JP2019132538A - Air-conditioning system - Google Patents

Abstract

To provide an air-conditioning system which can locally control an air quantity of conditioned air which is supplied to an objective zone.SOLUTION: An air-conditioning system comprises: an air conditioner 1 for sending out conditioned air 3; an air supply duct 2 for introducing the conditioned air 3 which is sent out of the air conditioner 1 toward an objective zone A; an air supply chamber C arranged at a downstream side of the air supply duct 2; a plurality of flow-out ports 20 for supplying the conditioned air 3 which is sent into the air supply chamber C from the air supply duct 2 to the objective zone A; and fans 20b arranged at the blow-out ports 20, and sending out the conditioned air 3 to the objective zone A. Operations of the fans 20b can be individually controlled with respect to the respective fans 20b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioning system.

  Generally, in office buildings and other commercial and commercial buildings, air conditioning systems that keep the temperature (room temperature) of the air-conditioned space comfortable and constant are installed as health air conditioning. Is often adopted. The air conditioning system of the variable air volume single duct system has higher room temperature tracking performance than the constant air volume single duct system, and is advantageous in terms of transport energy because the air volume is restricted by the heat load of the target zone.

  That is, in a variable air volume single duct type air conditioning system, when load reset control, which will be described later, does not work, the supply air temperature is made constant, and fluctuations in the indoor heat load are handled by changing the supply air volume. By changing the supply air volume for each zone according to the set temperature and heat load in the room, it is possible to cope with the heat load fluctuation for each zone. Basically, the heat quantity treatment can be controlled proportionally by changing only the air volume, which is excellent in that it can be precisely handled with a simple apparatus configuration even if different heat treatment is required for each zone.

  FIG. 6 and FIG. 7 show an example of a conventional general variable airflow single duct type air conditioning system, which is directed to the target area A such as a room of an office building and supplied from the air conditioner 1 outside the target area A. Air-conditioned air 3 is guided through the air duct 2. The air supply duct 2 includes a main duct 4 that extends from the air conditioner 1, a branch duct 5 that branches from the main duct 4 toward the target area A, and an air outlet 6 that is installed in the target area A from the branch duct 5. And a branching end duct 7.

  An air flow rate unit 8 is installed at a position upstream of the branch point to the end duct 7 in the branch duct 5 so that the amount of the conditioned air 3 flowing from the main duct 4 before the branch duct 5 can be adjusted. It has become. Thus, the conditioned air 3 flowing through the main duct 4 is supplied to the air outlet 6 which is the end of the end duct 7 after the air volume is adjusted by the variable air volume unit 8 of the branch duct 5. The variable air volume unit 8 is a device called VAV (Variable Air Volume) or the like, and is a damper unit having a mechanism for measuring its own air volume by a wind speed sensor.

From the viewpoint of air volume control, the air outlet 6 installed in the target area A can be divided for each branch duct 5 or variable air volume unit 8. In the example illustrated here, a total of 18 outlets 6a to 6r are installed in the entire target area A which the air conditioner 1 is responsible for, and the air volume of the conditioned air 3 at the outlets 6a to 6f is installed in the branch duct 5a. The changed air volume unit 8a installs the air volume of the conditioned air 3 at the outlets 6g to 6l in the branch duct 5b. The variable air volume unit 8b installs the air volume of the conditioned air 3 at the outlets 6m to 6r into the branch duct 5c. The variable air volume units 8c thus controlled are respectively controlled. That is, in the target area A, the area where the air outlets 6a to 6f are installed is controlled in the control area A1, the area where the air outlets 6g to 6l are installed is controlled in the control area A2, and the area where the air outlets 6m to 6r are installed is controlled. Speaking of the area A3, the control area A1 is a service zone of the branch duct 5a, the control area A2 is a service zone of the branch duct 5b, and the control area A3 is a service zone of the branch duct 5c. The variable air volume unit 8a is in charge of air volume control in the control area A1, the variable air volume unit 8b is in charge of air volume control in the control area A2, and the variable air volume unit 8c is in charge of air volume control in the control area A3. Normally, the area of the control region that one variable air volume unit is responsible for exceeds 50 m ² , but this value may vary depending on the performance of the variable air volume unit and others.

  As shown in FIG. 6, a return air port 9 is provided at a lower position (here below the floor) in the target area A, and the conditioned air 3 supplied from the air outlet 6 installed in the ceiling 10 is supplied to the floor 11. The air passes through the suction port 12 opened to the bottom of the floor and is returned to the air conditioner 1 from the return air port 9 through the return air duct 13 as the return air 14.

