurality of numerical value ranges of the temperature difference signal). .

  In step S6, whether the air-conditioned rooms 1a to 1d are excessively or deficient in the cooling / heating capacity is determined based on the temperature difference signal (for example, the detected room temperature) from each room temperature detecting means 9a to 9d in the cooling operation. If the room temperature is minus), it is judged that the capacity is excessive, and if the temperature difference signals from the room temperature detecting means 9a to 9d are positive values, it is judged that the capacity is insufficient. When the temperature difference signal from -9d is a positive value, it may be determined that the capacity is excessive, and when the temperature difference signal from each of the room temperature detection means 9a-9d is a negative value, the capacity is insufficient. Thereby, it becomes possible to distribute more blast volume to the air-conditioned rooms 1a to 1d that have not reached the set room temperature among the air-conditioned rooms 1a to 1d, and reach the set room temperature earlier. It becomes possible.

  Here, suppose that the frictional resistance coefficient is corrected without correcting the individual required air volume. In this case, there is a possibility that the entire air blowing amount is corrected in an excessive state, and there is a possibility that an excessive air blowing output is wasted.

  Alternatively, suppose that the individual required air volume is corrected without correcting the frictional resistance coefficient. In this case, even if the individual required air volume is corrected and the air volume of the entire air conditioner is changed in a state where the air volume distribution to each air-conditioned room is poor, an excessive air output may be wasted.

On the other hand, in the embodiment, the air-conditioned room determined to have excessive capacity by the determination unit 11c and / or determination unit 12c and the target to be determined to be insufficient capacity by the determination unit 11c and / or determination unit 12c. When both the air-conditioned rooms are present, the friction set by the correcting unit 12d with respect to the air flow path to the air-conditioned rooms 1a to 1d determined to be excessive by the determining unit 11c and / or the determining unit 12c. Correction is made to decrease the resistance coefficient, and the frictional resistance coefficient set for the air flow path to the air-conditioned rooms 1a to 1d determined to be insufficient by the determination means 11c and / or the determination means 12c is increased . Correct as follows. In addition, there is one of the air-conditioned room determined to have excessive capacity by the determining means 11c and / or the determining means 12c and the air-conditioned room determined to be insufficient capacity by the determining means 11c and / or the determining means 12c. However, when the other does not exist , the correcting unit 11d reduces the individual required air volume set for the air-conditioned rooms 1a to 1d determined to be excessive in capacity by the determining unit 11c and / or the determining unit 12c. It correct | amends and correct | amends so that the individual request | requirement air volume set with respect to the air-conditioned rooms 1a-1d determined to be insufficiency by the determination means 11c and / or the determination means 12c may be increased. Thereby, excess and deficiency of the air-conditioning capability of each air-conditioned room 1a-1d can be grasped, and the adjustment of the suitable ventilation output and distribution of the appropriate air volume as the whole system can be performed. That is, according to the embodiment, air having an appropriate air volume can be distributed to each air-conditioned room.

  In addition, you may make it determine the excess / deficiency determination of the heating / cooling capability of step S6, when the temperature difference signal from each room temperature detection means 9a-9d exceeds a certain fixed range. That is, the determination unit 11c and / or the determination unit 12c determines that the temperature difference between the room temperature detected by the room temperature detection units 9a to 9d and the room temperature set by the room temperature setting units 18a to 18d is a threshold range (for example, for each fixed width). The determination in step S6 may be performed when the temperature difference range is exceeded. In this case, it becomes possible to give a certain degree of likelihood to the determination of the distribution control of the blast amount, and it is possible to suppress the damper openings of the dampers 8a to 8d from fluctuating rapidly in a short time. It is possible to suppress sudden fluctuations in the air flow balance to 1d and noise caused by the dampers 8a to 8d.

  In addition, the threshold range may be set such that the temperature difference signal has a positive value and a negative value and different absolute values, or the same absolute value may be set. When the same absolute value (threshold value) is set, the absolute value of the temperature difference and the threshold value may be compared.

  In addition to the method of using the temperature difference between the set room temperature of the air-conditioned rooms 1a to 1d and the actual room temperature as an index used to determine whether the air-conditioning rooms 1a to 1d are in excess or insufficient, the air-conditioned room There are a method of measuring 1V to 1d PMV (Predicted Mean Vote), a method of measuring radiant heat, and the like.

  Moreover, as shown in FIG. 1, the air conditioner 100 may further include a plurality of capacity setting means 10a to 10d. Each of the plurality of capacity setting means 10a to 10d is installed on the wall surface of the corresponding air-conditioned room 1a to 1d and sets the individual required capacity of the air-conditioned room 1a to 1d. The individual required capacity is the capacity corresponding to the cooling / heating capacity required according to the room temperature volume of the air-conditioned rooms 1a to 1d. The individual required capacity is, for example, a value obtained by ranking the room temperature volumes of the air-conditioned rooms 1a to 1d. At this time, the air volume determination information stored by the storage unit 11a may be information for determining the individual required air volume from the detected room temperature and the difference between the set room temperature and the set individual required capacity. Then, the air volume setting unit 11 may set the initial value of the individual required air volume using the air volume determination information stored in the storage unit 11a.

