JP2013071091A - Neutralization device and combustion apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a neutralization device which can prevent the clogging of a drain water passage hole without increasing the size of a container, and to provide a combustion apparatus.SOLUTION: The neutralization device 11 includes a storage unit 15 into which drain water is guided. The storage unit 15 has two or more compartments arranged in series toward the downstream side of the flow direction of the drain water, and upstream-side openings 30a and 30b which are formed between the compartments and through which the drain water flows. The upstream-side openings 30a and 30b are open horizontally in directions different from each other. As a result, the drain water flowing out of a drain introduction chamber 21 forms a water flow that spreads within a range of opening of the upstream-side openings 30a and 30b. In the drain introduction chamber 21, therefore, materials that can be accumulated actually accumulate in a spread form.

Description

  The present invention relates to a neutralizer for neutralizing drain generated when recovering latent heat of combustion gas. Moreover, it is related with the combustion apparatus provided with the neutralization apparatus.

  In recent years, in order to improve the heat exchange efficiency of heat generated when a burner is burned, a latent heat recovery type combustion apparatus that recovers even the latent heat of combustion gas has become widespread in the market. Since this latent heat recovery type combustion apparatus mainly recovers heat generated when water vapor in the combustion gas is liquefied, a heat exchanger (secondary heat exchanger) for recovering latent heat has a large amount of heat. Drain is generated. And it is known that this drain will show the acidity, the nitrogen oxide produced | generated at the time of combustion melt | dissolves.

  For this reason, this type of combustion apparatus has a drain discharge system that guides drain to the outside, and a neutralization device that neutralizes acidic drain is provided in the middle of the flow path. In other words, the acidic drain generated in the secondary heat exchanger is not discharged outside while maintaining its acidity, and is neutralized by the neutralizer and then discharged outside, which has a negative impact on the environment. There is no fear of effects.

  However, since the drain discharge system and the exhaust flow path of the combustion gas are in communication with each other, the combustion gas that should be discharged to the outside through the exhaust pipe of the combustion device is originally discharged to the outside through the drain discharge system. There was a concern of being discharged. In particular, in an indoor installation type combustion apparatus, when combustion gas is discharged from the drain discharge system, combustion gas is discharged indoors in the living space, so from the viewpoint of the safety of residents, Such a defect was one of the items to be avoided.

Therefore, as a countermeasure, the portion through which the combustion gas in the container of the neutralizer can pass is filled with drain to a predetermined water level and sealed, and the circulation of the combustion gas is forcibly blocked by the water sealing structure. Measures are generally adopted. For example, Patent Document 1 discloses the technique.
That is, the neutralization device of Patent Document 1 includes a first chamber, a second chamber filled with a neutralizing agent, and a third chamber in that order in the direction in which the drain flows. A water seal is formed between them.

JP 2009-150576 A

  However, in this type of neutralization apparatus, in addition to the residual residue after the neutralization reaction of the neutralizing agent, combustion residue (specifically “soot”) and garbage carried by the combustion gas accumulate in the container. In particular, the drain passage hole in the water-sealed portion has a problem of being easily clogged.

  More specifically, in the neutralization device of Patent Document 1, the first chamber and the second chamber communicate with each other through a slit (passage hole) provided along the bottom surface of the container. For this reason, when the residue of the neutralizing agent, soot, and dust accumulates over time on the bottom surface of the first chamber side, the opening area of the slit is reduced by the amount of deposit, and the slit is finally closed. I had to. Then, due to this clogging, there is a possibility that the inside of the container overflows with the introduced drain and activates the control for stopping the combustion.

  In view of this, it is considered that the position of the drain passage hole at the location where the water seal is formed is changed to a height that takes into account the height of the accumulated deposit in advance as the container configuration of the neutralizer. That is, it is considered that the position of the drain passage hole is changed to a high position that does not affect the deposits.

  However, in view of the recent market trend of reducing the size and weight of the combustion apparatus, it is difficult to adopt a configuration in which the height of the passage hole is excessively increased. In other words, if the drain passage hole at the location where the water seal is formed is changed to a high position, in order to obtain the same water sealing effect as before the change, the increase in the height of the passage hole and the position of the water level also increase. As a result, an increase in the size of the neutralizing device and the combustion device is inevitable.

  Therefore, as another measure, the partition wall separating adjacent rooms is provided with a plurality of through holes through which drain opens in the same direction, and the deposit is dispersed and deposited in a wide range, thereby preventing the influence of clogging by the deposit. The reduced configuration is taken into account. If this measure is used, the position of the passage hole in the height direction is not changed, so that the neutralization device and the combustion device are not increased in size. However, in the case of this measure, since the direction in which the drain flows is only one direction, as a result, as shown in FIG. 24, most of the deposits are concentrated near the passage hole 103 and clogging by the deposits occurs. There was a concern to make.

  Therefore, in view of the problems of the prior art, it is an object of the present invention to provide a neutralization device and a combustion device that can prevent clogging in the drain passage hole without increasing the size of the container. .

  In order to solve the above-mentioned problem, the invention described in claim 1 is provided in a combustion apparatus that heats hot water or a heat medium, and mainly neutralizes the drain generated when recovering the latent heat of the combustion gas to the outside. A neutralization device that forms a part of a drain discharge system that discharges, and has a storage part that stores drain, and the storage part is arranged in two or more in series toward the downstream side in the drain flow direction The room has a passage hole through which the drain provided between the rooms circulates, and the drain introduced into the storage part sequentially flows into the downstream room through the passage hole. The neutralization device is characterized in that the passage holes between the two chambers are formed in two or more directions different in the horizontal direction.

In the neutralization device of the present invention, the storage section is divided into two or more rooms, and the passage holes between any of the rooms are formed in two or more directions different in the horizontal direction. . That is, in the present invention, in at least one room, the drain flows in two or more different directions in the horizontal direction with respect to the room adjacent to the downstream side. As a result, in the upstream chamber of the through holes formed in two or more different directions, the flow of drain is formed in the number of the different directions. Therefore, in the room, within the range where the through holes are separated from each other. A material that can be deposited (hereinafter referred to as a deposited material) can be deposited by being dispersed in a wide range. In other words, the present invention can prevent the deposition material from being concentrated in the vicinity of one passage hole. If such a passage hole is provided, for example, between the most upstream room of the storage section and another room adjacent to the room, it is carried along with the inflow of combustion gas as described above. It is possible to effectively prevent clogging caused by accumulated substances such as “soot” and “garbage”.
As described above, according to the present invention, even if the amount of the deposited material is the amount that has blocked the drain passage hole in the case of the conventional technique, it is formed in two or more different directions in the horizontal direction. In addition, since the deposited material can be dispersed in a wide range within the range where the through holes are separated from each other in the horizontal direction, the through holes are blocked without changing the height of the drain through holes. Can be prevented. That is, this invention can ensure the smooth distribution | circulation of the drain in a storage part, without causing the enlargement of a neutralization apparatus.
Even if one of the through holes formed in two or more different directions becomes blocked due to the deposit material, the drain is downstream from the other through holes. Therefore, the problem that the drain is not completely discharged to the outside hardly occurs.