  In-position temperature sensors 15, 16, and 17 are provided at appropriate positions (here, under the floor) of the control areas A1 to A3, respectively, so that the air temperature after processing the indoor heat load at each position is measured. It has become. The measured values of the temperature sensors 15, 16, and 17 in each region are input as temperature signals 15 a, 16 a, and 17 a to a temperature adjustment circuit (not shown) provided in the control device 18. The temperature adjusting circuit is configured to input a control signal 8d to each of the variable air volume units 8a, 8b, 8c based on the temperature signals 15a, 16a, 17a. For convenience of illustration, the control signals 8d to the variable air volume units 8a, 8b, and 8c are collectively displayed here, but actually, different signal levels are displayed to the variable air volume units 8a, 8b, and 8c. The control signal 8d is output separately at.

  That is, each variable air volume unit 8a, 8b, 8c has a one-to-one correspondence with the service zones (control areas A1 to A3) of the branch ducts 5a, 5b, 5c, and the in-region temperature sensor 15 installed in each zone. , 16, 17 based on the measured values. Each set air volume is input to each variable air volume unit 8a, 8b, 8c based on the deviation between the set temperature and the measured temperature in each target zone from the temperature adjustment circuit (not shown). Thus, the fluctuating heat load is processed for each service zone of each branch duct 5.

  A return air temperature sensor 19 is installed in the return air duct 13 so as to measure the temperature of the return air 14. The detected temperature value is inputted as a temperature signal 19a to an air volume adjusting circuit (not shown) provided in the control device 18. When the damper opening degree in each variable air volume unit 8a, 8b, 8c becomes a value within a specific range under a specific condition, the air volume adjustment circuit is configured according to the value indicated by the temperature signal 19a. A control signal 1a is input to a blower (not shown). In the air blower of the air conditioner 1, the air volume is changed based on the control signal 1a.

  The control device 18 includes the temperature adjustment circuit (not shown) by the number of branch ducts 5 (here, three), the air flow adjustment circuit, and a load reset control circuit (not shown). ). In this load reset control circuit, the temperature of the return air 14 is excessively cooled or heated despite the fact that all the temperature adjustment circuits perform control to reduce the damper opening degree of the variable air flow unit 8. In this case, the control signal 1a is input so as to perform load reset control on the air conditioner 1. The load reset control is a control performed for the purpose of ensuring a necessary minimum ventilation amount. For example, for each control valve for controlling the flow rate of the heat medium of the cold water coil and the heating coil constituting the air conditioner 1, If the supply air supplied to the variable air volume unit 8 is too cold, an instruction is input to increase the set supply air temperature, and if it is too hot, an instruction is input to decrease the set supply air temperature.

  Thus, the heat load of the air conditioner 1, the air volume, and the air volume of the conditioned air 3 passing through the variable air volume unit 8 are controlled by the control signals 1 a and 8 d input from the control device 18.

  In addition, as a prior art document relevant to this kind of air conditioning system, there exists the following patent document 1, etc., for example.

JP 2002-0357356 A

  By the way, in the conventional air conditioning system as described above, the air volume is controlled for each variable air volume unit 8, and the air volume cannot be operated for each outlet 6 in the control areas A1, A2, and A3. Therefore, for example, as shown by a one-dot chain line in FIGS. 6 and 7, when there is a high load area in a part of the control area A1, there is a possibility that a sufficient air volume cannot be obtained in the high load area. In particular, as shown in FIG. 7, when the installation position of the area temperature sensor 15 is far from the high load area, the air volume in the variable air volume unit 8 a is determined by the detection value of the area temperature sensor 15, and thereby the air outlets 6 a to 6-. Since the air volume of the entire 6f is determined, a suitable room temperature cannot be obtained in the high load region. Conversely, although illustration is omitted, when the installation position of the in-region temperature sensor 15 is in the immediate vicinity of the high load region, the air flow of the entire outlets 6a to 6f is determined in accordance with the required air amount in the high load region. Therefore, the supply amount of the conditioned air 3 is too large outside the high load region, and a suitable room temperature cannot be obtained. As described above, in the conventional air conditioning system in which the air volume is determined for each control region, it is difficult to maintain a uniform room temperature as a result of the uneven load in the target area.

  Further, for example, when there are a plurality of people in the same control area A1, it is assumed that the required air volume varies depending on the physical condition and preference of each person. It was not possible to control the airflow individually.

  In view of such circumstances, the present invention intends to provide an air conditioning system capable of locally controlling the air volume of conditioned air supplied to a target area.

