JP5613039B2 - Heat source equipment - Google Patents

Description

  The present invention relates to a heat source device that is formed by thermally connecting a reheating circulation path of bathtub hot water and a heating liquid circulation path.

  For example, a heat source device is used in which a circulation passage that circulates a liquid such as hot water in a heating device such as a hot water mat used for floor heating and a recirculation circulation passage for bath water are thermally connected (for example, patents). Reference 1).

  FIG. 2 shows a system configuration example of the heat source device under development by the inventors of the present application, and this system configuration is also applied to an embodiment described later. The heat source device has a hot water supply function, a bath retreat function, and a heating function, and the heating device 10 (10a to 10c) and the bathtub 27 are thermally connected to the heat source device. In the figure, a heating liquid circulation passage 5 for circulating a liquid (for example, hot water) to the heating device 10 (10a to 10c) is provided by pipes 89, 90, 91, 92, 93, 94 provided in the appliance case 42. , 95, 96, 97, 98, 99 and conduits 40, 41, 44, 45, 59 provided outside the instrument case 42.

  The conduit 40 is connected to the conduit 97, the conduits 41 and 44 are connected to the conduit 95 via the liquid confluence means 115 and the conduit 59, and the conduit 45 is connected to the conduit 90 via the liquid branching means 37. It is connected. The pipes 40 and 41 are connected to the internal passage 51 of the heating device 10a, and the pipes 44 and 45 are connected to the internal passage 52 of the heating devices 10b and 10c, respectively. The heating devices 10b and 10c are, for example, low-temperature heating devices such as hot water mats, and the heating device 10a is a high-temperature heating device to which a liquid having a predetermined high-temperature heating set temperature (for example, 80 ° C.) is supplied. It is. A heating valve 12 is provided in the heating device 10a. In addition to the one shown in the figure, a heating device can be connected to the liquid branching means 37 and the liquid merging means 115 as needed.

  In the heating liquid circulation passage 5, a liquid circulation pump 6 that circulates liquid in the heating liquid circulation passage 5, and a heating / heating heat exchanger 28 that heats the liquid circulated by driving the liquid circulation pump 6 ( 28a, 28b). A pipe 95 is connected to the liquid introduction side of the heating heat exchanger 28a, and a pipe 94 is connected to the liquid outlet side, and a pipe 91 is connected to the liquid introduction side of the heating heat exchanger 28b. Pipe lines 92 are connected to the outlet side. A heating high temperature thermistor 33 is provided in the pipe line 92, and the heating high temperature thermistor 33 detects the temperature of the liquid coming out of the heating heat exchanger 28b.

  Further, the pipe line 91 is connected to the discharge side of the liquid circulation pump 6 together with the pipe line 90. The pipe line 91 has a heating low temperature for detecting the temperature of the liquid introduced into the heating heat exchanger 28b. A thermistor 36 is provided. Further, the pipe 93 is connected to the suction port side of the liquid circulation pump 6, and a cistern device 100 is interposed between the pipe 93 and the pipe 94. The tank capacity of the cistern apparatus 100 is, for example, about 1 to 1.8 liters, and the cistern apparatus 100 is open to the atmosphere via the atmosphere introduction passage 53.

  Heating heat exchangers 28 (28a, 28b) are provided in the combustion chamber 24, and the combustion chamber 24, together with the heating heat exchanger 28, burners 16 for heating the heating heat exchanger 28. And a combustion fan 18 for supplying and exhausting combustion of the burner 16 is provided. A combustion chamber 25 is provided in communication with the combustion chamber 24, and the combustion chamber 25 has a burner 17, a hot water heat exchanger 29 (29 a, 29 b) heated by the burner 17, and combustion of the burner 17. A combustion fan 19 for supplying and exhausting air is provided.

