JP2016142466A - Heat source device and heating system with heat source device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat source device and a heating system capable of appropriately supplying heat medium to a plurality of heater devices and saving energy.SOLUTION: A heating circuit is arranged with one or a plurality of thermal dynamic valves in side-by-side relation for controlling a presence or no presence of supply of thermal medium to heater devices and a plurality of heater devices can be connected to at least one of them. When the thermal medium is supplied from a heating circuit to the heater device during a period from a stopped time of hot water supplying operation to an elapsing of setting time, the thermal dynamic valve connected to a corresponding heater device is opened and a driving and a stopping of a liquid circulation pump 6 are carried out under a set interval. When the liquid circulation pump 6 is stopped, the liquid circulation pump 6 is driven in trial base under a predetermined timing for detection of operation of the heater device, it becomes possible to recognize on the basis of a load value for pump driving at that time, for example, that a plurality of heater devices are connected to the opened thermal dynamic valve and the number of operating heater devices among the heater devices is increased. The liquid circulation pump 6 is driven continuously or intermittently from the time of recognition.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a heat source device capable of supplying a heat medium for heating to a heating device such as floor heating, and a heating system using the heat source device.

  Conventionally, for example, a heating medium is supplied from a heat source device to a radiant heating device such as floor heating, and the heat of the heat medium is radiated from the heating device, whereby the air in the space in which the heating device is disposed A heating system having a function of warming is used (see, for example, Patent Documents 1 to 3), and FIG. 4 shows a system configuration example of the heating system.

  In the figure, combustion chambers 24 and 25 are provided in an appliance case 42 of the heat source device 1. In the combustion chamber 24, a heating heat exchanger 28 (28 a and 28 b) and a heating burner device 16 are provided. And a combustion fan 18 for supplying and exhausting combustion of the heating burner device 16 is provided. The heating burner device 16 is a burner device that heats the liquid passing through the heating heat exchanger 28 by heating the heating heat exchanger 28.

  Further, in the combustion chamber 25, a hot water supply burner device 17, a hot water supply heat exchanger 29 (29a, 29b) heated by the hot water supply burner device 17, and a combustion fan 19 for supplying and exhausting combustion of the hot water supply burner device 17 are provided. Is provided. The heat exchangers 28b and 29b are main heat exchangers that recover sensible heat in the exhaust gas (combustion gas), and the heat exchangers 28a and 29a are heat exchangers for recovering latent heat that recover latent heat in the exhaust gas. is there. As is well known, the latent heat recovery heat exchanger also recovers sensible heat in the exhaust gas. These heat exchangers 28a and 29a are respectively provided on the upstream side of the flow of the heat medium passing through the heat exchanger, rather than the heat exchangers 28b and 29b.

  Since drain is generated in the latent heat recovery heat exchanger, a drain recovery means (drain receiver) 139 is provided below the heat exchangers 28a and 29a, and the drain recovered by the drain recovery means 139 After being introduced into the drain neutralizer 76 through the discharge passage 75 and neutralized by the drain neutralizer 76, the outside of the heat source device 1 (the tip of the drain discharge passage 77 is connected through the drain discharge passage 77. Led to drain outlet).

  Gas pipes 31 and 32 for supplying fuel to the burner devices 16 and 17 are connected to the heating burner device 16 and the hot water supply burner device 17. The gas pipes 31 and 32 are branched from the gas pipe 30, and the original electromagnetic valve 80 is provided in the gas pipe 30. The hot water supply burner device 17 and the heating burner device 16 each have a plurality of combustion surfaces, and the amount of fuel supplied to each combustion surface of the heating burner device 16 is a proportional valve provided in the gas pipe 31. The amount of fuel supplied to each combustion surface of the hot water supply burner device 17 is adjusted by the valve opening amount 86 and the opening / closing control (fuel supply and stop) of the electromagnetic valves 81 and 82, and is proportional to the gas pipe 32. It is adjusted by the valve opening amount of the valve 87 and the opening / closing control (fuel supply and stop) of the electromagnetic valves 83, 84, 85.

  A water supply passage 88 is provided on the inlet side of the hot water supply heat exchanger 29a. The water supply passage 88 includes flow rate detection means 73 for detecting the amount of hot water by detecting the amount of hot water flowing through the water supply passage 88. An incoming water temperature sensor 74 for detecting the incoming water temperature and a water amount servo 78 for changing the hot water supply flow rate are provided. Further, the liquid circulation passage 5 is connected to the water supply passage 88 through the connection passage 57 and the makeup water electromagnetic valve 46. A hot water supply passage 26 is provided on the outlet side of the hot water supply heat exchanger 29b, and the leading end side of the hot water supply passage 26 is led to an appropriate hot water supply destination.

  Further, a bypass passage 70 for connecting the hot water supply passage 26 and the water supply passage 88 without the hot water supply exchanger 29 is provided, and a bypass servo as a bypass flow valve is provided at a connection portion of the bypass passage 70 with the water supply passage 88. 58 is provided. The hot water supply passage 26 is provided with a hot water temperature detection sensor 113 on the downstream side of the formation portion of the bypass passage 70, and a heat exchange side temperature detection sensor 114 is provided on the hot water supply heat exchanger 29 side.

  The heating heat exchanger 28 (28a, 28b) is provided in a liquid circulation passage 5 including a cistern tank 100 and a liquid circulation pump 6 for circulating a liquid heat medium. The vessel 28 (28a, 28b) has a function of heating the heat medium circulated by driving the liquid circulation pump 6. A part of the cistern tank 100 is open to the atmosphere, and a liquid overflow passage 53 overflowing from the cistern tank 100 due to, for example, volume expansion of the liquid is connected to the cistern tank 100. The leading end is led to the outside of the heat source device 1 (such as a drain port).

