JPH064199Y2 - Exhaust device for combined combustor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention has a two-pipe / two-fluid structure having a composite combustor, for example, a heat exchanger for boiling water and a heat exchanger for bath reheating, and is used outdoors. The present invention relates to an exhaust device for a balanced-flue composite combustor that supplies more air and exhausts it outdoors.

[Conventional technology]

An example of a conventional combined combustor having a heat exchanger for boiling water and a heat exchanger for bath reheating will be described with reference to FIG.

In FIG. 10, 1 is a closed case of a combustor, 2 is a heat exchanger for boiling water, 3 is a heat exchanger for bath reheating,
Both heat exchangers 2 and 3 are arranged side by side inside the case 1. Reference numerals 4a and 4b are a hot water burner and a bath reheating burner that mix and burn the gas ejected from a nozzle hole (not shown) and the primary air sucked by the kinetic energy of the gas. It is arranged below the heat exchanger 2 for boiling and the heat exchanger 3 for bath reheating. Reference numeral 5 is an exhaust cover fitted and attached to the upper part of each of the boiling water heat exchanger 2 and the bath reheating heat exchanger 3, and 5a is an exhaust partition plate provided inside the exhaust cover 5. Is located between the boiling water heat exchanger 2 and the bath reheating heat exchanger 3, and divides the interior of the exhaust cover 5 into a boiling water side exhaust passage 5b and a bath side exhaust passage 5c. Reference numeral 6 denotes an exhaust connecting cylinder fitted to the upper portion of the exhaust cover 5 and fixed with a screw 9a, and no partition plate is provided inside thereof.
Reference numeral 7 denotes an exhaust pipe which is fitted into the exhaust connection pipe 6 and fixed by screws 9b. Reference numeral 8 denotes a supply cylinder fixed to the case 1 with a screw 9c, which forms a double cylinder with the exhaust cylinder 7 inside and is connected to an outdoor supply / exhaust top 10.

[Problems to be solved by the device]

As shown in FIG. 10, a conventional device of this type does not have a partition plate inside the exhaust connecting cylinder 6, so that when it is burned by the hot water burner 4a, for example, a hot water heat exchanger is used. The exhaust gas 12 which has passed through 2 is heated by the exhaust cover 5 on the boiling water side exhaust passage 5b.
Through the exhaust connection pipe 6, the exhaust pipe 7 and the air supply / exhaust top 10 to be discharged outside, but part of the exhaust gas 12 is inside the exhaust connection pipe 6 and on the bath side of the exhaust cover 5. It flows back to the exhaust passage 5c, passes through the inside of the bath reheating heat exchanger 3, and is sucked into the hot water burner 4a together with the primary air.

In this way, when a part of the exhaust gas 12 is sucked into the burner together with the primary air, the amount of oxygen in the mixed gas in the burner decreases and the flame becomes in a lift state, and carbon monoxide increases and combustion noise increases. There is a problem.

In order to improve such a problem, it may be considered to partition the inside of the exhaust connection cylinder 6 into a hot water heating side and a bath reheating side. There are cases where it is installed behind the combustor and cases where it is installed laterally, and there are cases where the bathtub is installed on the right side and the left side of the bathroom. It was impossible to partition the boiling water side and the bath reheating side with the partition plate.

The present invention solves the problems of the prior art as described above, prevents intake of exhaust gas into the burner, and enables good combustion, and the supply / exhaust top is located on either side or rear of the combustor. The purpose is to provide an exhaust system that can be dealt with even when installed.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention makes the cross-sectional shape of the connecting portion of the exhaust connecting cylinder with the exhaust cover square, and partitions the inside by a vertical exhaust partition plate and a horizontal exhaust partition plate, a first exhaust passage E ₁ which forms a square, and the exhaust passage E _2, E ₄ forming the second and fourth rectangles in contact with the two sides Ru phase next to the first exhaust passage, said second and fourth Third exhaust passage E ₃ in the shape of a square that touches the short side of the exhaust passage of
And the exhaust passages E ₁ and E ₂ or E ₁ and E ₄ are used as exhaust passages of one of the combustors, and the exhaust passages E ₃ and E ₄ or E ₃ and E ₂ are used for combustion of the other. It is characterized in that it is selectively used as an exhaust passage of a container.

[Action]

Since the exhaust device of the present invention has the above-described structure, the second exhaust passage E ₂ and the fourth exhaust passage E ₄ have the same area, and one of the second exhaust passage E ₂ and the first exhaust passage E ₁ has the same area. The total exhaust area is the exhaust area corresponding to either combustion amount,
Exhaust passage E ₃ and the second or fourth exhaust passage E ₂ or E
_By setting the total area of ₄ to be an exhaust area commensurate with the combustion amount of the other, it is possible to deal with whether the supply / exhaust top is installed laterally or rearward with a common exhaust device.

〔Example〕

An embodiment of the exhaust device according to the present invention will be described below with reference to FIGS. 1 to 6.

