JP3837224B2 - Hot water heater - Google Patents

Description

[0001]
[Industrial application fields]
The present application relates to a hot water heating apparatus in which a heat operating valve for supplying hot water to each terminal provided with a radiator including a floor heating panel is provided in a heat source device, and particularly to a method for controlling the heat operating valve.
[0002]
[Prior art]
Conventionally, in this type of hot water heater, a thermal valve that controls the supply of hot water is provided corresponding to the terminal of each room (system), and the amount of hot water supplied to each room is appropriately adjusted by opening and closing the thermal valve. The room temperature was controlled to a comfortable temperature by controlling.
[0003]
[Problems to be solved by the invention]
In such a hot water heating apparatus, for example, when heating a large room such as a kindergarten or a hall, a plurality of radiators (for example, in the case of floor heating) are arranged under the floor and the room temperature is controlled by one remote controller. There is a need.
[0004]
In this case, if a plurality of radiators are connected to the hot water supply port of the heat source unit and these radiators are used at a time, the flow rate of the hot water to each radiator is reduced and the heating capacity is lowered. Also, in this case, it is configured to control the supply of hot water to multiple radiators by connecting another thermal valve in parallel to the thermal valve output corresponding to the output of the signal line connected to the remote control. In this case, a plurality of thermal valves are turned on (opened) at the same time, resulting in a large inrush current and a problem that the current fuse melts. The present invention provides a hot water heating and heating apparatus provided with a plurality of terminals, in which a reduction in heating capability is unlikely to occur.
[0005]
[Means for Solving the Problems]
The present invention of claim 1 includes a plurality of terminals comprising a radiator comprising a floor heating panel disposed in the heated chamber, is al provided corresponding to the plurality of terminals, the hot water supply to the terminal A plurality of thermal valves for stopping, a heat source device that supplies hot water to the plurality of terminals, and a hot water supply that is installed in the heated room and that is supplied to the heat source device according to a difference between room temperature and a set temperature A plurality of remote controllers for instructing signals, and depending on the number of terminals that are provided in the heat source unit and that use a plurality of thermal valves, thermal valve outputs corresponding to the number of terminals are combined on / off in a plurality of switches The heat source device is provided with a selection switch for grouping according to the above.
[0006]
According to a second aspect of the present invention, there is provided the hot water heating apparatus according to the first aspect, wherein the heat source device controls the opening and closing of the plurality of thermal valves when the plurality of thermal valves are opened. The configuration is such that the thermal valve is opened sequentially by shifting the valve start time, and when the plurality of thermal valves are closed, all the thermal valves are closed simultaneously.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present application will be described with reference to the accompanying drawings.
[0008]
In addition, the difference between the high temperature terminal and the low temperature terminal in the following text is that the heating is done by warm air such as an air conditioner (with a fan coil or a heat exchanger that circulates hot water) or a bath dryer (bathroom dryer). Because it requires hot water at a high temperature of around 80 ° C., it is expressed as a high-temperature terminal, and floor heating is possible by heating with a relatively low temperature hot water supply at around 40-60 ° C. Therefore, it is expressed as a low temperature terminal.
[0009]
FIG. 1 is a schematic diagram showing a system of a hot water heating apparatus of the present invention, in which (1) is a heat source machine that burns gas, petroleum, etc., and generates hot water by the combustion heat, (H1). H8) is used as a radiator for heating the room by supplying hot water heated and generated by the heat source unit (1) by a circulation pump (not shown) built in the heat source unit (1). The floor heating panel (radiator), (R1) ... (R8) sends a signal to (1) to turn on / off the thermal valve (SV1) ... (SV8) depending on the room temperature and the set temperature. H1) A floor heating remote controller (remote controller) that controls the room temperature to a set temperature by controlling the supply of hot water to (H8).
