JP2013167403A - Hot water-utilizing hot air generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water-utilizing hot air generation device which can be operated according to intention of a user having a high ecological consciousness.SOLUTION: A hot water-utilizing hot air generation device, which receives supply of hot water of a first temperature required in a normal operation state from a hot water supply apparatus 2 and generates hot air based on an operation instruction input to a controller R, has an ecological operation switch, which accepts an ecological operation instruction as an operation instruction in an ecological operation state as an operation state getting out of the normal operation state, on the controller R, and is configured to permit actuation in such an ecological operation state as to receive supply of hot water of a temperature different from the first temperature and generate hot air with the hot water, when accepting the ecological operation instruction.

Description

  The present invention relates to an apparatus for generating hot air using hot water that receives hot water having a predetermined temperature from outside and generates hot air using the hot water.

  There is a hot water using hot air generator that generates hot air using hot water supplied from the outside at a predetermined temperature, and a typical example of this type of hot water using hot air generator is bathroom heating and drying. The machine is known. The bathroom heater / dryer has a heating function in the bathroom, a drying function, a ventilation function, a mist sauna function, and an additional dressing room heating function. Normally, such a hot water generating hot air generator operates by receiving high-temperature hot water (80 ° C.) supplied from a water heater that burns fuel and generates hot water using the combustion heat. Examples of hot water sources include those that use hot water obtained by recovering exhaust heat exhausted from heat source equipment such as engines and fuel cells, and that collect hot energy from natural energy such as solar heat to produce hot water. Some use it.

In the case of a system that recovers and uses the former waste heat as hot water, generally, the exhaust heat discharged from the heat source machine is recovered as hot water of about 60 ° C., and the hot water is stored in a hot water storage tank. And it is utilized by the warm water utilization warm air generator side by paying out warm water timely as needed. In this system, the temperature of the hot water stored in the hot water storage tank is lower than the original required temperature (80 ° C) of the hot water using hot air generator. A configuration for supplying to the hot air generator is adopted.
In the case of using the hot water obtained by the latter heat collection, if the temperature of the hot water is lower than the required temperature of the hot water using hot air generator, the temperature is raised by a device such as an auxiliary heat source device and supplied.

  Patent Document 1 also describes a hot water supply device that includes a main hot water generating device that generates hot water and an auxiliary heat source device that can further heat the hot water generated by the main hot water generating device. As an auxiliary heat source machine, what heats up warm water with the combustion heat of a combustor is described. And in this warm water supply apparatus, the warm water produced | generated by operating at least an auxiliary heat source machine is supplied to an air conditioning use, a hot water supply, and a bath use.

JP 2001-296055 A

However, the temperature of the hot water required for operating the hot water generating hot air generator is set from the viewpoint of sufficiently ensuring the comfort and convenience of the device user. The hot water temperature is often on the safe side (high temperature side).
Such a hot water temperature on the high temperature side is set as the lowest temperature for operating the hot water generating hot air generator in the most stable state with high comfort and convenience. However, for example, if the user using the hot water generating hot air generator can accept a little inconvenience from the viewpoint of energy saving, it is better that the operation according to the user's intention is possible.
Furthermore, as described in Patent Document 1, at least in the case of adopting a system that collects the exhaust heat as warm water or a system that uses the collected heat as warm water as a warm water supply device, The auxiliary heat source unit will be operated to consume fuel, and this will be reversed from the viewpoint of energy saving. That is, it is preferable from the viewpoint of energy saving to use the warm water originally generated or held as it is without operating the auxiliary heat source machine.

  This invention is made | formed in view of said subject, The objective is to provide the hot water utilization warm air generator which can be operated according to the intention of the user with high energy saving consciousness.

  In order to achieve the above object, the hot water hot air generator according to the present invention is configured to receive hot water at a first temperature from a hot water supply device based on an operation command input to the controller. A hot water generating hot air generator that is operable in a normal operation state that generates hot air with hot water, and is an eco operation that is an operation command in an eco operation state that is an operation state that is out of the normal operation state to the controller An eco-operation switch that accepts an instruction is provided, and when the eco-operation instruction is accepted, it can be operated in an eco-operation state in which hot water having a temperature different from the first temperature is supplied and hot air is generated with the hot water. It is in the point which is comprised.

According to the above characteristic configuration, when the eco-driving instruction is not received, the hot water using hot air generating device is necessary in the normal operation state, that is, is set in advance in consideration of, for example, convenience and comfort. Since the supply of the hot water at the first temperature can be received from the hot water supply device, it is possible to provide hot air with high convenience and comfort. On the other hand, when the eco-driving instruction is received, the hot water using hot air generating device receives supply of hot water having a temperature different from the first temperature from the hot water supply device, and generates hot air with the hot water. To do. That is, since it is not necessary to ensure that the temperature of the hot water is the first temperature, the energy consumed to make the temperature of the hot water the first temperature can be reduced.
Therefore, it is possible to provide a warm water use hot air generator that can be operated according to the intention of a user with high energy saving awareness.

  Another characteristic configuration of the hot water generating hot air generator according to the present invention is that the temperature different from the first temperature is a second temperature lower than the first temperature, and the supply of the hot water at the second temperature is In addition to instructing the hot water supply device, the hot water supply at the second temperature is supplied, and hot air is generated by the hot water at the second temperature.

  According to the above characteristic configuration, when the eco-driving instruction is received, the hot water using hot air generator receives the supply of the hot water at the second temperature that is lower than the first temperature, and heats the hot water. Can be used to generate hot air. That is, the hot air generated using the heat of the hot water at the second temperature lower than the first temperature required in the normal operation state is more convenient than the hot air generated using the heat of the hot water at the first temperature. Although energy and comfort are low, energy saving is high. Therefore, warm air can be supplied to the user while ensuring a certain degree of convenience and comfort while placing importance on energy saving.

