JP7217594B2 - air conditioning system - Google Patents

Description

The present invention relates to an air conditioning system that uses both radiant air conditioning and convective air conditioning.

Conventionally, cooling and heating are sometimes used as health air conditioning for residents in buildings for business and commercial use. Convective air conditioning (convective air conditioning) is the mainstream in which the air is blown out into the room and circulated between the air conditioner and the target space to condition the air in the target space. In other words, due to the density difference due to the temperature difference between the supply air that has been temperature-controlled by the air conditioner and the indoor air that has been heat transferred from the indoor heat load, the movement such as eddy currents is generated. Convective air conditioning is where most of the heat from the supply air is transferred to the room air as convective heat transfer. On the other hand, in recent years, radiant air conditioning (also called radiant air conditioning) that cools or heats the ceiling panel facing the target space and air-conditions the target space by radiating heat has appeared. . Compared to convection air conditioning, this type of radiant air conditioning can reduce the amount of air supply and return air by directly giving radiant heat as electromagnetic waves to the residents in the target space without being carried by air currents, and can reduce the power to transport air. In addition, it has the advantage of reducing the feeling of a draft (strong air currents that make people feel uncomfortable if they are hit for a long time) when residents in the target space are directly exposed to the air currents of the conditioned air.

The radiant air conditioning system cools and heats the ceiling panel by flowing a heat medium such as cold water or hot water through the ceiling panel, or cools and heats the ceiling panel by sending air for temperature adjustment into the space behind the ceiling. There is a system that cools and heats the panel. In the case of the latter method, a configuration may be adopted in which the air sent into the space above the ceiling is supplied into the target space through a hole or the like opened in the ceiling panel. can be considered as a combination system of radiant air conditioning and convection air conditioning (radiant/convection combined air conditioning system).

The air conditioning control system described in Patent Document 1 below can be classified as such a radiation/convection combined type air conditioning system. In the system described in FIGS. 1 and 2 of Patent Document 1, an air conditioner is installed in the ceiling space, and the ceiling plate is cooled by the temperature-controlled air supplied from the air conditioner to the ceiling space. The target room is radiantly air-conditioned.
After cooling the ceiling plate, the temperature-controlled air in the space above the ceiling, which is the air supply plenum chamber, is supplied to the air-conditioned room through the holes in the ceiling plate, which is a perforated metal plate. Part of it is used as radiant heat, so after convection heat transfer to the ceiling plate in the ceiling space, it is supplied as air supply to the room to be air-conditioned through the holes in the ceiling plate. Convective heat is transferred to become indoor air in the room to be air-conditioned. The amount of indoor air in the room to be air-conditioned returns to the air conditioner through the return air duct from the return air port provided on the ceiling plate, and is supplied again to the space above the ceiling as temperature-adjusted air. .

JP 2014-228241 A

However, in the radiant air-conditioning system as described above, if the temperature of the ceiling plate becomes uniform due to the radiant heat from the ceiling plate on the upper surface of the target space, the radiant heat to the object to be cooled of the same flat area in the room is also increased. Although it is easy to provide uniform air conditioning effects, it has the disadvantage that it is difficult to deal with any unbalanced requirements for the air conditioning effect in the target space. For example, in a state where the target space is generally uniformly air-conditioned, if some people in the target space request a stronger heating and cooling effect, convection air conditioning will reduce the airflow to the corresponding area. It can be easily dealt with by increasing. However, in the case of radiant air conditioning, it is difficult to locally cool and heat only the ceiling panel located above the relevant area.

This is the same for both radiation and convection type air conditioning systems. For example, in the system described in Patent Document 1, even though convection air conditioning is used in combination with radiant air conditioning, temperature-controlled air is leaked from the holes in the ceiling plate into the room to be air-conditioned. This is because the temperature-adjusted air is only supplied little by little, and there is no mechanism for positively supplying the temperature-adjusted air as conditioned air to the air-conditioned rooms or changing the amount of supply depending on the location.

SUMMARY OF THE INVENTION In view of such circumstances, it is an object of the present invention to provide an air-conditioning system that can locally adjust the air-conditioning effect in a target space by means of convection air-conditioning while performing radiation air-conditioning.

The present invention provides an air conditioner that delivers conditioned air,
an air supply chamber, which is a space adjacent to the target space and located above the ceiling of the target space, into which the conditioned air supplied from the air conditioner is sent;
a non-perforated temperature regulating panel installed in the ceiling between the target space and the air supply chamber, the temperature regulating panel being cooled or heated by conditioned air to provide radiative air conditioning to the target space;
an air outlet for supplying the conditioned air sent into the air supply chamber to the target space; and
an air outlet unit comprising a fan installed above the air outlet for sending conditioned air in the air supply chamber to a target space;
a pressure regulating port that communicates the air supply chamber with a target space and forms an air flow in the air supply chamber that causes the regulated air to contact the temperature control panel even when at least all the fans of the blowout unit are stopped; ,
a return air path for returning the air in the target space to the air conditioner as return air by an air conditioner built-in fan adjacent to the target space on a different side from the air supply chamber ,
The operation of the fans of the outlet unit is configured to be individually controllable from within the target space for each fan,
The air conditioner built-in fan includes an air conditioner fan air volume variable mechanism,
Depending on the number and state of the fans of the outlet unit whose operation is individually controlled by the occupant from the target space, the air volume change to the air conditioner built-in fan of the air conditioner fan air volume variable mechanism is determined.
This relates to an air conditioning system characterized by:

