JPH037699Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly relates to a gas combustion device used in a water heater with additional heating.

(Prior Art) Conventionally, this type of device includes a gas burner, a heat exchanger heated by the burner, and an exhaust passage downstream of the burner through the heat exchanger. The combustor is equipped with at least one water heater type or other combustor unit consisting of a fan forcibly guiding the combustor, and a transparent window that communicates the exhaust outlet of the exhaust passage with the outside is opened in the side of the combustor main body, It is known that an extended exhaust duct extending longitudinally in the direction is detachably connected to the exhaust outlet through the transparent window.

(Problem to be solved by the invention) However, when installing such a device outdoors, for example, the extended exhaust duct becomes unnecessary, and it is conceivable to remove it. This is undesirable because the load on the fuel tank is reduced and the combustion conditions change.

(Means for Solving the Problems) The purpose of the present invention is to obtain an apparatus free from such inconveniences, and the combustor body includes a gas burner, a heat exchanger heated by the burner, and a heat exchanger heated by the burner. and a fan that forcibly guides the exhaust gas of the burner through the heat exchanger to the exhaust passage on the downstream side thereof, and a transparent fan that communicates the exhaust outlet of the exhaust passage with the outside. In a case where a window is opened on the side surface of the combustor body and an extended exhaust duct extending longitudinally outward is removably connected to the exhaust outlet through the transparent window, the flow path resistance of the extended exhaust duct is approximately A lid body having a large number of small holes giving equal resistance is connected to the exhaust outlet so as to be replaceable with the duct, and when the lid body is connected to the exhaust outlet, the lid body closes the transparent window.

(Example) An example of implementing the present invention will be explained with reference to attached drawings.

In the drawings, 1 indicates a combustor main body, and within the main body 1,
A gas burner 3 in the combustion chamber 2 , a heat exchanger 4 above the burner 3 heated by the burner 3 , and the exhaust gas from the burner 3 being forced through the heat exchanger 4 to an exhaust passage 5 on the downstream side thereof. The main body 1 is provided with at least one combustor unit 7 consisting of a push-type fan 6 and a transparent window 8 opened in the side surface of the main body 1 to allow the combustor unit 7 to pass through the exhaust outlet 5a of the exhaust passage 5 to the outside. , an extended exhaust duct 9 that extends longitudinally outward.
is detachably connected to the exhaust outlet 5a through the transparent window 8.

In the illustrated example, the units 7 are arranged side by side in a pair on the left and right inside the main body 1, and one of the units 7 is connected to the bathtub 10 outside.
The other side is used for reheating the bathtub 10, so that it functions as a water heater with reheating.

In this case, the exhaust passages 5 extend rearward into a pair of left and right sides, and the transparent window 8 provided in the combustor body 1 facing the exhaust outlet 5a is provided in one common window. did.

The duct 9 described above has a diameter of 100 mm and a length, for example.
The duct has a length of 7 m and has 3 bends, and is unnecessary when installed outdoors and should be removed. A lid body having a hole 11a is prepared, and the lid body 11 is connected to the exhaust outlet 5a so as to be replaceable with the duct 9. That is, the exhaust outlet 5a can be freely switched between a state in which the duct 9 is connected to it in preparation for indoor installation, and a state in which the duct 9 is removed and the lid member 11 is attached in preparation for outdoor installation. When the lid 11 is connected to the exhaust outlet 5a, the lid 11 closes the transparent window 8.

To explain this, the transparent window 8 has a horizontally long rectangular shape, and the lid body 11 has a convex portion 11b that fits and is inscribed in the transparent window 8, and a convex portion 11b that fits and inscribes the transparent window 8, as is clear from FIG.
It has a bowl-shaped cross section with a surface 11c that contacts the inner surface of the combustor main body 1 at the periphery, and when the lid 11 is connected to the exhaust outlet 5a, a transparent window 8 is formed on the outside of the lid 11.
I tried to block it.

Note that a flange 11d is provided on the inner edge of the lid 11.
The lid body 11 is connected to the exhaust outlet 5a of the exhaust passage 5 by overlapping the flange 11d with the flange 5d provided at the periphery of the exhaust outlet 5a.

(Function) This function is explained as described above, that is, in the case of indoor installation, the duct 9 is connected to the exhaust outlet 5a and acts to guide the exhaust outdoors, but in the case of outdoor installation In this case, the duct 9 is removed and the lid 11 is applied, and the flow path resistance is approximately equal in both cases.Thus, considering the operation of the unit 7, the burner 3 is placed on the exhaust side. It is possible to obtain stable combustion without greatly changing the load.

Moreover, when installed outdoors with the extension exhaust duct 9 removed, the transparent window 8 and the exhaust outlet 5a are in an open state, and the appliance main body 1 and the unit 7 are connected through these.
Although there is a possibility that rainwater, dirt, etc. may enter the inside, this can be prevented as much as possible by connecting the lid 11 to the exhaust outlet 5a.

(Effect of the invention) As described above, according to the invention, the combustor main body 1
The internal combustor unit is prepared with an extended exhaust duct connected to its exhaust outlet, and when the duct is removed and installed outdoors, a large number of combustor units that provide a resistance approximately equal to the flow path resistance of the duct are used instead. Since the lid body with small holes is connected, the gas burner of the unit can always keep the load on the exhaust side almost constant, and can always obtain stable and good combustion. If the lid body is provided in the combustor and can be replaced with the duct, substantially the same flow path resistance can be obtained regardless of the presence or absence of the duct, and the intrusion of foreign matter from the combustor body and burner unit can be prevented. It can be prevented, is simple, and can be obtained at low cost.

[Brief explanation of the drawing]

Fig. 1 is a front view of an example of the device of the present invention, Fig. 2 is a cross-sectional side view of the main parts thereof, Fig. 3 is a front perspective view thereof, and Fig. 4 is a cut-away side view of the main parts in the switching state. FIG. 5 is a perspective view from the front. 1... Combustor body, 3... Gas burner, 4...
Heat exchanger, 5...exhaust passage, 5a...exhaust outlet,
6...Fan, 7...Combustor unit, 8...Transparent window, 9...Extension exhaust duct, 11...Lid, 11
a...Small hole.

Claims (1)

[Scope of utility model registration request] A combustor unit that includes a gas burner, a heat exchanger heated by the burner, and a fan that forcibly guides exhaust gas from the burner to an exhaust passage downstream of the burner through the heat exchanger. A transparent window that communicates the exhaust outlet of the exhaust passage with the outside is opened on the side surface of the combustor main body, and the exhaust outlet is provided through the transparent window of an extended exhaust duct that extends longitudinally outward. In the device, a lid body having a large number of small holes providing a resistance substantially equal to the flow path resistance of the extended exhaust duct is connected to the exhaust outlet so as to be replaceable with the duct, and the exhaust outlet is connected to the exhaust outlet. A combustion device in which a transparent window is closed by a lid when the lid is connected to the combustion apparatus.