  Still another characteristic configuration of the hot water using hot air generator according to the present invention is that the hot water supply device generates a main hot water generating device that generates hot water and an auxiliary heat source device that can further heat the hot water generated by the main hot water generating device. In response to the normal operation state, hot water heated to the first temperature is supplied by the auxiliary heat source unit, and in response to the eco operation state, without operating the auxiliary heat source unit, The hot water having the second temperature generated by the main hot water generator is supplied.

  According to the above characteristic configuration, the warm water at the second temperature is raised to the first temperature using the auxiliary heat source device in the normal operation state and then supplied to the hot water generating hot air generator, and the auxiliary heat source device is operated in the eco operation state. The hot water generated by the main hot water generator without being used is supplied to the hot water hot air generator at the same temperature (that is, the second temperature). That is, since the auxiliary heat source unit is not used in the eco-operation state, the energy consumption of the auxiliary heat source unit that has been generated in the normal operation state can be reduced.

Still another characteristic configuration of the hot water generating hot air generator according to the present invention is as follows:
When the acceptance of the eco-operation command is not confirmed, an operation permission command for the auxiliary heat source machine is output and the hot water supply device is commanded to supply hot water at the first temperature, and the hot water at the first temperature is Receiving the supply and operating in the normal operation state,
When the acceptance of the eco-operation command is confirmed, an operation prohibition command for the auxiliary heat source unit is output, the hot water supply device at the second temperature is instructed to the hot water supply device, and the hot water supply at the second temperature is supplied And is operated in the eco-driving state.

According to the above characteristic configuration, when the acceptance of the eco operation command is not confirmed, that is, when the operation in the normal operation state is requested, the operation permission command of the auxiliary heat source unit is output and the hot water is supplied by the auxiliary heat source unit. It is possible to receive supply of hot water at the first temperature from the hot water supply device after the temperature is raised.
On the other hand, when the acceptance of the eco operation command is confirmed, that is, when the operation in the eco operation state is requested, the warm water is not heated by outputting the operation prohibit command of the auxiliary heat source machine. In this way, energy consumption in the auxiliary heat source machine can be reduced.

  Still another characteristic configuration of the hot water generating hot air generating device according to the present invention is that the main hot water generating device collects heat discharged from a heat source device or collects heat from natural energy to generate hot water having the second temperature. It is in that it is a device that obtains.

  According to the said characteristic structure, the main warm water production | generation apparatus can obtain the warm water of 2nd temperature by collect | recovering the heat discharged | emitted from a heat source machine, or collecting from natural energy. As a result, the hot water at the second temperature can be supplied from the hot water supply device to the hot water using hot air generator without operating the auxiliary heat source device. Moreover, energy-saving property can be improved by effectively using the heat collected from natural energy.

  Still another characteristic configuration of the hot water generating hot air generator according to the present invention is that the main hot water generating device has the second temperature obtained by collecting heat discharged from a heat source device or collecting heat from natural energy. The hot water is stored in the hot water storage tank, and the hot water of the second temperature is supplied from the hot water storage tank upon receipt of the hot water supply command.

  According to the said characteristic structure, the main warm water production | generation apparatus can obtain the warm water of 2nd temperature by collect | recovering the heat discharged | emitted from a heat source machine, or collecting from natural energy. As a result, the hot water at the second temperature can be supplied from the hot water supply device to the hot water using hot air generator without operating the auxiliary heat source device. Further, the hot water at the second temperature is temporarily stored in the hot water storage tank, and the hot water at the second temperature is supplied in accordance with the demand timing of the hot water, so that the hot water can be effectively used.

  Still another characteristic configuration of the hot water hot air generator according to the present invention is such that the hot water supply device generates and supplies hot water having the first temperature or the second temperature with heat generated by fuel combustion. In that point.

  According to the above characteristic configuration, the temperature of the generated hot water can be adjusted to the first temperature and the second temperature by adjusting the amount of heat generated by the combustion of the fuel.

  Still another characteristic configuration of the hot water generating hot air generating apparatus according to the present invention includes hot water temperature detecting means for detecting a temperature of hot water supplied from the hot water supply device, and hot water detected by the hot water temperature detecting means. An operation state switching means for switching the operation state between the normal operation state and the eco operation state with reference to the temperature is provided.

If the temperature of the hot water supplied from the hot water supply device is high, the comfort and convenience of the hot air that can be generated using the hot water is increased. Conversely, the lower the temperature of the hot water supplied from the hot water supply device, the lower the comfort and convenience of warm air that can be generated using the hot water. Therefore, when an eco-operation instruction is received and an attempt is made to operate the hot water generating hot air generator in an eco-operating state, if the temperature of the hot water supplied from the hot water supply device is too low, it can be generated using the hot water. The comfort and convenience of the warm air that can be made will be very low.
However, in this feature configuration, the hot water temperature detected by the hot water temperature detecting means is referred to when the operation state is switched between the normal operation state and the eco operation state. As a result, for example, when the temperature of the hot water supplied from the hot water supply device is too low, even if an eco-operation instruction is received, the hot-water-use hot air generator is not operated in the eco-operation state, thereby improving comfort. In addition, it is possible to perform control such as avoiding the generation of warm air which is very low in convenience.

It is a figure which shows the structure of a hot water utilization system. It is a figure which shows the structure of the hot water supply apparatus of 1st Embodiment. It is a figure explaining switch arrangement of a remote control device. It is a flowchart of switching control of the normal operation state and eco-operation state of 1st Embodiment. It is a flowchart of switching control of the normal operation state and eco-operation state of 2nd Embodiment. It is a figure which shows the structure of the hot water supply apparatus of 3rd Embodiment. It is a figure which shows the structure of the hot water supply apparatus of another embodiment. It is a figure explaining switch arrangement of a remote control device of another embodiment.

