JP5160250B2 - Temperature control method and combustor combined with bath - Google Patents

Description

This invention relates to a method for the cold draft measures utilizing fluid radiator, in particular, given the hot water heat bath water to the fluid in the fluid radiators, relates bathtub combined combustion apparatus which can achieve a cold draft measures and energy conservation .

Conventionally, in a window of a building such as a house, a cold draft generated by the cold air from the window, a difference of 5 degrees Celsius or more between the floor and the ceiling has occurred, and a hot water radiator has been developed to improve the phenomenon of feeling cold indoors. It's being used.
For example, Patent Document 1 describes a technique in which a hot water radiator is provided without using an underfloor space or protruding on the floor.

JP 2004-116974 A

  In this patent document 1, it is going to prevent the said cold draft using the thermal radiation part which consists of a warm water radiator which flows the warm water heated in piping.

  However, the hot water radiator of such a technique is a heating device that uses radiation and natural convection, raises the temperature of the hot water, for example, is set to 80 degrees, and is used as a cold draft countermeasure However, there was a problem that the heating operation had to be continued in the time zone in which the windows from midnight to morning were cooled, and the utility cost was increased.

The present invention has been made to solve the above-described problems, and a cold draft countermeasure method using a fluid radiator capable of suppressing the utility cost, and the utility cost can be reduced by using such a method. The object is to provide a combustion apparatus that also serves as a bath .

According to the present invention, a fluid radiator filled with a fluid is disposed in or near a window portion of a building, and based on a temperature detected by temperature detecting means for detecting a temperature inside or outside the building, the fluid of the fluid radiator A temperature control method for controlling the temperature of a fluid by exchanging heat with hot water in a bathtub drawn into a bath heat exchanger, wherein the bath heat is not exposed to outside air without performing combustion heating by a combustion device. Hot water in the bathtub is drawn only into the exchanger, and heat exchange is performed with the fluid in the fluid radiator .
According to the above configuration, based on the detected temperature detected by the temperature detecting means for detecting the temperature inside or outside the building, the fluid of the fluid radiator disposed indoors or particularly near the window is drawn into the bath heat exchanger. The temperature can be adjusted by exchanging heat with hot water in the bathtub.
In other words, it is based on the temperature detected by the temperature detection means that detects the temperature inside or outside the building, and is used to prevent a decrease in the room temperature at night as a countermeasure against cold drafts. Based on this, a heat source for cold draft countermeasures can be obtained from the hot water in the bathtub. And the temperature of the fluid of the bath heat exchanger fluid radiator that is not exposed to the outside air can be adjusted without performing combustion heating by the combustion device using the temperature of the hot water in the bathtub, While achieving a reduction in utility costs, cold drafts can be prevented.
In this way, even when it is desired to operate for a long time as a countermeasure against cold draft, the heat source of hot water in the bath tub can be used, so the effect of reducing the utility cost is great.

Further, the present invention provides a circulation pipe that draws and circulates hot water in a bathtub, a fluid radiator that is disposed in a window portion or a room of a building, hot water in the bathtub drawn from the circulation pipe, and the fluid radiator. A bath heat exchanger for exchanging heat with the fluid, temperature detecting means for detecting the temperature inside or outside the building, and the fluid of the fluid radiator based on the detected temperature of the temperature detecting means led only to the bath heat exchanger that will not be exposed to the outside air, a by heat exchange with the control unit for controlling the temperature of the fluid between the hot water of the bath drawn from the circulation pipe The controller is configured to perform control for cold draft countermeasures in which hot water in the bathtub is drawn into the heat exchanger in a state where combustion heating is not performed and heat is exchanged with the fluid of the fluid radiator. It is characterized in.
According to the above configuration, based on the detected temperature inside or outside the building detected by the temperature detecting means for detecting the temperature inside or outside the building, the fluid of the fluid radiator is guided to the bath heat exchanger and circulated. It is a combustion device that can adjust the temperature control as a countermeasure to cold draft by controlling the temperature of the fluid by exchanging heat with the hot and cold water in the bathtub drawn in from the pipeline. And since the heat source for cold draft countermeasures can be obtained from the hot water in the bathtub, the detection is made especially when the purpose is to prevent the temperature drop in the room at night as a countermeasure against cold draft. The temperature of the fluid in the fluid radiator can be controlled based on the temperature and without the combustion heating by the combustion device using the temperature of the hot water in the bathtub, so that the reduction of utility costs can be achieved. Can be done.

