KR100284840B1 - Heating control system and boiler - Google Patents

Abstract

Heating control system according to an embodiment of the present invention is provided for each of the passages of the return water pipes arranged in correspondence with each of the plurality of sensor valves 8, the sensor valve 8, the boiler ( 1) and a connection unit 9 connected to the power supply 100 and controlling the operation of the boiler 1 and the circulation pump 110, wherein the plurality of sensor valves 8 respectively control the temperature of the return water. The water temperature sensor 85 to be measured and the temperature controller 82 connected to the water temperature sensor 85 to set a heating temperature are compared with the temperature of the water temperature sensor 85 and the temperature of the temperature controller 82. Valve control means for generating a valve opening signal and a valve closing signal, and valve driving means for opening and closing the valve in accordance with the valve opening signal and the valve closing signal, wherein the connection unit 9 includes the valve control means for opening the valve. Start the boiler (1) when the signal is generated Boiler control means for stopping the boiler operation when generating a closing signal, and when the valve control means generates a valve open signal to operate the circulation pump 110, and stops the operation of the circulation pump 110 when generating the valve closing signal And a circulating pump control means for periodically generating a valve open signal and a circulating pump operation signal to periodically detect the water temperature of the circulating water.

Description

Heating control system and boiler

The present invention relates to a heating control system, and more particularly, to a heating control system capable of individually controlling temperature for each heating valve and a boiler in which the heating control system is embedded.

In the case of the conventional heating system, as shown in FIG. 1, the heating system is controlled based on the indoor air temperature detected by the temperature sensor inside the temperature controller 3. In other words, the temperature sensor measures the temperature of the indoor air, not the temperature of the floor. For example, if the air suddenly flows from the outside to the room, a gap occurs between the actual floor temperature and the room temperature, but the boiler operates according to the set temperature. Will be

In addition, even if the floor is warmed to some extent, it takes a long time to warm up to the temperature controller position as the air from the heated floor rises to the convection phenomenon and accumulates from above, and if the cold air keeps coming in from the outside, the boiler does not turn off. It will continue to run and the floor will heat up and this will turn off the boiler. Due to these inconveniences, the conventional thermostat substantially only functions as a switch to turn ON / OFF. In other words, if the room is cold, the boiler is operated by raising the temperature in the thermostat, and if it is hot, the boiler is stopped by lowering the temperature of the thermostat, resulting in a passively controlled heating system rather than automatic control, which significantly increases fuel consumption. .

In order to improve this problem, some boilers control the boiler by removing the temperature sensor from the room temperature controller and installing the water temperature sensing temperature sensor in the return pipe of the boiler. In this case, the uncontrollable state due to the inflow of external air does not occur as described above, but when heating multiple rooms and living rooms, the heating water pipe is relatively short and the hot place is close, and the long pipe is cold and the far place is cold. In addition, if you need to control the temperature of each room individually, you only need to control each room with a valve in the distributor pipe of the boiler because only the heating temperature of the boiler increases the temperature of all the rooms. However, as is well known, the adjustment by the valve has a problem in its precision, and the heating water does not flow at the correct ratio according to the adjustment state of each valve. In other words, a room with weakly controlled heating can be a colder room, so it is difficult to control the temperature as intended, such as having to adjust the valve again.

In addition, there is a problem of unnecessary waste of heat by always operating the circulation pump to detect the water temperature, and also troublesome wiring between the temperature controller and the boiler or control valve.

The present invention is to solve this problem, the first object is to provide a heating system that can accurately and individually control the temperature of each room by measuring the water temperature, and also minimize the wiring between the thermostat and the control target.

A second object of the present invention is to provide a heating system capable of minimizing the operating time of the circulation pump for measuring the water temperature to suppress unnecessary energy loss.

It is a third object of the present invention to provide a heating system capable of remotely controlling temperature control in a digital manner.

1 is a system diagram showing a conventional heating system.

2 is a system diagram showing a heating system in which a valve and a heating control device are integrated together as a first embodiment of the present invention.

3 (a) is a perspective view showing the outer plate of the sensor valve according to the first embodiment of the present invention.

3 (b) is a sectional view showing the inside of the sensor valve according to the first embodiment of the present invention.

3 (c) is a cross-sectional view showing the relationship between the water temperature measuring sensor and the valve body.

4 is a perspective view showing the appearance of the connection unit according to the first embodiment of the present invention.

Figure 5 (a) is a schematic system diagram showing the connection relationship between the sensor valve and the connection unit according to the first embodiment of the present invention and other devices.

5 (b) is a circuit diagram showing a more detailed connection relationship between the sensor valve and the connection unit according to the first embodiment of the present invention.

6 (a) is an internal circuit diagram of a sensor valve according to a first embodiment of the present invention.

6 (b) is an internal circuit diagram of a connection unit according to a first embodiment of the present invention.

7 is a schematic diagram showing a heating system in which a valve and a heating control device are integrated together as a second embodiment of the present invention.

8 (a) is a perspective view showing the appearance of a sensor valve according to a second embodiment of the present invention.

8 (b) is a cross-sectional view showing the interior of the line sensor valve according to a second embodiment of the present invention.

9 is a perspective view showing the appearance of a connection unit according to a second embodiment of the present invention.