  Gas pipes 31 and 32 for supplying fuel to the burners 16 and 17 are connected to the burners 16 and 17. These gas pipes 31 and 32 are branched from the gas pipe 30, and a gas on / off valve 80 is interposed in the gas pipe 30. The gas pipe 31 is provided with a gas proportional valve 86 and gas on-off valves 81 and 82, and the gas pipe 32 is provided with a gas proportional valve 87 and gas on-off valves 83, 84 and 85, respectively. These valves 80 to 87 are all formed by electromagnetic valves, the gas on / off valves 80 to 85 control the fuel supply / stop to the corresponding burners 16 and 17, and the gas proportional valves 86 and 87 correspond to each other. The amount of fuel supplied to the burners 16 and 17 is controlled by the valve opening. The combustion control of the burners 16 and 17 is controlled by an appropriate control method by a combustion control means (not shown).

  A water supply introduction passage 88 is provided on the inlet side of the hot water supply heat exchanger 29a. The water supply introduction passage 88 is connected to the cistern apparatus 100 via the connection passage 57 and the makeup water electromagnetic valve 46 and is connected to the heating liquid circulation passage 5. On the inlet side of the water supply introduction passage 88, a flow rate sensor 73 for detecting the amount of hot water flowing through the water supply introduction passage 88 and a water entrance temperature sensor 74 for detecting the water entrance temperature are provided. A hot water supply passage 26 is provided on the outlet side of the hot water supply heat exchanger 29b, and the front end side of the hot water supply passage 26 is led to an appropriate hot water supply destination. The hot water supply passage 26 is connected to the water supply introduction passage 88 via a branch passage 70 and a hot water passage switching valve 58. A sensor 113 is provided, and a hot water temperature detection sensor 114 is provided on the hot water supply heat exchanger 29 side.

  A recirculation circulation passage 13 having an outgoing pipe 14 and a return pipe 15 is connected to the bathtub 27, and this recirculation circulation path 13 is connected via a liquid-liquid heat exchanger 7 as heat exchange means. The heating liquid circulation passage 5 is thermally connected. A flow rate control valve 38 is provided at the inlet of the liquid-liquid heat exchanger 7 in the pipe line 89 forming the liquid-liquid heat exchanger 7 of the heating liquid circulation passage 5. The recirculation circulation passage 13 is provided with a bathtub hot water circulation pump 20 that circulates the bathtub hot water, and the liquid-liquid heat exchanger 7 drives the bathtub hot water circulating in the recirculation circulation path 13 by driving the bathtub hot water circulation pump 20. It consists of a heated bath heat exchanger.

  The recirculation circulation passage 13 is supplied with a bath temperature sensor 21 as a bath water temperature detecting means for detecting the temperature of the bathtub hot water, a water level sensor 22 for detecting the water level of the bath water, and the water flow in the recirculation circuit 13. A bath water flow switch 34 to be detected is interposed. 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. One end side of the bath pouring introduction passage 23 is connected to the pouring water unit 55, 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. In addition, the hot water supply heat exchanger 29 passes through the hot water supply passage 26 and the pipe 54, the pouring water unit 55, the bath pouring introduction passage 23, the bath hot water circulation pump 20, the liquid-liquid heat exchanger 7, and the outgoing pipe 14 in this order. The passage leading to the bathtub 27 constitutes a hot water injection passage for hot water filling and water injection. In FIG. 2, reference numerals 75 and 77 denote drain discharge passages, and reference numeral 76 denotes neutralizing means for neutralizing the drain.

  In this heat source device, when the heating operation of the heating device 10a and the reheating operation of the bathtub hot water are performed, the heating heat exchanger 28 is heated by the burner 16 and the liquid passing through the heating liquid circulation passage 5 is heated. The temperature is set to a predetermined high temperature setting temperature (for example, 80 ° C.), and this liquid is circulated by driving the liquid circulation pump 6 to perform a function of a high-temperature liquid circulation mode. At the time of the operation of the function of the high-temperature gas circulation mode, the low-temperature capacity switching thermal valve 47 is closed, and the liquid is circulated as shown by arrows A to F in FIG.