Preferably, it has a circulation temperature detection means for detecting the temperature of the hot water in the circulation pipe, and when the detected circulation temperature of the circulation temperature detection means is higher than the detection temperature of the temperature detection means by a predetermined temperature, It is characterized in that the temperature of the fluid is increased by exchanging heat between the fluid of the fluid radiator and the hot water of the bathtub.
According to the said structure, it further has the circulation temperature detection means which detects the temperature of the hot water of a circulation pipe line, and the temperature which detects the detection circulation temperature detected by the circulation detection means, and the temperature inside or outside a building The detected temperature detected by the detecting means is compared. When the detected circulating temperature is higher than the detected circulating temperature by a predetermined temperature, heat is exchanged between the fluid in the fluid radiator and the hot water in the bathtub via the bath heat exchanger to increase the temperature of the fluid. .
For this reason, since the fluid of the fluid radiator is heat-exchanged with hot water having a temperature higher than the temperature inside or outside the building, it is possible to efficiently and reliably take measures against cold drafts. Yes.

Preferably , it has a combustion means for heating the hot water drawn in by the circulation pipe through the bath heat exchanger, and the detected circulating temperature of the circulating temperature detecting means is detected by the temperature detecting means. When the temperature is lower than the predetermined temperature, the return pipe from the fluid radiator is led to a heat exchanger heated by the combustion means and heated.
According to the above configuration, when the detected temperature of the circulating temperature detecting means is lower than the temperature of the temperature detecting means to a predetermined temperature, the return pipe from the fluid radiator is led to the heat exchanger heated by the combustion means. Since it is heated, it is possible to easily take measures against cold draft.
In addition, when taking measures against a cold draft for a long time, for example, at night, the fluid from the fluid radiator is not always heated by the combustion means, so that no extra utility costs are spent. Further, in the main heating used in the morning, the room temperature drop at night can be reduced (assist), so that the temperature of the room or the like can be controlled efficiently.

Preferably, the fluid radiator is configured to be displaced between a position covering the opening of the window and a position opening the opening.
According to the above configuration, it is possible to easily take measures by the fluid radiator only when it is desired to take measures against cold drafts such as at night.

Preferably, in the bath heat exchanger, the fluid to the fluid radiator is passed through the primary side pipe, and the hot water of the bathtub drawn in by the circulation pipe is passed through the secondary side pipe in contact with the primary side pipe. It is characterized by having a configuration.
According to the above configuration, the fluid in the fluid radiator and the hot water in the bathtub are completely separated on the primary side and the secondary side, so that contamination of the bathtub, that is, hair and dirt, etc. are mixed in the fluid of the fluid radiator. While being able to prevent effectively, heat exchange can be performed easily and the heat of the hot water of a bathtub can be utilized efficiently.

Preferably, the heat exchanger heated by the combustion means guides a primary heat exchanger heated directly by combustion of the combustion means and the fluid before entering the primary heat exchanger, It is a heat exchanger for recovering latent heat, which is a secondary heat exchanger heated by the latent heat of exhaust gas generated with combustion.
According to the above configuration, by including the latent heat recovery heat exchanger, it is possible to recover the latent heat of the exhaust gas generated by the combustion of the combustion means, and it is possible to more effectively reduce the utility cost.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiments described below are specific examples of the present invention, and thus various technical limitations are applied. However, the scope of the present invention is described in the following description to particularly limit the present invention. As long as there is no, it is not limited to these embodiments.

FIG. 1 shows an example of a combustion apparatus according to an embodiment of the present invention. In this case, the combustion apparatus 30 is a hot water supply apparatus also serving as a bath in this embodiment.
In the figure, the combustion device 30 has a main body 30-1 made of an equipment case or the like. The combustion device 30 is connected to a bathtub 48 and other heating devices such as a fluid radiator 81 and a floor heating device which will be described later.

A combustion chamber 31 for hot water supply and a combustion chamber 41 for heating (heating) are provided in the main body 30-1.
A hot water supply burner 32 and a hot water supply primary heat exchanger 34 are disposed in the hot water supply combustion chamber 31. The hot water supply primary heat exchanger 34 includes a large number of fins. A hot water supply secondary heat exchanger 35 serving as a latent heat recovery heat exchanger for recovering latent heat contained in the exhaust gas in the combustion chamber is disposed at the subsequent stage of the hot water supply primary heat exchanger 34. That is, the hot water supply secondary heat exchanger 35 is provided at a position in contact with the combustion exhaust after the hot water supply primary heat exchanger 34 is heat-exchanged by combustion of the burner 32.