The present invention provides an air conditioner that delivers conditioned air,
an air supply chamber, which is a space adjacent to the target space and located above the ceiling of the target space, into which the conditioned air supplied from the air conditioner is sent;
a non-perforated temperature regulating panel installed in the ceiling between the target space and the supply chamber, the temperature control panel being cooled or heated by conditioned air to provide radiative air conditioning to the target space;
an air outlet for supplying the conditioned air sent into the air supply chamber to the target space; and
an air outlet unit comprising a fan installed above the air outlet for sending conditioned air in the air supply chamber to a target space;
a pressure regulating port that communicates the air supply chamber with a target space and forms an air flow in the air supply chamber that causes the regulated air to contact the temperature control panel even when at least all the fans of the blowout unit are stopped; ,
a return air path that is formed by a duct isolated from the air supply chamber and returns the air in the target space to the air conditioner as return air by an air conditioner built-in fan ,
The operation of the fans of the outlet unit is configured to be individually controllable from within the target space for each fan,
The air conditioner built-in fan includes an air conditioner fan air volume variable mechanism ,
Depending on the number and state of the fans of the outlet unit whose operation is individually controlled by the occupant from the target space, the air volume change to the air conditioner built-in fan of the air conditioner fan air volume variable mechanism is determined.
This relates to an air conditioning system characterized by:

In the air conditioning system of the present invention, a flow rate control valve that proportionally adjusts the flow rate of water that is a heat medium for the cold water coil or hot water coil or cold/hot water coil built into the air conditioner;
a return air thermometer located in the return air path;
a calculator comprising a temperature controller circuit for calculating a control signal for operating the flow control valve based on the deviation between the measured value of the return air thermometer and the set value of the return air temperature;
A variable air volume unit having a mechanism for measuring its own air volume with a wind speed sensor is provided on the path between the air conditioner and the air supply chamber,
A constant air volume can be supplied to the air supply chamber when all the air outlet units are stopped even if the degree of clogging of the filter incorporated in the air conditioner changes,
The computer may send a control signal to the air conditioner fan air volume variable mechanism to reduce the air volume when the damper of the variable air volume unit maintains an opening less than a predetermined opening for a predetermined time. can.

The air conditioning system of the present invention uses an axial flow fan in which the airflow passes mainly in the axial direction of the impeller as the fan of the outlet unit, and the airflow is boosted by the lift force of the blades,
Even if the pressure in the air supply chamber is low when the fan of the outlet unit is stopped, it is possible to allow leakage airflow to the target space.

In the air conditioning system of the present invention, the ceiling includes a grid made up of ceiling structural materials, and the temperature control panel divides the ceiling into a large number of grids divided by the grid made up of the ceiling structural materials. The air outlet is configured as an air outlet unit provided with the fan above the air outlet facing the target space, and the air outlet unit and the ceiling panel are each one piece It may be configured to be installable within the grid.

The air conditioning system of the present invention includes a flow control valve for proportionally adjusting the flow rate of water serving as a heat medium for the cold water coil or the hot water coil or the cold water coil built in the air conditioner, and a return air thermometer located in the return air path. and a calculator comprising a temperature controller circuit for calculating a control signal based on the deviation between the measured value of the return air thermometer and the set value of the return air temperature, the measured value of the return air thermometer and the return air The flow control valve can be controlled according to the control signal calculated based on the deviation from the temperature set value.

In the air conditioning system of the present invention, a plurality of the return air thermometers are installed in the return air path, the computer averages the measured values of the plurality of return air thermometers, and the result is used as the flow control valve. can be used to control

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

According to the air-conditioning system of the present invention, it is possible to produce an excellent effect of being able to locally adjust the air-conditioning effect in the target space by convection air-conditioning while performing radiant air-conditioning.

1 is a schematic diagram illustrating an example of an air conditioning system in accordance with the practice of the invention; FIG. FIG. 4 is a schematic plan view showing the arrangement of air supply ducts and outlets in the embodiment of the present invention; FIG. 4 is an exploded perspective view showing the configuration of the ceiling and outlets in the embodiment of the present invention; FIG. 4 is a side view showing the form of the outlet in the embodiment of the present invention, corresponding to the view taken along line IV-IV in FIG. 3; 1 is a perspective view showing the form of a grid panel installed on a ceiling in an embodiment of the present invention; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 show an example of the form of an air conditioning system according to the implementation of the present invention. In the air conditioning system of this embodiment, conditioned air 3 is sent out from an air conditioner 1 outside the target space S through an air supply duct 2 toward a target space S such as a room in an office building. The air conditioner 1 includes an air conditioner built-in fan 1b that draws in return air and sends it out as adjusted air 3, an air conditioner fan air volume variable mechanism 1c that changes the air volume by changing the rotation speed of the air conditioner built-in fan 1b such as an inverter, A coil 1d built in the air conditioner 1 and serving as a cold water coil, a hot water coil, or a cold/hot water coil that indirectly exchanges heat with water as a heat medium and return air to control the temperature of the conditioned air 3, and a heat medium to the coil 1d. and a filter 1f located immediately after the return air intake port of the air conditioner 1. The supply air duct 2 includes a main duct 4 extending from the air conditioner 1 and a branch duct 5 branching from the main duct 4 toward the target space S.