10 (a) is a schematic system diagram showing a connection relationship between a sensor valve, a connection unit, and a thermostat unit and other devices according to a second embodiment of the present invention.

10 (b) is a circuit diagram showing a more detailed connection relationship between a sensor valve, a connection unit and a temperature controller unit according to a second embodiment of the present invention.

11 (a) is an internal circuit diagram of a sensor valve according to a second embodiment of the present invention.

11 (b) is an internal circuit diagram of a connection unit and a temperature controller according to a second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: boiler 2: conventional valve

3: conventional temperature controller 5: floor heating tube

6: supply water pipe 7: refund water pipe

8: sensor valve (invention) 81: valve manual lever

82: temperature controller 83: first connector

84: second connector 85: water temperature sensor

86: valve body 87: control unit

88: water temperature sensor connector 89: motor

9: connection unit 91 of the present invention: first connector (circulation pump control terminal)

92: 2nd connector (boiler control terminal) 93: 3rd connector (power connector)

94: 4th connector (connector cable connector)

95: fifth connector (temperature control unit connection connector)

100: power supply device 110: circulation pump

120: control unit 120-2A: closing limit switch

120-2B: Open limit switch 130: Connection cable

8A: Sensor valve (without temperature controller) 87A: Control unit (serial communication method)

9A: Connection unit (serial communication method) 120A: Control unit

400: temperature controller unit 401: valve operation lamp

500: Sensor valve internal CPU 501: D / A converter

502: dip switch

In order to achieve the above object, the heating control system according to the first aspect of the present invention controls the heating temperature by measuring the temperature in the return water returned to the return water pipe through the supply water pipe of the boiler, corresponding to each room. And a plurality of sensor valves installed in each passage of the return water pipes arranged at the same time and connected in a logical OR relationship with each other, and a connection unit connected to the sensor valve, the boiler, and the power supply to control the operation of the boiler and the circulation pump. The sensor valve of the water temperature sensor for measuring the temperature of the return water, the temperature controller is connected to the water temperature sensor to set the heating temperature, the valve opening signal and the valve by comparing the temperature of the water temperature sensor and the temperature of the temperature controller Valve control means for generating a closing signal and valve driving means for opening and closing the valve in accordance with the valve opening signal and the valve closing signal. In addition, the connection unit is a boiler control means wave to operate the boiler when the valve control means generates a valve open signal, and to stop the boiler operation when generating a valve closing signal, when the valve control means generates a valve open signal Circulating pump control means for operating the circulating pump and stopping the operation of the circulating pump when a valve closing signal is generated, and a periodic water temperature for periodically detecting valve temperature by generating a valve opening signal and a circulating pump operation signal. Detection signal generating means.

In the heating control system, when the heating target reaches the set temperature and the boiler stops, the operation of the circulation pump is also stopped, and the circulation pump may be configured to operate periodically according to the signal generation of the water temperature detection signal generating means.

The heating control system according to the second aspect of the present invention controls the heating temperature by measuring the temperature in the return water returning to the return water pipe through the supply water pipe of the boiler, the control of the return water pipes arranged for each room A plurality of sensor valves installed in each passage and connected to each other in a logical OR relationship, a connection unit connected to a sensor valve, a boiler, and a power supply to control the operation of a boiler and a circulation pump; and a temperature control connected to the sensor valve and the connection unit. The temperature control unit is provided with a unit corresponding to each room, and a temperature controller for setting the temperature of each room, and input the temperature set value from the temperature controller as the converted digital value to the sensor in a serial manner Output to valve and generate valve open signal and circulating pump operation signal periodically to detect water temperature of circulating water periodically And a first processor for transmitting a periodic water temperature detection signal to the connection unit, wherein the plurality of sensor valves each include a water temperature sensor for measuring the temperature of the returned water and a temperature controller as digital data sent from the first processor. A valve control for generating a valve opening signal and a valve closing signal according to a result of the comparison by comparing a temperature of the second temperature controller and the temperature controller output from the second processor with the temperature value output from the second processor. Means and valve driving means for opening and closing the valve in accordance with the valve opening signal and the valve closing signal, wherein the connection unit operates the boiler when the valve control means and the first processor generate the valve opening signal, Boiler control means for stopping the boiler operation when generating a closing signal, the valve control means and the first The Rigi operates the circulating pump in the event the valve-opening signal, and includes a circulation pump control means in the event the valve closing signal disables operation of the circulation pump.

In the heating control system of the second aspect, when the heating object reaches the set temperature and the boiler stops, the operation of the circulating pump is also stopped, after which the circulating pump is subjected to every hour T1 according to the signal generation of the water temperature detection operation signal generating means. It can also be configured to operate periodically for a certain time (T2).

In addition, after the heating of the heating target is completed and the first processor is finished, the first cycle T1 for operating the circulation pump for water temperature detection arrives, and the circulation pump 110 is operated again. The period T1 may be reduced for a predetermined time when all of 8A are open, and the signal for increasing the period T1 for a predetermined time may be generated when the sensor valve 8A is closed while the boiler is operated.

According to a third aspect of the present invention, there is provided a boiler incorporating a connection unit or a temperature control unit.

Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings. 2 is a system diagram of a heating system according to a first embodiment of the present invention, in which a feed water pipe 6 of a boiler is connected to each heating pipe 5 as in the prior art. However, the difference from the conventional method is that instead of the valve connected to the conventional water supply pipe, the water temperature sensor 85, the control unit 120 and the sensor valve 8 with the valve driving unit is added, and this sensor valve installed in each water supply pipe of each room ( 8) is connected to the OR connection and connected to the connection unit 9, which is connected to the circulating pump 110 or the boiler 1 in accordance with the signal from the sensor valve (8). There is a difference in that.

5 is a view showing a connection relationship between each sensor valve 8, the connection unit 9 and the power supply 100, the first connector 83 and the second connector 84 of each sensor valve (8) is connected It is interconnected by the cable 130, and is continuously connected to the fourth connector 94 of the connection unit (9). The control line of the circulation pump 110 and the control line of the boiler 1 are connected to the first connector 91 and the second connector 92 (see also fifth (a)) of the connection unit 9, and the power supply device. 100 is connected to the third connector 93 (see also fifth (a)) of the connection unit 9. The positional relationship of the connectors of the connection unit 9 is shown in FIG. 4 as an external perspective view.

Figure 3 (a) is an external perspective view of the sensor valve 8 with a built-in temperature controller according to the present invention, Figure 3 (b) is an internal cross-sectional view, Figure 3 (c) is a water temperature sensor 85 is the valve body It is sectional drawing which shows the state arrange | positioned at 86. The sensor valve 8 largely includes a control unit 87 and a valve body 86. The control unit 87 includes a valve manual lever 81, a temperature controller 82, a first connector 83, and a second. The connector 84, the valve opening and closing motor 89, the valve closing limit switch 120-2A, the valve opening limit limit switch 120-2B, the control unit 120, and the water temperature sensor connector 88 Is disposed, the water temperature sensor 85 is disposed in the valve body 86, the water temperature sensor 85 is connected to the connector 88 through a cable.

Here, each connector is connected with the control unit 120, and the first and second connectors 83 and 84 are for connecting with the other sensor valve 8 or the connection unit (9). In addition, the function of each terminal of the first and second connectors is the power supply voltage supply terminals VI (VO), GI (GO), and the control unit 8 for operating the control unit 120 and the motor 89. Control output signal BI (BO) for giving a request signal to connection unit 9 to operate the control unit 9, forcibly opening the valve for heating water circulation when measuring the temperature of the floor at regular intervals from the connection unit 9; There is a control signal input terminal MI (MO) which acts. The VI and VO, GI and GO, BI and BO, MI and MO terminals are shorted inside the controller.

6 (a) and 6 (b) show an internal circuit diagram of the control unit 120 in the sensor valve 8 and the connection unit 9 connected to the control unit, wherein the control unit 120 includes a temperature controller 82. And a valve control means for controlling the valve opening and closing, wherein the connection unit 9 operates the boiler 1 when the valve control means generates the valve open signal, and stops the boiler operation when the valve closing signal is generated. Circulating pump control means for operating the circulation pump when the valve control means generates the valve open signal, and stopping the operation of the circulating pump when the valve closing signal is generated, and periodically generating the valve open signal and the circulating pump operation signal. It includes a means for generating a periodic water temperature detection signal for detecting the water temperature of the circulating water, the details of the circuit diagrams of Figures 6 (a) and 6 (b) can be understood in the following description of operation. .

Next, operations according to the configuration of the first embodiment of the present invention will be described.

In the following description, the temperature measured by the temperature sensor 85 is called "measurement temperature", and the temperature set by the temperature controller 82 is called "set temperature". Referring to FIG. 2, the heating water heated in the boiler 1 is supplied to each room through the supply water pipe 6, and the heating water passing through the heating pipe 5 in each room has a lower temperature and a sensor valve ( It passes through the body of (8) (operation 1), and then passes through the circulation pump 110 (bore boiler type or detachable type) and enters the refill port 7 of the boiler 1 to be reheated. During the process of operation 1, the temperature sensed by the temperature sensor 85 (see also third (b)) attached to the inlet body of the valve body 86 is higher than the temperature set by the temperature controller 82. If low, it is controlled by the valve control means of the built-in control unit 120 to fully open the valve.