[0010]
FIG. 2 is a schematic diagram showing a control system for a hot water heating apparatus of the present invention, in which (2) is a high-temperature terminal composed of a hot water air conditioner or the like, and a communication circuit (1A) and a communication circuit (2A) of the heat source unit (1). ) Is connected to the heat source unit (1) through the signal line (X1) connected thereto. In addition, the heat source unit (1) is operated via the communication circuit (R1A) by the communication line (X2) composed of the power source and the communication line of the floor heating remote control (R1) (R8) as a low-temperature terminal. Is configured to be communicable. The high-temperature terminal (2) includes a microcomputer (2B), a key input unit (2C) for various settings, a display unit (2D) composed of an LCD, a lamp, etc., for detecting the room temperature A thermistor (2E), a communication circuit (2A) for communicating with the heat source unit (1), and the like are provided. Similarly, the floor heating remote controller (R1) similarly communicates with the microcomputer (R1B), the key input unit (2C), the display unit (R1D), the thermistor (R1E), and the heat source unit (1). (R1D) and the like are provided.
[0011]
In addition, the heat source device (1) includes a communication circuit (1A) for transmitting and receiving signals to and from each terminal, a microcomputer (1B) for controlling each circuit, a thermal valve driver (1C), a hot water thermistor (1D), A combustion control circuit (1E), an igniter (1F) such as a plug, and a gas valve (1G) are provided. FIG. 3 is a drive circuit diagram of the thermal valve, and shows a circuit diagram for driving the thermal valve (SV1)... (SV8) of the heat source machine (1). (1C) is a microcomputer. (1B) output (PO1)... (PO8) connected to each of the transistors (1C1)... (1C8), a driver for driving a thermal valve, and the output of the driver (1C) is output from each thermal valve (SV1). ) ... connected to relay (RY1) ... (RY8) corresponding to (SV8) and its contacts (RY1A) ... (RY8A).
[0012]
FIG. 4 is a schematic diagram showing the external appearance of the control board built in the heat source unit. Each terminal (high temperature / low temperature shared, high temperature dedicated terminal, 12 terminals in total) (TA1) (TA12) (not shown) signal lines (X1) ...... (X12) ...... is connected to a connector (CN1) ...... (CN12).
[0013]
(CN1A) ... (CN8A) is the terminal (TA1) ... (TA8) connected to the connector (CN1) ... (CN8) is the thermal valve (SV1) ... (SV8) ON / OFF This is a power line connector for supplying commercial power (AC 100 V) to the thermal valves (SV1)... (SV8) corresponding to each when the hot water supply is instructed by.
[0014]
(K1) is a selection switch for selecting a group for energizing the connector (CN1A) (CN8A) supplied to the thermal valve (SV1)... (SV8) . This selection switch (K1) is 2 The switch is composed of two switches (K1A) and (K1B), and these two switches (K1A) and (K1B) are switched to the modes A to D as shown in FIG . K is a heat source unit control circuit, which is mainly composed of the communication circuit (1A), microcomputer (1B), etc. of FIG. FIG. 5 shows the correspondence with the selection mode by the selection switch (K1) as an explanatory diagram. In FIG. 5, by switch OFF 1,2 (K1A) (K1B), select the mode A as the operation mode by the OFF, to turn OFF and ON the switch 1,2 (K1A) (K1B) Select mode B, select mode C by turning switches 1 and 2 (K1A) (K1B) ON and OFF, and select mode D by turning switches 1 and 2 (K1A) (K1B) ON and ON. Can be selected.
[0015]
The operation of the present application will be described below.
[0016]
FIG. 6 is a flowchart showing the control operation of the heat source device (1). First, the mode selected by the selection switch (K1) is determined. In this mode determination, it is first determined whether or not the A mode is selected (S1), and if it is selected, the mode A processing is performed (S2). If mode A is not selected, it is then determined whether mode B is selected (S3), and if it is selected, mode B processing is performed (S4). If mode B is not selected, it is next determined whether or not mode C is selected (S5), and if it is selected, processing in C mode is performed (S6). If mode C is not selected, it is determined that mode D is not selected, and mode D processing is performed (S7).
