JPH10103683A - Heat supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat supply system capable of preventing capacity of a higher order priority terminal from being lowered even when the terminals are simultaneously used and a total amount of heat consumption is large. SOLUTION: A heat supply system includes a heat source machine for heating and supplying a heating medium, a plurality of terminals to which a heating medium is supplied from the heat source machine, and control means for controlling operations of the heat source machine and the terminals. In the system, the control means temporarily interrupts the operation of a lower order priority terminal when the plurality of the terminals are simultaneously used and a total heat amount required by each terminal is higher than the capacity of the heat source machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat source device for heating and supplying a heat medium, a plurality of terminals to which the heat medium is supplied from the heat source device, and to control the operation of the heat source devices and the terminal devices. The present invention relates to a heat supply system provided with control means.

[0002]

2. Description of the Related Art Generally, a heat supply system as described above generally includes a manually operated operation unit for instructing a heat source unit and each terminal unit to start and stop each operation, and this operation unit. A control unit that controls the start and stop of operation based on the operation information of the heat source unit, and a control unit on the heat source device side and a control unit on each of the terminal devices are provided so as to be able to communicate with each other. When an operation start is instructed in any of the plurality of terminal-side operation units, the control unit on the device side controls to start operation of the heat source device, and operates the plurality of terminal-side operations. When the operation stop is instructed in all the units, the heat source unit is controlled so as to stop the operation. Therefore, the operation can be started for each of a plurality of terminals, for example, a floor heater, a fan convector, a bathroom heater / dryer, and the like. The total amount of heat generated may exceed the output capability of the heat source unit.

[0003]

In such a case, the capability of each terminal decreases, and for example, even if a floor heater or a fan convector is operated, the room temperature does not rise to the set temperature.
People in the room sometimes felt discomfort. On the other hand, it is not always necessary to operate a bathroom heating / drying machine during a period when a plurality of terminals are used, and the operation may be postponed. That is, each terminal has a priority, and it is desirable to prevent the capability of a terminal having a particularly high priority according to the priority from being reduced. From the above viewpoint, there is room for improving the conventional heat supply system so as to cope with the case where the total heat consumption of each terminal is large.

The present invention has been made in view of such a point, and an object of the present invention is to prevent a decrease in performance of a terminal having a higher priority even when each terminal is used at the same time and the total amount of consumed heat is large. It is to provide a heat supply system which can be used.

[0005]

To achieve the above object, the present invention is characterized in that a heat source device for heating and supplying a heat medium and a plurality of terminals to which the heat medium is supplied from the heat source device. ,
In a heat supply system provided with a control unit for controlling the operation of the heat source unit and the terminal, the control unit is configured to control a total amount of heat required by each of the terminals when a plurality of the terminals are used at the same time. Has a control to temporarily stop the operation of a terminal having a lower priority when the capability of the heat source device is higher. Here, the “priority” is determined based on the idea that a terminal whose capacity reduction is not preferable is given priority, and, for example, a terminal in which more people expect a higher heating effect is assigned a priority. Can be determined as higher. Such priorities may be set manually or automatically in response to seasonal environmental changes or the like, or the priorities may be fixed. Temporary operation stop means temporarily stopping operation in anticipation of a state in which operation can be resumed.However, if temporary operation stop occurs intermittently, temporary operation stop may occur. The operation may be continued, and the operation may not be restarted due to the elapse of the timer setting time during that time.

In the present invention, when the operation is restarted, the operation of another terminal is stopped, and the operation is performed when the total amount of heat required by each terminal during operation becomes lower than the capacity of the heat source unit. Or restart the operation after a fixed period of time has passed,
The control means, after temporarily stopping the low-priority terminal, if the other terminal in operation becomes equal to or higher than the set temperature, control to resume the operation of the temporarily stopped terminal. It is more preferable to perform the above than the operation and effect described below.

As a method of comparing the total amount of heat required by each of the terminals with the capability of the heat source unit, the amount of heat required by each of the terminal units is calculated to calculate the total amount of heat, and the capability (output) of the heat source unit is calculated. Various methods, such as a method of comparing with a possible heat quantity), can be adopted, but the control means, based on the difference between the set temperature and the measured temperature at the output of the heat source unit,
It is preferable to compare the total amount of heat required by each of the terminals with the capability of the heat source device, from the operational effects described below.