The ceiling 6 of the target space S includes a ceiling panel 7 (see FIG. 3) that functions as a temperature control panel for performing radiant air conditioning to the target space S, and supplies conditioned air 3 to the target space S as indoor air 8. A blowout port 9 is provided. In the case of this embodiment, each outlet 9 is configured as an outlet unit as will be described later. Further, in this embodiment, an air flow is formed in the air supply chamber C so as to bring the regulated air 3 into contact with the ceiling panel 7 as a temperature regulating panel even when at least all of the fans 9b, which will be described later, are stopped, and A pressure regulating port 10 is provided for releasing the pressure in the air supply chamber C, and the air supply chamber C and the target space S are communicated with each other through the pressure regulating port 10 in addition to the outlet unit 9 . The configuration and operation of the ceiling panel 7, the outlet unit 9, and the pressure regulating port 10 will be described in detail later, but these facilities allow the air conditioning system of this embodiment to use both radiant air conditioning and convection air conditioning. . That is, the ceiling panel 7 is cooled and warmed by the conditioned air 3 supplied to the air supply chamber C, and the target space S is radiantly air-conditioned, and the conditioned air supplied as the indoor air 8 from the outlet unit 9 3 performs convection air conditioning.

A space above the ceiling 6 is set as an air supply chamber C, and the air supply chamber C is adjacent to the target space S via the ceiling 6 and the ceiling panel 7 constituting the ceiling 6 . The surface facing the ceiling panel 7 defining the air supply chamber C is the roof, the upper floor slab, or the double ceiling, but this surface is insulated to prevent heat from escaping. The end of a branch duct 5, which is the discharge side of the air supply duct 2, is connected to the air supply chamber C so that the regulated air 3 supplied from the air conditioner 1 is sent. The space above the ceiling 6 set in the air supply chamber C is designed so that the entire space can withstand the supply pressure. is prevented from leaking out of the air supply chamber C.

The branch duct 5 is provided with a variable air volume unit 11 at a position in front of the target space S so that the amount of the regulated air 3 sent into the air supply chamber C through the branch duct 5 can be controlled. . The variable air volume unit 11 is a device called VAV (Variable Air Volume) or the like, and is a damper unit equipped with a mechanism for measuring its own air volume with an air velocity sensor (not shown).

As shown in FIG. 1, a return air port 12 is provided at a lower position in the target space S (here, under the floor). The indoor air 8 in the target space S passes through the suction port 14 opened in the floor 13 to the space under the floor, passes through the return air port 12 and the return air duct 15, and is returned to the air conditioner 1 as return air 16. It has become. A return air path extends from the suction port 14 to the return air port 12 and the return air duct 15 . In addition, a return air thermometer 18 is required at least in the return air route, but a plurality of return air thermometers 19 are installed in the return air route instead of or in addition to the return air thermometer 18. good too.

The structures of the ceiling 6, and the ceiling panel 7, the outlet unit 9, and the pressure regulating port 10 that constitute the ceiling 6 will be described. In the case of this embodiment, the ceiling 6 is configured as a grid-type system ceiling, and as shown in FIG. , the ceiling panel 7 and other ceiling equipment can be installed by fitting them. The ceiling structural material 6a is a building material sold as a member for system ceilings under the name of, for example, a T-bar, etc., and is suspended from above by a hanger 6c to form a ceiling base, and is installed on the grid 6b. The entire ceiling 6 is supported together with the ceiling panel 7 and other fixtures. When installing fixtures other than the ceiling panel 7 on the grid 6b, if the weight of the fixtures is sufficiently small, the fixtures may be supported together with the ceiling structural material 6a by the hangers 6c. If the weight is greater than a certain level, it is necessary to separately provide a hanger or the like (not shown) for directly hanging the equipment in order to support the equipment.

The ceiling panel 7 is a panel designed so that the dimensions of the four sides exactly match the four sides of one grid 6b, and one ceiling panel 7 per grid 6b is placed on the ceiling structure material 6a on the four sides. installed in the form of

The ceiling panel 7 is made of a material with high thermal conductivity (for example, metal such as iron or aluminum) so as to act as a temperature control panel for radiant air conditioning. Among the surfaces of the ceiling panel 7, at least the lower surface corresponding to the target space S side is not a smooth and glossy surface, but is coated with resin paint or the like. Well done. In this way, the plurality of ceiling panels 7 installed between the air supply chamber C and the target space S adjacent to each other in the vertical direction and fitted in each grid are in contact with the regulated air 3 in the air supply chamber C on the upper surface, and are regulated. It is cooled or heated by exchanging heat with the air 3, and the target space S is radiantly air-conditioned on the lower surface.

Each outlet unit 9 is configured to be installable in one grid 6b, and the entire outlet unit 9 having a fan 9b above the outlet 9a can be supported by the ceiling structural member 6a. ing. Specifically, as shown in FIGS. 3 and 4, openings are provided in the upper and lower sides of a box-shaped housing 9c, a fan 9b is installed in the upper opening, and an airflow is provided in the lower opening facing the target space S. The regulated air 3 (see FIG. 1) in the air supply chamber C is drawn in by the fan 9b from above the housing 9c and sent out from the blowout part 9a to the target space S below. It's like The blow-out part 9a is an air control opening made up of a member for distributing air having a plurality of blades called, for example, Anemostat (registered trademark) or a diffuser. Here, as the fan 9b, it is preferable to use an axial flow fan in which the airflow mainly passes through the impeller in the axial direction of the impeller and the pressure is increased by the lifting force of the blades.

In this embodiment, the outlet unit 9 is installed in the grid 6b together with a pair of lighting fixtures 6d, which are other ceiling fixtures. The length of the long side of the lighting fixture 6d matches one side of the grid 6b, and a pair of lighting fixtures 6d are arranged along two opposite sides of one grid 6b. Three sides of each lighting fixture 6d other than the side in contact with the outlet unit 9 are supported by the ceiling structural member 6a forming the grid 6b.

