KR100386960B1 - Combustion device - Google Patents

Abstract

(Problem) The combustion apparatus provided with the drain neutralization apparatus which mixes tap water with the drain which arises from a latent heat recovery type heat exchanger WHEREIN: The use of tap water for neutralization of a drain is restrained to the minimum required according to the use condition of a combustion apparatus.

(Solution means) The discharge destination of the drain 64 joins the drain pipe 9 for draining the tapping water from the gas mechanism 2. On the operation unit 10 of the gas appliance 2, the judging unit 11 for determining the purpose of use of the tapping water and the use of the tapping water not drained to the drainage pipe 9 based on the judgment result of the judging unit 11. In the state of operation, the drain neutralizing device 1 is operated, and in the case of the use state in which the tap water is drained to the drain piping 9, the switching part 12 which makes the drain neutralizing device 1 inoperable is provided.

Description

Combustion device

The present invention belongs to the technical field of a combustion apparatus having a latent heat recovery type heat exchanger, and relates to the provision of a drain neutralizing device for mixing tap water with a drain generated from the heat exchanger.

The combustion apparatus provided with the said latent heat recovery type heat exchanger is used as a hot water heater or a hot water heater, for example, and is widely used for public use or business use. 4 shows a general configuration example of the gas appliance 20 as such a combustion device. According to this, the fuel gas supplied from the gas nozzle 43 is combusted with the gas burner 4 with the air supplied by the fan 7, and the generated combustion exhaust flows below the subsidiary body 3. Then, the heat of combustion in the combustion exhaust is consumed in order to heat the water in the water pipe 51 in the main heat exchanger 5 disposed at the upper end in the subsidiary body 3, and the excess heat of combustion is consumed by the sub heat exchanger 6 at the bottom. It is used to heat the water in the water pipe 61 in the. The combustion exhaust is exhausted out of the gas mechanism 20 from the combustion exhaust passage 32 in the lower portion of the subsidiary body 3.

The water pipes 51 and 61 are continuously connected to the water supply pipe 60 and the tapping pipe 50, and a plurality of fins 52 and 62 are formed on the outer circumference thereof. In the sub-heat exchanger 6, when the combustion exhaust heat exchanges with the cold water in the water pipe 61, not only the sensible heat in the combustion exhaust but also the latent heat possessed by the water vapor in the combustion exhaust is recovered, thereby achieving a high heat exchange rate. do. As a result of the latent heat being recovered in the sub-heat exchanger 6, water vapor in the combustion exhaust condenses to generate a drain 64, which is collected in the drain pan 33 to drain the drain pipe 8. Is discharged through.

The drain 64 absorbs sulfur oxides, nitrogen oxides, and the like in the combustion exhaust to form acidic water at a pH of about 4. Therefore, if the acid drain 64 is discharged as it is, neutralization is performed in the range of pH 5 to 9 because it causes damages such as corrosion of metal products used in piping, deterioration of the state of concrete building, and environmental problems such as water pollution. It is preferable to discharge.

4, the drain neutralizing apparatus 100 which mixes tap water with the said drain 64 in the said gas mechanism 20 is conventionally attached, According to this drain neutralizing apparatus 100, A predetermined amount of tap water is connected by connecting a water supply connector 81 for drawing tap water to the drain pipe 8 and controlling the opening degree of the water solenoid valve 82 attached to the water supply connector 81. It is mixed with the drain 64. As a result, the acid drain 64 can react with the carbonic acid component contained in the tap water to raise the pH value to the reference range (pH 5 to 9), so that such a bad condition does not occur.

However, when the drain pipe 8 is connected to the drain pipe 9 for draining the sewage after using the hot water from the tapping pipe 50, the hot water is used in the gas appliance 20. In a state of immediate drainage (for example, in a shower, washbasin or kitchen), the drain 64 is mixed with the sewage in the drainage pipe 9 and neutralized to near pH7. Even in this case, since the drain neutralizing device 100 operates to continuously supply the tap water to the drain pipe 8, the tap water is wasted.

The present invention relates to a `` combustion apparatus having a latent heat recovery type heat exchanger and a drain neutralization device for mixing tap water with a drain generated from the heat exchanger '', wherein the use of tap water for neutralizing the drain is applied to the use state of the combustion device. Therefore, it is a problem to suppress it to the minimum required.

1 is a schematic view of a gas appliance provided with a neutralizing device according to the present embodiment.

