JPH11304140A - Drain neutralizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the drain neutralizing performance of a drain neutralizing device. SOLUTION: A drain neutralizing device which has a drain tank 1 for storing a drain caused by the condensation of steam contained in an exhaust combustion gas and neutralizes the drain in the tank 1 by using a neutralizer 8 and, at the same time, discharges a fixed amount of drain from the tank 1 when the stored amount of drain reaches a prescribed value is provided with a detecting means 3 which detects prescribed timing during the period from the completing time of the above-mentioned discharging operations to the start of the next discharging operations and a dumping means 2 which dumps the neutralizer 8 that melts in the drain and flows out of the tank 1 together with the drain when the drain is discharged by the amount suitable for neutralizing the fixed amount of drain in response to the output of the detecting means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain neutralizer, and more particularly to a drain neutralizer for neutralizing drain generated by condensation of water vapor in combustion exhaust with a neutralizing agent.

[0002]

2. Description of the Related Art As a recent hot water heater, there is a hot water heater in which heat exchange efficiency is improved by absorbing latent heat in addition to sensible heat from combustion exhaust gas in a heat exchanger for heating hot water. In this case, since the combustion exhaust gas is cooled down to the dew point or lower, water vapor in the combustion exhaust gas is condensed and a large amount of drain is generated. For this reason, the water heater is provided with a discharge path for discharging the drain.

[0003] However, this drain has a high acidity (for example, about pH 3) due to the dissolution of acidic components contained in the combustion exhaust gas. A drain neutralizer is provided. FIG. 7 is a diagram showing an outline of a configuration of a conventional drain neutralization device. The drain neutralizing device shown in FIG. 1 has a drain tank (9) in which drain flows in and is stored. In the drain tank (9), drain from the discharge path flows in and is stored. A storage chamber (9a) to be used and a siphon (9b) for discharging the drain stored in the drain tank (9) are provided. The storage chamber (9a) contains a predetermined amount of a solid neutralizing agent (90) for neutralizing the drain in advance.

[0004] In this case, the water level of the drain in the drain tank (9) rises with the inflow of the drain into the drain tank (9), but when the water level reaches the maximum water level shown in FIG. Is discharged by the siphon (9b) and the water level is
-It goes down to the minimum water level shown in b. That is, a certain amount of drain from the lowest water level to the highest water level is discharged.
After that, the drain that has flowed into the drain tank (9) is stored again in the aforementioned fixed amount. In this way, the storage and discharge of the drain are alternately repeated.

At the time of the storage, a drain tank is provided.
The acidic drain in (9) is neutralized by reacting with the neutralizing agent (90) to change the pH value to an alkaline side.

[0006]

In this case, when the amount of combustion or the like in the above-mentioned water heater changes, the amount of generated drain also changes accordingly. In the drain tank (9), when the drain is stored once. The storage time until discharge at the tank changes. However,
If the amount of drain generated is too small and the storage time is too long, the contact time between the neutralizing agent (90) and the drain becomes longer, so that the reaction with the neutralizing agent (90) becomes an overreaction, It becomes alkaline beyond the reference range of neutralization (for example, pH 5.8 to 8.6).

Conversely, if the amount of drain generated is large and the storage time is too short, the contact time between the neutralizing agent (90) and the drain becomes short, so that the reaction between the neutralizing agent (90) and the neutralizing agent (90) occurs. Insufficiently, it does not reach the above-mentioned standard range of neutralization, and is discharged as acidic. Therefore, in this case, the drain neutralization performance tends to be unstable. An object of the present invention is to stabilize drain neutralization performance.

[0008]

Means for Solving the Problems To solve the above-mentioned problems, the solution of the present invention is as follows. "The present invention has a drain tank for storing a drain generated by condensation of water vapor in combustion exhaust gas, While the drain in the tank is neutralized using a neutralizing agent, when the storage amount of the drain reaches a predetermined amount, a certain amount of drain is discharged from the drain tank, and the storage and discharge of the certain amount of drain are performed. A drain neutralization device that alternately repeats as one cycle, comprising: a detecting means for detecting the one cycle; and a neutralizing agent in an amount suitable for neutralizing the fixed amount of drain in response to an output of the detecting means. Charging means for charging the neutralizing agent which is in the drain and becomes a fluid state to be discharged together with the drain at the time of discharging, into the drain tank,
Is provided. "

In this method, an amount of neutralizing agent suitable for neutralizing the constant amount of drain is charged into the drain tank every one cycle of storing and discharging the constant amount of drain. The drain is discharged from the drain tank in a neutralized state. In this method, an amount of the neutralizing agent suitable for neutralization of the fixed amount of drain in the drain tank reacts, so that the amount of generated drain is small and the storage time of the drain in the drain tank is prolonged. However, the drain does not excessively react with the neutralizing agent. Conversely, even if the amount of generated drain is large, insufficient neutralization of drain does not occur.

