JP6341406B2 - Through-wall combustion equipment - Google Patents

Description

  The present invention relates to a through-wall installation type combustion apparatus provided with a drain water neutralization container for neutralizing drain water by latent heat recovery.

  A type of combustion equipment that is mainly used for apartments and used as a replacement for a balance-type bath pot (hereinafter referred to as “BF pot”) placed next to a bathtub. 2. Description of the Related Art A wall-through type combustion device is known in which all the functions of a BF kettle are transferred to a supply / exhaust tube installation part. In addition, the combustion equipment of the type equipped with a latent heat recovery type heat exchanger is provided with a drain water neutralization container filled with a neutralizing agent for neutralizing the drain water because the generated drain water becomes strongly acidic. Yes.

  For example, the drain water neutralization container of the wall penetration type combustion device disclosed in Patent Literature 1 has a substantially rectangular parallelepiped shape with the wall penetration depth direction as the short direction in order to minimize the length of the wall penetration depth direction of the combustion device. have. Moreover, this drain water neutralization container is arrange | positioned inside the combustion apparatus at the most outdoor side of a wall penetration direction, or the most bathroom side.

JP 2012-237470 A

  The drain water neutralization container with a substantially rectangular parallelepiped shape with the wall penetration depth direction as the short direction has a small proportion of the drain water neutralization container in the wall penetration depth direction of the drain drainage path, so the flow gradient of the drain piping other than the neutralization container is reduced. In order to ensure, it is not possible to ensure a large difference in drain water inlet / outlet height in the drain water neutralization vessel. Therefore, the distance between the drain clogging detection portion inside the neutralization container and the steady water level cannot be increased, and there is a prisoner who erroneously detects the drain clogging.

  In addition, if the drain water neutralization container is arranged at the most bathroom side in the wall penetration direction inside the combustion equipment, it becomes necessary to attach and detach the drain water neutralization container during maintenance of the piping of the combustion equipment, and the ease of maintenance is impaired. . On the other hand, if the drain water neutralization container is placed on the most outdoor side in the wall penetration direction inside the combustion equipment, the drain water in the drain water neutralization container is likely to freeze in the winter due to cold air outside, so it is necessary to take measures to prevent freezing. It was a cause of cost increase.

  In the drain water neutralization container described in Patent Document 1, a partition wall is provided in a neutralizing agent filling portion filled with a neutralizing agent for ensuring neutralization performance to form a sealed water trap. This drain water neutralization container cannot form a sealed water trap when the drain water level is not filled up to the lower end of the partition wall of the neutralizer filling portion. However, under conditions where the amount of drain water is difficult to generate, such as in summer, some prisoners did not form a sealed water trap even if a hot water filling test operation was performed on the bathtub.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a through-wall combustion apparatus that prevents erroneous detection of drain clogging due to a temporary rise in water level. It is another object of the present invention to provide a through-wall combustion apparatus equipped with a neutralization container that can reliably prevent the heat retention performance of the neutralization container and can reliably prevent the inflow of combustion gas into the bathroom.

The wall penetration installation type combustion equipment of the present invention has the following composition (1)-(5).
(1) A wall-penetrating combustion apparatus attached to an opening provided on a wall surface of a bathroom, provided so as to penetrate the wall surface and extend to the depth side of the wall surface,
A combustion section having a burner for burning fuel gas;
A primary heat exchanger that recovers sensible heat from the combustion gas generated in the combustion section;
A secondary heat exchanger that recovers latent heat from the combustion gas that has passed through the primary heat exchanger;
It has a drain water neutralization container filled with a neutralizing agent that neutralizes drain water generated with latent heat recovery,
The drain water neutralization container is
A hollow neutralizing container main body that contains the neutralizing agent and has a length in the depth direction of the wall surface that is long with respect to the width;
A drain water inflow portion disposed below the secondary heat exchanger, for allowing the drain water to flow into the neutralization vessel body;
A drain water discharge part disposed on the bathroom side and positioned below the drain water inflow part to discharge the drain water from the neutralization container body;
A sealed water trap portion disposed between the drain water inflow portion and the drain water discharge portion;
A drain water clogging detection unit disposed between the drain water inflow unit and the sealed water trap unit,
The through-wall installation type combustion apparatus, wherein the drain water inflow portion and the drain water discharge portion are arranged in parallel with the depth direction of the wall surface.
(2) It is a wall penetration installation type combustion equipment given in (1),
The through-wall installation type combustion apparatus, wherein the drain water neutralization container is disposed on a side of the combustion section or the primary heat exchanger.
(3) The through-wall installation type combustion device according to (1) or (2),
Having an outer case covering its outer periphery,
Inside the outer case, the combustion section, the primary heat exchanger, the secondary heat exchanger, and the drain water neutralization container are disposed on the depth side of the wall surface,
Connection pipes connected to these and extending to the bathtub side are arranged on the bathroom side,
The through-wall installation type combustion apparatus, wherein the drain water neutralization container is disposed between the combustion part and a side surface of the outer case or between the primary heat exchanger and the side surface of the outer case.
(4) The through-wall installation type combustion device according to any one of (1) to (3),
The drain water discharge part of the drain water neutralization container has a pipe line extending upward from the bottom of the neutralization container body;
The wall characterized in that, at the connecting portion between the bottom of the neutralization container body and the drain water discharge part, the bottom part of the neutralization container body protrudes downward to form a water storage part to constitute a sealed trap part. Penetration type combustion equipment.
(5) The wall penetration type combustion device according to (4),
A through-wall combustion apparatus characterized in that a width of a water storage part of the sealed water trap part is shorter than a width of a bottom part that does not allow the neutralization container body to protrude downward.