  The present invention includes an air conditioner that sends out conditioned air, an air supply duct that guides conditioned air sent from the air conditioner toward a target area, an air supply chamber that is installed downstream of the air supply duct, A plurality of air outlets that supply the conditioned air sent from the air supply duct to the air supply chamber to the target area, and a fan that is installed in the air outlet and sends out the air conditioned air in the air supply chamber to the target area, The operation of the fan is related to an air conditioning system that is configured to be individually controllable for each fan.

  In the air conditioning system of the present invention, the air supply chamber is a space located above the ceiling of the target area, and the ceiling forms a grid by a ceiling structural material that forms a ceiling foundation as vertical and horizontal field edges, and the blower The outlet may be configured as an outlet unit including the fan above the outlet facing the target area, and each outlet unit may be configured to be installed in one grid.

  In the air conditioning system of this invention, it can comprise so that another ceiling installation apparatus can be installed in the said one grid with the said blower outlet unit.

  In the air conditioning system of the present invention, it is possible to provide an operation device that is associated with each fan of the outlet unit and that can individually control the operation of the fan.

  In the air conditioning system of the present invention, the operation of the fan can be controlled by power line communication.

  The air conditioning system of the present invention can include a damper that closes the flow path in the housing when the fan is off.

  In the air conditioning system of the present invention, the operation of the damper can be controlled by power line communication.

  According to the air conditioning system of the present invention, it is possible to achieve an excellent effect that the air volume of the conditioned air supplied to the target area can be locally controlled.

It is the schematic which shows an example of the air conditioning system by implementation of this invention. It is a schematic plan view which shows arrangement | positioning of the air supply duct and blower outlet in the Example of this invention. It is a disassembled perspective view which shows the form of the ceiling and the blower outlet in the Example of this invention. It is a side view which shows the form of the blower outlet in the Example of this invention, and is the IV-IV arrow equivalent view of FIG. It is a side view which shows another example of the form of the blower outlet unit by implementation of this invention. It is the schematic which shows an example of the conventional air conditioning system. It is a schematic plan view which shows an example of arrangement | positioning of the air supply duct and blower outlet in the conventional air conditioning system.

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

  1 to 4 show an example of the form of an air conditioning system according to the embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 6 and 7 denote the same parts.

  The basic configuration of this embodiment is the same as that of the conventional example shown in FIGS. 6 and 7. As shown in FIGS. 1 and 2, the conditioned air 3 sent out from the air conditioner 1 passes through the air supply duct 2 to the target area. It is led toward A. However, in this embodiment, the air supply duct 2 includes only the main duct 4 extending from the air conditioner 1 and the branch duct 5 that branches from the main duct 4 toward the target area A. A pipe corresponding to the end duct 7 (see FIGS. 6 and 7) is not provided. In the above conventional example, a total of three branch ducts 5 are provided for each of the control areas A1, A2, and A3. However, in this embodiment, only one branch duct 5 is installed for the entire target area A. Yes.

  In this embodiment, instead of installing the end duct 7 (see FIGS. 6 and 7), the space above the ceiling 10 corresponding to the discharge side of the air supply duct 2 is set as the air supply chamber C, and the supply air is supplied. The conditioned air 3 is supplied from the air chamber C into the target area A through the air outlet 20 provided in the ceiling 10. The space above the ceiling 10 set in the air supply chamber C is designed so that the whole can withstand the supply air pressure, and the conditioned air 3 particularly in a portion where leakage should not occur even when the supply air pressure is applied. Is configured not to leak out of the supply chamber C. The branch duct 5 is provided with a variable air volume unit 8 at a position in front of the target area A so that the amount of conditioned air 3 fed into the supply chamber C through the branch duct 5 can be manipulated. .

In addition to the difference in the configuration of the air supply duct 2, in this embodiment, the air outlets 20 are each configured as an air outlet unit having a fan 20b above the air outlet 20a. The conditioned air 3 in the air chamber C is sent out to the target area A from the blowing part 20a. In addition, as a standard, the air volume sent out by the blower outlet unit 20 is about 200 m < ³ > / h, for example, and in the target area A, it is good to install one blower outlet unit 20 about every 10 m < ² >. However, the specifications, the air volume setting, the number of arrangement, the arrangement density, and the like of the outlet unit 20 can be changed as appropriate.

