JP4429615B2 - Damper control system and valve control system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention provides a damper control system.ToRelated. More specifically, a motor damper control system for flattening a duct connecting an air conditioning and exhaust main duct provided in a building and a room.ToRelated.
[0002]
[Prior art]
[Patent Document 1]
Japanese Patent No. 2779568
[Patent Document 2]
Patent 3044014
[Patent Document 3]
JP 2002-237226 A
[0003]
Patent Document 1 includes a first opening and a second opening that communicate with an upper portion and a lower portion of a room, respectively, and a third opening that communicates with an exhaust passage, and the third opening is driven by a motor. Alternatively, a motor damper (fluid passage switching device) having a shielding plate that can be selectively communicated with any of the second openings, and the temperature of the room is detected. A ventilation system is disclosed in which high temperature air is exhausted from the upper part of the room by communicating with the three openings, and low temperature air is exhausted from the lower part of the room by connecting the second opening and the third opening when low. Has been. This detects the temperature in the room and controls the motor damper.
[0004]
Patent Document 2 includes a control unit that controls a motor, a communication line that exchanges signals with the host computer, and a power supply line that supplies power to the motor, and controls the opening degree of the duct according to a command from the host computer. A network type motor damper control system is disclosed. Further, it is also disclosed that a plurality of motor dampers are connected with a wiring in order. In this system, a single signal line can control a plurality of motor dampers in a unified manner, and can also be controlled in a distributed manner.
[0005]
Patent Document 3 discloses a composite cable in which a single optical fiber cable is centered, and two or three power wires are spirally twisted around the optical fiber cable. In this case, a signal line and a power line can be wired only by wiring one composite cable. This simplifies wiring work.
[0006]
Conventional detection means for detecting the temperature in the room is generally housed in a control box provided on the wall surface of the room in order to save space and to approach the control device. Moreover, in order to reflect the temperature which a resident feels most appropriately, the temperature of the center of the room is also detected by a pendant type temperature sensor suspended from the ceiling.
[0007]
[Problems to be solved by the invention]
The motor damper disclosed in Patent Document 1 can switch one damper to discharge low temperature air in the lower part of the room or high temperature air in the upper part, thereby achieving energy saving. However, air-conditioning that actively heats or cools the room is not controlled. For this reason, when air conditioning control is performed, the air conditioning pipe and the exhaust pipe are controlled separately, and control devices and the like are duplicated, which tends to increase waste. On the other hand, in the motor damper control system of Patent Document 2, since it is necessary to separately wire the signal line and the power line, wiring work is complicated. When the composite cable of Patent Document 3 is used for such a damper control system, wiring work is facilitated. However, since this composite cable is obtained by twisting 2 to 3 power wires around the optical fiber cable, the flexibility is poor. Therefore, the wiring work for the bent part and the curved part is troublesome.
[0008]
In addition, when a controller is provided on the wall surface of the room and wiring is performed between the temperature sensor built in the controller or between the pendant type temperature sensor and the control unit of the motor damper, installation work and maintenance can be performed even if the composite cable is used. Is quite annoying. In addition, valves that control the flow of liquids and the like are also used for valves that are opened and closed by a motor. However, the wiring work for these valves is also troublesome and maintenance is difficult.
[0009]
It is a technical object of the present invention to provide a motor damper control system that can simplify control equipment and wiring, and can be easily installed and maintained, and a motor damper used therefor and a valve control system that can be easily wired and maintained. .
[0010]
[Means for Solving the Problems]
  The damper control system according to the present invention includes an air conditioning main duct and an exhaust main duct arranged on a ceiling of a building, an air conditioning duct and an exhaust duct connecting the main duct and a room, and hot air or cold air. A first motor-driven damper provided in the air-conditioning duct for allowing air to flow into the room, and a second motor-driven damper provided in the exhaust duct for causing air to flow out from the room. A first actuator that controls opening and closing of the first damper is connected to the damper, and a second actuator that controls opening and closing of the second damper is connected to the second damper, and the first actuator and The second actuator is communicably connected to the first actuator, and the first actuator has air flowing through the air conditioning duct.Concentration, humidity, carbon dioxide concentration, or smoke concentrationA first sensor for detecting the opening, a first CPU for controlling opening and closing of the first damper, and airConcentration, humidity, carbon dioxide concentration, or smoke concentrationIs connected to a first memory in which the target value is recorded, and the second actuator has an air flow in the exhaust duct.Concentration, humidity, carbon dioxide concentration, or smoke concentrationA second sensor for detecting the opening, a second CPU for controlling the opening and closing of the second damper, and airConcentration, humidity, carbon dioxide concentration, or smoke concentrationIs connected to a second memory in which the target value is recorded, and the first CPUConcentration, humidity, carbon dioxide concentration, or smoke concentrationIs controlled to open and close the first damper based on both outputs of the first sensor and the second sensor, and the second CPUConcentration, humidity, carbon dioxide concentration, or smoke concentrationIs configured to control the opening and closing of the second damper based on both outputs of the first sensor and the second sensor so that the value becomes the target value.