<First Embodiment>
Hereinafter, the warm water utilization hot air generator of 1st Embodiment is demonstrated with reference to drawings.
FIG. 1 is a diagram illustrating a configuration of a hot water use system including a hot water use hot air generator and a hot water supply device. FIG. 2 is a diagram illustrating a configuration of the hot water supply device.
The hot water using hot air generator receives the supply of hot water at the first temperature from the hot water supply device 2 based on the operation command input to the remote controller R as a controller capable of inputting various control commands, and the hot water It is a device that can be operated in a normal operation state that generates warm air.

  A specific configuration example of the hot water hot air generator will be described. The device main body 1 of the hot water hot air generator has a circulation fan 7 for circulating air in the bathroom 4, and the circulation fan 7 ventilates the air. Air-conditioning heat exchanger 8 for heating the air, ventilation fan 9 for ventilating the bathroom 4, two mist nozzles 11 for ejecting mist water supplied through the water supply channel 10 into the mist in the bathroom 4 and the like Is installed in the main body casing 12. The apparatus main body 1 is disposed behind the ceiling of the bathroom 4. The grill plate 13 is installed below the main body casing 12 so as to be positioned on the surface side of the ceiling of the bathroom 4 with the main body casing 12 entering the back side of the ceiling plate 6 of the bathroom 4.

The grill plate 13 is provided with an air inlet 14 and an air outlet 15 in parallel. A circulation ventilation path 16 is formed in the main body casing 12 for sucking air in the bathroom 4 through the air inlet 14 and blowing it out through the air outlet 15. The circulation fan 7 is provided in the circulation ventilation path 16 in such a state that the air in the bathroom 4 sucked to the air inlet 14 and sucked from the air inlet 14 is blown out from the air outlet 15 into the bathroom 4. It has been. Further, an air conditioning heat exchanger 8 is provided in the circulation ventilation path 16 upstream of the circulation fan 7 in the ventilation direction, and heat exchange with the hot water circulated and supplied from the hot water supply device 2 is performed in the circulation ventilation path 16. It is comprised so that the air which ventilates may be heated.
As described above, the hot water generating hot air generating device sucks the air in the bathroom 4 through the air inlet 14 by the ventilation action of the circulation fan 7, heats the air in the heat exchanger 8 for air conditioning, and passes through the air outlet 15 to the bathroom 4. It is configured to be able to perform a heating operation that blows out and heats the inside of the bathroom 4.

The forward path 18 of the heat medium circulation path 17 to which hot water is supplied from the hot water supply device 2 installed outside the bathroom 4 is branched into two heat medium branch paths 19 and 20. One of the heating medium branch paths 20 is connected to the air conditioning heat exchanger 8, and the downstream side of the air conditioning heat exchanger 8 in the heating medium branch path 20 is connected to the return path 21 of the heating medium circulation path 17. The hot water heated by the hot water supply device 2 is circulated and supplied to the air conditioner heat exchanger 8 through the heat medium circulation path 17. In the middle of the heat medium branch path 20, a thermal valve 22 is provided that can freely and intermittently supply hot water to the air conditioner heat exchanger 8 by opening and closing the flow path of the heat medium branch path 20.
The other heat medium branch path 19 is provided with a heat medium flow rate adjustment valve 39 that can freely connect / disconnect the heat medium branch path 19 and change and adjust the flow rate of hot water to the heat exchanger 29.
In addition, the forward path 18 of the heat medium circulation path 17 is provided with a heat medium thermistor 5 as hot water temperature detection means for detecting the temperature of the flowing hot water.

  A bathroom temperature thermistor 23 that detects the temperature of the flowing air as the temperature in the bathroom 4 is provided at a location upstream of the air conditioning heat exchanger 8 in the circulation ventilation path 16. The blower outlet 15 is provided with a movable louver 24 that is oscillated and driven by an electric motor (not shown), and the movable louver 24 can change the blowing direction of the air blown into the bathroom 4 from the blower outlet 15. .

The ventilation fan 9 is provided in the main body casing 12 so as to exhaust the air in the bathroom 4 sucked from the air inlet 14 to the outside through the exhaust duct 25. Due to the ventilation action of the ventilation fan 9, the air in the bathroom 4 is discharged to the outside through the exhaust duct 25, and the bathroom 4 is ventilated.
Two mist nozzles 11 are supported at a portion of the grill plate 13 between the air inlet 14 and the air outlet 15 with the hot water jetting direction downward.

  A hot water generating unit 26 for generating hot water for mist and supplying it to the mist nozzle 11 is provided on the upper portion of the main casing 12. The hot water generating unit 26 supplies hot water to a mist casing 27 through which a mist water is supplied from a water supply or the like, a water supply valve 28 that opens and closes the water supply passage 10, and mist water supplied from the water supply path 10. A heat exchanger 29 that is heated by heat exchange with the hot water circulated and supplied from the device 2, a lower-side passage 30 through which water for mist supplied from the water supply channel 10 and heated by the heat exchanger 29 flows, A drainage valve 32 that opens and closes the flow path of the drainage channel 31 branched from the lower side flow path 30, a hot water thermistor 33 for mist that detects the temperature of hot water flowing through the lower side flow path 30, and the like are provided.

  A mist supply path 34 different from the drainage path 31 is branched from the lower side flow path 30, and the mist supply path 34 is piped in a state extending to the inside of the main body casing 12. The mist supply path 34 is further branched into two branch paths 35 and 36 along the path, and these branch paths 35 and 36 are connected to the mist nozzles 11, respectively. The two branch passages 35 and 36 are provided with mist opening and closing valves 37 and 38, respectively, that can freely and intermittently supply hot water to the mist nozzles 11 by opening and closing the passages.

  As described above, the water for mist supplied from the water supply passage 10 is heated by the heat exchanger 29, and the heated warm water is supplied to the mist nozzle 11 through the lower side passage 30 and the mist supply passage 34. It is comprised so that the mist sauna driving | operation which ejects warm water in the mist form from the mist nozzle 11 in the bathroom 4 can be performed.

