JP4874666B2 - Combustion equipment - Google Patents

Description

  The present invention relates to a combustion apparatus of a latent heat recovery type that is compact and has improved thermal efficiency.

A type of water heater with a memorial function, which is installed mainly in an apartment building and is installed next to the bathtub, the balance-type bath pot (hereinafter referred to as “BF kettle”) requires installation space in the bathroom. The bathtub space is narrowed accordingly. For this reason, by replacing all the functions of the BF kettle to the supply / exhaust tube installation part of the BF kettle opened on the wall surface of the BF kettle as a replacement for this BF kettle, Bathroom remodeling products that can make the bathtub large are being developed. Such a bath tub is said to be a wall-penetrating water heater with a memorial function (hereinafter referred to as a “wall-through tub”).

  FIG. 15 shows a first example of a conventional wall penetration hook. The wall penetrating pot main body 1 is largely limited by the dimensions of the main body due to the uniqueness of the installation form as described above. For this reason, both the hot water supply and the recuperation are supplied with air by the common blower fan 2, and the exhaust gas that has passed through the hot water supply heat exchanger 5 and the regenerative heat exchanger 7 is also supplied to the exhaust chamber 8 as an integrated exhaust chamber. The wall penetration hook body 1 is made compact by exhausting at 8 (Patent Document 1).

  FIG. 16 is a perspective view of such an integrated exhaust chamber 8, and FIG. When the hot water supply combustion unit 4 is burned alone, the exhaust gas having a maximum of about 200 ° C. that has passed through the hot water supply heat exchanger 5 and the cold outside air (air) that has passed through the additional heat exchanger 7 are contained in the exhaust chamber 8. Since the heat is mixed and radiated, the exhaust gas temperature near the exhaust port 39 decreases. Further, the temperature drop becomes more prominent as the exhaust gas temperature becomes lower. Furthermore, the same phenomenon occurs when the memory combustion unit 6 is burned alone.

  FIG. 18 shows a second example of a conventional wall penetration hook. One combustion unit 20 serves as both a hot water supply combustion unit and a supplementary combustion unit, and has a hot water supply function and a supplementary function. Therefore, the blower fan 2, the combustion part 20, the secondary heat exchanger 9, and the exhaust chamber 8 are all configured to be one.

In FIG. 18, first, in the hot water supply operation, water is heated by the latent heat recovery using the secondary heat exchanger 9 by the heat of the exhaust gas, and then the hot water supply heat exchanger 5 by the combustion heat of the combustion unit 20. After being heated using, it flows to a hot water tap. Further, the exhaust gas is opposite to the flow of water, and the exhaust gas generated in the combustion unit 20 first heats the hot water supply heat exchanger 5 and then heats the secondary heat exchanger 9 via the exhaust chamber 8. After that, it is exhausted.
Moreover, at the time of a chasing operation, water flows into a bathtub, after being heated using the chasing heat exchanger 7 by the combustion heat of the combustion part 20. That is, the secondary heat exchanger 9 is not used. On the other hand, as described above, since the blower fan 2, the combustion unit 20, the secondary heat exchanger 9, and the exhaust chamber 8 are all one, the flow of exhaust gas during the chasing operation is the same as that during the hot water supply operation. Same as exhaust gas flow.
JP 2005-321165 A

First, as in the first example (FIG. 15) of the conventional wall-through hook, the common blower fan 2 simultaneously blows air to the hot water supply heat exchanger 5 and the additional heat exchanger 7 and is an integrated exhaust chamber. When the secondary heat exchanger 9 for recovering latent heat is installed outside the exhaust chamber 8 in the hot water heater with a tracking function having 8, heat is released until the exhaust gas reaches the secondary heat exchanger 9. Since it is large, sufficient latent heat cannot be obtained due to a decrease in exhaust gas temperature, and the efficiency as the secondary heat exchanger 9 may not be sufficient.
In addition, even when the combustion combustion section 6 is operated alone, the exhaust gas always passes through the secondary heat exchanger 9, so that the residual heat in the secondary heat exchanger 9 is not obtained even though latent heat recovery is not performed. Water will be heated. For this reason, when performing hot water supply operation after that, in order to perform secondary heat exchange, control of tapping temperature may be difficult by the heated remaining water in the secondary heat exchanger 9.