[0011]
  In such a damper control system,The first actuator and the second actuator are connected by a crossover wiringI like thingsYes.
[0012]
  Moreover, it is preferable that the first actuator and the second actuator are connected by a hybrid cable including an optical fiber cable and a power line.
[0013]
  Furthermore, it is preferable that the first actuator and / or the second actuator and the outside are connected by a hybrid cable including an optical fiber cable and a power line.
[0014]
  The hybrid cable preferably includes an optical fiber cable and two conductive wires or two conductive layers provided around the optical fiber cable.
[0015]
[Operation and effect of the invention]
  The damper control system according to the present invention (Claim 1) is provided for air flowing through an exhaust duct.Temperature, humidity, carbon dioxide concentration, or smoke concentrationIs detected by the detecting means, and the opening degree of the damper is controlled based on the detected value. That is, in the present invention, by detecting the air flowing out of the room, the so-called average value of the air in the entire room is detected as a representative value, and control is performed based on the average value. If a temperature sensor or the like is arranged at a specific position in the room as in the prior art, if the temperature difference is large depending on the position in the room, the entire room is not representative and the detected value tends to be shifted. In addition, in order to detect accurately, it is necessary to provide a large number of sensors, which makes wiring work troublesome. If the detection means is provided in the exhaust duct as in the present invention, the overall representative value can be detected at one place, so that it can be controlled based on a relatively accurate value, and the wiring work is simple. Further, since the detecting means and each damper are close to each other, the wiring work is further facilitated.
[0016]
  Controlling the open / close state of the first damper according to the detection values of the first sensor and the second sensor immediately increases or decreases the flow rate of the cool air or hot air into the room, therebyTemperature, humidity, carbon dioxide concentration, or smoke concentrationIt is possible to perform target control for quickly approaching the target value. On the other hand, when the open / close state of the second damper is controlled according to the detection values of the first sensor and the second sensor, the inflow flow rate passing through the first damper can be indirectly controlled according to the increase / decrease in the exhaust flow rate. it can. As a result, target control that brings about a close approach to the target value becomes possible.
[0017]
  The present invention also provides air flowing in the air conditioning duct.Concentration, humidity, carbon dioxide concentration, or smoke concentrationAir that flows in from the air conditioning ductTemperature, humidity, carbon dioxide concentration, or smoke concentrationCan be detected. For example, air flowing out of an exhaust ductTemperature, humidity, carbon dioxide concentration, or smoke concentrationAnd air flowing from the air conditioning ductConcentration, humidity, mountainous carbon concentration, or smoke concentrationBy comparing the above, it is possible to indirectly grasp the number of people in the room, the number of people coming and going, and the like, and control according to the estimated values becomes possible. Therefore, the indoor state can be controlled more accurately. Moreover, since the distance between the air conditioning duct and the first damper is close, the wiring work between them is easy.
[0018]
  The first actuator and the second actuator are:With fiber optic cableWhen connected by a hybrid cable consisting of power lines,For power parts such as motors that open and close each damper,Power lineThe drive current can be sent byThe actuator CPUControl signals can be sent by optical fiber cable. Then, it is possible to carry out the wiring work for the signal line of the control signal and the power line at the same time only by wiring of one hybrid cable. Therefore, wiring work is easy. TheIn addition, optical fiber cables have a significantly increased communication speed compared to copper wires.The
[0019]
  Further, when the hybrid cable is composed of an optical fiber cable and two conductive wires or two conductive layers provided around the optical fiber cable, the hybrid cable is provided between the first conductive layer and the second conductive layer. AC current can be passed through. When the first actuator and the second actuator are connected by a crossover wiring, the wiring work can be greatly simplified as compared with a case where wiring is made from one centralized control panel to all the dampers.
[0020]
  When the first actuator and / or the second actuator and the outside are connected by a hybrid cable including an optical fiber cable and a power line,In response to an external signalCPUThe working can be adjusted. Therefore, it can easily cope with a local area network (hereinafter simply referred to as LAN).