It is more preferable that the terminal having a lower priority is at least one of a bathroom heating dryer, a clothes dryer and a dish dryer.

[0009] Further, when the terminal temporarily stopped operation is scheduled to be operated for a predetermined time, the control means controls the operation time by the time temporarily stopped after the elapse of the predetermined time. It is more preferable to perform the control for extending the length than the operation and effect described below.

According to the above-mentioned feature of the present invention, the control means determines a state in which a plurality of the terminals are used at the same time, and the total amount of heat required by each of the terminals at that time. Then, it is possible to perform a control to temporarily stop the operation of the terminal having a lower priority when the former is larger. As a result, it is possible to output a sufficient amount of heat from the heat source device to a terminal having a higher priority. As a result, even when each terminal is used at the same time and the total amount of consumed heat is large, it is possible to provide a heat supply system that can prevent a decrease in the performance of the terminal with a high priority.

[0011] In the above configuration, when the control means temporarily stops the operation of the terminal having a lower priority and the temperature of another terminal operating becomes higher than a set temperature, the terminal temporarily stops operation. If the control is to resume operation of the terminal, when the temperature of the other terminal that is operating becomes higher than the set temperature, the amount of heat required by that terminal usually decreases at that point, so the terminal that has temporarily stopped operation Even if the operation of the equipment is restarted, the total heat required by each terminal may be lower than the capacity of the heat source equipment.As a result, terminals with lower priorities are temporarily assigned only when the required heat quantity during the initial operation is large. It is only necessary to stop the operation. For this reason, the time of temporary stop of operation can be further reduced.

[0012] When the control means compares the total amount of heat required by each of the terminals with the capability of the heat source unit based on a difference between a set temperature and a measured temperature at an output unit of the heat source unit, The temperature difference between the set temperature of the output unit of the heat source unit and the measured temperature occurs when the calorie of the output of the heat source unit decreases and there is a difference between the total heat amount required by each terminal and the heat amount output by the heat source unit. Therefore, by observing the difference between the set temperature of the output unit of the heat source unit and the measured temperature, it is possible to compare the total amount of heat required by each of the terminals and the capability of the heat source unit, and the set temperature of the output unit. The target control can be performed only by detecting the measured temperature. Therefore, there is no need to provide a detecting element for the amount of heat required by each terminal or a detecting element for the amount of heat output from the heat source device, and it is not necessary to perform a complicated calculation of the amount of heat.

[0013] Further, when the terminal having a low priority is at least one of a bathroom heating dryer, a clothes dryer and a dish dryer, these terminals are not necessarily operated during a time when a plurality of terminals are used. There is no need to perform the operation, and there is little inconvenience even if the operation is temporarily stopped and postponed, so that more advantageous control for the user can be performed.

[0014] In the case where the temporarily stopped terminal is scheduled to be operated for a predetermined time, the control means extends the operation time by a time temporarily stopped after the elapse of the predetermined time. If the control is performed, the timer of the terminal that is scheduled to operate for a predetermined time is counted even during the stoppage of operation, thereby preventing the time actually operated from being shortened and preventing the scheduled time from being increased. Only the actual operation can be performed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a heat supply system according to the present invention will be described.
An embodiment will be described with reference to the drawings. This heat supply
The heating system heats and supplies the heating medium as shown in FIG.
Heat source device NT and a temperature as a heat medium from the heat source device NT.
Multiple terminals where water is circulated through hot water supply channel JU
Machine TA, that is, bathroom heating dryer A, fan convector B
And the floor heating device C, respectively, the heat source unit NT and the front
The start and stop of each operation of each terminal TA,
And manually operated to command other operating conditions
Operation unit NT_S, A_S, B_S, C_SAnd these controls
NT_S, A_S, B_S, C _SOf driving based on the operation information of
Controls to control start and stop and other operating conditions
Gobe NT_H, A_H, B_H, C_HIs provided. Immediately
That is, a heat source unit that heats and supplies a heat medium, and the heat source unit
A plurality of terminals to which the heat medium is supplied, and the heat source devices and terminals
Control means for controlling the operation of the machine.

