JP2014074523A - Atomizer of latent heat recovery type hot water system and latent heat recovery type hot water system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an atomizer of a latent heat recovery type hot water system which eliminates the need of a special drain vertical pipe and further inhibits nozzle clogging and dripping without deteriorating the combustion efficiency, and to provide the latent heat recovery type hot water system.SOLUTION: An atomizer of a latent heat recovery type hot water system includes: a drain tank 11 for accumulating drain water; a compressor 12 which may generate compressed air; a nozzle 13 which may concurrently discharge two kinds of fluids from a discharge port; a drain inflow pipeline H1 which guides the drain water generated by a heat exchanger for recovering latent heat to the drain tank; a drain discharge pipeline H2 which guides the drain water in the train tank to the nozzle; an air pipeline H3 which guides the compressed air generated by the compressor to the nozzle; and a valve member 14 which is provided at any position in the drain discharge pipeline. The atomizer of the latent heat recovery type hot water system utilizes the compressed air discharged from the nozzle to spray the drain water which is guided to the nozzle via the drain discharge pipeline.

Description

  The present invention relates to an atomizing device for a latent heat recovery type hot water system and a latent heat recovery type hot water system.

In recent years, when the hot water supply water is heated by supplying the combustion heat (sensible heat) of fuel such as city gas or kerosene, the heat (residual sensible heat and latent heat) of the heated combustion exhaust gas is further recovered. In addition, a latent heat recovery type hot water system has been put to practical use, which is used for preheating hot water supply water to increase the efficiency of heat use during hot water supply.
In this latent heat recovery type hot water system, acidic water vapor contained in the combustion exhaust is condensed at the time of latent heat recovery, so various methods for neutralizing and draining this condensed water (so-called drain water) are available. It is taken. For example, in the case of a detached house, drain water can be discharged into miscellaneous drainage or rainwater ditches, etc. In the case of apartment buildings, a dedicated drainage stand is installed, and drainage water is discharged from this dedicated drainage standpipe. Is drained.
However, it is very difficult to install the above-mentioned dedicated drainage pipes in an existing apartment house later, which may hinder switching from a non-latent heat recovery type hot water system to a highly efficient latent heat recovery type hot water system. It has become. In order to cope with this problem, various latent heat recovery hot water systems that can eliminate the need for a dedicated drainage stand have been proposed.

For example, in the prior art described in Patent Document 1, drain water neutralized by a neutralizing agent and stored in a drain tank is discharged from a position upstream of the combustion heating means through which combustion air passes by a nozzle. A latent heat recovery type gas water heater is disclosed that is nebulized, vaporized by a combustion heating means, and discharged to the outside of the apparatus together with combustion exhaust, thereby eliminating the need for a dedicated drainage standpipe.
Further, in the prior art described in Patent Document 2, drain water neutralized with a neutralizing agent and stored in the drain tank is supplied to the drain pump when the discharge pressure of the drain pump reaches a predetermined pressure. There is disclosed a water heater that eliminates the need for a dedicated drainage stand by sucking and ejecting vigorously from the nozzle to the outside of the device.

JP 2004-132642 A JP 2007-101074 A

In the prior art described in Patent Document 1, the drain water is vaporized by the combustion heating means, and the flame temperature at the time of combustion is lowered, so that the combustion efficiency is lowered. Further, there is a possibility that dripping will occur due to condensation by the combustion heating means, and there is a possibility that the neutralizing agent will be deposited at the nozzle spraying the drain water and the nozzle will be clogged. Since the nozzle used in Patent Document 1 is a so-called one-fluid nozzle that is supplied with only liquid drain water and sprays only the drain water, the drain water is likely to remain relatively, and the neutralizing agent is generated from the remaining drain water. The calcium component (mainly calcium carbonate is used) is likely to deposit and clog. Further, the drain water cannot be discharged unless the combustion heating means is in operation.
The nozzle used in Patent Document 2 is also a so-called one-fluid nozzle that supplies only drain water and sprays only the drain water as in Patent Document 1, and the neutralizing agent is deposited as in Patent Document 1. The nozzle may become clogged. Moreover, although drain water is sprayed from the exhaust port of a water heater, since only drain water is sprayed, a particle diameter is comparatively large and it is hard to spread | diffuse. Moreover, even if spraying is performed in a state where the discharge pressure of the drain pump is high, it is considered that the discharge pressure becomes low at the start of spraying and at the end of spraying, so that there is a possibility of dripping.
The present invention was devised in view of such points, and does not require a dedicated drainage stand, and further suppresses nozzle clogging and dripping without reducing combustion efficiency. It is an object of the present invention to provide an atomization device for a latent heat recovery type hot water system and a latent heat recovery type hot water system.

In order to solve the above-mentioned problems, the atomization device for a latent heat recovery hot water system and the latent heat recovery hot water system according to the present invention take the following means.
First, the first invention of the present invention is a latent heat recovery type hot water system in which drain water generated in a latent heat recovery heat exchanger of the latent heat recovery type hot water system is atomized and discharged from the latent heat recovery type hot water system. In the atomization device, a drain tank for storing drain water, a compressor capable of generating compressed air, a nozzle capable of simultaneously discharging two types of fluid from the discharge port, and the latent heat recovery heat exchanger A drain inflow pipe for leading the generated drain water to the drain tank, a drain discharge pipe for leading the drain water in the drain tank to the nozzle, and an air for guiding the compressed air generated by the compressor to the nozzle A pipe member and a valve member provided at any position in the drain discharge pipe. The compressed air discharged from the nozzle is used to pass through the drain discharge pipe. Spraying drain water is guided to the nozzle, an atomization device latent heat recovery type hot water system.