  According to the present invention, by arranging the drain water inflow portion and the drain water drainage portion in parallel with the wall surface depth direction, the direction of the drain water flow can be made parallel to the wall surface depth direction. As a result, a large difference in the height of the inlet / outlet of the drain water can be secured inside the drain water neutralization vessel. As a result, by increasing the distance between the clogging detection unit and the steady water level (for example, 100 mm or more), it is possible to prevent erroneous detection of drainage clogging due to rainwater entering.

  Moreover, when arrange | positioning a drain water neutralization container in the side part of a combustion part, the drain water in a drain water neutralization container can be heat-retained with the radiant heat at the time of combustion. Moreover, when arrange | positioning at the side part of a primary heat exchanger, the drain water neutralization container can be heat-retained using the antifreezing apparatus of a heat exchanger. Therefore, it is not necessary to newly provide an antifreezing device, and the cost can be reduced. In addition, the neutralization reaction can be promoted by heat retention.

  Further, when the drain water neutralization container is disposed between the combustion part and the side surface of the outer case, or between the primary heat exchanger and the side surface of the outer case, the drain water neutralization container is more effectively Drain water can be kept warm. In addition, it is possible to inspect functional parts such as a pipe connection part and a gas solenoid valve from the front side of the main body located on the bathroom side, thereby improving maintainability. Further, even in the drain water neutralization container, it is possible to check from the side of the main body in a state where the main body is pulled out into the bathroom, and clogging confirmation, replacement of the drain water neutralization container and filling of the neutralizing agent are facilitated.

  In addition, on the downstream side of the clogging detection unit of the neutralization container, a part of the bottom of the neutralization container body protrudes downward and a water storage part is arranged to form a sealed trap part. Even if there is a small amount of drain water, a sealed water trap can be formed.

  Since the water storage portion is shorter than the portion where the drain water neutralization container does not protrude in the horizontal direction length through the wall, the volume of the sealed trap portion can be reduced. As a result, the amount of sealed drain water can be further reduced, and a sealed water trap can be formed even during the initial trial operation in summer.

The schematic diagram showing the operation principle of the wall penetration installation type combustion equipment concerning the embodiment of the present invention is shown. It is an example of installation of a wall penetration installation type combustion equipment concerning an embodiment of the present invention, and shows a perspective view when it sees from a bathtub short side. The front view (figure seen from the bathroom side) of the wall penetration installation type combustion equipment concerning the embodiment of the present invention is shown. It is a front view (figure seen from the bathroom side) of the wall penetration installation type combustion equipment concerning the embodiment of the present invention, and shows the state where the body front cover was removed. The side view of the wall penetration installation type combustion equipment concerning the embodiment of the present invention is shown. It is a side view of the wall penetration installation type combustion equipment concerning the embodiment of the present invention, and shows what fractured a part of drain water neutralization container. The rear view (figure seen from the outdoor side) of the wall penetration installation type combustion equipment concerning the embodiment of the present invention is shown. The bottom view of the wall penetration installation type combustion equipment concerning the embodiment of the present invention is shown. Sectional drawing of the drain water neutralization container employ | adopted as embodiment of this invention is shown. The front view of the drain water neutralization container shown in FIG. 9 is shown.

FIG. 1 is a schematic diagram for explaining the operation principle of a combustion device 1 (a through-wall combustion device) according to an embodiment of the present invention. Below, based on FIG. 1, the combustion apparatus 1 which concerns on this embodiment is demonstrated in relation to the flow of hot water, the flow of gas, etc. in addition to a basic structure.
The combustion apparatus 1 of the present embodiment is schematically configured to include a latent heat recovery heat exchange device 46 that performs a hot water supply function and a drain water neutralization vessel 7.

The latent heat recovery type heat exchange device 46 is provided with the combustion section 15 and the primary heat exchanger 14 and the secondary heat exchanger 13 provided thereon.
The combustion gas that has passed through the latent heat recovery heat exchanger 46 is exhausted from the exhaust port 53. A drain water tray 5 is provided at the bottom of the portion from the secondary heat exchanger 13 to the exhaust port 53, and these are connected to the drain water neutralization vessel 7 via the drain pipe 6. A drain hose 8 is connected to the drain water neutralization container 7.
In the combustion device 1 of this example, the combustion device body 1A is generally configured by housing the combustion section 15, the primary heat exchanger 14 and the secondary heat exchanger 13 in an exterior case (not shown). Further, a drain water neutralization container 7 is provided inside the combustion equipment main body 1A, and an exhaust hood (not shown in FIG. 1) is provided at the exhaust port 53 of the combustion equipment main body 1A. The drain water neutralization container 7 is filled with a necessary amount of a neutralizing agent 11 such as calcium carbonate.