As will be described later in detail, the bathroom heater / dryer A is provided in the bathroom to heat, dry or ventilate the bathroom. Funcon Vector B is
A heating device of a hot air blowing type, for example, provided in a room such as a bedroom, and blows air heated by a heat exchanger 60 supplied with hot water into a room by a fan 61 to heat the room. It is configured. The floor heating device C is provided, for example, in a living room or the like, and a floor heating heat exchanger 62 composed of a slender pipe for heating is provided on a mat-like rug in a meandering shape to heat the room from the floor surface. Is configured.

Next, the configuration of the heat source unit NT will be described.
The heat source unit NT is provided with a hot water supply unit 20 for supplying hot water to a hot water tap or bathtub 19 and a heat medium supply unit 21 for supplying hot water as a heat medium to each of the terminal devices. . That is, as shown in FIG. 2, a gas-fired hot water supply burner 23 for heating water supplied from the outside, and a hot water supply heat exchanger 24 heated by the hot water supply burner 23 are provided in the hot water supply combustion chamber 22. , A fan 25 for passing the combustion air of the hot water supply burner 23, and the like.
Has a water supply channel 26 that supplies water from outside (such as water supply),
A tapping path 27 for tapping the hot water after heating is connected.
In addition, a bypass 28 for bypass-connecting the water supply channel 26 and the hot water supply channel 27 is provided in a state of branching from the water supply channel 26,
This bypass passage 28 is provided with a bypass valve 29. The water supply path 26 is provided with an input water temperature thermistor 30 for detecting the input water temperature, and a water amount sensor 31 for detecting the amount of water flow, and an outlet temperature thermistor for detecting the outlet temperature of the heat exchanger 24 in the hot water path 27. 32 are provided, and hot water path 2
A hot water temperature thermistor 34 is provided in the hot water supply path 33 on the lower side in the flow direction at the connection point between the bypass 7 and the bypass path 28. A bath hot water supply path 33b is provided so as to branch from the hot water supply path 33 to a general hot water supply path 33a.
b is a bath valve 34, a hopper 35 for preventing backflow, and a check valve 3
6 and the like, and are connected to a circulation path 37 for additional heating of the bath. A reheating circulation pump 38, a water level sensor 39 for detecting the water level of the bathtub 19,
A water flow switch 40 for detecting a flow state by the operation of the additional heating circulation pump 38, a bath thermistor 41 for detecting a bathtub water temperature, and the like are provided. The fuel supply passage 42 for the hot water supply burner 23 has two on-off valves 4 for interrupting the fuel supply.
3 and 44, and a hot water supply gas proportional valve 45 capable of adjusting a fuel supply amount (gas amount).
An igniter that ignites the burner and a frame rod that confirms ignition are provided near the burner 3.

In this manner, the water supplied through the water supply passage 26 is heated by the hot water supply heat exchanger 24 heated by the burner 23, and supplied to the hot water tap through the general hot water supply passage 33a. 33b and circulation path 3 for reheating
It is configured to supply hot water to the bathtub 19 through 7.

Also in the heating combustion chamber 46, similarly to the hot water supply combustion chamber 22, a gas combustion type heating burner 47, and the heating heat exchanger 4 heated by the heating burner 47.
8. Fan 4 for passing the combustion air of heating burner 47
9 and the like, and the fuel supply path 42 for the burner 47 is provided with intermittent valves 43 and 50 for intermitting fuel supply and a heating gas proportional valve 51 capable of adjusting the fuel supply amount (gas amount). Although not shown, an igniter for igniting the burner 47 and a frame rod for confirming the ignition are provided near the burner 47. The on-off valve (source gas valve) 43 on the fuel supply superior side is configured to be shared with the hot water supply burner 23. A heating circulation path 52 is connected to the heating heat exchanger 48. This heating circulation path 52
Is equipped with a heating circulation pump 53 and an expansion tank 54,
The hot water is circulated and supplied to the bathroom heat exchanger 3 and the like in the terminal device TA such as the bathroom heater / dryer A. In the middle of the heating circulation path 52, a bath heat exchanger 55 for exchanging heat with the bath additional heating circulation path 37 and heating the hot water in the additional heating circulation path 37 is provided.
Are connected in parallel, and this heat exchanger 55
Is provided with a bath thermal valve 56.
A heating outlet temperature thermistor 57 for detecting an outlet hot water temperature is provided at an outlet portion of the heating heat exchanger 48 in the heating circulation path 52.