  Next, as in the second example of the conventional wall penetration hook (FIG. 18), one combustion section 20 serves as both a hot water supply combustion section and an additional combustion combustion section, and has a hot water supply function and an additional correction function. In such a case, even when only the chasing operation is performed, the secondary heat exchanger 9 that is not used is also heated, and if there is residual water in the secondary heat exchanger 9, it is heated. For this reason, when performing hot water supply operation after that, in order to perform secondary heat exchange, it is necessary to wait for the heated residual water to cool or to drain it in order to prevent abnormalities in the hot water supply temperature. There are problems such as complicated control and poor usability.

  Further, in both the first example (FIG. 15) and the second example (FIG. 18) of the conventional wall-through hook, the secondary heat exchanger 9 is connected to the exhaust chamber due to the size limitation of the wall-through hook body 1. 8 When it is going to install inside, since it is necessary to provide the drain pan for the fall prevention of condensed water to the lower side of the secondary heat exchanger 9, it is to the secondary heat exchanger 9 by this drain pan. In some cases, the inflow port of the exhaust gas is blocked, the pressure loss of the exhaust gas increases, and it is difficult to ensure the combustion performance.

  The present invention has been made in order to solve the above-described problems, and suppresses a decrease in exhaust gas temperature due to heat dissipation inside the exhaust chamber 8 while complying with the restrictions on the dimensions of the wall penetration pot main body 1 and is highly efficient. An object is to provide a combustion device having a secondary heat exchanger 9. In addition, due to the restrictions on the dimensions of the wall penetration pot main body 1, even when the secondary heat exchanger 9 is installed inside the exhaust chamber 8, it is possible to provide a combustion device having the exhaust chamber 8 in which exhaust pressure loss is reduced. Objective. Furthermore, it is an object of the present invention to provide an easy-to-use hot water supply apparatus that eliminates heating of the secondary heat exchanger 9 by exhaust gas and does not cause an abnormality in the temperature of the hot water, even when performing a chase operation alone. .

The present invention relates to the following.
(1) A combustion unit, a fan that blows air to the combustion unit, a primary heat exchanger that recovers combustion heat of the combustion unit, and a secondary heat exchanger that recovers latent heat from exhaust gas from the primary heat exchanger In a combustion device having functions of hot water supply operation and reheating operation, a reheating heat exchanger, a hot water supply heat exchanger, and a fan that simultaneously blows air to the reheating heat exchanger and the hot water supply heat exchanger, The exhaust gas that has passed through the memory heat exchanger and the exhaust gas that has passed through the hot water supply heat exchanger are exhausted through independent flow paths, and the exhaust gas that has passed through the hot water supply heat exchanger is subjected to secondary heat exchange. Combustion equipment in which the combustion air that has flowed into the vessel and passed through the additional heat exchanger passes between the secondary heat exchanger and the additional heat exchanger .
(2) of the exhaust gas when performing Oite in (1), the add-fired operation alone is burning appliance not flow into the secondary heat exchanger.
( 3 ) Combustion equipment in which the exhaust gas that has passed through the hot water supply heat exchanger in the item ( 1 ) or ( 2 ) flows into the secondary heat exchanger.
( 4 ) The combustion device in which the independent flow path is formed by a partition wall in the item ( 2 ) or the item ( 3 ).
( 5 ) The combustion device according to item ( 4 ), wherein the partition wall section is substantially Z-shaped.
( 6 ) The combustion apparatus according to any one of items (1) to (5), wherein the exhaust gas that has passed through the hot water supply heat exchanger passes between the secondary heat exchanger and the exhaust side exhaust chamber.
( 7 ) The combustion apparatus according to any one of items (1) to ( 6 ), wherein the exhaust deflection plate is provided in the exhaust gas flow path in the secondary heat exchanger.

  According to the present invention, a combustion apparatus having a high-efficiency secondary heat exchanger 9 that suppresses a decrease in the exhaust gas temperature due to heat dissipation inside the exhaust chamber 8 while complying with the restrictions on the dimensions of the wall penetration pot main body 1. Can be provided. Also, a combustion device having an exhaust chamber 8 that reduces exhaust pressure loss even when the secondary heat exchanger 9 is installed inside the exhaust chamber 8 due to the dimensional limitation of the wall penetration pot main body 1 is provided. Is possible. Furthermore, even when performing the renewal operation alone, it is possible to provide an easy-to-use hot water supply apparatus that eliminates heating of the secondary heat exchanger 9 by exhaust gas and does not cause an abnormality in the tapping temperature. .