Here, conventionally, there has been known a technique for forming a water seal for preventing the flow of combustion gas between an introduction chamber into which drain is first introduced and another chamber adjacent to the downstream side thereof. According to this, the combustion gas does not flow out downstream of the introduction chamber in the drain flow direction. On the other hand, when this configuration is adopted, “soot” and “trash” carried by the combustion gas accumulate in the introduction chamber in a concentrated manner, so that there is a gap between the introduction chamber and a room adjacent to the downstream side. The passage hole is likely to be in a closed state, and the flow of drain may be blocked.
Therefore, in the neutralization apparatus of the present invention, the storage unit has an introduction chamber into which drain is first introduced, and the through holes formed in the two or more different directions are the introduction chamber and the drain of the introduction chamber. It is desirable to be provided between another room adjacent on the downstream side in the flow direction. (Claim 2)

  In the neutralization apparatus of the present invention, the introduction chamber is partitioned by another partition adjacent to the downstream side of the drain flow direction with two partition walls that intersect each other, and each of the two partition walls It is desirable that the passage hole is provided. (Claim 3)

  The invention according to claim 4 is characterized in that at least one of the through holes formed in two or more different directions is formed of a plurality of holes arranged in a horizontal direction. It is a neutralization apparatus in any one of Claims 1-3.

  According to such a configuration, the passage holes are formed in two or more different directions in the horizontal direction, and at least one of the passage holes is formed of a plurality of holes arranged in the horizontal direction. Efficiency can be further improved. That is, according to the present invention, the deposition material spreads over a wider range, so that the deposition rate per unit area of the region where the deposition material exists is reduced. As a result, since the passage hole can be changed to a lower position than before, the neutralization device can be further downsized (particularly in the height direction).

  The invention according to claim 5 is a combustion section that burns fuel, a primary heat exchanger that mainly recovers sensible heat of the combustion gas generated in the combustion section, and two that recovers mainly latent heat of the combustion gas. The neutralization apparatus in any one of Claims 1-4 which forms a part of the drain heat system which drains the secondary heat exchanger, the drain which generate | occur | produced with the said secondary heat exchanger outside, and the said drain discharge system It is a combustion apparatus characterized by providing.

  In the combustion apparatus of the present invention, even if the amount of the deposited substance is an amount that can block the passage hole if it is a conventional technique, the drain passage hole is in two or more directions different in the horizontal direction in the neutralization device. Since the deposited material can be dispersed over a wide range, the possibility of the passage hole being blocked can be reduced without changing the height position of the drain passage hole. That is, the present invention can ensure smooth circulation of the drain in the storage part without increasing the size of the combustion apparatus itself.

  In the neutralization device and the combustion device of the present invention, the drain passage holes are formed in two or more directions different from each other in the horizontal direction, so that the drain passage holes are not clogged without increasing the size of the container. Can be prevented.

It is a block diagram which shows the inside of the housing of the combustion apparatus which concerns on embodiment of this invention. It is a perspective view which shows the neutralization apparatus which concerns on embodiment of this invention. It is a disassembled perspective view which shows the neutralization apparatus of FIG. It is a perspective view which shows the cover part of FIG. 3 from another angle. It is a perspective view which shows the main-body part of FIG. 3 from another angle. It is explanatory drawing which shows notionally the positional relationship of the bottom wall of each room in a main-body part. It is a top view which shows a main-body part. (Solid arrows: drain flow direction, dashed arrows: clean water flow direction) It is the conceptual diagram which paid its attention to the side wall of a storage part. It is the conceptual diagram which paid its attention to the side wall of bottomed space. It is a cross-sectional perspective view which shows the storage part of FIG. It is explanatory drawing which shows notionally each positional relationship of the opening in a main-body part, a notch part, a slit, and a hole, and the relationship between a main-body part and a cover part. It is AA sectional drawing which shows the main-body part of FIG. It is a front view which shows a partition. It is BB sectional drawing which shows the slope part of the bottomed space of FIG. It is a figure which shows notionally the state which filled the main body part with the neutralizing agent, (a) is a top view, (b) is sectional drawing. (A), (b), (c) is explanatory drawing which shows the flow of the clean water until a drain introduction chamber and a 1st neutralization chamber are satisfy | filled with clean water. It is explanatory drawing which shows notionally the water flow in a drain introduction chamber, and the deposition area | region of a deposited substance. (Arrow: water flow, dot area: deposited material) (A), (b), (c) is explanatory drawing which shows the flow of the liquid until the 2nd neutralization chamber is satisfy | filled with the liquid (only drain or the mixed water of drain and clean water). It is explanatory drawing which shows notionally the relationship between bottomed space and the water level of drain when drain is normally discharged | emitted outside. It is a conceptual diagram which shows the neutralization apparatus provided with the three main partition walls. (Arrow: water flow, dot area: deposited material) It is a conceptual diagram which shows the neutralization apparatus provided with the arc-shaped main partition wall. (Arrow: water flow, dot area: deposited material) It is a conceptual diagram which shows the neutralization apparatus provided with the square-shaped main partition wall. (Arrow: water flow, dot area: deposited material) It is a conceptual diagram which shows the neutralization apparatus provided with the circular shaped main partition wall. (Arrow: water flow, dot area: deposited material) It is explanatory drawing which shows notionally the deposition area | region of the water flow and deposition material at the time of providing the two through-holes opened in the same direction. (Arrow: water flow, dot area: deposited material)

Below, the combustion apparatus 1 which concerns on embodiment of this invention, and the neutralization apparatus 11 are demonstrated.
The neutralization device 11 of the present embodiment includes a so-called reverse combustion type combustion unit 2 that sprays or vaporizes liquid fuel such as kerosene and burns it downward, and the latent heat of combustion gas generated in the combustion unit 2 It is suitable for the latent heat recovery type combustion apparatus 1 that can recover even up to.

First, the combustion apparatus 1 will be described.
As shown in FIG. 1, the combustion case 1 includes a combustion case 5 disposed substantially at the center of the housing 3, and the combustion case 2 includes a combustion unit 2, a primary heat exchanger 20, and a secondary heat exchanger 25. Built in. Specifically, in the combustion case 5, a burner side case 5a, a vertically long case 5b having a substantially rectangular parallelepiped shape that is long in the height direction (vertical direction), and a horizontally long case 5c that is long in the width direction (left and right direction) communicate with each other. The combustion section 2 is arranged in the burner side case 5a, the primary heat exchanger 20 is arranged in the vertically long case 5b, and the secondary heat exchanger 25 is arranged in the horizontally long case 5c. ing.
Further, an exhaust cylinder 10 for exhausting combustion gas to the outside is disposed on the left side of the housing 3 of the combustion apparatus 1. Specifically, the exhaust tube 10 is disposed so as to extend inside and outside the housing 3 of the combustion device 1 and is connected to the upper left side of the horizontally long case 5c.

That is, when combustion gas is generated in the combustion unit 2, the combustion gas first proceeds downward, passes through the primary heat exchanger 20, and flows into the secondary heat exchanger 25. The combustion gas flowing into the secondary heat exchanger 25 changes the flow direction of the combustion gas from the lower direction to the upper direction, passes through the exhaust pipe 10 and is exhausted to the outside.
In addition, the combustion apparatus 1 of this embodiment has an air blower which is not shown in figure, the air required for combustion is supplied with the air blower, and also the combustion gas produced | generated by the combustion part 2 is flowed downward.