2 is a schematic view of a gas appliance including a neutralizing device according to another embodiment.

3 is a schematic view of a gas appliance including a neutralizing device according to another embodiment.

4 is a schematic view of a conventional gas appliance.

(Explanation of symbols for main parts of drawing)

1-Neutralizer 2,2a-Gas appliance (hot water heater, hot water heater)

3-Subsidiary Gas 4-Gas Burner

5- heat exchanger 6- heat exchanger

7-fan 8-drain tube

9-Drainage Pipe 10-Operation Remote Control

11-Judgment unit (judgment means) 12-Transition unit (diversion means)

32-Combustion exhaust passage 33-Drain pan

53-Bathtub for the bathtub (1 tap for the tap)

54-Hot water shower management (2nd hot water pipe)

55-Toilet tapping line (second tapping line)

56,57-Touch Detection Sensor 64-Drain

81-Water Supply Line 82-Water Solenoid Valve

83-control unit

The technical means of the present invention devised to solve the above problems are as follows.

"The discharge destination of the said drain flows through the heat exchanger, and joins with the drainage pipe of tapping water which came out of the tapping pipe,

Determination means for determining the purpose of use of the tap water;

Receiving the determination signal from the determination means, the drain neutralizing device is operated in the determination signal that the tapping water is not drained, and the drain neutralizing device is deactivated in the determination signal that the tapping water is drained. It characterized in that it comprises a switching means to be.

"The tapping pipe is divided into a first tapping pipe path tapping with a bath or a washing tub and a second tapping pipe tap tapping with a shower, a washbasin or a kitchen, and the judging means is used only by the first tapping pipe path. Outputs a discrimination signal indicating that the tap water is in a drained state, and outputs a discrimination signal indicating that the tap water is in use when the tapping water passage is in use.

"The combustion apparatus outputs a determination signal that the tapping water is not drained when the discriminating means is used as hot water circulating heating as a hot water heater, and when the tapping device is used as hot water, Output a discrimination signal. &Quot;

The technical means act as follows.

According to the switching means, when the determination means receives the determination signal that the tap water is in use, the tap water is not mixed with the drain since the drain neutralizing device is deactivated. However, since the drain discharge destination is joined with the drainage pipe of the tapping water from the tapping pipe through the heat exchanger, in the use state, the drain is mixed with the sewage after use of the tapping water in the drainage pipe. . As a result, the drain is sufficiently neutralized by the sewage and drained.

On the other hand, in the use state in which the tap water is not drained, the drain is not mixed with the sewage as described above. In this use state, since the drain neutralizing device is operated by the switching means receiving the determination signal that the water is not drained by the judging means, the drain is mixed with the tap water, thereby being sufficiently neutralized and drained. .

Further, according to the technical means "the determination means outputs the determination signal based on an operation signal in the operation unit of the combustion device '', for example, the purpose of use of the combustion device is to supply water to a bathtub, for example. The tap water is not drained when it is received, used to fill a washing tank, or used with hot water circulating heating. Therefore, when the operation unit is operated for such use, the determination means recognizes the operation signal and the tap water is used. Outputs a discrimination signal indicating that the operating state is not drained. As a result, the drain neutralizing device is operated by the switching means that receives the discrimination signal so that tap water is mixed with the drain.

On the other hand, since the tap water is drained when used in a shower, a washbasin, or a kitchen for the purpose of using the combustion device, when the operation unit is operated for such use, the determination means recognizes the operation signal and the A determination signal indicating that the tap water is drained is output. As a result, the drain neutralizing device is deactivated by the switching means that receives the discrimination signal so that the tap water is not mixed with the drain and mixed with the sewage of the tap water.

As another technical means, “The drainage destination of the drain is joined with the drainage pipe of tapping water from the tapping pipe through the heat exchanger,

The tapping pipe diverges the tapping pipe line according to the use state in which the tapping water is drained,

The tapping detection sensor is attached to the tapping pipe,

Receiving a detection signal from the tapping detection sensor and providing a switching means for deactivating the drain neutralizing device according to the detection signal that the tapping water comes out of the tapping line. When hot water is withdrawn from the tapping pipe in the used state, the tapping detection sensor detects the tapping state and based on the detection signal, the switching means causes the drain neutralizing device to be inoperative, so that the drain is discharged from the tap water. It will not mix. In this case, the drain is mixed with the sewage of the tapping water and neutralized. Therefore, tap water for neutralizing the drain is supplied only in the case of the tapping state in which the tapping water is not drained, resulting in saving water.