Further, the charged neutralizing agent is dissolved in the drain to be in a fluidized state and is discharged together with the above-mentioned fixed amount of drain. At the time of the next neutralization, a new neutralizing agent is charged.
At the time of the next neutralization, the amount of the neutralizing agent that reacts with the above-mentioned fixed amount of drain is not too large or too small. Also in this respect, the reaction between the drain and the neutralizing agent becomes moderate. The neutralizing agent may be one that is completely soluble in the drain or one that is partially insoluble, as long as the neutralizing agent is in a fluid state that is dissolved in the drain and discharged together with the drain. The neutralizing agent may be in the form of powder or liquid, in addition to solid.

The detecting means may have a mechanical structure or an electric structure, or may be a combination thereof. The same applies to the charging means.

[0012]

According to the present invention, as described above, even if the amount of drain generated is small and the storage time of the drain in the drain tank is long, the drain does not excessively react with the neutralizing agent, and If the amount is too large, insufficient neutralization of the drain does not occur, so that the drain neutralization performance is stabilized. In addition, during the above-mentioned neutralization, the amount of the neutralizing agent that reacts with the fixed amount of drain does not become too large or too small, and the reaction between the drain and the neutralizing agent becomes moderate. However, the drain neutralization performance is stabilized.

Furthermore, since the neutralizing agent is charged into the drain tank in an amount suitable for a certain amount of drain, the number of times of neutralization is increased as in the conventional case in which the neutralizing agent is previously arranged in the drain tank. As a result, there is no inconvenience that the neutralization performance decreases. Further, since a new neutralizing agent is charged into the drain tank each time it is used, impurities and the like adhere to the surface of the neutralizing agent with the passage of time as in the above-described conventional one, so that the neutralizing performance is reduced. No inconvenience occurs.

[Others] [A] Another solution of the present invention taken to solve the above-mentioned problem is that “a drain tank for storing drain generated by condensation of water vapor in combustion exhaust gas is provided. A drain neutralization device that neutralizes the drain in the drain tank with a neutralizing agent and discharges a certain amount of drain from the drain tank every time the amount of stored drain reaches a predetermined amount. Detecting means for detecting a predetermined time between the time when the discharging operation is completed and before the start of the next discharging operation; and in response to an output of the detecting means, an amount suitable for neutralizing the certain amount of drain. Charging means for charging a neutralizing agent which is dissolved in the drain to be in a fluid state to be discharged together with the drain at the time of the next discharging operation, into the drain tank.

In this case, at a predetermined time between the completion of the discharging operation and the start of the next discharging operation,
Since a certain amount of neutralizing agent suitable for neutralizing the above-mentioned certain amount of drain is charged into the drain tank, the certain amount of drain is discharged from the drain tank in the next discharging operation in a neutralized state. In this method, for the certain amount of drain in the drain tank,
Since the neutralizing agent reacts in an amount suitable for the neutralization, the drain does not excessively react with the neutralizing agent even if the amount of generated drain is small and the storage time of the drain in the drain tank is prolonged. Conversely, even if the amount of generated drain is large, insufficient neutralization of drain does not occur. Therefore, the drain neutralization performance is stabilized.

Further, the charged neutralizing agent is dissolved in the drain to be in a fluid state and is discharged together with the above-mentioned fixed amount of drain. At the next neutralization, a new neutralizing agent is charged.
At the time of the next neutralization, the amount of the neutralizing agent that reacts with the above-mentioned fixed amount of drain is not too large or too small. Therefore, also in this respect, the reaction between the drain and the neutralizing agent becomes appropriate, and the drain neutralizing performance is improved.

Further, since the neutralizing agent is charged into the drain tank in an amount suitable for a certain amount of drain, the number of times of neutralization is increased as in the conventional case in which the neutralizing agent is previously disposed in the drain tank. As a result, there is no inconvenience that the neutralization performance is reduced. Further, since a new neutralizing agent is charged into the drain tank each time it is used, impurities and the like adhere to the surface of the neutralizing agent with the passage of time as in the above-described conventional one, so that the neutralizing performance is reduced. No inconvenience occurs.