[0022]
DETAILED DESCRIPTION OF THE INVENTION
  Next, an embodiment of the duct control system of the present invention will be described with reference to the drawings. FIG. 1 is a piping / control system diagram showing a basic embodiment of the control system of the present invention, FIGS. 2 and 3 are main circuit diagrams and general circuit diagrams of a LAN system using the control system, respectively. 1 is a circuit diagram of a motor damper used in the control system of FIG. 1, FIGS. 5a and 5b are a perspective view and a sectional view showing an embodiment of a hybrid cable used in the control system of FIG. 1, and FIG. 6 is a damper control of FIG. FIG. 7 a and FIG. 7 are perspective views showing an embodiment of a main duct used in the damper control system of FIG. 1, respectively.FIG. 8 is a piping / control system diagram showing a valve control system outside the scope of the present invention,FIG. 9 is a circuit diagram showing another embodiment of the actuator of the present invention, and FIG. 10 is a piping / control system diagram showing an embodiment of fire prevention equipment using the control system of the present invention.
[0023]
A control system 10 shown in FIG. 1 includes an air conditioning main duct 11 and an exhaust main duct 12 arranged on a ceiling of a building, and an air conditioning duct 14 and an exhaust duct 15 that connect the main duct and the room 13. And a first damper 16 interposed in the middle of the air-conditioning duct 14 and a second damper 17 interposed in the middle of the exhaust duct 15. Further, the air conditioning duct 14 and the exhaust duct 15 are connected to sensors 18 and 19 for detecting the state of the air passing therethrough, for example, temperature, humidity and CO2 concentration. The first damper 16 and the second damper 17 are connected to actuators 20 and 21 for controlling the opening and closing of the damper, respectively.
[0024]
These actuators 20 and 21 are wired by a hybrid cable 23 in which an optical fiber cable and two conductive wires or two conductive layers are combined. The actuator 20 of the first damper is further connected to a hub 24 by a hybrid cable 23 as shown in FIG. 2, and the hub 24 is further connected to other hubs 26 and 27 by a hybrid cable 25 as shown in FIG. Crossover wiring. The last hub 27 is connected to a file server 29 via a communication line 28 such as an optical fiber cable, and further connected to the Internet via a web server 30. Each of the hubs 24, 26, and 27 is a hybrid hub including a power supply unit for connecting a power supply line to supply power and a communication unit for connecting a communication line. The communication unit may be a normal hub, but preferably has a switching hub, router, or DHCP server function for sending a signal to a specific address line.
[0025]
On the other hand, a USP 32 with a router function is connected to the lower part of the actuator 20 of the first duct via a hybrid cable 31 so that power can be supplied to other devices in the room 13 or connected to an information terminal of the Internet or LAN. I am doing so. As a result, for example, the temperature can be set for the actuators 20 and 21 from an information terminal such as an indoor personal computer. Further, the file server 29 shown in FIG. 3 can perform centralized management of actuators for the entire building. The file server 29 preferably has a function (such as a DHCP server) having a function of automatically reallocating private IP addresses when information terminals are added or decreased. Thereby, a LAN based on the TCP / IP protocol or the like can be constructed as a whole.
[0026]
As the main duct 11 for air conditioning and the main duct 12 for exhaust in FIG. 1, a conventionally known one, for example, a tubular body (see reference numeral 11 in FIG. 7a) in which a galvanized steel plate is formed in a rectangular or circular cross section. Used. The air conditioning main duct 11 is connected to an air conditioning unit (air conditioner; see reference numeral 65 in FIG. 6) including a heat exchanger and a fan for blowing air, and is set to a positive pressure higher than the ambient pressure. An air conditioning duct 14 is branched from the main duct 11 and connected to the room 13. The air conditioning duct 14 is also the same as the conventional one, for example, a tubular body in which a galvanized steel sheet is formed in a rectangular or circular cross section.
[0027]
On the other hand, an exhaust fan (see reference numeral 67 in FIG. 6) that exhausts to the outside is connected to the exhaust main duct 12 so that the negative pressure is lower than the ambient pressure. An exhaust duct 15 is branched from the main duct 12 and connected to the room 13. The exhaust duct 15 is also the same as the conventional one, for example, a tubular body in which a galvanized steel sheet is formed in a rectangular or circular cross section.
[0028]
The first damper 16 interposed in the air conditioning duct 14 and the second damper 17 interposed in the exhaust duct 15 can be substantially the same. For example, as shown in FIG. 4, the first damper 16 rotates a shaft 34 that is rotatably provided in the air conditioning duct 14 so as to cross the air conditioning duct, a shielding plate 35 attached to the shaft, and rotationally drives the shaft. Limit switches LS1 and LS2 for detecting the motor M, the angle sensor P for detecting the rotational position of the shaft 34 and the shielding plate 35, and the rotation end of the shielding plate 34, that is, the position where the air conditioning duct 14 is closed and the position where it is most widely opened. And. As the angle sensor P, a potentiometer, a rotary encoder, or the like is used. Note that the angle sensor P and the limit switches LS1 and LS2 may be considered as elements of the first damper 16, or may be considered as elements of the actuator 20 that controls the first damper 16. Further, the motor M can also be considered as an element of the actuator 20.