This process will be described with reference to FIGS. 6 (a) and 6 (b). In FIG. 6 (a), when the measured temperature is lower than the set temperature, the resistance of the temperature sensor 85 becomes larger than the resistance of the temperature controller 82, so that the + terminal of IC1A has a lower voltage than the-terminal, so the output of IC1A is It falls to OV. At this time, the current flows to the base of Q6 by R14, so that Q6 is turned on and power is supplied to the temperature controller 82 of the bridge circuit so that the temperature comparison operation of the temperature controller 82 and the temperature sensor 85 can be performed. Since the output of IC1A is OV, no current flows to the bases of Q1 and Q3. Q1 and Q3 are turned off and Q1 is turned off, so that current flows to the base of Q5 by R9 and R12, so that Q5 is turned on and R10 is the base of Q2. Q2 turns on (current 2) (valve is open). The current flowing in the motor 89 flows in the order of Q2, S1, + terminal of the motor 89,-terminal of the motor 89, S2, Q5, and the motor 89 rotates in the forward direction. At this time, the valve rotates in the open direction, and when the valve is fully opened, the limit switch S2 (120-2B) is turned off by the rotation angle of the motor (operation 3), so that the motor current is cut off and the valve remains open ( Operation 4). At this time, since the input of the IC1B is connected with the opposite polarity to the IC1A, the output of the IC1B is increased to 5V (operation 5), and current flows to the BO terminal, the BI terminal of the connection unit 9, and the base of R100 and Q100 by D4. Q100 turns on and relay RL100 operates to operate the boiler connected to the BOIL terminal (operation 6) (see Figure 6 (b)). By operation 5, current flows to the bases of R106, D102, and Q102 in the connection unit 9 shown in Fig. 6 (b) and the terminals D4, BO, BI, and Q102 are turned on, and RL101 is operated and connected to the PUMP terminal. The circulating pump 110 is operated (operation 7). In operation 4, operation 6 and operation 7, the heating water heated in the boiler is circulated to heat the floor, and the heating water passing through the room also increases in temperature.

After a certain period of time, if the temperature sensed by the temperature sensor 85 in the process of operation 1 is higher than the temperature set by the temperature controller 82, it is detected by the built-in control unit 120 to close the valve completely.

This process will be described again with reference to FIGS. 6 (a) and 6 (b). First, referring to FIG. 6 (a), when the measured temperature is higher than the set temperature, the resistance of the temperature sensor 85 becomes smaller than the resistance of the temperature controller 82 so that the + terminal of IC1A has a higher voltage than the-terminal. The output of IC1A is increased to + 5V. At this time, since current does not flow to the bases of R14 and Q6, Q6 is turned off and power is not supplied to the temperature controller 82 of the bridge circuit, and thus the temperature comparison operation by the temperature controller 82 and the temperature sensor 85 is stopped (operation). 8) IC1A output stage maintains + 5V. To stop the temperature comparison operation in operation 8, since the sensor valve 8 is installed in the boiler room, when the temperature of the valve body 86 decreases due to cold air, the temperature sensor 85 may set a temperature other than the temperature of the floor. It is to stop in order to prevent malfunction by measuring. When current flows to the bases of R13, R7, and Q1, Q1 is turned on, so that no current flows to R12, so Q5 is turned off. A current flows through the bases of R13, R8, and Q3 to turn on Q3, and a current flows through the base of Q4 by R11 to turn on Q4 (operation 9) (the valve is closed). The current flowing in the motor 89 flows to Q4 and D2 (since limit switch S2 is turned off by operation 3), the negative terminal of the motor 89, the positive terminal of the motor 89, S1, Q3, and the motor 89 Rotates in the reverse direction. This operation is possible because the limit switch S2 (120-2A) has already been turned off in the process of operation 3. When the motor 89 rotates in this way, the valve is closed. When the valve is completely closed, the limit switch S1 (120-2A) is turned off by the rotation angle of the motor 89, and the current flowing to the motor 89 is cut off. The valve remains closed (operation 10). At this time, the output of IC1B is OV and no current flows to D4. Therefore, no current flows in the passages from the BO terminal of the control unit 120 to the bases of the BI terminals, R100 and Q100 of the connection unit 9 shown in FIG. 6 (b). As a result, the connection unit 9 The relay RL100 is turned off and the boiler 1 connected to the BOIL terminal is stopped (operation 11). In addition, since no current flows through the bases of R106, D102, and Q102, Q102 is turned off, RL101 is turned off, and the circulation pump 110 connected to the PUMP terminal is stopped (operation 12). The heating is stopped by the operations 10, 11, and 12, and as time passes, the temperature of the room is lowered (operation 13). Here, the valve driving method is described as a motor, but a solenoid type or a liquid temperature expansion type may be used.

Referring to FIG. 5, when installing one connecting unit 9 and several sensor valves 8, the connection between each sensor valve is as follows. That is, the fourth connector 94 of the connection unit 9 is connected to the first connector 83 of the first sensor valve through the connection cable 130, and the second connector 84 of the first sensor valve is made of the first connector 83. The first connector 83 of the two-sensor valve and the connection cable 130 are connected, and the other third sensor valve is also connected in this way.

This state is shown in detail in FIG. 5 (b), and the corresponding pins VI, VO, GI, GO, BI, BO, and MI of the second connector 84 and the first connector 83 of the sensor valve 8 are illustrated. The and MOs are interconnected while each pin of the sensor valve 8 is connected on the same wire as the corresponding pins of the other sensor valves. That is, all VI and VO lines are + 12V power supply voltage lines, all GI and GO lines are OV voltage lines, and all BI and BO lines are lower than the set temperature in each sensor valve 8 (operation 14). + 5V output (when the valve is open and the boiler has to run). If at least one of the several sensor valves is in operation 14, the BI and BO lines will rise to + 5V (this is called a “WIRED OR” operation), and this state is connected to the boiler (1). ) Is determined as a request signal to operate. The MI and MO lines are terminals falling into the OV during the T2 time period by the counter every period T1 repeated every fixed time in the connection unit 9. When this line drops to OV, the valves of all sensor valves 8 open.

