JPH0926292A - Neutralizer exchange or replenishment timing detection device in heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply inform a user of the timing of exchange or replenishment of a neutralizer by providing a storage chamber and a siphon in a drain container and further providing detection means and reporting means of the storage amount. SOLUTION: A drain container 2 is provided on a drain discharge passage from a heat exchanging apparatus A for containing a neutralizer for neutralizing drain. The drain container 2 includes therein a drain inflow chamber 23 into which a drain discharge pipe 12 is inserted from an upper portion, a storage chamber 21 communicating at the upper end thereof with the drain inflow chamber for storing drain, and a siphon 22 for discharging drain. A water level switch S1 is provided in the storage chamber 21 which switch is disposed at the height lower than a top plate 25a of a vacancy chamber 25 for detecting a stored water level when drain discharge operation by the siphon 22 is started. The number of outputs of the detection signal is accumulated, and when it reaches a set value, an alarming signal is outputted from a controller C to light an LEDL1 . Hereby, exchanging timing of the neutralizer is displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a neutralizing agent exchange or replenishment timing detection device for a heat exchange device.

[0002]

2. Description of the Related Art In recent heat exchangers (A), as shown in FIG. 1, in order to improve heat exchange efficiency, the heat exchanger (1) is used until the combustion exhaust gas from the burner (B) falls below the dew point. ), A so-called condensing type of heat absorption is realized. This condensing type heat exchanger (A)
In this case, dew condensation water (drain) is positively generated in the water flow pipes and fins of the heat exchanger (1), and the amount of this drain is large. A drain discharge path is provided for discharging the drain. And
Since the drain contains acidic corrosive components such as nitrogen oxides generated by combustion of the burner (B), in order to remove these corrosive components, the drain is neutralized in the drain discharge route. Drain container containing a neutralizing agent for operation (2)
Is provided. In this case, the corrosive components are neutralized by the neutralizing agent when the drain passes through the drain container (2). Since the neutralizing agent must be exchanged or replenished at the time when the neutralizing effect disappears, a device for detecting this time is provided.

Conventionally, as this detection device, an actual exploitation method has been adopted.
There is one disclosed in No. 1-127354. As shown in FIG. 1, this conventional detection device has a reagent container (K) that is branched and connected to a downstream portion of the drain container (2) in the drain discharge path and contains a reagent for acidity check. Is. In this case, when the valve (V) provided at the connection end of the reagent container (K) is opened, the reagent is drained (2).
Since it mixes with the drain of the drain discharge route that has passed through,
The presence or absence of discoloration due to the reaction between the reagent and the drain can be confirmed through a window (W) provided in the branch connection part. From this, it is possible to determine whether the drain that has passed through the drain container (2) contains an acidic component, that is, whether the neutralizing effect of the above-mentioned neutralizing agent continues, and it is possible to replace or replenish the neutralizing agent. You can know the time.

[0004]

However, in this conventional technique, it is necessary to frequently carry out the checking work in order to know the replacement or replenishment time of the neutralizing agent, and each time the checking work is carried out. Since it is necessary to open and close the valve (V), the work for knowing the replacement or replenishment time was troublesome.

It is an object of the inventions of claims 1 to 3 to provide a neutralizing agent exchange or replenishment time detection device for a heat exchange device, which can easily know the time of exchange or replenishment of the neutralizing agent. To do.

[0006]

[Means for Solving the Problems]

[Invention of Claim 1] According to the invention of Claim 1, "a heat exchange device is provided with a heat exchanger (1) which is adapted to generate heat by exchanging heat until the combustion exhaust gas of the burner falls below the dew point.
A drain container (2) containing a neutralizing agent for neutralizing the drain is provided in the drain discharge route of (A).
A storage chamber (21) for storing the drain and a siphon (22) for discharging a certain amount of the drain when the drain in the storage chamber (21) reaches a predetermined storage amount are provided in (2). A detection means for outputting a detection signal when the predetermined storage amount is reached
(S) and a counter that accumulates the number of times the detection signal is output
(K) and a comparator (M) that outputs a notification signal when the cumulative number of this counter (K) reaches the set number, and the notification signal turns on to sound or display the replacement or replenishment of the neutralizing agent. And an informing means (L) for informing.