On the other hand, the outlet unit 9 is designed so that the dimension of the short side of the lower surface matches the difference between one side of the grid 6b and twice the short side of the lighting device 6d, and is supported within one grid 6b. The outlet unit 9 can be arranged between the pair of lighting fixtures 6d. Here, the side of the lighting fixture 6d that is in contact with the outlet unit 9 is provided with a plate-like projecting portion 6e that projects toward the outlet unit 9 on the lower surface. The protruding portion 6e is arranged along the long side of the outlet unit 9 so as to span between two ceiling structural members 6a perpendicular to the long side. The outlet unit 9 sandwiched between the two lighting fixtures 6d is supported in the grid 6b in such a manner that the two long sides of the lower surface are placed on the projecting portions 6e of the lighting fixtures 6d on both sides.

The dimensions of the outlet unit 9 vary depending on the required blowing air volume. In the example shown here, the lower surface of the outlet unit 9 has a longer side dimension smaller than one side of the grid 6b. There are gaps on both sides of 9. Such a gap can be filled by fitting a facility panel 6f as shown in FIG. 3, for example. In addition, in installing the outlet unit 9 on the grid 6b, the configuration that can be adopted is not limited to the example described here. For example, depending on the air volume allocated to the outlet unit 9, the lower surface of the outlet unit 9 may be designed so that the long side dimension matches one side of the grid 6b, but in that case, the facility panel 6f may be omitted. can be done. Alternatively, the outlet unit 9 may be directly supported by the ceiling structure member 6a without the lighting equipment 6d. Also, another equipment panel may be installed instead of the lighting device 6d. As long as the outlet unit 9 can be suitably supported on the grid 6b, the configuration of the outlet unit 9 and its surroundings can be changed as appropriate.

As described above, in the air conditioning system of this embodiment that uses both radiant air conditioning and convection air conditioning, the outlet unit 9 performs convection air conditioning. At that time, a space adjacent to the target space S through the ceiling 6 (a space behind the ceiling) serves as an air supply chamber C, and the adjusted air 3 is supplied from the air supply chamber C through the outlet unit 9 . In such a system, since it is not necessary to connect an air supply duct to each individual outlet unit 9, the weight of the outlet unit 9 can be kept small. If the housing 9c is made of a lightweight member such as glass wool or rock wool, the blower outlet unit 9 can be sufficiently operated by the hanger 6c supporting the ceiling structural member 6a without providing a separate hanger or the like for the blower outlet unit 9. can be supported together with the ceiling structural member 6a. In the air conditioning system of this embodiment that uses both radiant air conditioning and convective air conditioning, a predetermined number of ceiling panels are basically defined as modules, and the outlet unit 9 is installed for each module. Even when the fan is stopped, the conditioned air 3 is leaked from the air supply chamber to the target space through the gaps in the fan impeller. , heat transfer between the conditioned air, which is gas, and all the ceiling panels 7, which are solid, proceeds well.

Further, as shown in FIGS. 1 and 2, a pressure adjusting port 10 is provided at a predetermined position of the ceiling 6. As shown in FIG. This is because an air flow is formed in the air supply chamber C so that the regulated air 3 is brought into contact with the ceiling panel 7 as a temperature adjustment panel even when at least all of the fans 9b, which will be described later, are stopped. This is a configuration for releasing the pressure of to the target space S as required.

In the air conditioning system using both the radiant type and the convective type as described above, it is necessary to flow a certain amount of conditioned air 3 into the air supply chamber C in order to cool and warm the ceiling panel 7 which is a temperature control panel. . At this time, the circulation of air takes into account the minimum blowing volume narrowed down by the air volume variable mechanism 1c of the air conditioner built-in fan 1b of the air conditioner 1, and the blockage of the air conditioner built-in filter by the wind speed sensor of the air volume variable unit 11. The air flow is maintained by the sum of leaked air flows from the fans 9b provided in the outlet units 9, or by adding the amount of air released through the pressure regulating ports 10, at least the ceiling panel 7 Adjusted air volume 3 necessary for appropriately cooling and heating is supplied from variable air volume unit 11 .

Here, depending on the operation status of the air outlet unit 9, an arbitrary air outlet unit 9 out of the air outlet units 9 is individually activated by the occupant of the target space, or a weak or strong air volume is selected, and the minimum airflow The total air volume may increase more than the air volume. In that case, the operating state of each outlet unit 9 is taken out as a signal from the power control panel of the outlet unit 9 (not shown) and sent to the control device 17, which is a computing machine. The total increased air volume is calculated, and a signal for increasing the air volume is sent to the air conditioner fan air volume variable mechanism 1c in a stepwise or proportional manner to match the increase, thereby increasing the air volume of the air conditioner built-in fan. Therefore, even in such a case, the amount of blown air does not become less than the minimum amount, and by releasing a predetermined amount of the regulated air 3 from the pressure regulating port 10 to the target space S side, the ceiling panel 7, which is a temperature regulating panel, can be blown. Conditioned air, which is a heat carrier, is brought into contact with most of them, and good heat transfer can be maintained.

A portion of the ceiling 6 that is set as the pressure adjustment port 10 is provided with a lattice panel 10a as shown in FIG. The lattice panel 10a is a square panel whose dimensions are set according to the grid 6b (see FIG. 3) constituted by the ceiling structural material 6a, and a plurality of belt-like members are vertically and horizontally arranged so that each of them forms a vertical plane. (In addition, in FIG. 5, only a part of the corners of the grid forming the grid panel 10a is shown). By installing such a lattice panel 10a instead of the ceiling panel 7 in a part of the grid 6b of the ceiling 6, the pressure regulating port 10 that communicates the air supply chamber C and the target space S is set.

