JP3536737B2 - Water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply device, and more particularly to a hot water supply device having a hot water storage tank as a heat exchange medium tank in a combustion can body and passing a heat exchange section such as a heat exchange coil for hot water supply into the hot water storage tank. In this regard, the present invention relates to a hot water supply device that is configured to indirectly heat water flow indirectly. In addition, the present invention relates to a device in which the hot water supply device has a bath reheating function and a hot water heating function.

[0002]

2. Description of the Related Art In a conventional general hot water supply apparatus, a heat exchange portion such as a heat exchange coil disposed in an exposed state in an upper portion of a combustion chamber or the like directly receives combustion heat, thereby forming a heat exchange coil. The water passing inside is instantaneously heated. On the other hand, there is also provided a hot water supply apparatus in which a semi-hot water storage tank which is not so large is provided at an upper portion of a combustion chamber, and this is used as a heat exchange medium tank, and a heat exchange unit such as a heat exchange coil for hot water supply is disposed therein. I have. In this type of hot water supply device, the semi-hot water storage tank is heated by combustion heat, and water passing through a heat exchange coil arranged in the semi-hot water storage tank is indirectly heated by the hot water in the semi-hot water storage tank. Liquid-liquid exchange)
Hot water was being supplied.

[0003]

However, in the hot water supply apparatus of the type in which the hot water in the heat exchange coil is further instantaneously heated by the hot water in the hot water storage tank using the hot water storage tank, the temperature of the hot water storage tank is increased. Must be kept at a high temperature as a heat exchange medium,
Conventionally, the burner is controlled to be on / off with the maximum combustion capacity to maintain the temperature of the hot water tank at a high constant temperature, and thus has the following problems. That is, since the maximum combustion is performed even when the required combustion capacity is extremely small, such as when supplying a small amount of hot water, and the maximum combustion is performed even when the hot water supply is not used, there is a problem that the combustion noise is loud every time and is annoying.
In addition, since it often burns at a capacity higher than the required combustion capacity, the on-time in the on-off control is shortened, the combustion cycle is shortened, and as a result, the number of times of combustion increases, which is unpleasant and unpleasant. Had a problem.

Therefore, the present invention solves the above-mentioned disadvantages of the conventional hot water supply apparatus, and frequently turns on and off the burner.
Another object of the present invention is to provide a hot water supply device that can eliminate harshness and discomfort caused by a large combustion noise, and can easily maintain the temperature of a hot water storage tank in a predetermined high temperature range by efficient combustion.

[0005]

Means for Solving the Problems To achieve the above object, a hot water supply apparatus of the present invention has a combustion can body provided with a hot water tank , and at least hot water in the hot water tank is used as a heat exchange heating medium.
And hot water storage tanks.
Hot water supply equipped to enable hot water heating operation using water
A device that supplies hot water to the burner during hot water supply alone operation
Combustion with the capacity according to the amount of heat required for
The amount of heat required for hot water supply during simultaneous operation of hot water heating operation
The provisional capacity required for hot water heating is added to the capacity according to
And burn the burner with the total capacity
Make sure that the hot water temperature in the hot water tank is within a certain temperature range.
The first feature is that the on / off control is performed. Further, the hot water supply device of the present invention has a combustion can body provided with a hot water storage tank, and in addition to a hot water supply operation and a bath reheating operation using at least hot water in the hot water storage tank as a heat exchange heating medium , a hot water storage tank.
A hot water supply device that is equipped to perform a hot water heating operation using hot water, and during the bath reheating operation,
Regardless of the presence or absence of other operations, the burner of the combustion can body is burned with high capacity, and during the hot water supply operation when the bath reheating operation is not performed, the capacity of the burner according to the amount of heat required for hot water supply. Combustion in hot water heating operation
If it is performed at the same time as hot water supply operation,
The second feature is that the burner is burned with the total capacity obtained by adding the provisional capacity, and the combustion of the burner is controlled to be on / off so that the temperature of the hot water in the hot water tank falls within a certain temperature range. . Or water heater of the present invention, in addition to the first or second feature, if only when or hot water heating operation is not performed any operation is performed, the combustion by the burner of the combustion can body When the heat retention and heating of the hot water storage tank are started, first, combustion is started with the capacity at the time of ignition of the burner, and then the combustion capacity can be adjusted by a certain capacity at regular time intervals so that the temperature of the hot water tank is within a certain range. The third feature is that the control is performed so as to fall within the range.
Further, the hot water supply device of the present invention has a combustion can body provided with a hot water storage tank as a heat exchange medium tank, and a hot water supply heat exchange section of a hot water supply circuit is arranged in the hot water storage tank, so that the inside of the hot water supply heat exchange section Hot water in the hot water storage tank, wherein the hot water in the hot water storage tank is secondarily indirectly heated by hot water in the hot water storage tank, and combustion of the burner is controlled to be on / off so that the temperature of the hot water in the hot water storage tank is within a certain temperature range. In addition, when the heat retention and heating of the hot water storage tank is started, regardless of whether or not the actual hot water supply operation is performed, first, the burner is burned with a high capacity until the temperature of the hot water storage tank reaches a certain temperature, and once the said After reaching a certain temperature, during hot water supply operation, the burner burns with the capacity corresponding to the amount of heat slightly added to the required hot water supply heat, and during non-hot water supply operation, the burner burns with the capacity corresponding to the temperature of the hot water tank. as a fourth means performs the That.