In operation 13, the sensor valve 8A with the valve closed cannot detect the temperature change in the room. Because the valve is closed, the heating water does not circulate. Since the valve is open from operation 1 to operation 7, the heating water passes through the valve body 86, the temperature sensor 85 can continue to detect the change in the water temperature. However, since the valve is closed after operation 9, the heating water does not flow and the temperature sensor 85 does not detect the temperature of the floor.

In order to solve this problem, every sensor valve 8 is opened at a predetermined time T1 and the circulation pump 110 is driven so that the heating water located at the bottom of the room passes through the valve body 86 so that the temperature sensor 85 is heated. Forced circulation for a time enough to sense the water temperature (T2), and when the end of T2 to cancel the forced circulation state of the circulation pump 110 and the control unit 120.

6A and 6B, the IC100 of the connection unit 9 repeatedly executes an oscillator that counts T1 time. T1 is set as a mouth time that can be controlled efficiently. If it is too short, it may cool the heated room. If it is too long, it may not be heated because the floor cools down. IC100 starts counting T1 (30 minutes) time, and when T1 ends, it outputs HIGH pulse from Q terminal of IC100 and starts counting T1 (30 minutes) again. (Repeated indefinitely).

The trigger terminal of IC101 starts counting the time T2 when a HIGH pulse is input from Q of IC100 and keeps the output Q high while counting. At this time, Q102 and Q101 are turned on by R102 and R104, and Q101 is turned on so that the MI terminal of all the control units 120 connected to the MO terminal (MO, MI line in FIG. 5 (b)) is lowered to 0V, and R7 is set by D3. , R8 connection point (output point of ICIA) is lowered to 0V, Q1, Q3, Q4 are turned OFF, Q2, Q3 is turned ON and all valves are forcibly opened (operation 15).

In addition, Q102 is turned on, RL101 is turned on, and the circulation pump 110 connected to the PUMP terminal is operated (operation 16). In operation 15 and operation 16, the heating water in each room at the floor position passes through the valve body 86 so that the temperature sensor 85 senses the temperature (operation 17). When the time T2 ends, the Q terminal of IC101 goes down to OV, and both Q101 and Q102 are turned off, the circulation pump 110 is stopped, and each control unit 120 is released from the forced open state and switches to the self-control state. In operation 17, the sensor valve 8 having a lower measuring temperature than the set temperature opens and heats the valve, and the sensor valve having a higher measuring temperature than the set temperature keeps the valve closed. By repeating this operation according to the T1 cycle, the temperature in the room is always controlled to be consistent with the set temperature, and each room can be controlled independently.

Next, a second embodiment of the present invention will be described.

7 shows a schematic diagram of a heating system according to a second embodiment of the present invention, which differs from the first embodiment in that the temperature controller 82 is separated from the sensor valve 8A and communicates with each other in digital data. to be.

8 (a) and 8 (b) are external perspective views and cross-sectional views of the sensor valve 8A according to the second embodiment, which are different from the first embodiment in that the temperature controller 82 is not disposed. .

9 is a perspective view of a connection unit 9A according to the second embodiment, which differs from the first embodiment in that a fifth connector 95 is additionally arranged to include a temperature controller unit 400 including a temperature controller 82. Is connected by).

10 (a) and 10 (b) are diagrams showing a relationship in which the sensor valve 8A, the connection unit 9A, the power supply 100, and the temperature controller unit 400 are coupled to each terminal VO, VI. ), (GO, GI), (DO, DI), (BO, BI) functions and coupling relations are the same as in the first embodiment, and as described above, the fifth connector 95 of the connection unit 9A It differs from the first embodiment in that the temperature controller unit 400 is connected.

11 (a) and 11 (b) show a circuit diagram of the control unit 120A, the connection unit 9A and the temperature controller unit 400 according to the second embodiment, the detailed configuration of which is the operation of the second embodiment. Explain through explanation.

Next, the operation according to the second embodiment will be described.

In the case of the first embodiment, as described above, since the temperature controller 82 is built in the sensor valve 8, the structure of the device can be configured simply and at a low price, but the temperature controller 82 is the sensor valve 8. Adjustment is rather inconvenient because it is built in.

It demonstrates with reference to FIG. 11 (a) and 11 (b). First, when the temperature controller 82 corresponding to each room is adjusted in the temperature control unit 400 of FIG. 11 (b), the set values of each room are sequentially read by the multiplexer IC202 by the CPU IC200, and the A / D After converting the analog amount into digital information by the converter IC201, the digital information is stored in the internal memory of the CPU IC200. Here, the CPU, A / D converter and multiplexer together form the first processor.

The CPU IC200 outputs the collected digital information to the DO terminal through the SDA pin. Data output from the DO terminal is connected to the DI and DO terminals of the connection unit 9A and the DI and DO terminals of all the sensor valves 8A. The DI and DO terminals of the control unit 120A of the sensor valve 8A are connected to the SDB pin of the CPU and are waiting to receive serial data of the DI and DO lines at all times. Serial communication data is a well-known technique for communicating with one line by setting the pulse width to "0" and "1". The serial communication information consists of one cycle of start bit to indicate the start of data, one byte of address to distinguish the sensor valve 8A, one byte of temperature data, and one cycle of signal to return whether the current valve is open or closed (operation 18). have. (Otherwise, I ² C, RS232C, etc.)