The neutralizing agent may be either completely soluble in the drain or partially insoluble in the drain, as long as the neutralizing agent is dissolved in the drain and becomes a fluid state discharged together with the drain. The neutralizing agent may be in the form of powder or liquid, in addition to solid. In addition, as long as the detection means for determining the injection timing of the neutralizing agent is to detect a predetermined time between the completion of the discharging operation and the start of the next discharging operation, for example, a drain is used. It may be configured to detect that the storage amount of the drain in the tank has become a set amount smaller than the predetermined amount. Further, the detection means may have a mechanical configuration or an electrical configuration, or may be a combination thereof. The same applies to the charging means.

[B] In the above invention or item a,
In the "the neutralizing agent is formed into a solid and foams in the drain", although the neutralizing agent is a solid,
By foaming in the drain, it melts quickly and becomes the above-mentioned fluid state. In this one, since the neutralizing agent is solid,
It is easy to handle such as separation and loading.

[C] In the invention described in the above item a or b, “provided with a stirring means for stirring the drain in the drain tank during the neutralization reaction after the charging”, And the neutralizing agent are mixed, and the neutralizing agent quickly dissolves in the drain to enter the above-mentioned fluidized state. [Item d] In the above invention, any of items a to c,
`` The detecting means includes a water level detecting means for detecting a water level of the drain in the drain tank '', wherein when the water level of the drain in the drain tank reaches a predetermined water level lower than the maximum water level, the neutralizing agent A predetermined time for feeding is detected.

In this case, since the change in the water level is used to detect the predetermined time, the detection of the predetermined time is reliable and easy. [Item e] In the above invention, any of items a to d,
"The charging means is a container which previously stores the neutralizing agent,
A separating and charging mechanism for separating a certain amount of the neutralizing agent from the neutralizing agent in the container in response to the output of the detection means and charging the neutralizing agent into the drain tank. Is stored in advance, but at the above-mentioned predetermined time, a certain amount of the neutralizing agent is separated from the neutralizing agent in the container by the separating / injecting mechanism and is injected into the drain tank.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. [Embodiment 1] FIG. 1 is a diagram showing an initial state of a drain neutralizing device (100) in a drain storage according to Embodiment 1 of the present invention, and FIG. 2 is a diagram showing a drain neutralizing device (100). FIG. 3 is a view showing the start of draining of the drain neutralizer (100), and FIG. 4 is a view showing the start of draining of the drain neutralizer (100). FIG.

As shown in FIG. 1, the drain neutralizer (100) is mounted on a water heater (7) in which drain is generated by absorbing latent heat from combustion exhaust gas. ), A drain tank (1) provided at the tip of a drain pipe (13) for guiding the drain from the water heater (7), and a neutralizing agent (8) is charged into the drain tank (1) at a predetermined timing. And an input device (2).

As shown in FIG. 1, the water heater (7) includes a burner (73) for generating combustion exhaust gas, a main heat exchanger (71) for absorbing sensible heat from the combustion exhaust gas, and A sub-heat exchanger (72) that further absorbs latent heat from the combustion exhaust gas is housed in a can (70). In this water heater (7), due to the latent heat absorption, drain adheres to the surface of the sub heat exchanger (72), and the drain drops and is connected to the drain pipe (13) connected to the bottom of the can body (70). ).

[Regarding the Configuration of Each Part of the Drain Neutralization Device (100)] * Drain tank (1) * The drain tank (1) is a rectangular parallelepiped container, and as shown in FIG. ) Is inserted into the storage chamber (1a) from above, and a discharge pipe (12) located on the side of the storage chamber (1a).
And a siphon chamber (1b) inserted from below. The siphon chamber (1b) and the discharge pipe (12) function as a siphon for drain discharge as described later.

The storage chamber (1a) and the siphon chamber (1b) communicate with each other through an opening (15a) formed below the boundary wall (15) between the storage chamber (1a) and the siphon chamber (1b). Storage room (1a)
Is drained into the storage chamber (1a) and the siphon chamber (1b). Then, with the inflow of the drain, the drain tank (1) (the storage chamber (1a) and the siphon chamber (1)
The water level of the drain stored in b)) rises.