[0029]
The actuator 20 that controls the motor M includes a first connector 36 that connects the hybrid cable 25 from the hub 24 and a second connector 37 that connects an end of the hybrid cable connected to the exhaust duct. Each of the connectors 36 and 37 is an integrated optical fiber connector for connecting to an optical fiber cable and a power line connector for connecting a power line. However, an optical fiber connector and a power line connector may be provided separately, and the end of the hybrid cable 23 may be separated and connected to the optical fiber and the power line (see FIG. 9). The optical fiber connector is connected to a conversion unit that converts between an optical signal and an electrical signal, and is connected to an input / output port 41 of a control board 40 housed in the actuator 20. The control board 40 further includes a power supply unit 42 to which an end of a power supply line is connected, a motor driver 43 interposed between the power supply unit and the motor M, an angle sensor P and limit switches LS1 and LS2. Circuits 44 and 45 for receiving the signals are provided. The input / output port 41, the motor driver 43, and the circuits 44 and 45 for receiving signals are connected to the central processing unit CPU via an internal bus 46, respectively.
[0030]
When the angle sensor P or the like outputs an analog signal, it is connected to the bus 46 via an analog / digital converter. The central processing unit CPU calculates the angle of the shielding plate 35 based on a signal input from the cooling / heating setting mode or setting temperature given from the outside, the detected temperature of the temperature sensor 19 of the exhaust duct, etc. The motor M is rotated via the driver 43 to control the shielding plate 35 at an appropriate angle. The bus 46 is connected to a memory (not shown) for storing a program for executing these controls. However, it can be configured to be controlled from the outside via the hybrid cable 23.
[0031]
A sensor 18 that detects a temperature or the like provided in the air conditioning duct 14 is further connected to the central processing unit CPU of the actuator 20 of FIG. The signal of the sensor 18 can also be processed in the CPU. In some cases, the signal is sent to an external control device such as a personal computer (see reference numeral 78 in FIG. 6) or an actuator of another damper via the hybrid cable 23. It can also be controlled indirectly by them. If necessary, it is preferable to supply power from the power supply unit 42 of the first actuator 20 to the sensor 18. Similarly, it is preferable to supply power to the angle sensor P from the power supply unit 42 as well.
[0032]
  As shown in FIG. 1, sensors 18 and 19 are provided in the air conditioning duct 14 and the exhaust duct 15, respectively.For,Signals from these sensors are sent to the central processing unit CPU of the first damper 16, for example.IsSo, first damper 16'sAngle of shielding plate 35ControlCan control.
[0033]
In the control system 10 configured as described above, for example, an appropriate target temperature of room temperature is set from the outside, and the temperature is stored in the memory of the actuator 20 of the first damper. Then, the opening angles of the first damper 16 and the second damper 17 are adjusted so that the difference from the temperature representative of the room temperature detected by the sensor 19 of the exhaust duct 15 is eliminated. That is, in the cooling mode, when the temperature of the sensor 19 in the exhaust duct 15 is higher than the set temperature, it is confirmed that the temperature detected by the sensor 18 in the air conditioning duct 14 is lower than the set temperature, and then the first damper 16 and The second damper 17 is opened together, and cool air is sent into the room 13 to lower the room temperature. When the difference between the sensor 19 of the exhaust duct 15 and the target temperature falls within a certain range, both dampers 16 and 17 are closed to the minimum angle necessary for ventilation. At that time, when the initial temperature difference is large, the opening degree of the damper may be increased, and when the temperature difference is small, the opening degree of the damper may be decreased.
[0034]
The sensors 18 and 19 may be humidity sensors, CO2 concentration sensors, smoke sensors that detect smoke concentration, and other sensors that measure physical quantities that affect the living environment, in addition to the temperature sensors described above.
[0035]
As the hybrid cables 23 and 25, for example, as shown in FIGS. 5 a and 5 b, an optical fiber cable 51 is used as a core wire, and a protective layer 52, a first conductive layer 53, an insulating layer 54, and a second conductive layer 55 are provided around the optical fiber cable 51. And the coaxial cable which provided the insulating coating layer 56 in that order is used suitably. The first conductive layer 53 and the second conductive layer 55 constitute a power supply line, and a plurality of metal wires (copper wires) knitted in a net shape are preferable. Thereby, it is easy to construct a coaxial structure. Further, since the cross-sectional shape can be made substantially circular, it is highly flexible and can be easily bent in any direction. However, as a hybrid cable, an optical fiber cable and two metal wires arranged in parallel can be used.