In addition, according to another technical means "with a start switching means for enabling or disabling the drain neutralizing device in advance," the drainage destination of the drain is an installation condition that is always mixed with various wastewater including the combustion device. By the start switching means, the drain neutralizing device can be made in an inoperative state, otherwise the drain neutralizing device can be in an operating state. Therefore, it is possible to set in advance whether or not to enable the drain neutralizing device at the time of installation in accordance with the installation conditions of the combustion device, so that tap water is not required to neutralize the drain until unnecessary.

Embodiment of the Invention

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is described, referring drawings.

FIG. 1: is a schematic diagram which shows the gas mechanism 2 (for example, water heater) as a combustion apparatus of this invention.

The gas mechanism 2 shown in FIG. 1 has the gas burner 4 arrange | positioned at the upper part of the subsidiary body 3, and the flame hole part 42 was set downward, and the main heat exchanger in the lower subsidiary body 3 is shown. The unit 5 and the secondary heat exchanger 6 are arranged in two stages.

The gas nozzle 43 comes into contact with the air supply chamber 41 of the gas burner 4 to supply fuel gas. In addition, a fan 7 is formed in the air supply chamber 41, and when the fan 7 is driven, air is introduced from the air supply port of the gas appliance 2 and supplied into the air supply chamber 41. The combustion exhaust generated by burning the gas burner 4 passes through the main heat exchanger 5 and the sub heat exchanger 6 in the subsidiary body 3, and is connected to the combustion exhaust cylinder connected to the lower part of the subsidiary body 3. It passes through the furnace 32 and is exhausted out of the gas appliance 2.

The main heat exchanger (5) and the sub heat exchanger (6) are composed of water pipes (51, 61) and a plurality of fins (52, 62) formed on the outer periphery, respectively. In addition, the water pipes 51 and 61 are pipes for vertically and horizontally winding the inside of the subsidiary body 3 to introduce water for heat exchange into the main gas appliance 2, and the water supply pipe 60 and the tapping pipe ( 50) in series. The sensible heat is absorbed by the main heat exchanger 5 from the combustion exhaust generated by the combustion of the gas burner 4 and the latent heat is absorbed by the sub heat exchanger 6. As a result, the water flowing through the water pipes 51 and 61 can be efficiently converted into hot water to obtain hot water from the tapping pipe 50.

The tip of the tapping pipe 50 is, in the present embodiment, a tapping pipe path (first tapping pipe line) 53 for a bath tapping with a bath, and a tapping pipe path (second tapping pipe path) 54 for a shower. And branched to a tapping pipe line (second tapping pipe line) 55. Among these, the tapping water used by the shower tapping pipe line 54 and the washbasin tapping pipe path 55 is discharged to the drainage pipe 9 as sewage. In addition, a water tapping valve 53a is attached to the bath tapping pipe path 53, and the water taping valve 53a is based on an operation signal from the operation remote controller 10 to be described later. Perform the opening and closing operation. On the other hand, the taps 54a and 55a are attached to the shower tap line 54 and the washbasin tap line 55, respectively, so that the gas burners are opened when the taps 54a and 55a are opened. 4) is ignited and hot water comes out through the shower tapping pipe line 54 or the washbasin tapping pipe path 55.

When the sub-heat exchanger 6 absorbs latent heat from combustion exhaust, the drain 64 generated by condensation of water vapor is collected in the drain pan 33 attached to the lower part of the sub-heat exchanger 6. A drain pipe 8 is connected to the bottom of the drain pan 33, and the drain 64 flowing into the drain pipe 9 from the drain pipe 8 is the shower tap line 54. ) Or is mixed with the sewage discharged from the toilet tap for 55.

The drain pipe 8 is connected to the drain neutralizing device 1. The drain neutralizing device 1 includes a water supply contact tube 81 branched from the water supply pipe 60, a water receiving valve 82 attached thereto, and a control unit 83 for controlling the opening degree of the water receiving valve 82. It is composed of The drain pipe 8 is connected to the water supply contact tube 81 so that tap water is supplied. In the operating state of the neutralizing device 1, the opening degree of the receiving valve 82 is controlled by the control unit 83 so that the amount of tap water supplied to the drain pipe 8 is controlled to be a predetermined amount. In addition, as a control method in the said control part 83, it implements by determining the tap water addition rate by setting the valve opening time of the said solenoid valve 82 in 1 minute of control periods, for example. The valve opening time may be set in accordance with the generation amount of the drain 64. The acidic drain 64 discharged | emitted by the drain pipe 8 by this is mixed with the predetermined amount of tap water supplied from the said water supply connection pipe 81, and is neutralized.