  Moreover, the primary heat exchanger 20 and the secondary heat exchanger 25 each have a heat receiving pipe (not shown) through which clean water that exchanges heat with the combustion gas flows, and these heat receiving pipes, a water inlet side pipe and a hot water outlet side pipe (not shown). Forms a series of flow paths in the housing 3 of the combustion apparatus. Specifically, the inlet side piping, the secondary heat exchanger 25, the primary heat exchanger 20, and the hot water side piping are connected in series in this order from the upstream side in the flowing water direction. That is, in the combustion apparatus 1, the clean water that has passed through the water inlet side pipe flows through the secondary heat exchanger 25 and then flows through the primary heat exchanger 20, so that heat is sequentially exchanged. It is supplied toward the hot water supply destination.

Further, in the combustion case 5, a recovery unit (not shown) that recovers drain generated when the latent heat of the secondary heat exchanger 25 is recovered is provided inside the horizontally long case 5 c, and the combustion device 1 is provided from the recovery unit. A drain discharge system 7 is connected to flow drain toward the lower side. That is, this drain discharge system 7 is located on the lower side of the housing 3 from the horizontally long case 5c, and a neutralization device 11, a drain introduction side pipe 37 that connects a recovery unit (not shown) and the neutralization device 11, A drain external discharge pipe 38 that guides the drain neutralized by the neutralizing device 11 to the outside.
Moreover, the neutralizer 11 of this embodiment is connected to the neutralizer water supply pipe 9 through which the clean water supplied from the water supply source passes in order to ensure the water seal structure in the neutralizer 11. Yes.

Next, the neutralizing device 11 having a characteristic configuration will be described in detail.
In the following description, the vertical and horizontal positional relationships will be described based on the normal installation state shown in FIG. 1 unless otherwise specified.
As described above, the neutralization device 11 of the present embodiment is connected to the neutralizer water supply pipe 9 in order to ensure the water sealing structure in the device, and when a predetermined condition is satisfied, the water supply source It is set as the structure by which the clean water supplied from is introduced through the neutralizer water supply pipe 9.
Specifically, as shown in FIG. 2, the neutralization device 11 is a container having an almost “L” -shaped appearance, and the storage unit 15 in which the drain that has passed through the drain introduction side pipe 37 is temporarily stored. A main body portion 12 having a bottomed space 16 through which clean water flowing through the neutralizer water supply pipe 9 passes, and a lid portion 13 detachably provided on the upper portion of the main body portion 12; Has been.

  As shown in FIG. 3, the lid 13 has a top wall 40 having a substantially “L” shape in plan view, and a direction substantially orthogonal to surround an edge of the top wall 40, specifically, It is the structure which has the side wall 41 erected vertically downward with respect to the top surface wall 40, and the fitting groove 49 (FIG. 4) in which the upper part of the main-body part 12 fits.

The top wall 40 is provided with a water supply portion 33, a drain introduction side connection portion 35, and four electrode insertion holes 45 to 48.
The water supply part 33 is a pipe joint part that penetrates in the thickness direction of the top wall 40 so as to introduce the clean water that has passed through the neutralizer water supply pipe 9 into the bottomed space 16 of the main body part 12. Specifically, as shown in FIG. 3, the water supply unit 33 is a region 42 (hereinafter referred to as a short region) 42 on the side where the “L” overhang length of the top wall 40 is short, and as shown in FIG. 4. In addition, on the standing side of the side wall 41, the water supply port 29 is arranged so as to be positioned substantially at the center of the short region 42. In the present embodiment, an auxiliary joint 43 extending in a substantially horizontal direction (a direction along the top wall 40) is attached to the water supply portion 33. And the inner diameter of the auxiliary joint 43 is set to be substantially the same as the outer diameter of the neutralizer water supply pipe 9 (FIG. 1). That is, the neutralizer water supply pipe 9 is inserted and connected along the inner diameter side of the auxiliary joint 43.

  As shown in FIG. 3, the drain introduction side connecting portion 35 is provided on the proximal end side of both the short region 42 and the region 44 (hereinafter referred to as the long region) on the side where the “L” overhang length of the top surface wall 40 is long. In the thickness direction of the top wall 40, the drain located in the located region (hereinafter referred to as the proximal region) 50 and having passed through the drain introduction side pipe 37 (FIG. 1) is introduced into the storage portion 15 of the main body portion 12. It is a pipe joint that penetrates. The drain introduction side connecting portion 35 has an outer diameter that is substantially the same as or slightly larger than the inner diameter of the drain introduction side pipe 37. That is, the drain introduction side pipe 37 is connected so as to be fitted along the outer diameter side of the drain introduction side connection portion 35.

  As shown in FIG. 3, the four electrode insertion holes 45 to 48 are holes that are located on the long region 44 side and in the vicinity of the boundary between the long region 44 and the proximal end region 50 and penetrate in the thickness direction of the top wall 40. The size is set such that electrodes 55 to 58 described later can be inserted.

Here, the four electrodes 55 to 58 inserted through the electrode insertion holes 45 to 48 will be described.
The electrodes 55 to 58 of the present embodiment are known water level detection means for detecting the water level in the storage unit 15. Specifically, the electrode 55 is a ground electrode, and the other electrodes 56 to 58 are an overflow electrode, a water supply control electrode, and an abnormal combustion detection electrode, respectively. In other words, this water level detection means can be used between the ground electrode 55 and the other electrodes if the ground electrode 55 and any of the other electrodes 56 to 58 are immersed in the drain. It becomes an energized state and it can be judged what the water level in the storage part 15 is.
The overflow electrode 56 detects an abnormal rise in the water level of the drain in the reservoir 15, and the water supply control electrode 57 can maintain a water level that can prevent the flow of combustion gas in the drain discharge system 7. The abnormal combustion detection electrode 58 detects that the water level in the reservoir 15 is abnormally large and the water level cannot prevent the flow of the combustion gas in the drain discharge system 7. It is.
The above is the description of the electrodes 55 to 58 employed in the present embodiment.

The fitting groove 49 is provided on the lower surface side of the top wall 40, that is, the side on which the side wall 41 is erected, and is constituted by an outer fitting groove 49 a and an inner fitting groove 49 b as shown in FIG. 4. Has been. The outer fitting groove 49 a is a groove formed by the side wall 41 and the outer groove forming wall 61 arranged along the side wall 41, and the inner fitting groove 49 b is a position separated from the side wall 41. The groove is formed by a pair of inner groove forming walls 62 arranged along a part of the drain introduction chamber 21 of the storage unit 15 described later.
In the present embodiment, the lid portion 13 is configured to fit a packing (not shown) in the fitting groove 49 and attach it to the main body portion 12 in this state.

On the other hand, as shown in FIGS. 3 and 5, the main body 12 is an approximately “L” -shaped container whose upper side is open, and is erected so as to surround the bottom wall 51 and the bottom wall 51. The outer wall of the container is formed by the side wall 52. And the storage part 15 and the bottomed space 16 are provided in the inside of the container of the main-body part 12 (FIG. 7).
In the following description, the short region 42, the long region 44, and the proximal region 50 will be described as the same positions as described above (FIG. 7).