In the first aspect of the invention, a so-called two-fluid nozzle capable of simultaneously spraying both drain water and compressed air is used as the drain water spray nozzle, and the drain water and compressed air are sprayed simultaneously from the nozzle.
As a result, drain water can be atomized to a diameter of several [μm] and discharged, and when the atomizer is attached to a latent heat recovery hot water system, a dedicated drainage stand is not required and combustion The efficiency is not reduced. Moreover, since compressed air is injected simultaneously, nozzle clogging and dripping can be suppressed appropriately.
In addition, by setting the height from the drain tank to the nozzle within a predetermined head, it is possible to suck up drain water from the drain tank by the venturi effect due to the flow of compressed air, eliminating the need for a drain pump that guides the drain water to the nozzle. It becomes.

  Next, a second invention of the present invention is the atomization device for the latent heat recovery hot water system according to the first invention, wherein either of the valve member and the drain tank in the drain discharge pipe. A drain pump capable of pumping the drain water in the drain tank toward the nozzle is provided at the position.

In this 2nd invention, the drain pump is provided between the drain tank and valve member in drain discharge piping.
As a result, even if the height from the drain tank to the nozzle is such that the venturi effect cannot be used, the drain water in the drain tank can be guided to the nozzle, so the arrangement position of the drain tank and nozzle is free. Can be set to

  Next, a third invention of the present invention is an atomization device for a latent heat recovery hot water system according to the first invention or the second invention, and is capable of detecting the level of drain water in the drain tank. A water level detection means, and an atomization control device that controls the compressor and the valve member, or the compressor, the valve member, and the drain pump, and the atomization control device includes: The operation state of the compressor and the valve member, or the operation state of the compressor, the valve member, and the drain pump is changed according to the water level of the drain water detected based on the detection signal.

In this 3rd invention, the water level detection means is provided in the drain tank, and the atomization control apparatus which controls a compressor, a valve member, and a drain pump is provided.
Thereby, since drain water can be appropriately sprayed only when an appropriate amount of drain water to be sprayed is accumulated in the drain tank, wasteful operations such as a compressor and a drain pump can be eliminated. .

  Next, 4th invention of this invention is the atomization apparatus of the latent-heat-recovery type hot water system which concerns on the said 3rd invention, Comprising: The said atomization control apparatus can detect time, and was preset. The operation state of the compressor and the valve member or the operation state of the compressor, the valve member, and the drain pump is changed according to the time zone.

According to this 4th invention, the atomization control apparatus has the structure which detects time and changes operation | movement of a compressor, a valve member, and a drain pump according to the preset time slot | zone.
Accordingly, it is possible to freely set the drain water discharge time zone, which is convenient because it can be set to automatically drain the drain water at midnight, for example.

  Next, a fifth invention of the present invention is an atomization device for a latent heat recovery hot water system according to any one of the first to fourth inventions, wherein any one of the drain inflow pipes is provided. The position is provided with a neutralizing device for neutralizing the drain water passing therethrough.

In this 5th invention, the neutralization apparatus for neutralizing acidic drain water is provided.
Thereby, since the acidic drain water can be neutralized and sprayed and discharged at the time when it is generated in the latent heat recovery heat exchanger, the drain water can be discharged more safely.

  Next, a sixth invention of the present invention is an atomization device for a latent heat recovery hot water system according to any one of the first to fifth inventions, wherein the drain tank or the drain tank. Alternatively, at least one of the neutralization devices is provided with a filtration device for filtering the drain water passing therethrough.

In this 6th invention, the filtration apparatus which filters drain water is provided.
Thereby, even if impurities such as fine dust are mixed in the drain water, the impurities can be filtered to prevent clogging of the nozzle and the pipe.
Moreover, when it has a neutralizer, the general neutralizer mainly uses calcium carbonate, and the calcium component is dissolved in the drain water. If this calcium component precipitates in the nozzle or pipe, clogging occurs in the nozzle or pipe. Therefore, clogging of nozzles and piping can be further suppressed by using a filtration device that removes calcium components.

  Next, a seventh aspect of the present invention is a combustion heating means for burning fuel, a main heat exchanger for heating feed water using heat generated by the combustion heating means, and a combustion heating means for the combustion heating means. Any one of the first to sixth inventions, comprising: an air supply fan that supplies air; and the latent heat recovery heat exchanger that preheats feed water using heat of combustion exhaust gas produced by the combustion heating means. The latent heat recovery type hot water system is a latent heat recovery type hot water system in which the atomizing device of the latent heat recovery type hot water system is incorporated in advance.

In the seventh aspect of the invention, a latent heat recovery type hot water system in which the atomization device according to any one of the first to sixth aspects of the invention is built in is configured.
As a result, when a new latent heat recovery hot water system is installed in a detached house or apartment house, a dedicated drainage stand is not required, and the nozzles are clogged or dripping without reducing combustion efficiency. It is possible to provide a latent heat recovery hot water system that can further suppress the above.