(Flow of hot water)
First, in the combustion device 1 shown in FIG. 1, the flow of hot water in the latent heat recovery heat exchange device 46 will be described. Hot water is supplied from a water supply pipe connection 2 provided in the combustion apparatus main body 1 </ b> A, and the water flow supplied to the latent heat recovery heat exchanger 46 can be detected by the water amount sensor 3.

  The hot water that has passed through the water amount sensor 3 is guided to the secondary heat exchanger 13 via the connection pipe 13A, and the latent heat is recovered from the combustion gas. Further, the heat is guided to the primary heat exchanger 14 through the connecting pipe 14A, and the sensible heat from the combustion gas is recovered by the primary heat exchanger 14. The hot water from which the sensible heat has been recovered passes through the hot water supply pipe connection portion 22 that connects the hot water supply pipe 28 that supplies hot water to the bathroom or the like via the connection pipe 22A, and is used from the hot water tap. Further, this hot water may be supplied into the bathtub 32 through the hot water filling solenoid valve 18 and the pouring connecting pipe 24A and the pouring pipe connecting portion 24.

(Flow of combustion gas)
Next, the flow of the fuel gas in the combustion device 1 shown in FIG. 1 will be described.
In the latent heat recovery type heat exchanging device 46, the fuel gas is supplied from the gas pipe connection part 23 via the gas solenoid valve 16 to the combustion part 15 via the connection pipe 15A and burns to generate high-temperature combustion gas. . The combustion gas first passes through the primary heat exchanger 14 and radiates sensible heat at that time. It becomes low-temperature combustion gas after releasing sensible heat.
Next, this combustion gas passes through the secondary heat exchanger 13 and radiates latent heat at that time. The combustion gas that has radiated the latent heat is exhausted from the exhaust port 53 to the outside of the instrument.

(Flow of drain water)
Next, the flow of the drain water 44 will be described. When latent heat is recovered from the combustion gas in the secondary heat exchanger 13, the temperature of the combustion gas decreases from about 200 ° C to about 60 ° C. At the same time, water vapor contained in the combustion gas is condensed, and condensed water is generated in the secondary heat exchanger 13.
The condensed water becomes a strongly acidic drain water 44 having a pH of about 3 including a nitrogen oxide component in the combustion gas. For this reason, these drain waters 44 generated in the secondary heat exchanger 13 are collected in the drain water tray 5 for collecting them, and after passing through the drain pipe 6 connected to the drain water tray 5, It flows into the drain water neutralization container 7 filled with calcium carbonate.
The drain water neutralization container 7 is a tank provided to neutralize the drain water 44 and is filled with a neutralizing agent 11 such as calcium carbonate. The drain water 44 neutralized in the drain water neutralization vessel 7 passes through the drain hose 8 and is drained to the outside through the drain pipe penetrating portion 12. The detailed configuration of the drain water neutralization container 7 will be described later.

(Example of installation in a bathroom)
FIG. 2 is a view showing an installation example when the combustion device 1 (wall penetration installation type combustion device) of the present embodiment is installed in the bathroom 19 and is a perspective view when viewed from the short side of the bathtub. The combustion device 1 is attached to an opening 17 </ b> A provided on the wall surface 17 of the bathroom 19, passes through the wall surface 17, and is provided to extend to the outdoor 21 side (wall surface depth side).
In each figure, the XYZ coordinate system is described. In this specification, as shown in the XYZ coordinate system of each figure, the vertical direction is the Z direction, the horizontal direction is the wall surface extending direction is the X direction, the horizontal direction is the depth of the wall surface of the bathroom 19. The description will be made with the side as the Y direction.

  The opening 17A of the wall surface 17 on which the combustion device 1 is installed has a hole size of approximately 240 mm in the horizontal direction (X direction) and approximately 360 mm in the height direction (Z direction). That is, since the area of the opening 17A is limited, the functional components in the wall penetration part are arranged side by side in the wall penetration depth direction (Y direction). Thereby, the combustion apparatus 1 is long in the wall penetration depth direction (Y direction), and has a shape that extends longer in the Y direction than the length in the X direction in many cases.

Various pipes are connected to the bathroom 19 side of the combustion device 1. These pipes include a water supply pipe 27 that supplies water to the combustion device 1, a hot water supply pipe 28 that supplies hot water heated by the combustion device 1 into the bathroom, a gas pipe 29 that supplies fuel to the combustion device 1, There is a pouring pipe 30 or the like for supplying heated hot water to the bathtub 32.
The pouring pipe 30 is connected to the circulation fitting 9 attached to the bathtub 32. The hot water supply pipe 28 is connected to a faucet 38 installed on the upper edge surface or the like of the bathtub 32. A removable apron 20 is attached to the bathtub 32.