According to the first feature, the hot water in the hot water storage tank is
A hot water supply operation can be performed as a heat exchange heating medium. In addition, of hot water tank
Hot water heating operation using hot water is possible. And hot water luck alone
During rotation, the burner is capable of operating according to the amount of heat required for hot water supply.
Burned by power. Simultaneous operation of hot water supply operation and hot water heating operation
During rolling, the hot water has the capacity according to the amount of heat required for hot water supply.
Burner with total capacity plus temporary capacity required for heating
Is burned. And the burner burns the hot water in the hot water tank.
ON / OFF control is performed so that the temperature is within a certain temperature range.
You. According to the first feature, the hot water heating operation is performed by hot water supply.
If it is performed at the same time as the hot water
Burner burner with total capacity plus constant capacity
As a result, the combustion capacity was insufficient and the hot water storage temperature was within a certain temperature range.
Ensure that it does not fall below the enclosure
As well as excess capacity burning and associated bars
Noise and combustion loss due to frequent on / off
To achieve efficient storage of hot water.
You.

According to the second feature, the first feature is provided.
In addition to the functions and effects of
In addition, bath reheating using hot water in a hot water tank as a heat exchange heating medium
You can drive. And during bath reheating,
With or without other operations, the burner of the combustion can
Burns with high capacity. Because of this, the hot water in the hot water tank
Boiling quickly and within a certain temperature range even at high temperatures
As it is reliably maintained, the necessary bath input is sufficiently obtained.
The reheating time can be shortened. After bath reheating
In the outside hot water single operation, the capacity according to the amount of heat required for hot water
Combustion is performed, and hot water supply operation and temperature except during bath reheating operation
In the simultaneous operation of the water heating operation, the capacity required for hot water
The total capacity plus the temporary capacity required for water heating
Since the burner is burned, the burner is
On and off with high capacity such as maximum capacity
The burner is frequently turned on and off.
Or the harshness of the burning noise
Discomfort can be eliminated. At the same time, the nature of each driving
Efficient combustion according to quality, easy to use hot water in hot water tank
It can be kept well and in a predetermined high temperature range.

[0008] In the above description, high performance means, for example,
Can be the maximum capacity of the
To make the hot water in the hot water tank boil quickly enough
It is good if it is a high ability that can do. The ability is specifically
Generally, it is expressed by a number, but 1 is 1 lit.
The amount of heat that raises the temperature of water by 25 ° C per minute. For example,
Burning a burner with the capacity of No. 25 means that
Demonstrate the amount of heat that raises 1 liter of water by 25 ° C per minute
Burner combustion.

[0009] According to the third feature, the first or the first feature is provided.
In addition to the operation and effect of the second feature, when none of the operations is performed or when only the hot water heating operation is performed, the combustion by the burner of the combustion can starts heating and heating of the hot water storage tank. Then, first, the combustion is started at the capacity at the time of ignition of the burner, for example, at No. 9, and then the combustion capacity can be adjusted at a constant capacity, for example, every 10 seconds, for example, at a constant capacity, for example, for No. 1, and the hot water tank Is controlled to be within a certain range, for example, a range of 75 ° C. to 85 ° C., so that the combustion capacity is slowly increased when the actual operation is not being performed, thereby reducing noise. It can be reduced enough. If the operation is not being performed, there is no problem even if the temperature rises slowly. In addition, in the case of hot water heating alone operation, noise can be reduced by continuing combustion with a low combustion capacity. Even in such a case, the hot water heating operation can be sufficiently performed. As described above, according to the third feature, the burner is not frequently turned on and off except when high-capacity combustion is not required, and the combustion noise is reduced to prevent annoying or Discomfort can be eliminated, and at the same time, appropriate combustion according to the nature of each operation can ensure usability in accordance with the type of operation.