  Next, an eighth invention of the present invention is the latent heat recovery hot water system according to the seventh invention, wherein the compressor, the nozzle, the drain discharge pipe, the air pipe, and the valve member In the case where the drain pump is included, the drain pump, and in the case where the atomization control device is included, the atomization control device is excluded. And the nozzle, the drain discharge pipe, the air pipe and the valve member, or the compressor, the nozzle, the drain discharge pipe, the air pipe, the valve member, the drain pump, or the compressor and the The nozzle, the drain discharge pipe, the air pipe, the valve member, and the atomization control device, or the compressor, the nozzle, the drain discharge pipe, the air pipe, the valve member, the drain pump, and the Of the controller, but the latent heat recovery type water heater is installed is added later installed, a latent heat recovery type hot water system.

In the eighth invention, a compressor, a nozzle, a drain discharge pipe, and an air pipe are provided for an (existing) latent heat recovery type hot water apparatus that does not include a compressor, a nozzle, a drain discharge pipe, an air pipe, and a valve member. And a valve member and the like are added later to form a latent heat recovery type hot water system.
Thereby, even if it is a latent heat recovery type hot water apparatus which is not equipped with the atomization means of drain water, drain water can be discharged | emitted by adding the apparatus equivalent to the atomization apparatus of this invention.

  Next, a ninth invention of the present invention is the latent heat recovery hot water system according to the seventh invention or the eighth invention, wherein the nozzle is disposed at an exhaust port of the latent heat recovery hot water system. When the drain water is sprayed from the nozzle, the air supply fan is operated.

In the ninth aspect of the invention, the nozzle is arranged at the exhaust port, and the air supply fan is operated when spraying the drain water.
Thereby, it is possible to promote the diffusion of the drain water discharged as fine particles by the nozzle into the outside air.

  Next, a tenth aspect of the present invention is the latent heat recovery hot water system according to any one of the seventh to ninth inventions, wherein the nozzle is an exhaust of the latent heat recovery hot water system. The drain water is sprayed from the nozzle when the combustion heating means is operated.

In the tenth aspect of the invention, when the nozzle is disposed at the exhaust port and the combustion heating means is operated, drain water is injected from the nozzle.
As a result, the drain water discharged as fine particles by the nozzle comes into contact with the combustion exhaust gas, whereby a part of the drain water is vaporized and discharged into the outside air to promote diffusion. Further, when the neutralized drain water is discharged, the acidic water vapor in the combustion exhaust can be weakly acidified.

It is a figure explaining the example of a structure of the latent heat recovery type hot water system in 1st Embodiment, and the atomization apparatus of a latent heat recovery type hot water system. It is a figure explaining the example of a structure of the latent heat collection | recovery type hot water system in 2nd Embodiment, and the atomization apparatus of a latent heat collection | recovery type hot water system. It is a figure explaining the example of a structure of the latent heat recovery type hot water system in 3rd Embodiment, and the atomization apparatus of a latent heat recovery type hot water system. It is a figure explaining the example of a structure of the latent heat recovery type hot water system in 4th Embodiment, and the atomization apparatus of a latent heat recovery type hot water system. It is a figure explaining the example of a structure of the latent heat recovery type hot water system in 5th Embodiment, and the atomization apparatus of a latent heat recovery type hot water system. It is a flowchart explaining the example of the process sequence of the atomization control apparatus in 6th Embodiment.

EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. In addition, in this application, it has the characteristics in the atomization apparatuses 10A-10E of a latent heat recovery type hot water system.
[[Latent heat recovery type hot water system 1A in the first embodiment and Atomization device 10A of the latent heat recovery type hot water system] (FIG. 1)]
First, the configuration of the latent heat recovery hot water system 1A and the atomization device 10A (hereinafter referred to as the atomization device 10A) of the latent heat recovery hot water system in the first embodiment will be described with reference to FIG.

The latent heat recovery hot water system 1A includes a combustion heating means 31, a main heat exchanger 32, a latent heat recovery heat exchanger 33, an air supply fan 34, a system control device 35, an atomization device 10A, a hot water pipe W1, a fuel pipe F1, and the like. It is composed of.
The combustion heating means 31 generates heat by burning fuel such as city gas and kerosene supplied from the fuel pipe F1. The fuel pipe F <b> 1 guides the supplied fuel to the combustion heating means 31.
The main heat exchanger 32 heats the feed water flowing through the hot water pipe W1 using the heat generated by the combustion heating means 31 (heats the feed water preheated by the latent heat recovery heat exchanger 33).
The latent heat recovery heat exchanger 33 heats (preliminarily heats) the feed water flowing in the hot water pipe W1 using the heat of the combustion exhaust gas generated by the combustion of the combustion heating means 31. Note that the preliminary heating is heating that is less heated than the heating by the main heat exchanger 32, and refers to heating performed in advance before heating by the main heat exchanger 32.
The hot water pipe W1 is arranged so that the supplied water (cold water) is guided to the main heat exchanger 32 after being guided to the latent heat recovery heat exchanger 33, and the supplied water is first supplied with latent heat recovery heat. Preheated by the exchanger 33 and further heated by the main heat exchanger 32.