The combustion device 1 has a configuration that is casing by an outer case 51 (housing). The exterior case 51 is provided with an intake port 10, an exhaust port 53, and an exhaust hood 4.
Combustion air sucks outdoor 21 air into the appliance body from an intake port 10 formed in the lower part on the outdoor side of the combustion device 1 and is supplied to the combustion unit 15 (see FIG. 1). The combustion gas generated in the combustion unit 15 and dissipating sensible heat and latent heat is discharged to the outdoors 21 through an exhaust port 53 formed in the upper part on the outdoor side of the combustion device 1. An exhaust hood 4 is attached to the exhaust port 53.

In FIG. 3, the front view which looked at the combustion apparatus 1 from the bathroom 19 side is shown. In addition, in this specification, the combustion apparatus 1 makes the figure seen from the bathroom side a front view, and makes the figure seen from the outdoor side a back view. Further, the bathtub side will be described as the front side of the combustion device 1 and the outdoor side will be described as the rear side of the combustion device 1.
Below the combustion device 1, a water supply pipe connection 2 connected to the water supply pipe 27, a hot water supply pipe connection 22 connected to the hot water supply pipe 28, and a gas pipe connection 23 connected to the gas pipe 29. The pouring pipe connecting portion 24 is connected to the pouring pipe 30.

The main body front cover 26 provided inside the bathroom in the combustion device 1 is detachable, and is removed at the time of installation or maintenance.
FIG. 4 shows a front view of the combustion device 1 with the main body front cover 26 removed. By removing the main body front cover 26 that waterproofs the inside of the main body of the combustion device 1, the controller 50, water supply, hot water supply, connection pipes 13A, 15A, 22A used for gas supply, etc. Maintenance is possible.
Furthermore, the parts located on the outdoor side in the depth direction through the wall can be maintained by removing the main body screw fixing portions 37 at the four corners that fix the exterior case 51 and the inside of the main body on the bathroom side and pulling them out to the bathroom side.

  5 and 6 are side views of the combustion device 1. 5 and 6, a part of the outer case 51 is shown through. 5 and 6 are side views from the same direction, and in FIG. 6, a part of the drain water neutralization container 7 is broken so that the components inside the main body can be easily seen.

A combustion unit 15 is disposed below the combustion device 1 having a burner. A fan 58 that blows air taken from outside air into the combustion unit 15 is disposed in the upper front portion of the combustion unit 15. The primary heat exchanger 14 is disposed above the combustion unit 15, and the secondary heat exchanger 13 is disposed above the primary heat exchanger 14, thereby constituting a latent heat recovery type heat exchange device 46. Further, an exhaust port 53 formed in the upper part on the outdoor side is connected to the downstream side of the secondary heat exchanger 13 in the combustion gas path.
In order to discharge the combustion gas from the exhaust port 53 to the outdoor side 21, the combustion unit 15, the primary heat exchanger 14, and the secondary heat exchanger 13 are preferably arranged on the most outdoor side inside the combustion device 1. By arranging in this way, the connection pipes 13A, 15A, 22A, the gas solenoid valve 16 and the like used for water supply, hot water supply, and gas supply are necessarily arranged on the bathroom side inside the combustion device 1. Become.

  The drain water tray 5 necessary for collecting the drain water is formed to bulge downward on the downstream side of the secondary heat exchanger 13 where the drain water can be easily collected. By setting it as such a shape, the drain water which generate | occur | produces with the latent heat collection | recovery in the secondary heat exchanger 13 can be collected and collected in one place. The drain water collected in the drain water receiving tray 5 passes through the drain pipe 6, the drain water neutralization container 7, the drain hose 8, and the drain pipe penetrating part 12 and is discharged to the bathroom 19 side.

As shown in a sectional view in FIG. 9, the drain water neutralization container 7 includes a hollow neutralization container main body 34 that contains the neutralizing agent 11, a drain water inflow portion 33 that allows the drain water to flow into the neutralization container main body 34, It has a drain water discharge part 35 for discharging drain water from the neutralization container main body 34. The drain water introduced from the drain pipe 6 flows into the drain hose 8 through the drain water inflow portion 33, the neutralization container main body 34, and the drain water discharge portion 35. The drain water neutralization container 7 has a substantially rectangular parallelepiped shape. Further, the drain water neutralization container 7 has a flat shape that is long in the depth direction (Y direction) of the combustion device 1 and short in the width direction (X direction), and forms a longitudinal direction in the depth direction (Y direction). Yes.
As shown in FIG. 5, the drain water neutralization container 7 has a drain water inflow portion 33 and a drain water discharge portion 35 arranged in the longitudinal direction inside the combustion device 1. That is, the drain water inflow portion 33 and the drain water discharge portion 35 are arranged in parallel to the wall surface depth direction. Moreover, the drain water discharge part 35 is arrange | positioned inside the combustion apparatus 1 at the bathroom side, and the drain water inflow part 33 is arrange | positioned at the outdoor side.