  The liquid circulation passage 5 is provided outside the appliance case 42 and a heating circuit having pipes 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 provided in the appliance case 42. The external passages 40, 41, 44, 45, and 59 are provided, and a low-temperature capability switching thermal valve 47 is provided in the pipeline 98. A pipe line 92 connected to the pipe line 98 is provided on the outlet side of the heating heat exchanger 28b, and the pipe line 92 detects the temperature of the liquid led out through the heating heat exchanger 28b. A heating high temperature thermistor 33 is provided. In addition, a heating low temperature thermistor 36 that detects the temperature of the liquid introduced into the heating heat exchanger 28b is provided in the inlet line 91 of the heating heat exchanger 28b.

  The heat source device 1 is connected to a bathtub 27 via a recirculation circuit 13 having an outgoing pipe 14 and a return pipe 15, and the recirculation circuit 13 is connected to the liquid via a heat exchanger 7. It is thermally connected to the circulation passage 5. The heat exchanger 7 is a bath-water reheating heat exchanger formed by a liquid-liquid heat exchanger between the recirculation circuit 13 and the pipe 89 of the liquid circulation path 5. 7 is provided with a flow control valve 38 on the inlet side. The reheating circulation path 13 is provided with a bathtub hot water circulation pump 20 that circulates bathtub hot water. The heat exchanger 7 circulates in the recirculation circulation path 13 by driving the bathtub hot water circulation pump 20 and passes through the liquid circulation path 5. The bath water is heated by heat exchange with the (circulating) liquid.

  Further, in the reheating circuit 13, a bath temperature sensor 21 that detects the temperature of the bath water, a water level sensor 22 that detects the water level of the bath water, and a bath water flow switch 34 that detects the water flow in the reheating circuit 13. Is provided. One end side of the return pipe 15 is connected to the suction port side of the bathtub hot water circulation pump 20, and the other end side of the return pipe 15 is connected to the bathtub 27 via the circulation fitting 56. One end side of the outgoing pipe 14 is connected to the discharge port side of the bathtub hot water circulation pump 20, and the other end side of the outgoing pipe 14 is connected to the bathtub 27 via a circulation fitting 56.

  A pouring water unit 55 is connected to the hot water supply passage 26 via a pipe 54 on the downstream side of the formation portion of the branch passage 70 and the arrangement portion of the hot water temperature detection sensor 113. Is connected to one end side of the bath pouring introduction passage 23, and the other end side of the bath pouring introduction passage 23 is connected to the bathtub hot water circulation pump 20. The hot water unit 55 is provided with a hot water solenoid valve 48, a hot water sensor 49, and check valves 50a and 50b. Note that the hot water supply heat exchanger 29, the hot water supply passage 26 and the pipe 54, the hot water supply unit 55, the hot water introduction passage 23 for the bath, the hot water circulating pump 20 for the bath, the heat exchanger 7 and the outgoing pipe 14 are sequentially passed to the bathtub 27. A hot water filling water passage for performing hot water filling and water pouring is constituted by the passages leading up to.

  In the heat source device 1 as shown in FIG. 4, for example, a user of the heat source device 1 supplies hot water while the operation of the remote control device (not shown in FIG. 4) connected to the heat source device 1 is on. When a hot water tap (not shown) provided at the front end side of the passage 26 is opened, water introduced from the water supply passage 88 is introduced into the hot water supply passage 26 through the hot water supply heat exchangers 29a and 29b, and the flow rate When the detected flow rate detected by the detection means 73 reaches a predetermined hot water supply operating flow rate, a control device (for example, a combustion control of the hot water supply burner device 17 and a rotation control of the combustion fans 18 and 19 are provided in the heat source device 1). (Not shown in FIG. 4), hot water having a preset hot water temperature set in the remote controller is formed and supplied to the hot water supply destination.

  When an automatic switch provided in the remote control device is turned on, hot water having a preset hot water temperature set in the remote control device is formed in the same manner as in the hot water supply operation, and the hot water is supplied to the pouring water unit 55. When the hot water filling solenoid valve 48 is opened, hot water filling is performed from the hot water supply passage 26 to the bathtub 27 through the pouring passage.

  Further, in the heating system shown in FIG. 4, the liquid heat medium (for example, hot water) in the liquid circulation passage 5 is circulated by driving the liquid circulation pump 6 and connected to the liquid circulation passage 5 as necessary. Supplied to one or more of the heating devices. The heating medium circulating in the heating device is appropriately heated by the combustion control of the heating burner device 16 and the rotation control of the combustion fans 18 and 19 by the control device, and the drive control of the liquid circulation pump 6 is also performed. This is done by the control device.

  In FIG. 4, a high-temperature heating device 106 such as a bathroom heater and a hot water mat 10 (10 a, 10 b) are connected to the liquid circulation passage 5, and the hot water mat 10 is provided in the liquid branching unit 37. The thermal circulation valve 2 is connected to the discharge-side passage 90 of the liquid circulation pump 6. The thermal valve 2 functions as a heat medium supply control valve that controls whether or not the heat medium is supplied to the heating device (in this figure, the high temperature heating device 106 and the hot water mat 10 (10a, 10b)).

  In FIG. 4, dots are written in a passage for supplying a heat medium to the high temperature heating device 106 and the hot water mat 10 (10a, 10b), and the high temperature heating device 106 is indicated by an arrow A in FIG. As described above, the heat medium heated by the heating heat exchanger 28b (for example, 80 ° C. hot water) is supplied through the pipes 92, 97, and 40 in order, and the supplied heat medium is supplied to the high-temperature heating device 106. It passes through the internal passage 51 and is introduced into the connecting means 115 through the pipe 41.

  The high temperature heating device 106 is provided with a thermal valve 12, and when the thermal valve 12 is opened in response to an operation on operation of a remote control device connected to the high temperature heating device 106 as a signal, for example, As described above, the heat medium is passed through the high-temperature heating device 106. The heat medium that has passed through the high-temperature heating device 106 is introduced into the connection means 115 through the conduit 41 and returns to the heat source device 1 through the conduit 59.