[0036]
The first conductive layer 53 and the second conductive layer 55 preferably have substantially the same resistance per unit length. Therefore, when the diameters of the metal wires constituting the stitches are the same, it is preferable that the number of metal wires of the first conductive layer 53 and the number of metal wires of the second conductive layer 55 be the same. It is preferable to pass an AC 100V power source or the like between the first conductive layer 53 and the second conductive layer 55. However, DC 24V, 12V, etc. may be passed. In the case of supplying alternating current, the power supply unit 42 in FIG. 4 is provided with an alternating current / direct current converter (rectifier) and a voltage converter (transformer). A third conductive layer may be provided around the second conductive layer 55 via an insulating layer. In that case, any conductive layer can be used as a ground wire or a shield wire. Moreover, a three-phase alternating current can be sent.
[0037]
FIG. 6 shows an embodiment of a building that employs the control system 10. In this building 60, the first and second hybrid cables 23, 23 extend from the hub 24 provided on the ceiling of the first floor, and the actuators 19 of the damper control systems 10, 10 on the second floor and the first floor, respectively. , 20. The actuators 19 and 20 of the damper control system 10 on each floor are wired with a hybrid cable 23, respectively. Further, a third hybrid cable 64 is wired from the hub 24 to the exhaust fan 61 and the actuator 63 of the exhaust damper 62 provided in the end opening of the exhaust main duct 12. Further, the air conditioner 65, the hot water supply facility 66, and the cogeneration system 67 in the basement are each provided with an actuator, connected to the hub 24 by the fourth hybrid cable 68, and wired.
[0038]
In addition, the code | symbol 69 of the hot water supply equipment 66 of FIG. 6 is a filter, and the code | symbol 70 is a hot water tank. Moreover, the code | symbol 71 of the cogeneration system 67 is a generator, and the code | symbol 72 is a heat exchanger. A pipeline 73 is connected between the generator 71 and the hot water tank 70 to send cold water from the hot water tank to the generator and to send hot water from the generator to the hot water tank. Thereby, the heat exchanger 72 can act as a radiator for cooling the generator 71, and the heat energy obtained at that time is effectively used in the hot water supply facility 66 or the air conditioner 65. Reference numeral 74 of the hot water supply facility is a unit including a valve, a pump, and the like. Further, a conduit 75 for circulating the heat medium is also provided between the heat exchanger 72 and the air conditioner 65.
[0039]
As the generator 71 of the cogeneration system 67, for example, a gas combustion generator, a gas turbine generator, or a fuel cell is used. The generated power is sent to the hub 24 on the second floor by the power cable 76 and used in the above-described damper control system 10 and the like. Instead of the power cable 76, power may be transmitted using a hybrid cable. When the generator 71 uses natural gas, the cold heat accompanying the expansion of the supplied natural gas can be used effectively as a cooler heat source for the cooler. Moreover, it can replace with the generator 71 or a solar power generation panel is also employable with a generator.
[0040]
Further, as shown in FIG. 6, a fifth hybrid cable 77 extends from the hub 24, and a central management device such as a personal computer (personal computer) 78 is connected to the tip of the fifth hybrid cable 77. The personal computer 78 can centrally manage the damper control systems 10 and 10 on the first floor and the second floor, the air conditioner 65 and the hot water supply facility 66 in the basement, the cogeneration system 67, the floor heating system 79, and the like. In that case, it is preferable that the electric equipment supplied with the hybrid cable is configured so that the power consumption is detected by the actuator, and the personal power supply 78 manages the total power consumption. Further, it is preferable that the personal computer 78 has the function of the file server 29 of FIG.
[0041]
Furthermore, it is preferable to provide a switch for remotely controlling the ON / OFF of the electric power in the actuator so that electricity is turned off for unnecessary electric devices. Thereby, a power saving effect is obtained. In particular, if the power used is detected by an actuator, the amount of electricity used can be checked at all times, so unnecessary electricity can be worn instantaneously and power can be saved. In addition, the floor heating system 79 or the like is normally provided with a temperature sensor and automatically adjusts within a certain temperature range, but does not exceed the set power of the breaker while detecting the amount of electricity used by the entire electrical equipment. It is preferable to perform centralized management.
[0042]
In the embodiment of FIG. 6, the damper control systems 10 and 10 on the first floor and the second floor are wired with a hybrid cable 23. The hybrid cable 23 extends along the main ducts 11 and 12 for air conditioning or exhaust. Are wired. Therefore, the hybrid cable 23 can be supported by a support member 80 extending below the main duct 11, as shown in FIG. 7a. Thereby, the wiring work of the hybrid cable 23 can be performed together with the work of the main duct 11. In addition, the control wiring and the power wiring can be performed simultaneously by wiring only one cable. Therefore, construction is easy. Even when the work is to be performed later, if the support member 80 is attached to the main duct 11 in advance, or a mounting seat or a welding nut for attaching the support member 80 is provided, the work is easy. Furthermore, even when performing maintenance such as exchanging or repairing the cable, it is easy because there is only one cable.