  When the mist sauna operation has not been performed for a long time since the last time the mist sauna operation was performed, the drainage channel 31 is contaminated that has accumulated in the water supply channel 10 or the internal piping of the heat exchanger 29. It is for discharging water for mist to the outside. The drainage treatment using the drainage channel 31 is performed by switching the water supply valve 28 and the drainage valve 32 to the open state while maintaining the mist open / close valves 37 and 38 in the closed state.

Next, the configuration of the hot water supply device 2 will be described with reference to FIG.
In the present embodiment, the hot water supply device 2 includes a main hot water generating device 2A and an auxiliary heat source device 2B. The main hot water generator 2 </ b> A includes a heat source device 50 and a heat storage device 60. The heat source device 50 includes an engine 51 and a generator 52 driven by the engine 51. The electricity generated by the generator 52 is supplied to a power consuming device (not shown).

  The engine 51 is configured to be cooled by engine cooling water. In the present embodiment, the engine coolant circulates through the engine 51 and the heat exchanger 53 in order through the coolant circulation path 54. A cooling water pump 55 is provided in the middle of the cooling water circulation path 54, and the flow rate of the engine cooling water in the cooling water circulation path 54 is adjusted according to the operation of the cooling water pump 55. In the heat exchanger 53, heat is transferred from the engine cooling water to the hot water by exchanging heat between the relatively low-temperature hot water described later and the engine cooling water.

  The heat storage device 60 has a hot water storage tank 61 that collects and stores the exhaust heat from the heat source device 50. The hot water storage tank 61 stores hot water, which is heated by the heat exchanger 53 through the hot water circulating hot water circulation path 62 and returns to the hot water storage tank 61 again. In the present embodiment, the hot water storage tank 61 stores hot water having a relatively high temperature in the upper part thereof, and stores hot water having a relatively low temperature in the lower part thereof so that temperature stratification is formed inside the hot water storage tank 61. It is configured. A hot water circulation pump 63 is provided in the hot water hot water circulation path 62, and the flow rate of the hot water in the hot water hot water circulation path 62 is adjusted according to the operation of the hot water circulation pump 63. Specifically, if the flow rate of the hot water in the hot water circulation path 62 for hot water storage is reduced, that is, if the flow rate of the hot water passing through the heat exchanger 53 per unit time is reduced, the temperature of the hot water after passing through the heat exchanger 53 Is relatively high. On the other hand, if the flow rate of the hot water in the hot water circulation path 62 for hot water storage is increased, that is, if the flow rate of the hot water passing through the heat exchanger 53 per unit time is increased, the temperature of the hot water after passing through the heat exchanger 53 Is relatively low. For example, in the hot water storage tank 61, the operation of the hot water circulation pump 63 is controlled so that hot water of 60 ° C. is stored, and the exhaust heat recovery operation is performed.

  The auxiliary heat source unit 2B is a device that consumes fuel to generate heat and raises the temperature of the hot water with the heat. The auxiliary heat source unit 2B includes a combustor 72 that combusts gas as fuel, a flow rate adjustment valve 70 that adjusts the amount of gas supplied to the combustor 72, and a blower 71 that supplies oxygen (air) to the combustor 72. Is provided. Further, the forward path 18 of the heat medium circulation path 17 through which the hot water sent from the hot water storage tank 61 by the hot water delivery pump 64 flows is drawn into the auxiliary heat source machine 2B. The forward path 18 of the heat medium circulation path 17 flows through the inside of the heat exchanger 73 provided in the auxiliary heat source unit 2B. Further, the heat exchanger 73 is given combustion heat generated in the combustor 72. As a result, the temperature of the hot water flowing through the forward path 18 of the heat medium circulation path 17 is raised by the combustion heat generated in the combustor 72. The amount of heat given from the combustor 72 to the hot water flowing in the forward path 18 of the heat medium circulation path 17 changes according to the amount of combustion heat generated in the combustor 72. That is, by adjusting the amount of gas and the amount of air supplied to the combustor 72, the amount of heat applied to the hot water flowing in the forward path 18 of the heat medium circulation path 17 can be adjusted. For example, the amount of gas and the amount of air supplied to the combustor 72 are adjusted so that the temperature of the hot water thermistor 74 provided in the outward path 18 downstream of the heat exchanger 73 becomes a predetermined temperature.

  FIG. 3 is a diagram illustrating the switch arrangement of the remote control device. The remote controller R as a controller of the present invention includes a timer display unit 40 for displaying a timer time for driving, a mist sauna driving switch 41 for instructing mist sauna driving, and a timer setting switch for changing and setting the driving timer time. 42, a wind direction switch 43 for instructing a change in the blowing direction of the movable louver 24, a drying operation switch 44 for instructing a drying operation, a heating operation switch 45 for instructing a heating operation for heating the bathroom 4, and a ventilation for operating the ventilation fan 9 A ventilation operation switch 46 for instructing operation, a cool air operation switch 47 for instructing cool air operation for operating the circulation fan 7, a stop switch 48 for stopping each operation, and the like are provided. Further, as will be described later, the remote control device R is provided with an eco-operation switch 49 for giving an operation command in an eco-operation state that is an operation state deviating from the normal operation state.

  In addition, various lamps that are turned on when the operation switches 41, 44, 45, 46, 47, 49 are in the ON operation state (mist sauna operation lamp 41a, drying operation lamp 44a, heating operation lamp 45a, ventilation operation lamp) 46a, a cool wind operation lamp 47a, and an eco operation lamp 49a) are provided adjacent to the operation switches.

  Hereinafter, each operation of the heating operation, the ventilation operation, the drying operation, the cool air operation, and the mist sauna operation of the hot water hot air generator will be briefly described.