According to the fourth feature, in the hot water supply apparatus for heat-exchanging and heating hot water using hot water in the hot water storage tank as a heat exchange medium, when the hot water storage tank heating and heating is started, first the hot water storage temperature becomes constant temperature. The hot water tank can be quickly boiled by burning the burner with high capacity until the temperature of the hot water storage tank is reached. Depending water supply operation of the actual and can perform hot-water supply at a predetermined temperature even if, it quickly in response to being started early. The high ability is as described above. Further, after the hot water storage tank once reaches a certain temperature, the burner is burned with the ability corresponding to the heat amount slightly higher than the required hot water supply heat amount during hot water supply. When burning with the capacity corresponding to the required hot water supply calorie calculated to supply hot water at the set hot water supply temperature, if the amount of heat is less than the actual number required due to detection errors of the temperature sensor or flow rate sensor, etc. Occurs. Also, even if it is attempted to correct this by feedback control, the temperature detected by the hot water storage temperature sensor often does not match the temperature when the inside of the hot water tank is viewed in total, so it corresponds to the heat amount slightly added to the required hot water supply heat amount By burning the burner with the ability to perform the heating, it is possible to surely obtain the required amount of hot water supply and prevent the hot water in the hot water storage tank from quickly rising to the upper limit temperature and stopping the combustion. The required amount of hot water supply can be calculated from the set hot water supply temperature, the incoming water temperature detected by the incoming water temperature sensor, and the incoming water flow rate detected by the incoming water flow rate sensor. In addition, the heat amount added a little can be, for example, the number of Nos. 2 to 3, but is not limited to this. By experiments in advance, the shortage of the heat amount can be eliminated and the temperature of the hot water storage can rapidly increase. The amount of heat that does not exist can be determined and used. Also, once the hot water tank reaches a certain temperature, during non-hot water supply operation, the burner is burned with the capacity corresponding to the temperature of the hot water tank, so that when the temperature of the hot water tank is close to the certain temperature, the capacity is low. Therefore, the temperature can be sufficiently maintained even when the combustion is performed, so that the combustion can be performed quietly in the meantime, the frequent on / off operation can be eliminated, and unnecessary heat loss can be eliminated .

As described above, according to the fourth feature, the hot water storage tank
Until the warm water reaches a certain temperature,
Separately during hot water supply operation and non-hot water supply operation after reaching,
By operating each preferred burner, combustion noise and
Other burner noise can be reduced,
The amount of heat required according to the situation of each operation is not excessive,
In addition, it can be supplied efficiently without running out
You.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic configuration diagram of a hot water supply apparatus according to an embodiment of the present invention, FIG. 2 is a flowchart of burner combustion control according to an embodiment of the present invention, and FIG. 3 is a burner combustion control according to another embodiment of the present invention. FIG. 4 is a flowchart of a burner combustion control according to still another embodiment of the present invention, and FIG. 5 is a flowchart of a burner combustion control according to still another embodiment of the present invention.

Referring to FIG. 1, first, the entire hot water supply apparatus will be described. Reference numeral 10 denotes a combustion can body, which is provided with a hot water storage tank 12 called a so-called semi-hot water storage tank above a combustion chamber 11, and a blower 13 a and an oil spray nozzle 1 for the combustion chamber 11.
An oil burner 13 having 3b is provided to face. The hot water storage tank 12 functions as a heat exchange medium tank, and hot water in the hot water storage tank 12 is not used for hot water supply. A plurality of exhaust gas passages 14 are provided in the hot water storage tank 12 so as to penetrate in the vertical direction. The hot water tank 1
2 is provided with a hot water storage temperature sensor 12a.

A hot water supply circuit 20 is provided for the hot water storage tank 12.
Is provided. The hot water supply circuit 20 includes a water supply channel 21, a heat exchange coil 22 for hot water supply as a heat exchange unit for hot water supply, a hot water supply channel 23, and a bypass 2 from the water supply channel 21 to the hot water supply channel.
4, hot water mixing means 25 for mixing hot water from the hot water path 23 and the bypass path 24, and a hot water supply path 26 for guiding hot water flowing out of the hot water mixing means 25 to a hot water supply terminal 29 such as a hot water tap. And a hot-water supply path 27 dedicated to a bathtub branched from the hot-water supply path 26. The heat exchange coil 22 for hot water supply is immersed in the water storage tank 12 and is wound around the water storage tank 12 at a position near the outer periphery thereof many times. The inlet channel 21 is provided with an inlet temperature sensor 21a and an inlet flow sensor 21b.
3a, and a hot water supply temperature sensor 26a
Is provided. Further, a total flow rate adjusting means 28 is provided in the hot water supply passage 26. This total flow control means 28
The total flow rate of the water flowing through the hot water supply passage 26 is controlled so that the outlet water temperature cannot reach the set hot water supply temperature even if the entire amount of the water flowing from the water inlet passage 21 is subjected to heat exchange heating. It is a flow control valve provided for regulation.