  The combustion device that is the subject of the present invention is a latent heat recovery type hot water supply device with a tracking function. In particular, a hot water heater with a memorial function with a large dimensional constraint such as a wall penetration pot is desirable. In the case of such a hot water heater with a memorial function with large dimensional constraints, as described above, there is a problem that the thermal efficiency of the secondary heat exchanger 9 is likely to be lowered, and thus the effect of the present invention is more significant. Can demonstrate.

  FIG. 2 is a front view of an example of the wall penetration hook body 1 of the present invention, and FIG. 3 is a side view thereof. FIG. 4 is an installation example of a bathroom unit in which the wall penetration pot main body 1 of the present invention is installed in a bathroom, and shows a perspective view seen from the short side of the bathtub 37. Since the supply / exhaust tube installation portion of the BF kettle is installed inside a specified through hole existing in the bathroom wall 36, the wall through kettle body 1 as an alternative is restricted by the size of the through hole.

  In FIG. 5, an example of the block diagram of the wall penetration hook of this invention is shown. FIG. 5 shows the case where the hot water supply combustion unit 4 and the additional combustion unit 6 are provided. However, as shown in FIG. 14, the single hot unit 20 serves as both the hot water supply combustion unit and the additional combustion unit. May be.

  First, the wall penetration hook having the configuration shown in FIG. 5 will be described as an example.

  In the case of a wall penetration hook, it is essential to make the main body compact because it is necessary to transfer all the functions of the BF hook into the through hole. In order to achieve compactness, as shown in FIG. 5, the blower fan 2 that blows air to the hot water supply combustion unit 4 and the additional combustion unit 6 is made common, and the hot water supply combustion unit 4 and the additional combustion unit 6 are simultaneously used. It is the structure which ventilates.

In the case where the hot water supply combustion unit 4 is operated alone, the exhaust gas supplied from the fan 2 and the exhaust gas supplied through the hot water supply electromagnetic valve 3 is exhausted at about 1000 ° C. or more by the hot water supply combustion unit 4. And the sensible heat is recovered to about 200 ° C. in the hot water supply heat exchanger 5. Thereafter, the exhaust gas reaches the exhaust chamber 8.
At the same time, air (outside air) is supplied from the fan 2 to the remedy combustion unit 6 in the same manner as the hot water supply combustion unit 4, and this air passes through the remedy heat exchanger 7 as it is and is in the exhaust chamber 8. It reaches.

The exhaust chamber 8 is not particularly limited as long as the exhaust gas from the hot water combustion unit 4 and the exhaust gas from the additional combustion unit 6 do not mix and can be exhausted independently. However, due to dimensional constraints, it is desirable that the single exhaust chamber 8 is divided into a hot water supply side exhaust chamber 10 and a tracking side exhaust chamber 11 as shown in FIG. 6 or FIG.
This is advantageous in that the exhaust chamber 8 can be made more compact and the exhaust area can be increased compared to a method in which the exhaust chamber 8 is separately disposed on the hot water supply heat exchanger 5 and the reheating heat exchanger 7.

  The internal structure of the exhaust chamber 8 is not limited as long as it satisfies the dimensional restrictions and the exhaust gas from the hot water combustion unit 4 and the exhaust combustion unit 6 does not mix. 6 and 10 are perspective views showing an example of the internal structure of the exhaust chamber 8, FIGS. 7 and 11 are CC sectional views of these, FIG. 8 and FIG. 12 are these BB sectional views, FIG. FIG. 13 is a sectional view taken along the line AA.

  The arrangement of the secondary heat exchanger 9 may be provided outside the hot water supply exhaust port 30 of the exhaust chamber 8. However, in order to cope with downsizing and the distance from the hot water supply combustion unit 4 is shortened, the exhaust gas As shown in FIG. 5, it is desirable to dispose in the exhaust chamber 8 in order to suppress the heat dissipation.