At the pressure regulating port 10, the regulated air 3 is blown out according to the pressure difference between the supply chamber C and the target space S regardless of the required air volume in the target space S nearby. The area near the pressure regulating port 10 is not suitable for applications requiring very strict (or flexible) air conditioning. For example, if the target space S is a room in an office building, it is preferable to arrange a bookshelf or the like that is used infrequently as far as possible from the branch duct 5 of the air supply duct 2 of the air conditioner 1 .

Also, depending on the configuration and operating conditions of the outlet unit 9, the pressure regulating port 10 may not be installed. For example, among the air outlet units 9, the fans 9b of the predetermined number of air outlet units 9 are always operated at a predetermined minimum air volume, such as weak, at a location as far as the branch duct 5 of the air supply duct 2 of the air conditioner 1 is. , it is possible to ensure the minimum circulation of air for radiant air conditioning even without the pressure regulating port 10 . The air leakage from the outlet unit 9 and the air volume due to the minimum air volume operation of some predetermined fans 9b are insufficient for heat transfer with the regulated air as a heat medium for the entire ceiling panel 7 as a temperature control panel. If the possibility is considered, the pressure regulating port 10 may be installed on the ceiling 6 .

The operation of the air conditioning system of this embodiment is controlled by the controller 17 (see FIG. 1). The control device 17 inputs and calculates the signals of various parts of the air conditioning system (for example, air temperature, air volume, operation status of equipment, etc.), and operates the air conditioner fan air volume variable mechanism of the air conditioner built-in fan 1b that is the operating device. 1c, the flow control valve 1e, the variable air volume unit 11, and the fan 9b, and may output monitoring information to an external monitoring device.

A return air temperature sensor 18 is installed in the middle of the return air duct 15 to measure the temperature of the return air 16 . The detected temperature value is input to the temperature adjustment circuit of the controller 17 as the temperature signal 18a.

In the temperature adjustment circuit, the return air temperature returned after processing the heat load in the target space S conforms to the set temperature of the target space S, and if this return air temperature is maintained at the set return air temperature Since the heat treatment by the supplied air is successful, a control signal calculated based on the deviation between the temperature value detected as the return air temperature and the return air set temperature is sent to the flow control valve 1e of the coil 1d for heat exchange. You have to control the amount. As a result, the supply air temperature is determined as a result of heat exchange according to the heat load, and the adjusted air 3 whose supply air temperature corresponds to the load through the variable air volume unit 11 installed in the branch duct 5 of the supply air duct. is blown. For example, when the detected value of the temperature signal 18a is higher than the set value during cooling, the amount of heat exchanged by the coil 1d is increased by opening the flow control valve 1e, and as a result, the supply temperature of the regulated air 3 decreases. to lower the temperature of the ceiling panel 7. Further, when the detected value of the temperature signal 18a is lower than the set value, the temperature of the ceiling panel 7 is raised by adjusting the supply temperature of the conditioned air 3 to be raised.

Alternatively, as shown by the dashed line in FIG. 1, return air temperature sensors 19 are provided at appropriate positions under the floor where the return air 16 flows, and the return air temperature after processing the indoor heat load is measured at each position. , the temperature signal 19 a may be input to the control device 17 . In this case, a measurement signal based on the measurement value of each return air temperature sensor 19 is input to the control device 17, and in the return air temperature adjustment circuit of the control device 17, for example, an average value obtained by averaging the measurement values at each position, or The temperature of the conditioned air 3 may be adjusted according to calculated values such as maximum or minimum temperature values.

Furthermore, in the case of the present embodiment, the fan 9b of the air outlet unit 9 can be individually controlled from the side of the target space S, which is a room, to individually control the operation such as on/off and the blowing state such as strong or weak. there is That is, the operation of the fan 9b is performed by operating the operation and the air blowing state of the fan 9b assigned to each operation device 20 from the operation device 20 installed at each position in the target space S, which is a room, and transmitting the signal. From the outlet unit power control board (not shown), it is transmitted to the operation air volume switching circuit of the fan 9b through the control line to control the operation. Alternatively, when the outlet unit power control board circuit is built in the control device 17, the fan 9b assigned to one of the operation devices 20 from the operation device 20 installed at each position of the target space S which is the room After operating the operation and air blowing state of the fan 9b and inputting the signal to the control device 17, the operation and air blowing state of the fan 9b are individually controlled by the control signal 9d that is calculated and output. . At this time, the operation of the fan 9b is performed by, for example, linking one operating device 20 to each fan 9b so that the operation of the fan 9b in a specific outlet unit 9 is operated by the specific operating device 20. Alternatively, for example, one operating device 20 may be used to operate the fans 9b in a plurality of or all the outlet units 9 in the target space S.

As the operation device 20, a controller such as that used for a general fan coil or ventilation fan may be provided, or for example, an information terminal such as a PC, a smartphone, or a tablet assigned to a person in the target space S. A device is also available.

Here, although one block is shown as the control device 17 in FIG. It may be provided separately from the device. Further, when an information terminal device is used as the operation device 20, the input of the operation signal 20a may be performed via a network. It is also possible to use relay devices, slave devices, etc. (not shown) for various types of communication. As long as the operation and control of each device as described here can be suitably performed, the configuration of the actual device related to the control system may be changed as appropriate.

The input of the control signal 9d to the outlet unit 9 may be performed using either a wireless or wired method, and various methods may be employed. This can be performed by power line communication via a power supply line (not shown). The power line communication is a technique of superimposing a signal on an AC power supply (general AC 100V or the like can be used) supplied to the fan 9b of the outlet unit 9, and as a device, controls and operates a fan motor. Equipped with equipment such as a fan controller, a power line communication unit that processes signals, a blocking filter that isolates communication data (installed so as not to affect other devices connected to the same power supply system), and a power line communication interface. ing. By using a low frequency band (about 100 to 400 kHz) 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 equipment is small, and the power waveform can be superimposed well. It is also easy to separate the signal (control signal 9d).