A circulation circuit 30 for reheating the bath is also provided for the hot water storage tank 12. The bath reheating circuit 30 has a bath outward path 31, a bath reheating heat exchange coil 32, and a bath return path 33. The heat-exchanging coil 32 for bath heating is wound many times inside the hot water tank 12 of the combustion can body 10 at a position inside the case of the heat-exchange coil 22 for hot water supply. The water in the bathtub (not shown) is guided into the hot water tank 12 by the circulation pump 34,
Heated. A bypass 36 is provided between the bath outward path 31 and the bath return path 33 through a three-way valve 35, and the bathtub-dedicated hot water supply path 27 is provided in the bypass path 36.
a, a flow sensor 27b, and a check valve 27c. The bath return path 33 includes a bath temperature sensor 33.
a and a bath water flow switch 33b.

A heating circuit 40 is provided for the hot water storage tank 12.
Is configured. In the heating circuit 40, a heating high-temperature outgoing path 41 is directly connected to the top of the hot water tank 12, and a heating return path 43 is connected to the hot water tank 12 so that heating can be performed by directly using hot water in the hot water tank 12. It is directly connected to the lower part of the tank 12. A circulation pump 44 is provided in the heating return path 43, and a heating low-temperature forward path 42 is provided branching from the downstream part thereof. Bypass valve 45 from the top of hot water tank 12
The bypass path 46 is connected to the heating return path 43 via. A small water storage section 47 is provided in the middle of the heating return path 43 to which the bypass path 46 is connected. The water storage section 47 has a water level detection sensor 47a for detecting the water level of the water storage tank 12 of the combustion can body 10, and a heating pressure relief valve 47b. Is provided. 48
Is a reserve tank, which replenishes water through the water storage section 47 when the water level decreases, such as when the water level in the hot water tank 12 decreases.

Reference numeral 50 denotes a controller,
1. It is communicatively connected to the bath remote control 62 and the heating remote control 63, and controls each part of the apparatus.

The hot water supply operation will be described based on the above configuration. Now, in a state where the main switch of the hot water supply operation is turned on by the hot water supply remote controller 61, the oil burner 13 is burned as necessary even if hot water supply by the actual hot water supply operation is not performed, and the combustion can body The water in the hot water storage tanks 12 is heated, and is brought into a standby state where the heat exchange heating of the water passing through the hot water supply heat exchange coil 22 can be performed at any time. Then, when the hot water supply terminal 29 is opened and the actual hot water supply is started, the water from the water inlet 21 is heated by the hot water in the hot water storage tank 12 by passing through the heat exchange coil 22 for hot water supply, and The hot water is supplied to the hot water supply path 2 through the hot water mixing means 25.
6 and flows out of the hot water supply terminal 29. Controller 5
0 is the incoming water temperature detected by the incoming water temperature sensor 21a of the incoming water passage 21, the incoming water flow detected by the incoming water flow rate sensor 21b, and the outgoing water temperature detected by the outgoing water temperature sensor 23a of the outgoing water passage 23 (normally higher than the set hot water supply temperature. ) And the set hot water supply temperature set by the hot water supply remote controller 61 by the user or the like, so that the hot water after the hot and cold water mixing becomes the set hot water supply temperature so that the water flowing through the bypass passage 24 and the hot water flowing through the hot water passage 23 are mixed. The ratio is calculated, and a command is issued to the hot and cold water mixing means 25 so that the calculated ratio is obtained. Thereby, the hot water from the hot water supply path 23 and the non-heated water from the bypass path 24 are mixed at an appropriate mixing ratio, become hot water at a predetermined hot water supply temperature, and flow into the hot water supply path 26. Further, when the switch of the bath reheating operation is turned on by the bath remote controller 62 or the like in a state where the main switch of the hot water supply operation is turned on by the hot water supply remote control 61, the circulation pump 34 is turned on,
Bath water is circulated through the bath outward path 31, the heat exchange coil 32 for bath reheating, and the bath return path 33, and the bath water passing through the heat exchange coil 32 for bath reheating is heat exchanged and heated by the hot water in the hot water storage tank 12. You. When the heating remote controller 63 is turned on, the circulation pump 44 is driven, and the hot water tank 1 is turned on.
The hot water in 2 is circulated through a heating circuit 40 to a heating terminal (not shown).