First, the bottom wall 51 of the main body 12 will be described.
As shown in FIGS. 2 and 5, the bottom wall 51 is composed of three bottom walls 51 a, 51 b, and 51 c having different positions in the height direction. That is, as shown in FIG. 6, the bottom wall 51 forms a storage portion bottom wall 51 a that forms most of the bottom surface of the storage portion 15 and a remaining portion of the bottom portion of the storage portion 15 from those having a low height direction position. The bottom wall 51c of the bottom space 51b and the bottom wall 51b of the bottom space that forms the bottom surface of the bottomed space 16. In other words, as shown in FIG. 7, the bottom surfaces of the long region 44 and the base region 50 are formed by the storage portion bottom wall 51a and the discharge bottom wall 51c, and the bottom surface of the short region 42 is positioned at the highest position in the height direction. The bottomed space bottom wall 51b having a high height is formed.

Next, the side wall 52 of the main body 12 will be described.
For the sake of convenience, the side wall 52 will be roughly described on the storage unit 15 side (long region 44 and proximal end region 50) and the bottomed space 16 side (short region 42).
As shown in FIG. 8, the side wall 52 on the storage unit 15 side is a portion arranged so as to surround the storage unit bottom wall 51 a and the discharge bottom wall 51 c in a substantially rectangular shape. The outer base side wall 52a and the outer long base side wall 52b positioned outside, the inner long side wall 52d positioned inside "L", the outer base side wall 52a and the inner long side wall 52d are connected and a bottomed space is provided. 16, a bottomed lower side wall 52e positioned below 16 and a long end side wall 52f connecting the outer long base side wall 52b and the inner long side wall 52d. That is, the side wall 52 on the storage unit 15 side has a relationship in which the outer base side wall 52a faces the long end side wall 52f, and the outer long base side wall 52b faces the inner long side wall 52d and the bottomed lower side wall 52e. It is related.

  As shown in FIG. 9, the side wall 52 on the bottomed space 16 side is a portion disposed so as to surround the bottomed space bottom wall 51 b in a substantially “U” shape. The outer short side wall 52c located outside the character, the inner short side wall 52g located inside the “L” shape of the main body 12, and the short end side surface connecting the outer short side wall 52c and the inner short side wall 52g It is comprised with the wall 52h. That is, the side wall 52 on the bottomed space 16 side is located above the bottomed lower side wall 52e, and the outer short side wall 52c and the inner short side wall 52g are in a facing relationship, and further between them. The short end side wall 52h is arranged. Therefore, the bottomed space 16 has a configuration in which a side wall facing the short-end side wall 52h is missing, and has a relationship of communicating with the storage unit 15 through the missing part side.

Next, the storage part 15 of the main body part 12 will be described.
As shown in FIGS. 3, 7, and 10, the storage unit 15 is a storage space having a labyrinth structure that temporarily stores and neutralizes the drain, and is substantially perpendicular to the bottom wall 51. The storage unit 15 is divided into a plurality of rooms by a main partition wall 17 and an auxiliary partition wall 18 erected vertically upward with respect to the storage unit bottom wall 51a. That is, the storage unit 15 is divided into a drain introduction chamber 21, a first neutralization chamber 22, and a second neutralization chamber 23 by the main partition wall 17 and the auxiliary partition wall 18.
In the present embodiment, the main partition wall 17 and the auxiliary partition wall 18 are configured to have relatively different heights, and the top of the main partition wall 17 is set higher than the auxiliary partition wall 18. ing. Specifically, as shown in FIGS. 3 and 11, the main partition wall 17 has substantially the same height as the side wall 52 of the main body 12, and the auxiliary partition wall 18 has a height of the main partition wall 17. It is set slightly lower than this.

  The drain introduction chamber 21 is a room located immediately below the drain introduction side connection portion 35 and the electrode insertion holes 45 to 48 in a state where the lid portion 13 is attached to the main body portion 12, and the drain introduced into the storage portion 15 is stored in the drain introduction chamber 21. The first space to enter. Specifically, as shown in FIGS. 7 and 8, the drain introduction chamber 21 has a first main partition wall 17a extending in a direction orthogonal to the outer base side wall 52a and a direction orthogonal to the outer long base side wall 52b. This is a room having a substantially rectangular shape in plan view surrounded by the extended second main partition wall 17b, the outer base side wall 52a, and the outer long base side wall 52b. In other words, the drain introduction chamber 21 includes a first main partition wall 17a extending along the outer long base side wall 52b, and a second main partition wall 17b extending along the outer base side wall 52a on the long region 44 side. A space located at a corner of the main body 12 surrounded by a part of the side wall 52 of the main body 12.

The first neutralization chamber 22 is a chamber in which the drain that has passed through the drain introduction chamber 21 is neutralized first, and is adjacent to the drain introduction chamber 21 with the first main partition wall 17a and the second main partition wall 17b interposed therebetween. Space. Specifically, as shown in FIG. 7, the first main partition wall 17 a and the second main partition wall 17 b are formed so as to cross each other (substantially orthogonal in the present embodiment). Is adjacent to the drain introduction chamber 21 with the first main partition wall 17a and the second main partition wall 17b in an intersecting relationship therebetween. More specifically, the first neutralization chamber 22 is adjacent to the drain introduction chamber 21 on the upstream side in the drain flow direction, and includes the first main partition wall 17a and the second main partition wall 17b, and the outer base side wall 52a. A room surrounded by the bottomed lower side wall 52e and the first auxiliary partition wall 18a. In other words, the first neutralization chamber 22 is a space located between the drain introduction chamber 21 and a bottomed space 16 described later. Further, the shape of the first neutralization chamber 22 in plan view is a distorted bowl shape in which two substantially rectangular chambers having different sizes are connected by a flow path sandwiched between them.
The first neutralization chamber 22 is filled with a predetermined amount of neutralizing agent, and in this embodiment, calcium carbonate having a minimum particle size of 6 mm is employed as the neutralizing agent.

And the 1st neutralization chamber 22 and the drain introduction chamber 21 are the drains provided in the height direction lower part side of the 1st main partition wall 17a and the 2nd main partition wall 17b, as shown in FIG. It communicates with a passage hole (hereinafter referred to as upstream opening) 30 for flowing downstream. The upstream opening 30 includes two first upstream openings 30a provided on the lower side of the first main partition wall 17a and one drain upstream side opening 30b provided on the lower side of the second main partition wall 17b. It is. Specifically, the first upstream side opening 30a and the second upstream side opening 30b have the same position in the height direction and are opened in different directions in the horizontal direction (in the orthogonal direction in the present embodiment). That is, the first upstream opening 30a and the second upstream opening 30b have a positional relationship in which the other opening is rotated approximately 90 degrees in the horizontal direction with respect to one opening. In other words, the first upstream side opening 30a and the second upstream side opening 30b form a water flow that expands approximately 90 degrees toward the different openings 30a, 30b in the horizontal direction in the drain introduction chamber 21, In the Japanese-style room 22, the water flow which spreads to about 90 degree | times is formed from the opening 30a, 30b which differs in a horizontal direction. Further, the two first upstream openings 30a are holes that are arranged adjacent to each other in the horizontal direction and open in the same direction.
As shown in FIGS. 10 and 11, the first upstream opening 30a is a long hole extending in the opening width direction, with the opening lower edge being linear and the opening upper edge being wave-shaped opening. The second upstream opening 30b is a substantially rectangular long hole.