With this configuration, there is no need to separately provide a device for wireless communication in the outlet unit 9, and there is no need to install communication wiring or the like in addition to the power supply line. The wiring configuration between the outlet unit 9 and the control device 17 can be simplified, which also contributes to securing the degree of freedom in arranging the outlet unit 9 as described later.

Thus, the control device 17 can operate the fan 9b of the outlet unit 9 according to the operation signal 20a input from the operation device 20. FIG. In addition, depending on the total amount of air in the outlet unit 9, the amount of air supplied in the variable air amount unit 11 on the upstream side is also appropriately adjusted by the control signal 11a.

Thus, in the air conditioning system of this embodiment, the ceiling panel 7, which is a temperature control panel, performs radiant air conditioning, while the outlet unit 9 installed on the ceiling 6 also performs convection air conditioning. . At that time, since the air volume of each air outlet unit 9 can be individually operated, for example, some people in the target space S may request strong air conditioning with a drafty feeling, or a part of the target space S may If there is an area that requires a particularly strong air-conditioning effect compared to others, such as when equipment that emits a large amount of heat is installed, local air volume control is performed for a specific area according to the conditions in the target space S. (For example, the regulated air 3 is supplied from the nearby outlet unit 9 at a relatively large amount).

Further, in the case of this embodiment, the air outlets responsible for convection air conditioning are configured as the air outlet units 9 installed on the grid 6b of the ceiling 6 as described above. These outlet units 9 are not connected to individual ducts or the like, and are controlled using power line communication, so wiring is only a power line, and each has a lightweight and highly independent configuration. Therefore, when the distribution of air-conditioning effect requests changes due to a change in the layout of the target space S, it is possible to respond by switching the operation with the operation device 20 in the room. Since the air outlet units 9 are placed on the ceiling 6, the arrangement of the air outlet units 9 on the ceiling 6 can be freely changed.

In other words, if the arrangement of the outlet unit 9 and the pressure regulating port 10 is to be changed, the only construction procedure is to move their positions on the ceiling 6 . Moreover, if the outlet unit 9 is sufficiently lightweight as described above, it is not necessary to use a separate hanger or the like to support the outlet unit 9 other than the hanger 6c (see FIG. 3). The arrangement change is completed only by exchanging the positions of the outlet unit 9 and the ceiling panel 7.例文帳に追加

Further, if the power line communication is adopted for inputting the control signal 9d to the outlet unit 9 as described above, the only wiring associated with the outlet unit 9 is the power cable. Restrictions due to wiring can be reduced in changing the position. That is, when designing or changing the layout of the outlet unit 9, there is no need for complicated wiring, and the work is minimized.

Thus, in the air conditioning system of this embodiment, if the temperature of the temperature control panel becomes uniform due to the radiant heat from the temperature control panel on the partition surface of the target space, the radiant heat to the objects to be cooled of the same flat area in the room becomes uniform. While having the advantage of being easy to provide, it is possible to flexibly respond to changes in the demand for the air conditioning effect in the target space S by changing the air volume of the outlet unit 9 responsible for convection air conditioning. If a bias in the air conditioning effect is required, the request can be met by changing the air volume in some of the outlet units 9 . Moreover, the arrangement of the outlet unit 9 can be easily changed.

In addition to the temperature adjustment circuit (not shown), the control device 17 also reduces the amount of regulated air, which is an important heat medium for radiant air conditioning, due to clogging of the filter 1f built in the air conditioner 1 over time. It is equipped with control of variable air volume unit 11 that does not require air conditioning, and furthermore, air volume of regulated air that sufficiently satisfies radiant air conditioning and convective air conditioning is provided for a large number of air outlet units 9 even if the occupants arbitrarily move or change the air blowing state. It is equipped with an air conditioner fan air volume control circuit (not shown) to ensure.

As described above, the total air volume of each fan 9b is used as one of the variables, and the air volume of the air conditioner fan air volume variable mechanism is basically changed in a stepwise or proportional manner. Due to clogging, there is a possibility that the total air volume of the terminal fan 9b and the rotation speed setting value of the air conditioner fan air volume variable mechanism set accordingly may deviate from each other. Therefore, the output control signal of the variable air volume unit 11 having its own wind speed sensor is used to correct the clogging of the filter 1f with the required air volume signal of the variable air volume unit 11 for the air volume of the air conditioner fan air volume variable mechanism. control. Further, in the air conditioning system of this embodiment, the temperature of the conditioned air 3 is basically adjusted as described above so that the ceiling panel 7 is appropriately cooled or heated for radiant air conditioning.

As described above, the air conditioning system of the present embodiment includes the air conditioner 1 that sends out the conditioned air 3, the air supply chamber C that is adjacent to the target space S and receives the regulated air 3 that is supplied from the air conditioner 1, A non-perforated temperature control panel 7 installed between the target space S and the air supply chamber C, cooled or heated by the conditioned air 3, and performing radiant air conditioning to the target space S, and sent to the air supply chamber C a blower outlet 9 for supplying the regulated air 3 to the target space S; a fan 9b installed at the blower outlet 9 for sending the regulated air 3 in the air supply chamber C to the target space S; It is adjacent to the target space S on a different side from the air supply chamber C, and has a return air path for returning the return air 16 to the air conditioner 1 by the air conditioner built-in fan 1b. By doing this, if the temperature of the temperature control panel 7 becomes uniform due to the radiant heat from the temperature control panel in the target space S section, it is said that the radiant heat can be uniformly applied to the object to be cooled of the same flat area in the room. While maintaining the advantages of a radiant air-conditioning system, it is possible to flexibly respond to changes in the air-conditioning effect demand in the target space S by changing the air volume of the air outlet 9 responsible for convection air-conditioning.