The drain generated in the heat exchanger (1) when the heat exchanger (A) is in an operating state is stored in the storage chamber (2) of the drain container (2).
It flows into 1) and is stored. Then, when the drain in the storage chamber (21) reaches a predetermined storage amount, a certain amount is discharged by the siphon (22), and thereafter, the drain storage in the storage chamber (21) and the storage chamber ( Drain discharge from 21) is repeated. Also, the drain that passes through this drain container (2) is
It is neutralized by the neutralizing agent in the drain container (2).

Each time the drain in the storage chamber (21) reaches the predetermined storage amount, a detection signal is output from the detection means (S), and the output frequency is accumulated in the counter (K). . Then, when the cumulative number reaches the set number, the notification means (L) is turned on by the notification signal output from the comparator (M), and the replacement or replenishment of the neutralizing agent is notified by sounding or displaying.

In this case, since the total amount of drain passing through the drain container (2), that is, the degree of use of the neutralizing agent due to this, can be determined by the cumulative number of times, it is possible to determine the neutralizing agent by the cumulative number of times. Know when to replace or replenish. [Invention of Claim 2] The invention of Claim 2 is that "a heat exchange device is provided with a heat exchanger (1) which is configured to generate heat by exchanging heat until the combustion exhaust gas of the burner falls below the dew point.
A drain container (2) containing a neutralizing agent for neutralizing the drain is provided in the drain discharge route of (A), and the heat exchange device is provided.
A timer (T) for measuring the heat exchange time of the heat exchanger (1) for each operation of (A), an accumulating means (R) for accumulating the measuring time of the timer (T), and an accumulating means ( Comparator (M) that outputs a notification signal when the cumulative time of (R) reaches the set time
And a notification means (L) which is turned on by the notification signal to notify the replacement or replenishment of the neutralizing agent by sounding or displaying ”.

In this device, the heat exchange time of the heat exchanger (1) is measured by the timer (T) for each operation of the heat exchanger (A), and this measurement time is accumulated by the accumulating means (R). To be done. Then, when this accumulated time reaches the set time, a notification signal is output from the comparator (M), the notification means (L) is turned on by this notification signal, and the neutralizing agent exchange or replenishment is sounded or displayed. Will be notified by. In this case, since the drain generation amount, that is, the degree of use of the neutralizing agent can be determined by the operating time, the replacement or replenishment time of the neutralizing agent can be appropriately determined by determining the operating time. [Invention of Claim 3] The invention of Claim 3 is that "a heat exchange device is provided with a heat exchanger (1) configured to exchange heat until combustion exhaust gas of a burner falls below a dew point to generate drainage.
A drain container (2) containing a neutralizing agent for neutralizing the drain is provided in the drain discharge route of (A), and the heat exchange device is provided.
(A) Gas amount measuring means (G) for measuring the gas supply amount to the burner and outputting the measured value, accumulating means (R) for accumulating the measured value, and accumulating of the accumulating means (R) A comparator (M) that outputs a notification signal when the value reaches the set value and a notification means (L) that is turned on by the notification signal and notifies the replacement or replenishment of the neutralizing agent by sounding or displaying ] Is characterized.

In this device, the gas supply amount to the burner of the heat exchange device (A) is measured by the gas amount measuring means (G),
The measurement value output from now on is accumulated by the accumulating means (R). When the accumulated value reaches the set value, the comparator
A notification signal is output from (M), and the notification means (L) is turned on by this notification signal to notify the replacement or replenishment of the neutralizing agent by sounding or displaying. In this case, the amount of heat generated by the burner and the amount of drain generated are determined by the gas supply amount, and the degree of use of the neutralizing agent is known. Recognize.

[0012]

As described above, according to each of the first to third aspects of the present invention, the operation for knowing the time of exchanging or replenishing the neutralizing agent is unnecessary, and the neutralizing agent reaches the limit of use. Then, since it is automatically notified, the time for the replacement or the replenishment can be easily known. Further, in any of the above-mentioned inventions, since the inspection reagent as in the above-mentioned conventional technique is not used, maintenance such as replacement and replenishment of the inspection reagent is unnecessary, which is also simple in this respect.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] In the first embodiment, as shown in FIG.
This was carried out in a hot water heating system in which a hot water circulation path was configured between a so-called condensing type heat exchange device (A) and a heat dissipation device (U) for heating, and the drain from the heat exchange device (A) was used. A drain container (2) containing a neutralizing agent for neutralizing the drain is provided in the discharge route. A cistern (3) for maintaining a predetermined amount of water is provided in the hot water circulation path.

