JP3897426B2 - Heat source equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a remedy burner for heating a remedy heat exchanger for heating hot water circulated through a remedy circuit for a bath, and a heating terminal unit via a circulation circuit for heating. The present invention relates to a heat source device provided with a heating burner for heating a heating heat exchanger for heating a circulating heating heat medium.
[0002]
[Prior art]
In the heat source device as described above, conventionally, the heat exchanger for remedy is heated by a remedy burner dedicated to the remedy, and the heat exchanger for heating is dedicated to the heating other than the remedy burner. It was configured to be heated by a heating burner.
[0003]
[Problems to be solved by the invention]
Therefore, in the prior art, a reheating burner that heats the reheating heat exchanger and a heating burner that heats the reheating heat exchanger are separately required, leading to an increase in cost.
[0004]
The present invention has been made paying attention to such a problem, and its purpose is to enable reheating of a bath and supply of a heating medium to a terminal for heating while reducing the cost. The point is to provide a heat source device that can shorten the time required as much as possible.
[0005]
[Means for Solving the Problems]
In order to achieve this object, according to the first aspect of the present invention, a reheating burner that heats the reheating heat exchanger and a heating burner that heats the reheating heat exchanger are a single unit. Combined with the burner. In other words, the conventional burner for heating and the burner for heating were required, but the same burner can be used together. Therefore, by sharing the various valves and ignition devices attached to the burner, the overall cost is reduced. Can be reduced.
[0006]
According to the invention described in claim 1 , the liquid-liquid heat exchanger that exchanges heat with the heating medium is provided in the circulation circuit, and the liquid-liquid heat exchanger The heat of the heating medium is configured to be supplied to hot water circulated through the circulation circuit.
Therefore, since the hot water in the remedy circuit is heated by the liquid heat exchanger in addition to the remedy heat exchanger, the time required for remedy is reduced as much as possible. In particular, when the heating terminal is not operating, there is a possibility that the heat of the heating medium heated by the heating heat exchanger may be wasted, but the heat of the heating medium is fluidly exchanged. Since it can be collected on the hot water side for remedy by the vessel, the disadvantage caused by the combined use of the remedy burner and the heating burner can be eliminated.
[0007]
According to the second aspect of the present invention, both the heat exchanger for remedy and the heat exchanger for heating are constituted by fin tube type heat exchangers, and the fins of both heat exchangers are the same fins. Shared by.
Therefore, the cost can be reduced as compared with the case where fins are provided separately, and the heat exchanger can be made compact.
[0008]
According to invention of Claim 3 , the hot water supply burner for heating the heat exchanger for hot water supply which heats the water from a water supply channel and supplies it to a hot water supply channel is provided, The hot water supply channel and the circulation for memorialization The road is connected by a hot water bath for bath bathing.
Therefore, with one heat source device, not only bathing and heating of the bath but also hot water filling of the bath can be performed, and it can be used conveniently while reducing costs.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
A heat source device according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, this heat source device heats water from a water supply channel 1 connected to a general household water pipe, and supplies hot water after heating to a hot water supply channel 3 having a hot water tap 2 at its tip. The hot water supply heat exchanger 4 is configured to be heated by a hot water supply gas burner 7.
[0010]
Further, the heat source device heats hot water as a heating medium from the heating return path 8 of the heating terminal T connected to various heating devices such as a floor heating device and a bathroom heating device, and performs heating. A finned tube type heat exchanger 11 for heating the heating route 9 to the terminal T for heating, and a finned tube type heat exchanger 6 for heating and chasing hot water in the bathtub 5; The heating heat exchanger 11 and the reheating heat exchanger 6 are configured to be heated by a heating gas burner 10 that also serves as a single renewal burner. In addition, the heating medium for heating is not limited to hot water and may be other heating medium.
[0011]
The heat exchangers 6 and 11 will be described in detail. As shown in FIG. 2, the remedy heat exchanger 6 includes a plurality of heating fins 6a and tubes 6b penetrating the fins 6a. The heating heat exchanger 11 is also composed of a plurality of heating fins 11a and tubes 11b penetrating the fins 11a. The plurality of fins 6a of the memory heat exchanger 6 and the plurality of fins 11a of the heating heat exchanger 11 are integrally formed and shared by the same fins.
[0012]
A hot water supply gas burner 7 for heating the hot water supply heat exchanger 4 is a multistage burner, and gas supply passages 12 for supplying general household fuel gas are branched and connected to three systems. Further, a gas switching solenoid valve 13a, an electromagnetic hot water supply gas proportional valve 13b for adjusting the fuel gas supply amount, a hot water supply intermittent valve 13c for intermittently supplying the fuel gas, and the like are provided.