  The tap water that has entered from the water inlet pipe 36 is first led to the hot water supply secondary heat exchanger 35, and the hot water discharged from the hot water supply secondary heat exchanger 35 is led to the pipe and directly to the hot water supply primary heat exchanger 34. It enters and is heated by the hot water supply burner 32, and hot water discharged from the hot water supply primary heat exchanger 34 is discharged through a hot water supply pipe 37. The hot water supply pipe 37 is provided with a hot water solenoid valve 23 which is branched from the hot water supply pipe 37. When the hot water solenoid valve 23 is opened, the hot water supply pipe 24 is connected to a heating system 59, which will be described later. Hot water is sent to the circulation circuit.

  The combustion chamber 41 for heating (heating) is provided with a heating (heating) burner (hereinafter referred to as “heating burner”) 42, and a heating primary heat exchanger 44 is disposed at the subsequent stage. Yes. The heating primary heat exchanger 44 also includes a large number of fins. On the heating primary heat exchanger 44, a heating secondary heat exchanger 45 is disposed as a latent heat recovery heat exchanger for recovering latent heat contained in the exhaust gas of the combustion chamber 41 for heating (heating). Has been.

Further, in FIG. 1, the gas pipe 38 is led to the branch pipe 46 via the original gas solenoid valve 39, and is led to the hot water supply and heating burners 32 and 42, respectively. Each branched gas pipe is provided with a proportional valve, which corresponds to the opening / closing of each solenoid valve for switching the combustion capacity of each burner of the hot water supply burner 32 and the heating (heating) burner 42. The opening degree is adjusted, and necessary fuel gas is supplied.
Further, a hot water supply combustion fan 33 is disposed in front of the hot water supply burner 32, and a heating combustion fan 43 is disposed in front of the heating burner 42 so as to control air necessary for combustion.

Note that a receiving tray 49 as a drain receiving portion is disposed immediately below the hot water supply secondary heat exchanger 35 and the heating secondary heat exchanger 45.
In the tray 49, water vapor present in the combustion exhaust is condensed on the surfaces of the secondary heat exchangers 35 and 45 having a low temperature, and dripped drain (water) is accumulated. This drain contains nitrogen oxides and becomes acidic drain water. This drain is guided to the neutralizer 47 through the drain pipe, neutralized by the neutralizer 47, and drained through the drain pipe.

In this embodiment, the inlet pipe 67 and outlet pipe 68 of the heating primary heat exchanger 44, the inlet pipe 64 and outlet pipe 63 of the heating secondary heat exchanger 45 are a fluid radiator 81 and a heater such as a hot water mat (not shown). Connected to the closed pipe. In other words, the pipe line is filled with a fluid as a heat medium, and water is used here, for example.
A return pipe 72 from a fluid radiator 81 (whose configuration will be described later) or a heating terminal (hot water mat) (not shown) is connected to the heating secondary heat exchanger 45 via a heating circulation pump 79 and a heating circulation electromagnetic valve 80. It is connected to the inlet pipe 64.
The outlet pipe 63 of the heating secondary heat exchanger 45 enters a heating system 59 that is an air-extracted water storage tank, and the outlet pipe 65 of the heating system is connected to the entrance side of the heating pump 57.
An outlet pipe 77 of the heating pump 57 is branched into a pipe 66 and an inlet pipe 67 of the heating primary heat exchanger 44. The pipeline 66 is connected to, for example, a heating mat or the like via a plurality of drive valve headers, and the flow of fluid exchanged therein is controlled.

The outlet pipe 68 of the heating primary heat exchanger 44 is branched into an inlet pipe 73 of the bath heat exchanger 53 and an outgoing pipe 71 of the fluid radiator 81. The outlet pipe 74 of the bath heat exchanger 53 is connected to the return pipe 72 of the fluid radiator 81, and the inlet pipe 73 of the bath heat exchanger 53 constitutes the primary side of the bath heat exchanger 53.
Here, the bath heat exchanger 53 is formed of a double pipe, and when the inner pipe is the primary side, the outer pipe, which is a secondary pipe covering the outer circumference, is connected to the bathtub 48. It becomes a recirculation circulation line, and the fluid flowing through the primary side and the secondary side is exchanged heat without contact.

