JP5323363B2 - Neutralizing device, combustion device equipped with neutralizing device, and control method of neutralizing device - Google Patents

Description

The present invention relates to, for example, a neutralization device that neutralizes drain (water) that is generated along with latent heat recovery in a latent heat recovery type combustion device, a combustion device that includes the neutralization device, and a control method for the neutralization device .

  In recent years, in addition to a primary heat exchanger heated by a combustion device, a secondary heat exchanger that recovers latent heat of combustion exhaust that has heated the primary heat exchanger when performing additional combustion and / or hot water supply combustion in a bath That is, a hot water supply apparatus having a latent heat recovery heat exchanger has been developed (see Patent Document 1).

  In FIG. 1 of the hot water supply device of Patent Document 1, a tray 14 as a drain receiver is disposed between a primary heat exchanger 12 and a secondary heat exchanger 13. The tray 14 receives drain (water) generated when the latent heat is recovered by the secondary heat exchanger 13. This drain is a condensation of water vapor in the combustion exhaust gas, and is an acid water having a pH of 2.5 to 3. If drained as it is, it will dissolve the concrete and cause metal corrosion.

Therefore, in Patent Document 1, drain accumulated in the tray 14 is guided to the neutralizer 30 via the drain pipe 15.
The neutralizer 30 contains a neutralizing agent, and the drainage is neutralized. The neutralized drain is drained together with residual water and the like.
Moreover, such a neutralizer is provided with a water level electrode 647 as shown in FIG. 4 of Patent Document 2, for example, and the drain accumulated in the neutralizer (expansion tank 64 in Patent Document 2) is outside. It is configured to prevent overflowing.
FIG. 11 is a schematic view showing the configuration of such a neutralizer. In such a neutralizer 1, the drain accommodated in a tray 14 disposed below the secondary heat exchanger 13 is shown. However, the drain which is led into the neutralizer body 2 through the drain pipe 3 and neutralized in the neutralizer body 2 is discharged from the drain discharge port 4.
Further, a liquid level sensor 5 is disposed on the neutralizer body 2 as shown in the figure, and when the neutralizer body 2 is full of drain, the liquid level sensor 5 detects the liquid level and the like. However, the operation of the water heater is stopped as an error.

JP2007-120869A JP2002-13754

However, even if the liquid level sensor 5 shown in FIG. 11 detects the liquid level accumulated in the neutralizer body 2, it does not mean that drain has accumulated in the entire neutralizer body 2, but neutralizes temporarily. In many cases, the flow of drain in the vessel body 2 has only deteriorated. In this case, if the operation is continued for a while, the liquid level of the drain is lowered, and the liquid level of the drain is often not in contact with the liquid level sensor 5.
Even in such a case, if the liquid level sensor 5 detects the liquid level, and then gives an error after a certain period of time and stops the operation of the combustion device, the combustion device is frequently stopped, which is great for the user. There was a problem of inconvenience.
On the other hand, even if drain is accumulated in the entire neutralizer body 2 shown in FIG. 11, the drain pipe 3 is connected to the upper part of the drain of the neutralizer body 2. As long as the drain remains, the drain will not overflow. For this reason, in the state where the neutralizer body 2 is filled with drain, it is an unnecessary stop to give an error and stop the combustion apparatus, and there is also a problem that the combustion apparatus becomes difficult to use for the user.

Accordingly, the present invention provides neutralizing device which can maximize the capacity of the drain neutralization apparatus of neutralizer such has, combustor and neutralizing apparatus comprising such a neutralizer It is an object to provide a control method.

The above object is provided in a combustion apparatus including a piping system that supplies hot water heated by a combustion unit, and the latent heat is recovered by a latent heat recovery heat exchanger that recovers the latent heat of exhaust gas generated in accordance with the combustion of the combustion unit. A neutralizer for neutralizing drain generated when recovering water, a neutralizer body configured to be capable of disposing a neutralizer therein, a drain receiving portion for receiving drain, and the drain An introduction part for guiding the drain received by the receiving part to the neutralizer body, and having the maximum capacity information that prevents the drain received by the drain receiving part from overflowing from the drain receiving part. And a maximum capacity determination unit for determining whether or not the amount of drain received by the drain capacity exceeds the maximum capacity, and the neutralizer body is filled with drain in the neutralizer body. Notification of charge information Has a notification unit or the Max amount determination unit, on condition that the notification unit is informed of the charges information, amount of drainage that is received in the drain receiving part exceeds the maximum storage amount It is configured to determine whether or not, and when the full information is not output from the notification unit, it is configured to reset the accumulated amount information of the drain accumulated in the introduction unit Achieved by summing device.

According to the above configuration, the drainage received in the receiving part has the maximum capacity information that does not overflow from the receiving part, and determines whether the drainage received in the drain receiving part exceeds the maximum capacity. A maximum capacity determination unit.
The maximum capacity that can store the drain in the neutralizer is, for example, when the drain is filled in both the neutralizer body and the introduction section. Therefore, in the said structure, it can be judged whether the drain was filled not only in the neutralizer main body but also in the introduction part.
In this regard, conventionally, when the neutralizer body is filled with drain, the liquid level sensor detects the drain liquid level, etc., and prevents the drain in the neutralizer body from overflowing to the outside. The operation of was stopped. For this reason, a combustion apparatus stopped frequently and there was a possibility that it might become inconvenient for a user.
However, in the above-described configuration, the combustion device does not stop only by filling the drain in the neutralizer body, and the operation of the combustion device stops, for example, in both the neutralizer body and the introduction portion. Therefore, the combustion apparatus is easy to use for the user.
Moreover, even if the drain is filled in the neutralizer body and then the drain is accommodated in the introduction portion, the drain can be prevented from overflowing to the outside in the above configuration.
In this way, the drain storage capacity of the neutralizing device can be maximized.
Further, when the charging information is not output from the notification unit, it indicates that the drain that has been filled in the neutralizer body due to the temporary stagnation of the drainage has started to be discharged normally. In this case, since the drain is not accumulated in the introduction part, the accumulated accumulation amount information is reset, and the drain accommodation capacity of the neutralizing device can be exhibited to the maximum.