The gas supply path 12 is branched and connected so as to supply fuel gas to the heating gas burner 10 for heating the heat exchanger 6 for heating and the heat exchanger 11 for heating. The fuel gas is also supplied to the gas supply path 12. Is provided with an intermittent heating valve 14a, an electromagnetic heating proportional gas valve 14b for adjusting the fuel gas supply amount, etc., and the fuel gas is intermittently supplied to the gas supply path 12 upstream of the branch connection point. An original gas solenoid valve 15 is provided.
[0013]
The gas burners 7 and 10 are housed in the same combustion chamber, and combustion fans 7a and 10a for supplying combustion air to the gas burners 7 and 10 are also provided. In the vicinity of the gas burners 7 and 10, An ignition igniter that performs an ignition operation on both the gas burners 7 and 10, a frame rod that detects whether or not both the gas burners 7 and 10 are ignited, and the like are provided.
[0014]
A water supply channel 1 connected to a general household water pipe is provided with a water supply thermistor 16 for detecting a water supply temperature and a water amount sensor 17 for detecting a water supply amount. A water supply path 1 and a hot water supply path 3 on the downstream side of the water supply thermistor 16 and the water quantity sensor 17 are connected via a water supply bypass path 18 so as to bypass the hot water supply heat exchanger 4.
[0015]
A hot water supply passage 3 having a hot water tap 2 at its tip is provided with a hot water thermistor 19 for detecting the temperature of hot water from the hot water supply heat exchanger 4, an amount of hot water from the hot water supply heat exchanger 4, and a water supply bypass. A mixing valve 20 that adjusts the mixing ratio with the amount of water from the passage 18, a hot water thermistor 21 that detects the temperature of hot water after mixing by the mixing valve 20, a water proportional valve 22 that adjusts the amount of hot water, An interruption water amount sensor 23 for detecting an interruption of hot water supply is provided.
[0016]
The mixing valve 20 is provided at a connection point between the water supply bypass path 18 and the hot water supply path 3, and hot water from the hot water supply path 3 is bathed in the hot water supply path 3 between the water proportional valve 22 and the interrupted water amount sensor 23. A hot water filling path 25 for supplying water to the branch 5 is branched and connected.
[0017]
The remedy heat exchanger 6 is connected to a tub return path 26 and a first tub forward path 27a from the tub 5, and the remedy liquid heat exchanger 30 to be described later is connected to the first bath. The outgoing path 27a and the outgoing path 27b for the second bathtub to the bathtub 5 are connected. The first bathtub outgoing path 27 a and the second bathtub outgoing path 27 b constitute a bathtub outgoing path 27, and the bathtub outgoing path 27 and the bathtub return path 26 are connected to the bathtub 5 via the bath adapter 28. It is connected to form a memorial circuit.
[0018]
And the hot water in the bathtub 5 circulates through the bathtub return path 26 and the bathtub return path 27 by driving the circulation pump 29 for the chasing provided in the bathtub return path 26. That is, hot water in the bathtub 5 is supplied to the remedy heat exchanger 6 via the bathtub return path 26 and then supplied to the remedy liquid heat exchanger 30 via the first bathtub outgoing path 27a. Furthermore, it is supplied into the bathtub 5 through the second bathtub outgoing path 27b.
[0019]
The bathtub return path 26 includes, in order from the upstream side, a pressure detection type water level sensor 31 that detects the water level in the bathtub 5 by detecting pressure, a bath return thermistor 34, and a bathtub return path 26. An electromagnetic bath two-way valve 32 that opens and closes, a recirculation pump 29 for hot water circulation, and a water flow switch 33 are provided. The bathtub forward thermistor 35 is provided in the second bathtub forward path 27 b on the downstream side of the memorial liquid heat exchanger 30.
[0020]
A hot water filling passage 25 for supplying hot water from the hot water supply passage 3 to the bathtub 5 is connected to a bathtub return passage 26 between the circulation pump 29 for remedy and the water flow switch 33. The hot water filling passage 25 is provided with a hot water solenoid valve 35 and a hot water check valve 36 as hot water opening / closing means for opening and closing the hot water filling passage 25 from the upstream side.
Further, an air layer forming hopper 37 communicating with the hot water filling passage 25 is interposed in the hot water filling passage 25 between the hot water filling electromagnetic valve 35 and the hot water filling check valve 36.