That is, the outlet pipe of the outer peripheral pipeline of the bath heat exchanger 53 is a bath outlet pipe 51 that faces the bathtub 48, and is connected to the bathtub 48. The bath-out pipe 51 is provided with a bath-out thermistor 22 so that the temperature of hot water entering the bathtub 48 can be detected.
A bath return pipe 52 extending from the bathtub 48 is connected to the entrance side of the outer peripheral pipeline of the bath heat exchanger 53 via a bath pump 55. The bath return pipe 52 is provided with a reheating flow control valve 54 and a bath water flow switch 56. Further, a bath thermistor 21 that detects the temperature of hot water drawn from the bathtub 48 to the appliance side is set in the bath return pipe 52.
Moreover, the code | symbol 70 of FIG. 1 has shown the control means of the combustion apparatus 30, for example, is a control board built in the instrument. The control means 70 is connected to each controlled component that is controlled according to a predetermined operation sequence in the operation of the combustion device 30.
Thus, the bath outlet pipe 51 and the bath return pipe 52 are examples of a bath circulation pipe line. The bath heat exchanger 53 is an example of a bath heat exchanger for exchanging heat between hot water in the bathtub 48 drawn into the bath circulation pipe and water that is an example of the fluid of the fluid radiator 81. ing. The bath thermistor 21 and / or the bath going thermistor 22 is an example of a circulating temperature detecting means.

This embodiment will be described. The combustion device 30 has the above-described general configuration, and an example of a flow of fluid when the combustion device 30 is set to perform the heating operation by the fluid radiator 81 by the control unit 70 will be briefly described.
Here, for example, in the case of normal heating operation, when the indoor temperature becomes higher than the set temperature, heating by the heating primary heat exchanger 44 and the heating secondary heat exchanger 45 is stopped, The heating pump 57 is driven.
When the heating is set, the fluid in the fluid radiator 81 is heated by the heating primary heat exchanger 44 and the heating secondary heat exchanger 45. At this time, the heating pump 57 is driven. . Then, the fluid of the fluid radiator 81 enters the heating secondary heat exchanger 45 through the inlet pipe 64 of the heating secondary heat exchanger 45 from the radiator return pipe 72 and passes through the outlet pipe 63 of the heating secondary heat exchanger 45. Then, it enters the heating system turn 59 which is a water storage tank. Next, the fluid enters the heating pump 57 from the outlet pipe 65 of the heating systern 59, and is branched to the pipe 66 and the inlet pipe 67 of the heating primary heat exchanger 44 through the outlet pipe 77 of the heating pump 57. The fluid then enters the heating primary heat exchanger 44 through the inlet pipe 67 of the heating primary heat exchanger 44 and is heated here. The heated fluid passes through the outlet pipe 68 of the heating primary heat exchanger 44, returns to the fluid radiator 81 through the radiator forward pipe 71. And the heated fluid can circulate through the fluid radiator 81, and can raise the temperature in a room | chamber interior. The fluid in the fluid radiator 81 can be circulated in this way by the heating pump 57.

Next, an example when the combustion apparatus 30 performs the operation | movement of a cold draft countermeasure is demonstrated easily. In the case of the cold draft countermeasure operation, unlike the heating operation, the fluid of the fluid radiator 81 absorbs the amount of hot water in the bathtub 48 through the bath heat exchanger 53, and the temperature is increased. It is introduced into the forward pipe 71 of the radiator 81. Here, the cold draft countermeasure operation includes an assist operation in which the heating burner is burned to supplement the amount of heat. Details will be described later.
That is, in the case of the operation for countermeasures against the cold draft, the heating circulation pump 79 provided in the radiator return pipe 72 is driven. At this time, the heating circulation electromagnetic valve 80 is closed so as not to enter the inlet pipe 64 of the heating secondary heat exchanger 45 from the radiator return pipe 72. Then, the fluid of the fluid radiator 81 is guided from the radiator return pipe 72 to the bath heat exchanger 53 through the outlet pipe 74 of the bath heat exchanger 53. Then, the fluid passes through the bath heat exchanger 53 and is exchanged with the hot water in the bathtub 48, that is, absorbs the heat of the hot water and is guided to the radiator forward pipe 71 through the inlet pipe 73 of the bath heat exchanger 53. Accordingly, the fluid radiator 81 is returned. When a pump other than the self-contained pump is used, the heating system turn 59 (preferably the heating pump) is preferably connected from the outlet pipe 68 so that the fluid in the heating system turn 59 disappears and the air flows into the pump and does not work due to air entrainment. An electromagnetic valve (not shown) or the like can be provided in the pipe line 57). For example, the water level electrode 61 in FIG. 1 detects the water level of the fluid in the heating cistern 59, and an electromagnetic wave (not shown) provided in the conduit of the heating cistern 59 (preferably the heating pump 57) from the outlet pipe 68 described above. It can also be controlled by a valve or the like so that the fluid in the heating system turn 59 is not lost.