  In the case of the present embodiment, the ceiling 10 is configured as a grid type system ceiling. As shown in FIG. 3, the ceiling structure material 10a, which is a field edge, is vertically and horizontally assembled to form a grid 10b. The panel 10c and other ceiling equipment can be installed. The ceiling structural member 10a is a building material sold as a system ceiling member under the name of, for example, a T-bar. The ceiling structural member 10a is suspended from above by a hanging tool 10d to form a ceiling base, and is installed on the grid 10b. The entire ceiling 10 is supported together with the panel 10c and other appliances. In addition, when installing instruments other than the panel 10c on the grid 10b, the instruments may be supported by the suspension 10d together with the ceiling structure material 10a if the weight of the instruments is sufficiently small. If it is larger than a certain level, it is necessary to separately provide a hanging tool (not shown) for directly hanging the instruments to support the instruments.

  Each of the air outlet units 20 is configured to be installed in one grid 10b, and the entire air outlet unit 20 including the fan 20b above the air outlet 20a can be supported by the ceiling structural member 10a. ing. Specifically, as shown in FIGS. 3 and 4, openings are provided at the top and bottom of a box-shaped housing 20c, a fan 20b is installed in the upper opening, and an air flow is formed in the lower opening facing the target area A. The air conditioned air 3 (see FIG. 1) in the air supply chamber C is drawn by the fan 20b from the upper side of the housing 20c and sent out from the blower 20a downward. Yes. The blow-out portion 20a is an air control opening made of a member for air distribution provided with a plurality of blades called an anemostat (registered trademark), a diffuser, or the like.

  In this embodiment, the air outlet unit 20 is installed in the grid 10b together with a pair of lighting fixtures 10e which are other ceiling equipment devices. The luminaire 10e has a long side that matches one side of the grid 10b, and the pair of luminaires 10e are arranged along two opposite sides of the single grid 10b. Each lighting fixture 10e is supported by the ceiling structural member 10a constituting the grid 10b on three sides other than the side in contact with the outlet unit 20.

  On the other hand, the blowout unit 20 is designed so that the dimension of the short side of the lower surface matches the difference between one side of the grid 10b and twice the short side of the lighting fixture 10e, and is supported in one grid 10b. The outlet unit 20 can be disposed between the pair of lighting fixtures 10e. Here, the side which contacts the blower outlet unit 20 of the lighting fixture 10e is equipped with the plate-shaped protrusion part 10f which protrudes to the blower outlet unit 20 side on the lower surface. The overhanging part 10f is arranged so as to extend between the two ceiling structure members 10a along the long side of the outlet unit 20 and orthogonal to the long side. The outlet unit 20 sandwiched between the two lighting fixtures 10e is supported in the grid 10b in such a manner that the two long sides of the lower surface are placed on the protruding portions 10f of the lighting fixtures 10e on both sides.

  The dimensions of the blowout unit 20 vary depending on the required blowout air volume. In the example shown here, the bottom surface of the outlet unit 20 has a longer side dimension smaller than one side of the grid 10b. Therefore, when the lighting fixture 10e and the outlet unit 20 are installed on the grid 10b, the outlet unit A gap is formed on both sides of 20. Such a gap can be filled by fitting an equipment panel 10g as shown in FIG. 3, for example. In addition, when installing the blower outlet unit 20 in the grid 10b, the structure which can be employ | adopted is not limited to the example demonstrated here. For example, depending on the amount of blown air flow allocated to the blower outlet unit 20, the lower surface of the blower outlet unit 20 may be designed so that the dimension of the long side matches one side of the grid 10b. In that case, the equipment panel 10g is omitted. Can do. Moreover, you may make it support the blower outlet unit 20 in the ceiling structure material 10a directly without passing through the lighting fixture 10e. Moreover, you may install another installation panel instead of the lighting fixture 10e. If the blower outlet unit 20 can be suitably supported by the grid 10b, the structure of the blower outlet unit 20 and its periphery can be changed as appropriate.

  In the present embodiment, the end duct 7 (see FIGS. 6 and 7) is eliminated as described above, and a system in which the conditioned air 3 is supplied from the air supply chamber C through the outlet unit 20 is adopted. Therefore, since the piping such as the terminal duct 7 in the conventional example is not connected to the air outlet unit 20, the weight of the air outlet unit 20 can be reduced. If the casing 20c is made of a lightweight member such as glass wool or rock wool, the air outlet unit 20 can be sufficiently provided by only the hanging tool 10d that supports the ceiling structural member 10a without providing a separate hanging tool or the like for the air outlet unit 20. Can be supported together with the ceiling structural member 10a.