[0021]
The air layer forming hopper 37 is provided with a drainage passage 38 for draining hot water and an electromagnetic drainage valve 39 as a drainage opening / closing valve for opening and closing the drainage passage 38, and the end of the drainage passage 38 is a bath. It is connected to a bathtub return path 26 between the two-way valve 32 and the recirculation circulation pump 29.
[0022]
A heating return path 8 and a heating forward path 9 are connected to the heating heat exchanger 11 as a heating circulation path. The heating return path 8 includes an expansion tank 40 that is open to the atmosphere from the upstream side, and And a heating thermistor 42 for detecting the temperature of hot water after being heated by the heating heat exchanger 11 from the upstream side, and a heating liquid. A heat exchanger 30 is provided.
[0023]
The heating return path 8 upstream of the expansion tank 40 and the heating forward path 9 downstream of the heating liquid heat exchanger 30 bypass the heating terminal T so as to bypass the heating terminal T. 43, and an on-off valve 44 for remedy is provided in the heating bypass passage 43.
The expansion tank 40 suppresses an abnormal boiling phenomenon by opening air bubbles in the circulating hot water to the atmosphere, and always fills the heating return path 8 and the heating outgoing path 9 with hot water. It is trying to be.
[0024]
As shown in FIG. 3, the heating liquid-to-liquid heat exchanger 30 includes a bathtub going-out path 27 and a heating going-out path 9 in a part of the section. It is comprised so that the concentric double structure which makes 9 outside may be made. That is, heat is supplied from the hot water in the heating outbound path 9 to the hot water in the bathtub outbound path 27 so that the hot water in the bathtub outbound path 27 is heated.
[0025]
Then, by driving the heating circulation pump 41, hot water as a heating medium is supplied from the heating terminal T to the heating heat exchanger 11 via the heating return path 8, and the heated hot water is supplied. It is configured to be supplied to the heating terminal T via the heating outbound path 9. At this time, the remedy on-off valve 44 is closed.
That is, when the hot water in the bathtub 5 is replenished, the retreat on-off valve 44 is opened, and the hot water heated by the heating heat exchanger 11 is circulated through the heating bypass passage 43 to follow up. It is configured to be supplied to the liquid heat exchanger 30 for dredging.
[0026]
The control unit H that controls the operation of the hot water supply device includes a microcomputer and is configured to be able to communicate with the remote controller 45. The remote controller 45 has an operation switch 46 for instructing start and stop of operation, a hot water switch 47 for instructing hot water operation, an amendment switch 48 for instructing hot water operation, and a heating operation instructing the operation of the heating device. The switch 49 is provided with a temperature setting switch 50 for setting a general hot water supply temperature or a hot water supply temperature. Note that one or more remote controllers as described above may be provided.
[0027]
A control operation of the hot water supply device by the control unit H will be described.
First, when the operation switch 46 of the remote controller 45 is turned on, a general hot water supply operation or a hot water filling operation from the hot water tap 2 can be performed.
In the general hot water supply operation for supplying hot water from the hot water tap 2, when the hot water tap 2 is opened and the amount of water detected by the water amount sensor 17 exceeds a predetermined amount, the fan 7a is driven and then the original gas solenoid valve 15 and the hot water supply intermittent valve 13c are opened. Then, the opening degree of the hot water supply gas proportional valve 13b is adjusted and the hot water supply gas burner 7 is ignited by the igniter.
[0028]
When the hot water supply gas burner 7 is ignited, the gas switching solenoid valve 13a is appropriately switched based on the hot water supply temperature set by the temperature setting switch 50 of the remote controller 45, the detected water temperature by the water supply thermistor 16, the detected water amount by the water amount sensor 17, and the like. At the same time, the opening degree of the hot water supply gas proportional valve 13b is adjusted, and the opening degree of the mixing valve 20 is also adjusted so that the hot water supply temperature becomes the set temperature.
[0029]
In addition to this feedforward control, so-called feedback is used to finely adjust the opening degree of the hot water proportional gas valve 13b based on the deviation between the hot water temperature set by the temperature setting switch 50 of the remote controller 45 and the hot water temperature detected by the tapping thermistor 21. Control is executed, and hot water having a temperature set by the temperature setting switch 50 is supplied from the hot-water tap 2.
