JPH10103682A - Heat supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat supply system capable of making up capability deterioration of each terminal even when each terminal is used simultaneously and hence the total amount of heat consumption is large by prolonging operation time in response to the capacity deterioration of each terminal. SOLUTION: A heat supply system includes a heat source machine for heating a heat medium and supplying it, a plurality of terminals to which the heating medium from the heat source machine, and control means for controlling the operations of the heat source machine and the terminals. In the system, the control means calculates a difference between a total heat amount required by each terminal during the time interval the plurality of the terminals are simultaneously used and a heat amount outputted from the heat source machine, and prolongs operation times of the terminals in which operation for a predetermined time is scheduled based upon the heat amount difference after the elapse of the use time interval.

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 performance of each terminal decreases, and the terminal completes drying by operating for a predetermined period of time, such as a bathroom heater / dryer. In some cases, a situation in which the purpose (drying) cannot be achieved within a certain time may occur. Similarly, in the case of the bathroom pre-heater, the bathroom is not sufficiently warmed at the time of bathing, and the bather may feel discomfort contrary to the expectations of the bather. 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 extend the operation time in accordance with a decrease in the performance of each terminal, even when each terminal is used at the same time and the total heat consumption is large. Accordingly, an object of the present invention is to provide a heat supply system capable of complementing the heat supply system.

[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 units and the terminals, the control unit is configured such that, when a plurality of the terminals are used at the same time, each of the terminals during the use period is A control that calculates a difference between the total amount of heat requested and the amount of heat output by the heat source device, and based on the difference in the amount of heat after the use period elapses, extends the operation time of the terminal that is scheduled to operate for a predetermined time. In that it has

As a method of calculating the difference between the total amount of heat required by each of the terminals and the amount of heat output from the heat source unit during the use period, the amount of heat required by each of the terminals is calculated to calculate the total amount of heat. Any of various methods, such as a method of calculating a difference between the amount of heat output by the heat source unit and the like, can be adopted.However, the control unit controls the difference between the set temperature of the output unit of the heat source unit and the measured temperature during the use period. Therefore, it is more preferable to calculate the difference between the total amount of heat required by each of the terminals and the amount of heat output by the heat source device, from the operational effects described later.

[0007] Examples of the terminal that is scheduled to operate for a predetermined time include various terminals that perform a cut-off timer operation. Among the terminals, a bathroom heating dryer, a clothes dryer, and a dish dryer are included. More than one type is more preferable than the function 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 determines the total number of the terminals required during the period of use. The difference between the amount of heat and the amount of heat output by the heat source device can be calculated. Then, after the elapse of the use period, control for extending the operation time of the terminal scheduled to operate for a predetermined time can be performed based on the heat amount difference.

As a result, even when each terminal is used at the same time and the total amount of consumed heat is large, a heat supply system capable of complementing the operation can be provided by extending the operation time in accordance with the deterioration of the capability of each terminal. We were able to.

The control means calculates a difference between the total amount of heat required by each of the terminals and the amount of heat output by the heat source unit from a difference between a set temperature of the output unit of the heat source unit and a measured temperature during the use period. If it is, the amount of decrease in the calorific value of the output of the heat source unit corresponding to the difference between the set temperature of the output unit of the heat source unit and the measured temperature is actually supplied to the terminal with the total amount of heat required by each terminal. Since the amount of heat actually supplied is almost equal to the amount of heat output by the heat source unit, the difference between the set temperature of the output unit of the heat source unit and the measured temperature indicates the total amount of heat required by each terminal. The difference between the amount of heat output from the heat source unit can be calculated, and the target control can be performed only by detecting the set temperature of the output unit and the measured temperature.
Therefore, there is no need to provide a heating element for detecting the amount of heat required by each terminal device or a heating element for outputting the heat amount from the heat source unit.
Also, there is no need to perform a complicated calculation of the total heat amount.

When the terminal scheduled to operate for a predetermined time is at least one of a bathroom heating dryer, a clothes dryer and a dish dryer, these terminals have a certain amount of heat due to the operation for a predetermined time. The purpose of this is to achieve the purpose by supplying the same, and there is no particular problem in using it even if the operation time is extended. It can be performed.

[0012]

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 to supply hot water to the hot water tap through the general hot water supply passage 33a and to supply the hot water to the bath hot water supply passage. 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 and 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.

[0018] 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 corresponds 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.