[0017]
Then, communication processing with each terminal (TA1)... (TA12) (not shown) is performed (S8), and if there is a warm water request signal from any terminal, combustion of the heat source machine is started to heat the warm water. Generate (S9).
[0018]
Hereinafter, based on FIGS. 7 and 8, motor - describing the operation of the de-A.
[0019]
When mode A is selected by the selection switch (K1), the heat source unit (1) is connected to each thermal valve (SV1) (...) based on the communication reception data from the terminal (TA1) (TA8). SV8) is controlled one by one by using the terminal counter (S1). In this embodiment, the thermal operation valve is described as corresponding to opening and OFF corresponding to closing.
[0020]
Therefore, as shown in FIG. 8, it is understood that the thermal valves (SV1)... (SV8) are turned on and off by turning on and off the reception data of the terminals (T1).
[0021]
That is, each of the eight terminals (high temperature / low temperature shared terminal) is independently controlled.
[0022]
Below with reference to FIGS. 9 and 10 mode - describing the operation of the de-B. Mode B is a mode for controlling the thermal valves (SV1)... (SV8) by dividing the two systems into four groups.
[0023]
When the terminal 1 is turned on, the terminal 2 is turned on with a delay of a predetermined time (T1 = 1 second). Similarly, the terminal 4 performs the ON / OFF operation depending on the operation of the terminal 3, the terminal 6 depends on the operation of the terminal 5, and the terminal 8 depends on the operation of the terminal 7. In this embodiment, when the terminal is turned on, it means that the operation of the terminal starts (heat radiation starts, hot water starts to circulate), and conversely, when the terminal is turned off, Used to mean stop (heat dissipation stops, circulation of hot water is stopped). As described above, since the selection switch for grouping the thermal valve outputs corresponding to the number of terminals according to the number of radiators (terminals) that use the thermal valve of the heat source machine in advance is provided, The output can be divided into groups, and it is difficult for all the radiators to reduce the flow of hot water at once, and it is possible to prevent the heating capacity from being reduced at the same time. In addition, when the grouped thermal valves are turned on, the time difference between them (in this embodiment, the example in which the predetermined time T1 is set is described. However, if the ON time is deviated, it is not necessarily every predetermined time. by adapted to give oN provided may) be inrush current generated by the simultaneous oN of Netsudoben as in the prior art without, current fuse - it's also possible to prevent the blowout of the figure.
[0024]
Hereinafter, mode on the basis of FIGS. 11 and 12 - will be described the operation of the de-C. Mode C is a mode for controlling the thermal valves (SV1)... (SV8) divided into two groups of four systems.
[0025]
When the terminal 1 is turned on, the terminal 2 is turned on after a predetermined time (T1 = 1 second), and the terminals 3 and 4 are sequentially turned on every T1.
[0026]
Hereinafter, mode on the basis of FIGS. 13 to 16 - for explaining the operation of the de D.
[0027]
In Mode D , when there is no terminal connection (no connection) or when a high temperature terminal is connected and a thermal valve is not required, the thermal valve corresponding to those conditions is changed to the terminal ( This is a mode to be operated depending on the operation of the terminal 1).
[0028]
<< Pattern 1 >> in FIG. 14 shows the operation when the remote controller (R1) is connected to the terminal 1, and shows that the thermal valve is sequentially turned on every T1.
[0029]
<Pattern 2> in FIG. 15 shows the operation when the remote control (R1) (R6) is connected to the terminal 1 and the terminal 6, and the terminals 2 to 5 are turned on / off according to the operation of the terminal 1. The terminals 7 and 8 show that the thermal valve is ON / OFF corresponding to the operation of the terminal 6.