[Regarding the Configuration of Each Part] ** Heat Exchanger (A) ** The above heat exchanger (A) is located in the can body (10), the burner (B), and the combustion exhaust gas mainly located below the burner (B). A main heat exchanger (1a) that absorbs and exchanges heat with the sensible heat of, and a sub-heat exchanger (1b) that mainly absorbs and exchanges heat with the latent heat of combustion exhaust, and the can body (10 ) From the fan (F) connected to the upper end of the burner (B)
Combustion air is supplied to the burner (B) to generate heat from the combustion exhaust.
Heat is exchanged with water in a water pipe penetrating them through a large number of fins of the main and auxiliary heat exchangers (1a) and (1b), and the combustion exhaust gas is transferred to one of the lower ends of the can body (10). Exhaust path (1
It is configured to exhaust from 1). The sub heat exchanger (1b) is located below the main heat exchanger (1a), and the main heat exchanger is
It is connected in series on the downstream side of the exhaust gas of (1a). Further, as the burner (B), an all primary air type is used.

Further, the bottom of the can body (10) is a funnel (13) for collecting the drain dropped from the heat exchanger, and the drain discharge pipe (12) connected to the lower end of the funnel (13). Is inserted in the drain container (2) described later. ** Drain container (2) ** Inside the drain container (2), the drain discharge chamber (23) is inserted from above, and the drain inlet chamber (23) has its upper end. A storage chamber (21) communicating with the storage chamber (21) for storing the drain and a siphon (22) for discharging the drain from the storage chamber (21) are arranged in parallel. The siphon (22) has a vertically long empty chamber (25) that communicates with the storage chamber (21) at its lower end, and penetrates the bottom plate of the empty chamber (25) to face upward. The central pipe (26) is inserted between the upper end of the central pipe (26) and the top plate (25a) of the vacant chamber (25), and the diameter of the central pipe (26) and the surface of the drain. A gap (for example, 5 mm) is formed to the extent that an air pocket is not generated in consideration of the tension and the speed of the drain water level rise. or,
In the storage chamber (21), for neutralizing drainage, for example,
A neutralizing agent (21a) consisting of particles of magnesium oxide and calcium carbonate is stored, and the top plate of this storage chamber (21) is
A lid plate that is set higher than the top plate (25a) of the empty chamber (25) and that is opened and closed when the neutralizing agent is replaced or replenished.
(27) is provided. The cover plate (27) is provided with a through hole (24) for opening to the atmosphere. Furthermore, the central pipe (26)
Are extended downwardly and are joined together in the middle of an overflow pipe (31) of a cistern (3) described later.

In the storage chamber (21), the empty chamber is
It is placed below the top plate (25a) of the (25) and the siphon (2
The first water level switch (S ₁ ) for detecting the stored water level when the drain discharge operation described later by 2) is started, and the vacant chamber
A second water level switch (S ₂ ) is installed at a position higher than the top plate (25a) of (25) to detect an abnormal water level when a water leak occurs in the water pipe (10a) of the heat exchange device (A). ing. Further, on the bottom plate of the drain container (2), there is a temperature sensor (S ₃ ) for detecting the temperature of the drain container (2) and a heater (H) for heating the inside of the drain container (2). It is attached. The first and second water level switches (S ₁ ) (S ₂ ) and temperature sensor (S ₃ )
The heater (H) is connected to the control device (C) described later.

** Sisturn (3) and heat dissipation device (U) ** Said systurn (3) is provided in the return path from the heat dissipation device (U) to the heat exchange device (A) in the hot water circulation path. A circulation pump (P) is installed on the downstream side of (3). And in the body of this cistern (3),
If the overflow pipe (31) and the water supply pipe (32) of an automatic water supply device (not shown) such as a ball tap are connected and the stored water level in this systern (3) becomes significantly higher than the set water level, the overflow will occur. When the surplus water is drained from the pipe (31) and the stored water level becomes low, water is supplied from the water supply pipe (32). Due to the water amount maintaining function in this cistern (3), the circulating water amount in the hot water circulation path is maintained constant.
Further, the central pipe (26) is provided in the middle of the overflow pipe (31).
The downstream end of is connected.