Preferably, before Symbol Max amount information is the introduction part Max amount information that can be accommodated in the maximum drain to the introduction part, at least, the storage amount information per unit time the drain is accumulated in the inlet portion, A cumulative accumulation amount calculation unit that calculates cumulative accumulation amount information that is an accumulation amount of drain in elapsed time based on time information and fullness information of the notification unit, and the maximum accommodation amount determination unit is at least, The neutralization device is characterized in that the determination is made based on the introduction portion maximum accommodation amount information and the cumulative accumulation amount information.

According to the above configuration, the accumulated amount calculating unit that calculates the accumulated amount information that is the accumulated amount of drain in the elapsed time based on the accumulated amount information per unit time, the time information, and the full information of the notification unit is provided. doing.
For this reason, the accumulated accumulation amount calculation unit can grasp that the drain is filled in the neutralizer body with the filling information of the notification unit, this is, the drain filled in the neutralizer body, It will accumulate in the introduction part.
Further, the accumulated accumulation amount calculation unit can calculate how much drain is accumulated in the introduction unit during the elapsed time, that is, accumulated accumulation amount information, from the accumulation amount information per unit time and the time information. .

And according to the said structure, it becomes the structure which a maximum accommodation amount judgment part judges based on introduction part maximum accommodation amount information and the said cumulative accumulation amount information.
That is, since the maximum amount of drain that can be accommodated in the introduction unit can be grasped based on the introduction unit maximum accommodation amount information, the introduction unit maximum accommodation amount information is compared with the cumulative accumulation amount information, and the cumulative accumulation is performed. It is determined whether the amount information exceeds the introduction unit maximum capacity information, and if it exceeds, the drain is filled in the introduction unit.
Therefore, when it exceeds such a range, it is possible to prevent the drain from overflowing from the receiving portion by immediately stopping the operation of the combustion device or the like.
Thus, in the above-described configuration, the maximum capacity determination unit can determine whether drain has started to accumulate in the introduction unit, and whether the drain is filled in the introduction unit and may overflow. The drainage capacity of the neutralization device can be efficiently exhibited to the maximum.

  Preferably, the accumulation amount calculation unit stops the calculation of the accumulated accumulation amount information when there is no output of combustion state information of the combustion unit.

According to the above configuration, the accumulation amount calculation unit stops the calculation of the accumulated accumulation amount information when there is no output of the combustion state information of the combustion unit.
That is, when the combustion part is not in a combustion state, no drain is generated during that time, and therefore, the accumulated amount information can be made accurate by not calculating the accumulated amount information of drain during that time. Yes.

  Preferably, the maximum accommodation amount information is introduction portion maximum accommodation amount information capable of accommodating the drain in the introduction portion to the maximum, and is generated based on at least the difference temperature information and flow rate information between the incoming water temperature information and the tapping temperature information. On the basis of the output information indicating that the energy of the combustion unit has been converted into hot water, increased accumulation amount information in which drain is accumulated in the introduction unit is generated, and at least the increased accumulation amount information and the notification unit A cumulative increase accumulation amount information calculation unit that calculates cumulative increase accumulation amount information that is a drain accumulation amount based on the charge information is provided, and the maximum accommodation amount determination unit includes at least the introduction unit maximum accommodation amount information and the The neutralization apparatus is characterized in that a determination is made based on cumulative increase accumulation amount information.

According to the said structure, a maximum accommodation amount judgment part judges based on the introduction part maximum accommodation amount information and cumulative increase accumulation amount information at least.
That is, since the accumulated increase accumulation amount information of the drain is generated based on the output information indicating that the energy of the combustion unit is actually converted into hot water, the maximum capacity determination unit starts to accumulate drain in the introduction unit. And whether or not there is a possibility of overflowing and overflowing in the introduction section, the drainage capacity of the neutralizer can be maximized efficiently. Can be made.

  Preferably, it has latent heat output information generated based on latent heat distribution information which is information of the latent heat included in the output information, and the increased accumulation amount information includes at least the output information, The neutralization device is generated based on latent heat output information.

  According to the above configuration, since the increased accumulated amount information is generated based on at least the output information and the latent heat output information, the accumulated increased accumulated amount information that is the accumulated amount of drain is more accurately calculated. can do.

The object is to obtain the latent heat by a combustion part, a piping system that supplies hot water heated by the combustion part, and a latent heat recovery heat exchanger that recovers the latent heat of exhaust gas generated by the combustion of the combustion part. A neutralizing device for neutralizing drain generated during recovery, and a neutralizer body configured to be capable of disposing a neutralizing agent therein, and drain receiving for receiving the drain And an introduction part that guides the drain received by the drain receiving part to the neutralizer body, and the drain received by the drain receiving part does not overflow from the drain receiving part. The neutralization body has a maximum capacity determination unit for determining whether or not the drain amount received by the drain reception unit exceeds the maximum capacity, and the neutralizer body includes the neutralizer body Filling information that is the information filled with drain The maximum capacity determination unit is configured so that the drain amount received by the drain receiving unit is set to the maximum capacity on the condition that the notification unit is reporting the fullness information. has a structure for determining whether exceeds, when the filling information from said notification unit is not output, characterized in that it is configured to reset the accumulated amount information of the drain accumulated in the introduction part This is achieved by the combustion device.