Further, the air conditioning system of the present embodiment includes an air conditioner 1 that sends out the conditioned air 3, an air supply chamber C that is adjacent to the target space S and receives the regulated air 3 that is supplied from the air conditioner 1, and the target space S and the air supply chamber C, cooled or heated by the conditioned air 3, and performing radiant air conditioning to the target space S, and the conditioned air sent to the air supply chamber C 3 to the target space S, a fan 9b installed in the outlet 9 for sending out the adjusted air 3 in the air supply chamber C to the target space S, and the air in the target space S to the air supply chamber A return air path is formed by a duct isolated from C and returns return air to the air conditioner 1 by an air conditioner built-in fan 1b. The return air path, which is a duct isolated from the air supply chamber C, is preferably insulated. By doing this, if the temperature of the temperature control panel 7 becomes uniform due to the radiant heat from the temperature control panel in the target space S section, it is said that the radiant heat can be uniformly applied to the object to be cooled of the same flat area in the room. While maintaining the advantages of a radiant air-conditioning system, it is possible to flexibly respond to changes in the air-conditioning effect demand in the target space S by changing the air volume of the air outlet 9 responsible for convection air-conditioning.

In the present embodiment, the operation of the fans 9b is configured to be individually controllable from within the target space S for each fan 9b, so local air volume control according to the conditions within the target space S is possible. .

In this embodiment, the air supply chamber C and the target space S are communicated with each other, and at least even when all the fans are stopped, an air flow is formed in the air supply chamber to bring the regulated air into contact with the temperature control panel. Since the port 10 is provided, the pressure in the air supply chamber C is released into the target space S as necessary, and a predetermined amount of the regulated air 3 is released from the pressure adjustment port 10 to the target space S side, thereby reducing the temperature. Conditioned air, which is a heat medium, is brought into contact with most of the ceiling panel 7, which is an adjustment panel, so that good heat transfer can be maintained.

In this embodiment, the temperature control panel 7 is a ceiling panel installed on the ceiling 6 of the target space S, and the air supply chamber C is a space located above the ceiling 6 .

In this embodiment, the ceiling 6 is provided with a grid 6b composed of the ceiling structural material 6a, and the temperature control panel is divided into a large number of grids 6b formed of the ceiling structural material 6a. It consists of a plurality of divided ceiling panels 7, and the outlet 9 is configured as an outlet unit having a fan 9b above an outlet 9a facing the target space S, and the outlet unit 9 and the ceiling panel 7 are , and each can be installed in one grid 6b, the arrangement of them on the ceiling 6 can be easily changed only by replacing the positions of the outlet unit 9 and the ceiling panel 7.例文帳に追加

This embodiment can be provided with an operation device 20 that is tied to each fan 9b of the outlet unit 9 and that can individually control the operation of the fan 9b.

This embodiment includes a flow control valve 1e for proportionally adjusting the flow rate of water, which is the heat medium of the cold water coil, hot water coil, or cold/hot water coil 1d built in the air conditioner 1, a return air temperature sensor 18 in the return air path, A control device 17 having a temperature controller circuit that calculates a control signal based on the deviation between the measured value of the return air temperature sensor 18 and the return air temperature set value, and the measured value of the return air temperature sensor 18 and the return air temperature Since the flow control valve 1e can be controlled according to the control signal 1g calculated based on the deviation from the set value, the amount of heat to be treated for the indoor load can be given to the adjusted air regardless of the amount of air blown from the air conditioner 1. can be done.

In this embodiment, a plurality of return air temperature sensors 19 are installed in the return air path, the control device 17 averages the measured values of the plurality of return air temperature sensors, and the result is used to control the flow control valve 1e. can be used to accurately pick up the heat load of the target space.

In this embodiment, the air conditioner built-in fan 1b is equipped with an air conditioner fan air volume variable mechanism 1c, and according to the number and state of the fans 9b of the outlet unit 9 whose operation is individually controlled by the resident from the target space S Since it is possible to determine the air volume change to the air conditioner built-in fan 1b of the air conditioner fan air volume variable mechanism 1c, even if any occupant in the target space S arbitrarily changes the operation state of the fan 9b, radiant air conditioning It is possible to secure a local draft without causing a collapse of convection air conditioning.

In this embodiment, a variable air volume unit 11 having a mechanism for measuring its own air volume with an air velocity sensor is provided in the path (branch duct 5) between the air conditioner 1 and the air supply chamber C, and is built into the air conditioner 1. Even if the degree of clogging of the filter 1f changes, a constant air volume can be supplied to the air supply chamber C when all the outlet units 9 are stopped. When the degree of opening is less than that, a control signal can be sent to the air-conditioning fan air volume variable mechanism 1c to reduce the air volume, so that the air supply volume does not decrease due to aging.

In this embodiment, an axial flow fan is used as the fan 9b so that the airflow passes mainly in the axial direction of the impeller and is pressurized by the lift action of the blades. Since the leaked airflow can be allowed, the leaked airflow from the fan 9b distributedly installed for each predetermined module prevents the conditioned air 3 as a heat medium and the imperforate temperature control panel 7 necessary for radiant air conditioning. Heat transfer between the ceiling panels 7 is effective in any part.

Therefore, according to the present embodiment, the air conditioning effect can be locally adjusted in the target space by the convection air conditioning while performing the radiant air conditioning.