  Further, as shown in FIG. 5, the secondary heat exchanger 9 is preferably provided in the upper part with the exhaust chamber 8 divided into upper and lower parts. Further, a hot water supply side exhaust chamber 10 which is an exhaust passage from the hot water supply heat exchanger 5 to the secondary heat exchanger 9 and a retreat side exhaust chamber 11 which is a retreat exhaust passage from the retreat heat exchanger 7 are: It is desirable to divide the exhaust chamber 8 into upper and lower parts and to provide it below. As a result, as shown in FIG. 5, the exhaust chamber 8 becomes horizontally long and the secondary heat exchanger 9 can be placed in the horizontal direction, so that the secondary heat exchanger 9 can be enlarged even under restricted dimensions. can do.

  As shown in FIGS. 6 and 8, the secondary heat exchanger inlet 17 is preferably provided on the lower exhaust chamber ceiling surface 13 above the hot water supply side exhaust chamber 10. Thereby, the flow path of the exhaust gas from the hot water supply heat exchanger 5 to the secondary heat exchanger 9 is formed. Further, as shown in FIGS. 10 and 12, it is desirable to expand the hot water supply side exhaust chamber 10 to the upper part of the tracking side exhaust chamber 11. In this case, since the size of the secondary heat exchanger inlet 17 is increased correspondingly, the pressure loss of the exhaust gas flowing into the secondary heat exchanger 9 is reduced, and the flow of the exhaust gas is in the width direction. Becomes more uniform. Furthermore, since the length (L) of the secondary heat exchanger inlet 17 can be shortened as much as the pressure loss is reduced, the secondary heat exchanger 9 can be made larger and the heat exchange efficiency is improved.

  It is desirable to reduce the height of the hot water supply side exhaust chamber 10 and the additional exhaust side exhaust chamber 11 in the exhaust chamber 8, and further the height of the hot water supply heat exchanger 5 and the additional heat exchanger 7, as much as possible. Thereby, it is possible to cope with a dimensional constraint that the height of the wall penetration pot main body 1 cannot be increased.

  As shown in FIG. 5, in the secondary heat exchanger 9 in the exhaust chamber 8, since the drain water 40 of strong acid is generated, as shown in FIGS. 8, 9, 12, and 13, the secondary heat exchanger At the bottom of 9, a drain tray 12 having a gradient for receiving the drain water 40 and flowing it to the drain outlet is required. In order to reduce the number of parts, a structure in which the bottom surface of the secondary heat exchanger 9 is sloped to form a drain tray 12 is desirable.

  As shown in FIGS. 8, 9, 12, and 13, the lower exhaust chamber ceiling surface 13 is preferably matched to the gradient of the secondary heat exchanger 9. Thereby, the sloped bottom surface of the secondary heat exchanger 9 also serving as the drain tray 12 can be used as the lower exhaust chamber ceiling surface 13, and the number of parts can be reduced.

  As shown in FIGS. 6 and 10, the structure of the hot water supply side exhaust chamber 10 and the additional exhaust side exhaust chamber 11 includes the exhaust gas that has passed through the hot water supply heat exchanger 5 and the exhaust gas that has passed through the additional heat exchanger 7. In order not to mix, the flow paths are mutually independent.

  The method of making the independent flow path is not limited as long as the exhaust gas from the hot water supply heat exchanger 5 and the exhaust gas from the additional heat exchanger 7 are not mixed, but FIG. 6 and FIG. Alternatively, as shown in FIGS. 10 and 11, the hot water supply side exhaust chamber 10 and the remedy side exhaust chamber 11 are made independent of each other by a single partition wall 15, 18. The structure to be made is desirable. Thus, since the integral exhaust chamber 8 is only divided by the partition walls 15 and 18, an independent flow path can be obtained with a compact and simple structure.

  As shown in FIGS. 6 and 7, the partition walls 15 and 18 are preferably Z-shaped partition walls 15 having a cross section that matches the gradient of the exhaust chamber ceiling surface 13. Thus, the exhaust chamber 8 can be made independent of each of the hot water supply side exhaust chamber 10 and the tracking side exhaust chamber 11 with one component.