As shown in FIG. 4, the operation unit NT _S for the heat source unit has an operation switch 63 for instructing operation / stop, and
An operation display lamp 64 that is turned on when the operation is started and turned off when the operation is stopped, a temperature setting switch 65 for setting a target hot water supply temperature, a command for automatically filling the bathroom and releasing the filling by operating again. A switch 66, a filling lamp 67 which is turned on when the filling command is issued, and which is turned off when the filling command is released, a filling adjustment dial 68 for setting a target filling amount, a temperature display section 6 for displaying hot water supply temperature and the like.
9 etc. are provided.

[0021] Next will be described hot water supply operation of the control unit NT _H of the heat source apparatus side. Operation switch 63 as hot water supply command unit
After the heat source unit NT is set to the operating state, the hot water tap is opened and water flows, and when the detected value of the water amount sensor 31 exceeds the set value, the hot water supply fan 25 is operated and Each of the intermittent valves 43 and 44 and the gas proportional valve 45 are opened, the hot water supply burner 23 is ignited, and the gas proportional valve 45 is controlled so that the hot water temperature reaches the target hot water supply temperature set by the temperature setting switch 65. . That is, the deviation between the detection value of the incoming water temperature thermistor 30 and the target hot water supply temperature,
The fuel supply amount, that is, the opening degree of the gas proportional valve 45 is controlled by feedforward control based on the detection value (water flow amount) 1 and the like.
The opening degree is feedback-controlled based on the deviation between the detection value of the tapping water temperature thermistor 34 and the target hot water supply temperature, the flow rate, and the like.
In this way, control is performed to supply hot water at the target temperature.

When a hot water switch is instructed by the hot water switch 66, hot water having a target hot water supply temperature is automatically supplied to the bath tub 19, and the water level in the bath tub 19 is equal to the target hot water level. , The hot water supply is stopped, and thereafter, control is performed such that the hot water temperature in the bathtub 19 is maintained at the target hot water supply temperature until the hot water filling command is canceled. That is, the bath valve 34 is opened to start water supply, the bypass valve 29 is opened to increase the amount of hot water supply, and the detection value of the outlet temperature thermistor 32 of the heat exchanger 24 for hot water supply is used for filling the hot water. Feed-forward control of the fuel supply amount is performed so as to reach the target temperature, and feedback control is performed so that the detection value of the tapping temperature thermistor 34 becomes the target hot-water supply temperature. When the water level of the bathtub 19 detected by the water level sensor 39 reaches the set water level, the bath valve 3
4 is closed. Thereafter, the reheating circulation pump 38 is activated at predetermined time intervals, heated by the heat exchanger 55, and when the detection value of the bath thermistor 41 reaches the target hot water supply temperature, the reheating circulation pump 38 is stopped. At this time, if the heating circulation pump 53 is operated and the temperature of the heating outlet temperature thermistor 57 is lower than the set temperature, the heating operation by the heating burner 47 is started, and the bath thermal valve 56 is opened. It will be valved.