[Heating operation]
The heating operation of the hot-water hot-air generator is an operation in which air in the bathroom 4 is taken in and heated, and then the heated air is blown into the bathroom 4. Specifically, the ventilation fan 9 is stopped and the circulation fan 7 is operated, and hot water is supplied from the hot water supply device 2 to the hot water generating hot air generator, so that the hot air temperature at the outlet 15 is set to the set temperature. The hot water is circulated and supplied to the heat exchanger 8 for air conditioning by controlling the opening and closing of the thermal valve 22 and the hot water supply operation of the hot water supply device 2 so as to be maintained in the range. As a result, the circulating air heated by the air conditioner heat exchanger 8 is blown into the bathroom 4 from the blowout port 15. As described above, the hot water generating hot air generating device receives the supply of hot water from the hot water supply device 2 and generates hot air in the heating operation. Further, the operation state of the circulation fan 7 is adjusted so that the ventilation amount of the air ventilated in the bathroom 4 becomes the ventilation amount for heating, and the movable louver 24 is swung.

[Ventilation operation]
The ventilation operation is an operation in which air sucked from the bathroom 4 is exhausted from the exhaust duct 25. Specifically, the ventilation fan 9 is operated while the operation of the circulation fan 7 is stopped and the thermal valve 22 is kept closed. Further, the operating state is adjusted so that the movable louver 24 is closed.

[Dry operation]
The drying operation is performed, for example, while discharging a part of the air sucked from the inside of the bathroom 4 as a drying space in which a drying object such as clothes containing moisture is arranged after taking a bath to the outside through the exhaust duct 25. In this operation, the remaining air is heated by the air conditioner heat exchanger 8 and then blown into the bathroom 4 from the outlet 15. Specifically, by operating the circulation fan 7 and supplying hot water from the hot water supply device 2 to the hot water using hot air generator, the hot air temperature at the outlet 15 is maintained within the set temperature range. By controlling the opening and closing of the thermal valve 22 and the hot water supply operation of the hot water supply device 2, the hot water is circulated and supplied to the air conditioner heat exchanger 8 and the ventilation fan 9 is operated.

(Cool wind driving)
The cool air operation is an operation in which the air sucked from the bathroom 4 is blown out into the bathroom 4 through the circulation ventilation path 16 without being heated. Specifically, the circulation fan 7 is operated with the thermal valve 22 kept closed, and the ventilation fan 9 is operated so that a part of the air sucked from inside the bathroom 4 is taken outdoors through the exhaust duct 25. In this operation, the remaining air is blown out into the bathroom 4 through the circulation ventilation path 16 without being heated. Moreover, the direction of the movable louver 24 is adjusted so that the blowing direction of the air into the bathroom 4 becomes the set blowing direction for the cool wind operation.

[Mist sauna operation]
The mist sauna operation is an operation of spraying mist in the bathroom 4 while performing the heating operation in the bathroom 4. Specifically, the ventilation fan 9 is stopped and the circulation fan 7 is operated, and hot water is supplied from the hot water supply device 2 to the hot water generating hot air generator, so that the hot air temperature at the outlet 15 is set to the set temperature. The hot water is circulated and supplied to the heat exchanger 8 for air conditioning by controlling the opening and closing of the thermal valve 22 and the hot water supply operation of the hot water supply device 2 so as to be maintained in the range. As a result, the same heating operation as described above is performed. Furthermore, the opening / closing control of the water supply valve 28 for adjusting the amount of water supplied to the mist nozzle 11 and the flow rate of hot water to the heat exchanger 29 where the temperature of the water supplied to the mist nozzle 11 is raised are adjustable. The open / close control of the heat medium flow control valve 39 is performed, and the heated water is sprayed from the mist nozzle 11 into the bathroom 4 so that the mist sauna operation is performed.

[Normal driving condition and Eco driving condition]
Of the heating operation, ventilation operation, drying operation, cool air operation, and mist sauna operation as described above, in the heating operation, drying operation, and mist sauna operation, hot water is supplied from the hot water supply device 2 to the hot water using hot air generator. It is necessary to generate warm air by discharging the heat of the hot water with the heat exchanger 8 for air conditioning. Therefore, the temperature of the hot water supplied from the hot water supply device 2 to the hot water using hot air generator is important for improving the comfort and convenience of heating operation, drying operation, and mist sauna operation.
When the operation control unit 3 detects that the eco-operation switch 49 is turned on by the remote control device R during the heating operation, the drying operation, and the mist sauna operation, the operation control unit 3 sets the operation mode of the hot water using hot air generating device as the operation mode. It is determined that the eco driving state has been commanded. The eco driving switch 49 is a switch for accepting an eco driving command that is a driving command in an eco driving state that is a driving state deviating from the normal driving state. On the other hand, the operation control unit 3 uses hot water while it is not detected that the eco-operation switch 49 is turned on by the remote control device during the heating operation, the drying operation, and the mist sauna operation. It is determined that the normal operation state has been commanded as the operation mode of the hot air generator. In the state where the eco-operation switch 49 is turned ON first and the eco-operation lamp 49a is lit, the heating operation switch 45, the drying operation switch 44, The mist sauna operation switch 41 may be instructed.
Hereinafter, the normal operation state and the eco operation state will be described.

  When the normal operation state is instructed, the operation control unit 3 instructs the hot water supply device 2 to supply the hot water having the first temperature required by the hot water using hot air generator in the normal operation state. In the present embodiment, the first temperature is 80 ° C.