[0021] Also, the the operation unit 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 performed. 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 executed. 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 apparatus C, as shown in FIGS. 1 and 7, the hot water supply path JU for the floor heat exchanger 62 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.

And a control unit NT _H on the heat source device 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 this 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, 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).

In the present embodiment, the heat supply system as described above is used.
In the system, the control unit NT_H, A _H, B_H, C_HThan
The configured control means is such that a plurality of the terminal devices TA
When used, each terminal T during its use period
Total heat required by A Q_rAnd the heat output by the heat source unit NT
Quantity Q_oIs calculated, and after the elapse of the use period,
The operation for a predetermined time is scheduled based on the heat amount difference ΔQ.
Extend the operating time of the bathroom heater / dryer A
It has control.

FIG. 8 shows a specific control flow chart. In this embodiment, the set temperature of the output section of the heat source unit during the use period (set to, for example, 80 ° C. on the hardware side). And heating outlet temperature thermistor 57
In the difference ΔT measured by measuring temperature, shows an example of calculating the difference ΔQ between the heat Q _o of the total amount of heat Q _r and the heat source unit has output said each terminal is required. Also, an example is shown in which the terminal scheduled to operate for a predetermined time is the bathroom heating / drying machine A, and the drying operation is set by an off timer.

Hereinafter, the control procedure will be described with reference to this flowchart. First, it is confirmed that the off-timer operation of the bathroom heater / dryer A is being performed and that the operation of other terminals (for example, the fan convector B, the floor heating device C, etc.) is being performed (steps 1 and 2). 2). At this time, if no other terminal is operated within the timer time t _s , the operation ends after the timer time of the bathroom heating / drying machine A elapses (steps 6 and 7).

[0032] After confirming the above, and the total amount of heat dQ _r of each of the terminals per unit time is required, by comparing the amount of heat dQ _o the heat source unit has output per unit time, dQ _r is large than dQ _o we are integrating the difference of dQ _r and dQ _o at each time if there is, this is either a dQ _r ≦ dQ _o, continued until the elapsed time of the timer t _s, and calculates the difference ΔQ of the amount of heat (step 3 5). In this case, comparison of dQ _r and dQ _o is the ΔT at each time - can be determined by (set temperature measurement temperature), it can be determined when ΔT exceeds 0 ℃ and dQ _r> dQ _o. Then, the heat amount difference corresponding to ΔT at each time can be obtained from the flow rate of the output of the heat source device, the heat capacity, and the like, and by integrating these over time, the heat amount difference ΔQ can be calculated.

Whether dQ _r ≤dQ _o or the timer time t _s
If is has elapsed, based on ΔQ obtained by integrating far, and calculates the extra time t _p of a timer for compensating for the heat differential (Step 8). At this time, basically, the integrated Δ
Corresponding to the Q bathroom heater dryer A calculates the heat differential of minutes decreased capacity may be calculated extra time t _p on the basis of the heat differential. The calculation may be based on the maximum value of the capacity of the bathroom heater / dryer A, and if another terminal is used at that time, taking into account the decrease in capacity,
Extra time t _p may be calculated as a fixed value, but in this embodiment, is performed integrated with continued change in t _p the control of ΔQ until the lapse of t _s + t _p time (step 9). That is, after the t _s is also another terminal is used, or followed by the state of dQ _r> dQ _o, new when it comes to such a state, the value of ΔQ fluctuation through step 3-5 by, t _p is further increased, decreased or continuous ability of continuous use another terminal, the reduction of intermittent ability of intermittent use, further control to calculate the t _s + t _p in consideration Is adopted.

In the above description, by setting ΔQ = 0 as an initial value, t _p = 0 is set when the output of the heat source unit does not decrease due to the small amount of heat consumed even when the terminal is operated. The calculated timer operation is performed based on the time t _s (steps 3, 8, 9, and 10). Also, even when the terminal is operated and its heat consumption is large,
There is a case where initially generated output decreased to not occur reduction in the output of the heat source machine is delayed, even in this case, monitoring the reduction in the output of the heat source device until the lapse of t _s + t _p times, the output reduction occurs ΔQ Can be started (steps 3, 8, 9).