The above object is provided in a combustion apparatus including a piping system that supplies hot water heated by a combustion unit, and the latent heat is recovered by a latent heat recovery heat exchanger that recovers the latent heat of exhaust gas generated in accordance with the combustion of the combustion unit. A neutralizing device control method for neutralizing drain generated when recovering the neutralizing device , wherein the neutralizing device has a structure in which a neutralizing agent can be disposed inside, and a drain. A drain receiving portion for receiving the drain receiving portion, and an introduction portion for guiding the drain received by the drain receiving portion to the neutralizer body, wherein the neutralizer body is filled with drain. has a notification unit for notifying the filled information is information, said has a maximum storage amount information has never accepted a drain in the drain receiving portion overflows from the drain receiving portion, the maximum storage amount determining portion, wherein The notification section is reporting that the charge information , The amount of drainage that is received in the drain receiving unit determines whether more than said maximum storage capacity, when the filling information from said notification unit is not output, the accumulation amount of the drain accumulated in the introduction part is achieved by the control method of the neutralizer characterized that you have a configuration to reset the information.

The present invention relates to a neutralizing device capable of maximizing the capacity of the drain of a neutralizing device such as a neutralizer, a combustion device including such a neutralizing device, and control of the neutralizing device. There is an advantage that a method can be provided.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. As long as there is no description of the effect, it is not restricted to these aspects.

(First embodiment)
FIG. 1 is a schematic system diagram showing a main configuration of a combustion apparatus 40 according to the first embodiment.
In FIG. 1, a combustion apparatus 40 has an apparatus main body 41 made of an equipment case or the like. A neutralizer 70 is connected to the combustion apparatus 40, and the neutralizer 70 is accommodated in the apparatus main body 41. The neutralizer 70 may be disposed outside the apparatus main body 41.
In addition, as shown in FIG. 1, the combustion apparatus 40 includes, for example, a pipe 49 that is a pipe that introduces water and discharges (supply) heated hot water.

The combustion device 40 has a combustion chamber 43 for heating water in the pipe 44. As shown in FIG. 1, for example, a burner 53 that is a combustion section is disposed in the combustion chamber 43, and a primary heat exchanger 54 is disposed above the burner 53, for example.
The primary heat exchanger 54 is a part of the pipe 44, and a large number of fins (not shown) for heat exchange are installed in the pipe 44.
On the other hand, as shown in FIG. 1, a gas pipe 51 is connected to the burner 53, and fuel gas is supplied through a gas proportional valve 52.
For this reason, when gas is supplied to the burner 53 and the gas is combusted, heat is exchanged by the primary heat exchanger 54 thereabove, and the water in the pipe 44 is heated to become hot water.

Moreover, the combustion chamber 43 also has the secondary heat exchanger 56, as shown in FIG. Similar to the primary heat exchanger 54, the secondary heat exchanger 56 is formed of a part of the pipe 44 and has concave and convex fins for heat exchange.
And this secondary heat exchanger 56 is arrange | positioned in the front | former stage of the exhaust passage 75 of FIG. 1 while being arrange | positioned at the back | latter stage of the primary heat exchanger 54. FIG. As described above, the secondary heat exchanger 56 is configured to recover the latent heat of the exhaust gas generated by the combustion of the burner 53.
In other words, the secondary heat exchanger 56 is provided at a position where it comes into contact with the combustion exhaust after heat exchange by the primary heat exchanger 54 due to combustion of the burner 53, and becomes a latent heat recovery heat exchanger. Yes.
Thereby, the secondary heat exchanger 56 absorbs the latent heat in the combustion exhaust gas by heat exchange, and heats the hot water flowing in the pipe 44.
In addition, these 1st, 2nd heat exchangers can also be comprised so that a fin may not be provided.

By the way, when the secondary heat exchanger 56 exchanges latent heat in this way, water vapor present in the combustion exhaust is condensed on the surface of the secondary heat exchanger 56 having a low temperature, and drain (water) is dripped. Become. The drain dripped in this way is acidic drain water containing nitrogen oxides. For this reason, if such drain water is discharged to the combustion device 40 as it is, there is a possibility of rusting the metal.
For this reason, as shown in FIG. 1, in the combustion apparatus 40 of the present embodiment, for example, a receiving tray 57 that is a receiving portion that receives drain water is disposed immediately below the secondary heat exchanger 56.
And this drain water becomes the structure guided, for example to the neutralizer 70 which is a neutralizer main body via the drain piping 76 which is the introduction part of FIG. FIG. 2 is a schematic diagram showing the configuration of the neutralizer 70 and the like of FIG.
As shown in FIG. 2, a neutralizer 97 for neutralizing drain water is disposed in the neutralizer 70. The neutralizer 97 is preferably, for example, calcium carbonate granules.
As described above, the drain water introduced into the neutralizer 70 is neutralized by the neutralizing agent 97 and then discharged from the drain outlet 96 of FIG.
The detailed configuration of the neutralizer 70 will be described later.

Here, the other configuration of the pipe 44 of FIG. 1 not described above will be mainly described.
In the pipe 44, the clean water that has entered from the water intake pipe 45 in FIG. 1 is first guided to the secondary heat exchanger 56, heated by latent heat recovery, and the warm water that has been heated is further guided to the primary heat exchanger 54. The hot water heated by the primary heat exchanger 54 is discharged from the hot water outlet pipe 47 through the hot water tap 48 at a predetermined temperature.
A bypass pipe 46 is provided in the water inlet pipe 45 and the hot water outlet pipe 48.