  In step S4, in order to confirm the correction result, it is conceivable to perform a determination process that stops the next correction process until a predetermined period elapses after the correction process. When the air-conditioning operation is started in one or more of the air-conditioned rooms 1a to 1d in a state where the air-conditioning rooms 1a to 1d are stopped, the routine of steps S4 to S13 is not performed for a predetermined time from the start of the operation. You may do it. That is, when the determination unit 11c and / or the determination unit 12c starts the air conditioning operation of one or more air-conditioned rooms 1a to 1d from the state where all the air-conditioning operations of the plurality of air-conditioned rooms 1a to 1d are stopped, Until the predetermined time elapses from the start, the determination in step S4 may be suspended, and the determination in step S4 may be performed in response to the elapse of the predetermined time. Thereby, excessive correction of the room temperature of the air-conditioned rooms 1a to 1d at the start of the air-conditioning operation can be avoided, and the opening degree of the dampers 8a to 8d can be suppressed from changing rapidly in a short time. It is possible to suppress sudden fluctuations in the air flow balance to 1d and noises caused by the dampers 8a to 8d.

  As described above, the air conditioner according to the present invention is useful for distributing air to a plurality of air-conditioned rooms.

1a to 1d Air-conditioned room 2 Heat exchanger 3 Blower 4 Duct 5a to 5d Branch duct 6 Concentrated air blower 7a to 7d Air flow rate adjustment device 8a to 8d Damper 9a to 9d Room temperature detection means 10a to 10d Capacity setting means 11 Air volume setting means 11a Storage means 11b Initial value setting means 11c Determination means 11d Correction means 11e Generation means 12 Resistance coefficient setting means 12a Storage means 12b Initial value setting means 12c Determination means 12d Correction means 12e Generation means 14 Pressure loss determination means 15 Total required air volume determination means 16 Frequency determining means 17 Damper opening / closing determining means 18a to 18d Room temperature setting means

Claims (3)

A centralized blower that distributes and blows air that has been heat-exchanged by a heat exchanger to a plurality of air-conditioned rooms through a duct and a plurality of branch ducts;
An air volume setting means for setting the air flow required for the air-conditioned room as an individual required air volume for each of the plurality of air-conditioned rooms;
A resistance coefficient setting means for setting a frictional resistance coefficient of a plurality of ventilation paths from the heat exchanger to the plurality of air-conditioned rooms via the duct and the plurality of branch ducts;
A plurality of air flow adjustment devices for adjusting the air flow through the plurality of branch ducts based on the set individual required air volume and the set frictional resistance coefficient;
A plurality of room temperature setting means for setting the room temperature of the plurality of air-conditioned rooms;
A plurality of room temperature detecting means for detecting the room temperature of the plurality of air-conditioned rooms;
With
The air volume setting means and the resistance coefficient setting means are:
A first initial value setting means for setting a frictional resistance coefficient of each of the plurality of ventilation paths to an initial value before the air-conditioning operation;
A second initial value setting means for setting an individual required air volume of the air-conditioned room that performs the air-conditioning operation to an initial value at the start of the air-conditioning operation of the one or more air-conditioned rooms;
When the detected room temperature is lower than the set room temperature, it is determined that the capacity of the air-conditioned room performing the cooling operation is excessive, and the capacity is determined when the detected room temperature is higher than the set room temperature. When the detected room temperature is higher than the set room temperature, it is determined that the capacity is excessive for the air-conditioned room that performs heating operation, and the detected room temperature is set. Determination means for determining that the capacity is insufficient when the temperature is lower than room temperature;
When both of the air-conditioned room determined to be excessive capacity by the determination means and the air-conditioned room determined to be insufficient capacity by the determination means exist, it is determined that the capacity is excessive by the determination means. The set friction coefficient is corrected so as to decrease with respect to the air flow path to the air-conditioned room, and the setting is made for the air flow path to the air-conditioned room determined to be insufficient by the determination means. of friction resistance coefficient is corrected to increase, one is present between the air-conditioned room which is judged to be insufficient capacity by the air-conditioning chamber and the determining means is determined as the ability excessive by the determination unit When the other does not exist, the determined individual required air volume is corrected so as to be reduced with respect to the air-conditioned room determined to be excessive capacity by the determination means, and the capacity is insufficient by the determination means. And correcting means for correcting to increase the individual request air volume which is the set for the air conditioning chamber is determined that,
An air conditioner characterized by comprising: The air conditioner according to claim 1, wherein the determination unit performs the determination when a difference between the detected room temperature and the set room temperature exceeds a threshold range. When the air conditioning operation of one or more air-conditioned rooms is started from a state where all air-conditioning operations of the plurality of air-conditioned rooms are stopped, the determination unit performs the determination until a predetermined time elapses from the start. The air conditioner according to claim 1, wherein the air conditioner is suspended.

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