Further, in the present embodiment, a vertically long slit 59 communicating with the upstream opening 30 is provided. The vertically long slit 59 is an opening that is located substantially at the center of each of the upstream openings 30 a and 30 b and extends vertically downward from the lower edge of the opening toward the bottom wall 51. And, the longitudinal slit 59 has an extremely narrow slit width compared to a grain-shaped neutralizing agent so that only the liquid (mainly drain) present on the bottom wall 51 side than the upstream openings 30a and 30b flows to the downstream side. It is set to a small size. In other words, the vertically long slit 59 is an opening having such a size that “soot after neutralization of the neutralizing agent”, “soot” carried by the combustion gas, dust or the like cannot pass through. Instead of the longitudinal slit 59, an opening larger than the longitudinal slit 59 may be provided, and filter paper-like impurity passage blocking means may be provided.
Further, the bottom wall 51 of the first neutralization chamber 22 is provided with a drain plug 63 for artificially extracting the drain during maintenance or the like. The drain plug 63 is a hole penetrating in the member thickness direction of the bottom wall 51 in the first neutralization chamber 22 and is normally closed by a closing plug.

  The second neutralization chamber 23 is a chamber for further neutralizing the drain neutralized in the first neutralization chamber 22 and discharging it to the drain external discharge pipe 38 on the downstream side. A predetermined amount of agent is filled. The second neutralization chamber 23 is a space adjacent to the first neutralization chamber 22 and the first auxiliary partition wall 18a. Specifically, as shown in FIG. 7, the second neutralization chamber 23 is adjacent to the first neutralization chamber 22 on the upstream side in the drain flow direction, and includes the first auxiliary partition wall 18a and the outer long base side wall 52b. And a room in which two substantially rectangular spaces with different sizes in plan view are surrounded by the long end side wall 52f and the inner long side wall 52d. In other words, the second neutralization chamber 23 is a space that occupies most of the long region 44 of the main body 12.

  The second neutralization chamber 23 and the first neutralization chamber 22 communicate with each other on the upper side in the height direction of the first auxiliary partition wall 18a. That is, as described above, the first auxiliary partition wall 18a is set at a position lower than the side wall 52 and the main partition wall 17 as described above. A gap is formed between the top of one auxiliary partition wall 18 a and the lid 13. Furthermore, in this embodiment, as shown in FIGS. 10 and 11, the notch 31 is formed by notching the top of the first auxiliary partition wall 18 a in a rectangular shape downward. The portion 31 and the gap above the top communicate with each other. Therefore, the drain introduced into the first neutralization chamber 22 flows into the second neutralization chamber 23 mainly from the cutout portion 31 provided on the upper side of the first auxiliary partition wall 18a. The notch 31 is formed slightly closer to the second upstream opening 30b provided in the second main partition wall 17b.

  In the present embodiment, the mesh member 70 is attached to the notch 31. This mesh member 70 is a neutralizer intrusion prevention means for preventing the neutralizer from flowing from the first neutralization chamber 22 to the second neutralization chamber 23 or from the second neutralization chamber 23 to the first neutralization chamber 22. A mesh having a particle size smaller than that of the neutralizing agent is employed. That is, the maximum opening width of one mesh of the mesh member 70 is less than 6 mm, preferably less than 5 to 4 mm.

  The inside of the second neutralization chamber 23 is divided into two spaces by one auxiliary partition wall 18b. Specifically, the second auxiliary partition wall 18b is arranged in a direction connecting the outer long base side wall 52b and the inner long side wall 52d (hereinafter referred to as a space dividing direction), and the inside of the second neutralization chamber 23 is shown in FIG. 11, the space is divided into a primary space 65 and a secondary space 66, and an opening is provided at the boundary between the spaces 65 and 66 to ensure the flow of water.

  More specifically, the primary space 65 is a space located in the uppermost stream in the second neutralization chamber 23. That is, the primary space 65 is formed of two spaces formed by arranging the second auxiliary partition wall 18b so that the wall surfaces face each other at a position separated from the long-end side wall 52f by a substantially constant distance. This is the space upstream of the drain flow direction. The primary space 65 is provided on the lower side of the second auxiliary partition wall 18b with a drain downstream side opening 34 having a substantially square shape in front view at a position in the middle of the space division direction. The drainage flows out to the adjacent secondary space 66.

  Further, in the present embodiment, the second auxiliary partition wall 18b has a temporary cutout portion 68 with the top cut out in a substantially rectangular shape at a position in the middle of the space division direction, and the drain downstream side opening 34 is clogged or the like. When it occurs, the drain is temporarily passed through the temporary notch 68 to the downstream side.

  The secondary space 66 is the most downstream space in the second neutralization chamber 23. That is, as shown in FIG. 7, the secondary space 66 is a space on the downstream side in the drain flow direction of the two spaces formed by the second auxiliary partition wall 18b. The secondary space 66 is provided with a drain discharge portion 36 penetrating in the thickness direction on the discharge bottom wall 51c disposed at a position higher than the storage portion bottom wall 51a, and the drain outside through the drain discharge portion 36. Drain is discharged to the discharge pipe 38 side.

  In the present embodiment, a hole surrounding wall 53 surrounding the drain discharge portion 36 is provided so that the neutralizing agent does not enter the drain discharge portion 36. The hole surrounding wall 53 is a wall erected vertically upward from the discharge bottom wall 51c. The hole surrounding wall 53 forms a gap between the side in the surrounding direction of the drain discharge portion 36 and the long end side wall 52f, and guides the drain to the drain discharge portion 36 from the gap. That is, the hole surrounding wall 53 is a foreign matter intrusion prevention means for preventing the intrusion of the neutralizing agent into the drain discharge portion 36 while ensuring a drain flow path.

  Further, a drain plug 63 similar to that provided in the first neutralization chamber 22 is provided at a position on the bottom wall 51 of the second neutralization chamber 23 and straddling the second auxiliary partition wall 18b. In other words, the drain plug 63 provided in the second neutralization chamber 23 is arranged so as to straddle the primary space 65 and the secondary space 66.

  Further, the second neutralization chamber 23 is configured such that the opening area gradually decreases from the intermediate position in the height direction toward the bottom wall 51 from the primary space 65 to the secondary space 66. Specifically, as shown in FIGS. 5, 10, and 12, in the second neutralization chamber 23, one of the side walls 52 constituting the second neutralization chamber 23 is located at the position of the upper edge of the drain downstream side opening 34. From the position s between the discharge bottom wall 51c and the position of the discharge bottom wall 51c, the shape is inclined toward the inner side of the main body 12 downward. More specifically, the inner long side wall 52d is inclined downward from a position slightly above the upper edge of the drain downstream opening 34, and the long end side wall 52f is substantially the same as the discharge bottom wall 51c. The shape is inclined downward from the position.