  As shown in FIG. 1, a return air port 9 is provided at a lower position in the target area A (below the floor here), and the conditioned air 3 supplied from the outlet unit 20 installed on the ceiling 10 The air passes through a suction port 12 opened to 11 to the space under the floor and is returned from the return air port 9 to the air conditioner 1 through the return air duct 13 as return air 14.

  A return air temperature sensor 19 is installed in the middle of the return air duct 13, and the temperature of the return air 14 is input as a temperature signal 19a to a temperature adjustment circuit (not shown) of the control device 18. In the temperature adjustment circuit, a set temperature is set, and a deviation from an actually measured value of the temperature signal 19a input as a detected value from the return air temperature sensor 19 is calculated, and a set air volume value corresponding to the deviation is calculated as a control signal Input to each variable air volume unit 8 as 8d. In the variable air volume unit 8, the damper opening in the variable air volume unit 8 is controlled according to the deviation between the measured air volume that is derived from the measured value of the wind speed sensor provided in the variable air volume unit 8 itself and the set air volume value. Thus, the air volume in the variable air volume unit 8 is controlled based on the control signal 8d.

  Furthermore, in the case of the present embodiment, the fan 20b of the outlet unit 20 can individually control operations such as air volume and on / off for each fan 20b from the target area A side in the room. That is, the operation of the fan 20b is individually controlled on and off and the air volume is controlled by the control signal 20d input from the control device 18, and the control signal 20d is arranged in the target area A. Based on the operation signal 21 a input from the controller device 21 to the control device 18, it is input to the fan 20 b. At this time, the operation of the fan 20b may be performed by, for example, connecting one operation device 21 for each fan 20b and operating the operation of the fan 20b in the specific outlet unit 20 by the specific operation device 21. Alternatively, for example, the operation of the fans 20b in a plurality of or all the outlet units 20 in the target area A may be operated by one operating device 21. Moreover, you may enable it to operate the fan 20b of the same blower outlet unit 20 with the some operating device 21. FIG.

Alternatively, each operating device 21 may include a temperature sensor and a temperature setting device, and the fan 20b may be provided with a variable air volume mechanism. In this case, the detected value of the temperature sensor provided in each operation device 21 and the set value of the temperature setting device are input to an individual air volume control circuit (not shown) in the control device 18. The individual air volume control circuit calculates a target air volume in the fan 20b of each outlet unit 20 based on the temperature deviation between the set temperature signal and the temperature sensor measurement signal, and inputs the control signal 20d to the variable air volume mechanism of the fan 20b. And control the air volume. Such a method is particularly effective when a large number of operation devices 21 are installed in the target area A.
As the operation device 21, a controller used for a general air conditioner may be provided, for example, an information terminal device such as a PC, a smartphone, or a tablet assigned to a resident in the target area A. It can also be used.

  Here, although one block is illustrated as the control device 18 in FIG. 1, in an actual air conditioning system, for example, the control device 18 controls the air conditioner 1 and controls the fan 20. It may be provided separately from the apparatus. When an information terminal device is used as the operation device 21, the operation signal may be input via a network.

Input of the control signal 20d to the air outlet unit 20 may be performed using either a wireless method or a wired method, and various methods may be employed. Particularly preferably, power is supplied to the air outlet unit 20. Therefore, it can be performed by power line communication through a power line (not shown). The power line communication is a technology in which a signal is superimposed on an AC power supply such as AC100V supplied to the fan 20b of the air outlet unit 20 and communicates. As a device, a fan controller unit that controls and operates a fan motor, and processes signals And a power line communication unit, a blocking filter that insulates communication data (installed so as not to affect other devices connected to the same power supply system), and a power line communication interface. If a low frequency band (about 100 to 400 kHz) is used for the signal to be superimposed, the transmission speed can be increased to some extent, the influence of radio waves leaking from other electronic precision devices is small, and the power waveform can be superimposed well. It is easy to separate the signal (control signal 20d).
In this case, it is not necessary to separately provide a wireless communication device in the air outlet unit 20, and it is not necessary to install communication wiring or the like in addition to the power supply line. The wiring configuration between the outlet unit 20 and the control device 18 can be simplified, which contributes to securing the degree of freedom in arrangement of the outlet unit 20 as will be described later.