Next, the configuration of the neutralizer 70 will be described in detail with reference to FIG.
The neutralizer 70 is provided with a vertically or horizontally long container-like or box-shaped main body 91, which is formed of, for example, a molded product of synthetic resin such as polyethylene or polypropylene, etc. An appropriate material is selected in consideration of waterproofness, necessary heat resistance, mechanical durability, and the like.
Further, the neutralizing agent 97 as described above is accommodated therein, and a volume capable of exhibiting a sufficient neutralizing ability is provided by passing the drain.

A drain pipe 76 for introducing drain water is connected to the neutralizer 70, and a water level sensor 80 is disposed in the vicinity (or adjacent) of a portion to which the drain pipe 76 on the upper part of the neutralizer 70 is connected. Has been.
The water level sensor 80 is configured so that the drain water accumulated in the neutralizer 70 is not discharged (or hardly discharged) from the drain discharge port 96 for some reason, and the drain water is filled in the neutralizer 70. It is an example of the alerting | reporting part for detecting that it was filled with water, and alerting | reporting.
That is, the drain water accumulated in the neutralizer 70 is a hatched portion in FIG. 2, and when the drain water further accumulates in the neutralizer 70, the drain drain port 96 and the like are clogged.
By detecting the abnormality of the drain water level in this way, the abnormal situation can be easily grasped, and the unneutralized drain water in the neutralizer 70 is discharged out of the neutralizer 70 by mistake. It is the composition which prevents being done.

Further, as shown in FIG. 2, the neutralizer 70 is provided with a partition 71 that partitions the neutralizer 70. This is because, since the exhaust passage 75 and the neutralizer 70 in FIG. 1 communicate with each other via the tray 57 and the drain pipe 76, the drain water in the neutralizer 70 is pushed out from the drain outlet 96 by the exhaust pressure. There is a fear.
Therefore, it is necessary to seal the inside of the neutralizer 70 in order to counter such exhaust pressure, and a partition 71 is formed for this water sealing.

Incidentally, as described above, the water level sensor 80 of FIG. 2 is arranged to detect (notify) that the neutralizer 70 is filled with drain water. Even if the neutralizer 70 is drain water. Even if the water is filled and drain water is supplied through the tray 57, the drain water does not immediately leak out from the drain piping system (the drain drain path from the tray 57).
That is, when the neutralizer 70 is filled with drain water, the drain water is then accumulated in the drain pipe 76 of FIG. And after the inside of the drain piping 76 is filled with drain water, it overflows from the tray 57 and leaks outside.

For this reason, in the present embodiment, after the neutralizer 70 is filled with the drain water, the drain water is accumulated in the drain pipe 76 and / or the tray 57 to the maximum, and before the drain water overflows from the tray 57, “ An “error” signal is output to stop the operation of the combustion device 40 and the like.
Accordingly, since the “error” signal is not output at the stage where the neutralizer 70 is filled with drain water as in the prior art, in this embodiment, the combustion apparatus does not stop frequently and is used by the user. It becomes the easy combustion apparatus 40.

FIG. 3 is a schematic block diagram showing a characteristic configuration of the combustion apparatus 40 of the present embodiment. In addition to the burner 53 and the water level sensor 80 shown in FIGS. 1 and 2, the combustion device 40 includes, for example, a combustion timer 100 that is a timing device, a CPU (Central Processing Unit), a RAM ( A computer including a random access memory (Random Access Memory) and a ROM (Read Only Memory) is provided.
Therefore, FIG. 3 is a schematic block diagram showing a state in which components such as the burner 53 of the combustion apparatus 40 and the operation thereof are controlled by a computer or the like.
FIG. 4 is a schematic flowchart showing main operations and the like of the combustion apparatus 40 of the present embodiment.
Hereinafter, the main operation and the like of the combustion apparatus 40 of the present embodiment will be described according to the schematic flowchart of FIG. 4, and the contents of the schematic block diagram of FIG. 3 will also be described.

First, when the user of the combustion device 40 operates the combustion device 40, the combustion device operation control unit 101 of FIG. 3 operates to burn the burner 53.
Then, the combustion integration timer 100 is reset in ST1 of FIG. That is, the combustion integration timer program of the combustion integration timer control unit 102 in FIG. 4 operates and the combustion integration timer 100 is reset to “0”, for example. For this reason, the combustion integration timer 100 accurately integrates the combustion time of the burner 53.
Next, the process proceeds to ST2 in FIG. In ST2, it is determined whether or not the water level sensor 80 has detected the water level of the drain water. Specifically, it is determined whether the water level sensor management program of the water level sensor management unit 103 in FIG. 3 operates and the water level sensor 80 has detected the level of the drain water filled in the neutralizer 70.
That is, when drain water accumulates beyond the shaded portion of the neutralizer 70 in FIG. 2 and the level of the drain water reaches the water level sensor 80, the neutralizer 70 has already been filled with drain water. I understand that.
On the contrary, when the water level sensor 80 does not detect the liquid level, it can be seen that there is still a margin for storing drain water in the neutralizer 70.

In ST2, when the water level sensor 80 does not detect the water level of the drain water, the integrated drain amount data management program of the integrated drain amount data management unit 104 is operated, and the integrated drain amount data 105 is referred to. It is determined whether or not the data 105 is registered (ST3).
When the accumulated drain amount data 105 has already been registered, the accumulated drain amount data management program or the like operates to delete and reset the already registered accumulated drain amount data 105 (ST4).
That is, the loaded drain amount data 105 is an example of accumulated accumulation amount information, and this data indicates the amount of drain water accumulated in the drain pipe 76 of FIG. However, when the water level sensor 80 does not detect the water level, it indicates that the drain water remains in the neutralizer 70 and has not yet reached the drain pipe 76.
For this reason, in ST4, the accumulated drain amount data 105 is reset.