  In this state, when the reheating operation of the bathtub hot water is also performed, the liquid (heat medium) that has passed through the pipe 92 is passed through the pipe 97 as indicated by the arrow B in the figure, and the flow control valve 38 is used. As shown by the arrow B ′, the liquid that has flowed to the pipe 89 side (heat exchanger 7 side) is returned to the pipe 95 through the pipe 96, as shown by the arrow B ′. The bathtub hot water circulation pump 20 is driven to circulate the bathtub hot water as indicated by an arrow H in the figure, and follow the liquid passing through the liquid circulation passage 5 via the heat exchanger 7 (liquid-liquid heat exchanger). The bath hot water reheating operation is performed until the temperature of the hot water in the bathtub 27 (detected temperature of the bath temperature sensor 21) becomes the bath set temperature by heat exchange with the bathtub hot water passing through the water circulation circuit 13.

  On the other hand, when only the reheating operation of the bath water is performed without performing the heating operation of the high-temperature heating device 106, the heating valve 12 of the high-temperature heating device 106 is closed, so that the heating heat exchanger 28b is heated. After a liquid having a high set temperature (for example, a liquid at 80 ° C.) passes through the pipe line 92 as shown by an arrow A, it does not pass through the pipe line 97 but as shown by an arrow B ′ in the figure. Pass through the 89 side. In the same manner as described above, this liquid and the hot water in the bathtub are subjected to heat exchange through the liquid-liquid heat exchanger 7 so that the hot water in the bathtub 27 is replenished.

  In the hot water mat 10, the heat medium heated by the heating heat exchanger 28 a is passed through the conduit 94 as shown by the arrow D in FIG. 4, then through the cistern tank 100, and is shown by the arrow E in the figure. Then, the liquid is discharged from the liquid circulation pump 6 through the pipe 93 and supplied through the pipes 90 and 44 in order. Note that the heat medium led out from the heating heat exchanger 28 b side is introduced into the pipe line 94 from the pipe line 92 side through the pipe line 99, and the combined heat medium is introduced into the systern 100. Further, by opening the low-temperature capacity switching thermal valve 47 as necessary, the heat medium is also introduced from the pipe line 92 side to the pipe line 94 side through the pipe line 98 and is introduced into the cistern 100. The

  As a result, the temperature in the cistern 100 is set to, for example, about 60 ° C., and the low temperature capacity switching thermal valve 47 is opened as needed when the low temperature heating apparatus such as the hot water mat 10 is operated. When the low-temperature capacity switching thermal valve 47 is closed, no heat medium is introduced from the pipe line 92 side to the pipe line 94 side through the pipe line 98, but the pipe line through the pipe line 99 is not used. The heat medium is introduced from the 92 side to the pipe line 94 side, and the combustion of the heating burner device 16 can be started if the flow rate of the heat medium is detected.

  The supply of the heat medium to the hot water mat 10 is performed by heat corresponding to the hot water mat 10 (10a, 10b) that is operated (operated) among the thermal valves 2 provided in the liquid branching means 37 in the instrument case 42. The valve 2 (for example, 2a, 2b) is performed by being opened in response to the operation-on operation of the remote control device that is signal-connected to the hot water mat 10, for example. When heating the hot water mat 10 without heating the high-temperature heating device 106 or reheating the bathtub hot water, for example, 80 ° C. during the hot dash operation performed until the inside of the pipe is heated, for example, 60 ° C. otherwise. ℃.

  In addition, the passage on the discharge side of the liquid circulation pump 6 is branched and connected to the pipe line 91 leading to the heating heat exchanger 28b side in addition to the pipe line 90 for supplying the heat medium to the hot water mat 10 side as described above. The heat medium passing through the conduit 91 is introduced to the heating heat exchanger 28b side as indicated by an arrow F in the figure. Further, the heat medium supplied to the hot water mat 10 as described above passes through the internal passage 52 of the hot water mat 10, is introduced into the connection means 115 through the pipe 45, and passes through the pipe 59 to the heat source device 1. Return to the side.

  In FIG. 4, the number of heat valves 2 provided in the heat source device 1 is six. However, the number of heat valves 2 differs depending on the heat source device 1, and currently used heat sources. In the apparatus 1, the number of the thermally operated valves 2 is, for example, six or three.

  On the other hand, for example, when the hot water mat 10 for floor heating is provided under the floor of the living room, the number of hot water mats 10 is usually provided as many as necessary when building a house. Since there may be more than the number of two, in consideration of such a case, at least one of the plurality of thermal valves 2 can connect a plurality of heating devices to one thermal valve 2. There is a heat source device being formed.

  For example, FIG. 5A schematically illustrates an example in which a plurality of (for example, two) hot water mats 10 (10a, 10c) are connected in parallel to one thermal valve 2 (here, the thermal valve 2a). Is shown in Each of the hot water mats 10 (10a, 10c) is provided with a valve 39, and the valve 39 is a heat medium introduction operation for manually operating whether or not the heat medium (warm water) is introduced into the hot water mat 10 from the heating circuit. Functions as a means.

  In such a connection form of the hot water mats 10a and 10c, when at least one of the hot water mats 10 is in an operating state, a heat medium (hot water) is sent from the heat source device 1 to the hot water mat 10 (10a, 10c). When heating by the mat 10c is unnecessary, the valve 39 of the hot water mat 10c is closed. Then, even if the thermal valve 2a is opened and the heat medium is supplied from the heat source device 1 to the hot water mat 10a, 10c side, the hot water does not flow to the hot water mat 10c side. Therefore, of the two hot water mats 10a, 10c, Hot water can be supplied only to the hot water mat (hot water mat 10a) on one side, and conversely, when heating by the hot water mat 10a is unnecessary, the warm water mat 10c can be provided by closing the valve 39 of the previous hot water mat 10a. Only hot water can be supplied.