The drainage gradient of the drain water drainage path is determined by the length and height difference of the pipe path from the drain water tray 5 to the drain pipe penetration part 12 in the bathroom. Therefore, if the drain water drainage path becomes long, the drainage gradient cannot be made large. In addition, in the drain water neutralization container 7 constituting a part of the drain water drainage path, it is impossible to ensure a sufficient level difference between the drain water inflow portion 33 and the drain water discharge portion 35.
In the combustion device 1 of the present embodiment, the drain water inflow portion 33 and the drain water discharge portion 35 are arranged in parallel with the depth direction of the wall surface. As a result, the drain water drainage path has a larger proportion in the depth direction (Y direction) inside the combustion device 1, and conversely the lengths of the drain pipe 6 and the drain hose 8 become shorter. 6. The height difference due to the flow gradient of the drain hose 8 can be reduced. Therefore, in the drain water neutralization container 7, the difference in height between the drain water inflow portion 33 and the drain water discharge portion 35 can be made large.

  It is preferable that the drain water inflow portion 33 is disposed directly below the drain water tray 5. By providing the drain water inflow portion 33 directly below the drain water receiving tray 5, the height difference between the drain water receiving tray 5 and the drain water inflow portion 33 can be minimized. Thereby, the height difference of the drainage path can be further increased. In addition, the drain pipe 6 can be shortened as much as possible. Since the drain pipe 6 through which the acidic drain water passes needs to be made of an expensive material in order to avoid corrosion, the cost can be reduced by shortening the drain pipe 6.

FIG. 7 shows a rear view of the combustion device 1 viewed from the outdoor 21 side, and FIG. 8 shows a bottom view of the combustion device 1. In these drawings, a part of the outer case 51 is shown in a transparent manner, and some components are omitted for explanation.
The drain water neutralization container 7 is disposed between the side portions of the combustion unit 15 and the primary heat exchanger 14 and the side surface of the outer case 51 inside the combustion device 1. The drain water neutralization container 7 has a flat shape with the depth direction (Y direction) of the combustion device 1 as the longitudinal direction, and is disposed so that the side surface having the largest area is along the combustion unit 15 and the primary heat exchanger 14. Has been.

The primary heat exchanger 14 is equipped with a ceramic heater 59 for preventing freezing in winter (see FIGS. 6 and 7). The ceramic heater 59 is fixed to a pipe 60 (snake tube) brazed to the outer cylinder to obtain sensible heat from the outer cylinder of the primary heat exchanger 14. The ceramic heater 59 is disposed on the side surface or the back surface of the primary heat exchanger 14. This ceramic heater 59 is energized in the winter when the outside air temperature decreases, and heats the copper and stainless steel, which are the materials of the primary heat exchanger 14, to keep the water inside the snake tube 60 warm. The ceramic heater 59 rises in temperature when energized, thereby preventing the water inside the primary heat exchanger 14 from freezing, and at the same time, maintaining the heat-retaining effect for the atmosphere around the primary heat exchanger 14. Can be obtained. Therefore, by disposing the drain water neutralization container 7 along the side of the primary heat exchanger 14, even if the temperature of the outdoor 21 decreases (for example, about −15 ° C.), the primary heat exchanger 14. The atmosphere of the drain water neutralization container 7 disposed on the side surface is maintained at 0 ° C. or higher. Thereby, it becomes possible to prevent the drain water in the drain water neutralization container 7 from freezing.
In addition, during the combustion operation of the combustion device 1, the atmosphere of the drain water neutralization container 7 and the drain water inside the drain water neutralization container 7 are kept warm by radiant heat due to the temperature rise of the primary heat exchanger 14 to prevent freezing. The neutralization reaction can be promoted.

(Drain water neutralization container)
The detailed structure of the drain water neutralization container 7 will be described with reference to FIGS. The drain water neutralization container 7 includes a drain water inflow part 33, a hollow neutralization container main body 34 (neutralizing agent filling part) that contains the neutralizing agent 11, and a sealed water trap in order from the upstream side of the drain water drainage path. A unit 36 and a drain water discharge unit 35. In addition, a drain water clogging detection unit 43 is provided above the neutralization container main body 34.

The neutralization container main body 34 is a vertically long and thin resin that is roughly composed of side walls 7a, 7a having the largest area, a narrow and vertically long back wall 7b and a front wall 7c, a bottom wall 7d and a ceiling wall 7e. It is a tank made in one piece. A drain water inflow portion 33 is formed on the center side in the height direction of the back wall 7b, and a drain water discharge portion 35 is formed on the bottom side of the front wall 7c.
In the center of the ceiling portion of the neutralizing container main body 34, a cylindrical charging portion 7f constituting a neutralizing agent charging port is formed. A screw portion is formed on the outer peripheral portion of the insertion portion 7f, and a cap is detachably attached to the insertion portion 7f.