The discharge pipe (12) extends upward in the siphon chamber (1b), and the upper end of the discharge pipe (12) is in contact with the constituent wall (16) at the upper end of the siphon chamber (1b). A gap (H) (for example, 5 mm) is provided between them. And drain tank
(1) Even if the water level of the drain inside rises above the upper end of the discharge pipe (12) (for example, 6 mm in diameter), the drain blocks the discharge pipe (12) due to surface tension, and the water level further rises to a predetermined level ( When the water reaches the maximum water level, the drain blocking the discharge pipe (12) flows into the discharge pipe (12). The above-mentioned gap (H) is such that air pools are not formed below the component wall (16) when the water level rises, taking into account the diameter of the discharge pipe (12), the surface tension of the drain, and the speed at which the water level of the drain rises. Is set to In this case, the highest water level is a water level that coincides with the constituent wall (16) as shown in FIG.

In this apparatus, when the drain flows into the discharge pipe (12), the drain is discharged from the siphon chamber (1b), and the drain is sucked from the storage chamber (1a) into the siphon chamber (1b). The water level of the drain in the chamber (1a) drops. Then, when the water level becomes lower than the lower end of the boundary wall (15) and air enters the siphon chamber (1b) through the air holes (K) and the opening (15a) of the storage chamber (1a). In the siphon room (1
Drain discharge from b) is completed, and the water level of the drain in the drain tank (1) becomes the minimum water level as shown in Fig.4. That is, a certain amount of drain is discharged from the lowest level to the highest level.

In the drain tank (1), the storage and discharge of the fixed amount of drain are alternately repeated as described above. * Neutralizing agent (8) and charging device (2) * In this device, a solid neutralizing agent (8) is used to neutralize the drain stored in the drain tank (1). The wetting agent (8) is a sphere and is composed of components that are much more soluble in the drain than conventional ones. In addition, the neutralizing agent (8) contains a component (foaming agent) that generates air bubbles upon contact with the drain. In this drain neutralizer (100),
A number of neutralizing agents (8) of the same diameter and weight are used.

As shown in FIG. 1, the charging device (2) comprises a container (2a) containing the above-mentioned neutralizing agent (8) group in advance,
And a separating and charging mechanism (2b) for separating and charging the neutralizing agent (8) in (2a) one by one into the drain tank (1). The container (2a) has a configuration in which an outlet portion (21) for a neutralizing agent (8) is formed at one end thereof, and the container (2a) is in a downward position in which the outlet portion (21) is opened downward. used.

The separating and charging mechanism (2b) guides the hollow body (23) connected to the upper end of the drain tank (1) and the neutralizing agent (8) to the body (23). And a passage portion (22). The passage part (22) is open upward, and the open end thereof has an outlet part (21) of the container (2a) in the downward posture.
Are detachably connected. And this passage part (22)
The passage portion (22) is formed in such a size that the neutralizing agent (8) supplied from the container (2a) is aligned in a line downward.
An opening (2) through which the neutralizing agent (8) in the passage (22) is inserted one by one into the main body (23) side at the boundary between the lower end of the main body and the main body (23).
4) is formed.

A wall (27) extending in the vertical direction is formed in the main body (23) so as to face the opening (24). The opening (27) in the wall (27) and the main body (23) is formed. 24) between the surrounding configuration wall,
A take-out member (25) for holding the neutralizing agent (8), which is slidably held in the vertical direction by these components, is provided. The wall (27) and the take-out member (25) are
Is configured such that only one neutralizing agent (8) is placed on the take-out member (25) from the opening (24) when it contacts the lower end of the main body (23). Then, the take-out member (25) raises the neutralizing agent (8) to above the wall (27) and raises the opening (2).
4) is configured to close. Also, take-out member (25)
Has a locking piece (25a) that engages with the lower end of the wall (27) so that when the neutralizer (8) is lifted above the wall (27), it is prevented from further rising. Configuration.

Further, the upper end surface of the take-out member (25) is
The neutralizing agent (8) lifted above the wall (27) by the take-out member (25) is inclined toward the opposite side of the wall (27). And falls into the space on the opposite side. At the boundary between the main body (23) and the drain tank (1),
A hole (14) for passing the neutralizing agent (8) is formed. Therefore, the neutralizing agent (8) dropped from the removal member (25)
It is thrown into the storage chamber (1a) through the hole (14).