In the latent heat recovery heat exchanger 33, the acidic water vapor contained in the combustion exhaust is condensed during the recovery of the latent heat to generate drain water DR. The drain water DR generated in the latent heat recovery heat exchanger 33 is captured by a receiving tray or the like and guided to a drain inflow pipe H1 described later.
The air supply fan 34 sucks air from the intake port 30 </ b> A, pumps air (oxygen) to the combustion heating means 31, and causes the combustion heating means 31 to completely burn the fuel. Then, by sending air from the air supply fan 34, a combustion exhaust flow from the intake port 30A to the exhaust port 30B is generated in the latent heat recovery hot water system 1A.
The system controller 35 controls the operations of the combustion heating means 31 and the air supply fan 34.

The atomizing device 10A includes a drain tank 11, a compressor 12, a nozzle 13, a drain inflow pipe H1, a drain discharge pipe H2, an air pipe H3, a valve member 14, and the like.
The drain tank 11 is a tank for storing drain water DR generated in the latent heat recovery heat exchanger 33 of the latent heat recovery type hot water system 1A. The drain water is stored in the nozzle 13 via the drain discharge pipe H2. To supply.
The compressor 12 can generate compressed air, and supplies the generated compressed air to the nozzle 13 via the air pipe H3.
The drain inflow pipe H <b> 1 is a pipe that guides the drain water DR generated in the latent heat recovery heat exchanger 33 of the latent heat recovery hot water system 1 </ b> A to the drain tank 11.
The drain discharge pipe H <b> 2 is a pipe that guides drain water in the drain tank 11 to the nozzle 13.
The air pipe H <b> 3 is a pipe that guides the compressed air generated by the compressor 12 to the nozzle 13.
The valve member 14 is a valve that opens or closes the drain discharge pipe H2.

The nozzle 13 is a so-called two-fluid nozzle that can simultaneously discharge two types of fluids (in this case, liquid drain water and gaseous compressed air). The end of the drain discharge pipe H <b> 2 is disposed in the middle of the path from the compressed air discharge port in the nozzle 13 to the tip of the nozzle 13. Thereby, when compressed air is injected, drain water can be sucked up by the venturi effect, and the sucked-up drain water can be sprayed from the tip of the nozzle 13.
The compressor 12 and the valve member 14 may be configured to be controlled by the system controller 35 of the latent heat recovery hot water system 1A, or always operate when the latent heat recovery hot water system 1A is activated. It may be configured so that the power source of the latent heat recovery type hot water system is connected.

The atomizing device 10A according to the first embodiment supplies drain water and compressed air to the nozzle 13 which is a two-fluid nozzle and sprays the water simultaneously using a venturi effect. It can be discharged after being atomized to a diameter of several [μm].
This eliminates the need for a dedicated drainage stand and does not reduce the combustion efficiency. Moreover, since compressed air is injected simultaneously, nozzle clogging and dripping can be suppressed appropriately.
Further, by setting the height from the drain tank 11 to the nozzle 13 within a predetermined head, it is possible to suck up the drain water from the drain tank 11 by the venturi effect due to the flow of compressed air, and the drain water is guided to the nozzle 13. Therefore, a drain pump is not necessary.

[[Latent heat recovery type hot water system 1B in the second embodiment and Atomization device 10B of the latent heat recovery type hot water system] (FIG. 2)]
Next, the configuration of the latent heat recovery hot water system 1B and the atomization device 10B of the latent heat recovery hot water system (hereinafter referred to as the atomization device 10B) in the second embodiment will be described with reference to FIG. .
The latent heat recovery hot water system 1B of the second embodiment is different from the latent heat recovery hot water system 1A of the first embodiment shown in FIG. 1 in the configuration of the atomizer 10B, and a drain pump 15 is added. Has been. Hereinafter, this difference will be mainly described.

The combustion heating means 31, main heat exchanger 32, latent heat recovery heat exchanger 33, air supply fan 34, system controller 35, hot water pipe W1, and fuel pipe F1 in the latent heat recovery hot water system 1B shown in FIG. 1 is the same as the latent heat recovery hot water system 1A shown in FIG.
2 is provided with a drain pump 15 at any position between the valve member 14 and the drain tank 11 in the drain discharge pipe H2 with respect to the atomizer 10A shown in FIG. It has been.
The drain pump 15 pumps the drain water in the drain tank 11 toward the nozzle 13, but the spray from the nozzle 13 is sprayed by the venturi effect due to the flow of compressed air. The lift can be maintained within the range 13 and a relatively small pump is sufficient.
As with the compressor 12 and the valve member 14, the drain pump 15 may be configured to be controlled from the system controller 35 of the latent heat recovery hot water system 1A, or the latent heat recovery hot water system 1A is activated. In such a case, it may be configured to always operate (so that the power source of the latent heat recovery hot water system is connected).

Even if the height from the drain tank 11 to the nozzle 13 is a lift where the venturi effect cannot be used, the atomizing device 10B of the second embodiment has the drain pump 15 in the drain tank 11. The drain water can be guided to the nozzle 13.
Thereby, the arrangement positions of the drain tank 11 and the nozzle 13 can be freely set.