Next, when the water level sensor 80 detects the water level of the drain water in ST2, the process proceeds to ST5. The water level sensor 80 is an example of a notification unit, and a signal that detects the water level of the drain water is an example of the filling information of the notification unit.
In ST5, the burner combustion determination program of the burner combustion determination unit 106 in FIG. 3 operates to determine whether or not the burner 53 is in a combustion state. Specifically, for example, the determination is made based on whether or not the gas proportional valve 52 in FIG. 1 is open.
The reason for determining whether or not the burner 53 is in the combustion state is basically that the drain water is not dripped from the secondary heat exchanger 56 unless it is in the combustion state. If it is not in the combustion state, the process of generating (calculating) new accumulated drain amount data 105 is terminated to obtain highly accurate accumulated drain amount data 105.
In the present embodiment, as described above, whether or not the drain is generated is determined based on whether or not the gas proportional valve 52 in FIG. 1 is open. However, the present invention is not limited to this. The determination may be made based on whether or not it is time to generate drain within a predetermined time after the combustion is stopped. This is because even after combustion with the gas proportional valve 52 closed, drain may continue to be generated due to the difference between the water vapor temperature in the exhaust gas in the combustion chamber 43 and the surface temperature of the secondary heat exchanger 56. Because.

  When it is determined in ST5 that the burner 53 is combusting, since the drain water is in a state of dripping onto the tray 57, the combustion integration timer 100 of FIG. 4 operates and starts counting as shown in ST6. . Specifically, the combustion integration timer control program of the combustion integration timer control unit 102 in FIG. 3 operates and the combustion integration timer 100 starts counting.

Next, the process proceeds to ST7. In ST7, the amount of drain water accumulated in the drain pipe 76 of FIG. 2 is calculated. That is, the accumulated drain amount calculation unit 107 in FIG. 3 has elapsed based on the count data (an example of time information) of the combustion accumulation timer and the increased drain amount data (for example, 30 mL / min) per unit time in FIG. The amount of increase in drain water in the drain pipe 76 per hour is calculated, and the amount of increase in drain water obtained by this calculation is added to the accumulated drain amount data 105 of FIG. Register as
The increased drain amount data 108 per unit time is an example of accumulated amount information per unit time.

Next, the process proceeds to ST8. In ST8, it is determined whether or not the drain water is filled in the drain pipe 76 of FIG. Specifically, it is determined whether or not the drain amount data registered in the integrated drain amount data 105 exceeds the limit drain amount data 110 of FIG.
That is, the limit drain amount determination program of the limit drain amount determination unit 109 in FIG. Since the volume in the drain pipe 76 in FIG. 2 is known data in advance, this data is registered as limit drain amount data 110.
Therefore, even if a sensor or the like is not actually installed in the drain pipe 76, it can be accurately determined whether or not the drain water is filled in the drain pipe 76 by calculation.

  The limit drain amount determination unit 109 is an example of a maximum storage amount determination unit, and the limit drain amount data 110 is an example of maximum storage amount information.

If the accumulated drain amount data 105 does not exceed the limit drain amount data 110 in ST8, it can be determined that the drain water is not yet filled in the drain pipe 76, and the operation of the combustion device 40 is continued. For this reason, since the operation | movement of the whole combustion apparatus is not stopped only by the water level sensor of a neutralizer detecting drain water like the past, it is the combustion apparatus 10 easy to use for a user.
On the other hand, if the accumulated drain amount data 105 exceeds the limit drain amount data 110, if left as it is, the drain water will also fill the receiving tray 57, eventually overflowing, giving adverse effects such as metal corrosion of the equipment. End up. Therefore, in this case, the combustion apparatus 40 is stopped in ST9, and the drain water is prevented from being discharged outside the combustion apparatus 40 without being neutralized.

Next, the operation of FIG. 4 will be described with reference to the example of FIG. FIG. 5 is a schematic timing chart showing an operation example. The combustion of FIG. 5 is the combustion of the burner 53, and the water level sensor detection indicates that the water level sensor 80 has detected the water level of the drain water in the neutralizer 70, and the drain integrated amount is the integrated drain amount of FIG. Data 105 is shown. Here, it is assumed that the limit drain amount data 110 is “1000 mL”.
As shown in FIG. 5, while the water level sensor 80 does not detect the water level of the drain water, even if the burner 53 is combusting, the accumulated drain amount calculation unit 107 does not perform the calculation, so the accumulated drain amount is “0”. It is.
Thereafter, when the water level sensor 80 detects the water level, the integrated drain amount calculation unit 107 operates, and the drain integrated amount, that is, the integrated drain amount data 105 increases.
Thereafter, even if the water level sensor 80 detects the water level, when the combustion of the burner 53 stops, as shown in FIG. 5, the accumulated water amount is not increased. However, since the water level sensor 80 remains “ON”, the accumulated drain amount is not reset and is maintained as it is.
Thereafter, when the burner 53 starts to burn again, the accumulated drain amount is increased again, and when the limit drain amount data 110 “1000 mg” is exceeded, the operation of the combustion device 40 is stopped as an “error”.

Next, another example will be described with reference to FIG. FIG. 6 is a schematic timing chart showing another operation example. In FIG. 6, unlike FIG. 5, the water level sensor 80 is “OFF” on the way. Thus, when the water level sensor 80 becomes “OFF” in the middle, it indicates that the drain water filled in the neutralizer 70 is not filled due to an increase in the drain head water pressure, etc. In order to indicate that the drain water does not accumulate in the drain pipe 76, the drain accumulated amount, that is, the accumulated drain amount data 105 in FIG. 3 is once reset to “0”.
Thus, in this embodiment, as is clear from these two examples, the amount of drain water filling the drain pipe 76 can be calculated and grasped with high accuracy.