FIG. 1 is a block diagram of the exhaust device of the present invention applied to a balanced ventilation combustor having a two-tube two-channel structure, in which 1 is a closed case of the combustor, in which a heat exchanger 2 for boiling water is provided. A bath reheating heat exchanger 3 is arranged in parallel, and a hot water heating burner 4a and a bath reheating burner 4b are disposed below the respective heat exchangers. Reference numeral 5 is an exhaust cover fitted and attached to the upper part of each of the boiling water heat exchanger 2 and the bath reheating heat exchanger 3, the inside of which is a boiling water side exhaust passage 5b and a bath by an exhaust partition plate 5a. Side exhaust passage 5c, and the width dimension of the boiling water side exhaust passage 5b in the upper part of the exhaust cover 5 is x, the width dimension of the bath side exhaust passage 5c is y, and the two exhaust passages 5b and The depth dimension at the top of 5c is (x + y). That is, the plane shape of the opening of the exhaust cover 5 is x.
It has a square shape with one side of + y.

Reference numeral 6 denotes an exhaust connecting cylinder which is fitted on the upper portion of the exhaust cover 5 and fixed by a screw 9a, and the sectional shape of the lower portion is naturally the square shape. And in the present invention,
Four exhaust passages E ₁ , E ₂ , E ₃ and E ₄ are formed by a vertical exhaust partition plate 6a and a horizontal exhaust partition plate 6b each having a cruciform shape inside, and the exhaust passage areas of the exhaust exhaust pipes 6 are the respective exhaust passage areas. (X ² ), (x × y), (y ² ) and (y × x) in the lower part of (second
(See FIG. 4). Reference numeral 7 denotes an exhaust pipe fitted to the exhaust connection pipe 6 and fixed by screws 9b. A double pipe is constituted by a supply cylinder 8 fixed to the case 1 by screws 9c, and an outdoor supply / exhaust top 10
Connected to.

5 and 6 are plan views for explaining a type in which the air supply / exhaust top 10 is installed on the side of the case 1 of the combustor and a type installed on the rear side thereof. Reference numeral 1a is an air supply / exhaust lid that closes the connection hole of the air supply / exhaust top 10 provided in the case 1 of the combustor. In the case of FIG. 5, the air supply / exhaust lid 1a is attached to the rear of the case 1 with the screw 9d, the air supply / exhaust top 10 is attached to the side of the case 1 with the screw 9c, and the exhaust connecting pipe 6 and the exhaust pipe 7 are fitted together. Attach to the exhaust cover 5 with screws 9a in the facing direction (sideways). In the case of FIG. 6, the air supply / exhaust lid 1a is attached to the side of the case with screws 9d, the air supply / exhaust top 10 is attached to the rear of the case 1 with screws 9c, and the exhaust connecting cylinder 6 is fitted to the exhaust cylinder 7. Attach it to the exhaust cover 5 with the screw 9a in the facing direction (rearward).

Next, the flow of supply / exhaust gas inside the combustor will be described.
For example, when burned by the hot water burner 4a, the air supply 11 passes from the outdoor air supply / exhaust top 10 through the air supply cylinder 8 into the case 1 of the combustor and is sucked into the hot water burner 4a. Participates in combustion as primary air and secondary air. Then, the exhaust gas 12 that has passed through the heat exchanger 2 for boiling water after combustion
Rises through the hot water exhaust passage 5b of the exhaust cover 5,
The exhaust gas passes through the exhaust connection pipe 6, the exhaust pipe 7, and the supply / exhaust top 10, and is discharged to the outside. Since the vertical exhaust partition plate 6a and the horizontal exhaust partition plate 6b having a cross shape are provided inside the exhaust connection cylinder 6 of the present invention, a part of the exhaust gas 12 is discharged from the exhaust cover 5 as in the conventional example. It does not pass through the inside of the bath-side exhaust passage 5c and the bath-exchanging heat exchanger 3 and is not sucked into the boiling water burner 4a, and fresh air 11 is involved in combustion as primary and secondary air.

Next, an exhaust flow of each installation type of the supply / exhaust top 10 will be described.

FIG. 5 is a plan view when the air supply / exhaust top 10 is installed on the side of the combustor. In this figure, the exhaust gas 12 combusted in the hot water burner 4a enters the hot water exhaust side exhaust passage 5b of the exhaust cover 5 into the exhaust passages E ₁ and E ₄ of the exhaust connection pipe 6, and further the exhaust pipe 7 and the supply / exhaust top. Passes 10 and is discharged outdoors. At that time, the lateral exhaust partition plate 6b of the exhaust connecting cylinder 6 prevents the backflow of the exhaust gas 12 to the bath-side exhaust passage 5c of the exhaust cover 5. FIG. 6 is a plan view when the air supply / exhaust top 10 is installed behind the combustor. In this figure, a hot water burner
The exhaust gas 12 combusted in 4a enters from the boiling water side exhaust passage 5b of the exhaust cover 5 into the exhaust passages E ₁ and E ₂ of the exhaust connecting cylinder 6,
Further, it passes through the exhaust stack 7 and the supply / exhaust top 10, and is discharged outdoors. At that time, the vertical exhaust partition plate 6a of the exhaust connecting cylinder 6 prevents the backflow of the exhaust gas 12 to the bath side exhaust passage 5c of the exhaust cover 5.