Next, the bottomed space 16 of the main body 12 will be described.
The bottomed space 16 is a room through which clean water supplied from a water supply source passes, and as shown in FIGS. 3, 5, and 7, storage is performed at a position where the outer base side wall 52 a and the inner long side wall 52 d intersect. It is a space arranged so as to protrude from the portion 15. Specifically, the bottomed space 16 is located at a position adjacent to the first neutralization chamber 22 of the storage unit 15 and at a position facing the drain introduction chamber 21 across the first neutralization chamber 22. Yes. The bottomed space 16 is provided with a partition wall 19 that is erected vertically upward with respect to the bottom wall 51b of the bottomed space in the vicinity of the boundary with the storage unit 15, and has a circular shape in plan view. The boundary between the bottom space 16 and the storage unit 15 is determined. That is, the bottomed space 16 is a substantially circular space surrounded by the outer short side wall 52c, the inner short side wall 52g, the short end side wall 52h, and the partition wall 19.

  In addition, the partition wall 19 is provided with a hot water discharge slit portion (hereinafter referred to as a hot water slit) 27 cut out downward from the top portion, and water is stored through the hot water slit portion 27. It is the structure discharged to the part 15 side. As shown in FIG. 13, the hot water slit portion 27 has a plurality of (five in the present embodiment) slits 39, and each slit 39 forms a central slit group 27 a that forms a group on the central side of the partition wall 19. And an outer slit 27b at a position separated from the center slit group 27a on the outer side (the end in the arc direction of the partition wall 19). Specifically, in this embodiment, the central slit group 27a is formed by three slits 39, and the interval o between the slits 39 is made dense (about the opening width of the slits 39). The outer slit 27b is formed by a single slit 39, and is separated from the central slit group 27a by an arc direction that is wider than the interval o between the slits 39 of the central slit group 27a. It has been arranged.

  Further, as shown in FIG. 14, the bottomed space bottom wall 51b of the bottomed space 16 is provided with a slope portion (inclined portion) 54 having a downward slope toward the downstream side in the flowing direction of the clean water. As shown in FIG. 7, the slope portion 54 is set to a size that fits almost entirely inside the partition wall 19. Further, the slope portion 54 is configured such that the downstream end portion in the clean water flow direction is located slightly below the lower end edge of the opening of the slit portion 27 of the partition wall 19. That is, in the bottomed space 16, a part of the lower side of the partition wall 19 forms a step with the slope portion 54, and functions as a dam of clean water. Therefore, the clean water passing through the bottomed space 16 flows into the slope portion 54 located downstream, and reaches the downstream end portion of the slope portion 54 so as to get over the lower end portion of the slit portion 27 of the partition wall 19. It is discharged to the part 15 side.

Next, the positional relationship in each part in the neutralizer 11 and the state of the neutralizer will be described.
The neutralizing device 11 is provided with a lid portion 13 on the upper open end side of the main body portion 12. That is, the open end of the main body 12 is fitted into the fitting groove 49 of the lid 13, and the open side surface of the main body 12 is closed by the lid 13. More specifically, the side wall 52 of the main body portion 12 is fitted into the outer fitting groove 49 a of the lid portion 13, and the first main partition wall 17 a and the second main partition wall 17 b of the main body portion 12 are of the lid portion 13. It fits into the inner fitting groove 49b. As a result, as shown in FIG. 11, the neutralization device 11 is in a state where the side wall 52 and the drain introduction chamber 21 are sealed.

Further, in this state, the drain introduction side connection portion 35 and the electrode insertion holes 45 to 48 provided in the lid portion 13 are located immediately above the drain introduction chamber 21, and the water supply portion 33 in the lid portion 13 is a bottomed space. Located directly above 16. In particular, the water supply portion 33 is located in the middle of the bottomed space bottom wall 51 b on the inner side of the bottomed space 16, and with respect to the side wall 52, the bottom wall 51, and the partition wall 19 that form the bottomed space 16, They are arranged at a predetermined distance (25 mm in this embodiment) or more.
And each electrode 55-58 is inserted in the electrode insertion holes 45-48.

  Inside the reservoir 15, a predetermined amount of neutralizing agent is filled in a part of the region. Specifically, the neutralizing agent is filled in the first neutralizing chamber 22 and the second neutralizing chamber 23 of the storage unit 15, and the volume of the neutralizing agent in the first neutralizing chamber 22 is increased as shown in FIG. 15. The second neutralizing chamber 23 is distributed so as to be higher than the volume of the neutralizing agent. At this time, the upper side of the neutralizing agent filled in the first neutralization chamber 22 and the second neutralization chamber 23 reaches the notch 31 of the first auxiliary partition wall 18a. Movement of the sump to the other room is blocked. In the first neutralization chamber 22, the upper side of the filled neutralizing agent reaches the bottomed space 16, but the partition wall 19 prevents entry into the bottomed space 16.

Next, operation | movement of the combustion apparatus 1 of this embodiment is demonstrated.
The combustion apparatus 1 of the present embodiment is provided with a neutralizer water supply function for supplying water to the neutralizer 11 in order to maintain the water seal structure formed in the neutralizer 11. That is, the water level of the reservoir 15 is monitored by the arranged electrodes 55 to 58. And if it is not confirmed by those electrodes 55-58 (especially water supply control electrode 57) that the water level in the storage part 15 is more than a predetermined value, a neutralizer water supply function will work and it will be forced to the storage part 15 Water is supplied to That is, immediately after installation of the combustion apparatus 1, since there is no drain in the reservoir 15, the neutralizer water supply function works and water is supplied until the water level in the reservoir 15 reaches a predetermined value.

  The water supply to the storage part 15 by the neutralizer water supply function is supplied with clean water from the water supply source based on the signals of the electrodes 55 to 58, and has a bottomed space via the neutralizer water supply pipe 9 and the water supply part 33. 16 is introduced. That is, the clean water flows from directly above the bottomed space bottom wall 51 b of the bottomed space 16 and is discharged to the storage part 15 through the slit part 27.

  The clean water supplied to the storage unit 15 is first introduced into the first neutralization chamber 22 as shown in FIG. And if supply of clean water is continued and the water level is increased in the first neutralization chamber 22, the water level will be the first upstream opening 30a of the first main partition wall 17a and the second upstream of the second main partition wall 17b. It reaches the side opening 30b. Thereafter, until the drain introduction chamber 21 reaches the same water level as that of the first neutralization chamber 22, the water level of the first neutralization chamber 22 does not increase even if water is continuously introduced, and the drain introduction chamber 21. To the side. When the water level in the drain introduction chamber 21 reaches the water level in the first neutralization chamber 22, the water levels in the first neutralization chamber 22 and the drain introduction chamber 21 increase substantially in equilibrium.

  Thereafter, when the supply of clean water is continued, the water levels in the first neutralization chamber 22 and the drain introduction chamber 21 reach the lower end of the water supply control electrode 57 as shown in FIG. When the water level is reached, the water supply control electrode 57 is energized, and a combustion operation can be performed (hereinafter, the water level at this time is referred to as a combustible water level). That is, the water supply is stopped when the reservoir 15 reaches a combustible water level.

  At this time, the water level in the first neutralization chamber 22 is sufficiently higher than the first upstream opening 30a of the first main partition wall 17a and from the second upstream opening 30b of the second main partition wall 17b. Is sufficiently high, and is lower than the notch 31 of the first auxiliary partition wall 18a. In other words, the combustible water level is a water level through which the combustion gas that has passed through the drain introduction side pipe 37 and has flowed into the drain introduction chamber 21 from the drain introduction side connection portion 35 cannot flow downstream.