[0043]
Further, as shown in FIG. 7 b, the hybrid cable 23 can be wired inside the main duct 11. In that case, even when wiring to the ceiling of a basement, damage of harmful animals such as moths can be avoided. It is preferable that the corner portion of the main duct 11 is partitioned by a partition plate 81 to provide a wiring space 82 having a triangular cross section, and wiring is provided therein. This reduces the resistance to air flow in the duct.
In addition, vortex flow in the duct is reduced, and wind noise and vibration, and resonance sound based on them are greatly reduced. The partition plates 81 are preferably provided at the four corners. This further reduces wind noise and resonance.
[0044]
  In the embodiment of FIG. 1, sensors 18 and 19 are provided in both the air conditioning duct 14 and the exhaust duct 15.The for that reason,When mass producing dampers, install the same sensor and actuator on both dampers.It is possibleMass production effectI get out. Also,Both have actuatorsBecauseWiring work is easy.
[0045]
Further, in the embodiment of FIG. 6, the damper control systems 10 and 10 on the first floor and the second floor are controlled by one hub 24, but other hubs 26 and 27 are connected to one hub 24 as shown in FIG. 3. They may be connected in order so that the hubs 24, 26, 27 are connected to the actuators. By sequentially connecting the hubs in this way, it can be easily applied to various buildings such as single-family buildings, high-rise buildings such as apartments, and office buildings.
[0046]
The valve control system 84 shown in FIG. 8 includes a filter 69, a hot water tank 70, a pipe 73 and a unit 74 similar to those in FIG. 4, and further between the unit 74 and the two bathtubs 85 and 85. A switching valve 86 is interposed. Further, a flow rate adjusting valve or an open / close control valve 87 is interposed in the vicinity of each bathtub 85 and between the pump and the hot water tank 70. It may be provided only on the supply side. The valves 86 and 87 are provided with actuators 88 similar to those shown in FIG. Those actuators 88 are wired over the hybrid cable 23 and connected to the hybrid hub 24. The hot water tank 70 may be connected to a normal water heater such as a gas water heater or an electric water heater, or may be connected to a generator similar to that shown in FIG. Further, the hot water heater and the bathtubs 85 and 85 may be connected via the valves 86 and 87 without the hot water tank 70 interposed.
[0047]
In the vicinity of the opening / closing valve 87 in the vicinity of the bathtub, a temperature sensor 89 for detecting the temperature of hot water is provided, and these temperature sensors 89 are also connected to the actuator 88 of the opening / closing control valve 87. The temperature sensor 89 may be provided in the bathtub 85. However, a temperature sensor may be provided in the vicinity of the switching valve 86, and a temperature sensor may be provided in the hot water tank 70. In any case, the single temperature sensor 89 is connected to a nearby actuator by a signal line or a hybrid cable, or connected to a hybrid hub.
[0048]
The actuator 88 is substantially the same as that shown in FIG. 4, but, as shown in FIG. 9, two optical converters 90 connected to the optical fiber cable 23a and a GIGA (1000BASE) switch or 100BASE switch 91, a single computer board 92 that exchanges signals with the switch 91, a driver 93 that receives signals from the switch 91 and drives a motor and solenoid, and receives analog signals from a temperature sensor 89, a valve open / close confirmation sensor, etc. It comprises an A / D conversion circuit 94 that converts the signal into a computer and sends it to a computer, a power supply unit 95, and the like.
[0049]
The optical converter 90 is a part to which a fiber optic cable of a hybrid cable is connected, and is provided as a pair for wiring to the next actuator. The power supply unit 95 is provided with a connector 96 connected to the conductive layer 23b of the hybrid cable. This connector 96 is also connected in parallel with a connector 97 for passing to the next actuator. In FIG. 9, the optical fiber cable 23a and the conductive layer 23b are shown separately, but in actuality, they are coaxial coaxial cables.
[0050]
The switching valve 86 and the opening / closing control valve 87 may be ordinary solenoid valves. In this case, for example, a limit switch or the like is used as an opening / closing confirmation sensor. When using a flow control valve, various types of valves such as butterfly valves and sluice valves can be used, and various drive sources such as solenoid drive type and motor drive type should be used for the drive method. Can do. An angle detector such as a potentiometer or a rotary encoder is used to detect the opening of the flow control valve. A flow meter such as a hot wire type may be used. In addition to the sensor for measuring the hot water temperature, other sensors such as a sensor for detecting the degree of dirt on the hot water may be employed.