[[Latent heat recovery type hot water system 1C in the third embodiment and Atomization device 10C of the latent heat recovery type hot water system] (FIG. 3)]
Next, the configuration of the latent heat recovery hot water system 1C and the atomization device 10C of the latent heat recovery hot water system (hereinafter referred to as the atomization device 10C) in the third embodiment will be described with reference to FIG. .
The latent heat recovery hot water system 1C of the third embodiment is different from the latent heat recovery hot water system 1B of the second embodiment shown in FIG. Have been added. Hereinafter, this difference will be mainly described.

The combustion heating means 31, main heat exchanger 32, latent heat recovery heat exchanger 33, air supply fan 34, system controller 35, hot water pipe W1, and fuel pipe F1 in the latent heat recovery hot water system 1C shown in FIG. 1 is the same as the latent heat recovery hot water system 1A shown in FIG.
The neutralizing device 10C shown in FIG. 3 neutralizes the (acidic) drain water that passes at any position in the drain inflow pipe H1 with respect to the atomizing device 10B shown in FIG. 16 is provided.
A certain amount of neutralizing agent 16 </ b> A is disposed inside the neutralizing device 16. For example, calcium carbonate is used as the neutralizing agent 16A to neutralize acidic drain water.

In the atomization apparatus 10C according to the third embodiment, since the neutralized drain water is sprayed and discharged, the drain water can be discharged more safely, such as a handrail or a sash around the exhaust port. Corrosion of metal objects can be reduced.
In addition, in 3rd Embodiment demonstrated above, although 10 C of atomization apparatuses which added the neutralization apparatus 16 to the atomization apparatus 10B of 2nd Embodiment were demonstrated, 1st implementation shown in FIG. You may add the neutralization apparatus 16 to 10 A of atomization apparatuses of the form.

[[Latent Heat Recovery Type Hot Water System 1D and Atomization Device 10D of Latent Heat Recovery Type Hot Water System in Fourth Embodiment] (FIG. 4)]
Next, the configuration of the latent heat recovery hot water system 1D and the atomization device 10D of the latent heat recovery hot water system (hereinafter referred to as the atomization device 10D) in the fourth embodiment will be described with reference to FIG. .
The latent heat recovery type hot water system 1D of the fourth embodiment is different from the latent heat recovery type hot water system 1C of the third embodiment shown in FIG. Has been. Hereinafter, this difference will be mainly described.

The combustion heating means 31, main heat exchanger 32, latent heat recovery heat exchanger 33, air supply fan 34, system controller 35, hot water pipe W1, and fuel pipe F1 in the latent heat recovery type hot water system 1D shown in FIG. 1 is the same as the latent heat recovery hot water system 1A shown in FIG.
4 is provided with a filtering device 17 for filtering the drain water passing through the neutralizing device 16 or the drain tank 11 with respect to the atomizing device 10C shown in FIG. In addition, when it has a neutralization apparatus, a filtration apparatus is arrange | positioned in the any position after passing a neutralizer.
The filtration device 17 removes the dust mixed in the drain water and removes the calcium component from the drain water that has passed through the neutralization device 16.

When calcium carbonate is used as the neutralizer 16A of the neutralizer 16, the calcium component may be dissolved in the drain water that has passed. If calcium precipitates in the drain discharge pipe H2 or the nozzle 13 due to this calcium component, the pipe or nozzle may be clogged.
Therefore, in the atomizing device 10 </ b> D of the fourth embodiment, dust and calcium components in the drain water are removed using the filtering device 17 and the drain water is guided to the nozzle 13.
Thereby, even if impurities such as fine dust are mixed in the drain water, the impurities can be filtered to appropriately prevent clogging of the nozzle 13, the drain inflow pipe H1, the drain discharge pipe H2, and the like.
Further, for example, in the case of having a neutralizing device using calcium carbonate, the calcium component may be dissolved in the drain water. Therefore, by using the filter device 17 that can also remove the calcium component, the nozzle 13 or Clogging of the drain inflow pipe H1 and the drain discharge pipe H2 can be further suppressed.

  In the fourth embodiment described above, the atomizing device 10D in which the filtering device 17 is added to the atomizing device 10C of the third embodiment has been described. However, the first embodiment shown in FIG. The filtering device 17 may be added to the atomizing device 10A of the embodiment or the atomizing device 10B of the second embodiment shown in FIG. In addition, what is necessary is just to provide the filtration apparatus 17 in the drain tank 11 in the case of the atomization apparatus which does not have a neutralization apparatus.

[[Latent Heat Recovery Type Hot Water System 1E and Atomization Device 10E of Latent Heat Recovery Type Hot Water System in Fifth Embodiment (FIGS. 5 and 6)]
Next, with reference to FIG. 5 and FIG. 6, the configurations of the latent heat recovery hot water system 1E and the atomization device 10E of the latent heat recovery hot water system (hereinafter referred to as the atomization device 10E) according to the fifth embodiment. The operation of the atomizing device 10E will be described.
The latent heat recovery type hot water system 1E of the fifth embodiment is different from the latent heat recovery type hot water system 1D of the fourth embodiment shown in FIG. An atomization control device 19 is added. Hereinafter, this difference will be mainly described.