The temperature control unit 400 turns on the operation lamp 401 when the information returned in operation 18 is '1', and turns off the operation lamp 401 when it is '0'. Each sensor valve 8A sets an address so as not to overlap with the dip switch 502 (see also eleventh (a)) at the time of installation.When serial communication is performed, each sensor valve 8A corresponds to a magnetic address. Only data is accepted as temperature data.

In the control unit 120A of the sensor valve 8A of FIG. 11 (a), the CPU 500 stores the received temperature data in the internal memory (operation 19), and also directs the temperature data to the D / A converter 501. Print and keep that data. Here, the CPU 500 and the D / A converter 501 together constitute a second processor.

The analog value converted by the D / A converter 501 is input to ICIA and ICIB as R5 via R5 and controls the valve according to the temperature of the temperature sensor 85. When the measured temperature is lower than the D / A set temperature (analog value according to the temperature output from the D / A converter), the ICIA output goes down to OV and Q2 and Q5 are turned on to open the valve (operation 20). This voltage rises to 5V and is input to BI of the connection unit 9A at the BO terminal by D4.

Subsequently, current flows to the bases of D101, R102, and Q101 of the connection unit 9A of FIG. 11 (b), Q101 is turned on, and RL101 operates to operate the circulation pump 110 connected to the PUMP terminal 91 (operation). 21), current flows to the bases of R100 and Q100 so that Q100 is turned on and RL100 operates to operate the boiler 1, i.e., the boiler 1 connected to the second connector 92 (operation 22). By the operation 20, operation 21, operation 22, the heating water is circulated and the heating is started.

Over time, the temperature of each floor increases. If the measured temperature is higher than the D / A set temperature again in FIG. 11 (a), the IC1A output of the controller 120A is increased to + 5V (operation 23), and the valve is closed by turning on Q3 and Q4 (operation 24). The output of BC1B is lowered to 0V, so that current does not flow through the passage consisting of BI, D101, R102, and Q101 base of connection unit 9A of D4, BO, and 11 (b), so that Q101 is turned off and the PUMP terminal of RL101 is turned off. The connected circulating pump 110 is stopped (operation 25), and since no current flows through the bases of R100 and Q100, Q100 is turned off, RL100 is turned off, and the boiler 1 connected to the BOIL terminal is stopped (operation 26). ). Heating is stopped by operations 24, 25 and 26. In the operation 23 state, the SENS pin of the CPU 500 of FIG. 11 (a) rises to + 5V. As a result, the CPU 500 determines that the valve is closed, for example, by using the D / A converter 501. Outputs the digital value (in hexadecimal), and then the OUT pin of the D / A converter 501 is lowered to OV so that the reference inputs of IC1A and IC1B become OV, and as a result, the temperature sensor 85 of the bridge circuit. Even if the temperature changes, IC1A and IC1B do not operate and the temperature comparison operation by the temperature sensor 85 is stopped. The reason why the temperature comparison operation is stopped is because the sensor valve 8 is installed in the boiler room, when the temperature of the valve body 86 decreases due to cold air, the temperature sensor 85 measures a temperature other than the temperature of the floor. It is to prevent the malfunction accordingly.

Thus, if the boiler is stopped while the temperature comparison operation is stopped, the temperature of the floor naturally decreases as time passes.

Next, a method for measuring the temperature of the floor in the heating system according to the second embodiment of the present invention will be described.

Control of measuring the temperature of the floor when the valve is closed is controlled by the CPU (IC200) of the temperature control unit 400 of FIG. 11 (b), the T1 cycle by the CPU (IC200) of the temperature control unit 400 Raise the PUM pin to + 5U for every T2 hours (that is, the time the pump is running) for every repetition cycle of temperature measurement by operating the circulating pump (operation 27) .For example, OxFF (hexadecimal FF) (In operation 28). In operation 27, if the PUM is raised to + 5V, current flows through the passage consisting of the MI terminal of the MO terminal and the connection unit 9A, the base of D102, R102, and Q101, so that Q101 is turned on and RL101 is turned on to be connected to the PUMP terminal. The circulation pump 110 is operated (operation 29). In operation 28, for example, when OxFF is output to the serial communication line, the CPU 500 of the control unit 120A of all the sensor valves 8A is forced to operate and raises the BOI pin to 5V regardless of the serial data address. The current flows to the bases of R2 and Q6 so that Q6 is turned on and the IC1A output stage is lowered to OV so that Q2 and Q5 are turned on to open the valve (operation 30) (see also 11 (a)). In operation 29 and 30, the heating water is moved by the circulation pump 110 for a T2 time (operation 31). When the T2 time expires, the CPU IC200 of the temperature control unit 400 lowers the PUM to OV (operation 32) and outputs, for example, OxFE to the serial communication line (operation 33). By the operation 32, no current flows through the passage consisting of the MO of the temperature control unit 400, the MI of the connection unit 9A, the base of the D102, and the Q101, so that the Q101 and RL101 are turned off. The circulation pump 110 stops (operation 34). By operation 33, the control unit 120A of all the sensor valves 8A lowers the BOI pin to OV regardless of the address of the serial communication data, and no current flows to the bases of R2 and Q6 so that Q6 is turned off and the control unit 120A The forced circulation state is released, and the CPU 500 outputs the temperature data of the temperature controller stored in operation 19 to the D / A converter 501. (Operation 35). By the operation 34 and operation 35, the forced circulation is released and the temperature of the circulated heating water is sensed by the temperature sensor 85 of the sensor valve 8A, and after the completion of T2, each sensor valve 8A independently controls the temperature. Done. As such, the temperature of the floor is measured every T1 cycle. If the measured temperature is lower than the set temperature, open the valve and reheat it. If the measured temperature is higher than the set temperature, keep the valve closed.