Further, in this embodiment, the heat dissipation device described above is used.
As (U), an air blower or a floor heating device configured to blow hot air for heating to the heat exchanger for heat radiation connected to the hot water circulation path is adopted. ** Control device (C) ** This hot water heating system is designed so that its operation is controlled by a control device (C) incorporating a microcomputer. A neutralizing agent replacement time detection function unit for detecting the replacement time is provided. The neutralizing agent replacement timing detection function unit is specifically realized by a neutralizing agent replacement timing detection routine (J ₁ ) which will be described later and is stored in the microcomputer. The microcomputer includes a water leak detection routine (J ₂ ) for monitoring the water leak of the heat exchanger, and a drain container (2).
Freezing prevention routine (J ₃ ) to prevent the freezing of is also stored. Further, the control device (C) is supplied with electricity by turning on the power of the hot water heating system (connecting a power plug).

[Actual Operation] Next, the actual operation of the hot water heating system will be described with reference to the flowcharts of FIGS. 4 and 5. As shown in the flowchart of FIG. 4, when an operation switch (not shown) of the hot water heating system is turned on (step (52)), the hot water heating system is operated (step (53)),
A neutralizer replacement timing detection routine (J ₁ ) and a water leakage detection routine (J ₂ ) described below are executed, and these are sequentially and repeatedly executed until the operation switch is turned off (step
(54)). When the operation switch is turned off, a freezing prevention routine (J ₃ ) described later is executed.

The operation and routines of the hot water heating system will be described in detail below. ** Operation of the hot water heating system ** In this hot water heating system operating condition, the heat exchange device (A)
The fan (F) and burner (B) of the engine are activated, and the combustion exhaust gas supplied downwardly from them drives the main heat exchanger (1
a) is heated, and the main heat exchanger (1a) absorbs sensible heat from the combustion exhaust gas, and then the sub heat exchanger (1b) absorbs latent heat, and then exhausted from the exhaust path (11). It Then, since the circulation pump (P) operates, the hot water heated by the heat exchanger is supplied to the heat dissipation device (U).
The room is heated by heat radiation from (U). Further, the hot water whose temperature has dropped due to the heat radiation is returned to the heat exchanger via the cistern (3) and reheated. The heating is continued by the series of hot water circulation.

In this operating state, since the combustion exhaust gas is cooled below the dew point due to the absorption of latent heat in the sub heat exchanger (1b), a large amount of water flows in the sub pipes and fins of the sub heat exchanger (1b). Drain occurs. This drain is dripped and collected by the funnel part (13) of the can body (10), and the drain discharge pipe (1
It flows into the drain inflow chamber (23) of the drain container (2) via 2). Then, after the drain is filled in the drain inflow chamber (23), it overflows and flows into the storage chamber (21) and is stored therein. Furthermore, the drain fills the vacant chamber (25) of the siphon (22) when the water level reaches a predetermined level in the storage chamber (21), as shown in FIG. At this time, the drain is filled in the gap from the top plate (25a) of the empty chamber (25) to the central pipe (26), and the upper end opening of the central pipe (26) is closed by the surface tension of the drain. Become. After that, the closed state due to the surface tension of the drain breaks and flows into the central pipe (26).
As a result, the drain in the empty chamber (25) and the storage chamber (21) is sucked into the central pipe (26), and the drain container (2)
Emitted from. Then, as shown in FIG. 3B, when the drain in the storage chamber (21) is reduced and air enters the empty chamber (25) through the through hole (24), the central pipe ( 26) The suction negative pressure inside disappears, and the drain discharge ends (state of FIG. 3C). Therefore, in the drain container (2), a fixed amount is discharged by the siphon (22) every time the drain in the storage chamber (21) reaches the predetermined storage amount.