7 to 9 show another embodiment of the present invention.

This embodiment, vertical exhaust partition plate 6a and the and the lateral exhaust partition plate 6b after having partitioned into four exhaust connecting tube 6 similar to the embodiment of the said exhaust passage by further vertical partition 6a 'E ₁ And E ₂
The exhaust passages corresponding to and are further divided into E ₅ and E ₈ and E ₆ and E ₇ . Therefore, in the case of this embodiment, three rectangular exhaust passage E _4, E _5, and E _8, an exhaust passage E ₃ of 3 squares to one side of the short sides, E _6, E
₇ and are configured.

Since this embodiment is constructed as described above, FIG.
As shown in (a), if the left air supply / exhaust top is installed in the right bathtub,
When the hot water side is E ₄ + E ₅ + E ₈ and the bath side is E ₃ + E ₆ + E ₇ , the air is exhausted. , E ₅ + E ₆ + E ₇ + E ₈ on the hot water side, E ₃ + E ₄ on the bath side, and further, as shown in the same figure (c), install the right supply and exhaust top in the left bathtub. In the case of, the water heater side is E ₄ + E ₅ + E ₈ and the bath side is
Was evacuated _{E 3 + E 6 + E 7} , as shown in FIG. (D), when the rear air supply and exhaust top placed on the left tub, Yuniegawa in _{E 3 + E 4 + E 5} + E 6 ,
The bath side can be exhausted with E ₇ + E ₈ .

[Effect of device]

As described above, according to the present invention, the exhaust gas generated by one combustor (for example, a hot water burner) does not flow backward through the other combustor, and good combustion with fresh air supply is achieved. It is possible to maintain the above, and it is possible to easily deal with the case where the air supply / exhaust top is installed on the side or the rear of the combustor simply by changing the direction of the exhaust connecting cylinder.

[Brief description of drawings]

FIG. 1 is a block diagram of a combustor equipped with the exhaust device of the present invention,
FIG. 2 is a front view of the exhaust pipe of the present invention, FIG. 3 is a sectional view taken along the line AA ′ in FIG. 2, FIG. 4 is a view in the direction of arrow B in FIG. 2, and FIG. FIG. 6 is a plan view of a side air supply / exhaust type, and FIG. 6 is a plan view of a rear air supply / exhaust type. 7 to 9 show another embodiment of the present invention. FIG. 7 is a front view corresponding to FIG. 2, FIG. 8 is a view taken along the arrow B ′ of FIG. 7, and FIG. (A)-(D) are explanatory views of different usage states. FIG. 10 is a block diagram of a combustor equipped with a conventional exhaust system. 1 ... Case, 1a ... Air supply / exhaust lid, 2 ... Heat exchanger for boiling water, 3 ...
Heat exchanger for reheating bath, 4a ... Burner for boiling water, 4b ... Burner for reheating bath, 5 ... Exhaust cover, 5a ... Exhaust partition plate, 5b ... Exhaust passage on hot water side, 5c ... Exhaust passage on bath side, 6 ......
Exhaust pipe, 6a ... Vertical exhaust partition plate, 6b ... Horizontal exhaust partition plate, 7
... Exhaust stack, 8 ... Supply cylinder, 9a, 9b, 9c, 9d ... Screw, 10 ... Supply / exhaust top, 11 ... Supply, 12 ... Exhaust gas, 14a ... Hot water nozzle, 14b ... Bath heating nozzle, E _{1 to} E ₈ ... Each exhaust passage in the exhaust connection cylinder.

Claims (2)

[Scope of utility model registration request] 1. Two heat exchangers are arranged side by side inside a hermetically sealed case of a combustor, an exhaust cover is attached to the upper part of both heat exchangers, and an exhaust partition plate is provided inside the exhaust cover. The exhaust passages of the two heat exchangers are divided, and the lower end of the L-shaped exhaust connecting cylinder is connected to the upper part of the exhaust cover, and the other end of the exhaust connecting cylinder is connected to the exhaust cylinder. In the connected balanced-flue type composite combustor, the cross-sectional shape of the connecting portion of the exhaust connecting cylinder with the exhaust cover is made square, and the inside is partitioned by a vertical exhaust partition plate and a horizontal exhaust partition plate to form a square shape. Forming the first exhaust passage E
₁ , exhaust passages E ₂ and E ₄ forming second and fourth rectangles that are in contact with two adjacent sides of the first exhaust passage, and squares that are in contact with the short sides of the second and fourth exhaust passages forming a third exhaust passage E ₃ of forming a said exhaust passage E ₁ and the E ₂ or E ₁ and E ₄ is an exhaust passage of one of the combustor, the exhaust passage E ₃ and E ₄ or E An exhaust system in a combined combustor, wherein ₃ and E ₂ are selectively used as an exhaust passage of the other combustor. 2. The first exhaust passage E ₁ and the second exhaust passage E ₂ are further divided by a vertical partition plate into three rectangular exhaust passages and one end on each short side thereof. The exhaust device for a combined combustor according to claim 1, wherein three exhaust passages forming a square are formed adjacent to each other.