Thus, the control device 18 can operate the fan 20b of the outlet unit 20 in accordance with the operation signal 21a input from the operation device 21.
Further, the amount of air blown and the amount of heat treatment in the air conditioner 1 are controlled according to the total air supply amount of all the outlet units 20 installed in the target area A, the set temperature in the target area A, and the temperature of the return air 14. . That is, the return air 14 is conditioned air after heat is recovered in the target area A, and the deviation between the set temperature of the return air 14 and the actual temperature acquired as the temperature signal 19 a from the return air temperature sensor 19. Thus, the amount of heat supplied in the air conditioner 1 is controlled. The air volume in the blower of the air conditioner 1 is determined by conditions such as the number of operating fans 20b in the air outlet unit 20 provided in the target area A, or the total air volume. In the control device 18, the control signal 1 a is input to the air flow rate change device (inverter or the like) provided in the blower fan of the air conditioner 1 according to these values. The air volume of the variable air volume unit 8 is controlled based on the deviation between the set air volume calculated from the detected value of the temperature signal 19a and the measured air volume in the temperature adjustment circuit (not shown) of the control device 18 as described above. It is determined based on the total air volume at the downstream outlet unit 20.

  The control device 18 includes a load reset control circuit (not shown) in addition to the temperature adjustment circuit (not shown) and the individual air volume adjustment circuit (not shown). In the load reset circuit, the supply air supplied to each variable air volume unit 8 is cooled with respect to a control valve that controls the flow rate of the heat medium in the chilled water coil and the heating coil for the purpose of ensuring the minimum necessary ventilation amount. Control is performed such that the set supply air temperature is raised when it is too high, and the set supply temperature is lowered when it is too hot.

  Here, for convenience of explanation, one target area A, one branch duct 5 and one variable airflow unit 8 are illustrated, but one target area A, one branch duct 5 and one variable airflow unit 8 related to one air conditioner 1 are illustrated. Of course, the number of etc. may be larger than this. Further, the number of branch ducts 5, variable air volume units 8, air outlet units 20, and the like per target area A can be appropriately changed according to the size of the target area A, required air conditioning performance, and other conditions.

  In the air conditioning system of the present embodiment having the above-described configuration, it is possible to cope with load imbalance in the target area A by individually operating the air volume of the fan 20b of the outlet unit 20. As described above, in the conventional air conditioning system, a plurality of air outlets 6 are assigned to each control area corresponding to the variable air volume unit 8, and the air volume in each control area is totally controlled (see FIGS. 6 and 7). When the load was locally uneven in the target area A, it was difficult to maintain a uniform room temperature. On the other hand, in this embodiment, since the air volume can be individually controlled for each outlet unit 20, for example, a high-load region such as a device with large exhaust heat installed in a part of the target area A In the case where there is, the air volume is increased only for the air outlet unit 20 located in the vicinity of the high load area, and the air volume is decreased or turned off for the other air outlet units 20, thereby The conditioned air 3 can be supplied with a suitable air volume for both the other regions and the room temperature can be made uniform.

  In addition, when there are people in the target area A, each person can obtain a comfortable room temperature by operating the air volume of the nearby outlet unit 20 using the operation device 21. Thus, in the air conditioning system of the present embodiment, a local air volume operation that matches the situation in the target area A is possible.

  Furthermore, energy saving can also be aimed at for every blower outlet unit 20 regarding the air conditioning of the object area A by switching on / off of each fan 20b. For example, when there is a person only in a part of the target area A, it is not always necessary to supply the conditioned air 3 to the entire target area A, and it is sufficient to supply only the area where the person is present. However, according to the present embodiment, since the fan 20b can be individually switched on and off, the conditioned air 3 is supplied only to the necessary area, the supply to the unnecessary area is stopped, and the air conditioning is performed. This waste of energy can be prevented.

  As a measure for specifically realizing such an energy saving effect, for example, on / off of the fan 20b in the outlet unit 20 can be automatically switched according to the presence or absence of a person in the vicinity. For example, human sensors may be installed at various locations in the target area A, and the fan 20b of the nearby air outlet unit 20 may be stopped when a person leaves the seat. A timer function may be provided to stop the fan 20b of the outlet unit 20 when a certain time has elapsed after the unit 20 is last operated. When the latter is adopted, if there is a person in the target area A when the fan 20b is stopped, the operation of the fan 20b is operated from the operation device 21 by noticing the stop of the fan 20b. Alternatively, on / off of each fan 20b may be controlled by a schedule function that operates the fan 20b only from a certain time to a certain time.

  When it is assumed that a person from the target area A controls the air volume at the outlet unit 20 using the operating device 21 as described above, the temperature sensors 15, 16, and 17 in the region as in the above-described conventional example (FIG. 6, (See FIG. 7) is not necessarily required. This is because, instead of monitoring the state in the target area A by the area temperature sensor, a person can monitor and the required air volume of each outlet unit 20 can be directly determined. However, in the air conditioning system as in this embodiment, in addition to the operation by the operation device 21, an in-region temperature sensor may be provided separately.