Next, an oil burner 1 according to an embodiment of the present invention.
The combustion control of No. 3 will be described with reference to FIG. now,
When the main operation switch of the apparatus is turned on by the hot water supply remote controller 61 or the like, the controller 50 first determines whether or not the bath reheating operation switch is on by the bath remote controller 62 (step S1).
When the bath reheating operation switch is ON and the reheating operation is being performed (YES in step S1), the oil burner 13 is burned at the maximum capacity of 25.5, and the hot water storage temperature is increased to the upper limit temperature (for example, 85 ° C.). ), The on / off control is performed such that the combustion is stopped and the combustion is restarted when the temperature falls to the lower limit temperature (for example, 75 ° C.) (step S2).

On the other hand, in the state where the main operation switch of the apparatus is turned on, if the bath reheating operation is not performed (No in step S1), the controller 50 determines whether the hot water supply operation is performed. (Step S
3) If the hot water supply operation is being performed (step S3)
Then, it is determined whether or not the hot water heating operation is also being performed (step S4). If the hot water supply operation is being performed but the hot water heating operation is not being performed (YES in step S3, S4 is not performed). No), the oil burner 13 is burned at the required number of burns necessary to supply hot water at the set hot water supply temperature, and when the hot water storage temperature reaches the upper limit temperature (for example, 85 ° C.), the combustion is stopped and the lower limit temperature (for example, 75 ° C.) ), The on / off control is performed so as to restart the combustion (step S).
5). The required number of combustions is calculated from the set hot water supply temperature, the detected incoming water temperature, and the detected incoming water flow rate.

On the other hand, when both the hot water supply operation and the hot water heating operation are being performed (Yes in step S3, Yes in S4), the total number of the required combustion number plus the provisional number required for the hot water heating is added. Burn the oil burner 13 by number,
When the hot water storage temperature reaches the upper limit temperature (for example, 85 ° C.), the on / off control is performed so that the combustion is stopped, and when the temperature falls to the lower limit temperature (for example, 75 ° C.), the combustion is restarted (step S6). Here, the provisional number required for hot water heating is the maximum number required when the hot water heating operation is performed alone, and may be, for example, 15.

When the main driving switch is turned on and neither the bath reheating operation nor the hot water supply operation is performed (No in step S1 and No in S3), that is, the hot water heating operation is performed alone. When the vehicle is in the ON state or when only the main operation switch is ON and none of the operations is performed, the controller 50 first ignites the oil burner 13 with the ability at the time of ignition (for example, No. 9), and then for a predetermined time (for example, 10 seconds) ), The burning capacity of the burner 13 is adjusted so that the hot water storage temperature reaches a target maintenance temperature (for example, 80 ° C.), and the hot water storage temperature is raised to an upper limit temperature (for example, 85 ° C.). ), The combustion is stopped, and the on / off control is performed so that the combustion is restarted when the temperature falls to the lower limit temperature (for example, 75 ° C.) (step S7).

Next, the combustion control of the oil burner 13 according to another embodiment of the present invention will be described with reference to FIG.
Now, when the main operation switch of the apparatus is turned on, the controller 50 first sets an A flag indicating whether or not the temperature of the hot water tank 12 has once been heated to a predetermined target maintenance temperature (for example, 80 ° C.). On / off is determined (step S11). Normally, immediately after the main operation switch is turned on, the hot water storage tank 12 is not yet heated and the A flag is off (No in step S11, No in S12). (For example, No. 25.5), the combustion of the oil burner 13 is started (step S13). By combustion at the maximum capacity,
When the temperature of the hot water tank 12 reaches the upper limit temperature (for example, 85 ° C.) (Yes in Step S12), the controller 50 temporarily stops the combustion of the oil burner 13 (Step S14).
The A flag is turned on (step S15). A
Once the flag is turned on, it does not turn off until the main operation switch is turned off.

After the A flag is once turned on (Yes in step S11) as described above, during the hot water supply operation (Yes in step S16), the controller 50 sets the oil number to the required combustion number plus α. The burner 13 is burned, and the on / off control is performed so as to stop the combustion when the hot water storage temperature reaches the upper limit temperature (for example, 85 ° C.) and restart the combustion when the hot water storage temperature falls to the lower limit temperature (for example, 75 ° C.) (step S17). Here, the required number of combustions is calculated from the set hot water supply temperature, the detected incoming water temperature, and the detected incoming water temperature. Also, the number of α numbers is determined in advance to be 2 or 3. Further, when the A flag is on and the hot water supply operation is not being performed (Yes in step S11,
(No in S16) is to burn the oil burner 13 with the number corresponding to the hot water storage temperature, stop the combustion when the hot water storage temperature reaches the upper limit temperature (for example, 85 ° C.), and stop the combustion at the lower limit temperature (for example, 75 ° C.).
C.), on / off control is performed so as to restart combustion (step S18). Here, the number according to the hot water storage temperature is, for example, when the temperature of the hot water storage tank 12 is 40 ° C., the maximum number is 25.5, and when the temperature of the hot water storage tank 12 is 45 ° C., it is 22. When the temperature is lower, the capacity is higher, and when the temperature of the hot water storage tank 12 becomes equal to or higher than a predetermined target maintenance temperature (for example, 80 ° C.), it can be set to No. 10 (a value close to the minimum number).
When the main operation switch is turned off (Yes in step S19), the A flag is turned off (step S20).