  For example, the floor water is heated in a room in which the hot water mat 10a is disposed by radiating heat from one hot water mat 10a, and the hot water mat 10c is disposed by not introducing warm water into the other hot water mat 10c. By avoiding floor heating in a room, or conversely, by heating the room where the hot water mat 10c is disposed by radiating heat from the hot water mat 10c, by not introducing hot water into the hot water mat 10a In the room where the hot water mat 10a is disposed, it is possible to prevent floor heating.

  For example, when building a house when the first child is born, a plurality of rooms are prepared assuming that a plurality of children are born, and a hot water mat is arranged under the floor of each room. However, there are times when only one child room is used because the second child is not born. In some cases, even when a plurality of children are born, only one child's room is used when the child is small, and another room is used after the child becomes large. In such a case, floor heating in a child room that is not used is unnecessary for a long time. Therefore, by performing the above-described control, waste of energy due to floor heating in an unnecessary room is eliminated. It can be omitted.

  In addition to the hot water mat 10 for floor heating, for example, a heating device such as a panel heater having a panel through which hot water is passed may be installed in a small space such as a toilet or a washroom or a child's room. Similarly in this case, for example, as shown in FIG. 5B, by connecting a plurality of (for example, three) panel heaters 43 or the like to one thermal valve 2 (here, the thermal valve 2f), Even when the number of heating devices that the user wants to use is larger than the number of thermal valves 2, it is possible to cope with this, and by performing the same control, it is possible to suppress the generation of energy waste.

  In addition, even when the temperature of the heat medium supplied to the panel heater 43 or the like from the heating circuit is high by performing an operation such as adjusting the valve opening by using the valve 39 as a valve with a thermostat, the panel heater 43 Can be adjusted to a desired temperature, for example, from about 10 ° C. to about 28 ° C. In such a case, for example, in FIG. 5 (a), the set temperature of one remote control device that operates one thermal valve 2 (here, the thermal valve 2a) is set to the maximum temperature, and individual temperature settings are set to the valve. This is done with 39 thermostat settings. Similarly, for example, also in FIG. 5B, the set temperature of one remote control device that operates one thermal valve 2 (here, the thermal valve 2f) is set to the maximum temperature, and individual temperature settings are set for the valve 39. This is done by setting the thermostat.

JP 2001-4157 A Japanese Patent Laid-Open No. 2004-11982 JP 2006-329570 A

  Incidentally, for example, in a heat source device including a heating circuit and a hot water supply circuit as shown in FIG. 4, the combustion fan 18 is also used during a single heating operation (single operation) in which only the heating operation is performed without performing the hot water supply operation. , 19 is driven, so that only a short time has passed since the hot water supply operation through the hot water supply circuit was stopped, and the hot water was operated alone while hot water remained in the hot water supply heat exchanger 29. The hot water is cooled by the air blow from the combustion fan 19 and wasted energy.

  Therefore, heat is supplied when a heat medium (for example, hot water) is supplied from the heating circuit to the heating device (hot water mat 10 or the like) within a short time (predetermined set time) from when the hot water supply operation is stopped (during heating independent operation). It has been proposed that the medium supply mode is as follows. That is, the temperature of the heat medium (hot water) supplied to the heating device from the heating circuit of the heat source device 1 as shown in FIG. 6A, for example, as shown in FIG. 6A with the heat operated valve 2 connected to the corresponding heating device opened. Is changed to a higher temperature such as 80 ° C. from the time point A or A ′ in the figure, and as shown in FIG. 6B, the liquid circulation pump 6 and the combustion fan 18.19 are driven (ON) and stopped. It has been proposed to perform on / off control of the supply of the heat medium to the heating device by performing (off) at predetermined intervals.

  When such on / off control of the heat medium supply is performed, the hot water staying in the hot water supply circuit is prevented from being cooled by the wind of the combustion fan (compared to the case where the combustion fan is driven continuously) The rate at which the hot water is cooled can be reduced), and energy saving can be achieved.

  However, when such on / off control of the heat medium supply is performed, the user can use one heat valve provided in the heating circuit of the heat source device 1 as shown in FIGS. 5 (a) and 5 (b), for example. When a plurality of (for example, two or three) hot water mats 10, panel heaters 43, and the like are connected to 2 and used, it has been found that the following problems occur.

  That is, for example, in the mode as shown in FIG. 5A, for example, when the operation of the hot water mat 10a is turned on and the hot water is sent from the heat source device 1 to the hot water mat 10a via the thermal valve 2a, It is assumed that on / off control of the supply of the heat medium is performed by, for example, sending warm water to the 10a and 10c sides. At this time, if the hot water mat 10c that has not been operated when the heat medium supply is on may start operation when the heat medium supply is subsequently turned off, the hot water mat 10c may be During a while, the heating medium is not supplied and does not warm. Therefore, there arises a problem that the user's usability is deteriorated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heat source device having functions of hot water supply and heating, and capable of connecting a plurality of heating devices to one heat medium supply control valve of a heating circuit. Even when a plurality of heating devices are connected to the heat source device, the heating device can be supplied with a heat medium according to the user's request, is easy to use and can save energy, and includes the heat source device. It is to provide a heating system that is easy to use and saves energy.

  In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, the heat source device of the first invention includes a hot water supply circuit provided with a hot water supply heat exchanger, and a heating circuit provided with a heat exchanger for heating and connected to the heating device, the hot water supply heat exchanger and the Common or individual burner device for heating a heat exchanger for heating, a combustion fan for supplying and exhausting the burner device, and a liquid circulation pump for circulating a liquid heat medium to the heating circuit through the heat exchanger for heating And heating operation control means for controlling the supply operation of the heat medium from the heating circuit to the heating device, and the heating circuit controls the presence or absence of the supply of the heat medium to the heating device. One or more medium supply control valves are provided in parallel, and at least one of the heat medium supply control valves can be connected to a plurality of heating devices, and the heating operation control The means is through the hot water supply circuit. When supplying the heat medium from the heating circuit to the heating device from when the hot water operation is stopped until a predetermined time elapses, the heat medium supply control valve connected to the corresponding heating device is opened. On / off control of the heat medium supply to the heating device is performed by driving and stopping the liquid circulation pump at a predetermined interval, and the liquid circulation pump is stopped during the on / off control of the heat medium supply. A configuration in which the liquid circulation pump is experimentally driven at a predetermined heating device operation detection timing, and a plurality of heating devices are provided in the open heat medium supply control valve when the liquid circulation pump is experimentally driven. Is connected, and a heating device operation increase recognizing means is provided for recognizing that the number of heating devices to be operated among the heating devices has increased. When the increase recognizing means recognizes the increase in the number of operating heating devices, the liquid circulation pump is driven continuously or intermittently from the time of the recognition, and a plurality of connected heat medium supply control valves are connected to the open state. The heating medium supply operation to the heating device is configured by the heating operation control means to solve the problem.