Next, the configuration of the bathroom heater / dryer A will be described. As shown in FIG. 3 (a), this bathroom heating / drying machine A includes a main body case 1 having a lower side opened.
A circulating fan for the bathroom, which circulates and vents the air in the bathroom through the circulating ventilation path L1 formed in the compartment and exhausts the air to the outside, a heat exchanger for the bathroom 3 for heating the air passing through the circulating ventilation path L1, and a bathroom A movable damper 4 which is rotatable and switchable between a heating position where the air passed by the circulation fan 2 passes through the bathroom heat exchanger 3 and a ventilation position where the air is exhausted toward the ventilation passage L2. An electric motor 5 for switching operation, a bathroom heat valve 6 for intermittently supplying hot water from the heat source machine NT to the bathroom heat exchanger 3,
A temperature sensor 11 and the like for detecting the temperature of the air passed through the circulation ventilation passage L1 are provided. The ventilation ventilation passage L2 is connected to the outside through an exhaust duct 7, and is located below the main body case 1. A grill plate 8 attached in a state where the opening is closed has an intake portion 9 for sucking air in the bathroom A, and an outlet 10 for blowing air heated by the bathroom heat exchanger 3 into the bathroom. ing. The movable damper 4 is switched to the ventilation position (FIG. 3).
(See (b)), a small amount of air is blown between the free end side and the inner wall of the circulation ventilation passage L1 so that a part of the air ventilated by the circulation fan 2 is exhausted toward the ventilation ventilation passage L2. A gap is formed. Also, the electric motor 5
Are initially set so that the movable damper 4 is at the heating position.

[0024] Further, the operating section A _S of the bathroom heater dryer A, as shown in FIG. 5, the drying switch 70 for commanding the drying operation, cool breeze switch 71 for commanding Suzukaze operation, instructs the heating operation heating Switch 72, ventilation switch 73 for instructing ventilation operation, stop switch 74 for stopping operation,
Time setting switch 75 for setting the timer operation time of each operation, timer display section 76 for displaying the timer operation time
Etc. is provided, bath controller A _H of the heating dryer A side, the operation switch for instructing each operation 70 to 73
Each operation is started based on the operation of
Operation is stopped by the operation of.

More specifically, when the heating switch 72 is operated, a heating operation is executed. That is, while the operation of the circulation fan 2 is started, the bathroom thermal valve 6 is opened, and the air in the bathroom is passed through the circulation ventilation passage L1 and heated by the bathroom heat exchanger 3, The temperature of the bathroom is raised by returning the air from the blowing section 10 to the bathroom, and a part of the air to be ventilated is exhausted toward the ventilation ventilation path L2.
It is configured to perform a heating operation for heating the bathroom, and at that time, a timer time can be set by the time setting switch 75, and the timer time elapses or the stop switch 74 is operated. Then, the circulation fan 2 is stopped, and the bathroom thermal valve 6 is closed to stop the heating operation. still,
During the heating operation, when the detected value of the temperature sensor 11 becomes 50 ° C. or more, the thermal valve 6 is closed to stop the supply of hot water,
When the temperature falls below 0 ° C., the thermal valve 6 is opened to supply hot water, and the temperature is controlled so as to be maintained in the set temperature range.

When the cool air switch 71 is operated, a cool air operation is performed. In other words, only the circulation fan 2 is operated in a state where the movable damper 4 is maintained at the heating position, and the air in the bathroom is circulated and ventilated. When the 74 is operated, the circulation fan 2 is stopped, and the cool air operation is stopped. In the cool air driving, for example, a cool air feeling can be given when taking a bath in summer or the like.

When the ventilation switch 73 is operated, a ventilation operation is performed. That is, after the electric motor 5 is operated so that the movable damper 4 is switched to the ventilation position, the circulation fan 2 is operated, and the air in the bathroom is sucked in from the air suction unit 9 and is externally passed through the ventilation passage L2. It is configured to exhaust to the timer time elapses as described above,
Alternatively, when the stop switch 74 is operated, the circulation fan 2
Is stopped, and the electric motor 5 is operated so that the movable damper 4 is switched to the heating position to stop the ventilation operation. The ventilation operation can be set to a continuous operation without time limit.