In the case of the cold draft countermeasure operation, there is a portion where the flow of the fluid is partially reversed as in the case of the heating operation as described above, but the fluid in the fluid radiator 81 is circulated. There is no particular problem because it is only there.
Further, in the cold draft operation, since the circulation is performed by the heating circulation pump 79, the fluid does not flow backward to the outlet pipe 68 of the heating primary heat exchanger 44. For example, this heating primary heat exchange is performed. If a solenoid valve is provided at a branch portion between the outlet pipe 68 of the vessel 44 and the inlet pipe 73 of the bath heat exchanger 53, the risk of backflow and the like can be further eliminated. By the way, in the case of the cold draft countermeasure operation, the bath pump 55 is driven to draw hot water from the bathtub 48 into the bath heat exchanger 53. By driving the bath pump 55, hot water in the bathtub 48 is circulated through the bath heat exchanger 53 and the bath return pipe 52 and passed through the bath heat exchanger 53.
Accordingly, heat exchange is performed between the fluid of the fluid radiator 81 and the hot water of the bathtub 48, and the heat of the hot water of the bathtub 48, that is, the amount of heat that is normally left as it is and released, is used without waste. Can be done. And it is possible to take measures against cold draft while reducing the utility cost.
Furthermore, if the assist operation is performed, the temperature of the fluid in the fluid radiator 81 can be kept at a certain level, so that the next morning heating can be assisted.

Next, the fluid radiator 81 will be described with reference to FIG.
In this embodiment, a fluid radiator (hereinafter referred to as “radiator”) 81 is a straight pipe type radiator, and has a configuration in which a fluid serving as a heat medium passes through a tubular radiator body and exchanges heat with its surrounding environment. It is.
Here, in this embodiment, the radiator 81 may be installed indoors so as to cover the opening 85 of the window formed on the wall of the building, or may be installed a little away from the opening 85 of the window. .
What is important in the installation of the fluid radiator 81 is that it is installed at a position where a flow of cold air entering from the outside is generated in relation to the opening 85 of the window portion.
In other words, the window portion is a place where cold air is likely to be generated and invaded, and the cold air descends from the window portion to become a cold airflow (cold draft), flows into the room, and is the place where the room temperature is most likely to be lowered. Therefore, a cold draft can be prevented by efficiently preventing the cool air that is generated / invaded from the window portion. For this purpose, it is most efficient to arrange the fluid radiator 81 in the vicinity of the window where cold air is generated / invaded. In addition, at night and the like, indoor warm air escapes from the vicinity of the window to the outside of the room. Therefore, it is necessary to arrange the fluid radiator 81 on the window side so as to block the warm air that escapes to the outside of the room.

In order to perform such a function, the fluid radiator 81 has, for example, two main bodies 86, 86 formed by arranging two pipes 84 in the longitudinal direction as a pair pipe 84 and arranging a plurality of these or a plurality of one or more pipes. have.
A fluid is introduced into the pair pipe 84 from the forward pipe 71 extending from the main body 30-1, and returns to the main body 30-1 from the return pipe 72 to the instrument through each pair pipe 84 of each main body 86. Yes.
Further, preferably, each of the main bodies 86, 86 is formed to be displaceable.
For example, the main bodies 86, 86 are provided with support shafts 83, 83 at the upper and lower ends of positions extending in the longitudinal direction of the outer end portions thereof, and are fixed to the bearings (not shown) provided in advance in corresponding portions of the window frame. By doing so, it can be displaced by opening and closing like a double door.

In this case, the forward pipe 71 and the return pipe 72 extending from the instrument may be connected to the main bodies 86 and 86, respectively, or when the main bodies 86 and 86 are closed as shown to cover the windows. If a joint that connects one main body 86 and the other main body 86 is provided, the forward pipe 71 and the return pipe 72 extending from the instrument may be connected to only the one main body 86. In this case, the main body 86 is composed of two sheets. However, the main body 86 may be composed of one or two or more sheets, and is divided into a plurality of pieces so as to be folded like an accordion curtain. Can do. Furthermore, it is possible to arrange not only a horizontal type but also a vertical type to form a single or a plurality of blind structures.
Further, for example, a temperature detection means 87 is provided so as to be in contact with the indoor surface of the fluid radiator 81 so that the temperature in the room where the fluid radiator 81 is installed can be detected.
By this temperature detection means 87, when the indoor temperature becomes lower than a set temperature, for example, 20 degrees, a setting mode for countermeasures against cold draft described later is activated.
Here, the temperature detecting means 87 detects the indoor temperature and the temperature of the environment in which the fluid radiator 81 is placed (in the case where the temperature is set to a window, the temperature under the influence of sunlight, the window glass surface, etc.). Although the example provided in the room side of fluid radiator 81 is shown so that it can detect, it may be provided in the outside which becomes lower temperature or high temperature, for example, even if it is built in control part 70 of combustion device 30 Alternatively, it may be arranged in the main body 30-1 so that the temperature outside the building or outside the building can be detected. Thus, the temperature detection means 87 is an example of installation of the temperature detection means.

