JPH0616284Y2 - Damper mounting structure - Google Patents

Description

[Detailed Description of the Invention] [Field of Use and Outline of the Invention] The present invention relates to a damper, and more particularly to a mounting structure of a damper that adjusts a suction ratio of primary air to a gas burner. The damper can be easily removed at the time of, for example.

[Prior Art and its Problems] Generally, as shown in FIG. 4, a plurality of burners for bath (B ₁ ) (B ₁ ) and a plurality of burners for boiling water are provided in a bath with a water heater. (B ₂ ) and (B ₂ ) are installed separately on the left and right sides of the pilot burner (P) by a predetermined number, and the gas inlet of each burner (B ₁ ) (B ₂ ) is installed on the mounting plate ( By fitting the openings (30) and (30) in (3), they are connected and integrated.

The mounting plate (3) is a horizontally long plate-shaped member having openings (30) (30) formed in a number corresponding to the number of burners. By being screwed to a pair of fixtures (31) (31) having a substantially L-shaped cross section, which are provided at opposite positions of the inner wall of the heat exchanger, the heat exchanger and the body are fixed sideways. The Rukoto.

Then, in the vicinity of the mounting plate (3), each burner (B ₁ ) (B ₂ )
Nozzle (N) (N) inserted into the gas inlet of is arranged,
The upstream side of the nozzles (N) (N) is connected and fixed to the manifold (4) in a communicating state.

During burner combustion, primary air is allowed to flow in simultaneously with gas from the primary air port of each burner, but in order to obtain good combustion, the amount of this primary air must be adjusted according to the type and amount of gas.

Therefore, in a case where a large number of burners are provided side by side, there are many methods in which a hole (20) for primary air inflow is separately opened in the peripheral wall near the gas inlet of the burner and the opening area is adjusted by a damper.

In this system, the damper (1), as shown in FIG.
It is a tubular body having a substantially C-shaped cross section, and an opening (10) having a diameter smaller than at least the hole (20) is formed on the side wall thereof. As shown in FIG. 6, the damper (1) is attached to the peripheral wall near the upstream open end of the mixing pipe of the burner so as to be fitted externally, and is not provided with the primary air port. The total area can be adjusted.

In this case, after the damper (1) is externally fitted in the vicinity of the upstream open end of the burner (B) in advance, the opening (3) of the mounting plate (3) is
Insert the open end of each burner (B) into (0) (30), and then
The mounting plate (3) is screwed to the fixtures (31) (31), and the manifold (4) is placed so that each nozzle (N) (N) faces each burner (B ₁ ) (B ₂ ). ) Is stored, if you want to remove the damper (1) for gas type conversion or burner inspection, etc., after removing the manifold (4), further attach the mounting plate (3) to the fixture (31). It has to be removed from (31), which makes the work difficult and troublesome. This is because the damper (1) is externally fitted to the peripheral wall near the gas inlet of the burner (B), so when the mounting plate (3) is screwed to the fixtures (31) (31), This is because the mounting plate (3) interferes and the damper (1) cannot be removed.

On the other hand, connect the gas inlet of each burner (B) to the nozzle from the mounting plate (3).
If it is projected to the (N) side, the damper (1)
Although the above problem can be solved by external fitting, most of the recent burners are burner made of a metal plate, and such a so-called sheet metal burner is provided with a mixing pipe section having a semicircular cross-sectional shape. The burner halves are crimped together to form a burner, and a pair of collar portions (corresponding to the caulking allowance) are projected on the outer peripheral surface of the gas inlet portion, and have such a pair of collar portions. Damper on the outer peripheral surface near the gas inlet
When (1) is fitted on the outside, it is necessary to make the cross-sectional shape of this damper (1) to be a special configuration, which makes the manufacturing of the damper cumbersome, and the inner peripheral surface of the damper and the hole (20 ) Is insufficiently adhered to the outer peripheral portion of the gas inlet, resulting in insufficient primary air setting performance.

