JPS6212212Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a removable blower for combustion air supply and exhaust, and a secondary air supply control board, so that water heaters, etc. can be installed both vertically and horizontally. The present invention provides a combustion device.

Conventionally, gas water heaters have a burner, a combustion chamber, and a heat exchanger installed in sequence in the vertical direction, making them long and restricting their installation locations.

The reason why conventional water heaters could only be installed vertically is that when combustion is performed horizontally, the combustion gas flows upward due to the draft effect, disrupting smooth air supply and exhaust, and worsening combustibility. Therefore, it was difficult to put it into practical use.

A method of forcibly supplying and exhausting with a blower is also used, but the burner, combustion chamber, and heat exchanger are installed vertically, and there is no method of connecting them horizontally for combustion. Nakatsuta.

One of the reasons is that the draft causes flames,
Since the combustion gas is concentrated upward, it is necessary to set a large amount of supply and exhaust, which has the disadvantage of reducing combustion efficiency.

The present invention solves the above problems and provides a water heater that can be easily installed both vertically and horizontally.
This makes it possible to install it under the floor, etc.

An embodiment of the present invention will be described with reference to the drawings.

Figure 1 shows the main body of the water heater of the present invention in the vertical direction.
The figure is a diagram showing the principle of construction when installed horizontally.

In the figure, reference numeral 1 denotes a water heater main body casing, in which a burner 2, a combustion chamber 4, a heat exchanger 5, and an exhaust hood 6 are housed, and combustion exhaust gas is exhausted from an exhaust stack 7.

The combustion gas passes from the gas inlet 8 through the gas governor 9, the electromagnetic valve 10, and the gas amount adjustment valve 11, and then from the nozzle 13 attached to the nozzle mounting body 12 to the gas burner 2 while sucking primary air by its ejection pressure. Supplied.

On the other hand, the water supplied from the water supply connection port 14 passes through the water governor 15 and absorbs heat in the hot water pipe of the heat exchanger 5.
Hot water is supplied from the hot water connection pipe 17. A switch interlocked with the water governor 15 is provided, and a solenoid valve 1
0, the gas amount adjusting valve 11 and the igniter are controlled, and after the pilot burner 3 is ignited, the burner 2 burns.

Incidentally, a switch interlocked with the water governor 15 is designed to be able to control a blower 18 installed as necessary.

The removable secondary air control board 19, in which the upper air supply port 20 shown in detail in FIG. 3 has a larger opening area than the central air supply port 21 and the lower air supply port 22, is It is provided between the burner 2 and the combustion chamber 4 when the main body 1 is attached.

Incidentally, the secondary air control board 19 has a burner insertion port 2.
3 is provided.

Now, when the hot water supply is started when installed vertically, the blower 18, igniter, and solenoid valve 10 provided as necessary are controlled by the switch linked with the water governor 15, and the pilot burner 3 is ignited. When the combustion is detected, the gas amount adjustment valve 11 opens, the burner 2 is ignited, and the burner 2 burns while sucking secondary air from around the burner 2.

On the other hand, the water supplied from the water supply connection port 14 is heat-exchanged by the heat exchanger 5 and then hot water is supplied, and the temperature of the hot water is detected by the thermistor 16 and the gas amount adjustment valve 11 is controlled, thereby making it possible to adjust the hot water temperature. There is.

In the case of vertical installation, when the blower 18 is not provided, the CF type is used, and when the blower 18 is provided, the FE type or FF type is used.

When installed horizontally, a secondary air control board 19 is provided together with the blower 18 to supply a large amount of secondary air to the upper part, so flames and combustion exhaust gas are not skewed upward due to draft. , it is possible to prevent the fuel from overflowing upwards, thereby enabling lateral combustion.

As described above, according to the present invention, by providing a blower and a secondary air control board to a conventional vertical water heater, a water heater with high industrial efficiency that can be installed horizontally is provided. I can do it.

The secondary air control board supplies most of the secondary air from above, which prevents flame overflow and enables combustion with a smaller excess air ratio than when combustion is performed simply horizontally, resulting in high combustion efficiency. can be obtained.

Since the water heater can be installed horizontally, it can be installed in a dead space, such as inside a roof bag or under the floor, which was not used in the past, so the installation space can be used effectively.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the longitudinal installation state of a combustion device such as a gas water heater in an embodiment of the present invention, Fig. 2 is a front view showing the same horizontal installation state, and Fig. 3 is a front view showing the state in which the combustion device such as a gas water heater is installed in the horizontal direction. It is a perspective view of a control board. 1...Body casing, 2...Gas burner, 4
... Combustion chamber, 5 ... Heat exchanger, 6 ... Exhaust hood, 18 ... Blower, 19 ... Secondary air control board.

Claims (1)

[Scope of utility model registration request] Connect the gas burner, combustion chamber, and heat exchanger in sequence,
and a combustion device in which a combustion air supply and exhaust blower is provided on the air supply side or the exhaust side, and a secondary air supply path between the gas burner and the combustion chamber of this combustion device is removably installed, and the upper part is wider than the center part or the lower part. A combustion device such as a gas water heater, which is equipped with an open secondary air control plate.