[0030]
<Pattern 3> in FIG. 16 shows the operation when the terminal 4 is first connected to the terminal 1 and the terminal 4 by the remote control (R1) (R4) during the operation, and the terminal 7 after that is connected by the terminal 6 connection. , 8 illustrate operations subordinate to the operation of the terminal 6. As for the presence / absence determination of the terminal, if it is determined that communication has been established, it is determined that the terminal is disconnected even if the connector (CN1)... (CN12) is removed. Therefore, the determination is not changed without registering the presence of the terminal.
[0031]
In the hot water heating apparatus configured as described above, the presence or type of a connected terminal is automatically determined, and the thermal valve output of a terminal that is not used is used to easily control the thermal valve control of multiple systems with a single remote controller. Can do.
[0032]
【The invention's effect】
According to the first aspect of the present invention, the number of terminals using a plurality of thermal valves provided in the heat source unit is used to set the thermal valve output corresponding to the number of terminals to a combination of ON / OFF in a plurality of switches. Since the heat source unit is equipped with a selection switch for grouping according to the number of terminals, it is possible to output the thermal valve output corresponding to the number of terminals in multiple systems, and the hot water flow rate is reduced at once for all terminals It is possible to prevent such a situation, and to eliminate the need for complicated wiring change work.
[0033]
[0034]
According to the second aspect of the present invention, it is possible to prevent the inrush current generated by the simultaneous opening of the thermally operated valves as in the prior art, so that the current fuse can be prevented from being blown. .
[Brief description of the drawings]
FIG. 1 is a schematic view showing a system of a hot water heater of the present invention.
FIG. 2 is a schematic diagram showing a control system of the hot water heater.
FIG. 3 is a drive circuit diagram of a thermal valve in the hot water heater.
FIG. 4 is a schematic view showing an external appearance of a control board built in a heat source unit of the hot water heater.
FIG. 5 is an explanatory diagram illustrating a correspondence relationship between ON / OFF of a selection switch of the hot water heating apparatus and a selection mode.
FIG. 6 is a flowchart showing a control operation of a heat source unit of the hot water heating apparatus.
FIG. 7 is a flowchart showing a control operation when mode A is selected.
FIG. 8 is an operation explanatory diagram showing timings when mode A is selected.
FIG. 9 is a flowchart showing a control operation when mode B is selected.
FIG. 10 is an operation explanatory diagram showing timings when mode B is selected.
FIG. 11 is a flowchart showing a control operation when mode C is selected.
FIG. 12 is an operation explanatory diagram showing timings when mode C is selected.
FIG. 13 is a flowchart showing a control operation when mode D is selected.
FIG. 14 is an operation explanatory diagram showing timings when mode D (pattern 1) is selected.
FIG. 15 is an operation explanatory diagram showing timings when mode D (pattern 2) is selected.
FIG. 16 is an operation explanatory diagram showing timings when mode D (pattern 3) is selected.
[Explanation of symbols]
A Hot water heater 1 Heat source machine 2 High temperature terminal H1, ..., H8 Floor heating panel (terminal)
SV1, ..., SV8 Thermal valve R1, ..., R8 Remote control (remote controller)
K1 selection switch

Claims (2)

A plurality of terminals comprising a radiator comprising a floor heating panel disposed in the heated chamber, they respectively et provided corresponding into a plurality of terminals, a plurality of thermally activated for supplying and stopping of the hot water to the terminal A valve, a heat source device that supplies warm water for heating to the plurality of terminals, and a plurality of remote controllers that are installed in the heated room and instruct a hot water supply signal to the heat source device according to a difference between a room temperature and a set temperature. ,
According to the number of terminals that are provided in the heat source unit and use a plurality of thermal valves, a selection switch for grouping the thermal valve outputs corresponding to the number of terminals by a combination of ON / OFF in the plurality of switches is used as the heat source. A hot water heater provided in the machine . When the plurality of thermal valves are controlled to open and close, the heat source unit is configured to sequentially open the thermal valves by shifting the valve opening start time when the plurality of thermal valves are opened. The hot water heater according to claim 1, wherein when the valve is closed, all the heat valves are closed at the same time .

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