In the fan convector B, as shown in FIG. 1, the amount of hot water supplied to the hot water supply path JU for the heat exchanger 60 for heating air is gradually increased.
In a state in which noise and vibration caused by rapid supply of hot water are suppressed, a thermal valve 77 capable of intermittently supplying hot water is provided,
A temperature sensor 78 for detecting the temperature in the room is provided. As shown in FIG. 6, an operation switch 7 for instructing start and stop of operation is provided on the operation unit B _S of the fan control vector B.
9 and a temperature setting dial 80 for setting a target temperature
Is provided, the control unit B _H of Fankon vector B, when the operation starts on the basis of the operation of the operation switch 79 in the operation unit B _S is commanded, with to open the Netsudoben 77,
Start the heating operation by operating the fan 61, the detection value of the temperature sensor 78, the operation unit operating state or fan 61 of Netsudoben 77 so that the set target temperature by B _S
The operation state of the operation switch 7 is configured to be controlled.
9 is configured to stop operation when it is operated again. That is, the thermal valve 77 is closed and the fan 6
1 is stopped.

Similarly, in the floor heating device C, as shown in FIGS. 1 and 7, the hot water supply path JU for the heat exchanger 62 for floor heating is provided with the above-described thermal valve 81. , provided with a temperature sensor 82 for detecting the indoor temperature, the control unit C _H of the floor heating device C, the operation start is commanded based on the operation of the operation switch 83 in the operation unit C _S, the Netsudoben 81 Open the heat exchanger for floor heating 6
2 to supply hot water to start the heating operation, the detection value of the temperature sensor 82, controls the operation state of the operation unit C Temperature in _{the S} setting dial 84 Netsudoben to be set target temperature by 81 The operation switch 83
Is operated again, the thermal valve 81 is closed to stop the floor heating operation.

[0030] Then, the control unit NT _H of the heat source apparatus side,
Each of the control units A _S , B _S , C _S on the terminal TA side is provided so as to be able to communicate with each other via a communication cable K.
When an operation start is instructed in any of the operation units A _S , B _S , and C _S of the three terminal devices TA, the operation is controlled to start the operation of the heat medium supply unit 21 and the three terminal devices are controlled to start operation. When operation stop is commanded in all of the operation units A _S , B _S , and C _S , control is performed to stop the operation of the heat medium supply unit 21.

In the present embodiment, remote command means for selectively instructing the operation unit NT _S of the heat source unit to start and stop operation of each of the three terminals A, B, and C is provided. Each of the control units A _H , B _H , and C _H in each terminal TA is provided with remote command means ES when the terminal to be controlled is selected in the operation unit NT _S on the heat source unit side. Is configured to control the start and stop of the operation of the terminal TA based on the command information. Also,
As shown in FIG. 4, a check switch 85 for checking the operation state of each terminal TA, display means HS for individually displaying the operation state of each terminal TA, and the like are provided. These are usually covered with a lid F (see FIGS. 4A and 4B).

The present embodiment employs the above-described heat supply system.
In the system, the control unit NT_H, A _H, B_H, C_HThan
The configured control means CO controls the plurality of terminals TA to be the same.
When used, the total heat required by each terminal TA
Quantity Q_rIs the capacity of the heat source unit (heat Q_o) Higher
Then, the bathroom heating / drying machine A, which is a terminal having a low priority, is
It has a control to stop the operation occasionally. And
One of the terminal heating / drying units A, which is the terminal having a low priority order,
After a temporary shutdown, the floor warm
When the cell unit C becomes higher than the set temperature, the operation is temporarily stopped.
When the control for restarting the operation of the bathroom heater / dryer A is further performed.
In both cases, the bathroom heater / dryer A operates for a predetermined
After a certain period of time
Extend the operation time by the time of temporary suspension
Perform control. Diagram showing a specific control flowchart
8 and FIG.

The control procedure will be described below with reference to this flowchart. First, it is confirmed that the drying operation of the bathroom heater / dryer A or the off timer operation of the bathroom heating operation is being performed, and that the fan convector B and the floor heating device C are being operated (steps 1 to 3). ). At this time, if all the terminals are not operated within the timer time t _s , the operation is terminated after the lapse of the timer time of the bathroom heater / dryer A (steps 13 and 14).