  For example, the heating operation of the heating device 10a is performed by opening the thermal valve 12 of the heating device 10a, and is introduced into the heating heat exchanger 28a from the pipe 95 as shown by an arrow C in the figure. The liquid heated by the heating heat exchanger 28a is introduced into the cistern apparatus 100 as indicated by the arrow D, and is introduced into the liquid circulation pump 6 through the conduit 93 as indicated by the arrow E, as indicated by the arrow F. Thus, it introduces into the heat exchanger 28b for heating through the pipe line 91, and heats it. By this heating, the temperature of the liquid is set to, for example, 80 ° C. (so that the temperature detected by the heating high temperature thermistor 33 is 80 ° C.), and as shown by arrows A and B, the pipes 92, 97, and 40 are sequentially passed through. It introduces into the heating apparatus 10a. The liquid introduced into each heating apparatus 10a returns to the pipe 95 through the corresponding pipes 41 and 44 and the liquid merging means 115.

  In this state, when the reheating operation of the bathtub hot water is performed, the flow rate control valve 38 is opened so that the liquid that has passed through the pipe 92 is moved to the pipe 89 as shown by an arrow B ′ in the figure. The bath hot water circulation pump 20 is driven while the liquid flowing to the pipe 89 side (liquid-liquid heat exchanger 7 side) is returned to the pipe 95 through the pipe 96, and the bath hot water is drawn. Circulate as shown by arrow H. The opening operation of the flow rate control valve 38 is performed after the bathtub hot water circulation pump 20 is driven to circulate the bathtub hot water. Then, the hot water of the bathtub and the liquid having a high temperature setting temperature (for example, 80 ° C.) passing through the heating liquid circulation passage 5 are heat-exchanged via the liquid-liquid heat exchanger 7, and the temperature of the hot water in the bathtub 27 ( The bath water reheating operation is performed until the temperature detected by the bath temperature sensor 21 reaches the bath set temperature.

  Moreover, when only the reheating operation of the bath water is performed without performing the heating operation of the high-temperature heating device 10a, the high temperature heated by the heating heat exchanger 28b since the thermal valve 12 of the heating device 10a is closed. A liquid having a set temperature (for example, a liquid at 80 ° C.) passes through the pipe line 92 as indicated by an arrow A, and then does not pass through the pipe line 97 but as shown by an arrow B ′ in the figure. Thread to the 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. When the temperature detected by the bath temperature sensor 21 reaches the bath set temperature, combustion of the burner 16 is stopped, and the liquid circulation pump 6 and the bathtub hot water circulation pump 20 are stopped after a predetermined post pump time has elapsed.

  On the other hand, when the heating operation of the heating devices 10b and 10c is performed, the liquid passing through the heating liquid circulation passage 5 and the liquid passing through the heating liquid circulation passage 5 are set at a predetermined low temperature setting temperature (for example, 60 ° C.) lower than the high temperature setting temperature. The function of the low-temperature liquid circulation mode to be circulated is performed. During the operation of the function of the low-temperature liquid circulation mode, circulation is performed as indicated by arrows C, D, E, and F as in the case of the operation of the function of the high-temperature liquid circulation mode, but the heating heat exchanger 28 is heated by the burner 16. Is heated by the heating heat exchanger 28b and the temperature of the liquid led out to the pipe line 92 is set to 60 ° C., for example.

  Then, by opening the low-temperature capacity switching thermal valve 47, the liquid that has passed through the pipe line 92 is introduced into the pipe line 93 as shown by the arrow A in the figure, and is directed from the cistern 100 side toward the liquid circulation pump 6 side. Along with the liquid passing as shown by the arrow E in the figure, the liquid is introduced into the heating devices 10b and 10c through the liquid circulation pump 6 and sequentially through the pipelines 90 and 45 as shown by the broken line arrow G in the figure. The liquid that has passed through the heating devices 10 b and 10 c returns to the pipe line 95 via the pipe line 44 and the liquid joining means 115.

  Further, when a reheating command for bath water is output during the heating operation of the heating devices 10b and 10c, the low temperature capacity switching thermal valve 47 is closed (or the valve opening amount is reduced), and the reheating operation is performed. Similarly to the time, the temperature of the liquid heated by the heating heat exchanger 28b and led to the pipe line 92 is set to 80 ° C., for example, and the temperature of the liquid passing through the pipe line 89 is about 80 ° C. Circulate (performs the function of the high-temperature liquid circulation mode).