  The blower outlet unit 20 may be provided with a damper 20e on the lower surface of the fan 20b, for example, as indicated by a one-dot chain line in FIG. 5, and the damper 20e may be opened when the fan 20b is turned on and closed. In this way, when the fan 20b is turned off, the upper opening of the outlet unit 20 is closed, and the conditioned air 3 in the target area A passes through the housing 20c and leaks into the air supply chamber C. Can be prevented. Therefore, it is effective when the target area A is a place that particularly dislikes air leakage. The opening / closing operation of the damper 20e may be controlled by a control signal from the control device 18 like the fan 20b. At this time, the input of the control signal to the damper 20e can be performed by power line communication. Although the case where the damper 20e is attached at a position where the upper opening can be closed is illustrated here, the attachment position of the damper 20e is not limited to this. For example, the damper 20e is attached to the outlet 20a so as to close the lower opening. You may attach in the position immediately above. In addition, as long as the flow path in the housing 20c can be closed when the fan 20b is off, the attachment position of the damper 20e may be anywhere.

  In the control device 18, when the air volume and on / off of each outlet unit 20 are changed, the amount of the conditioned air 3 sent out from the air conditioner 1 is determined based on the number of fans 20 b operating or the total air volume. In addition, the air volume in the variable air volume unit 8 is equal to the total air volume of the downstream fan 20b, and the air supply chamber C is filled with the conditioned air 3 to ensure smooth air conditioning in the target area A.

  Here, the case where the operation signal 21a is input from the operation device 21 to the control device 18 and the control signal 20d is input to the outlet unit 20 based on the operation signal 21a in the control device 18 has been described as an example. In addition, for example, a control signal can be directly input from the operation device 21 to the outlet unit 20. Any configuration is possible as long as the air volume in the outlet unit 20 can be controlled by an operation input to the operation device 21.

  Further, in this embodiment, the method of supplying the conditioned air 3 from the air supply chamber C as described above is adopted, and the air outlet unit 20 is arranged on the grid 10b of the ceiling 10 configured as a grid system ceiling. doing. This eliminates the end duct 7 (see FIGS. 6 and 7) as in the conventional example to reduce material costs and labor for installing the piping, and realizes a high degree of freedom regarding the arrangement of the outlet unit 20. doing.

  That is, in the conventional method of guiding the conditioned air 3 to the outlet 6 by the end duct 7 (see FIGS. 6 and 7), if the arrangement of the outlet 6 is to be changed, the arrangement of the end duct 7 is changed. In this embodiment, it is only necessary to move the position of the air outlet unit 20 on the ceiling 10, and it is not necessary to modify the piping. Moreover, if the air outlet unit 20 is sufficiently light as described above, it is not necessary to use a separate hanging tool or the like in addition to the hanging tool 10d (see FIG. 3) to support the air outlet unit 20, for example, simply The arrangement change is completed simply by exchanging the positions of the outlet unit 20 and the panel 10b.

  For this reason, for example, when there is a high load area, for example, equipment with large exhaust heat is concentrated in the target area A, in addition to changing the air volume of the outlet unit 20 in the vicinity as described above, It is possible to easily cope with the arrangement of the air outlet units 20 in the vicinity of the high load area. Further, when the position of a partition (not shown) or the like in the target area A, the load distribution state, or the like changes later, the arrangement of the outlet unit 20 can be easily changed accordingly.

  Thus, according to the present embodiment, for example, when there is a place where a large amount of airflow of the conditioned air 3 is required indoors, the grid 10b of the ceiling 10 in the vicinity thereof is selected, and the outlet unit 20 is mounted. The airflow of the conditioned air 3 can be guided by placing. Even after the air conditioning system as in the present embodiment is once installed in the target area A and started to be used, the panel 10c installed on the grid 10b is appropriately removed and blown instead in response to the bias or increase of the thermal load. It is possible to flexibly cope with the problem by installing the outlet unit 20 and adding the outlet unit 20 or changing the position of the existing outlet unit 20.

  Moreover, if power line communication is adopted for the input of the control signal 20d to the air outlet unit 20 as described above, the wiring associated with the air outlet unit 20 is only the power cable. In changing the position, the limitation due to wiring can be reduced. That is, it is not necessary to carry out complicated wiring in designing or changing the arrangement of the air outlet unit 20, and minimal effort is required. In this way, the degree of freedom regarding the position of the air outlet is ensured, and it is possible to easily cope with the bias of the indoor heat load.