On the other hand, the hot water using hot air generator receives the supply of hot water having a temperature different from the first temperature when receiving an eco operation command, and generates hot air with the hot water in an eco operation state. Operate.
In the present embodiment, as shown in FIG. 2, the source of hot water supplied to the hot water using hot air generator is the hot water storage tank 61 of the main hot water generating device 2 </ b> A. Hot water that recovered heat is stored. For example, when hot water having a predetermined temperature (for example, a second temperature (60 ° C.) different from the first temperature (80 ° C.)) is stored in the hot water storage tank 61 as described above, the hot water is used from the hot water storage tank 61. Hot water at a predetermined temperature can be supplied to the hot air generator. That is, it is ensured that the temperature of the hot water supplied to the hot water using hot air generator is relatively high even if the temperature of the hot water is not raised to the first temperature (80 ° C.) by the auxiliary heat source device 2B. Therefore, although there is a possibility that comfort and convenience may be insufficient, the hot water is not heated up to the first temperature by the auxiliary heat source unit 2B, but supplied to the hot water using hot air generator, and from the first temperature. In addition, heating operation, drying operation, and mist sauna operation can be performed using low-temperature hot water. In this way, the operation control unit 3 responds to the eco-operation state without using the auxiliary heat source unit 2B and supplies hot water having a temperature that is still stored in the hot water storage tank 61 to the hot water using hot air generator. Supply. That is, the operation control unit 3 confirms reception of the eco operation command, outputs an operation prohibition command for the auxiliary heat source device 2B, and raises the temperature of the hot water supplied from the hot water storage tank 61 to the first temperature. When the acceptance of the eco-driving instruction is confirmed, the hot water supply device 2 is instructed to supply the hot water at the second temperature, and the hot water at the second temperature is supplied to the hot water using hot air generator. To the hot water supply device 2.
As described above, when the acceptance of the eco-operation command is confirmed, the hot-water hot-air generator outputs the operation prohibition command for the auxiliary heat source unit 2B and instructs the hot water supply device 2 to supply the hot water at the second temperature. In addition, when the operation is performed in the eco-operation state with the supply of the hot water at the second temperature and the acceptance of the eco-operation command is not confirmed, the operation permission command for the auxiliary heat source machine 2B is output and the hot water at the first temperature It operates in the normal operation state with the supply of.

Next, switching control between the normal operation state and the eco operation state will be described. FIG. 4 is a flowchart of switching control between the normal operation state and the eco operation state performed by the operation control unit 3.
When the heating control switch 45, the drying operation switch 44, or the mist sauna operation switch 41 is turned ON, the operation control unit 3 starts any of the heating operation, the drying operation, and the mist sauna operation. The operation state switching control shown in FIG. 4 is performed. Specifically, in step # 10, the operation control unit 3 starts supplying hot water from the hot water supply device 2 when detecting that the operation switch is turned ON. However, the operation control unit 3 stops the operation of the auxiliary heat source unit 2B. Next, in step # 12, the operation control unit 3 determines whether or not the eco operation switch 49 has been turned ON within the set time. Then, the operation control unit 3 proceeds to step # 14 when the eco-operation switch 49 is turned on, and proceeds to step # 16 when the eco-operation switch 49 is not operated.

In step # 14, the operation control unit 3 responds to the ON operation of the eco-operation switch 49 (that is, accepts the eco-operation command), as described above, hot water having a temperature different from the first temperature. The hot water using hot air generator is operated in an eco-operating state where the hot water is supplied and the hot water is generated.
On the other hand, in step # 16, the operation control unit 3 starts the operation of the auxiliary heat source unit 2B in response to the eco-operation switch 49 not being turned on (that is, receiving the normal operation command), In step # 18, the hot water generating hot air generator is operated in a normal operation state where the hot water having the first temperature is supplied and hot air is generated by the hot water having the first temperature.

  As described above, when the eco-driving instruction is not received, the hot water using hot air generating device is necessary in the normal operation state, that is, for example, the first preset in consideration of convenience and comfort. Since the supply of hot water at one temperature can be received from the hot water supply device 2, hot air with high convenience and comfort can be provided. On the other hand, when the eco-operation instruction is received, the hot water using hot air generator receives the supply of hot water at a temperature different from the first temperature (for example, the second temperature) from the hot water supply device 2. The hot water generates warm air. That is, since it is not necessary to ensure that the temperature of the hot water is the first temperature, the energy consumed to make the temperature of the hot water the first temperature can be reduced.

Second Embodiment
In the above-described embodiment, the example in which the operation control unit 3 performs the switching control between the normal operation state and the eco operation state based on only whether or not the eco operation switch 49 is turned on has been described. Based on this, switching control between the normal operation state and the eco operation state may be performed. As will be described below, the hot water generating hot air generator according to the present embodiment includes a heat medium thermistor 5 (an example of hot water temperature detection means) that detects the temperature of hot water supplied from the hot water supply device 2 and heat. With reference to the hot water temperature detected by the medium thermistor 5, an operation control unit 3 (an example of an operation state switching unit) that switches the operation state between the normal operation state and the eco operation state is provided. Hereinafter, switching control between the normal operation state and the eco operation state performed by the operation control unit 3 will be described.

FIG. 5 is a flowchart of switching control between the normal operation state and the eco operation state according to the second embodiment.
When the heating control switch 45, the drying operation switch 44, or the mist sauna operation switch 41 is turned ON, the operation control unit 3 starts any of the heating operation, the drying operation, and the mist sauna operation. The operation state switching control shown in FIG. 5 is performed. Specifically, in step # 20, the operation control unit 3 starts supplying hot water from the hot water supply device 2 when detecting that the operation switch has been turned ON. However, the operation control unit 3 stops the operation of the auxiliary heat source unit 2B. Next, in step # 22, the operation control unit 3 determines whether or not the state where the detected temperature of the heat medium thermistor 5 that detects the temperature of the hot water supplied from the hot water supply device 2 is 58 ° C. or more continues for 5 seconds or more. Judgment is made. Then, the operation control unit 3 proceeds to step # 24 when the state in which the detected temperature of the heat medium thermistor 5 is 58 ° C. or more continues for 5 seconds or more, and the detected temperature of the heat medium thermistor 5 is 58 ° C. When the above state is not continuous for 5 seconds or more, the process proceeds to step # 28.