The combustion heating means 31, main heat exchanger 32, latent heat recovery heat exchanger 33, air supply fan 34, system controller 35, hot water pipe W1, and fuel pipe F1 in the latent heat recovery type hot water system 1E shown in FIG. 1 is the same as the latent heat recovery hot water system 1A shown in FIG.
And the atomization apparatus 10E shown in FIG. 5 is provided with a water level detection means 18 and an atomization control apparatus 19 with respect to the atomization apparatus 10D shown in FIG.
The water level detection means 18 is disposed in the drain tank 11, for example, and outputs a detection signal corresponding to the water level (water amount) of the drain water stored in the drain tank 11.
The atomization control device 19 can control the compressor 12, the valve member 14, and the drain pump 15, and the compressor according to the drain water level (water amount) obtained based on the detection signal from the water level detection means 18. 12, the operation state of the valve member 14 and the drain pump 15 is changed.

Next, the example of the process sequence in which the atomization control apparatus 19 changes the operation state of the compressor 12, the valve member 14, and the drain pump 15 is demonstrated using the flowchart shown in FIG.
The process shown in FIG. 6 is executed by the atomization control device 19 at predetermined time intervals (every several tens [ms] to several hundreds [ms]), for example, but the process timing is not particularly limited.
In step S10, the atomization control device 19 determines whether or not it is a time zone in which drain water can be sprayed. If it is a sprayable time zone (Yes), the process proceeds to step S20, and if it is not a sprayable time zone (No), the process proceeds to step S40B.
For example, the atomization control device 19 has a built-in timer and can detect the time. When the preset time zone is reached, the drain water is automatically sprayed to drain the drain water accumulated in the drain tank 11. For example, drain water is discharged at a time such as midnight when a user of the latent heat recovery hot water system goes to bed.

When it progresses to step S20, the atomization control apparatus 19 determines whether it is spraying drain water now. If the drain water is currently being sprayed (Yes), the process proceeds to step S30A. If the drain water is not currently being sprayed (No), the process proceeds to step S30B.
When the process proceeds to step S30A, the atomization control device 19 determines that the water level (water amount) of the drain water detected based on the detection signal from the water level detection means 18 is the first predetermined height (first predetermined height <second predetermined). It is determined whether or not the height is greater than or equal to. When the detected drain water level is equal to or higher than the first predetermined height (Yes), the process proceeds to step S40A, and when the water level is lower than the first predetermined height (No), the process proceeds to step S40B.
When the process proceeds to step S30B, the atomization control device 19 detects that the water level (water amount) detected based on the detection signal from the water level detection means 18 is the second predetermined height (second predetermined height> first predetermined height). It is determined whether it is above. When the detected drain water level is equal to or higher than the second predetermined height (Yes), the process proceeds to step S40A, and when the water level is lower than the second predetermined height (No), the process proceeds to step S40B.

When progressing to step S40A, the atomization control apparatus 19 operates the valve member 14, the compressor 12, and the drain pump 15, sprays drain water from the nozzle 13, and complete | finishes a process.
When progressing to step S40B, the atomization control apparatus 19 stops the valve member 14, the compressor 12, and the drain pump 15, stops the spray of the drain water from the nozzle 13, and complete | finishes a process.
Moreover, when starting the spraying of drain water, if the operation of the compressor is started from the atomization control device and the operation of the drain pump and the valve member is started after a lapse of a predetermined time, the dripping at the start of spraying can be suppressed. I can expect. Moreover, when the spraying of the drain water is finished, if the operation of the valve member and the drain pump is stopped from the atomization control device and the operation of the compressor is stopped after a predetermined time, the dripping at the end of the spraying can be suppressed. I can expect.

  In addition, when the communication line T1 (or wireless communication line T1) which enables transmission / reception between the atomization control device 19 and the system control device 35 is set and the drain water is sprayed from the atomization device 10E, the atomization control is performed. Information indicating that spraying has been started may be transmitted from the device 19 to the system control device 35, and the air supply fan 34 may be operated by the system control device 35. In this case, if the nozzle 13 is arranged at the exhaust port 30B, the drain water sprayed from the nozzle 13 is discharged by the flow of exhaust from the air supply fan 34 even if the combustion heating means 31 is not operating. Can diffuse more. Moreover, when the combustion heating means 31 and the air supply fan 34 are operating, the drain water sprayed from the nozzle 13 can be further diffused in the flow of combustion exhaust.

In the atomization apparatus according to the sixth embodiment, since the drain water can be appropriately sprayed only when an appropriate amount of drain water to be sprayed is accumulated in the drain tank, a compressor, a drain pump, etc. Useless operation can be eliminated.
Moreover, it is possible to set the drain water discharge time zone freely, and it is convenient because it can be set to automatically discharge drain water at midnight, for example.
In the above description, although the example which added the water level detection means 18 and the atomization control apparatus 19 to the atomization apparatus 10D of 4th Embodiment shown in FIG. 4 was demonstrated, the atomization apparatus of 1st Embodiment is demonstrated. You may add the water level detection means 18 and the atomization control apparatus 19 to each of the atomization apparatus 10C of 10A-3rd Embodiment.