In addition, a switching unit 12 is connected to the control unit 83 in the neutralizing device 1, and a determination unit 11 is connected to the switching unit 12.

The switching unit 12 adds a switching signal to the control unit 83 and adds a switching function to operate or deactivate the receiving valve 82 according to the use state of the gas mechanism 2. When the receiver valve 82 is operated, a predetermined amount of tap water is supplied to the drain pipe 8 as described above. However, when the receiver valve 82 is deactivated, the water supply contact tube 81 is the receiver valve. It becomes closed state by 82, and tap water is not supplied to the said drain pipe 8. As shown in FIG. Specifically, in the case of the use state (use state in which the hot water is not drained to the drainage pipe 9) only by the tapping pipe passage 53 for the bathtub, the switching signal for operating the water receiving valve 82 Is output to the control unit 83, while the use state by the shower tapping line 54 or the wash tapping pipe 55 (use state that the tap water is drained to the drain pipe 9) ) Outputs a switching signal for deactivating the receiver valve 82 to the controller 83. Then, the actuating valve 82 is operated or deactivated by the controller 83 based on the switching signal of the switching unit 12.

In addition, the determination unit 11 is connected to the operation remote control (operation unit) 10 of the gas appliance 2, and the determination unit 11 performs a water receiving operation from the operation remote control 10 to the bathtub. Determine whether or not. In detail, when the water receiving operation from the operation remote controller 10 to the bathtub is performed, the tap water is drained to the drain pipe 9 as it is in use by only the tapping pipe passage 53 for the bathtub. A determination signal indicating that the operating state is not used is output to the switching unit 12, and in other operations, a determination signal indicating that the tap water is in use is drained to the drain pipe 9, and is output to the switching unit 12. Then, the switching operation by the switching unit 12 is performed based on the determination signals of the determination unit 11.

In addition to the power switch and the temperature setting switch, the operation remote controller 10 is provided with at least a water receiving switch when the gas appliance 2 is a hot water heater. In addition, use as a shower or a washbasin is carried out by operating the manual taps 54a and 55a. In addition, the water receiving switch, the shower switch, and the hot water supply switch may be separately formed according to the purpose of use. In addition, in the hot water heater having a function as a unit for injecting hot water into the washing machine, a laundry injection switch is further formed in the operation remote controller 10.

Further, the shower tapping pipe line 54 and the washbasin tapping pipe path 55 are attached with tapping detection sensors 56 and 57 for detecting tapping conditions in tapping pipe paths 54 and 55, respectively. . These tapping detection sensors (56, 57) is the hot water comes out of the shower tapping pipe (54) and the washbasin tapping pipe (55) when receiving the water by the bath tapping pipe (53) The detection signal is output to the switching unit 12, and the switching unit 12 receiving the detection signal outputs a stop signal for stopping tap water supply from the water supply connection tube 81 to the control unit 83. As the tapping detection sensors 56 and 57, for example, a water flow switch and a flow rate sensor are used. In addition, although the tapping detection sensors 56 and 57 are formed in the combustion apparatus shown in FIG. 1, the tapping detection sensor 56, if the combustion apparatus provided with the said switch part 12 and the said determination part 11 is provided. 57) may not be specifically formed.

Next, the operation of the gas mechanism 2 will be described briefly.

In the operation remote control 10, although the water receiving switch is formed, the use of a shower or a washing face will be described as the case of tapping water by operating the manual faucets 54a and 55a.

First, when the power is turned on with the power switch of the operation remote controller 10 turned ON, the operation signal is sent to the determination unit 11. At this time, the determination unit 11 determines that the tap water is a use state in which the tap water is drained to the drainage pipe 9 as the use state of the gas appliance 2. On the basis of this determination result, a determination signal (used state in which the hot water is drained to the drainage pipe 9) is sent to the switching unit 12. The switching unit 12 then sends a switching signal to the control unit 83 to deactivate the receiving valve 82.