Furthermore, since the downstream end of the central pipe (26) is connected to the middle of the overflow pipe (31) of the cistern (3), the drain discharged from the drain container (2) is It flows from the central pipe (26) to the downstream side of the overflow pipe (31) and flows out to the drain pipe outside the system. In this, the drain container (2) is provided in the drain discharge path.
Is provided, the drain, while being temporarily stored in the storage chamber (21), by the neutralizing agent stored therein,
Acidic corrosive components will be neutralized. Moreover, since the drain discharged from the drain container (2) is diluted by the overflow drainage from the cistern (3), even if a corrosive component remains in the drain, the concentration of the corrosive component is It will decrease.

** Neutralizer replacement timing detection routine (J ₁ ) ** A variable (I) for accumulating the number of outputs of the first water level switch (S ₁ ) for detecting the water level of the drain is stored in the memory. The variable (I) is set to 0 at the time of manufacturing the device. When an electrically erasable / writable memory such as an E ² PROM is used, the variable (I) is stored even when the hot water heating system is powered off.

Now, this neutralizing agent replacement timing detection routine (J
_{In 1} ), as shown in the flowchart of FIG. 5, when the first water level switch (S ₁ ) is turned on by the drain water level when the siphon operation is started (step (61)), the variable
Add 1 to (I) (step (62)). By repeating this, the number of output times of the detection signal output from the first water level switch (S ₁ ) is accumulated. And the variable (I)
Becomes a set value, that is, when the cumulative number reaches the set number, a notification signal is output from the control device (C), and the LED (L ₁ ) is lit by the notification signal, thereby neutralizing It is displayed that it is time to replace the agent (steps (63), (64)). Further, when the reset switch (not shown) is pressed after the neutralizing agent is replaced, the notification signal is extinguished, the LED (L ₁ ) is turned off, and the variable (I) is returned to 0. (Steps (65), (66), (67)). It is also possible to detect the operation of closing the cover plate (27) after the replacement of the neutralizing agent, and thereby turn off the LED (L ₁ ) and return the variable (I) to 0.

In this case, the drainage is determined by the cumulative number.
Total drainage through the vessel (2), ie neutralization by this
Since the degree of use of the agent can be determined,
By making a judgment, the time to replace the neutralizing agent can be properly known.
It will be. The first embodiment is the same as the above-mentioned claim 1.
It corresponds to the invention and carries out step (62) above.
The functional unit in the microcomputer according to claim 1,
Counter (K) of the machine that executes steps (63) and (64) above.
The functional part in the microcomputer is the comparator (M), L above
ED (L₁) Is the notification means (L), the first water level switch (S ₁)
Is the detection means (S). The notification means (L) is the L
ED (L₁) Is not limited to. For example, a buzzer or the like may be used.
In addition, the detection means (S) is something other than the above water level switch, eg
For example, a water pressure gauge that detects the water level in the drain container (2)
Comparison that outputs a signal when the output of a certain level reaches a predetermined level
You may change to the combination of vessels.

** Water Leakage Detection Routine (J ₂ ) ** This water leak detection routine (J ₂ ) is the second water level switch.
The ON signal from (S ₂ ) outputs a water leak signal from the control unit (C), and this water leak signal is used to display the LE for water leak.
The configuration is such that D (L ₂ ) is turned on. In this case, when there is a water leak in the water flow pipe (10a) of the heat exchanger, the drain storage amount in the storage chamber (21) is temporarily changed to the normal siphon operation storage amount (the first water level switch). (S ₁ ) turns on and the storage capacity becomes larger than the storage capacity (S ₁ ) is turned on.
a) Since the water level becomes higher, by detecting the water level at this time by the second water level switch (S ₂ ),
Water leakage of the heat exchanger can be seen.

** Freezing prevention routine (J ₃ ) ** This freezing prevention routine (J ₃ ) turns on the heater (H) when the temperature detected by the temperature sensor (S ₃ ) falls below a predetermined temperature,
Due to this heating, when the detected temperature exceeds a predetermined temperature, the heater (H) is turned off. In this product, the drain container is installed by the heater (H).
Since (2) is maintained within the specified temperature range, freezing of this drain container (2) is prevented and this drain container is
(2) The reaction of the neutralizing agent in the inside is prevented from decreasing. In addition, heat exchanger
The water in the water pipe (10a) and the circulation circuit in (1) is a temperature sensor.
When the temperature detected by (S ₃ ) falls below the specified temperature, the pump
Freezing is prevented by operating (P) and circulating it. [Second Embodiment] In the second embodiment, the control program stored in the microcomputer of the controller (C) of the hot water heating system according to the first embodiment is changed to the flowchart of FIG. The operation will be described below with reference to the flowchart of FIG.