Further, step S10 may be omitted from the flowchart shown in FIG. 6, and the execution or stop of the drain water spray may be controlled according to the water level (water amount) in the drain tank regardless of the time zone.
Further, the steps S20, S30A, S30B and the water level detecting means 18 are omitted from the flowchart shown in FIG. 6, and the drain water is sprayed when the preset time zone is reached regardless of the water level. May be.
Further, the communication line T1 (or the wireless communication line T1) may be omitted, and the drain water may be sprayed without operating the air supply fan 34 at the same time.

[[Latent Heat Recovery Type Hot Water System and Atomization Apparatus of Latent Heat Recovery Type Hot Water System]
The latent heat recovery type hot water system of the sixth embodiment is different from the latent heat recovery type hot water system 1E of the fifth embodiment shown in FIG. 5 in the processing procedure of the atomization control device 19 of the atomization device 10E. This is different from the processing procedure shown in FIG. Hereinafter, this difference will be mainly described.
As shown in FIG. 5, the atomization control device 19 can transmit and receive information to and from each other through the system control device 35 and the communication line T1 (or the wireless communication line T1). The nozzle 13 is disposed in the exhaust port 30B.
The system controller 35 communicates information indicating that the combustion heating means 31 and the air supply fan 34 are in operation while operating the combustion heating means 31 and the air supply fan 34 to operate the latent heat recovery hot water system. It transmits to the atomization control apparatus 19 via line T1 (or wireless communication line T1).

When the atomization control device 19 receives information indicating that the combustion heating means 31 and the air supply fan 34 are in operation, the atomization control device 19 operates the valve member 14, the compressor 12, and the drain pump 15, and supplies drain water from the nozzle 13. Spray.
In this case, since the drain water is sprayed in the flow of the combustion exhaust by the combustion heating means 31 and the air supply fan 34, a part of the drain water is vaporized by the combustion exhaust, and the drain water can be further diffused.
In the fifth and sixth embodiments, the system control device 35 and the atomization control device 19 are described as separate control devices. However, the system control device 35 incorporates the function of the atomization control device 19. The atomization control device 19 may be omitted.
Further, in the first to fourth embodiments, an atomization control device may be added so that drain water is sprayed while the combustion heating means 31 and the air supply fan 34 are in operation, or the atomization is performed. You may make it spray drain water from the system control apparatus during operation of the combustion heating means 31 and the air supply fan 34, without adding a control apparatus.

● [Latent heat recovery type hot water system in the seventh embodiment]
In the first to sixth embodiments described above, the example in which the atomizer is built in the latent heat recovery hot water system has been described.
However, an apparatus corresponding to the atomization apparatus of the first to sixth embodiments described above is added to the latent heat recovery type hot water apparatus that does not include the atomization means for atomizing and discharging the drain water. It is also possible to attach it additionally.
For example, the compressor 12, the nozzle 13, the drain discharge pipe H2, the air pipe H3, the valve member 14, and the drain pump 15 from the latent heat recovery type hot water system of the first to sixth embodiments. Is assumed that the latent heat recovery type hot water apparatus excluding the drain pump 15 and the atomization control device 19 when the atomization control device 19 is included is already installed. In this case, it is assumed that the latent heat recovery type hot water apparatus is not provided with an atomizing means, but is provided with a drain inflow pipe H1, a drain tank 11, a neutralizing device 16, a filtering device 17, and a water level detecting means 18. ing. In addition, the assumed latent heat recovery type hot water apparatus may not include the neutralization device, the filtration device, and the water level detection means.

After the latent heat recovery type hot water apparatus is installed, the compressor 12, the nozzle 13, the drain discharge pipe H2, the air pipe H3, and the valve member 14 with respect to the above-described latent heat recovery type hot water apparatus that does not include the atomizing means. If additionally attached, at least the latent heat recovery type hot water system of the first embodiment shown in FIG. 1 can be configured.
Moreover, with respect to said latent heat recovery type hot water apparatus which is not provided with the atomization means, the compressor 12, the nozzle 13, the drain discharge pipe H2, the air pipe H3, the valve member 14, and the drain pump 15 are replaced with the latent heat recovery type hot water apparatus. If it is added and installed after the installation, at least the latent heat recovery type hot water system of the second embodiment shown in FIG. 2 can be configured.
In addition, the compressor 12, nozzle 13, drain discharge pipe H2, air pipe H3, valve member 14, and atomization control device 19 are connected to the latent heat recovery type in contrast to the above-described latent heat recovery type hot water apparatus that does not include atomization means. If the hot water device is additionally installed after the hot water device is installed, at least a latent heat recovery type hot water system in which the atomization control device 19 is added to the latent heat recovery type hot water system of the first embodiment shown in FIG. 1 can be configured. it can.
Further, the compressor 12, nozzle 13, drain discharge pipe H2, air pipe H3, valve member 14, drain pump 15, and atomization control device 19 are provided for the above-described latent heat recovery type hot water apparatus not provided with an atomizing means. If the latent heat recovery type hot water device is additionally installed after installation, a latent heat recovery type hot water system in which an atomization control device 19 is added to at least the latent heat recovery type hot water system of the second embodiment shown in FIG. Can be configured.
In addition, when the atomization control device 19 is additionally attached to the above-described latent heat recovery type hot water device not provided with the atomizing means, the system control device 35 provided in advance in the latent heat recovery type hot water device, and It is preferable that the atomization control device 19 added later is connected to the communication line T1 (or the wireless communication line T1) so that information can be transmitted and received between them.