It should be noted that the air conditioning system of the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

REFERENCE SIGNS LIST 1 air conditioner 1b air conditioner built-in fan 1c air conditioner fan air volume variable mechanism 1d coil 1e flow control valve 1f filter 3 regulated air 6 ceiling 6a ceiling structural material 6b grid 7 temperature control panel (ceiling panel)
9 outlet (outlet unit)
9a Blowout part 9b Fan 10 Pressure regulating port 11 Variable air volume unit 18 Ambient temperature gauge 19 Ambient temperature gauge C Air supply chamber S Target space

Claims (8)

an air conditioner that delivers conditioned air;
an air supply chamber, which is a space adjacent to the target space and located above the ceiling of the target space, into which the conditioned air supplied from the air conditioner is sent;
a non-perforated temperature regulating panel installed in the ceiling between the target space and the supply chamber, the temperature control panel being cooled or heated by conditioned air to provide radiative air conditioning to the target space;
an air outlet for supplying the conditioned air sent into the air supply chamber to the target space; and
an air outlet unit comprising a fan installed above the air outlet for sending conditioned air in the air supply chamber to a target space;
a pressure regulating port that communicates the air supply chamber with a target space and forms an air flow in the air supply chamber that causes the regulated air to contact the temperature control panel even when at least all the fans of the blowout unit are stopped; ,
a return air path for returning the air in the target space to the air conditioner as return air by an air conditioner built-in fan adjacent to the target space on a different side from the air supply chamber,
The operation of the fans of the outlet unit is configured to be individually controllable from within the target space for each fan,
The air conditioner built-in fan includes an air conditioner fan air volume variable mechanism,
According to the number and state of the fans of the outlet unit whose operation is individually controlled by the occupant from the target space, the air volume change to the air conditioner built-in fan of the air conditioner fan air volume variable mechanism is determined. air conditioning system. an air conditioner that delivers conditioned air;
an air supply chamber, which is a space adjacent to the target space and located above the ceiling of the target space, into which the conditioned air supplied from the air conditioner is sent;
a non-perforated temperature regulating panel installed in the ceiling between the target space and the supply chamber, the temperature control panel being cooled or heated by conditioned air to provide radiative air conditioning to the target space;
an air outlet for supplying the conditioned air sent into the air supply chamber to the target space; and
an air outlet unit comprising a fan installed above the air outlet for sending conditioned air in the air supply chamber to a target space;
a pressure regulating port that communicates the air supply chamber with a target space and forms an air flow in the air supply chamber that causes the regulated air to contact the temperature control panel even when at least all the fans of the blowout unit are stopped; ,
a return air path that is formed by a duct isolated from the air supply chamber and returns the air in the target space to the air conditioner as return air by an air conditioner built-in fan,
The operation of the fans of the outlet unit is configured to be individually controllable from within the target space for each fan,
The air conditioner built-in fan includes an air conditioner fan air volume variable mechanism,
According to the number and state of the fans of the outlet unit whose operation is individually controlled by the occupant from the target space, the air volume change to the air conditioner built-in fan of the air conditioner fan air volume variable mechanism is determined. air conditioning system. a flow control valve that proportionally adjusts the flow rate of water that is a heat medium for the cold water coil or hot water coil or cold/hot water coil built into the air conditioner;
a return air thermometer located in the return air path;
a calculator comprising a temperature controller circuit for calculating a control signal for operating the flow control valve based on the deviation between the measured value of the return air thermometer and the set value of the return air temperature;
A variable air volume unit having a mechanism for measuring its own air volume with a wind speed sensor is provided on the path between the air conditioner and the air supply chamber,
A constant air volume can be supplied to the air supply chamber when all the air outlet units are stopped even if the degree of clogging of the filter incorporated in the air conditioner changes,
The computer sends a control signal to the air conditioner fan air volume variable mechanism to reduce the air volume when the damper of the variable air volume unit maintains an opening less than a predetermined opening for a predetermined time. An air conditioning system according to claim 1 or claim 2. The fan of the outlet unit is an axial fan in which the airflow passes through the impeller mainly in the axial direction of the impeller and is boosted by the lift force of the blades,
4. The air conditioning system according to any one of claims 1 to 3 , wherein even when the pressure in the air supply chamber is low when the fan of the outlet unit is stopped, air leakage to the target space is allowed. The ceiling comprises a grid composed of ceiling structural materials,
The temperature control panel is composed of a plurality of ceiling panels divided into a plurality of grids that divide the ceiling into a plurality of grids formed by the ceiling structural material,
The outlet is configured as an outlet unit including the fan above the outlet facing the target space,
The air conditioning system according to any one of claims 1 to 4 , wherein each of said outlet unit and said ceiling panel is configured to be installable within one said grid. a flow control valve that proportionally adjusts the flow rate of water that is a heat medium for the cold water coil or hot water coil or cold/hot water coil built into the air conditioner;
a return air thermometer located in the return air path;
a computing machine comprising a temperature controller circuit that computes a control signal based on the deviation between the measured value of the return air thermometer and the set value of the return air temperature,
6. The air conditioning system according to claim 4 , wherein the flow rate control valve is controlled according to a control signal calculated based on a deviation between the measured value of the return air thermometer and the set value of the return air temperature. A plurality of the return air thermometers are installed in the return air path,
7. The air-conditioning system according to claim 6 , wherein said calculator averages the measured values of a plurality of return air thermometers and uses the result for controlling said flow control valve. The air conditioning system according to any one of claims 1 to 7 , wherein the operation of the fan of the outlet unit is controlled by power line communication.

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