When the operation switch of the hot water heating system is turned on (step (71)), the timer (T) is reset, the time measurement by the timer (T) is started, and the hot water heating system is operated. (Step (7
2), (73)). Then, the sum of the variable (I) (cumulative time) and the measured time (T ₁ ) of the timer (T) is stored as a variable (X), and it is judged whether or not this variable (X) has exceeded the set time. To be done. This operation is continued until the operation switch is turned off (step (77)). Also, the variable
When (X) exceeds the set time, a notification signal is output (steps (74), (75), (76)), and by this notification signal output,
LED (L ₁ ) lights up. In the first embodiment, the variable (I) is the cumulative number, but in the second embodiment, the cumulative time obtained by accumulating the measurement time (T ₁ ) per operation is the variable (I). (Step (79)). Then, a value obtained by adding the measured time (T ₁ ) during the operation to the variable (I) is stored as the variable (X), and this is compared with the set time (step (74), (75)). The functional unit in the microcomputer that executes these steps (74) and (79) serves as the accumulating means (R) described in claim 2.
Further, the functional unit in the microcomputer for executing the steps (75) and (76) is the comparator (M) according to claim 2.
Becomes

In the second embodiment also, the above-mentioned embodiment is used.
Water leak detection routine (J _Two) And antifreeze loop
Chin (J_Three) Is performed and the neutralizer is replaced or replaced after
The turning operation is also the same as in the first embodiment. This one
Then, depending on the operating time, the drain generation amount, that is,
Since the degree of use of the disinfectant can be judged, the operating time is measured.
The time to replace the neutralizer can be properly determined by setting
Becomes Note that the operating time and the amount of drainage are exactly proportional
No, but set assuming that drain will always occur during operation
Delaying the exchange of the neutralizing agent may occur by deciding the time.
And not. [Third Embodiment] The third embodiment is different from the first embodiment.
Neutralizer replacement timing detection routine in control program (J
₁) Is the control program shown in the flowchart of FIG.
It has been changed to.

In the third embodiment, the first embodiment described above is adopted.
Similarly to, the control shown in the flowchart of FIG. 4 is executed. Then, in the neutralizing agent replacement timing detection routine (J ₁ ), measurement per unit time measured by a flow rate sensor (not shown) provided in the gas supply path to the burner (B) of the heat exchange device (A) The value (gas flow rate (G ₁ )) is accumulated (in this embodiment, every 1 second), and the accumulated value is stored as a variable (I) (steps (81), (82)). And the variable
When (I) becomes larger than the set value, a notification signal is output from this control device (C) (steps (83), (84)) and LED (L ₁ )
Lights up. In this configuration, the functional unit in the microcomputer that executes the steps (81) and (82) serves as the accumulating means (R) according to the above-mentioned claim 3, and the step (83),
The functional unit in the microcomputer that executes (84) serves as the comparator (M) described in claim 3. Further, the flow rate sensor serves as a gas amount measuring means (G). The flow rate sensor may be changed to a flow rate counter, and the number of signal outputs from now may be accumulated.

In this case, the drain generation amount is judged by the gas supply amount, that is, the amount of heat generated by the burner, and the degree of use of the neutralizing agent is known. Will be understood. It should be noted that this gas supply amount is not exactly proportional to the drain generation amount as in the operation time of the second embodiment, but is sufficient as a guide for the replacement time.

In any of the above-mentioned embodiments, the drain container (2) is filled with a neutralizing agent in a water-permeable exchange or replenishment cartridge (2a) as shown in FIG. However, the replacement or replenishment cartridge (2a) may be detachably inserted and mounted in the drain container (2). In this case, as shown in the figure, a configuration in which the replacement or replenishment cartridge (2a) is housed in the storage chamber (21) can be adopted. With this replacement or replenishment cartridge (2a), since the neutralizing agent can be exchanged or replenished for each replacement or replenishment cartridge (2a), the neutralizing agent exchange or replenishment work can be performed easily and quickly. .