The atomizing device of the latent heat recovery type hot water system and the latent heat recovery type hot water system of the present invention are not limited to the appearance, configuration, structure, operation, etc. described in the present embodiment, and are within the scope not changing the gist of the present invention. Various changes, additions and deletions are possible.
Further, the above (≧), the following (≦), the greater (>), the less (<), etc. may or may not include an equal sign.
The numerical values used in the description of the present embodiment are examples, and are not limited to these numerical values.

1A to 1E Latent heat recovery type hot water system 10A to 10E Atomizer 11 Drain tank 12 Compressor 13 Nozzle (2 fluid nozzle)
DESCRIPTION OF SYMBOLS 14 Valve member 15 Drain pump 16 Neutralization device 16A Neutralizing agent 17 Filtration device 18 Water level detection means 19 Atomization control device 31 Combustion heating means 32 Main heat exchanger 33 Latent heat recovery heat exchanger 34 Air supply fan 35 System control device DR Drain water F1 Fuel piping H1 Drain inflow piping H2 Drain discharge piping H3 Air piping T1 Communication line W1 Hot water piping

Claims (10)

In the atomization device of the latent heat recovery type hot water system, the drain water generated in the latent heat recovery type heat exchanger of the latent heat recovery type hot water system is atomized and discharged from the latent heat recovery type hot water system.
A drain tank for storing drain water,
A compressor capable of generating compressed air;
A nozzle capable of simultaneously discharging two types of fluid from the discharge port;
A drain inflow pipe for leading drain water generated in the latent heat recovery heat exchanger to the drain tank;
A drain discharge pipe for leading drain water in the drain tank to the nozzle;
An air pipe for guiding the compressed air generated by the compressor to the nozzle;
A valve member provided at any position in the drain discharge pipe,
Spraying drain water guided to the nozzle via the drain discharge pipe using compressed air discharged from the nozzle,
Atomizer for latent heat recovery hot water system. An atomization device for a latent heat recovery hot water system according to claim 1,
A drain pump capable of pumping the drain water in the drain tank toward the nozzle is provided at any position between the valve member and the drain tank in the drain discharge pipe.
Atomizer for latent heat recovery hot water system. An atomization device for a latent heat recovery hot water system according to claim 1 or 2,
Water level detection means capable of detecting the level of drain water in the drain tank;
An atomization control device that controls the compressor and the valve member, or the compressor, the valve member, and the drain pump;
The atomization control device is configured to operate the compressor and the valve member, or the compressor, the valve member, and the drain according to a drain water level detected based on a detection signal from the water level detection unit. Change the operating state of the pump,
Atomizer for latent heat recovery hot water system. An atomization device for a latent heat recovery hot water system according to claim 3,
The atomization control device can detect the time, and according to a preset time zone, the operating state of the compressor and the valve member, or the operating state of the compressor, the valve member, and the drain pump Change,
Atomizer for latent heat recovery hot water system. It is an atomization apparatus of the latent heat recovery type hot water system according to any one of claims 1 to 4,
A neutralization device for neutralizing the drain water passing therethrough is provided at any position in the drain inflow pipe.
Atomizer for latent heat recovery hot water system. It is an atomization apparatus of the latent heat recovery type hot water system according to any one of claims 1 to 5,
At least one of the drain tank, or the drain tank or the neutralization device is provided with a filtration device for filtering the drain water passing therethrough,
Atomizer for latent heat recovery hot water system. Combustion heating means for burning fuel;
A main heat exchanger that heats feed water using heat generated by the combustion heating means;
An air supply fan for supplying combustion air to the combustion heating means;
The latent heat recovery heat exchanger that preheats feed water using heat of combustion exhaust gas by the combustion heating means,
The atomization device of the latent heat recovery hot water system according to any one of claims 1 to 6, wherein the atomization device is incorporated in advance.
Latent heat recovery type hot water system. If the compressor, the nozzle, the drain discharge pipe, the air pipe, the valve member, and the drain pump are included from the latent heat recovery hot water system according to claim 7, the drain pump And when the atomization control device is included, the atomization control device, and for the latent heat recovery type hot water device in a state excluding the state,
The compressor, the nozzle, the drain discharge pipe, the air pipe, and the valve member;
Or, the compressor, the nozzle, the drain discharge pipe, the air pipe, the valve member, and the drain pump,
Alternatively, the compressor, the nozzle, the drain discharge pipe, the air pipe, the valve member, and the atomization control device,
Or, the compressor, the nozzle, the drain discharge pipe, the air pipe, the valve member, the drain pump, and the atomization control device,
Is added and installed after the latent heat recovery type hot water device is installed,
Latent heat recovery type hot water system. The latent heat recovery hot water system according to claim 7 or 8,
The nozzle is disposed at an exhaust port of the latent heat recovery hot water system,
Operating the air supply fan when spraying the drain water from the nozzle;
Latent heat recovery type hot water system. The latent heat recovery hot water system according to any one of claims 7 to 9,
The nozzle is disposed at an exhaust port of the latent heat recovery hot water system,
Spraying the drain water from the nozzle when the combustion heating means is operating;
Latent heat recovery type hot water system.

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