  In addition to the configuration of the first invention, the heat source device of the second invention has load value detection means for detecting the load value of the liquid circulation pump, and the load value detection means uses the load value detection means of the liquid circulation pump. When the detected load value detected at the time of trial driving is larger than the detected load value by the load value detecting means immediately before stopping the liquid circulation pump in the on / off control of the heating medium supply, the heating apparatus operation increase recognition means operates the heating apparatus. It is characterized by recognizing an increase in the number.

  Furthermore, the heating system of the third invention has the heat source device of the first or second invention, and a plurality of heating devices are connected to at least one heat medium supply control valve of the heating circuit of the heat source device, The heating device is provided with heat medium introduction operation means for manually operating whether or not the heat medium is introduced into the heating device from the heating circuit.

  The present invention has a hot water supply circuit provided with a hot water supply heat exchanger, and a heating circuit provided with a heating heat exchanger and connected to a heating device, the hot water supply heat exchanger and the heat exchange for heating. A common or individual burner device for heating the heater, and a combustion fan for supplying and exhausting the burner device, so that the hot water supply heat exchanger is heated by the burner device and of the heating heat exchanger. In each case of heating by the burner device, the combustion fan is driven. Therefore, for example, even if the hot water supply operation from the hot water supply circuit is not performed, the heating heat exchanger is heated and the combustion fan is driven during the heating operation for supplying the heating medium heated from the heating circuit to the heating device. As a result, wind is also sent to the hot water supply heat exchanger side, and the following phenomenon occurs.

  That is, normally, for example, when the hot water supply operation is intermittently performed, the hot water that is heated during the hot water supply operation and stays in the hot water supply circuit when the hot water supply is stopped is heated as it is or even from the cold water when it is heated. Although it is possible to supply hot water with a smaller heating amount than in the case, as described above, the heating single operation is performed within a short time (for example, 10 minutes) after the hot water supply is stopped, and combustion is performed along with the combustion of the heating burner device. When the fan is driven, the hot water staying in the hot water supply circuit is cooled by the wind from the combustion fan after the hot water supply is stopped.

  Therefore, when supplying a heat medium (for example, hot water) from the heating circuit to the heating device from when the hot water supply is stopped until a preset time elapses, the heat medium is intermittently supplied to the heating device. By performing the on / off control of the supply, the combustion fan is also driven intermittently, and the hot water staying in the hot water supply circuit is prevented from being cooled by the wind of the combustion fan (the combustion fan is continuously turned on). The rate at which the hot water in the hot water supply circuit is cooled can be reduced as compared with the case of driving.

  However, in the present invention, the heating circuit is provided with one or a plurality of heat medium supply control valves for controlling whether or not the heat medium is supplied to the heating device, and at least of the heat medium supply control valves. Since a plurality of heating devices can be connected to one heat medium supply control valve, the heat medium supply control valve connected to the corresponding heating device is provided when the heat medium is supplied from the heating circuit to the heating device. If the heating medium supply ON / OFF control is performed by simply driving and stopping the liquid circulation pump at predetermined intervals in the open state, the following problems occur.

  That is, a plurality of heating devices are connected to the heat medium supply control valve capable of connecting a plurality of heating devices in the heat source device of the present invention, and at least one heating device among the plurality of heating devices is When the operation is started, the heat medium is sent from the heat source device to the heating device, and the heat medium supply on / off control is performed, but the heating device that was not operating when the heat medium supply on during the heat medium supply on / off control is When the heating medium supply is turned off, when the simple heating medium supply on / off control is performed as described above, the heating device that starts the operation when the heating medium supply is turned off is heated. During the time when the medium is turned off, a problem that the heating medium is not supplied and does not warm for a while occurs and the convenience of the user is deteriorated.

  On the other hand, in the present invention, the liquid circulation pump is experimentally tested at a heating device operation detection timing that is predetermined when the liquid circulation pump is stopped during the heating medium supply on / off control (when the heat medium supply is off). A plurality of heating devices are connected to the open heat medium supply control valve at the time of trial driving of the liquid circulation pump, and the number of heating devices to be operated among the heating devices is increased. As described above, the heating device operation increase recognition means is provided, so that the heating device that was not operating when the heat medium supply is on during the on / off control of the heat medium supply, When the operation is started when the supply is turned off, it can be recognized that the number of heating devices has increased.

  When the increase in the number of operating heating devices is recognized by the heating device operation increase recognizing means, the liquid circulation pump is driven continuously or intermittently from the time of the recognition to open the heat medium supply control valve in the open state. By performing the heat medium supply operation to the plurality of heating devices connected to the heating medium, the heating device that was not in operation when the heat medium supply was turned on during the heat medium supply on / off control is turned off. When the operation is started at this time, the heating medium can be supplied to the heating device before a long time has elapsed since the start, and the occurrence of the above-described problems can be suppressed and the usability can be improved.

  In the heat source device of the present invention, load value detection means for detecting the load value of the liquid circulation pump is provided, and the detected load value detected by the load value detection means during the trial drive of the liquid circulation pump is the heat medium. The heating device operation increase recognizing means recognizes the increase in the number of operating heating devices when it is larger than the detected load value by the load value detecting means immediately before the liquid circulation pump is stopped in the supply on / off control. In addition, it is possible to recognize the increase in the number of operation heating devices, and to exert the above-described effects.