When the hot-water tap 2 is closed and the water amount sensor 17 no longer detects a predetermined amount of water flow, the main gas solenoid valve 15 and the hot water supply intermittent valve 13c are closed to stop the combustion of the hot water supply gas burner 7 and keep constant. After a lapse of time, the fan 7a is also stopped to end the general hot water supply operation.
[0030]
In the filling operation for filling the bathtub 5, when the filling switch 47 of the remote controller 45 is turned on, the filling solenoid valve 35 is opened, and when the water amount sensor 17 detects a water flow of a predetermined amount or more, the above-described general operation is performed. As with the hot water supply operation, the hot water supply gas burner 7 is ignited, and hot water at a set temperature is supplied to the bathtub 5 by feedforward control and feedback control.
That is, the opening degree of the hot water supply gas proportional valve 13b and the mixing valve 20 is adjusted, the water from the water supply passage 1 is heated by the heat exchanger 4 for hot water supply, and the water from the water supply bypass passage 18 is added to the heated hot water. After being mixed, hot water having a temperature set by the temperature setting switch 50 is supplied to the bathtub return path 26 and the bathtub outbound path 27 via the hot water filling path 25, and both the bathtub return path 26 and the bathtub outbound path 27 are provided. To be supplied into the bathtub 5.
[0031]
When a predetermined amount of hot water is supplied into the bathtub 5, the main gas solenoid valve 15 and the hot water supply intermittent valve 13 c are closed based on the detection information of the water level sensor 31, and the combustion of the hot water supply gas burner 7 is stopped. Then, after driving for a certain time, the fan 7a is also stopped and the hot water filling operation is completed.
When the hot water tap 2 is opened during the hot water filling operation, the interrupt water amount sensor 23 detects the water flow, stops the hot water filling operation, and executes the general hot water supply operation. That is, the general hot water supply operation is executed with priority, and when the hot water tap 2 is closed, the hot water filling operation is resumed.
[0032]
When the hot water filling operation described above is completed, the hot water in the hopper 37 is opened for a certain period of time and the drain valve 39 is discharged to the bathtub return path 26 and the like. Then, the memorial circulation pump 29 is operated to circulate hot water in the bathtub 5 and hot water discharged from the hopper 37 through the bathtub return path 26 and the bathtub return path 27 and the like, and the detection by the return thermistor 34 is performed. If the hot water temperature has reached the set hot water temperature of the remote controller 45, the chasing circulation pump 29 is stopped. If the hot water temperature has not reached the set hot water temperature of the remote controller 45, the chasing operation is automatically executed.
[0033]
The memorial operation for heating the hot water in the bathtub 5 is automatically shifted to the memorial operation after the completion of the hot water filling operation as described above, or when the memorial switch 48 of the remote controller 45 is turned on, the memorial circulation is performed. The hot water in the bathtub 5 is circulated through the bathtub return path 26 and the bathtub forward path 27 by the operation of the pump 29, and the inside of the bathtub 5 is treated by the memorial heat exchanger 6 and the memorial liquid heat exchanger 30. The hot water is heated.
[0034]
Specifically, if the heating gas burner 10 is not combusted, the operation of the recirculation circulation pump 29 is started, and the fan 10a is driven along with the water flow detection of the water flow switch 33, and then the original gas solenoid valve 15 and the heating intermittent valve 14a are opened, the opening degree of the heating gas proportional valve 14b is adjusted, the heating gas burner 10 is ignited by an igniter to start combustion, and the hot water in the bathtub 5 is used for memory Heating is performed by the heat exchanger 6 and the liquid heat exchanger 30 for heating.
At that time, the on / off valve 44 for remedy is opened, and the hot water heated by the heating heat exchanger 11 is circulated through the heating bypass passage 43 and is heated based on the detected hot water temperature of the forward thermistor 35. The opening degree of the gas proportional valve 14b is adjusted.
[0035]
Thus, hot water in the bathtub 5 is heated by the remedy heat exchanger 6 and the remedy liquid heat exchanger 30 while circulating through the bathtub return path 26 and the bathtub outbound path 27. In the operating state of the heating terminal T in which the heating gas burner 10 is already combusted, the heating heat exchanger 6 and the tracking heat exchanger 6 and the tracking heat pump 6 are started simultaneously with the start of the operation of the tracking circulation pump 29. It is heated and chased by the liquid-liquid heat exchanger 30. At that time, the on / off valve 44 for remedy is closed, and the hot water heated by the heating heat exchanger 11 is supplied to the heating terminal T.