[0051]
In the above valve control system, for example, when the temperature of the hot water in the bathtub is lowered, the open / close control valve 87 is opened accordingly to supply hot water, thereby keeping the temperature of the hot water in the bathtub within a certain range. Can do. When using a flow control valve, the supply amount of hot water can be changed continuously. In addition, a liquid level sensor may be provided so that the valve is closed when the hot water reaches an appropriate height. Also, when the dirt sensor detects dirt, the operating speed of the filter can be increased to keep the hot water clean. Such hot water temperature, liquid level, and dirt management / control can be applied not only to a bathtub in the home but also to relatively large bath facilities such as public baths and hot springs.
[0052]
Further, in the embodiment, the control is performed only on the supply side, but as in the case of the damper control described above, valves (imaginary lines 87a in FIG. 8) are provided on the supply side and the drain side, respectively. It is also possible to control the state such as appropriate temperature and dirt by combining the flow rate adjustment of 87a. In the case where the valve 87a is provided on the drain side pipe, remote control is possible when hot water is poured from the bathtub, and hot water can be replaced by remote control.
[0053]
The valves and dampers can be applied not only to control hot water and air but also to mixing various chemicals in chemical plants and controlling chemical reaction tanks. Further, it can be used for controlling a throttle valve or an ejector for controlling fuel or a mixture of fuel and air in an automobile engine. Moreover, you may provide in the supply line of air and fuel. In those cases, the same actuator can be employed simply by changing the program. In either case, since the hybrid cable including two or more conductive layers and the optical fiber cable is connected to the actuator, wiring work is easy. Further, since an optical fiber is used, the signal transmission speed is high even if the amount of information is large. Furthermore, since it is only necessary to connect in order by crossover wiring, it is easy to add fixtures. The hybrid cable for valve control can be wired independently, but if it is wired along the piping so as to be connected to the piping, wiring to the back of the ceiling or under the floor is easy.
[0054]
FIG. 10 shows an embodiment in which the damper control system is used for fire prevention equipment. In general, a fire prevention section is set for each predetermined floor area in a building, a fire wall 98 is provided between adjacent fire prevention sections, and a fire shutter 99 is provided at an opening of the fire wall 98. Yes. A sensor 100 that detects abnormally high temperature and smoke and a sprinkler 101 that is operated by the sensor are provided on the ceiling of the room. The fire wall 98 is provided with a fire damper 102 for partitioning the exhaust main ducts 12 extending beyond the fire compartment. The fire damper 102 is controlled to be closed by a signal from the sensor 100 or a fire alarm. The sensor 100 can also be provided in the second damper 16 for exhaust or the first damper 15 for air conditioning.
[0055]
Fire prevention dampers 103 and 104 that are automatically closed at a high temperature, such as a temperature fuse and a shape memory alloy spring, are provided in the middle of the exhaust main duct 12 and the air conditioning main duct 11. Further, a smoke exhaust duct 105 for exhausting smoke when the fire protection section is closed is connected in the middle of the exhaust main duct 12, and is normally closed by a smoke exhaust damper 106. Usually, a motor damper is also used for the smoke exhaust damper 106.
[0056]
In the above fire prevention equipment, when the sensor 100 detects an abnormally high temperature or smoke, the fire alarm buzzer sounds, the sprinkler 101 sprinkles, and the fire shutter 99 or the like in order to prevent the fire from spreading to the adjacent fire prevention section. The motor driven fire damper 102 is closed. When high-temperature air flows through the air conditioning main duct 11 and the exhaust main duct 12, a thermal fuse is activated to automatically turn off the fire dampers 103 and 104 in order to shut off the supply of new air. Close to. Then, the smoke exhaust damper 106 is opened in order to save the people who are left in the room from the damage of the smoke, and a smoke exhaust fan (not shown) is activated to exhaust the indoor smoke. By such a series of operations, fire prevention and evacuation are performed.
[0057]
The motor-driven fire-proof damper 102 and the smoke-exhaust damper 106 are connected to the centralized control panel via a power line and a communication line, and these are also connected to the hybrid cable 108 via the actuator 107 similar to the case of the above-described embodiment. It is preferable to connect with. Thereby, wiring work becomes easy and maintenance becomes easy. These hybrid cables 107 are also preferably wired along the air conditioning duct 14 and the exhaust duct 15 as shown in FIGS. 7a and 7b or in these ducts. The fire dampers 103 and 104 closed by the thermal fuse or the like can also be driven by a motor, and in that case, can be connected by a hybrid cable via an actuator.
[0058]
The above fire prevention equipment can be connected to a hub (see reference numeral 24 in FIG. 6) for controlling the first damper 14 for air conditioning and the second damper 15 for exhaust, but heat resistance is necessary, and in the event of a fire Therefore, it is preferable to provide an independent control system controlled by a separate control panel.
[Brief description of the drawings]
FIG. 1 is a piping / control system diagram showing a basic embodiment of a control system of the present invention.