In this state, when hot water is discharged by operating the tap 54a of the shower tap 54 or the tap 55a of the flush tap 55, the secondary heat exchanger ( The drain 64 generated in 6) is collected in the drain pan 33 and guided to the drain pipe 9 through the drain pipe 8. As described above, since the drain 64 absorbs sulfur oxides and nitrogen oxides in combustion exhaust gas and becomes acidic water at pH 4, when the drain 64 is discharged to the sewerage system, the drain 64 may be corroded or corroded from concrete or water pollution. Cause problems. However, the tapping water taken out from the shower tapping pipe line 54 or the washbasin tapping pipe path 55 is drained as wastewater to the drain pipe 9 immediately after use. Then, the acidic drain 64 guided from the drain pipe 8 to the drain pipe 9 is mixed and diluted with the sewage in the drain pipe 9 and thereby neutralized to near pH7. Therefore, there is no such bad situation by the acid drain 64 as described above.

On the other hand, when the water receiving switch of the operation remote control 10 is operated, the operation signal is output to the water receiving valve 53a attached to the bath tapping pipe path 53. Then, the water receptacle valve 53a is opened and hot water comes out of the tapping pipe line 53 for the bathtub, but all tapping water is supplied into the tub so that no sewage is generated.

In this case, when the water receiving switch of the operation remote controller 10 is operated, the operation signal is sent to the judging unit 11, and the judging unit 11 is in use state of the gas appliance 2, and the tapping water is discharged from the drainage pipe 9 It is judged to be a use state not to drain to Based on this determination result, a determination signal (used state in which the tap water is not drained to the drainage pipe 9) is sent to the switching unit 12. Then, the switching unit 12 sends a switching signal for operating the receiving valve 82 to the control unit 11. As a result, the control unit 83 performs operation control of the water receiver valve 82 so that a predetermined amount of tap water is supplied to the water supply contact tube 81 to the drain pipe 8. Thus, the drain 64 generated in the secondary heat exchanger 6 is mixed with the tap water supplied from the water supply pipe 81 in the drain pipe 8 or in the drain pipe 9 to be diluted, thereby reaching pH7. Neutralized. Therefore, even in this case, the above bad situation caused by the acid drain 64 does not occur.

Nevertheless, in the case of a hot water heater capable of simultaneously using a water reservoir and a shower by a faucet, the faucet 54a of the shower tap water passage 54 or the toilet tap water heater 55 in the state of water sink. It is conceivable to operate hot water with hot water by operating 55a). In this case, the wastewater is discharged to the drain pipe 9 and the drain 64 is mixed with the wastewater and neutralized. Therefore, in this case, the tapping detection sensors 56 and 57 attached to the shower tapping pipe line 54 and the washbasin tapping pipe path 55 detect that hot water comes out, and the detection signal is transferred to the switching unit. When sending to (12), the switching unit 12 sends a stop signal to the control unit 83 so as to be in an inoperative state from the operating state of the receiving valve 82. As a result, the water supply contact tube 81 is closed by the solenoid valve 82, so that the tap water is not supplied to the drain tube 8, thereby saving water.

Then, when the hot water of the hot water in the shower tapping pipe line 54 and the washbasin tapping pipe line 55 is stopped by operating the taps 54a and 55a, the drain 64 is stopped. Does not mix with sewage In this case, a detection signal is output from the tapping detection sensors 56 and 57 to the switching unit 12, and then the switching unit 12 sends a return signal to the control unit 83 to open the receiving valve 82. Switch from inactive to active. The tap water is again supplied to the drain pipe 8 by this.

Subsequently, in the case where a shower switch or a tapping switch for performing a predetermined amount of tapping is formed in addition to the tapping switch in the operation remote controller 10, the neutralizing device 1 when the tapping switch is operated is The operation is similar to the above, and a predetermined amount of tap water is supplied from the water supply connection pipe 81, whereby the acid drain 64 is mixed with the tap water in the drain pipe 8 or the like to neutralize the drain pipe 9. Drained.

On the other hand, when the shower switch or the hot water switch is operated, the operation signal is sent to the judging unit 11 at that time, and the judging unit 11 uses the gas appliance 2 as the operating state of the gas drainage pipe 9. The switching unit 12 receives the determination signal based on the determination result of the determination unit 11 and determines that the receiving valve 82 is inoperative with respect to the control unit 83. Output the signal. Thus, in the control unit 83, the operation control of the water receiver valve 82 is not executed, so that the water supply contact tube 81 is closed by the water receiver valve 82, and the drain pipe 8 includes the water supply contact tube. Tap water is not watered at (81). In this case, since the sewage of the hot water discharged from the shower tapping pipe line 54 or the washbasin tapping pipe 55 is discharged to the drainage pipe 9, the acidic drain 64 is formed in the drainage pipe 9. In the mixed with the sewage to be drained in a neutral state.