Thus, immediately after the installation of the combustion apparatus 1 or the neutralization apparatus 11 of the present embodiment, the water supply initial operation to the neutralization apparatus 11 for securing a sufficient water level is executed by the neutralizer water supply function. The
Hereinafter, it demonstrates as operation | movement of the combustion apparatus 1 after the water supply initial stage operation | movement to the neutralization apparatus 11. FIG.

  In the combustion apparatus 1, for example, when there is a request for hot water supply when a currant or the like is opened, clean water flows into an inlet pipe (not shown), and a flow rate sensor (not shown) provided in the middle of the inlet pipe detects the flow rate. The combustion unit 2 starts a combustion operation. And the combustion gas which generate | occur | produced with the combustion operation | movement flows toward the combustion case 5 below. Then, the combustion gas flows into a region where the primary heat exchanger 20 is disposed, and is further introduced into a region where the downstream secondary heat exchanger 25 is disposed. And the combustion gas heat-exchanged with the secondary heat exchanger 25 is exhausted outside from the exhaust pipe 10. FIG.

  On the other hand, the clean water supplied from the outside via a water intake pipe (not shown) is first introduced into the secondary heat exchanger 25. The clean water introduced into the secondary heat exchanger 25 mainly recovers the latent heat contained in the combustion gas and is heated thereby. As a result, the water vapor contained in the combustion gas is condensed, and drainage is generated on the surface of the secondary heat exchanger 25 and the like.

  When the clean water heated by the secondary heat exchanger 25 flows out, it is introduced from the upstream side of the primary heat exchanger 20. The clean water introduced into the primary heat exchanger 20 is heated by further exchanging heat with the combustion gas. That is, the primary heat exchanger 20 collects mainly sensible heat in the combustion gas and is heated by this. In this way, the clean water heated in the primary heat exchanger 20 flows out from the downstream side of the primary heat exchanger 20 and is supplied toward a hot water supply destination such as a currant or a bathtub.

  As described above, in the combustion apparatus 1, drainage is generated along with heat exchange in the secondary heat exchanger 25. The drain generated here gathers in a recovery unit (not shown) of the secondary heat exchanger 25 and is drained to the outside through the drain discharge system 7.

  More specifically, the drain recovered in the recovery part passes through the drain introduction side pipe 37 and is introduced into the neutralization device 11 from the drain introduction side connection part 35. That is, the drain generated in the secondary heat exchanger 25 flows into the drain introduction chamber 21 of the storage unit 15 through the drain introduction side connection part 35. At the same time or at another timing, the combustion gas flows into the drain introduction chamber 21.

  The drain that has flowed into the drain introduction chamber 21 flows out from the first upstream opening 30a and the second upstream opening 30b into the first neutralization chamber 22. Specifically, the drain that flows into the first neutralization chamber 22 from the drain introduction chamber 21 forms a water flow in a direction substantially orthogonal to the horizontal direction and passes through the first upstream opening 30a and the second upstream opening 30b. . That is, in the drain introduction chamber 21, as shown in FIG. 17, a water flow is formed within a range in which the first upstream opening 30a is separated from the second upstream opening 30b in the horizontal direction. Thereby, substances that can be deposited in the drain introduction chamber 21 are dispersed and deposited over a wide range. The drain introduced into the first neutralization chamber 22 reacts with the neutralizing agent filled in the first neutralization chamber 22 to perform neutralization. On the other hand, the combustion gas that has flowed into the drain introduction chamber 21 does not flow out toward the first neutralization chamber 22 due to the water seal structure formed by the initial operation of water supply.

  Thereafter, the combustion operation is continuously performed, and if further drain is introduced into the storage unit 15, the water levels in the drain introduction chamber 21 and the first neutralization chamber 22 increase in equilibrium. Then, as shown in FIG. 18A, when reaching the notch 31 of the first auxiliary partition wall 17a, the drain gets over the first auxiliary partition wall 18a and flows out to the second neutralization chamber 23 side. The drain that has flowed into the second neutralization chamber 23 is stored up to a certain water level in the primary space 65. When the water level reaches the drain downstream side opening 34 of the second auxiliary partition wall 18b, the drain flows out into the secondary space 66 as shown in FIG. Thereafter, if further introduction of drain is continued, the water level of the entire second neutralization chamber 23 increases to equilibrium, and the water level reaches the discharge bottom wall 51c as shown in FIG. Through the drain external discharge pipe 38.

  Thus, in the state where the combustion operation is started and the drain is normally discharged to the outside, the water level of the storage unit 15 is always maintained constant (hereinafter referred to as the normal water level). That is, as shown in FIG. 19, in the drain introduction chamber 21 and the first neutralization chamber 22, a water level (upstream normal water level) equivalent to the height of the lower end portion of the first auxiliary notch 31 is maintained, and the second neutralization chamber 23, the water level (downstream normal water level) equivalent to the height of the discharge bottom wall 51c is maintained.

And this normal water level is made into the low position rather than the position of the bottomed space 16 through which clean water passes. Specifically, the upstream normal water level is higher than the downstream normal water level and lower than the bottomed space bottom wall 51 b of the bottomed space 16. In other words, the upstream normal water level is higher than the combustible water level and lower than the lower end of the slope portion 54 of the bottomed space 16.
In addition, even after the hot water supply initial operation, when it is confirmed that the water level in the storage unit 15 is not a sufficient water level by the electrodes 55 to 48 due to some influence, the same operation as that of the initial water supply operation is performed. Control is executed.

  As described above, in the present embodiment, the first upstream opening 30a and the second upstream opening 30b provided between the drain introduction chamber 21 and the first neutralization chamber 22 are in different directions in the horizontal direction. Therefore, when the drain flows out from the drain introduction chamber 21 to the first neutralization chamber 22, a water flow that spreads over a wide range can be formed. As a result, in this embodiment, even if substances that can be deposited (“soot”, “trash”, and “neutralizing agent debris”) are present in the drain introduction chamber 21, they are deposited. Since the substance rides on the drain water flow and diffuses in a range of approximately 90 degrees, it does not concentrate intensively in one opening (passage hole) as in the prior art. As a result, clogging caused by the deposited material is less likely to occur. Also, even if one opening may be blocked by the deposited material, the other opening can be followed, so that the drain circulation itself is not disabled.

  In the present embodiment, since the mesh member 70 is attached to the cutout portion 31 of the first auxiliary partition wall 18a, the neutralization agent that reaches the cutout portion 31 is filled in the first neutralization chamber 22. Even if it exists, it can prevent that a neutralizing agent penetrate | invades into the 2nd neutralization chamber 23 side.

  Further, in the present embodiment, since a vertically long slit 59 communicating with the drain upstream side opening 30 is provided so that drain existing below the drain upstream side opening 30 can flow downstream, for example, a combustion device When 1 is not used for a long period of time, the drain on the drain introduction chamber 21 side can be discharged almost completely. Thereby, in this embodiment, it can prevent beforehand that a drain freezes in the storage part 15. FIG.