  Further, as shown in FIGS. 10 and 11, the partition walls 15 and 18 are constituted by a convex partition wall 18 having a convex section and a convex partition ceiling surface 19, and the convex partition ceiling surface 19 is horizontal or lower. It is more desirable that the gradient be opposite to the gradient of the exhaust chamber ceiling surface 13. As a result, as shown in FIG. 11, the hot water supply side exhaust chamber 10 is also formed on the retreat side exhaust chamber 11, so that the secondary heat exchanger inlet 17 is enlarged as shown in FIG. 10. be able to. For this reason, the pressure loss of exhaust gas can be reduced. Further, as shown in FIG. 13, the exhaust gas flowing through the exhaust side exhaust chamber 11 is horizontal or upwardly inclined with respect to the flow direction of the exhaust gas. Loss can be reduced.

  Furthermore, in the upper exhaust chamber having the secondary heat exchanger 9 as shown in FIGS. 8 and 12, the secondary heat exchanger is provided with an exhaust rectifying plate 21 for efficiently bringing the exhaust gas into contact with the water pipe. It is desirable to increase the heat transfer efficiency at 9.

  The fixing method of the substantially Z-shaped partition wall 15 and the convex partition wall 18 is not particularly limited, and screwing, welding, and other methods can be used, and from the compatibility with the secondary heat exchanger 9 and airtightness. Welding is desirable.

  As shown in FIGS. 7 and 11, the lower exhaust chamber ceiling surface 13 is preferably integrated from the upper part of the hot water supply heat exchanger 5 to the upper part of the heat exchanger 7. Thereby, it becomes possible to extend the secondary heat exchanger 9 to the side of the heat exchanger 7 and an increase in heat transfer efficiency in the secondary heat exchanger 9 is expected.

By using the combustion apparatus according to the present invention, the combustion air blown to the hot water supply combustion unit 4 by the blower fan 2 is the exhaust gas when the hot water supply combustion unit 4 is operated alone. Thus, after passing through the hot water supply heat exchanger 5 and the hot water supply side exhaust chamber 10, it is guided to the secondary heat exchanger 9. On the other hand, the air blown to the remedy combustion section 6 simultaneously passes through the remedy heat exchanger 7 and the remedy side exhaust chamber 11 and is then discharged to the outside as it is and does not come into contact with the secondary heat exchanger 9. Become. For this reason, the exhaust gas that has passed through the hot water supply heat exchanger 5 and the combustion air that has passed through the additional heat exchanger 7 are not mixed in the exhaust chamber 8.
In addition, even when the pursuit operation is performed independently, the combustion air blown to the combustor combustion unit 6 becomes exhaust gas and passes through the heat exchanger 7 and the exhaust side exhaust chamber 11 and then directly outside. And is not in contact with the secondary heat exchanger 9. For this reason, even if there is residual water in the secondary heat exchanger 9, the residual water is not heated. Therefore, even when the hot water supply operation is performed thereafter, the hot water temperature does not become abnormally high, and it is possible to provide a hot water supply device that is easy to control and easy to use.

  Next, the wall penetration hook having the configuration shown in FIG. 14 will be described as an example.

  As in the case of the configuration of FIG. 5, the exhaust chamber 8 divides the exhaust chamber 8 vertically into two parts, a secondary heat exchanger 9 is attached to the upper part, and a hot water supply side exhaust room 10 and a memorial side exhaust room 11 are attached to the lower part. And a structure in which the bottom surface of the secondary heat exchanger 9 is inclined to form a drain tray 12 is desirable. Further, it is desirable to provide the secondary heat exchanger inlet 17 on the ceiling surface 13 of the lower exhaust chamber. Thereby, the flow path of the exhaust gas which leads from the exhaust gas flow path to the secondary heat exchanger 9 through the secondary heat exchanger inlet 17 can be formed.

  On the other hand, in the case of the wall-through hook configured as shown in FIG. 14, one combustion unit 20 serves as both the hot water supply combustion unit 4 and the additional combustion unit 6, and has a hot water supply function and an additional correction function. For this reason, there is originally only one exhaust gas flow path, and as in the case of the wall-through hook configured as shown in FIG. It is difficult to separate exhaust gas during operation into independent flow paths.