A combustion control of the oil burner 13 according to another embodiment of the present invention will be described with reference to FIG.
Now, when the main operation switch of the apparatus is turned on (Yes in step S31), the controller 50 first determines whether or not the hot water storage temperature is lower than a predetermined target maintenance temperature, for example, 80 ° C. (step S32). , (Yes in step S32), the oil burner 13 is burned with the maximum number, for example, 25.5 (step S33).
On the other hand, in this embodiment, even if the main operation switch is in the off state (No in step S31), if the heating operation switch is turned on by the heating remote controller 63 or the heating operation switch at the heating terminal (not shown) is turned on. (Yes in step S34), the hot water heating operation can be performed alone. When the hot water heating operation is solely performed, the controller 50 switches the oil burner 13 at a medium number, for example, No. 15 until the hot water storage temperature reaches the target maintenance temperature (for example, 80 ° C.) (Yes in step S35). The fuel is burned (step S36). In step S33, combustion is performed with at least a fixed high capacity (for example, No. 25.5). In the case of the hot water heating operation alone, heating can be sufficiently performed even with a fixed number lower than that. Performing the hot water heating operation alone can reduce noise. In step S32, after the hot water storage temperature has once reached the target maintenance temperature (No in step S32), the oil burner 13 is controlled by the normal control (step S37). In this normal control, combustion is performed at a relatively low fixed number, for example, No. 10, and when the hot water storage temperature reaches the upper limit temperature (for example, 85 ° C.), the combustion is stopped, and when the temperature falls to the lower limit temperature (for example, 75 ° C.), the combustion is restarted. , On / off control can be performed. In the present embodiment, since the hot water heating alone can be operated by the heating remote controller 63 or the like even when the main operation switch is off, the hot water heating remote controller 61 or the like has a function of reducing the number and burning when using the hot water heating operation alone. There is no need to provide a switch, leading to cost reduction.

The combustion control of the oil burner 13 according to another embodiment of the present invention will be described with reference to FIG.
In this embodiment, when the main operation switch or the heating operation switch is turned on, the controller 50 first determines whether or not the hot water storage temperature is lower than a target maintenance temperature (for example, 80 ° C.) (step S41). Step S41
If the hot water storage temperature is lower than the target maintenance temperature (yes in step S41), the heating operation switch is further turned on (yes in step S42), the hot water supply operation is not performed (no in step S43), and the bath is returned. When the reheating operation is not performed (No in step S44), that is, in the case of the single operation of the hot water heating operation, the control 50 has a medium number until the hot water storage temperature reaches the target maintenance temperature (for example, 80 ° C.). For example, the oil burner 13 is burned by No. 15 (step S45). On the other hand, when the hot water heating operation is not solely performed (No in step S42, Yes in S43, Yes in S44), the maximum number of hot water storage units, for example, 25.degree.
No. 5 burns the oil burner 13 (Step S4)
6). In this case, in step S46, combustion is performed with at least a fixed high capacity even if the number is not the maximum number.
In the case of the hot water heating operation alone of 45, heating can be sufficiently performed even with a certain number lower than the certain high capacity, and by performing such hot water heating operation alone,
Noise can be reduced. After the hot water storage temperature becomes equal to or higher than the target maintenance temperature in step S41 (No in step S41), normal control is performed (step S47). In the normal control, for example, when the hot water heating operation is performed alone or when neither operation is performed, combustion is performed at a relatively low fixed number, for example, 10 and the hot water storage temperature becomes the upper limit temperature (for example, 85 ° C.). , The on / off control can be performed so that the combustion is stopped and the combustion is restarted when the temperature falls to the lower limit temperature (for example, 75 ° C.). In other cases, when the hot water supply operation or the bath reheating operation is performed alone or simultaneously with other operations, the oil burner 13 is feedback-controlled with the number required for those operations, and the target maintenance temperature and the hot water storage. This can be performed by feedback-controlling the number according to the temperature difference between the temperatures.