  Furthermore, according to the heating system of the present invention, the heat source device of the present invention is provided, and a plurality of heating devices are connected to at least one heat medium supply control valve of the heating circuit of the heat source device. Since there is provided a heat medium introduction operation means for manually operating the presence or absence of heat medium introduction from the heating circuit to the heating apparatus, among the plurality of heating apparatuses connected to the heat medium supply control valve, for heating By manually operating the heating medium introduction operation means of the heating apparatus that does not need to supply the heating medium, supply the heating medium to the heating apparatus that requires the heating medium supply without supplying the heating medium to the heating apparatus. It can be carried out. That is, it is possible to easily operate the heat medium introduction operation means manually and flexibly, and to control whether or not the heat medium is introduced into the heating device from the heating circuit, and to construct an easy-to-use heating system.

It is a block diagram which shows the principal part control structure of one Example of the heat-source apparatus which concerns on this invention. It is explanatory drawing which shows typically the system configuration | structure of the heating system (one Example of a heating system) provided with the heat source device of the Example. It is a typical time chart for explaining control operation in the heating system of an example. It is explanatory drawing which shows typically the system configuration example of the heating system provided with the heat-source apparatus. It is a schematic diagram for demonstrating the example which connects a some heating apparatus to one heat operated valve provided in the heating circuit in the heating system shown by FIG. It is a time chart for demonstrating the example of heating operation control in the heat source apparatus proposed conventionally.

  Embodiments of the present invention will be described below with reference to the drawings. Note that, in the description of the present embodiment, the same reference numerals are given to the same name portions as those in the examples described so far, and the duplicate description is omitted or simplified.

  FIG. 1 is a block diagram showing a main part control configuration of an embodiment of a heat source device according to the present invention. FIG. 2 schematically shows a system configuration of a heating system using the heat source device of the embodiment. Is shown in

  The heat source device of the present embodiment has a system configuration similar to that of the heat source device 1 provided in the heating system shown in FIG. 4, and in the heating system shown in FIG. Two panel heaters 43 are connected in parallel to the thermal valve 2 (2d) provided in the circuit. Each panel heater 43 (43a, 43b) is provided with a valve 39 with a thermostat. Even if the temperature of the supplied hot water is 60 ° C. or 80 ° C., for example, the panel heater 43 is arranged. The room temperature can be set to a desired temperature within a predetermined setting range such as about 10 ° C. to 28 ° C., for example. In FIG. 2, no heating device is connected to the thermal valves 2 c, 2 e, 2 f, but a heating device can also be connected to these thermal valves 2 c, 2 e, 2 f as appropriate.

  Further, as shown in FIG. 1, the control device 60 provided in the heat source device 1 of this embodiment includes a combustion control means 61, a fan drive control means 62, a heating operation control means 63, a memory unit 64, a pump. Drive control means 65, load value detection means 66, and heating device operation increase recognition means 67 are provided. The control device 60 includes a remote control device 3 that is signal-connected to the heat source device 1, a flow rate detection means 73, an incoming water temperature sensor 74, a hot water temperature detection sensor 113, electromagnetic valves (gas electromagnetic valves) 80 to 85, a proportional valve ( Gas proportional valves) 86 and 87, combustion fans 18 and 19, thermal valve 2, and liquid circulation pump 6 are signal-connected.

  When the heat source device 1 performs the heating operation, the hot water supply operation, the hot water filling operation to the bathtub 27, and the hot water replenishment operation as described above, the combustion control means 61 operates as described in the operation description of the conventional example. For example, the combustion operation of the hot water supply burner 17 and the heating burner 16 is appropriately controlled by the operation control of the gas solenoid valves 80 to 85 and the proportional valves 86 and 87, and the combustion fans 18 and 19 are driven at that time. A command is given to the fan drive control means 62 so as to be performed. It should be noted that the combustion control by the combustion control means 61 is performed even if it corresponds to a control method described later performed by the heating operation control means 63, and other combustion control is well known, so that detailed description thereof is omitted. However, the combustion control method by the combustion control means 61 is not particularly limited and is appropriately set.

  The load value detection means 66 is a means for detecting the load value of the liquid circulation pump 6. The load value detection means 66 takes in the drive current and drive voltage when the liquid circulation pump 6 is driven by, for example, the pump drive control means 65, and the liquid circulation pump 6 is determined from these drive current and drive voltage values and those values. The load value of the liquid circulation pump 6 is detected based on appropriate information such as relational data and relational expressions given in advance for obtaining the load value of the liquid circulation pump 6. Information for detecting the load value of the liquid circulation pump 6 is stored in the memory unit 64. Further, the detection of the load value of the liquid circulation pump 6 by the load value detection means 66 may be performed in synchronization with the driving timing of the liquid circulation pump 6 or may be always performed.

  In order to control the heating operation as described in the conventional example, the heating operation control unit 63 applies a command to the combustion control unit 61 so that the combustion control of the heating burner 17 can be performed, or the fan drive control unit 62 A command is added so that the drive control of the combustion fans 18 and 19 can be performed, or a command is given to the pump drive control means 65 so that the drive control of the liquid circulation pump 6 can be performed.

Further, the heating operation control means 63 is connected from the heating circuit to the heating device (in FIG. 2) from when the hot water supply operation through the hot water supply circuit of the heat source device 1 is stopped until a predetermined set time (for example, 10 minutes) elapses. In the example, when a heating medium (hot water in this case) is supplied to the high-temperature heating device 106, the hot water mat 10, and the panel heater 43), the thermal valve 2 connected to the corresponding heating device is opened to drive the pump. Heating by adding a command to the control means 65 and driving and stopping the liquid circulation pump 6 at predetermined intervals (S ₁ , S ₂ ) as shown in FIG. 3B, for example. The heat medium supply on / off control with the load confirmation operation as shown in FIG. 3A is performed based on the on / off control of the heat medium supply to the apparatus.