After confirming the above, it is determined whether or not the total amount of heat required by each of the terminals A to C is higher than the capability of the heat source unit NT (step 4). In the present embodiment, the difference ΔT between the set temperature of the output section of the heat source device NT during use (set to, for example, 80 ° C. on the hardware side) and the measured temperature measured by the outlet temperature thermistor 57 for heating is used. based shows an example of comparing the ability of the total heat Q _r and the heat source unit, wherein each terminal is required (heat quantity Q _o). If it is determined that the terminal has not exceeded the capacity, a normal timer operation is performed (steps 11 and 12), and if it is determined that the terminal has exceeded the capacity, the bathroom heating / drying machine A that is performing the timer operation is performed. Is stopped (step 5).

The operation of the bathroom heater / dryer A is stopped until the temperature of the floor heating device C becomes equal to or higher than the set temperature (step 6), during which the standby time _tw is measured (step 7). When floor heating device C is equal to or greater than the set temperature, bathroom operation of the heating dryer A is resumed (step 8), the operation until the timer time t _s and waiting time t _w has elapsed is continued,
After that time has elapsed, the operation of the bathroom heating / drying machine A is stopped (steps 9 and 10).

According to this embodiment, the control means determines a state in which a plurality of the terminals are used simultaneously,
Judgment of the total amount of heat required by each of the terminals at that time and the capacity of the heat source unit, and when the former is large, temporarily suspending the operation of the terminal with a low priority, and then the other terminals in operation When the temperature of the terminal becomes equal to or higher than the set temperature, control for resuming the operation of the terminal that has been temporarily stopped can be performed. A sufficient amount of heat can be output from the machine. Also, by simply observing the difference between the set temperature of the output unit of the heat source unit and the measured temperature, the desired control can be performed, and the heat amount detection element required by each terminal and the heat amount output by the heat source unit There is no need to provide each element,
There is no need to perform a complicated calculation of the calorific value. In addition, a terminal having a low priority is a bathroom heating / drying machine, and it is not always necessary to drive during a period in which a plurality of terminals are used, and there are few inconveniences even if the operation is temporarily stopped and postponed, It is possible to extend the operation time by the time during which the operation is stopped and to supplement the operation time. As a result, even when each terminal is used at the same time and the total amount of consumed heat is large, it is possible to provide a heat supply system that can prevent a decrease in the performance of the terminal with a high priority.

[Another Embodiment] Hereinafter, another embodiment of the present invention will be described.

(1) In the above embodiment, assuming that the output of the heat source unit will decrease immediately after the terminal is operated, it is determined whether or not the terminal has exceeded the capacity immediately after the operation of the terminal. Although the determination is made (step 4), a certain time may be provided for the measurement waiting time in consideration of a short time from when the terminal device is operated to when the output of the heat source device is reduced. Control may be performed to repeat the measurement at regular intervals until the timer time t _s elapses. According to this configuration, the control of the present invention can be reliably performed even when the output of the heat source device does not decrease immediately after the operation of the terminal device and the output of the heat source device decreases later.

(2) In the above embodiment, control is performed by strictly determining whether or not the terminal has exceeded its capacity (step 4) based on the difference ΔT between the set temperature of the output section of the heat source unit and the measured temperature. In such a case, ΔT exceeds 0 ° C. due to a delicate error such as temperature control, and an erroneous determination may be made.
An erroneous determination may not be made due to a slight error such as temperature control. According to such a configuration, it is difficult for a terminal having a low priority to be temporarily stopped in operation by erroneously determining whether or not the terminal has exceeded its capacity due to a subtle error such as temperature control.

(3) In the above embodiment, once the operation of the bathroom heating / drying machine is resumed (step 8), a control is performed to continue the operation of the bathroom heating / drying machine even if the terminal equipment exceeds its capacity thereafter (step 8). step 9) and the but, as shown in the flow chart of FIG. 10, until the timer time t _s and waiting time t _w has elapsed, monitoring whether the terminal is capable over (step 9,9-1) , The control of stopping the operation of the bathroom heater / dryer A again (step 5) may be performed when the terminal exceeds the capacity.
According to such a configuration, after restarting the operation of the bathroom heating / drying machine,
Even when the terminal exceeds the capacity again, the operation of the bathroom heater / dryer is stopped again, and a sufficient amount of heat can be output from the heat source device to the terminal having a higher priority.