For this reason, there is no particular limitation on the method, but the exhaust gas when performing the chase operation alone is different from that when performing the hot water supply operation alone and when performing both the hot water supply operation and the chase operation. In order to form a path, for example, the following method can be considered. That is, the damper 35 is provided at the secondary heat exchanger inlet 17, and the damper 35 is closed so that the exhaust gas is not introduced into the secondary heat exchanger 9 only when the tracking operation is performed independently. In some cases, the damper 35 may be opened to introduce exhaust gas into the secondary heat exchanger 9.
Thereby, when performing a chase operation independently, the secondary heat exchanger 9 which is not used is not heated abnormally, and even if there is residual water, it is not heated. For this reason, when performing the hot water supply operation which uses the secondary heat exchanger 9 after that, the operation which waits for the heated residual water to cool down or drains becomes unnecessary. Therefore, the complexity of the control is eliminated and the usability is improved.
The damper 35 is desirably provided with a mechanism for detecting and opening the temperature of the exhaust gas. For example, a method using a shape memory alloy that stores a shape corresponding to the temperature is conceivable. Thereby, the control which opens and closes the damper 35 becomes easy.

  FIG. 5 is a configuration diagram of the wall penetration hook main body 1 according to the first embodiment of the present invention, FIG. 6 is a perspective view of the exhaust chamber 8, FIG. 7 is a cross-sectional view of the exhaust chamber 8 along C-C, and FIG. 8 is a sectional view taken along line BB, and FIG. 9 is a sectional view taken along line AA of the exhaust chamber 8.

  In order to reduce the size, the fan 2 that blows air to the hot water supply combustion unit 4 and the additional combustion unit 6 is made common, and is configured to simultaneously blow air to both the combustion units. Even when the hot water combustion unit 4 is operated alone, air (outside air) is supplied from the fan to the additional combustion unit 6 in the same manner as the hot water combustion unit 4, and this air passes through the additional heat exchanger 7 and is exhausted. It reaches room 8.

  The arrangement of the secondary heat exchanger 9 is difficult to increase the main body height due to dimensional constraints, and in order to suppress the heat radiation of the exhaust gas from the hot water supply heat exchanger 5 as much as possible, the exhaust chamber 8 Arranged at the top inside. As a result, the height of the exhaust chamber 8 and the height of the hot water supply heat exchanger 5 and the additional heat exchanger 7 could be reduced by the height of the secondary heat exchanger 9.

  Further, as shown in FIG. 5, since the drain water 40 of strong acid is generated at the lower part of the secondary heat exchanger 9, the drain heat is received as the drain pan 12 having a gradient to flow into the drain outlet. The bottom surface of the exchanger 9 has a gradient. This gradient was about 3 ° due to drainage.

  The exhaust chamber 8 is an integrated exhaust chamber in which there is no distinction between hot water supply and retreat on the lower exhaust chamber ceiling surface 13 and the lower exhaust chamber rear surface 14, and the lower exhaust chamber ceiling surface 13 is the same as the bottom surface of the secondary heat exchanger 9. Provide a gradient and contact.

  Further, as shown in FIGS. 6 and 7, the exhaust gas that has passed through the hot water supply heat exchanger 5 and the exhaust gas that has passed through the additional heat exchanger 7 are not mixed. The exhaust gas flow path is made independent by one cross-sectional substantially Z-shaped partition 15. At this time, the upper surface of the substantially Z-shaped partition wall 15 and the exhaust chamber ceiling surface 13 are fixed by spot welding. The fixing of the lower surface of the substantially Z-shaped partition wall 15 and the exhaust chamber bottom surface 16 is the same.

  As a result, the hot water supply side exhaust chamber 10 and the tracking side exhaust chamber 11 can be made independent of each other in the exhaust chamber 8 with a single component. In addition, since the lower exhaust chamber ceiling surface 13 is integrated from the hot water supply side exhaust chamber 10 to the remedy side exhaust chamber 11, the secondary heat exchanger 9 can be expanded to the remedy heat exchanger 7 side, and the heat transfer efficiency is improved. We are trying to increase.

  The inlet 17 to the secondary heat exchanger 9 is provided on the hot water supply side from the upper surface of the substantially Z-shaped partition wall 15 in cross section of the exhaust chamber ceiling surface 13. As a result, the exhaust side exhaust chamber 11 is located between the secondary heat exchanger 9 and the additional heat exchanger 7, and when the additional combustion unit 6 is operated alone, the combustion air is in this flow path. Passes through (remembrance side exhaust chamber 11). Furthermore, the heat transfer efficiency in the secondary heat exchanger 9 is increased by providing an exhaust rectifying plate 21 that efficiently brings the exhaust gas into contact with the water pipe inside the secondary heat exchanger 9.