[0036]
As described above, when the hot water in the bathtub 5 is heated by the heat exchanger 6 for remedy and the detected hot water temperature by the return thermistor 34 reaches the set hot water temperature of the remote controller 45, it is determined that the remedy operation is finished. Then, the combustion of the heating gas burner 10 is stopped, and the fan 10a is stopped after a lapse of a certain time. When the heating operation described later is executed, each operation is continuously executed even if the follow-up operation is finished. The
[0037]
In this way, hot water in the bathtub 5 is circulated through the bathtub return path 26 and the bathtub return path 27, and efficiently heated by the remedy heat exchanger 6 and the remedy liquid heat exchanger 30. Therefore, the time required for chasing can be shortened, and the running cost can be reduced.
[0038]
In the heating operation of supplying hot water as a heating medium to the heating terminal T, when the heating operation switch 49 of the remote controller 45 is turned on, the heating circulation pump 41 is driven to heat the hot water from the heating return path 8. The heated hot water is supplied to the heating heat exchanger 11, the heated hot water is supplied to the heating terminal T via the heating outgoing path 9, and the hot water exchanged in the heating terminal T is supplied via the heating return path 8. And supplied to the expansion tank 40. Then, the opening degree of the heating gas proportional valve 14b and the like is adjusted so that the detected hot water temperature of the heating thermistor 42 becomes a set hot water temperature (for example, 80 ° C.).
[0040]
[Another embodiment]
( 1 ) In the above embodiment, the heat exchanger 6 for remedy and the heat exchanger 11 for heating are both constituted by fin tube type heat exchangers, and the fins of both heat exchangers 6 and 11 are the same. Although it is set as the structure shared by a fin, it is not necessarily required to share a fin, You may comprise the fin 6a of the heat exchanger 6 for remedy and the fin 11a of the heat exchanger 11 for heating with a separate fin. .
[0041]
( 2 ) In the above embodiment, the hot water filling passage 25 connecting the bathtub return passage 26 and the hot water supply passage 3 is provided, and the hot water filling of the bath is performed via the hot water filling passage 25. Alternatively, hot water may be directly supplied into the bathtub 5 from a hot water tap provided in the hot water supply path 3.
[0042]
( 3 ) In the above embodiment, as an example of the memorial liquid heat exchanger 30, the bathtub outgoing path 27 is configured to pass through the heating outgoing path 9 concentrically. Further, the heating outbound path 9 may be configured to penetrate the bathtub outbound path 27, or the bathtub outbound path 27 and the heating outbound path 9 may be brought into contact with each other to form a liquid heat exchanger. .
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a heat source device. FIG. 2 is a perspective view of a main portion of the heat source device. FIG. 3 is a configuration diagram of a liquid heat exchanger.
DESCRIPTION OF SYMBOLS 1 Water supply path 3 Hot water supply path 4 Heat exchanger for hot water supply 6 Heat exchanger for reheating 6a Fin of heat exchanger for reheating 7 Hot water supply burner 8, 9 Heating circulation path 10 Heating burner 11 as reheating burner Heat exchanger 11a Heating heat exchanger fin 25 Hot water filling passages 26, 27 Circulation circuit 30 Liquid heat exchanger 35 Hot water opening / closing means T Heating terminal

Claims (3)

A remedy burner for heating a heat exchanger for remedy for heating hot water circulated through the circulation circuit for bath remedy, and heating circulated through the heating circuit for heating terminals A heat source device provided with a heating burner for heating a heating heat exchanger for heating the heating medium,
The memorial burner and the heating burner are combined in a single burner ,
A liquid-to-liquid heat exchanger that exchanges heat with the heating heat medium is provided in the recirculation circuit, and the heat of the heating heat medium is used for replenishment through the liquid heat exchanger. It is configured to be supplied to hot water circulated through a circulation path,
The heating heat exchanger is connected to the heating return path provided with an open-air expansion tank and the heating route provided with the liquid heat exchanger as the heating circulation path,
The heating return path upstream of the expansion tank and the heating outbound path downstream of the liquid heat exchanger are connected via a heating bypass path so as to bypass the heating terminal. A heat source device in which a heating on-off valve is provided in the heating bypass . 2. The heat exchanger for remembrance and the heat exchanger for heating are both constituted by fin tube type heat exchangers, and the fins of both heat exchangers are shared by the same fins. Heat source device. A hot water supply burner is provided for heating a hot water supply heat exchanger that heats water from the water supply passage and supplies the hot water supply passage to the hot water supply passage. The heat source device according to claim 1, wherein the heat source device is connected by a stretch path .

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