Thus, according to the said embodiment, when the drain 64 is necessarily mixed with wastewater according to the use state of the gas appliance 2, since tap water is not supplied from the said water supply connection tube 81, tap water is wasted. There is nothing to do. In addition, this saves water and the neutralization cost of the drain 64 is also low.

Next, another embodiment of the present invention will be described.

In the combustion apparatus which concerns on other embodiment shown in FIG. 2, it replaces with the determination part 11 in the said embodiment (refer FIG. 1) to the shower tapping pipe line 54 and the washbasin tapping pipe 55. As shown in FIG. The tapping detection sensors 56 and 57 are formed. In this case, in the operating state of the gas mechanism 2, the control of the opening degree of the water receiver valve 82 is executed by the control unit 83 so that tap water is supplied from the water supply connection tube 81 to the drain pipe 8. When hot water is detected in the hot water supply pipe line 54 for the shower or the hot water supply pipe line 55 by the hot water supply detection sensors 56 and 57, the tap water valve is closed and the tap water in the drain pipe 8 is closed. Do not allow this water supply. For example, in the tapping state only in the tapping pipe path 53 for the bathtub, tap water is supplied to the drain pipe 8 from the water supply contact tube 81 by the operation of the water receiver valve 82, but in this state. When hot water is discharged by manipulating the tap 54a of the shower tap 54 or the tap 55a of the flush tap 55, the tap detection sensors 56 and 57 The tapping in the shower tapping pipe line 54 or the washbasin tapping pipe line 55 is detected. Then, the detection signal is output to the switching unit 12, and the switching unit 12 receiving the detection signal sends a stop signal to the control unit 83 to move the receiving valve 82 from an operating state to an inoperative state. Switch. As a result, the water supply contact tube 81 is closed by the solenoid valve 82 so that the tap water is not supplied to the drain tube 8. In this case, the drain 64 is connected to the shower tap line 54. Or since it mixes with the wastewater in the said flushing water supply line 55, since the neutralization process of the drain 64 is performed, saving water is attained.

Thereafter, when tapping of the shower tapping pipe line 54 and the washbasin tapping pipe path 55 is stopped in the tapping state in the bath tapping pipe 53, the drain 64 is discharged to the shower. It is mixed with the sewage from the hot water pipe passage 54 or the water tapping pipe passage 55. Therefore, in this case, the tapping detection sensors 56 and 57 output a detection signal to the switching unit 12 that tapping is stopped. When the switching unit 12 receives the input of the detection signal of the tapping stop from each tapping detection sensors 56 and 57, the switching unit 12 outputs a return signal to the control unit 83 and deactivates the receiving valve 82. Switch from operating state to operating state. As a result, tap water is supplied to the drain pipe 8 in the water supply contact tube 81, and the drain 64 is mixed with the tap water to be neutralized.

Next, the combustion apparatus by another embodiment shown in FIG. 3 is a case of a hot water heater, In this case, the heat exchanger 2b provided with the hot water circulation type | mold pipe is further added, and the drain pipe from this heat exchanger 2b is added. An 80 is connected to the drain pipe 8 of the hot water supply side heat exchanger 2. The hot water circulation pipe is configured to circulate between the heat exchanger 2b and the indoor unit 200. And although the heating switch is formed in the operation remote control 10 in this apparatus, the remote control only for heating which provided this heating switch may be provided separately. Other configurations are the same as those shown in FIG.

According to this, when the operation of the heating switch is performed by the operation remote control 10, the hot water is circulated between the heat exchange device 2b and the indoor unit 200 through the hot water circulation pipeline, the hot water is drained It doesn't work. The drain generated in the heat exchanger 2b passes through the drain tube 80 and is discharged to the drain tube 8 of the hot water supply side heat exchanger 2. Therefore, in this case, by the operation of the heating switch, the determination unit 11 outputs to the switching unit 12 a determination signal that the water is not used in the drainage state. Then, the switching unit 12 outputs a switching signal to the control unit 83 so that the tap water is supplied from the water supply connection tube 81 to the drain pipe 8 so as to open the receiver valve 82. As a result, the drain generated in the heat exchanger 2b is mixed with tap water in the drain tube 8 and neutralized. That is, in this embodiment, when the heating switch is operated, the same operation as that in the case where the operation of the water receiving switch is performed is shown in FIG. In addition, operation | movement in the hot water supply side heat exchanger 2 performs the operation similar to the thing of the said embodiment shown in FIG.