(4) In the above embodiment, when the control means temporarily stops the operation of the terminal having a lower priority and the other terminal (floor heating device) being operated becomes higher than the set temperature,
Although the example of performing the control of restarting the operation of the terminal that has been temporarily stopped has been described, as described above, the operation is performed when the total amount of heat required by each terminal during operation is lower than the capacity of the heat source device. A method of resuming the operation, a method of resuming the operation after a fixed period of time has elapsed, and the like, and a control combining these methods are also possible.

(5) In the above embodiment, the control unit is provided in each terminal unit. However, the control unit may be provided only in the heat source unit, and the terminal unit may be collectively controlled by two-way communication.

(6) In the above embodiment, the terminal
Bathroom heating dryers, fan convectors, floor heating devices are exemplified, but are not limited to such, further, dishwashers,
Various terminals such as a dish dryer and a clothes dryer can also be used. In that case, it is preferable to control at least one of the bathroom heating dryer, the clothes dryer and the dish dryer as a terminal having a low priority.

(7) In the above embodiment, an example of a two-can, three-water heat supply system as shown in FIG. 2 has been described. However, a configuration in which a hot water supply side system does not exist may be employed. And the hot water supply system have a common burner 1
The present invention is also applicable to a can-type three-water heat supply system. In the case of a one-can, three-water heat supply system, the hot water supply system is regarded as a terminal and the amount of heat required is compared. The total amount of heat required by each terminal and the capability of the heat source unit are compared. What is necessary is just to perform the control which stops operation | movement of the terminal of a low priority temporarily.

(8) In the above embodiment, hot water is used as the heat medium, but a heat medium containing a chemical substance exclusively for heat exchange may be used instead of hot water.

[0046] (9) In the above embodiment, the operation unit NT _S of the heat source machine, but the remote command means for commanding the operation start and stop of each of the terminals and the heat source unit has a configuration provided, such a remote commander It is also possible to simplify the apparatus by adopting a configuration in which there is no means.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a heat supply system.

FIG. 2 is a schematic configuration diagram of a heat source unit.

FIG. 3 is a schematic configuration diagram of a bathroom heating / drying machine.

FIG. 4 is a front view of an operation unit of the heat source unit.

FIG. 5 is a front view of an operation unit of the bathroom heating / drying machine.

FIG. 6 is a front view of an operation unit of the fan convector.

FIG. 7 is a front view of an operation unit of the floor heating device.

FIG. 8 is a control flowchart according to the embodiment of the present invention.

FIG. 9 is a control flowchart according to the embodiment of the present invention.

FIG. 10 is a control flowchart of another embodiment of the present invention.

[Explanation of symbols]

 NT heat source equipment TA terminal equipment CO control means

Claims (5)

[Claims] 1. A heat source device for heating and supplying a heat medium, a plurality of terminals to which the heat medium is supplied from the heat source device, and control means for controlling the operation of the heat source device and the terminals are provided. The heat supply system, wherein the control means, when a plurality of the terminals are used at the same time, if the total amount of heat required by each of the terminals is higher than the capability of the heat source device, the priority is low A heat supply system having control for temporarily stopping operation of a terminal. 2. The control unit, after temporarily stopping the terminal having a low priority, when the other terminal being operated has a temperature equal to or higher than a set temperature, the terminal temporarily stopped the terminal. The control for restarting the operation is further performed.
A heat supply system as described. 3. The control means compares the total amount of heat required by each terminal with the capability of the heat source device based on a difference between a set temperature and a measured temperature at an output section of the heat source device. Item 3. The heat supply system according to item 1 or 2. 4. The heat supply system according to claim 1, wherein the terminal having a lower priority is at least one of a bathroom heating dryer, a clothes dryer, and a dish dryer. 5. The method according to claim 1, wherein when the terminal temporarily stopped operation is scheduled to operate for a predetermined time, the control unit controls the operation time only for a time period temporarily stopped after the elapse of the predetermined time. The heat supply system according to any one of claims 1 to 4, wherein the heat supply system performs control for extending the heat supply.