That is, the heating operation control means 63 determines in advance as shown in, for example, Tt (Tt1, Tt2) in FIG. 3A when the liquid circulation pump 6 is stopped during the on / off control of the heat medium supply by the reference operation. A command is given to the pump drive control means 65 to drive the liquid circulation pump 6 on a trial basis so that the liquid circulation pump 6 is driven on a trial basis at the heating apparatus operation detection timing. The value of the heating system operation of the detection timing value and said predetermined gap (S _{1, S 2)} are stored in the memory unit 64, the value of the setting interval S ₁ and S ₂ are also the same value in different values In addition, the heating device operation detection timing may be set a plurality of times within the set interval (S ₁ ) of the heat medium supply OFF.

  The heating device operation increase recognizing means 67 is such that when the liquid circulation pump 6 is experimentally driven, a plurality of heating devices are connected to the opened thermal valve 2, and the heating device that operates among the heating devices is operated. Is a means for recognizing that the number of In the present embodiment, the heating device operation increase recognition means 67 takes in the detected load value detected by the load value detection means 66 when the liquid circulation pump 6 is driven, and detects the load value when the liquid circulation pump 6 is experimentally driven. When the detected value detected by the means 66 is larger than the detected load value by the load value detecting means 66 immediately before the liquid circulation pump 6 is stopped in the on / off control of the heat medium supply, the increase in the number of operating heating devices is recognized (operation). Judged that the number of heating devices to increase).

  For example, only the panel heater 43b is operating and the panel heater 43a is not operating when the heating medium supply is ON during the ON / OFF control of the heating medium supply from the heating circuit to the panel heaters 43a and 43b. When the panel heater 43a starts operating when the medium supply is off, the flow rate of the heat medium flowing through the heating circuit increases, and the detected value detected by the load value detecting means 66 when the liquid circulation pump 6 is driven on a trial basis is the heat value. It becomes larger than the detected load value by the load value detecting means 66 immediately before the stop of the liquid circulation pump 6 in the on / off control of the medium supply. Therefore, in such a case, the heating device operation increase recognition means 67 recognizes an increase in the number of operation heating devices.

In addition, since the operation start and operation stop of the high temperature heating device 106 can be grasped by the control device 60, for example, the high temperature heating device 106 performs the heating device operation detection timing within the setting interval (S ₁ ) of the heat medium supply off. When the operation starts before or when the flow rate of the heat medium increases, the heating device operation increase recognizing means 67 takes that into consideration (that is, excluding the increase in load due to that). Recognize the increase in the number of operating heating devices.

  Moreover, the timing at which the detected load value detected by the load value detecting means 66 is taken in by the heating device operation increase recognizing means 67 may be synchronized with the driving timing of the liquid circulation pump 6 or may be always performed. It ’s good. The heating device operation increase recognizing means 67 detects the load value immediately before the liquid circulation pump 6 is stopped in the on / off control of the heating medium supply when the detected value detected by the load value detecting means 66 during the trial driving of the liquid circulation pump 6. When it is not larger than the detected load value by the means 66, it is determined that the number of operating heating devices has not increased.

  When the increase in the number of operating heating devices is recognized by the heating device operation increase recognition unit 67, the heating operation control unit 63 drives the liquid circulation pump 6 continuously or intermittently from the time of the recognition. A heat medium supply operation is performed to a plurality of heating devices (for example, the panel heater 43) connected to the opened heat valve 2. For example, when the heating apparatus operation increase recognition means 67 recognizes the increase in the number of operation heating apparatuses at the timing Tt2 in FIG. 3A, the time chart after Tt2 in FIG. As shown in the figure, after Tt2, on / off control of the heat medium supply to the heating device is performed by driving and stopping the liquid circulation pump 6 at the same set intervals as described above.

  Further, as shown in the time chart after Tt2 in FIG. 3C, the liquid circulation pump 6 after Tt2 (from the time when the increase in the number of operating heating devices is recognized by the heating device operation increase recognition means 67). The heating medium may be continuously supplied to the heating device (panel heater 43 in this case).

  As shown in FIGS. 3A and 3C, the driving of the liquid circulation pump 6 is controlled, and the temperature of the heat medium (warm water) sent to the heating device side is set to, for example, 80 ° C., thereby operating with a simple configuration. Corresponding to the heating device, hot water having an appropriate temperature from the heat source device 1 is appropriately supplied to the heating device, so that a heat source device and a heating device that are easy to use and can save energy can be formed.

  In addition, this invention is not limited to the said Example, A various aspect can be taken in the range which does not deviate from the technical scope of this invention. For example, when the liquid circulation pump 6 is driven by the pump driving means 65, the load value detection means 66 directly detects the load value (drive current value or drive voltage value) of the liquid circulation pump 6. However, the load value detection means 66 may be a means for indirectly detecting the load value of the liquid circulation pump 6.

  In this case, for example, provided is a liquid flow rate detection means for obtaining the flow rate of the liquid flowing through the liquid circulation passage 5 based on the detected temperature of the heating high temperature thermistor 33, the detected temperature of the heating low temperature thermistor 36, and the combustion heat amount of the heating burner device 16, The load value detection means 66 determines the load value of the liquid circulation pump 6 when the liquid circulation pump 6 is driven based on the flow rate of the liquid detected by the liquid flow rate detection means, for example, based on the detected flow rate and the flow rate. The load value of the liquid circulation pump 6 can be indirectly detected based on the load value detection data for obtaining the load value of the circulation pump 6. The amount of combustion heat of the heating burner device 16 can be determined based on, for example, the control information of the combustion control means 61, and the method thereof is well known and will not be described here. Etc. can be obtained as appropriate.

  In addition, the indirect detection of the load value of the liquid circulation pump 6 and the direct detection as in the above-described embodiment may be switched as necessary. Even if trouble occurs, it can respond.