[Technical problem] The present invention is directed to such an "opening formed in the damper (1)".
Depending on the opening degree of (10), the suction ratio of the primary air flowing into the burner (B) from the hole (20) formed in the tubular portion (T) at the upstream end of the mixing tube of the burner (B) is adjusted. Adjusting Damper (1)
Mounting structure ", the multiple burners (B) (B)
In order to facilitate the removal of the damper (1) when connected with the mounting plate (3) at the (T) part, the mounting plate (3)
The damper (1) can be removed from the upstream side of the damper (1) and the degree of close contact between the damper (1) and the primary air port formation part is improved.Furthermore, the mounting posture of the damper (1) does not change carelessly. It is a technical subject.

[Technical Means] The technical means of the present invention taken to solve the above technical problem is that "the burner (B) is made of a metal plate and the cylindrical portion is formed.
The mixing tube portion including (T) has a configuration in which a pair of halves having flange portions protruding from both sides of a semicircular cross-section portion are joined in an airtight state at the flange portion, and in the tubular portion (T). On one side of the flange coupling part, a gap part (23) is formed which is opened in the tubular part (T) and extends over a certain range from the open end of the tubular part,
The damper (1) is configured as a tubular body in which a projecting piece (11) projects outward in the radial direction from one end of the C-shaped cross section, and its outer diameter is made to substantially match the inner diameter of the tubular section (T). , Protruding piece (11)
The damper (1) in such a manner that is accommodated in the gap (23).
Was inserted into the tubular portion (T) ”.

[Operation] The technical means of the present invention operates as follows.

The tubular part of the damper (1) is C-shaped in cross section, and its outer diameter is the tubular part that becomes the inlet of the mixing pipe part in the burner (B).
Since the inner diameter of (T) is substantially matched, the outer diameter of the protruding piece (11) is reduced to some extent by pressing the peripheral wall of the tubular body part after matching the clearance (23) of the flange coupling portion. In this state, it can be fitted inside the tubular portion (T).

Therefore, when the damper (1) is set at a predetermined insertion position and insertion posture with respect to the hole (20) for primary air suction of the burner (B), the damper (1) is fixed to the tubular portion (T ) Can be fitted inside without any difficulty.

Here, the damper (1) is mounted in such a manner that the protruding piece (11) is housed in a gap portion (23) formed over a certain range from the open end of the cylindrical portion at a flange coupling portion such as by caulking. Therefore, the posture of the damper (1) in the tubular portion (T) becomes proper by the engagement between the gap portion (23) and the protruding piece (11). Further, in this state, the outer peripheral surface of the damper (1) and the mounting surface thereof are surely brought into close contact with each other.

On the other hand, attach a number of burners (B) (B) to
Even if connected at the (T) part, the burners (B) and (B) are connected to the mounting plate (3) without removing the burners (B) and (B) from the mounting plate (3), and the burners (B) and (B) are opened upstream. The damper (1) in the tubular part (T) may be pulled out to the upstream side from the end.

[Effects] The present invention having the above-described configuration has the following unique effects.

Since the damper (1) can be removed from the upstream side of the mounting plate (3), even if the mounting plate (3) is provided at the gas inlet of the burner (1), the damper (1) It is not necessary to remove the mounting plate (3) in order to remove the damper (1) from the burner (B), and the damper (1) can be easily removed and the workability is improved.

Further, the elastic restoring force of the damper (1) ensures that the outer peripheral surface of the damper (1) closely adheres to the inner peripheral surface of the burner near the gas inlet portion, so that the performance as a damper is improved.

Furthermore, in the state that the damper (1) is inserted in the tubular part (T),
Since the protruding piece (11) is fitted into the gap (23) and is in a rotation stop state, it is possible to prevent the inconvenience of changing the insertion posture of this damper inadvertently and stabilize the setting of the air suction amount by the damper (1). To do.

Further, the gap portion (23) is a joint portion of the metal plate halves constituting the mixing tube portion, that is, the flange portion is formed by joining the flange portion by caulking or the like, Further, since it can be formed at the time of coupling using the flange portion, the tubular portion (T) having the gap portion (23) can be easily formed.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

The embodiment of the present invention is the same as the conventional bathtub with a water heater, and in particular, the cylindrical tubular part (T) formed near the gas inlet part of the mixing tube part of the gas burner consisting of a pair of press-molded products. Further, as shown in FIG. 1, the damper (1) is attached in an internally fitted state. This damper (1)
Is attached to the nozzle (N) so as to be fitted onto the nozzle (N).