A rod (2) extending downward from the take-out member (25) and entering the storage chamber (1a) is attached to the separation / injection mechanism (2b).
6), and a storage chamber is provided at the lower end of the rod (26).
The float (3) floating on the drain in (1a) is integrated. Accordingly, the float (3) rises and falls with a change in the predetermined range of the water level of the drain in the storage chamber (1a), whereby the discharge member (25) rises and falls as described above.

[Use of drain neutralizer (100)]
In the drain neutralizer (100), as described above, the drain flowing from the drain pipe (13) into the storage chamber (1a) is as shown in FIG.
As shown in (1), the water is stored in the drain tank (1) (the storage chamber (1a) and the siphon chamber (1b)), and the water level of the drain in the drain tank (1) rises with the inflow of the drain.

In this case, the drain is in contact with the float (3) during the rise of the water level, so that the float (3) floats on the drain. Therefore, with the subsequent rise in water level, the float (3)
(25) rises, and as a result, one neutralizer (8) placed on the extraction member (25) moves upward, and at the same time, the extraction member
The opening (24) is closed at (25).

Due to this rise, as shown in FIG. 2, when the water level of the drain in the drain tank (1) reaches a set water level slightly lower than the maximum water level, the neutralizing agent ( 8)
Is set to get over the wall (27). Therefore, when the drain water level reaches the set water level, the charging device (2)
, One neutralizing agent (8) is introduced into the storage chamber (1a). Then, the neutralizing agent (8) charged into the storage chamber (1a) melts while foaming in the drain and undergoes a neutralization reaction with the drain. At this time,
The neutralizing agent (8) has a foaming agent which reacts with the drain to form a foam, so that a large number of pores are formed, the contact area with the drain increases, and the neutralizing agent (8) is easily collapsed in the drain. Dissolves quickly and completely in the drain. As a result, a fluid state is discharged together with the drain at the time of drain discharge described later. The amount of each neutralizing agent (8) is set to an amount suitable for neutralizing a certain amount of drain from the lowest level to the highest level in the drain tank (1).

Thereafter, as shown in FIG. 3, the drain tank (1)
At this time, the neutralizing agent (8) is completely dissolved in the drain, and the pH value of the certain amount of drain falls within a reference range (for example, pH 5.8).
8.6). When the water level reaches the maximum water level, the above-described siphon operation is started. Then, as shown in FIG. 4, when the water level of the drain becomes the lowest water level, the drain discharge ends.

While the water level of the drain is from the set water level to the maximum water level, as shown in FIG.
5a) is engaged with the lower end of the wall (27) in a state where
The float (3) is submerged in the drain. At the time of drain discharge, the float (3)
And the takeout member (25) also descends and returns to its initial position.

In this apparatus, the storage time in one storage in the drain tank (1) changes according to the change in the drain generation speed. The amount of the neutralizing agent (8) which reacts with the water is an amount suitable for neutralizing the above-mentioned fixed amount of drain at any time of storage. Therefore, even if the drain generation rate is low and the storage time of the drain in the drain tank (1) is long, the drain does not excessively react with the neutralizing agent (8). Also, insufficient neutralization of drain does not occur. Therefore, this drain neutralizer (100)
Then, the drain neutralization performance is stabilized.

The neutralizing agent (8) charged is dissolved in the drain to be in a fluid state and discharged from the drain tank (1) together with the above-mentioned fixed amount of drain. Japanese medicine
Since (8) is charged, the amount of the neutralizing agent (8) that reacts with the above-mentioned predetermined amount of drain in the next neutralization is not too large or too small. Therefore, also in this point, the reaction between the drain and the neutralizing agent becomes appropriate, and the drain neutralizing performance is stabilized.

In this case, the neutralizing agent (8) is charged into the drain tank (1) in an amount suitable for the above-mentioned fixed amount of drain.
There is no inconvenience such that the neutralization performance is reduced as the number of times of neutralization is increased unlike the conventional one in which a neutralizing agent is previously arranged in the drain tank (1). Also, since a new neutralizing agent (8) is charged into the drain tank (1) each time it is used, impurities and the like adhere to the surface of the neutralizing agent over time as in the above-described conventional one. There is no inconvenience such as a reduction in sum performance.