Since the drain water neutralization container 7 is integrally molded by blow molding, the drain water neutralization container 7 is blow molded along the center portions in the width direction of the back wall 7b, front wall 7c, bottom wall 7d, and ceiling wall 7e. The formed compression ribs 42b, 42c, 42d, and 42e are formed. The compression ribs 42 b, 42 c, 42 d, 42 e are formed on almost the entire circumference of the drain water neutralization container 7 and serve to reinforce the drain water neutralization container 7.
Of these, the pair of compression ribs 42e and 42e formed on the ceiling wall 7e and the compression rib 42d formed on the bottom wall 7d are used for fixing the drain water neutralization container 7 inside the combustion device 1. (I will explain in detail later.)

  The drain water inflow portion 33 includes an inflow pipe 33A, a reservoir portion 33B formed between the inflow tube 33A and the back wall 7b, and an inflow side formed vertically at a connection portion between the pool portion 33B and the back wall 7b. It is comprised from the slit part 33a. The inflow side slit portion 33a has a slit width smaller than the particle diameter of the neutralizing agent 11, and the drain water 44 can flow into the drain water neutralization vessel 7 through the inflow side slit portion 33a. 11 is configured not to go outside through the inflow side slit portion 33a.

  The drain water discharge part 35 includes a pipe line 35A formed integrally with the front wall 7c so as to rise upward along the front wall 7c, and a pipe line 35B continuous downward in a U shape from the upper end of the pipe line 35A. I have. A discharge pipe 35C to which the drain hose 8 is connected is formed at the downstream end of the pipe line 35B. Moreover, the drain water discharge part 35 is provided with the discharge side slit part 35a distribute | arranged center lengthwise between the pipe line 35A and the pipe line 35B. The discharge-side slit portion 35a is arranged in the center vertically long and has a slit width smaller than the particle diameter of the neutralizing agent 11. The slit width can be the same as that of the inflow side slit portion 33a, and the drain water 44 can be discharged while preventing the neutralizing agent 11 from flowing out.

A sealed water trap portion 36 is formed at a connection portion between the neutralization container main body 34 and the drain water discharge portion 35. A connecting portion between the bottom portion 34a of the neutralizing container main body 34 and the pipe 35A of the drain water discharge portion 35 is formed with a water storage portion 36a protruding downward. The drain water 44 is stored in the water storage section 36a, and the drain water 44 reaches the lower end of the partition wall 36b that divides the pipe line 35A and the neutralization container body 34, thereby functioning as a sealed trap section 36. The lower end of the partition wall 36b is formed on the same surface as the bottom 34a of the neutralization container main body 34 (or below the bottom 34a). Therefore, even if the drain water 44 having a constant water level is not stored in the bottom 34a of the neutralization container main body 34, the sealed trap can function if the drain water is stored in the water storage section 36a. That is, with such a configuration, the amount of drain water that causes the sealed water trap to function can be reduced. Furthermore, the entire bottom wall 7d can be inclined forward (to the water storage part 36a side). Accordingly, even when the amount of the drain water 44 is small, the drain water 44 flows from the bottom wall 7d into the water storage section 36a, and the sealed trap can be functioned regardless of the installation state.
By causing the sealed water trap to function, it is possible to prevent the exhaust gas entering the neutralization container body 34 together with the drain water 44 from being discharged outside the combustion device 1.

In the drain water neutralization container 7 of the present embodiment, the X direction dimension (width) W2 of the water storage portion 36a protruding downward is about 30 mm. Moreover, the X direction dimension (width | variety) W1 of the neutralization container main body 34 which is not made to protrude below is 50 mm. (See Figure 10)
Thus, since the width W2 is shorter than the width W1, it is possible to further reduce the amount of water required to make the sealed trap function. In addition, in the drain water neutralization container 7 of this embodiment, the volume of the water storage part 36a is about 30 cc. Thereby, the drain water 44 is stored in the water storage section 36a in a test run operation of about several minutes, and the sealed water trap can function.

In addition, it is not necessary to form a sealed structure inside the neutralization container body 34 by arranging the sealed water trap part 36 at the connection part between the neutralization container body 34 and the drain water discharge part 35. Therefore, the freedom degree of the shape of the neutralization container main body 34 improves.
Specifically, a partition plate for sealing water is not required inside the neutralization container main body 34. Thereby, the inside of the neutralization container main body 34 can be made into a single space. Therefore, the filling amount of the neutralizing agent 11 with respect to the neutralization container of the same size increases, so that the neutralization performance can be improved and the drain water neutralization container 7 can be downsized. Furthermore, by making the internal space of the neutralization container main body 34 a single space without a partition or the like, it is possible to use a single inlet for the neutralizing agent, and the neutralizing agent filling operation can be reduced.

In the front wall 7c, a drain water clogging detection part 43 is formed above the sealing trap part 36. The clogging detection unit 43 is formed so as to bulge out in a barrel shape outside the front wall 7c, and is integrally formed from a resin constituting the drain water neutralization container 7 at the time of blow molding.
A detection-side slit portion 43 a is formed at a boundary portion between the neutralization container main body 34 and the drain water clogging detection portion 43. The slit width of the detection side slit portion 43a can be the same width as that of the inflow side slit portion 33a and the discharge side slit portion 35a, and prevents the neutralizing agent 11 from flowing out to the drain water clogging detection portion 43. .