  In this case, the high-temperature liquid led out from the heating heat exchanger 28b to the pipe 92 is closed in the pipe 93 by closing the low-temperature capacity switching thermal valve 47 (or reducing the valve opening amount). Is not introduced (or only a small amount is introduced). In the heating devices 10b and 10c, after the temperature is lowered by the heat exchange with the bath water through the pipe 89, the liquid whose temperature is further lowered by passing through the pipes 96 and 95 and the cistern 100. Since it is introduced through the conduit 93, the liquid circulation pump 6, and the conduit 90, the temperature of the liquid introduced into the heating devices 10b and 20c is about 60 ° C.

  Further, in this heat source device, when performing hot water filling (automatic hot water filling operation) to the bathtub 27, the water passing through the hot water supply heat exchanger 29 is heated by the combustion of the burner 17, and hot water is supplied to the bathtub 27 through the hot water filling water injection passage. Pour into. Then, after this automatic hot water filling, for example, during the heat retention operation time of 4 hours, the detected temperature of the bath temperature sensor 21 is taken, and the detected temperature exceeds the predetermined allowable range from the preset bath set temperature. When the temperature drops, the operation of the reheating operation is performed for 3 minutes, for example, and the operation of the function of the heat retention mode is performed so that the detected temperature of the bath temperature sensor 21 becomes the bath set temperature.

Japanese Patent Laid-Open No. 8-35657

  By the way, bathing hot water replenishment may be started when a person taking a bath feels that the bath water temperature is "warm" and operates a reheating switch provided on the remote control device. In the operation of the mode function, it may be started when the bath water temperature becomes lower than the allowable range. When a person feels "warm" during bathing and operates the chasing switch, it is necessary to chase as soon as possible to reach the bath set temperature, but in the operation of the function of the warming mode, the person bathes. If not, the speed of chasing should be slow.

  However, in the prior art, as described above, at the time of replenishment, the liquid in the liquid circulation passage 5 is always heated to 80 ° C., and the replenishment operation is performed so that the replenishment is performed quickly. In order to heat the liquid in the liquid circulation passage 5 to a high temperature, not only a large amount of energy is required, but also a large amount of heat is dissipated, which is wasteful.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to appropriately perform a reheating operation of a bath by exchanging heat with a liquid circulation passage for heating without wasting heat energy as much as possible. An object of the present invention is to provide a heat source device that can be used.

  In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, the first invention has a heating liquid circulation passage that circulates liquid and supplies it to the heating device, and a recirculation circulation passage connected to the bathtub. The heating liquid circulation passage is thermally connected to the heating liquid circulation passage through the liquid circulation pump for circulating the liquid in the heating liquid circulation passage, and the liquid circulated by driving the liquid circulation pump. A heating heat exchanger for heating the hot water is provided, and a hot water circulation pump for circulating hot water in the bathtub is provided in the recirculation circulation passage. The liquid in the heating liquid circulation passage is circulated while being heated, and the bathtub hot water is circulated through the recirculation circulation passage, so that the bathtub hot water and the liquid circulating in the heating liquid circulation passage are brought forward. A heat source device having a function of exchanging heat through the heat exchanging means to replenish bathtub hot water, wherein the liquid passing through the heating liquid circulation passage is circulated as a predetermined high temperature set temperature. And a function of a low-temperature liquid circulation mode for circulating the liquid passing through the heating liquid circulation passage as a predetermined low-temperature set temperature lower than the high-temperature set temperature. A bather presence / absence judging means for judging whether or not the bather presence / absence judging means determines that there is a bather, and when the bath water is replenished, the liquid is circulated in the high-temperature liquid circulation mode, When it is determined by the bather presence / absence determining means that there is no bather, when the bath water is refilled, the liquid is supplied in the low temperature liquid circulation mode. And a means for solving the problems with the construction having a liquid circulation mode switching means when reheating the mode switch so as to ring.