(Second Embodiment)
FIG. 7 is a schematic system diagram showing a main configuration of the combustion apparatus 140 according to the second embodiment. Many of the configurations and operations of the combustion apparatus 140 according to the present embodiment are the same as the configuration of the combustion apparatus 40 according to the first embodiment described above. Hereinafter, the difference will be mainly described.

As shown in FIG. 7, in this embodiment, for example, a water thermistor (TH) 141 that is a temperature measuring device that measures the temperature of the water that is introduced is disposed in the water intake pipe 45 of the combustion device 140. In addition, the water intake pipe 45 is also provided with, for example, a flow rate sensor 142 which is a water amount measuring device for measuring the amount of water introduced.
On the other hand, a hot water discharge thermistor (TH) 143 which is a temperature measuring device for measuring the hot water temperature is disposed in the hot water discharge pipe 47 on the hot water discharge side of the pipe 44.

FIG. 8 is a schematic block diagram showing a characteristic configuration of the combustion apparatus 140 according to the present embodiment, and FIG. 9 is a schematic flowchart showing main operations and the like of the combustion apparatus 140 according to the present embodiment.
Hereinafter, the main operation and the like of the combustion apparatus 140 of the present embodiment will be described according to the schematic flowchart of FIG. 9, and the contents of the schematic block diagram of FIG. 8 will also be described.
First, ST0 and ST1 in FIG. 9 are executed. That is, first, at ST0, it is determined whether or not the operation was stopped due to the previous water level detection. If the water level has been detected and the operation has not been stopped, the accumulated drain amount is reset in ST1.
Specifically, the integrated drain amount data 105 in FIG. 8 is reset by the integrated drain amount data management unit 104.
On the other hand, in ST0, when the water level was detected last time and the operation was stopped, the process proceeds to ST2 without resetting the integrated drain amount data 105. The operations in ST2 to ST6 are the same as those in FIG. 4 of the first embodiment described above. That is, when the burner 53 is burning in ST5, the combustion integration timer count is started in ST6, and then the steps ST11 to ST13 in FIG. 9 are executed.
However, in the first embodiment, when the burner 53 is not combusted in ST5, the process is finished as it is (see FIG. 4). However, in this embodiment, unlike the first embodiment, the burner is ST5. When 53 is not burning, it is configured that the water level sensor 80 detects the drain water level and the accumulated drain amount data 105 is stored.
As a result, when it is determined in ST0 of FIG. 9 that the water level was detected last time and the operation was stopped, the accumulated drain amount reset of ST1 is not executed, and the increased drain amount is based on the stored accumulated drain amount data 105 described above. The amount data 150 can be integrated, and the drain amount can be appropriately prevented from overflowing.
Unlike the present embodiment, a timer for measuring the operation interval of the combustion device 140 may be provided. In this case, when the water level detection by the water level sensor 80 is continued even though the estimated time of the operation interval (for example, 10 minutes) has elapsed, an error is displayed on the display device and notified. Therefore, it is possible to prompt the user etc. for maintenance appropriately.

ST11 to ST13 are characteristic parts of the embodiment of the present invention. In other words, in the first embodiment described above, the amount of drain accumulated in the drain pipe 76 is calculated based on the increased drain amount data 108 per unit time as shown in FIG. That is, the amount of drain that increases on the premise that a constant amount of drain accumulates for a certain period of time regardless of the degree of combustion of the burner 53 is determined.
However, in practice, the amount of drain generated by the exchange of latent heat in the secondary heat exchanger 56 increases or decreases due to a change in the combustion state of the burner 53.
That is, the combustion state of the burner 53 is an input, and the input thermal energy (kcal / h) is changed from water to hot water by heat exchange of the primary heat exchanger 54 and the secondary heat exchanger 56 in FIG. And output.
Of this output, the output of the secondary heat exchanger 56 is the latent heat, that is, the basis of the drain amount.
Therefore, in the present embodiment, the change in the amount of drain generated by the exchange of latent heat in the secondary heat exchanger 56 is grasped based on the above-described output.

Hereinafter, the process of grasping the increasing drain amount will be described in detail using ST11 to ST13.
First, in ST11, the total output calculation unit 144 in FIG. 8 is 1 second later based on the count data of the combustion integration timer 100, the incoming water temperature data of the incoming water TH141, the outgoing water temperature data of the outgoing hot water TH143, and the flow rate data of the flow rate sensor 142. The total output data 145 is calculated.
That is, in the present embodiment, since the total output data 145 is acquired every second, the total output calculation unit 144 executes the calculation every second of the combustion integration timer 100 of FIG.
This calculation is based on the following formula, for example. That is, “total output = (hot water temperature data (° C.) − Incoming water temperature data (° C.)) × flow rate data (L / min) × water specific gravity (4 ° C. kg / kg) × water specific heat (4.184) × 10 ⁻³ MJ / kg · K) ”.
In the present embodiment, the total output data 145 is calculated as follows based on this equation, and the calculation will be described using numerical examples.