A detection device 39 is provided above the barrel-shaped hollow clogging detection unit 43. The detection device 39 can detect when drain water flows into the clogging detection unit 43. When clogging occurs in the drain water drainage path downstream from the neutralization container main body 34, the drain water level in the neutralization container main body 34 rises and the drain water flows into the clogging detection unit 43. The detection device 39 detects this and detects the occurrence of clogging.
The clogging detection unit 43 is preferably provided at a position lower than the drain water inflow unit 33. With such a positional relationship, the clogging can be detected before the clogging occurs and the drain water flows back to the drain water inflow portion 33.
The clogging detection device 39 may be a screw, a metal rod, a thermistor, or the like, but is not particularly limited. In the present embodiment, an elongated rod-like clogging detection device 39 that passes vertically through the ceiling of the clogging detection unit 43 is provided.

  The neutralization container main body 34 of the drain water neutralization container 7 of the present embodiment has a longitudinal horizontal direction L (that is, a wall penetration depth direction and a Y direction) of about 200 mm, and a width W1 (that is, the X direction) of about 50 mm at the maximum. The shape is a substantially rectangular parallelepiped with a height (ie, Z direction) of 150 mm. Thereby, the neutralization container main body 34 has a volume of 1.5 L in which the neutralizing agent 11 necessary for neutralizing the amount of drain water generated by the combustion load corresponding to 15 years can be stored.

As described above, in the drain water neutralization container 7, the drain water inflow portion 33 and the drain water discharge portion 35 are disposed in parallel with the wall surface depth direction (Y direction) (for example, FIG. 5). reference). Thereby, the drainage route of drain water becomes short. Moreover, in the drain water neutralization container 7 which comprises a part of drainage path, the height difference of the drain water inflow part 33 and the drain water discharge part 35 can be taken large.
In the combustion device 1 of the present embodiment, the wall penetration depth from the drain water tray 5 to the drain pipe penetration portion 12 based on installation conditions (the opening 17A of the wall surface 17 is about 240 mm in the X direction and about 360 mm in the Z direction). The direction is 500 mm and the height direction is 300 mm. At this time, the longitudinal direction (Y direction) L of the drain water neutralization container 7 is set to 200 mm. The drain water discharge path from the drain water discharge part 35 of the drain water neutralization container 7 to the drain pipe penetration part 12 needs a certain gradient. By arranging the longitudinal direction L of the drain water neutralization container 7 to 200 mm and arranging it in the Y direction, the volume of the neutralization container can be secured and the distance from the drain water discharge part 35 to the drain pipe penetration part 12 can be shortened. By shortening this distance, even if the drain water discharge part 35 is provided at a low position, the gradient of the discharge path from the drain water discharge part 35 to the drain pipe penetration part 12 can be secured. That is, the drain water discharge part 35 can be provided in a low position.
Thereby, the height difference H1 between the drain water inflow portion 33 and the drain water discharge portion 35 can be set to 125 mm, and the vertical separation distance H2 between the detection device 39 of the clogging detection portion 43 and the steady water level can be set to 100 mm. . (See Figure 9)
In general, the vertical separation distance H2 between the detection device 39 of the clogging detection unit 43 and the steady water level is secured to a vertical separation distance of about 100 mm, and the false detection can be prevented by taking a larger distance. This is because when the distance H2 is small, a large amount of rainwater enters from the exhaust port 53 and flows into the drain water neutralization vessel 7 via the drain pipe 6, or foreign matter such as minute dust is present in the drain drainage path. This is because there is a captive that erroneously detects drain clogging due to a rise in water level due to temporary drainage failure in the case of intrusion. Therefore, by arranging the drain water inflow portion 33 and the drain water discharge portion 35 of the drain water neutralization container 7 in the combustion device 1 in parallel with the wall surface depth direction (Y direction), erroneous detection can be suppressed.

Next, the fixing method of the drain water neutralization container 7 is demonstrated based on FIG.5, FIG.6, FIG.8 and FIG. The drain water neutralization container 7 is fixed by a support fitting 41 and a pair of suspension fittings 40. The support metal fitting 41 is a metal fitting for holding the drain water neutralization container 7 from below, and the suspension metal fitting 40 is a metal fitting for fixing the drain water neutralization container 7 at the upper part.
The support fitting 41 is fixed to the side surface of the combustion unit 15 by fixing means such as screws or spot welding, and has a horizontal piece 41a extending in the horizontal direction.
As shown in FIG. 8, a long hole 41b is formed in the horizontal piece 41a, and this long hole 41b is a compression rib 42d that protrudes downward from the bottom wall 7d of the drain water neutralization container 7 (see FIG. 9). It is the size corresponding to. More specifically, the long hole 41b is perforated with a width of 5 mm, and the compression rib 42d is formed with a width of 3 mm. The drain water neutralization container 7 has its approximate position determined by the compression rib 42d being inserted into the long hole 41b, and is held on the horizontal piece 41a.