FIG. 3 is a flowchart showing an operation example when the fluid radiator 81 is operated by the control unit 70 of the combustion apparatus 30.
Here, for example, by performing the following operation at night, particularly on a day when the temperature is low, it is possible to reduce the utility cost while taking measures against cold draft.
This cold draft countermeasure is set so that it can be automatically performed by an operation button or switch such as a remote controller connected to the control unit 70 of the combustion apparatus 30 (ST1) or arbitrarily set (ST2). Is also possible.
First, in ST1, it is determined whether or not the cold draft countermeasure operation is automatically set in advance by an operation button or a switch such as a remote controller connected to the control unit 70 of the combustion apparatus 30.
If the cold draft countermeasure operation is not automatically set, the process proceeds to ST2, and it is determined whether or not the cold draft countermeasure is turned on by an operation button or a switch such as a remote controller connected to the control unit 70 of the combustion device 30. If it is not turned on, the process ends.

On the other hand, if the automatic cold draft countermeasure is set in ST1, the process proceeds to ST3. In ST3, it is determined whether or not the indoor temperature is equal to or lower than the indoor set temperature. That is, here, as described above, it is determined whether the temperature detected by the temperature detecting means 87 is equal to or lower than a set temperature (for example, 20 degrees).
In other words, when the temperature is lower than the set temperature, for example, it is from midnight to the morning, the operation of other heating equipment in the room is stopped, and the temperature in the room is decreasing. This is because it can be used as a guideline for determining whether the situation is necessary.
In ST3, when the temperature detected by the temperature detecting means 87 is higher than the set temperature, the determination is repeatedly made until the temperature falls below the set temperature without entering the cold draft countermeasure operation.

On the other hand, if the temperature detected by the temperature detecting means 87 is equal to or lower than the set temperature, the process proceeds to ST4 to start the cold draft countermeasure operation, and the bath pump 55 in FIG. 1 is turned on.
When the bath pump 55 is driven in ST4, the remaining water in the bathtub 48 is drawn into the circulation pipe line composed of the outgoing pipe 51 and the return pipe 52 to the bathtub 48. At this time, for example, the remaining water level of the bathtub water in the bathtub 48 is checked based on the water level sensor 78 in FIG. 1 or the operating state of the water flow switch or the temperature change of the bath thermistor 21 (not shown). . When there is no remaining water, it is possible to move to the next step, to display an error, or to end the environment where water can be circulated by pouring water or hot water.
Next, in ST5, the operation of the heating circulation pump 87 of FIG. 1 is started. At this time, the heating circulation electromagnetic valve 80 provided from the inlet pipe 64 of the heating secondary heat exchanger 45 is closed so that the fluid does not flow first.
When the operation of the heating circulation pump 87 is started, the fluid in the fluid radiator 81 flows from the return pipe 72 through the outlet pipe 74 of the bath heat exchanger 53 as described above in the explanation of the cold draft countermeasure operation. It is led to the bath heat exchanger 53, passes through the bath heat exchanger 53, is exchanged with hot water in the bathtub 48, is led to the forward pipe 71 through the inlet pipe 73 of the bath heat exchanger 53, and is supplied to the fluid radiator 81. Return. By circulating in this way, for example, a fluid made of water, oil, antifreeze, or the like can absorb the heat of the hot water in the bathtub 48 and increase the temperature of the fluid. The raised fluid is circulated in the fluid radiator 81 so that a cold draft can be prevented.

  Then, the process proceeds to ST6, and it is determined whether or not the bath thermistor 21 and / or the bathing thermistor 22 is, for example, a set temperature of 15 degrees or less. That is, when the bath thermistor 21 and / or the bath thermistor 22 is 15 degrees or less, the fluid of the fluid radiator 81 cannot be raised to an optimum temperature that is a countermeasure against cold draft. . Therefore, in this case, the process proceeds to ST7. On the other hand, when it is not 15 degrees or less, in order to continue the operation, the process returns to the above-described ST3 and the circulation is continued. However, even if the temperature is 15 degrees or less in this setting example, when the outside air temperature is sufficiently low, there is an effect of suppressing the temperature drop of the room or the like.