  Further, the heating device operation increase recognition means 67 does not necessarily use the detected value of the load value detection means 66 when the liquid circulation pump 6 is driven on a trial basis at the heating device operation detection timing according to the command of the heating operation control means 63. The increase in the number of operating heating devices is not necessarily determined on the basis of this, and when the liquid circulation pump 6 is experimentally driven at the heating device operation detection timing, the heating valve 2 in the open state is heated by another method. You may make it recognize that the number of the heating apparatus which the apparatus is connected and operates among this heating apparatus increased. For example, when the flow rate of the heat medium flowing through the heating circuit is detected at the heating device operation detection timing, and the value changes more than the flow rate of the heat medium immediately before the liquid circulation pump 6 is stopped in the on / off control of the heat medium supply. Alternatively, it may be determined that the number of operating heating devices has increased.

  Furthermore, in the said Example, although the heat source apparatus 1 separately provided the heating burner apparatus 16 which heats the heating heat exchanger 28, and the hot water supply burner apparatus 17 which heats the hot water supply heat exchanger 29, it is common. The heat exchanger 28 for heating and the hot water supply heat exchanger 29 may be heated by the burner device, and the combustion fan may be a common combustion fan.

  Furthermore, in the above-described embodiment, six thermal valves 2 are provided in the heating circuit. However, the number of thermal valves 2 is not particularly limited, and may be set as appropriate. can do.

  Furthermore, in the said Example, although the two panel heaters 43 were connected to one thermal valve 2, the heating system was formed, but three or more panel heaters 43 are provided in one thermal valve 2, and a heating system is provided. It may be formed, a plurality of panel heaters 43 may be connected to the plurality of thermal valves 2, or a plurality of other heating devices (for example, the hot water mat 10) other than the panel heater 43 may be connected. Further, the number and connection modes of the high-temperature heating device 106 and the hot water mat 10 connected to the liquid circulation passage 5 of the heat source device 1 are not necessarily the same as those in the above-described embodiment, and are appropriately set.

  Furthermore, in addition to connecting a heating device to the liquid circulation passage 5 of the heat source device 1, for example, a heat collector that collects the heat of sunlight may be connected.

  Furthermore, in the said Example, although the heat source apparatus 1 was set as the composite apparatus provided with the hot-water supply function, the reheating function of a bath, and the heating function, it is good also as an apparatus which does not have a hot-water supply function and a reheating function.

  Furthermore, the heat source device applied to the heating system of the present invention may be provided with a burner device for oil combustion instead of the burner device that performs gas combustion provided in the above-described embodiment, for example. Further, the liquid circulated in the liquid circulation passage 5 is not limited to water, and may be another liquid such as an antifreeze liquid.

  In the heat source device and the heating system including the heat source device of the present invention, a plurality of heating devices can be connected to one heating medium supply control valve of a heating circuit provided in the heat source device, and the plurality of heating devices are connected. Even in this case, heating can be satisfactorily performed according to the presence or absence of the operation, it is easy to use, and energy saving can be achieved, so that it can be used as, for example, a household heat source device or a heating system.

DESCRIPTION OF SYMBOLS 1 Heat source device 2, 2a-2f Thermal valve 3 Remote control device 5 Liquid circulation path 6 Liquid circulation pump 10 Hot water mat 16 Heating burner device 17 Hot water supply burner device 39 Valve 60 Control device 61 Combustion control means 62 Fan drive control means 63 Heating Operation control means 65 Pump drive control means 66 Load value detection means 67 Heating device operation increase recognition means

Claims (3)

  A hot water supply circuit provided with a hot water supply heat exchanger, and a heating circuit provided with a heating heat exchanger and connected to a heating device, and heating the hot water supply heat exchanger and the heating heat exchanger An individual burner device, a combustion fan for supplying and exhausting the burner device, a liquid circulation pump for circulating a liquid heat medium to the heating circuit through the heating heat exchanger, and the heating circuit to the heating device A heating operation control means for controlling the supply operation of the heat medium, and the heating circuit includes one or more heat medium supply control valves for controlling whether or not the heat medium is supplied to the heating device. A plurality of heating devices can be connected to at least one of the heat medium supply control valves among the heat medium supply control valves, and the heating operation control means is configured to perform a hot water supply operation through the hot water supply circuit. Predetermined from the stop When supplying the heat medium from the heating circuit to the heating device until a predetermined time elapses, the liquid is supplied at a predetermined interval by opening the heat medium supply control valve connected to the corresponding heating device. Heating medium supply on / off control to the heating device is performed by driving and stopping the circulation pump. The heating device operation detection predetermined when the liquid circulation pump is stopped during the on / off control of the heating medium supply. The liquid circulation pump is driven on a trial basis at a timing for use, and a plurality of heating devices are connected to the open heat medium supply control valve when the liquid circulation pump is experimentally driven. Heating device operation increase recognition means for recognizing that the number of heating devices to be operated has increased is provided. When the increase is recognized, supply of the heat medium to the plurality of heating devices connected to the open heat medium supply control valve by driving the liquid circulation pump continuously or intermittently from the recognition time A heat source device characterized in that the operation is performed by a heating operation control means.   The liquid circulation pump has load value detection means for detecting a load value of the liquid circulation pump, and the detected load value detected by the load value detection means during the trial drive of the liquid circulation pump in the on / off control of the heat medium supply 2. The heat source apparatus according to claim 1, wherein the heating apparatus operation increase recognition means recognizes an increase in the number of operating heating apparatuses when the load value detection means is larger than the detected load value immediately before stopping.   A heat source device according to claim 1 or 2, wherein a plurality of heating devices are connected to at least one heat medium supply control valve of a heating circuit of the heat source device, and heating from the heating circuit is connected to the heating device. A heating system, characterized in that a heating medium introduction operation means for manually operating whether or not the heating medium is introduced into the apparatus is provided.

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