In the above embodiment, the neutralizing agent is replaced, but it goes without saying that the neutralizing agent may be supplemented depending on the type. Furthermore, although the hot water heating system has been described in the above embodiment, it may be applied to a water heater. In this case, because hot water is not circulated,
The systern (3) is unnecessary, and the drain discharged from the heat exchange device (A) is directly discharged from the central pipe (26) of the drain container (2) to the drain pipe outside the device. The sub heat exchanger (1b) is supplied with water from the public water supply, and the hot water discharged from the main heat exchanger (1a) is used for filling the bathtub or for the calan in the kitchen. To be done.

[Brief description of drawings]

FIG. 1 is a conventional neutralizing agent exchange or replenishment time detection device for a heat exchange device.

FIG. 2 is an overall explanatory diagram of a hot water heating system according to Embodiment 1 of the present invention.

FIG. 3 is an operation explanatory view of the siphon (22) of the drain container (2).

FIG. 4 is a flow chart showing a control program of the control device (C).

FIG. 5 is a flowchart showing a neutralizing agent replacement timing detection routine (J ₁ ) of this.

FIG. 6 is a flowchart showing a control program according to the second embodiment.

FIG. 7 is a neutralizing agent replacement timing detection routine of the third embodiment (J
Flowchart showing ₁ )

FIG. 8: Modification of the form of the drain container (2)

[Explanation of symbols] (A) ・ ・ ・ Heat exchange device (1) ・ ・ ・ Heat exchanger (2) ・ ・ ・ Drain container (21) ・ ・ ・ Storage chamber (22) ・ ・ ・ Siphon (S) ・..Detecting means (K) ・ ・ ・ Counter (M) ・ ・ ・ Comparator (L) ・ ・ ・ Informing means (T) ・ ・ ・ Timer (R) ・ ・ ・ Accumulating means (G) ・ ・ ・ Gas amount Measuring means

Claims (3)

[Claims] 1. A heat exchanger (1) for producing drain by performing heat exchange until combustion exhaust gas from a burner falls below a dew point.
A drain container (2) containing a neutralizing agent for neutralizing the drain is provided in the drain discharge path of the heat exchange device (A) equipped with, and the drain is stored in the drain container (2). A storage chamber (21) and a siphon that discharges a certain amount of the drain when the storage amount in the storage chamber (21) reaches a predetermined storage amount.
(22) is provided, the detection means (S) that outputs a detection signal when the predetermined storage amount is reached, the counter (K) that accumulates the number of times the detection signal is output, and the counter (K) Comparator that outputs a notification signal when the cumulative number reaches the set number
A neutralizing agent exchange or replenishment timing detection device for a heat exchange device, comprising: (M) and an informing means (L) that is turned on by the annunciation signal to inform the exchange or replenishment of the neutralizing agent by sounding or displaying. 2. A heat exchanger (1) configured to generate heat by exchanging heat until combustion exhaust gas of a burner falls below a dew point.
A drain container (2) containing a neutralizing agent for neutralizing the drain is provided in the drain discharge path of the heat exchange device (A) including the above, and the drain container (2) is provided for each operation of the heat exchange device (A). Heat exchanger
The timer (T) that measures the heat exchange time of (1), the accumulating means (R) that accumulates the measuring time of this timer (T), and the time when the accumulating time of this accumulating means (R) reaches the set time. A neutralizer exchange of a heat exchange device provided with a comparator (M) that outputs a notification signal by (1) and an informing means (L) that is turned on by the above-mentioned notification signal and notifies the replacement or replenishment of the neutralizing agent by sounding or displaying Or a replenishment time detection device. 3. A heat exchanger (1) adapted to generate drain by exchanging heat until the combustion exhaust gas of the burner falls below the dew point.
A drain container (2) containing a neutralizing agent for neutralizing the drain is provided in the drain discharge path of the heat exchange device (A), and the gas is supplied to the burner of the heat exchange device (A). Gas amount measuring means (G) for measuring the amount and outputting the measured value, accumulating means (R) for accumulating the measured values, and this accumulating means (R)
Comparator (M) that outputs a notification signal when the accumulated value of reaches the set value, and notification means (L) that turns on by the notification signal and notifies the replacement or replenishment of the neutralizing agent by sounding or displaying
Neutralizer exchange or replenishment time detection device for heat exchange device provided with.