In the above, the extension time t of the timer
_Although the calculation of _p may be strictly calculated from ΔQ as described above, ΔQ is obtained as a relative value of the decrease in the output of the heat source unit, and the relative value is a relative value Rq of the decrease in the capacity of the bathroom heating / drying unit A.
[-] as equivalent to, it may be calculated t _p by the following equation. (Relative value of capacity decrease _{Rq) × (t s + t} p) = constant value t _s

According to this embodiment, the control means determines a state in which a plurality of the terminals are used simultaneously,
It is possible to calculate the difference between the total amount of heat required by each of the terminals during the period of use and the amount of heat output by the heat source device. Then, after the elapse of the use period, control is performed to extend the operation time of the terminal, which is scheduled to operate for a predetermined time, based on the heat amount difference. At this time, a decrease in the amount of heat of the heat source device corresponding to the difference between the set temperature of the output unit of the heat source device and the measured temperature is the difference between the total amount of heat required by each terminal and the amount of heat actually supplied to the terminal. Correspondingly, since the amount of heat actually supplied is almost equal to the amount of heat output from the heat source unit, the difference between the set temperature of the output unit of the heat source unit and the measured temperature indicates the total amount of heat required by each terminal unit and the output of the heat source unit. It is possible to calculate the difference between the calculated heat quantity and the target control can be performed only by detecting the set temperature and the measured temperature of the output unit. 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 particularly calculate the total amount of heat. In addition, the terminal that is scheduled to operate for a predetermined time is a bathroom heating / drying machine, and in particular, supplies a certain amount of heat by driving for a predetermined time to achieve a purpose. Since there is no particular problem in use, even if the capability of the terminal device is reduced, the operation time can be extended without any problem by extending 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 capable of complementing the operation by extending the operation time in accordance with the reduction in the capacity of each terminal. did it.

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

(1) In the above embodiment, assuming a case where the output of the heat source device does not drop at the beginning and the output drop occurs later, the heat source device is operated until the time t _s + t _p elapses. Is monitored, and when the output drops, ΔQ
(Steps 3, 8, and 9). However, if the output of the heat source device does not initially decrease even if the terminal device is operated, a normal timer operation may be performed. Good. In such a case, a step of determining the output reduction corresponding to step 3 is provided immediately after step 2, and when it is determined that the output does not decrease, a normal timer operation as in steps 6 and 7 may be performed. . Further, the output reduction may be determined continuously during the timer operation so as to cope with a case where the output is reduced due to the operation of another terminal at that time (see FIG. 9).

(2) In the above embodiment, dQ _r > dQ _o
If the determination has been configured to control performed strictly (Step 3), in which case, it is performed the integration of ΔQ by subtle error of temperature control and the like, to rather increase the error of the calculated value of t _p since there is, to be smaller than the threshold value of dQ _r judgment, may be is not performed integration of ΔQ by subtle error of temperature control and the like. In this case, the determination may be made based on whether the ΔT in the above embodiment exceeds a threshold temperature set at several degrees Celsius. According to the above configuration, a subtle error of temperature control and the like, error of the calculated value of t _p can be prevented from increasing.

(3) 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.

(4) In the above embodiment, as 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 this case, it is preferable to control at least one of the bathroom heating dryer, the clothes dryer and the dish dryer as a terminal that is scheduled to operate for a predetermined time. Note that, in the above embodiment, an example in which the timer operation of the drying function of the bathroom heating dryer is controlled is described, but the timer operation of the bathroom heating function may be controlled.

(5) 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 required amount of heat is calculated by regarding the hot water supply system as a terminal, and the difference between the total amount of heat required by each terminal and the amount of heat output by the heat source unit is calculated. The control for extending the operation time of the terminal that is scheduled to operate for a predetermined time may be performed based on the heat amount difference.

(6) 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. (7) 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, there is such a remote command means It is also possible to simplify the apparatus by adopting a configuration that does not require it.

[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 another embodiment of the present invention.

[Explanation of symbols]

 NT heat source equipment TA terminal equipment CO control means

Claims (3)

[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, when a plurality of the terminals are used at the same time, the difference between the total amount of heat required by each of the terminals during the period of use and the amount of heat output by the heat source device. And a control for extending the operation time of the terminal scheduled to operate for a predetermined time based on the difference in the amount of heat after the use period has elapsed. 2. The method according to claim 1, wherein the control unit determines a difference between a total amount of heat required by each of the terminals and a heat amount output from the heat source unit based on a difference between a set temperature of the output unit of the heat source unit and a measured temperature during the use period. The heat supply system according to claim 1, wherein the following formula is calculated. 3. The heat supply system according to claim 1, wherein the terminal that is scheduled to operate for a predetermined time is at least one of a bathroom heating dryer, a clothes dryer, and a dish dryer.