Next, an efficient heating operation method according to the second embodiment of the present invention will be described.

After the initial heating, the CPU (IC200) of the temperature control unit 400 performs the temperature measurement after the switch-on period T1 of the first circulation pump and the operating time T2 of the circulation pump are finished, and then performs all the temperature measurement of all sensor valves 8A. When the measured temperature is lower than the set temperature at (ie when the boiler is running and all the valves are open) (operation 40), it is determined that the heated floor cools quickly and the T1 time (cycle) is shortened and executed (operation 41). When the measured temperature is higher than the set temperature in all the sensor valves 8A (that is, when all valves are closed because the boiler is not required to operate) (operation 42), it is determined that the heated floor cools slowly and T1 (cycle) is determined. It is given longer to execute (operation 43). Except for operation 40 (that is, when the measurement temperature is lower than the set temperature) and operation 42 (that is, when the measurement temperature is higher than the set temperature), the current T1 is applied without changing. By linking operation 41 (shortening period T1) and operation 43 (extending period T1), the CPU IC200 automatically adjusts and executes T1 time to operate efficiently and optimally.

According to the above configuration, the present invention can obtain the following effects.

1. According to the configuration of the first embodiment of the present invention, first, it is possible to control the opening and closing of the valve individually by measuring the temperature of the circulating water instead of the room air temperature, and secondly, the temperature controller and the valve are integrated so that the relevant wiring It may not work, and because the third cycle to operate the circulation pump periodically to control the heat insulation effect of the circulation water is higher than the conventional way to operate the circulation pump always.

2. According to the configuration of the second embodiment of the present invention, first, it is possible to control the opening and closing of the valve individually by measuring the temperature of the circulating water instead of the room air temperature for each room, and second, the temperature control is remotely Not only can it be controlled, but it can also be linked with home automation. Third, related wiring work is simple. Fourth, the circulation pump is operated periodically to control temperature. 5, the operating cycle of the fifth circulation pump itself can be increased or decreased as needed by the processor, thereby enabling more optimal heating control.

Claims (9)