[0027]

According to the present invention, there is provided a hot water supply apparatus having a combustion can body provided with a hot water tank, wherein at least hot water in the hot water tank is subjected to heat exchange heating.
It is equipped with hot water supply operation as a medium,
Equipment to enable hot water heating operation using hot water from a hot tub
Hot water supply device, and the bar
Burns with a capacity corresponding to the amount of heat required for hot water supply,
During simultaneous operation of hot water operation and hot water heating operation,
Temporary capacity required for hot water heating to the capacity according to the required amount of heat
Burning the burner with the total force applied, and
When the temperature of hot water in the hot water tank is within a certain temperature range,
Since the configuration in which on-off control to so that, the hot water supply operation
And hot water heating operation at the same time, the combustion capacity
Is insufficient and the hot water storage temperature falls below a certain temperature range.
Can be reliably prevented,
Combustion due to excess capacity and frequent on-off noise
Efficient maintenance of hot water storage temperature by reducing noise and combustion loss
Can be achieved. Further, according to the hot water supply apparatus according to claim 2, it has a combustion can body provided with a hot water storage tank, and in addition to the hot water supply operation and the bath reheating operation using at least hot water in the hot water storage tank as a heat exchange heating medium , a hot water storage tank Warm water using warm water
A hot water supply device equipped so as to be able to perform a bunch operation, and during the bath reheating operation, regardless of the presence or absence of other operations, burn the burner of the combustion can body with high capacity,
In addition, during the hot water supply operation when the bath reheating operation is not performed, the burner is burned with a capacity corresponding to the amount of heat required for hot water supply, and the hot water heating operation is performed simultaneously with the hot water supply operation.
If necessary, add the temporary capacity required for hot water heating.
By burning burner in total capacity was, and the combustion of the burner has a configuration for on and off control as the hot water temperature in the hot water tank is within a certain temperature range, the hot water supply operation and hot water warm
In addition to the cell operation, the wind using hot water in the hot water tank as a heat exchange heating medium
In a hot water supply device that can perform bath reheating operation,
During operation during combustion, regardless of the presence or absence of other operations, the combustion
The burner of the can is burned with high capacity. For this reason,
Since the hot water is quickly boiled to a high temperature and can be reliably maintained in a constant temperature range even at the high temperature, a sufficient bath input can be obtained, and the time for reheating can be shortened. Independent operation of hot water supply except during bath reheating operation
The combustion is performed with the capacity according to the amount of heat required for hot water supply,
Simultaneous hot-water supply operation and hot-water heating operation except during hot-water heating
In operation, the capacity required for hot water supply is required for hot water heating.
The burner is burned at the total capacity with the provisional capacity added.
Therefore, the burner is set to the maximum capacity, etc. except during the bath reheating operation.
In many cases, there is no need to drive on and off with high capacity,
Harshness and discomfort caused by the burner being frequently turned on and off or by a loud combustion noise can be eliminated. At the same time, the hot water in the hot water storage tank can be maintained in a convenient high temperature range within a predetermined range by efficient combustion according to the nature of each operation . According to the hot water supply device according to or claim 3, if in addition to the effects of the constitution described in claim 1 or 2, only if or hot water heating operation is not performed any operation is performed In the combustion by the burner of the combustion can body, when the heat retention and heating of the hot water storage tank is started, first, the combustion is started with the ability at the time of ignition of the burner,
Since the combustion capacity can be adjusted by a certain capacity every certain time and the temperature of the hot water tank is controlled to be within a certain range, when no operation is performed or only the hot water heating operation is performed. Is performed, by starting with combustion at a lower capacity and gradually increasing the capacity,
Noise can be reduced sufficiently. Further, in the case of the single operation of the hot water heating operation, the noise can be reduced by continuing the combustion with a low combustion capacity. Therefore, by not giving excessive capacity except when high capacity combustion is not required, the burner does not frequently turn on and off,
By reducing the combustion noise, it is possible to eliminate harshness and discomfort, and at the same time, to secure appropriate usability according to the type of operation by appropriate combustion according to the nature of each operation. Further, according to the hot water supply device according to claim 4 , by having a combustion can body provided with a hot water storage tank as a heat exchange medium tank, and disposing a hot water supply heat exchange unit of a hot water supply circuit in the hot water storage tank, A hot water supply apparatus in which water flowing in a heat exchange unit for hot water supply is secondarily indirectly heated by hot water in the hot water storage tank, and the temperature of the hot water in the hot water storage tank is within a certain temperature range during combustion of the burner. When the hot water storage tank is started to keep warm, the burner burns with high capacity until the temperature of the hot water tank reaches a certain temperature, regardless of the actual hot water supply operation. Once the temperature reaches the constant temperature, during the hot water supply operation, the burner burns with the capacity corresponding to the heat amount slightly added to the required hot water supply heat amount, and according to the temperature of the hot water storage tank during the non-hot water supply operation. Burner burn ability Therefore, in a hot water supply device that heats and heats hot water using hot water in a hot water storage tank as a heat exchange medium, when the heat retention and heating of the hot water storage tank is started, first, the burner is burned with high capacity until the hot water storage temperature reaches a certain temperature. Thus, the hot water tank can be quickly boiled. Therefore, even when the actual hot water supply operation is started early, hot water supply at a predetermined temperature can be performed promptly in response thereto. Moreover, once the hot water storage tank reaches a certain temperature, the burner can be burned with the capacity corresponding to the heat amount slightly higher than the required hot water supply amount during use of hot water supply, so that the required hot water supply amount can be reliably obtained. In addition, it is possible to prevent the hot water in the hot water tank from quickly rising to the upper limit temperature and stopping the combustion. Accordingly and as described above, it is divided at the time of non-hot-water supply operation and when the hot water supply operation after providing hot water of the hot water tank has once reached a certain temperature and until it reaches a certain temperature, it is possible to perform the operation of each of the preferred burner , Combustion noise and other burner noise can be reduced .