As shown in FIG. 6, the pair of hanging metal fittings 40 is fixed to the combustion gas exhaust unit 61 by fixing means such as screws or spot welding. The hanging metal fitting 40 has a vertical piece 40a extending vertically downward, and a through hole 40b is provided in the vertical piece 40a. As shown in FIG. 9, a pair of compression ribs 42e and 42e are formed on the ceiling wall 7e of the drain water neutralization vessel 7, and the compression rib 42e and the through hole 40b of the vertical piece 40a can be fixed by screws. Has been placed. The drain water neutralization container 7 is fixed and held inside the combustion device 1 by fixing these with screws.
In this way, the drain water neutralization container 7 is held by inserting the compression rib 42d into the long hole 41b of the horizontal piece 41a in the lower part and fixed with two screws at the upper part, Easy removal is possible. Therefore, the maintenance work of the drain water neutralization container 7 can be easily performed. The drain water neutralization container 7 is removed in a state where the inside of the main body of the combustion device 1 is pulled out to the bathroom side.

  Although various embodiments of the present invention have been described above, each configuration in each embodiment and combinations thereof are examples, and additions, omissions, substitutions of configurations, and the like can be made without departing from the spirit of the present invention. And other changes are possible. The present invention is not limited by the embodiment.

DESCRIPTION OF SYMBOLS 1 ... Combustion apparatus (wall penetration installation type combustion apparatus), 5 ... Drain water tray, 7 ... Drain water neutralization container, 11 ... Neutralizing agent, 13 ... Secondary heat exchanger, 14 ... Primary heat exchanger, 15 ... Combustion 17: Wall surface, 17A ... Opening, 19 ... Bathroom, 21 ... Outdoor, 32 ... Bathtub, 33 ... Drain water inflow part, 34 ... Neutralization container body, 34a ... Bottom part, 35 ... Drain water discharge part, 35A, 35B ... Pipe line, 36 ... Sealed trap part, 36a ... Water storage part, 36b ... Partition wall, 39 ... Detection device, 42b, 42c, 42d, 42e ... Compression rib, 43 ... Drain water clogging detection part (detection part), 44 ... Drain water, 46 ... Latent heat recovery heat exchanger, 51 ... Exterior case, 59 ... Ceramic heater, W1, W2 ... Width

Claims (4)

It is attached to the opening provided on the wall surface of the bathroom, and is a wall penetration type combustion device provided to penetrate the wall surface and extend to the depth side of the wall surface,
A combustion section having a burner for burning fuel gas;
A primary heat exchanger that recovers sensible heat from the combustion gas generated in the combustion section;
A secondary heat exchanger that recovers latent heat from the combustion gas that has passed through the primary heat exchanger;
It has a drain water neutralization container filled with a neutralizing agent that neutralizes drain water generated with latent heat recovery,
The drain water neutralization container is
A hollow neutralizing container main body that contains the neutralizing agent and has a length in the depth direction of the wall surface that is long with respect to the width;
A drain water inflow portion disposed below the secondary heat exchanger, for allowing the drain water to flow into the neutralization vessel body;
A drain water discharge part disposed on the bathroom side and positioned below the drain water inflow part to discharge the drain water from the neutralization container body;
A sealed water trap portion disposed between the drain water inflow portion and the drain water discharge portion;
A drain water clogging detection unit disposed between the drain water inflow unit and the sealed water trap unit,
The drain water inflow portion and the drain water discharge portion are arranged in parallel with the depth direction of the wall surface ,
The through-wall installation type combustion apparatus, wherein the drain water neutralization container is disposed on a side of the combustion section or the primary heat exchanger . It is a wall penetration installation type combustion equipment according to claim 1 ,
Having an outer case covering its outer periphery,
Inside the outer case, the combustion section, the primary heat exchanger, the secondary heat exchanger, and the drain water neutralization container are disposed on the depth side of the wall surface,
Connection pipes connected to these and extending to the bathtub side are arranged on the bathroom side,
The through-wall installation type combustion apparatus, wherein the drain water neutralization container is disposed between the combustion part and a side surface of the outer case or between the primary heat exchanger and the side surface of the outer case. It is a wall penetration installation type combustion equipment according to claim 1 or 2 ,
The drain water discharge part of the drain water neutralization container has a pipe line extending upward from the bottom of the neutralization container body;
The wall characterized in that, at the connecting portion between the bottom of the neutralization container body and the drain water discharge part, the bottom part of the neutralization container body protrudes downward to form a water storage part to constitute a sealed trap part. Penetration type combustion equipment. It is a wall penetration installation type combustion equipment according to claim 3 ,
A through-wall combustion apparatus characterized in that a width of a water storage part of the sealed water trap part is shorter than a width of a bottom part that does not allow the neutralization container body to protrude downward.

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