As a numerical example, the tapping temperature data is “40 ° C.”, the incoming water temperature data is “10 ° C.”, and the flow rate data is “10 L / min”.
First, by subtracting 10 ° C (incoming water temperature data) from 40 ° C (outgoing water temperature data), the difference between the outgoing hot water temperature and the incoming water temperature is obtained, and this temperature difference is multiplied by the flow rate data of 10 L / min. By applying a given water specific gravity, water specific heat, etc., the output of the hot water heat-exchanged by the primary heat exchanger 54 and the secondary heat exchanger 56 by the input which is the heat of the burner 53, that is, The total output data 145 is calculated.
More specifically, “(40 ° C. (water temperature data) −10 ° C. (water temperature data)) × 10 L / min (flow rate data) × water specific gravity (g / kg) × water specific heat (4.184 MJ) / Kg · K) ”and the solution is“ 300 (° C · kg / min) ”.
In the present embodiment, since the total output data 145 is “kcal / h”, the solution “300 (° C. kg / min)” has a water specific heat (4. Multiplying by 184 × 10 ⁻³ MJ / kg · K) yields 18000 (° C · kg / h). Further, when this is multiplied by 1 kcal / ° C · kg, the final value is 18000 kcal / h.

By such a calculation operation of the total output calculation unit 144, the total output data 145, for example, 18000 kcal / h is obtained, and the data is registered as shown in FIG.
Next, the process proceeds to ST12 in FIG. 9, and latent heat output data 148 is obtained from the total output data 145 and the latent heat / sensible heat distribution map data 146 in FIG.
In other words, the total output data 145 obtained in ST11 is not only the latent heat exchanged by the secondary heat exchanger 56 to be acquired in the present embodiment, but also the heat exchange by the primary heat exchanger 54. Since sensible heat is also included, this step is a process of extracting the latent heat output from the entire output.

Specifically, the latent heat / sensible heat distribution map data 146 of FIG. 8 is data as shown in FIG. That is, the latent heat portion in the total output data 145 is indicated by, for example, a ratio or other numerical value.
FIG. 10 is a schematic diagram showing latent heat / sensible heat distribution map data 146.
Referring to FIG. 10, when the total output data 145 is 18000 kcal / h, it can be seen that the latent heat is 1000 kcal / h.
Thus, the total output data 145 and the latent heat / sensible heat distribution map data 146 are used to quickly and accurately grasp the latent heat output of the latent heat in the total output.
Such an operation of ST12 is executed by the latent heat output calculation unit 147 of FIG. 8, and the calculation result is stored as the latent heat output data 148 of FIG.
In the above example, the latent heat output data 148 is, for example, 1000 kcal / h.
The latent heat / sensible heat distribution map data 146 is an example of latent heat distribution information, and the latent heat output data 149 is an example of latent heat output information.

Next, the process proceeds to ST13. In ST13, the increased drain calculation unit in FIG. 8 calculates the increased drain amount data 150 based on the latent heat output data 148 obtained in ST12.
That is, in ST13, the amount of drain (water) actually generated is calculated from the latent heat output data 148 of FIG.
Specifically, the amount of increased drain is calculated by dividing the latent heat output data 148 by the latent heat of vaporization (kcal / kg). This latent heat of evaporation is obtained from the amount of latent heat of condensation at the saturation temperature, which is the temperature of the incoming water TH 141 provided in the incoming water pipe 45, and this saturated temperature changes.
However, in the present embodiment, the saturation temperature is set to a fixed value of 50 ° C., so that the latent heat of condensation is 2.3829 MJ / kg and the latent heat of evaporation is 570 kcal / kg.
Even if there is a difference in the saturation temperature, the difference in the amount of latent heat of condensation is small, so there is no influence on the calculation of the actual drain amount.
Therefore, the drain amount calculation unit 149 of FIG. 8 divides 1000 kcal (latent heat output data 148) by 570 kcal / kg (latent heat of evaporation) from the above example, and thus 1.7 kg / h, that is, 1.7 L / Increased drain amount of h.
The increased drain amount calculated in this way is stored as increased drain amount data 150 in FIG.
This increased drain amount data 150 is an example of increased accumulated amount information.

  Next, in ST14, the integrated drain amount calculation unit 107 in FIG. 8 calculates the integrated drain amount data 105 based on the increased drain amount data 150. This calculation is the same as the other processes except that the increased drain amount data 105 of the first embodiment is changed to the increased drain amount data 150 in the present embodiment.

  Thus, in the present embodiment, the increased drain amount data 150 is calculated based on the actual total output data 145, and the increased drain amount is accurately calculated according to the change in the total output data 145 at that time. Therefore, it is possible to determine whether or not the drain water is filled in the drain pipe 76 with extremely high accuracy.

  The present invention is not limited to the above-described embodiments. Further, in this embodiment, in ST5 of FIG. 9, when the burner is not burned, the process is finished as it is, but not limited to this, part of the configuration described in the embodiment and other configurations not described above And may be combined.

It is a schematic system diagram which shows the main structures of the combustion apparatus which concerns on 1st Embodiment. It is the schematic which shows structures, such as a neutralizer of FIG. It is a schematic block diagram which shows the characteristic structure in the combustion apparatus of 1st Embodiment. It is a schematic flowchart which shows the main operation | movement etc. of the combustion apparatus of 1st Embodiment. 3 is a schematic timing chart showing an operation example of the first embodiment. It is a schematic timing chart which shows the other operation example of 1st Embodiment. It is a schematic system diagram which shows the main structures of the combustion apparatus concerning 2nd Embodiment. It is a schematic block diagram which shows the characteristic structure in the combustion apparatus concerning 2nd Embodiment. It is a schematic flowchart which shows the main operation | movement etc. of the combustion apparatus concerning 2nd Embodiment. It is the schematic which shows latent heat / sensible heat distribution map data. It is the schematic which shows the structure of the conventional neutralizer.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 40 ... Combustion apparatus, 41 ... Apparatus main body, 43 ... Combustion chamber, 44, 49 ... Piping, 45 ... Inlet pipe, 46 ... Bypass pipe, 47 ... Outlet pipe, 48 ... Hot water tap, 51 ... Gas pipe, 52 ... Gas proportional valve, 54 ... Primary heat exchanger, 56 ... Secondary heat exchanger, 57 ... Receptacle, 70 ... -Neutralizer, 75 ... exhaust passage, 76 ... drain piping, 80 ... water level sensor, 96 ... drain outlet, 97 ... neutralizer, 100 ... combustion integration timer, DESCRIPTION OF SYMBOLS 101 ... Combustion apparatus operation control part, 102 ... Combustion integration timer control part, 103 ... Water level sensor management part, 104 ... Integrated drain amount data management part, 105 ... Integrated drain amount data, 106 ... Burner combustion determination unit, 107 ... Integral drain amount calculation unit, 108 ... Increased drain amount Over data, 109 ... limit drain amount determination unit, 110 ... limit drain amount data