In this case, the neutralizing agent (8) is solid but foams in the drain, so that it is easily melted quickly. Further, since the neutralizing agent (8) is solid, handling such as separation and charging is easy. In addition, a container (2
Since a) is detachable from the separation / injection mechanism (2b), if a plurality of these neutralizing agents (8) and the container (2a) are prepared in advance as one unit, only replacement of this unit is required. Can be used to replenish the neutralizing agent (8), and this replenishment becomes easy.

Further, in this apparatus, the predetermined time for charging the neutralizing agent (8) between the time when the discharging operation of the discharging mechanism is completed and the time before the next discharging operation is started is determined in the drain tank (1). Since the detection is performed using the change in the water level of the drain, the detection at the predetermined time is reliable and easy. In the first embodiment,
As the detection of the predetermined time, the fact that the water level in the drain tank (1) has reached the predetermined water level is detected by a mechanical configuration such as a float (3), but this is detected by an electrical configuration. Is also good. In the first embodiment, the neutralizing agent is used.
As a means for charging (8) into the drain tank (1), a mechanical configuration is used, but an electrical configuration may be used in combination. [Embodiment 2] FIG. 5 is a view showing a drain neutralizing device (100a) according to Embodiment 2 of the present invention when a neutralizing agent is charged, and FIG. 6 is a diagram showing the drain neutralizing device of FIG. It is a perspective view of the disk (41) of (100a).

In the second embodiment, as shown in FIG. 5, a water level sensor (51) is mounted at a position corresponding to the set water level on the constituent wall of the storage chamber (1a). (51) is electrically connected to the control circuit (6).
As the neutralizing agent (8), the same one as in the first embodiment is used, and a charging device (4) for charging the neutralizing agent (8) into the drain tank (1) includes: A container (4a) similar to the above-described container (2a), and a separation charging mechanism (4b) equipped with the container (4a).
And are provided.

The separating and charging mechanism (4b) includes a thick disk (41) in a horizontal position accommodated in a casing (40), and this disk (41).
And a motor (42) for rotationally driving the motor. Disk
(41) has a pair of holes capable of accommodating the neutralizing agent (8) one by one.
(411) are formed in the vertical direction, and these holes (4
11) are arranged on the diameter line in plan view as shown in FIG.

Further, the casing (40) is configured to be substantially in contact with the entire upper and lower surfaces of the disk (41).
At one of the positions corresponding to each of the holes (411) in (40), an inlet (401) into which the neutralizing agent (8) from the container (4a) enters.
On the other hand, an outlet (402) for allowing the neutralizing agent (8) to escape to the storage chamber (1a) is formed. Furthermore, the motor
(42) is electrically connected to the control circuit (6).

The control circuit (6) has a water level sensor for detecting that the water level of the drain in the drain tank (1) has risen and has reached the set water level.
A determination function unit for determining based on the output signal of (51), and a control function unit for controlling the motor (42) so that the disk (41) rotates 180 ° in response to the determination. I have. In this case, one neutralizer (8) is stored in the hole (411) on the inlet (401) side, and the water level of the drain in the drain tank (1) rises and reaches the set water level. Then, the disk (41) is 180 °
After rotation, the hole (411) on the inlet (401) side is
According to (402), the neutralizing agent (8) is charged into the storage chamber (1a). At the same time, the hole (411) on the outlet (402) side coincides with the inlet (401), and a new neutralizing agent (8) is stored in the hole (411). .

This embodiment has the same functions and effects as the first embodiment. [Other embodiments]. In the first and second embodiments, the foaming agent is contained in the neutralizing agent (8) so as to be dissolved quickly in the drain. However, the drain in the storage chamber (1a) is stirred by using a means for stirring the drain. It is good also as a structure which makes it easy to melt | dissolve neutralizer of this. As this means, for example, a rotary blade disposed in the storage chamber (1a) may be used, or the drain in the storage chamber (1a) may be vibrated. In this case, since the drain and the neutralizing agent are mixed by stirring, the neutralizing agent quickly dissolves in the drain and enters the above-mentioned fluidized state. Further, these two configurations may be used in combination.

[0050] In the first and second embodiments, the neutralizing agent (8) that is completely soluble in the drain is used. However, as long as the neutralizing agent (8) can be dissolved to be in the above-mentioned fluidized state, a part thereof may be insoluble. In addition, as the neutralizing agent, in addition to the spheres described above,
For example, it may be a rectangular parallelepiped or a flat plate. Further, in addition to solid, powder or liquid may be used. In the case of a powder, those described above with reference to FIGS. 1 and 5 may be used as they are.