In ST7, it is determined whether or not the assist operation is set. (Assist operation will be described later.) If the assist operation is not set, the process proceeds to ST11, the bath pump 55 is stopped, and then the heating circulation pump 87 is stopped in ST12, and the operation of the cold draft countermeasure is ended. To do. In this case, the operation is a cold draft countermeasure that uses only the amount of hot water in the bathtub 48, and is the operation mode with the least energy consumption.
On the other hand, when the assist operation is set in ST7, the process proceeds to the next ST8 and starts the assist operation.

Next, the process proceeds to ST9, where the operation of the heating circulation pump 87 is first stopped, and further to ST10, the bath pump 55 is also stopped.
At this time, the heating circulation electromagnetic valve 80 provided from the inlet pipe 64 of the heating secondary heat exchanger 45 is opened to perform the assist operation, and the fluid enters the heating secondary heat exchanger 45. The tube 64 flows.
The assist operation is an operation similar to the heating operation described above, and is an operation in which the fluid in the fluid radiator 81 is heated by the heating primary heat exchanger 44. When the assist operation is started, the heating pump 57 is driven, and the fluid in the fluid radiator 81 passes from the radiator return pipe 72 to the heating secondary heat exchanger 45 through the inlet pipe 64 of the heating secondary heat exchanger 45. enter. Then, the fluid passes through the outlet pipe 63 of the heating secondary heat exchanger 45 and enters the heating system 59 which is a water storage tank for absorbing air bleed and fluid expansion and contraction. Next, the fluid enters the heating pump 57 from the outlet pipe 65 of the heating systern 59, and is branched to the pipe 66 and the inlet pipe 67 of the heating primary heat exchanger 44 through the outlet pipe 77 of the heating pump 57. The fluid then enters the heating primary heat exchanger 44 through the inlet pipe 67 of the heating primary heat exchanger 44 and is heated here. Next, the heated fluid passes through the outlet pipe 68 of the heating primary heat exchanger 44 and returns to the fluid radiator 81 through the radiator forward pipe 71.
The fluid heated in this way circulates through the fluid radiator 81 and raises the indoor temperature.
This assist operation has almost the same movement as the heating operation described above. The difference from the heating operation is a mode performed during the cold draft countermeasure operation, and the room temperature in the next ST13 is the indoor set temperature. It is a point that it is determined whether it is below (for example, 20 degrees). Here, as described above in ST3, it is determined whether the temperature detected by the temperature detecting means 87 is equal to or lower than a set temperature (for example, 20 degrees).
Then, in ST13, when the temperature is not more than the indoor set temperature, the assist operation is continued. On the other hand, if the temperature is not lower than the indoor set temperature, if the indoor temperature is higher than the set temperature, the process proceeds to ST14, where the assist operation is stopped and the cold draft operation is stopped.

That is, in ST14, the heating primary heat exchanger 44 and the heating pump 57 are also stopped, so that the utility cost is not consumed more than necessary.
In this embodiment, the flow in the case of stopping is shown as an example, but without stopping from ST12 or ST14, it is looped back to ST1, and a timer is used at a predetermined time or a predetermined time zone. Of course, it is possible to set it to operate automatically or to operate automatically regardless of the timer.

As described above, according to the present embodiment, the fluid radiator 81 of FIG. 2 is connected to the combustion device 30 having the function of boiling the bath of FIG. The temperature can be controlled using the energy of hot water in the bathtub 48. In particular, a cold draft countermeasure for a window portion at night can be realized over a long period of time with low energy consumption by using the remaining hot water in the bathtub. In addition, it is possible to perform continuous / intermittent operation of the detected temperature and the time and time zone using a timer. Further, since it is possible to provide a function for determining whether or not the combustion device can be used (assist operation), the fluid of the fluid radiator 81 is always combusted even when taking a cold draft countermeasure for a long time, for example, at night. Since there is no need to heat by means, no extra utility costs are spent.
Further, since the room temperature does not decrease, the amount of heat consumed by the main heating used in the morning is small, and the temperature of the indoor space can be adjusted.
In addition, the combustion apparatus 30 includes a heat exchanger for recovering latent heat (a hot water supply secondary heat exchanger 35 and a heating secondary heat exchanger 45), so that the latent heat of the exhaust gas generated by the combustion of the combustion means can be reduced. It can be recovered and used for heating hot water, and the utility cost can be reduced more effectively.