Claims (7)

When the latent heat is recovered by a latent heat recovery heat exchanger that is provided in a combustion apparatus including a piping system that supplies hot water heated by the combustion section and recovers the latent heat of exhaust gas generated by combustion of the combustion section A neutralizer for neutralizing the drain generated in
A neutralizer body configured to be able to place a neutralizer inside;
A drain receiving part for receiving drain;
An introduction part that guides the drain received by the drain receiving part to the neutralizer body,
It is determined whether or not the drain received in the drain receiving unit has the maximum capacity information that does not overflow from the drain receiving unit, and whether the drain received in the drain receiving unit exceeds the maximum capacity. A maximum capacity determination unit
The neutralizer body has a notifying unit for notifying the filling information which is information that the drain is filled in the neutralizer body,
The Max amount determination unit, configured to the notification unit on condition that they are informed of the charges information, amount of drainage that is received in the drain receiving part to determine whether exceeds the maximum storage amount And
The neutralizing device is configured to reset the accumulated amount information of the drain accumulated in the introduction unit when the full information is not output from the notification unit. The maximum accommodation amount information is introduction portion maximum accommodation amount information capable of accommodating the drain to the maximum in the introduction portion,
Cumulative accumulation amount information that is the accumulated amount of drain in the elapsed time based on at least the accumulated amount information per unit time in which drain is accumulated in the introduction unit, time information, and full information of the notification unit An accumulated amount calculation unit;
The neutralization apparatus according to claim 1, wherein the maximum accommodation amount determination unit makes a determination based on at least the introduction portion maximum accommodation amount information and the cumulative accumulation amount information.   The neutralization apparatus according to claim 2, wherein the accumulation amount calculation unit stops the calculation of the accumulated accumulation amount information when there is no output of combustion state information of the combustion unit. The maximum accommodation amount information is introduction portion maximum accommodation amount information capable of accommodating the drain to the maximum in the introduction portion,
At least, the drain is accumulated in the introduction part based on the output information indicating that the energy of the combustion part generated based on the temperature information and the flow rate information, which is the difference between the incoming water temperature information and the outgoing hot water temperature information, is converted into hot water. Increase accumulation information is generated,
At least a cumulative increase accumulation amount information calculation unit that calculates cumulative increase accumulation amount information that is a drain accumulation amount based on the increase accumulation amount information and the filling information of the notification unit,
The neutralization apparatus according to claim 1, wherein the maximum capacity determination unit makes a determination based on at least the introduction section maximum capacity information and the cumulative increase accumulation information. Latent heat output information generated based on latent heat distribution information which is information of the latent heat included in the output information,
The neutralization apparatus according to claim 4, wherein the increased accumulation amount information is generated based on at least the output information and the latent heat output information. A combustion section;
A piping system for supplying hot water heated by the combustion section;
A neutralizing device for neutralizing drain generated when the latent heat is recovered by a latent heat recovery heat exchanger that recovers the latent heat of exhaust gas generated along with combustion of the combustion section, ,
A neutralizer body configured to be able to place a neutralizer inside;
A drain receiving part for receiving drain;
An introduction part that guides the drain received by the drain receiving part to the neutralizer body,
It is determined whether or not the drain received in the drain receiving unit has the maximum capacity information that does not overflow from the drain receiving unit, and whether the drain received in the drain receiving unit exceeds the maximum capacity. A maximum capacity determination unit
The neutralizer body has a notifying unit for notifying the filling information which is information that the drain is filled in the neutralizer body,
The Max amount determination unit, configured to the notification unit on condition that they are informed of the charges information, amount of drainage that is received in the drain receiving part to determine whether exceeds the maximum storage amount And
A combustion apparatus, wherein when the full information is not output from the notification unit, the accumulated amount information of drain accumulated in the introduction unit is reset. When the latent heat is recovered by a latent heat recovery heat exchanger that is provided in a combustion apparatus including a piping system that supplies hot water heated by the combustion section and recovers the latent heat of exhaust gas generated by combustion of the combustion section A neutralizer control method for neutralizing drain generated in
The neutralizer is a neutralizer body configured to be able to arrange a neutralizer inside,
A drain receiving part for receiving drain;
An introduction part that guides the drain received by the drain receiving part to the neutralizer body,
The neutralizer body has a notifying unit for notifying the filling information which is information that the drain is filled in the neutralizer body,
The maximum capacity information that the drain received in the drain receiving part does not overflow from the drain receiving part,
The maximum capacity determination unit determines whether or not the drain amount received by the drain receiving unit exceeds the maximum capacity, on the condition that the notification unit reports the fullness information,
A control method for a neutralization apparatus, wherein when the full information is not output from the notification unit, the accumulated amount information of drain accumulated in the introduction unit is reset.

Images