JPS6215724Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention divides the bathtub, particularly its body, into a combustion housing that accommodates a burner and a heat exchanger, and a control housing that houses a control member, and the control housing is The present invention relates to an improvement of a bathtub in which at least two sides of the combustion casing other than one piping side from which a water pipe is led out can be freely replaced.

Conventionally, in this type of bath boiler, an entrance/exit through which the burner can be freely entered and exited is formed at the bottom of each side of the combustion cabinet whose control housing is replaceable, and the burner is inserted through the entrance/exit of the desired side selected according to the installation conditions. When the burner is inserted into the combustion case and the control case is attached to the side thereof, the mixing pipe of the burner is generally exposed to the gas nozzle in the control case through the inlet/outlet. It is common to form a primary air intake to the mixing tube and a secondary air intake to the burner, respectively.

In order to prevent the combustion of the burner from being affected by the wind, it is necessary to prevent the wind from the primary air intake through not only the secondary air intake but also the relatively large opening for entering and exiting the burner. In order to prevent air from entering the combustion chamber, it is desirable to form the air intake on the peripheral side of each chamber on the side of the installation wall at the back of the chamber, which is not affected by the wind, that is, on the piping surface side. If you make it freely replaceable, the primary air intake may face the front side due to replacement. In this case, the primary air intake is formed on both the front and rear sides of the control case, and the Although it is possible to block the facing intake with a blind board, etc., it would be unsightly in terms of appearance.

The present invention was proposed in view of the above-mentioned problems. 6, and on the peripheral side of the combustion case 4, at least two side surfaces 4b, 4 other than the piping surface 4a are provided on one side from which the water pipe 7 leading to the heat exchanger 3 is led out.
A lower entrance/exit 8 through which the burner 2 can be freely entered and exited is formed at b, and the control housing 6 is connected to the mounting surface 6a on one side.
The mixing tube 2a of the burner 2 is made to face the gas nozzle 9 in the control housing 6 through the inlet/outlet 8 of each side surface 4b, 4b' to which the control housing 6 is attached. In this case, the secondary air intake port 10 on the peripheral side of the combustion case 4 is formed only on the piping surface 4a, and the primary air intake port 11 on the peripheral side of the control case 6 is formed on the mounting surface 6a. It is formed on the top of at least two other side surfaces 6b, 6b.

In the illustrated one, the piping surface 4a of the combustion case 4 is used as the back surface, and an inlet/outlet 8 is formed on each of the left and right sides 4b, 4b, and the control case 6 is mounted on one of the side surfaces 4b, 4b' on the mounting surface 6a which is completely open. Join and both casings 4 and 6
are connected by a connecting piece 12 on the lower surface and an upper lid 13. In this case, the entrance/exit 8 on the side where the control case 6 is not attached is closed with a blind plate 14.

The primary air intake ports 11 described above are formed on all three side surfaces 6b, 6b, 6b of the control case 6 except for the mounting surface 6a, but are not limited to this.
It can be formed on the side. In the drawing, 15 is a heat shield plate provided on the control case 6, and 16 is an exhaust gas formed on both front and rear sides 6b, 6b of the control case 6 to exhaust hot air between the heat shield plate 15 and the combustion case 4 to the outside. Show mouth.

Next, to explain its operation, when there is no wind, the ejector action accompanying the gas injection from the gas nozzle 9 creates a suction airflow of outside air from the primary air intake port 11 in the upper part toward the mixing pipe 2a in the lower part in the control case 6. , provided with a supply of primary air and cooling of the control member 5;
Also, inside the combustion case 4, there is a piping surface 4a facing the installation wall a.
Outside air is sucked in from the secondary air intake port 10 of the burner 2, and combustion is performed in the burner 2.

This secondary air intake port 10 is prevented from directly entering the wind in windy conditions by the installation wall a, but the primary air intake port 11 on the peripheral side of the control case 6 is blocked by the wind depending on the wind direction. It may invade. However, when there is wind, the wind that enters the control housing 6 through the primary air intake 11 on the wind direction side blows through to the outside from the primary air intake 11 on the other side in the upper part of the control housing 6.
Wind is prevented as much as possible from entering into the combustion chamber 4 through the lower entrance/exit 8, so that poor combustion in the burner 2 will not occur even in windy conditions.

As described above, according to the present invention, the primary air intake port 11 on the peripheral side of the control housing 6 is formed on at least two upper side surfaces 6b, 6b of the control housing 6,
When there is wind, even if wind enters the control housing 6 from the primary air intake 11 on one side 6b, it escapes to the outside from the primary air intake 11 on the other side 6b, and the wind descends inside the control housing 6. This effect is achieved regardless of the change in direction of the primary air intake port 11 due to the replacement of the control housing 6. In combination with forming the secondary air intake port 10 on the circumferential side of the piping surface 4a on the piping surface 4a which is not affected by wind, this has the effect of reliably preventing poor combustion in the burner 2 during windy conditions.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of one example of implementing the present invention;
The figure is a cutaway plan view, and FIGS. 3 and 4 are perspective views as seen diagonally from the front. 1... vessel body, 2... burner, 2a... mixing tube,
3...Heat exchanger, 4...Combustion casing, 4a...Piping surface, 4b...Other side surfaces, 5...Control member, 6...
...Control case, 6a...Mounting surface, 6b...Other sides, 7...Water pipe, 8...Inlet/outlet, 9...Gas nozzle, 10...Secondary air intake, 11...Primary air intake .

Claims (1)

[Scope of utility model registration request] The vessel body 1 is divided into a combustion case 4 which houses a burner 2 and a heat exchanger 3 therein, and a control case 6 which houses a control member 5 therein. A lower inlet/outlet 8 through which the burner 2 can be freely entered and exited on at least two side surfaces 4b, 4b excluding the piping surface 4a on one side through which the water pipe 7 leading to the heat exchanger 3 is led out.
The control housing 6 is replaceable on each side surface 4b, 4b on one side mounting surface 6a, and the mixing pipe 2a of the burner 2 is attached to each side surface 4b, 4b' on which the control housing 6 is attached. In the case where the gas nozzle 9 in the control case 6 is faced through the inlet/outlet 8, the secondary air intake port 10 on the peripheral side of the combustion case 4 is connected to the piping surface 4a.
1 of the peripheral side of the control housing 6.
A bathtub comprising a secondary air intake port 11 formed in the upper part of at least two side surfaces 6b, 6b other than the mounting surface 6a.