  In addition to the configuration of the first invention, the second invention detects a water level sensor for detecting the water level of the bathtub hot water and that a person is bathing in the bathtub based on the detected water level of the water level sensor. A bather detecting means for detecting whether or not a bather is present when the bathing of the person in the bathtub is detected by the human bathing detecting means, and the bathing detection means is configured to enter the bathtub. It is characterized in that it is determined that there is no bather when the bathing of the person is not detected.

  Further, in the third invention, in addition to the configuration of the first or second invention, a bath-arranged remote control device and a kitchen-arranged remote control device are signal-connected to the heat source device, and a bather presence / absence judging means is provided. Determines that there is a bather when a bathing hot water refill instruction is issued by the remote control device of the bathroom arrangement, and there is no bather when a bath hot water refilling instruction is issued by the remote control device of the kitchen arrangement It is characterized by judging.

  Furthermore, the fourth invention has a bathtub hot water temperature detecting means for detecting the temperature of the bathtub hot water in addition to the configuration of the first, second or third invention, and the recirculation liquid circulation mode switching means includes: When the temperature detected by the bath water temperature detecting means is lower than the preset approach temperature lower than the predetermined bath set temperature when the liquid is circulated in the low temperature liquid circulation mode, the liquid is switched to the high temperature liquid circulation mode. The liquid is circulated in the high-temperature liquid circulation mode until the temperature detected by the bath water temperature detecting means reaches the set approach temperature, and then the liquid is circulated by switching to the low-temperature liquid circulation mode. .

  Furthermore, a fifth aspect of the invention is a high-temperature heating device in which a liquid at a predetermined high-temperature heating set temperature is supplied to the heating liquid circulation passage in addition to the configuration of any one of the first to fourth aspects of the invention. The reheating liquid circulation mode switching means connected is characterized in that the liquid is circulated as a high temperature liquid circulation mode during operation of the high temperature heating device.

  According to the present invention, the function of the high-temperature liquid circulation mode for circulating the liquid passing through the heating liquid circulation passage as a predetermined high-temperature setting temperature, and the liquid passing through the heating liquid circulation passage in advance lower than the high-temperature setting temperature. A function of a low-temperature liquid circulation mode that circulates as a predetermined low-temperature set temperature, and when the bath water is replenished when it is determined that there is a bather at the time of bathing of the bath water, the liquid is used in the high-temperature liquid circulation mode. When the bath water is replenished when it is determined that there is no bather, the mode is switched to circulate the liquid in the low-temperature liquid circulation mode, so that heat energy is not wasted as much as possible. If necessary, the bath can be reheated by heat exchange with the liquid circulation passage for heating.

  In other words, when there is a bather, for example, a person feels “slimy” while taking a bath, so there is a high possibility that the person will be replenished, so the liquid in the liquid circulation passage is circulated in the high-temperature liquid circulation mode. By replenishing hot water, it is possible to replenish quickly and to enable comfortable use by the user. On the other hand, when it is determined that there is no bather, for example, when reheating in the operation of the heat retention mode function, the liquid in the liquid circulation passage is circulated in the low-temperature liquid circulation mode to replenish the bath water. Thus, by slowly retreating, it is possible to retreat with a small amount of heat energy, and it is possible to suppress a loss of heat energy due to heat radiation, so that waste of heat energy can be eliminated.

  Also, based on the water level detected by the water level sensor that detects the level of the hot water in the bathtub, it is determined that there is a bather when detecting that a person is bathing in the bathtub, and that the person is bathing in the bathtub. By detecting that there is no bather when detection is not performed, it is possible to accurately determine the bathing of a person in the bathtub, and as described above, as much as possible without wasting heat energy as much as possible. Appropriately, the bath can be reheated by exchanging heat with the liquid circulation passage for heating.

  Furthermore, it is determined that there is a bather when a bathing hot water refill instruction is issued by the bathroom-arranged remote control device among the bathroom-arranged remote-control device and the kitchen-arranged remote-control device signal-connected to the heat source device, and the kitchen By determining that there is no bather when the remote control device of the arrangement issues a bath water hot water instruction, it is possible to accurately determine the person bathing in the bathtub, and as described above, heat energy is not wasted as much as possible. In addition, it is possible to appropriately perform the bath reheating operation by exchanging heat with the liquid circulation passage for heating as necessary.