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water supply apparatus according to an embodiment of the present invention.

FIG. 2 is a combustion control flow chart of a burner according to the embodiment of the present invention.

FIG. 3 is a combustion control flow chart of a burner according to another embodiment of the present invention.

FIG. 4 is a combustion control flow chart of a burner according to still another embodiment of the present invention.

FIG. 5 is a combustion control flow chart of a burner according to still another embodiment of the present invention.

[Explanation of symbols] 10. Combustion can body 11 Combustion chamber 12 Hot water storage tank 12a Hot water storage temperature sensor 13 Oil burner 20 Hot water supply circuit 21 Waterway 21a Incoming water temperature sensor 21b Incoming water flow sensor 22 Heat exchange coil for hot water supply 23 Deyuro 24 Bypass Road 25 Hot water mixing means 26 Hot water supply channel 26a Hot water supply temperature sensor 27 Hot water path for bathtub 28 Total flow control means 29 Hot water supply terminal 30 Circulation circuit for bath reheating 40 heating circuit 50 Controller 61 Remote control for hot water supply 62 bath remote control 63 heating remote control

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24D 3/08 F23N 5/00 F24D 17/00 F24H 1/00 602 F24H 1/18 302

Claims (4)

(57) [Claims] 1. A has a combustion boiler body provided with a hot water tank, less
Hot water supply operation using hot water in the hot water storage tank as heat exchange heating medium
And hot water from the hot water tank.
A hot water supply system that can be operated with hot water heating
During the hot water operation alone, the burner heats
Combustion with the capacity according to the amount, hot water supply operation and hot water heating operation
During simultaneous operation of rolling, the capacity depends on the amount of heat required for hot water supply.
Total capacity of power plus temporary capacity required for hot water heating
And burn the burner in the hot water tank
ON / OFF system to keep the hot water temperature within a certain temperature range
Water heater, characterized in that the arrangement for control. 2. A hot water tank having a combustion can body provided with a hot water storage tank and using hot water in the hot water storage tank in addition to a hot water supply operation and a bath reheating operation using at least the hot water in the hot water storage tank as a heat exchange heating medium.
A hot water supply device that is equipped to perform a heating operation ,
During the bath reheating operation, the burner of the combustion can body is burned with high capacity regardless of the presence or absence of other operations, and during the hot water supply operation when the bath reheating operation is not performed, the burner is turned off. Combustion is performed with the capacity corresponding to the amount of heat required for hot water supply, and hot water heating operation is performed simultaneously with hot water supply operation.
If it is done in the
A hot water supply apparatus characterized in that the burner is burned with the added total capacity, and the burning of the burner is controlled to be on / off so that the temperature of hot water in the hot water tank falls within a certain temperature range. 3. If no driving is performed,
If only hot water heating operation is performed,
Combustion by the heater, when the heat retention and heating of the hot water tank is started,
First, combustion is started with the burner's ignition capacity,
So that the force can be adjusted by a certain amount every certain time
The hot water supply device according to claim 1 or 2, wherein the temperature of the hot water storage tank is controlled to be within a certain range . 4. A fuel tank having a hot water storage tank as a heat exchange medium tank.
A hot water supply heat exchange unit for a hot water supply circuit,
The water in the hot water supply heat exchange section is
Secondarily indirectly heated by hot water in hot water tank
In the hot water supply device, the burner burns the hot water temperature in the hot water tank.
Is controlled to keep the temperature within a certain temperature range.
At the same time, the heating and heating of the hot water storage tank is started.
And, regardless of the actual hot water supply operation,
Until the temperature reaches a certain temperature, burner combustion with high capacity
Once the temperature has reached the certain temperature,
During rolling, it corresponds to the heat amount slightly higher than the required hot water supply heat amount.
The burner is burned with the capacity of
Combustion of the burner with the ability according to the temperature is characterized.
Hot water supply apparatus that.