Here, the state in which the detected temperature of the heat medium thermistor 5 is 58 ° C. or higher in Step # 22 is continuous for 5 seconds or more from the hot water supply device 2 without operating the auxiliary heat source device 2B. It means that hot water of about 2 temperatures (60 ° C.) can be stably supplied.
On the other hand, the state in which the detected temperature of the heat medium thermistor 5 is 58 ° C. or higher is not continuous for 5 seconds or more is that the second heat source device 2 does not operate when the auxiliary heat source device 2B is not operated. It means a state where hot water of temperature cannot be supplied stably. In this case, when accepting an eco-operation instruction and trying to operate the hot-water hot-air generator in an eco-operation state, the temperature of the hot water supplied from the hot water supply device is too low, so that it is generated using that hot water. The comfort and convenience of warm air that can be used will be very low.

  Therefore, when the state where the detected temperature of the heat medium thermistor 5 is 58 ° C. or higher is not continuous for 5 seconds or longer, the operation control unit 3 starts the operation of the auxiliary heat source unit 2B in Step # 28. That is, since even hot water of the second temperature cannot be stably supplied from the hot water supply device 2, the operation control unit 3 forcibly supplies the auxiliary heat source device 2B regardless of whether or not the eco operation switch 49 is turned on. Is operated (step # 28), and the hot water using hot air generator is operated in the normal operation state (step # 30). In this way, even if an eco-driving instruction is received, the hot-water hot air generator is not operated in the eco-operating state (particularly, operating in the normal operating state), so that the warm air of extremely low comfort and convenience can be obtained. Occurrence can be avoided.

  On the other hand, when the detected temperature of the heating medium thermistor 5 is 58 ° C. or higher for 5 seconds or longer, the operation control unit 3 turns on the eco operation switch 49 within the set time in step # 24. It is determined whether or not it has been done. Then, the operation control unit 3 proceeds to step # 26 when the eco-operation switch 49 is turned on, and proceeds to step # 28 when the eco-operation switch 49 is not operated.

In step # 26, the operation control unit 3 responds to the ON operation of the eco-operation switch 49 (that is, accepts the eco-operation command), as described above, hot water having a temperature different from the first temperature. The hot water using hot air generator is operated in an eco-operating state where the hot water is supplied and the hot water is generated. In this case, since hot water having a temperature not less than the second temperature (60 ° C.) different from the first temperature can be stably supplied from the hot water supply device 2, the hot air generated in the hot water using hot air generator is Convenience and comfort will not be significantly reduced.
On the other hand, the operation control unit 3 operates the auxiliary heat source device 2B in step # 28 as described above in response to the eco-operation switch 49 not being turned on (that is, receiving the normal operation command). At the same time, in step # 30, the hot water generating hot air generator is operated in a normal operation state in which hot water of the first temperature is supplied and hot air is generated with the hot water of the first temperature.

<Third Embodiment>
In a warm water utilization system including a warm water utilization warm air generator and a warm water supply device, the configuration of the warm water supply device may be changed. Although the structure of another warm water supply apparatus is demonstrated below, description is abbreviate | omitted about the structure similar to 1st Embodiment.

FIG. 6 is a diagram illustrating a configuration of the hot water supply device.
In the present embodiment, the hot water supply device 2 includes a main hot water generating device 2A and an auxiliary heat source device 2B. The main hot water generator 2 </ b> A includes a solar heat collector 80 that obtains heat using solar heat, which is natural energy. Specifically, the heat collected by the solar heat collector 80 is transmitted to the heat medium flowing through the heat medium circulation path 82. The heat medium circulation path 82 sequentially passes through the solar heat collector 80 and the heat exchanger 84 provided in the hot water storage tank 81. In this heat exchanger 84, heat exchange is performed between the heat medium flowing through the heat medium circulation path 82 and the hot water stored in the hot water storage tank 81. That is, the main hot water generating device 2 </ b> A is configured such that the heat collected by the solar heat collector 80 is transmitted to the hot water stored in the hot water storage tank 81 in the heat exchanger 84.

Also in this embodiment, a hot water circulation pump 83 is provided in the middle of the heat medium circulation path 82, and the flow rate of the hot water in the heat medium circulation path 82 is adjusted according to the operation of the hot water circulation pump 83. Specifically, if the flow rate of the hot water in the heat medium circulation path 82 is lowered, that is, if the flow rate of the hot water passing through the solar heat collector 80 per unit time is reduced, the hot water after passing through the solar heat collector 80 is reduced. The temperature is relatively high. On the other hand, when the flow rate of the hot water in the heat medium circulation path 82 is increased, that is, when the flow rate of the hot water passing through the solar heat collector 80 per unit time is increased, the hot water after passing through the solar heat collector 80 is increased. The temperature is relatively low. For example, in the hot water storage tank 81, the operation of the hot water circulation pump 83 is controlled so that hot water of 60 ° C. is stored, and the exhaust heat recovery operation is performed.
As described above, the main hot water generating device 2A is constituted by the solar heat collector 80, which is a device that collects heat from natural energy and obtains hot water at the second temperature, thereby obtaining the hot water supply device 2 with high energy saving performance. Can do.

<Another embodiment>
<1>
In the first embodiment, in the example in which the hot water supply device 2 includes the main hot water generating device 2A and the auxiliary heat source device 2B, the heat source device 50 provided in the main hot water generating device 2A has the engine 51 as a heat source. However, the configuration can be changed as appropriate. For example, you may comprise so that the heat source apparatus 50 with which the main hot water production | generation apparatus 2A is provided has a fuel cell as a heat source.
As described above, the hot water supply device 2 only needs to be a device that collects heat discharged from a heat source machine (for example, the engine 51 or the fuel cell) to obtain hot water at the second temperature. Alternatively, as described in the third embodiment, the hot water supply device 2 may be a device that collects heat from natural energy and obtains hot water at the second temperature.