  In other words, when performing a chasing operation by operating the bath remote control device, the user is chasing the chasing operation in the bathroom, so there is a high possibility that the user will take a bath without taking any time during or after bathing. By using the high-temperature liquid circulation mode, it is possible to comfortably use it with quick rebirth. On the other hand, when the chasing operation is performed by operating the kitchen remote control device, the user is not in the bathroom, so there is a high possibility that the user will take a bath after a certain amount of time after the operation. The waste of heat energy can be eliminated by performing the chasing.

  Furthermore, when liquid is circulated in the low-temperature liquid circulation mode at the time of reheating bath water, the temperature detected by the bath water temperature detecting means is lower than the preset approach temperature that is lower than the preset bath setting temperature. When it is, the liquid is circulated by switching to the high-temperature liquid circulation mode, and after the liquid is circulated in the high-temperature liquid circulation mode until the temperature detected by the bath water temperature detecting means reaches the set approach temperature, the low-temperature liquid circulation mode The following effects can be obtained by switching the liquid to and circulating the liquid.

  For example, when the user tries to take a bath after operating the kitchen remote control device for a while, when a rebirth command is issued from the kitchen remote control device, the bath water temperature is lower than the set approach temperature In slow recirculation in the low-temperature liquid circulation mode, the bath water temperature may not be close to the bath set temperature when the user bathes, but the bath water temperature may be too low. By swiftly chasing until it becomes possible, the bath water temperature can be raised to a temperature close to the set temperature by the time the user tries to bathe, and the bath water can be used comfortably. After the water temperature reaches the set approach temperature, it is possible to prevent the hot water having a high temperature from being led out to the bathtub from the recirculation circuit by slowly reheating.

  Further, a high-temperature heating device to which a liquid having a predetermined high-temperature heating set temperature is supplied is connected to the heating liquid circulation passage, and the reheating liquid circulation mode switching means is configured to operate the high-temperature liquid during operation of the high-temperature heating device. By circulating the liquid as a circulation mode, when a high-temperature heating device is connected, even when it is determined that there is no bather, for example, when retreating in the operation of the function of the heat retention mode, Due to the liquid circulation in the liquid circulation mode, the high-temperature heating apparatus can be accurately operated.

It is a block diagram which shows the control structure of one Example of the heat-source apparatus which concerns on this invention. It is explanatory drawing which shows typically the system structural example of a heat-source apparatus, and its operation example.

  Hereinafter, embodiments of the present invention will be described 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 of the constituent elements described so far, and the redundant description thereof is omitted or simplified.

  The system configuration of the heat source device of the present embodiment is the same as that of the heat source device shown in FIG. 2, and the characteristic feature of this embodiment is that the control configuration shown in FIG. That is, it is configured to control the operation when whispering. The heat source device control means 60 includes a person bathing detection means 62, a bather presence / absence judgment means 63, a reheating liquid circulation mode switching means 64, and a combustion control means 65. It is connected to the kitchen remote control device 2.

  The combustion control means 65 is a means for controlling the combustion during the operation of each function as described above. Based on detection signals from the water level sensor 22, the bath temperature sensor 21, the bath water flow switch 34, and the like, the bath hot water circulation is performed. The pump 20, the liquid circulation pump 6, the low-temperature capacity switching thermal valve 47, the gas proportional valve 86, the gas on / off valves 81 and 82, the combustion fan 18, etc. are controlled.

  The person bathing detection means 62 detects that a person is bathing in the bathtub 27 based on the water level detected by the water level sensor 22. Specifically, for example, a reference value for fluctuation of the water level is given in advance, and when the fluctuation of the detected water level of the water level sensor 22 is greater than or equal to this reference value, it can be determined that a person has bathed. This determination method is appropriately set. When a person is detected, the person bathing detection means 62 adds the detection signal to the bather presence / absence determination means 63.