  Hereinafter, operation | movement of the combustion apparatus of Example 1 of this invention is demonstrated using FIG.

  The wall penetration hook main body 1 is supplied with water from a water supply pipe connecting portion 22, and the water supply pipe connecting portion 22 is connected to a water amount sensor 23 for detecting the amount of supplied water. The water amount sensor 23 is connected by piping to the secondary heat exchanger 9 which is a latent heat recovery unit, and further connected to the hot water supply heat exchanger 5 which recovers sensible heat of the combustion exhaust gas from the secondary heat exchanger 9.

  The outlet of the hot water supply heat exchanger 5 is branched in two directions, one is connected to a hot water supply pipe connection 24 for supplying hot water into the bathroom, and the other is connected to a hot water solenoid valve 25 for filling hot water in the bathtub 37. Connected.

  The outlet of the pouring electromagnetic valve 25 is branched in two directions, one being connected to the inlet to the reheating heat exchanger 7 for boiling the bath water, and the other connected to the retreating piping 26.

  The outlet of the recuperation heat exchanger 7 is connected to a circulation pump 27 for circulating bath water, and the circulation pump 27 is connected to a retrace return pipe connection portion 28.

  In the hot water supply combustion, the fuel gas supplied from the gas pipe connection portion 29 is supplied to the hot water supply combustion portion 4 through the hot water supply electromagnetic valve 3 and burned to generate high-temperature exhaust gas. The exhaust gas passes through the hot water supply heat exchanger 5, further passes through the secondary heat exchanger 9, and is exhausted from the hot water supply exhaust port 30 to the outside of the appliance.

  At this time, since the temperature of the exhaust gas passing through the secondary heat exchanger 9 is as low as about 200 ° C., condensed water is generated in the secondary heat exchanger 9. Since the condensed water is strongly acidic at about PH2, it must be recovered, neutralized and discharged. Condensed water generated in the secondary heat exchanger 9 is dropped and collected in a drain tray 12 for collecting it, which becomes drain water 40 and flows into the drain pipe 31 to connect the drain pipe connection portion 32. It flows into the inlet part of the neutralization container 34 filled with the calcium carbonate 33. The drain water 40 neutralized in the neutralization vessel 34 is discharged from the outlet of the neutralization vessel 34 to about PH7.

  The block diagram of the wall penetration hook main body 1 of Example 2 of this invention is the same as that of Example 1, and is shown in FIG. 10 is a perspective view of the exhaust chamber 8, FIG. 11 is a cross-sectional view of the exhaust chamber 8 taken along the line CC, FIG. 12 is a cross-sectional view of the exhaust chamber 8 along the line BB, and FIG. The figure is shown.

  The exhaust chamber 8 is an integrated exhaust chamber 8 in which there is no distinction between the hot water supply side exhaust chamber 10 and the additional exhaust side exhaust chamber 11 on the lower exhaust chamber ceiling surface 13 and the lower exhaust chamber rear surface 14. Provide the same gradient as the bottom surface of the secondary heat exchanger 9 to make contact. Further, in order not to mix the exhaust gas that has passed through the hot water supply heat exchanger 5 and the exhaust gas that has passed through the additional heat exchanger 7, the hot water supply side exhaust chamber 10 and the additional exhaust side exhaust chamber 11 are divided by the convex partition 18. The flow paths of the exhaust gas from the hot water supply heat exchanger 5 and the exhaust gas from the additional heat exchanger 7 are made independent. As shown in FIG. 12, the convex partition ceiling surface 19 at this time was horizontal. The convex partition 18 and the exhaust chamber bottom surface 16 were fixed by spot welding. Other configurations are the same as those of the first embodiment.

  As a result, as shown in FIG. 11, the exhaust gas that has passed through the hot water supply heat exchanger 5 can pass through the upper part of the ceiling surface 19 of the partition wall 18. Therefore, as shown in FIG. The width (W) of 17 can be expanded to the upper part of the exhaust side exhaust chamber 11, and the pressure loss of the exhaust gas is reduced.