FIG. 2 is a main circuit diagram of a LAN system using the control system of FIG. 1;
3 is an overall circuit diagram of a LAN system using the control system of FIG.
FIG. 4 is a circuit diagram of a motor damper used in the control system of FIG.
5a and 5b are a perspective view and a sectional view, respectively, showing one embodiment of a hybrid cable used in the control system of FIG.
6 is a schematic system diagram showing an embodiment of a building including the control system of FIG.
7a and 7b are perspective views showing an embodiment of a main duct used in the damper control system of FIG. 1, respectively.
[Fig. 8]It is a piping and control system diagram showing a valve control system outside the scope of the present invention.
FIG. 9 is a circuit diagram showing another embodiment of the actuator of the present invention.
FIG. 10 is a piping / control system diagram showing an embodiment of fire prevention equipment using the control system of the present invention.
[Explanation of symbols]
10 (damper) control system
11 Main duct for air conditioning
12 Exhaust main duct
13 rooms
14 Air conditioning duct
15 Exhaust duct
16 First damper
17 Second damper
18, 19 sensor
20, 21 Actuator
23 Hybrid cable
24 1st hub
25 Hybrid cable
26, 27 hub
28 Communication lines
29 File server
30 web server
31 Hybrid cable
32 USP with router function
34 Shaft
35 Shield plate
M motor
P Angle sensor
LS1, LS2 limit switch
36 First connector
37 Second connector
40 Control board
41 I / O port
42 Power supply
43 Motor driver
44, 45 circuits
CPU Central processing unit
46 bus
51 Optical fiber cable
52 Protective layer
53 First conductive layer
54 Insulation layer
55 Second conductive layer
56 Insulation coating layer
61 Exhaust fan
62 Exhaust damper
63 Actuator
64 Third hybrid cable
65 Air conditioner
66 Hot water supply equipment
67 Cogeneration system
68 Fourth hybrid cable
69 Filter
70 Hot water tank
71 Generator
72 heat exchanger
73 pipeline
74 pump
75 pipeline
76 Power cable
77 Fifth hybrid cable
78 Personal computer
79 Floor heating system
80 Support members
81 partition plate
82 space
84 Valve control system
85 Bathtub
86 switching valve
87 Open / close control valve
88 Actuator
89 Temperature sensor
90 Optical converter
91 switch
92 Single computer board
93 Driver
94 A / D conversion circuit
95 Power supply
96 connectors
97 connector
98 Firewall
99 Fire shutter
100 sensors
101 sprinkler
102 Fire damper
103, 104 Fire damper
105 Smoke exhaust duct
106 Smoke exhaust damper
107 Actuator
108 Hybrid cable

Claims (5)

A main duct for air conditioning and a main duct for exhaust arranged on the ceiling of a building,
An air conditioning duct and an exhaust duct connecting the main duct and the room;
A motor-driven first damper provided in the air conditioning duct for allowing hot air or cold air to flow into the room;
A motor-driven second damper provided in the exhaust duct for allowing air to flow out of the room,
A first actuator that controls opening and closing of the first damper is coupled to the first damper.
A second actuator that controls opening and closing of the second damper is connected to the second damper,
The first actuator and the second actuator are communicably connected,
The first actuator includes a first sensor that detects the temperature, humidity, carbon dioxide concentration, or smoke concentration of the air flowing in the air conditioning duct, and a first CPU that controls opening and closing of the first damper; temperature of the air, humidity, concentration of carbon dioxide, or a target value of the concentration of smoke is coupled to the first memory to be recorded,
The second actuator includes a second sensor that detects the temperature, humidity, carbon dioxide concentration, or smoke concentration of the air flowing in the exhaust duct, and a second CPU that controls opening and closing of the second damper; A second memory that records a target value of air concentration, humidity, carbon dioxide concentration, or smoke concentration ,
The first CPU controls the first damper based on both outputs of the first sensor and the second sensor so that the indoor air concentration, humidity, carbon dioxide concentration, or smoke concentration becomes the target value. Control opening and closing,
The second CPU controls the second damper based on both outputs of the first sensor and the second sensor so that the indoor air concentration, humidity, carbon dioxide concentration, or smoke concentration becomes the target value. A damper control system that controls opening and closing. The damper control system according to claim 1, wherein the first actuator and the second actuator are connected by a jumper wiring. The damper control system according to claim 2, wherein the first actuator and the second actuator are connected by a hybrid cable including an optical fiber cable and a power line. The damper control system according to claim 1, wherein the first actuator and / or the second actuator and the outside are connected by a hybrid cable including an optical fiber cable and a power line. The damper control system according to claim 3 or 4, wherein the hybrid cable includes an optical fiber cable and two conductive wires or two conductive layers provided around the optical fiber cable.

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