Here, the wall-hanging type combustion apparatus 1 has a demand to reduce the weight as much as possible from the viewpoint of fixed strength and the like. Therefore, attention was paid to the amount of the neutralizing agent, which is relatively heavy.
By the way, in this embodiment, since the 2nd neutralization chamber 23 is the downstream of the flow direction of a drain rather than the 1st neutralization chamber 22, the drain with weakened acidity flows in. Further, it is generally known that the neutralizing agent is consumed over time when immersed in a liquid.
Therefore, in this embodiment, in order to reduce the amount of neutralizing agent that can be immersed in the drain in the second neutralization chamber 23, the inside of the second neutralization chamber 23 is directed toward the bottom wall 51 (downward in the height direction) so that the opening area is large. The structure is reduced. Thereby, the amount of the neutralizing agent filled in the second neutralization chamber 23 is smaller as it goes downward in the height direction based on a predetermined height, and the amount is constant in the upper direction in the height direction. That is, in the present embodiment, in the second neutralization chamber 23, a portion where the drain can be immersed is reduced downward, and a portion where the drain cannot be immersed is reduced, so that the neutralizing agent is not reduced. The total amount can be reduced as compared with the prior art, and the neutralizing agent to be kept on standby can be sufficiently secured while appropriately neutralizing the drain.

In the above embodiment, the upstream openings 30a and 30b are provided in each of the two main partition walls 17a and 17b that intersect at approximately 90 degrees, and the drain flows out from the drain introduction chamber 21 in two different directions in the horizontal direction. However, the present invention is not limited to this, and a configuration in which upstream openings are provided in three or more different directions in the horizontal direction may be employed.
For example, as shown in FIG. 20, in order to form a drain introduction chamber, three main partition walls 73, 74, 75 are provided in a bent shape so as not to face each other, and each main partition wall 73, 74, 75 is provided. In the configuration in which the upstream openings 76a, 76b, 76c having the relationship as in the above embodiment are provided, and as shown in FIG. 21, a curved (or arc-shaped) main partition wall 77 is formed to form a drain introduction chamber. And upstream openings 78a, 78b, 78c that open in the tangential direction of the main partition wall 77 may be provided. Furthermore, as shown in FIGS. 22 and 23, a drain introduction chamber surrounded by a main partition wall 79, 80 having a square or circular shape in plan view is formed at a position away from the side wall 52 of the main body portion 12, The main partition walls 79 and 80 having the drain introduction chamber may be provided with upstream openings 81 and 82 formed in different directions in the horizontal direction.

In the said embodiment, although the structure provided with two 1st upstream opening 30a arranged in the horizontal direction in the 1st main partition wall 17a was shown, this invention is not limited to this, Even if it is one There may be three or more.
Further, in the present invention, instead of or in addition to the first main partition wall 17a, the second main partition wall 17b may include a second upstream side opening 30b arranged in the horizontal direction. Absent.

  In the above embodiment, since a water seal is formed between the drain introduction chamber 21 and the first neutralization chamber 22 to prevent the combustion gas from flowing, the passage holes between the drain introduction chamber 21 and the first neutralization chamber 22 are opened in different directions in the horizontal direction. Although the configuration is shown, the present invention is not limited to this. For example, if a water seal is formed between the first neutralization chamber 22 and the second neutralization chamber 23, the passage between the two is performed. The hole may be configured to open in different directions in the horizontal direction.

  In the above embodiment, the main partition wall 17 and the auxiliary partition wall 18 have a configuration in which a rectangular opening, a slit, or a cutout is mainly provided as a drain passage hole, but the present invention is not limited thereto. It may be a shape including a curve or a polygonal shape. Although the first main partition wall 17a has a distorted shape, it may be rectangular or polygonal. The second main partition wall 18b may have the same shape as the first upstream opening 30a provided in the first main partition wall 17a.

  Moreover, although the structure which applied the neutralization apparatus 11 to the reverse combustion type combustion apparatus 1 which uses liquid fuel was shown in the said embodiment, this invention is not limited to this, The general which uses gas fuel A configuration applied to a combustion apparatus may be used.

  Moreover, in the said embodiment, although the structure which filled the neutralizing agent in the one part area | region of the storage part 15 was shown, this invention is not limited to this, The neutralizing agent is filled into all the areas | regions of the storage part 15 The configuration may be shown.

  In the said embodiment, although the structure which changed the filling distribution of the neutralizing agent in the 1st neutralization chamber 21 and the 2nd neutralization chamber 23 was shown, this invention is not limited to this, The filling distribution of the neutralizing agent is shown. The configuration may not be changed.

In the said embodiment, although the structure which attached the mesh member 70 to the notch part 31 of the 1st auxiliary | assistant partition wall 18a was shown, this invention is not limited to this, it replaces with the notch part 31, and is replaced with the 1st auxiliary partition. The wall 18a itself may have a configuration in which an opening having a shape through which the neutralizing agent cannot pass is provided.
Further, the first auxiliary partition wall 18a may be simply provided with the notch 31 without attaching the mesh member 70 or providing an opening through which the neutralizing agent cannot pass.

  In the said embodiment, although the structure which provided the longitudinally long slit 59 in the 1st main partition wall 17a was shown, this invention is not limited to this, The structure which does not provide may be sufficient.

DESCRIPTION OF SYMBOLS 1 Combustion device 7 Drain discharge system 9 Neutralizer water supply pipe 11 Neutralization device 15 Reservoir 16 Bottomed space 17, 76, 78, 79, 80 Main partition wall 18 Auxiliary partition wall 19 Partition wall 21 Drain introduction chamber 22 First middle Japanese room 23 Second neutralization room 25 Secondary heat exchanger 29 Water supply port 30, 76, 78, 81, 82 Opening on the upstream side (passage hole)
36 Drain discharge section

Claims (5)

A neutralization device that is provided in a combustion device that heats hot water or a heat medium and forms part of a drain discharge system that neutralizes the drain that is generated mainly when recovering the latent heat of combustion gas and discharges it to the outside. And
Having a reservoir for storing drainage;
The storage part has two or more rooms arranged in series toward the downstream side in the flow direction of the drain, and a passage hole through which the drain provided between the rooms flows, and the drain introduced into the storage part. Is to flow into the downstream room sequentially through the passage hole,
The neutralization apparatus characterized by the passage hole between any one of the rooms being formed in two or more different directions in the horizontal direction. The reservoir has an introduction chamber into which drain is first introduced,
The passage holes formed in the two or more different directions are provided between the introduction chamber and another chamber adjacent to the introduction chamber on the downstream side of the drain flow direction. The neutralization apparatus described in 1.   The introduction chamber is partitioned with another chamber adjacent to the downstream side of the drain flow direction by two partition walls that intersect each other, and the passage holes are provided in each of the two partition walls. The neutralization apparatus according to claim 2, wherein   4. The passage hole in at least one direction among the passage holes formed in two or more different directions is formed by a plurality of holes arranged in a horizontal direction. The neutralization apparatus described.   A combustion section that burns fuel, a primary heat exchanger that mainly recovers sensible heat of the combustion gas generated in the combustion section, a secondary heat exchanger that mainly recovers latent heat of the combustion gas, and the secondary A drain discharge system for discharging drain generated in a heat exchanger to the outside, and a neutralization device according to any one of claims 1 to 4 forming a part of the drain discharge system. Combustion device.

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