  In the above-described embodiment, the example in which the hot water supply device 2 is configured by a plurality of heat sources, that is, the main hot water generation device 2A and the auxiliary heat source device 2B, has been described, but the hot water supply device 2 may be configured by a single heat source. Good. For example, as shown in FIG. 7, the hot water supply device 2 may be configured by only the auxiliary heat source device 2B described above. In this case, the operation control unit 3 is configured so that the temperature of the hot water thermistor 74 provided in the forward path 18 downstream of the heat exchanger 73 is an appropriate temperature (for example, the first temperature and the second temperature described above). By adjusting the amount of gas and the amount of air supplied to the combustor 72, the hot water hot air generator can be operated in the normal operation state and the eco operation state described above. In this case, in step # 10 of the flowchart shown in FIG. 4 and step # 20 of the flowchart shown in FIG. 5, the auxiliary heat source unit 2B is operated to generate the hot water at the second temperature, thereby supplying the hot water supply device. Control to start the hot water supply from 2 may be performed.

<2>
In the said embodiment, although demonstrated by exemplifying the temperature of warm water, the temperature mentioned above can be changed suitably. For example, although the example when the warm water of 2nd temperature was employ | adopted as warm water of the temperature different from 1st temperature received from the warm water supply apparatus 2 when an eco-operation instruction | indication was received, the warm water supply apparatus 2 was demonstrated. You may comprise so that warm water of other temperature may be supplied from. Moreover, although 80 degreeC was mentioned as an example of 1st temperature and 60 degreeC was mentioned as an example of 2nd temperature, you may employ | adopt other temperature as 1st temperature and 2nd temperature.

<3>
In the above-described embodiment, the example in which the special eco-operation switch 49 for receiving the eco-operation command is provided in the remote control device R as a controller capable of inputting various control commands has been described, but the special eco-operation switch is not provided. It may be a configuration. For example, FIG. 8 is a diagram illustrating a switch arrangement of a remote control device according to another embodiment. In this example, the remote control device R is not provided with a special eco-operation switch for accepting the eco-operation command. Instead, for example, when the heating operation switch 45 is turned on again while the heating operation is performed, the operation control unit 3 determines that the ON operation is an input of the eco operation command. Similarly, when the drying operation switch 44 or the mist sauna operation switch 41 is turned ON again while the drying operation or the mist sauna operation is performed, the operation control unit 3 performs the ON operation by inputting an eco operation command. Judge that there is. When the operation control unit 3 receives the eco operation command, the operation control unit 3 turns on the eco operation lamp 49a to inform the user that the hot water using hot air generator is operating in the eco operation state.

  INDUSTRIAL APPLICABILITY The present invention is applicable to a hot water using hot air generator that receives hot water having a predetermined temperature from outside and generates hot air using the hot water.

2 Hot water supply device 2A Main hot water generating device 2B Auxiliary heat source unit 3 Operation control unit (operation state switching means)
5 Heat transfer thermistor (hot water temperature detection means)
49 Eco-operation switch 50 Heat source 61 Hot water storage tank 80 Solar collector R Remote control device (controller)

Claims (8)

A hot water generating hot air generator that can operate in a normal operation state in which hot water of a first temperature is received from a hot water supply device based on an operation command input to the controller and generates hot air with the hot water. ,
The controller includes an eco-drive switch that receives an eco-drive command that is a drive command in an eco-drive state that is an operation state that is out of the normal operation state,
Warm water use hot air generation configured to be operable in an eco operation state in which hot water having a temperature different from the first temperature is received and hot air is generated with the hot water when the eco operation command is received apparatus.   The temperature different from the first temperature is a second temperature lower than the first temperature, the hot water supply device is commanded to supply the hot water at the second temperature, and the hot water at the second temperature is supplied. The hot water use hot air generating device according to claim 1, wherein the hot water generating hot air generating device is configured to be operable in the eco-operation state in which hot air is generated by the hot water having the second temperature. The hot water supply device includes a main hot water generating device that generates hot water and an auxiliary heat source device that can further heat the hot water generated by the main hot water generating device,
Corresponding to the normal operation state, hot water heated to the first temperature by the auxiliary heat source machine is supplied,
The hot water using hot air generating device according to claim 2, wherein the hot water having the second temperature generated by the main hot water generating device is supplied without operating the auxiliary heat source unit corresponding to the eco-operation state. When the acceptance of the eco-operation command is not confirmed, an operation permission command for the auxiliary heat source machine is output and the hot water supply device is commanded to supply hot water at the first temperature, and the hot water at the first temperature is Receiving the supply and operating in the normal operation state,
When the acceptance of the eco-operation command is confirmed, an operation prohibition command for the auxiliary heat source unit is output, the hot water supply device at the second temperature is instructed to the hot water supply device, and the hot water supply at the second temperature is supplied The hot water use hot air generator according to claim 3, which operates in the eco-driving state in response to the operation.   The hot water generation hot air generation according to claim 3 or 4, wherein the main hot water generating device is a device that obtains the hot water at the second temperature by collecting heat discharged from a heat source device or collecting the heat from natural energy. apparatus.   The main hot water generating device stores the hot water having the second temperature obtained by collecting heat discharged from a heat source device or collecting heat from natural energy in a hot water storage tank, and upon receipt of a hot water supply command, The hot water generating hot air generating device according to claim 3 or 4, wherein the hot water generating device is a device for supplying hot water at the second temperature from a hot water storage tank.   The hot water use hot air generator according to claim 2, wherein the hot water supply device is a device that generates and supplies hot water at the first temperature or the second temperature with heat generated by fuel combustion.   A hot water temperature detecting means for detecting the temperature of the hot water supplied from the hot water supply device is provided, and with reference to the hot water temperature detected by the hot water temperature detecting means, between the normal operation state or the eco operation state. The hot water use hot air generator according to claim 1, further comprising an operation state switching means for switching the operation state.

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