This gas burner (B) is composed of a pair of metal plate burner halves (2a) (2b) vertically divided into two, and the burner halves (2a) (2a)
b) The flange portions (21) and (22) formed in the respective required areas are caulked in an airtight state to form one gas burner, and one of the upper and lower flange portions of the tubular portion (T) is formed. A gap (23) as shown in FIG. 3 is formed between the (21) and the flange (22). Further, a hole (20) is formed at the center of the vicinity of the gas inlet of the mixing tube of the burner half (2b).

On the other hand, as shown in FIG. 2, the damper (1) used in this embodiment is a cylinder having a substantially C-shaped cross section with an outer diameter that substantially matches the inner diameter of the cylinder of the inlet of the mixing pipe of the burner (B). The protruding piece (11) is provided so as to project from one open end side of the cylindrical body, and the cylindrical body portion has an opening (20) that corresponds to the hole portion (20) when inserted into the burner (B). 10) is provided.

In order to fit the damper (1) into the tubular portion (T) near the gas inlet of the burner (B), the flange portion (21) and the flange portion (22) of the burner (B) are fitted as shown in FIG. ), The protrusion (11) of the damper (1) is fitted into the gap (23), and the diameter of the damper (1) is forcibly reduced while the damper (1) is slightly reduced. Is inserted from the upstream open end (gas inlet) of the burner (B). In this case, the opening (3
It is natural that the cutout portion corresponding to the gap portion (23) is also formed in 0).

In addition, the damper (1) is inserted from the gas inlet of the burner (B) so that the collar (40) provided on the nozzle (N) and the rear end of the damper (1) are aligned with each other. , The opening on the peripheral wall of the damper (1) facing the hole (20) of the burner (B)
It is assumed that (10) is formed.

In the configuration described above, when the damper (1) is inserted into the burner (B), the protruding piece (11) projecting from the damper (1) is a pair of the burner (B). Since the burner halves (2a) and (2b) are respectively fitted in the gaps (23) formed between the flanges (21) and (22) extending from the flanges (21) and (22), the projecting piece (11) has a flange ( Since it is sandwiched between the flange portion (22) and the flange portion (22), the damper (1) does not rotate in the cylinder portion near the gas inlet portion. Therefore, the damper (1) inadvertently rotates inside the tubular portion, and the opening (10) and the hole portion
There is no inconvenience that (20) does not match.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, and FIG. 2 is a damper (1)
FIG. 3, FIG. 3 is an explanatory view of a mounted state of the damper (1), FIG. 4 is an explanatory view of a heat exchanger with a water heater, FIG. 5 is an explanatory view of a conventional damper (1), and FIG. The figure shows a conventional damper (1)
It is an explanatory view of the mounting state of (1) …… damper, (10) …… opening (B) …… burner, (T) …… cylindrical part (20) …… hole, (3) ...... Mounting plate

Claims (1)

[Scope of utility model registration request] 1. A burner (B) through a hole (20) formed in a tubular part (T) at an upstream end of a mixing pipe of the burner (B) depending on the opening degree of the opening (10) formed in the damper (1). In the mounting structure of the damper (1) for adjusting the suction ratio of the primary air flowing into the inside of (B), the burner (B) is made of a metal plate, and the mixing pipe section including the tubular section (T) is a half A structure in which a pair of halves each having a flange portion protruding from both sides of a circular cross-section portion are joined in an airtight state at the flange portion, and one of the flange coupling portions in the tubular portion (T) has a tubular portion. A gap (23) is formed in (T) and extends over a certain range from the open end of the cylinder, and the damper (1) is provided with a protruding piece (1) from one end of the C-shaped cross section.
1) is configured as a tubular body protruding outward in the radial direction, the outer diameter of which is substantially matched with the inner diameter of the tubular portion (T), and the protruding piece (11) is housed in the gap portion (23). A damper mounting structure in which the damper (1) is inserted into the tubular portion (T) in a mode.