Subsequently, although not shown, in each of the above embodiments, the power receiver is replaced with, or in addition to, the switching unit 12, the determination unit 11, and the tapping detection sensors 56 and 57. A start switching switch (start switching means) may be formed to enable or disable the opening and closing operation of the valve 82. In this case, when the drainage destination of the drain 64 is an installation condition in which the drainage path is always mixed with various sewage, including the gas mechanisms 2 and 2a, in the start-up switch, the receiver valve 82 is used. ), The drain neutralizing device 1 can be made inoperable, and it is not necessary to use tap water for neutralizing the drain 64 from the beginning of use after the installation of the gas appliances 2, 2a. On the other hand, when the drain 64 is an installation condition in a drainage path which is not mixed with other wastewater, the control of the drain neutralizing device 1 may be performed in the same manner as in each of the above-described embodiments. In the case where the start switching switch (start switching means) is formed in place of the determination unit 11 and the tapping detection sensors 56 and 57, the start switching switch is operated to perform the operation of the neutralizing device 1. As a result, the drain 64 is neutralized by tap water by the drain neutralizing device 1 and drained.

Moreover, in each said embodiment, although the tapping pipe path 53 for a bathtub is illustrated as a 1st tapping pipe path, it may be a tapping pipe path to the washing tank of a washing machine other than this.

In addition, although the gas mechanism 2 was mentioned as a combustion apparatus in each said embodiment, the petroleum mechanism which burns liquid fuel, such as petroleum, may be sufficient, for example.

As described above, according to the present invention, when the drain is inevitably mixed with the sewage according to the use condition and the installation conditions of the combustion apparatus, tap water for drain neutralization is wasted because the tap water is not supplied by the drain neutralizer. This saves water and reduces the cost of neutralizing the drain.

Claims (6)

A combustion apparatus comprising a latent heat recovery type heat exchanger and a drain neutralization device for mixing tap water with a drain generated by the heat exchanger, The drainage destination of the drain is joined with the drainage pipe of tapping water from the tapping pipe passing through the heat exchanger, Determination means for determining the purpose of use of the tap water; The drain neutralizing device is operated in the discrimination signal of the use state in which the tapping water is not drained by receiving the discrimination signal from the determination means, and the drain neutralizing device is deactivated in the determination signal of the use state in which the tapping water is drained. Combustion apparatus comprising a switching means for operation. The method according to claim 1, The tapping pipe is branched into a first tapping pipe path tapping with a bath or a washing tub, and a second tapping tap path tapping with a shower, a toilet, or a kitchen. The judging means outputs a determination signal that the tapping water is not drained when it is used by the first tapping pipe line only, and the tapping water is drained when it is used by the second tapping pipe line. Combustion apparatus, characterized in that for outputting a discrimination signal. The method according to claim 1, The combustion device is a hot water heater, The judging means outputs a determination signal indicating that the tap water is not drained when the hot water circulation type is used, and outputs a discrimination signal indicating that the tap water is drained when the hot water is used. Combustion device. The method according to any one of claims 1 to 3, And the judging means outputs the discrimination signal based on an operation signal in the operation section of the combustion apparatus. A combustion apparatus comprising a latent heat recovery type heat exchanger and a drain neutralization device for mixing tap water with a drain generated by the heat exchanger, The discharge destination of the drain is joined with the drain pipe of the tapping water from the tapping pipe passing through the heat exchanger, The tapping pipe branches the tapping pipe line according to the use state in which the tapping water is drained, The tapping detection sensor is attached to the tapping pipe, And a switching means for deactivating the drain neutralizing device by the detection signal that the detection signal from the tapping detection sensor is received and the tapping water is withdrawn from the tapping pipe line. A combustion apparatus comprising a latent heat recovery type heat exchanger and a drain neutralization device for mixing tap water with a drain generated by the heat exchanger, And a start-up switching means for enabling or disabling the drain neutralizing device in advance.