  Further, when the method of supplying the conditioned air 3 from the air supply chamber C as in this embodiment is adopted, the end duct 7 (see FIGS. 6 and 7) can be omitted as described above, the main duct 4 and The length required for the branch duct 5 is also shortened. Thereby, the overall length of the air supply duct 2 is shortened, the pressure loss in the air supply duct 2 is reduced, and the pressure loss in the outlet 20 is also reduced, so that the conditioned air 3 required for the air conditioner 1 is conveyed. The energy saving effect of reducing the power of can be expected.

  As described above, in this embodiment, the air conditioner 1 that sends out the conditioned air 3, the air supply duct 2 that guides the conditioned air 3 sent out from the air conditioner 1 toward the target area A, and the air supply An air supply chamber C installed on the downstream side of the duct 2, a plurality of air outlets 20 for supplying the conditioned air 3 sent from the air supply duct 2 to the air supply chamber C to the target area A, and the air outlets 20 The fan 20b that is installed and sends out the conditioned air 3 to the target area A is provided, and the operation of the fan 20b is configured to be individually controllable for each fan 20b. Air volume operation is possible. Moreover, while being able to reduce the material cost and work effort which concern on installation of piping, the high freedom degree regarding arrangement | positioning of the blower outlet 20 can be ensured.

  Further, in the present embodiment, the air supply chamber C is a space located above the ceiling 10 in the target area A, and the ceiling 10 forms a grid 10b by a ceiling structural member 10a that forms a ceiling foundation as vertical and horizontal edges. The air outlet 20 is configured as an air outlet unit including a fan 20b above the air outlet 20a facing the target area A, and each air outlet unit 20 is configured to be installed in one grid 10b. Therefore, it is possible to secure a higher degree of freedom with respect to the arrangement of the air outlet 20.

  Moreover, in a present Example, the other ceiling equipment 10e can be installed in the single grid 10b with the blower outlet unit 20a.

  Further, in this embodiment, it is possible to provide an operating device 21 that is linked to each fan 20b of the outlet unit 20 and that can individually control the operation of the fan 20b.

  Further, in the present embodiment, the operation of the fan 20b can be controlled by power line communication. In this way, it is possible to reduce the labor related to the wiring in designing and changing the arrangement of the air outlet 20.

  Further, in the present embodiment, it is possible to provide a damper 20e that closes the flow path in the housing 20c when the fan 20b is turned off. In this way, the conditioned air 3 in the target area A is supplied to the housing 20c. Leakage through the interior to the supply chamber C can be prevented.

  In the present embodiment, the operation of the damper 20e can be controlled by power line communication.

  Therefore, according to the present embodiment, the air volume of the conditioned air supplied to the target area can be locally controlled.

  The air conditioning system of the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Air supply duct 3 Air-conditioning air 10 Ceiling 10a Ceiling structural material 10b Grid 10e Ceiling equipment (lighting fixture)
20 Air outlet (air outlet unit)
20a Blowing section 20b Fan 20e Damper 21 Operating device A Target area C Air supply chamber

Claims (7)

An air conditioner that delivers conditioned air;
An air supply duct for guiding the conditioned air sent from the air conditioner toward the target area;
An air supply chamber installed downstream of the air supply duct;
A plurality of outlets for supplying conditioned air sent from the air supply duct to the air supply chamber to a target area;
A fan installed at the outlet, for sending conditioned air in the air supply chamber to a target area;
An air conditioning system characterized in that the operation of the fan is configured to be individually controllable for each fan. The air supply chamber is a space located above the ceiling of the target area;
The ceiling forms a grid with a ceiling structural material that constitutes a ceiling foundation as a vertical and horizontal edge,
The air outlet is configured as an air outlet unit provided with the fan above the air outlet facing the target area,
2. The air conditioning system according to claim 1, wherein each of the air outlet units is configured to be installed in one grid.   The air conditioning system according to claim 1 or 2, wherein another ceiling equipment device can be installed together with the air outlet unit in one grid.   The air conditioning system according to any one of claims 1 to 3, further comprising an operation device that is linked to each fan of the air outlet unit and that can individually control the operation of the fan.   The air conditioning system according to any one of claims 1 to 4, wherein the operation of the fan is controlled by power line communication.   The air conditioning system according to any one of claims 1 to 5, further comprising a damper that closes a flow path in the housing when the fan is turned off.   The air conditioning system according to claim 6, wherein the operation of the damper is controlled by power line communication.

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