  The bather presence / absence judging means 63 is a means for judging whether or not there is a bather when the bath water is replenished. When the person bathing detection means 62 detects a person bathing in the bathtub 27, that is, When the person detection signal from the person bathing detection means 62 is applied to the bather presence / absence judgment means 63, it is judged that there is a bather, and when the person bathing detection means 62 does not detect the person bathing in the bathtub 27 Judge that there are no bathers. The bather presence / absence judging means 63 judges that there is a bather when the bath remote controller 1 issues a bath hot water refill instruction (for example, when the bath remote switch 1 is turned on). When the kitchen remote control device 2 issues a bath hot / water renewal command (for example, when the kitchen remote control device 2 reheating switch is turned on), it is determined that there is no bather. These determination signals are then applied to the reheating liquid circulation mode switching means 64.

  The reheating liquid circulation mode switching means 64 circulates the liquid in the high temperature liquid circulation mode when the bathing water is replenished when the bather presence / absence judging means 63 determines that there is a bather. When the presence / absence determination means 63 determines that there is no bather, when the bath water is replenished, the mode is switched so that the liquid is circulated in the low-temperature liquid circulation mode. The reheating liquid circulation mode switching means 64 always circulates the liquid in the high temperature liquid circulation mode during the operation of the high temperature heating device 10a. The reheating liquid circulation mode switching unit 64 applies a mode switching signal to the combustion control unit 65 when switching between these modes.

  The combustion control means 65 receives the mode switching signal from the recirculation liquid circulation mode switching means 64 and opens / closes the gas proportional valve 86 and the gas on / off valves 81 and 82, controls the rotation drive of the combustion fan 18, and switches the low temperature capability. When performing the opening / closing control of the thermal valve 47, the drive control of the liquid circulation pump 6 and the like and circulating the liquid in the high temperature liquid circulation mode, the liquid passed through the heating liquid circulation passage 5 is set as the high temperature set temperature (for example, 80 ° C.). When circulating and circulating the liquid in the low temperature liquid circulation mode, the liquid passing through the heating liquid circulation passage 5 is circulated as a predetermined low temperature setting temperature (for example, 60 ° C.). Then, the bathtub hot water circulation pump 20 is driven so that the bathtub hot water is reheated so that the temperature detected by the bath temperature sensor 21 becomes the bath set temperature.

  The reheating liquid circulation mode switching means 64 is set to a temperature that is detected by the bath temperature sensor 21 when the liquid is circulated in the low temperature liquid circulation mode by a set temperature (for example, 2 ° C.) rather than a predetermined bath set temperature. When the temperature is lower than the low set approach temperature, the liquid is circulated by switching to the high temperature liquid circulation mode. After the liquid is circulated in the high temperature liquid circulation mode until the temperature detected by the bath temperature sensor 21 reaches the set approach temperature, the low temperature liquid is circulated. Switch to circulation mode to circulate the liquid.

  In addition, this invention is not limited to the said Example, It sets suitably. For example, in the above embodiment, the bath remote control device 1 and the kitchen remote control device 2 are connected to the heat source device, but only one of them may be connected, or the remote control device placed in the living room or the washroom. A remote control device or the like may be connected. When the bath remote control device 1 is not connected, the kitchen remote control device 2 or the like is provided with a bath replenishment operation function or the like. Depending on whether or not bathing is detected, it is preferable to determine whether or not there is a bather when chasing the bath water.

  Further, in the above embodiment, the reheating liquid circulation mode switching means 64, when circulating the liquid in the low temperature liquid circulation mode, detects the temperature detected by the bath temperature sensor 21 at a set temperature (predetermined from the preset bath temperature). For example, when the temperature is lower than the set approach temperature by 2 ° C., the liquid is circulated by switching to the high temperature liquid circulation mode, and the liquid is circulated in the high temperature liquid circulation mode until the temperature detected by the bath temperature sensor 21 reaches the set approach temperature. After that, the liquid is circulated by switching to the low-temperature liquid circulation mode, but such control can be omitted.

  Furthermore, in the said Example, although it 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.

  Furthermore, in the heat source device of the present invention, for example, a burner for oil combustion may be provided instead of the burner for performing gas combustion provided in the above embodiment, or an electric heater may be provided. Further, the liquid circulated in the heating liquid circulation passage 5 is not limited to water, and may be another liquid such as an antifreeze liquid.