[0051] In the above first and second embodiments, the neutralization agent (8) is charged into the drain tank (1) by detecting that the water level has reached the set water level higher than the minimum water level. It is detected that the water level is the lowest, that is, the storage amount of the certain amount of drain in the drain layer (1) is “0”,
A neutralizing agent (8) may be added. In this case, for example, a configuration can be adopted in which a water flow switch is provided in the discharge pipe (12) to detect that the drain discharge by the siphon has been completed.

[0052] In the first and second embodiments, a siphon is used as a means for discharging the drain from the drain tank (1), but the drain is drained from the drain tank when the amount of stored drain reaches the predetermined amount. Other configurations can be adopted as long as. For example, a ball tap or a solenoid valve may be used.

[Brief description of the drawings]

FIG. 1 is a diagram showing an initial state of a drain neutralization device (100) during drain storage according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a drain neutralizer (100) when a neutralizing agent is charged.

FIG. 3 is a view showing a state when the drain neutralization device (100) starts draining.

FIG. 4 is a diagram showing the drain neutralization device (100) at the end of drain discharge.

FIG. 5 is a diagram showing a drain neutralizing device (100a) according to Embodiment 2 of the present invention when a neutralizing agent is charged.

FIG. 6 is a perspective view of a disk (41) of the drain neutralizing device (100a) of FIG.

FIG. 7 is a diagram showing an outline of a configuration of a conventional drain neutralization device.

[Explanation of symbols]

 (100) ・ ・ ・ Drain neutralizer (8) ・ ・ ・ Neutralizer (1) ・ ・ ・ Drain tank (2) ・ ・ ・ Charging device (3) ・ ・ ・ Float (26) ・ ・ ・ Rod (25) ・ ・ ・ Extraction member (27) ・ ・ ・ Wall

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI C02F 1/66 530 C02F 1/66 530B 530K 530Q (72) Inventor Adult Katagiri No. 2-26 Fukuzumicho, Nakagawa-ku, Nagoya Rinnai Corporation (72) Inventor Shimozono Kyushu Otani 5-42-4, Uraga-cho, Yokosuka-shi, Kanagawa-ken (72) Inventor Daisuke Osumi 38-37, Shirahata-kami-cho, Kanagawa-ku, Yokohama-shi, Kanagawa-ken Tokyo Gas Hakuraku Apartment 102

Claims (6)

[Claims] 1. A drain tank in which a drain generated by condensation of water vapor in combustion exhaust is stored, wherein the drain in the drain tank is neutralized with a neutralizing agent, and the storage amount of the drain is reduced. When a predetermined amount is reached, a certain amount of drain is discharged from the drain tank, and the storage and discharge of the certain amount of drain is performed by one.
A drain neutralization device that alternately repeats as a cycle, comprising: a detecting means for detecting the one cycle; and a neutralizing agent in an amount suitable for neutralizing the fixed amount of drain in response to an output of the detecting means. Charging means for charging a neutralizing agent which is dissolved in the drain and becomes a fluid state to be discharged together with the drain at the time of discharging into the drain tank. 2. A drain tank in which drain generated by condensation of water vapor in combustion exhaust is stored. The drain in the drain tank is neutralized with a neutralizing agent, and the amount of stored drain is reduced. A drain neutralizing device that discharges a predetermined amount of drain from the drain tank every time a predetermined amount is reached, and detects a predetermined time between the completion of the discharging operation and the start of the next discharging operation. Detecting means, in response to the output of the detecting means, a neutralizing agent in an amount suitable for neutralizing the fixed amount of drain, which melts in the drain and is discharged together with the drain during the next discharging operation A charging means for charging a neutralizing agent to be in a state into the drain tank. 3. The drain neutralizer according to claim 1, wherein the neutralizer is formed as a solid and foams in the drain. 4. A stirring means for stirring the drain in the drain tank during the neutralization reaction after the charging.
The drain neutralizer according to any one of the above. 5. The water level detecting means for detecting a water level of a drain in the drain tank.
The drain neutralizer according to any one of the above. 6. The charging means includes: a container for preliminarily containing the neutralizing agent; and a drainer for separating a predetermined amount of the neutralizing agent from the neutralizing agent in the container in response to an output of the detector. The drain neutralization device according to any one of claims 1 to 5, further comprising a separation charging mechanism for charging the tank.