The operation | movement of the wall penetration hook of Example 1 of this invention is shown. The front view of the wall penetration pot main body of Example 1 of this invention is shown. The side view of the wall penetration pot main body of Example 1 of this invention is shown. It is the example of installation of the bathroom which installed the wall penetration kettle body of Example 1 of the present invention in the bathroom, and shows the perspective view seen from the bathtub short side. The block diagram of the wall penetration hook main body of Example 1 of this invention is shown. The perspective view of the exhaust chamber used for Example 1 of this invention is shown. The CC sectional drawing of the exhaust chamber used for Example 1 of this invention is shown. The BB sectional view of the exhaust room used for Example 1 of the present invention is shown. The AA sectional view of the exhaust room used for Example 1 of the present invention is shown. The perspective view of the exhaust chamber used for Example 2 of this invention is shown. Sectional drawing CC of the exhaust chamber used for Example 2 of this invention is shown. The BB sectional view of the exhaust room used for Example 2 of the present invention is shown. The AA sectional view of the exhaust room used for Example 2 of the present invention is shown. An example of the block diagram of the wall penetration pot main body of this invention is shown. The block diagram of the 1st example of the conventional wall penetration hook main body is shown. The perspective view of the exhaust chamber of the conventional wall penetration pot main body is shown. Sectional drawing of the exhaust chamber of the conventional wall penetration pot main body is shown. The block diagram of the 2nd example of the conventional wall penetration hook main body is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wall penetration main body 2 ... Blower fan 3 ... Hot water supply solenoid valve 4 ... Hot water supply combustion part 5 ... Hot water supply heat exchanger 6 ... Remembrance combustion part 7 ... Remembrance heat exchanger 8 ... Exhaust chamber 9 ... Secondary heat exchanger DESCRIPTION OF SYMBOLS 10 ... Hot water supply side exhaust chamber 11 ... Remembrance side exhaust chamber 12 ... Drain tray 13 ... Lower exhaust chamber ceiling surface 14 ... Lower exhaust chamber rear surface 15 ... Substantially Z-shaped partition 16 ... Exhaust chamber bottom surface 17 ... Secondary heat exchanger inlet DESCRIPTION OF SYMBOLS 18 ... Convex-shaped partition wall 19 ... Convex-shaped partition ceiling surface 20 ... Combustion part 21 ... Exhaust flow straightening plate 22 ... Water supply pipe connection part 23 ... Water quantity sensor 24 ... Hot water supply pipe connection part 25 ... Hot water supply solenoid valve 26 ... Remaining delivery pipe 27 ... circulation pump 28 ... return return pipe connection part 29 ... gas pipe connection part 30 ... hot water supply exhaust port 31 ... drain pipe 32 ... drain pipe connection part 33 ... calcium carbonate 34 ... neutralization container 35 ... damper 36 ... bathroom wall 37 ... Bathtub 38 ... Intake port 39 ... Exhaust port 40 ... Drain water

Claims (7)

A combustion section, a fan that blows air to the combustion section, a primary heat exchanger that recovers the combustion heat of the combustion section, and a secondary heat exchanger that recovers latent heat from the exhaust gas from the primary heat exchanger In the combustion equipment having the functions of hot water supply operation and memorial operation,
A reheating heat exchanger, a hot water supply heat exchanger, a fan that simultaneously blows air to the reheating heat exchanger and the hot water heat exchanger, exhaust gas that has passed through the reheating heat exchanger, and a hot water heat exchanger It is configured to exhaust the exhaust gas that has passed through an independent flow path,
The exhaust gas that has passed through the hot water heat exchanger flows into the secondary heat exchanger, and the combustion air that has passed through the additional heat exchanger passes between the secondary heat exchanger and the additional heat exchanger. Passing combustion equipment. Oite to claim 1, the exhaust gas when performing the add-fired operation alone is burning appliance not flow into the secondary heat exchanger. The combustion apparatus according to claim 1 or 2, wherein the exhaust gas that has passed through the hot water supply heat exchanger flows into the secondary heat exchanger. The combustion apparatus according to claim 2 or 3, wherein the independent flow path is formed by a partition wall. The combustion apparatus according to claim 4, wherein the cross section of the partition wall is substantially Z-shaped. The combustion apparatus according to any one of claims 1 to 5, wherein the exhaust gas that has passed through the hot water supply heat exchanger passes between the secondary heat exchanger and the exhaust side exhaust chamber. Oite to claim 1, combustion apparatus according to claim 6, the combustion apparatus provided with an exhaust flow regulating plate on the exhaust gas passage in the secondary heat exchanger.

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