  The heat source device of the present invention can reduce the waste of heat energy during operation for a short time such as operation of a hot water bath warming mode function, thereby enabling energy saving and can be used as a heat source device for home use, for example. .

DESCRIPTION OF SYMBOLS 1 Bath remote control apparatus 2 Kitchen remote control apparatus 5 Liquid circulation path for heating 6 Liquid circulation pump 7 Liquid-liquid heat exchanger 10 Heating apparatus 13 Recirculation circulation path 16, 17 Burner 20 Bath hot water circulation pump 21 Bath temperature sensor 22 Water level sensor 28 Heat exchanger for heating 33 Heating high temperature thermistor 36 Heating low temperature thermistor 60 Control means 62 Person bathing detection means 63 Bathing person presence / absence judging means 64 Liquid circulation mode switching means for reheating 65 Combustion control means

Claims (5)

  A heating liquid circulation passage that circulates liquid and supplies the heating device and a recirculation circulation passage connected to the bathtub, and the recirculation circulation passage is connected to the heating liquid circulation passage via heat exchange means. A liquid circulation pump for circulating the liquid in the heating liquid circulation passage, and a heating heat exchanger for heating the liquid circulated by driving the liquid circulation pump. The recirculation circulation passage is provided with a bathtub hot water circulation pump that circulates the bathtub hot water. Upon receiving the reheating instruction of the bathtub hot water, the heating heat exchanger replaces the hot water circulation passage in the heating liquid circulation passage. By circulating the liquid while heating and circulating the hot water in the bathtub through the recirculation circulation passage, heat exchange is performed between the hot water and the liquid circulating in the heating liquid circulation passage through the heat exchange means. And a function of a high-temperature liquid circulation mode in which the liquid passing through the heating liquid circulation passage is circulated as a predetermined high-temperature set temperature, and the heating liquid circulation. A bather having a function of a low-temperature liquid circulation mode for circulating a liquid passing through a passage as a predetermined low-temperature set temperature lower than the high-temperature set temperature, and determining whether there is a bather when the bath water is replenished When it is determined that there is a bather by the presence / absence determining means and the bather presence / absence determining means, the liquid is circulated in the high-temperature liquid circulation mode and the bather presence / absence determining means bathes. When the bath water is refilled when it is determined that there is no person, the mode is switched to circulate the liquid in the low temperature liquid circulation mode. Heat source apparatus characterized by having a liquid circulation mode switching means when reheating perform instead.   A water level sensor for detecting the water level of the bath water, and a human bath detection means for detecting that a person is bathing in the bathtub based on the detected water level of the water level sensor, It is determined that there is a bather when the bathing of the person into the bathtub is detected by the detection means, and it is determined that there is no bather when the bathing of the person into the bathtub is not detected by the bathing detection means. The heat source device according to claim 1, characterized in that:   A remote control device in the bathroom and a remote control device in the kitchen are signal-connected to the heat source device, and the bather presence / absence determining means is provided when the bather retreats the bath water by the remote control device in the bathroom. 3. The heat source device according to claim 1, wherein it is determined that there is no bather when the remote control device arranged in the kitchen issues a bath water hot-water command. 4.   The bath hot water temperature detecting means for detecting the temperature of the hot water in the bathtub has a temperature detected by the bathtub hot water temperature detecting means when the liquid is circulated in the low temperature liquid circulation mode. When the temperature is lower than the set approach temperature lower than the set bath set temperature, the liquid is circulated by switching to the high temperature liquid circulation mode, and the hot liquid is detected until the temperature detected by the bath water temperature detecting means reaches the set approach temperature. The heat source device according to claim 1, wherein the liquid is circulated by switching to the low-temperature liquid circulation mode after the liquid is circulated in the circulation mode.   The heating liquid circulation passage is connected to a high-temperature heating device to which a liquid having a predetermined high-temperature heating set temperature is supplied, and the reheating liquid circulation mode switching means is operated in the high-temperature liquid circulation mode during operation of the high-temperature heating device. The heat source apparatus according to any one of claims 1 to 4, wherein a liquid is circulated as a heat source.

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