The present invention is not limited to the embodiment described above.
Even if the heating circulation pump 79 and the heating circulation electromagnetic valve 80 of the embodiment are not installed, the same effect can be obtained. In this case, the fluid circulation passage becomes a passage for normal heating operation and passes through the pipe of the heating primary heat exchanger, and the number of parts and further the operating parts are reduced. Is also a preferable practical device.
The combustion device 30 is a combined hot water supply device for bath reheating / heating and hot water supply, but is not limited thereto, and the present invention can also be applied to a combustion device without a hot water supply function.
Further, a part of the configuration described in the above embodiment may be combined with another configuration not described above.

The system diagram which shows embodiment of the combustion apparatus of this invention. Explanatory drawing which shows embodiment of the fluid radiator combined with the combustion apparatus of FIG. The flowchart which shows the operation example of the combustion apparatus of FIG.

Explanation of symbols

  30 ... Combustion device, 30-1 ... Main body, 31, 41 ... Combustion chamber, 32 ... Hot water supply burner, 34 ... Hot water supply primary heat exchanger, 35 ... Hot water supply secondary heat Exchanger, 36 ... Inlet pipe, 37 ... Hot water supply pipe, 38 ... Gas pipe, 42 ... Heating burner, 44 ... Heating primary heat exchanger, 45 ... Heating secondary heat Exchanger, 48 ... Bath, 55 ... Bath pump, 57 ... Heating pump, 79 ... Heating circulation pump, 80 ... Heating circulation solenoid valve, 81 ... Fluid radiator, 87 ...・ Temperature detection means

Claims (7)

A fluid radiator filled with fluid is arranged in or near the window of the building, and the heat of the fluid radiator is exchanged with the fluid of the fluid radiator based on the temperature detected by the temperature detecting means for detecting the temperature inside or outside the building. A temperature control method for controlling the temperature of the fluid by exchanging heat with hot water in the bathtub drawn into the vessel ,
The temperature is characterized in that the hot water of the bathtub is drawn only into the bath heat exchanger that is not exposed to the outside air without being heated by combustion by the combustion device, and heat is exchanged with the fluid of the fluid radiator. Adjustment method. A circulation line that draws and circulates hot water from the bathtub;
A fluid radiator located in the window or interior of the building;
A bath heat exchanger for exchanging heat between the hot water of the bathtub drawn in from the circulation pipe and the fluid of the fluid radiator;
Temperature detecting means for detecting the temperature inside or outside the building;
Based on the detected temperature of the temperature detecting means, the fluid of the fluid radiator is guided only to the bath heat exchanger that is not exposed to the outside air, and between the hot and cold water of the bathtub drawn from the circulation pipe A control unit that controls the temperature of the fluid by exchanging heat ;
Have
The control unit is
It is a configuration that performs control for cold draft countermeasure operation in which hot water in the bathtub is drawn into the heat exchanger without combustion heating and heat exchange with the fluid of the fluid radiator is performed.
Combustion device combined with bath pot . A circulation temperature detection means for detecting the temperature of the hot water in the circulation line, and when the detected circulation temperature of the circulation temperature detection means is a predetermined temperature higher than the detection temperature of the temperature detection means, The bath- combustion combustion apparatus according to claim 2, wherein heat is exchanged between the fluid and hot water of the bathtub to raise the temperature of the fluid. Combusting means for heating the hot water drawn in by the circulation pipe via the bath heat exchanger, and the detected circulating temperature of the circulating temperature detecting means is predetermined from the detected temperature of the temperature detecting means. 4. The bath-cum- combustion combustion according to claim 3, wherein when the temperature is low, the return pipe from the fluid radiator is led to a heat exchanger heated by the combustion means and heated. apparatus. 5. The bath-cum- combustion apparatus according to claim 2, wherein the fluid radiator is configured to be displaced between a position covering the opening of the window and a position opening the opening. . The bath heat exchanger has a configuration in which a fluid to the fluid radiator is passed through a primary side pipe, and hot water of a bathtub drawn in by the circulation pipe is passed through a secondary side pipe in contact with the primary side pipe; The bath-cum-cum- burning apparatus according to any one of claims 2 to 5, wherein The heat exchanger heated by the combustion means guides the primary heat exchanger heated directly by the combustion of the combustion means and the fluid before entering the primary heat exchanger, and the combustion means is combusted. The combustor combined with a bath tub according to claim 6, wherein the combustor is also a latent heat recovery heat exchanger that is a secondary heat exchanger that is heated by the latent heat of the exhaust gas that is generated.

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