A heating control system that controls the heating temperature by measuring the temperature in the return water returned to the return water pipe through the boiler supply water pipe. A plurality of sensor valves 8 connected in an OR relationship, and a connection unit connected to the sensor valve 8, the boiler 1, and the power supply 100 to control the operation of the boiler 1 and the circulation pump 110 ( 9), the plurality of sensor valves 8 are each a water temperature sensor 85 for measuring the temperature of the return water, and a temperature controller 85 is connected to the water temperature sensor 85 to set the heating temperature and Valve control means for generating a valve open signal and a valve closing signal by comparing the temperature of the water temperature sensor 82 and the temperature of the temperature controller 82, and opening and closing the valve according to the valve opening signal and the valve closing signal. A valve driving means for performing The connection unit 9 is a boiler control means for starting the boiler 1 when the valve control means generates a valve open signal, and stopping boiler operation when generating a valve close signal, and the valve control means provides a valve open signal. Circulating pump control means for operating the circulating pump when it occurs and stopping the operation of the circulating pump when generating the valve closing signal, and for generating the valve open signal and the circulating pump operation signal periodically to detect the water temperature of the circulating water periodically. Heating control system comprising a periodic water temperature detection signal generating means. The heating control according to claim 1, wherein the operation of the circulation pump is stopped when the heating object reaches the set temperature and the boiler is stopped, after which the circulation pump periodically operates according to the signal generation of the water temperature detection signal generating means. system. A heating control system that controls the heating temperature by measuring the temperature in the return water returned to the return water pipe through the boiler supply water pipe. A plurality of sensor valves 8A connected in an OR relationship, and a connection unit connected to the sensor valve 8A, the boiler 1 and the power supply 100 to control the operation of the boiler 1 and the circulation pump 110 ( 9A) and a temperature control unit 400 connected to the sensor valve 8A and the connection unit 9A, wherein the temperature control unit 400 is installed in a number corresponding to each room so as to adjust the temperature of each room. A temperature controller 82 to be set and a temperature set value from the temperature controller 82 are input as a converted digital value and output to the sensor valve 8A in a serial manner, and the valve open signal and the circulation pump are operated periodically. To generate a signal periodically In order to detect the water temperature of the furnace circulating water, a first processor for transmitting a periodic water temperature detection signal to the connection unit 9A is provided, and the plurality of sensor valves 8A each include a water temperature sensor for measuring the temperature of the return water. 85), a second processor for receiving and outputting a temperature of the temperature controller 82 as digital data sent from the first processor, a temperature value of the temperature controller 82 output from the second processor, and the water temperature sensor ( Valve control means for generating a valve opening signal and a valve closing signal according to the comparison result by comparing the temperature value of 85), and valve driving means for opening and closing the valve in accordance with the valve opening signal and the valve closing signal; The connection unit 9A activates the boiler 1 when the valve control means and the first processor generate the valve open signal, and stops the boiler operation when the valve close signal is generated. And a circulating pump control means for operating the circulation pump when the valve control means and the first processor generate the valve open signal, and stopping the operation of the circulating pump when the valve closing signal is generated. Heating control system. 4. The water temperature detecting operation according to claim 3, wherein the heating is stopped when the heating object reaches the set temperature, and thereafter, the water temperature detecting operation is periodically performed for a predetermined time T2 every time T1 according to the generation of the signal of the water temperature detecting signal generating means every predetermined time. Heating control system, characterized in that for executing. 5. The boiler of claim 3, wherein the first processor is operated again after the initial period T1 for operating the circulation pump for water temperature detection after the completion of the heating of the heating target and the completion of the boiler operation. While the sensor valves 8A are all open, the period T1 is decreased for a predetermined time, and if the sensor valves 8A are all closed while the boiler is operating, a signal for increasing the period T1 is generated. Heating control system. It is composed of a plurality of sensor valves 8 and boilers installed in the passages of the return water pipes arranged in correspondence with each room and connected in a logical OR relationship, and the sensor valves 8 respectively measure the temperature of the return water. Compared to the water temperature sensor 85, the temperature controller 82 is connected to the water temperature sensor 85 to set the heating temperature, the temperature of the water temperature sensor 85 and the temperature of the temperature controller 82 In the heating control system comprising a valve control means for generating a valve opening signal and a valve closing signal, and a valve driving means for opening and closing the valve in accordance with the valve opening signal and the valve closing signal, the boiler includes a sensor valve (8). And a connection unit 9 connected to the power supply 100 to control the operation of the circulation pump 110, wherein the connection unit 9 includes a boiler 9 when the valve control means generates a valve open signal. Operation, valve closing Boiler control means for stopping the boiler operation when generating, and the circulating pump control means for operating the circulating pump when the valve control means generates a valve open signal, and stops the operation of the circulating pump when generating the valve closing signal, and And a periodic water temperature detection signal generating means for periodically detecting a water temperature of the circulating water by generating a valve opening signal and a circulation pump operation signal. A plurality of sensor valves 8A and a boiler are installed in each of the passages of the return water pipes arranged in correspondence with each room and connected to each other in a logical OR relationship. The plurality of sensor valves 8A each have a temperature of return water. And a second processor for receiving and outputting the temperature of the temperature controller 82 as digital data sent from the first processor, and a temperature of the temperature controller 82 output from the second processor. A valve control means for generating a valve opening signal and a valve closing signal according to the comparison result by comparing a value with a temperature value of the water temperature sensor 85, and a valve for opening and closing the valve according to the valve opening signal and the valve closing signal. In the heating control system including a drive means, the boiler is connected to the sensor valve (8A) and the power source 100 side 9A for controlling the operation of the circulation pump 110 and the sensor bell A temperature control unit 400 connected to the bar 8A and the connection unit 9A, and the temperature control unit 400 is installed in a number corresponding to each room to set the temperature of each room. And a temperature set value from the temperature controller 82 as a converted digital value and output to the sensor valve 8A in a serial manner, periodically generating a valve open signal and a circulating pump operation signal. A first processor for transmitting a periodic water temperature detection signal to the connection unit 9A for detecting the water temperature of the circulating water, wherein the connection unit 9A is provided with a valve opening signal by the valve control means and the first processor. Boiler control means for operating the boiler (1) when generated, and stopping the boiler operation when generating the valve closing signal, and the circulation control pump when the valve control means and the first processor generates a valve opening signal And a circulation pump control means for activating and stopping the operation of the circulation pump when generating a valve closing signal. The heating system consists of a modular valve body 86 installed in each of the passages of the return water pipes arranged in correspondence with each room, and is connected to at least the power source 100, the circulation pump 110 and the connection unit 9 to the outside. A sensor valve 8 for transmitting and receiving relevant information such as an operation command and an operation state of the sensor, the water temperature sensor 85 measuring a temperature of the returned water and a temperature connected to the water temperature sensor 85 to set a heating temperature; The controller 82 compares the temperature of the water temperature sensor 85 with the temperature of the temperature controller 82 to generate a valve opening signal and a valve closing signal, and according to the valve opening signal and the valve opening signal and the valve closing signal. And a valve driving means for opening and closing the valve. The heating system consists of a modular valve body 86 installed in each of the passages of the return water pipes arranged in correspondence with each room, and is connected to at least the power source 100, the circulation pump 110, and the connection unit 9A. A sensor valve 8A that transmits and receives related information such as an operation command and an operation state of the sensor, and a processor for receiving and outputting the temperature of the water temperature sensor 85 for measuring the temperature of the returned water and the temperature controller 82 as digital data. And valve control means and valve opening for generating a valve opening signal and a valve closing signal according to the comparison result by comparing the temperature value of the temperature controller 82 outputted from the processor with the temperature value of the water temperature sensor 85. And a valve driving means for opening and closing the valve in accordance with the signal and the valve closing signal.