JPS5919852Y2 - Air blowing structure of gun type burner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gun type burner used in a bathtub with an oil water heater, and particularly relates to a blowing structure.

As shown in FIGS. 1 and 2, the applicant has already developed draft tubes 21 and 22 into which pressure spray nozzles 11 and 12 are inserted, which are to be installed in the hot water supply combustion chamber and the bath kettle combustion chamber, respectively.
are inserted into the ventilation chambers 31.32 for hot water supply and bath kettle, and a damper chamber 33 is inserted between each of the ventilation chambers 31.32.
is adjacent to the damper chamber 33, and the discharge port 801 of the fan casing is connected to the damper chamber 33, and the combustion air supplied from the blower is branched from the damper chamber 33.
1.42 through the ventilation chamber 3 for hot water supply and bath kettle
We proposed a gun-type burner blowing structure that supplies 1.32 liters of air.

According to this blowing structure, only one combustion blower is required, so the cost is low, but the blowing path is complicated, and as is clear from the vertical cross-sectional view in Figure 2, this structure The tubes 21 and 22 are connected to the ventilation chamber 31.
．． 32 is inserted into the vertical end of the side wall 3 perpendicular to the partition walls 1 and 2 with the damper chamber 33, and the air circulation direction of each damper port 41.42 and the extending direction of the draft tube 21.22 are aligned. Damper mouth 41 so as to intersect
．． 42, there were the following drawbacks.

That is, depending on the flow velocity, the air ejected from the damper ports 41.42 collides with the side walls 4, 4 of the ventilation chamber facing the respective damper ports 41.42, and bounces back, causing the draft tubes 21.
Furthermore, a portion of the airflow bends approximately at right angles from the damper port 41.42 and enters the draft tube 21.22 directly, resulting in unbalanced flow within the draft tube 21.22. It was remarkable.

Therefore, in the conventional structure, one-sided combustion may occur or the flame may be blown out, leaving problems in terms of combustion efficiency and flame stability.

The purpose of this invention is to reduce the dynamic pressure of the airflow passing through the damper port and entering the draft tube, thereby preventing uneven flow within the draft tube, and at the same time preventing one-sided combustion and flame holding. The purpose is to prevent imperfections and combustion noise.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 8.

First, 31 and 32 are a ventilation chamber for hot water supply and a ventilation chamber for a bath kettle, respectively, and a damper chamber 33 is adjacent between each of the ventilation chambers 31 and 32.

In addition, draft tubes 21 and 22 for hot water supply and bath kettle are inserted into the vertical ends of the side walls 3 that are perpendicular to the partition walls 1 and 2 between the damper chamber 33 and the damper chamber 33 in each of the ventilation chambers 31 and 32. 21 and 22 are arranged at diagonal positions on the side wall 3, as shown in FIGS. 4 and 6.

By the way, a pressure spray nozzle 11.12 is inserted into each draft tube 21.22 as shown in FIG. .52 is placed.

As shown in FIG. 4, the stabilizer 51.52 is provided with holes 5 so as not to impede the spraying of fuel from the pressure spray nozzles 11.12, and air passage holes 6 are formed radially around the holes 5. is opened, which serves to swirl the air supplied from the air mass of the draft tube 21.22 and mix it thoroughly with the fuel jetted from the pressure spray nozzle 11.12.

Further, the distal ends of the draft tubes 21 and 22 are arranged in a combustion chamber 71 for hot water supply and a combustion chamber 72 for a bathtub, respectively, and this can be understood from FIGS. 7 and 8.

Note that 711 and 712 are a hot water supply heat exchanger and a bathtub heat exchanger, respectively.

The damper chamber 33 has a discharge port 80 of the fan casing 8 in which the fan 701 of the blower 7 is installed through the opening 331.
1, and partition wall 1 with each ventilation chamber 31, 32.
, 2 are provided with damper ports 41 and 42.

Therefore, the combustion air supplied from the blower 7 is branched at the damper chamber 33 and is supplied through the damper port 41.42 to the hot water supply and bath kettle blowing chambers 31.32.

By the way, each damper port 41.42 is connected to the partition wall 1.2.
air inlet 6 of each said draft tube in the end at
1.62, it faces the side walls 4, 4 of the ventilation chamber, which are parallel to the partition walls 1, 2.

This can be understood from FIGS. 4 and 6.

In addition, each damper port 41.42 has an air control damper 81°8.
2 is arranged, and its operation parts 811, 821 are mounted on the mounting board 91.9 of the pressure spray nozzle 11.12 as shown in FIG.
Make it stick out from 2.

Note that 101 and 102 in FIG. 4 are sparkers, both terminals of which are connected to the mounting board 91. through cords 111.112.
It is connected to transformers 121 and 122 fixed to 92.

Moreover, the pressure spray nozzles 11 and 12 are connected to the oil pipes 131 and 13.
2 to the electromagnetic pump 9, and the supply of fuel is controlled by electromagnetic valves 141, 142 on the output side of the electromagnetic pump 9.

In the embodiment configured as described above, the combustion air is delivered to the damper chamber 33 by the blower 7, and from here the damper port 4 is
1.42 through the ventilation chamber for hot water supply and bath kettle 31.
32 and each draft tube 21.22, while fuel is supplied from the electromagnetic pump 9 to each pressure spray nozzle 11.1 via oil supply pipes 131 and 132.
It is designed to erupt from 2.

Therefore, when the blower 7 and the electromagnetic pump 9 are driven, the combustion air flows into the draft tube 21.22 with an air population of 61.6
2 toward the stabilizers 51 and 52, the fuel is rotated by the swirling blades of the stabilizers 51 and 52, and is mixed into fine atomized fuel and combusted.

By the way, air flows from the damper chamber 33 to the air control damper 81,
Ventilation chamber 31 for hot water supply and bath kettle while being restricted by 82
．． 32, the dynamic pressure is reduced because each damper port 41, 42 and the side walls 4, 4 of the ventilation chamber are in a facing relationship.

The side walls 4, 4 of the ventilation chamber thus act as air diffusers, and each ventilation chamber 31.32 leads to the draft tube 21.
The air flow toward the draft tube 21.22 has a uniform flow velocity due to the air population 61.62 of the draft tube 21.22.

As a result, air drift within the draft tubes 21, 22 is prevented.

As described above, the present invention provides the damper ports 41, 42 in the ends of the partition walls 1, 2, in each draft tube 21.
Since the air inlets 61, 62 of 22 are bored at a location separate from the air inlets 61, 62, and are opposed to the side walls 4, 4 of the ventilation chamber parallel to the partition walls 1, 2, the air passes through the damper ports 41, 42. The dynamic pressure of the air is reduced, and drifting of the air within the draft tubes 21, 22 can be prevented, resulting in effects such as the prevention of one-sided combustion, incomplete flame holding, and combustion noise.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the air blowing structure of a conventional gun-type burner, Fig. 2 is a longitudinal sectional view of the same with the internal mechanism omitted, Fig. 3 is a perspective view of the embodiment of the present invention, and Fig. 4 is the same. 5 is a similar cross-sectional view, FIG. 6 is a similar longitudinal sectional view with internal mechanisms omitted, and FIG. 7 is a sectional view showing a water heater incorporating an embodiment of the present invention. FIG. 8 is a sectional view showing a bathtub incorporating an embodiment of the present invention. 1.2... Division wall, 3... Side wall, 4,
4. Side wall perpendicular to the curved compartment wall, 11.12...
・Pressure spray nozzle, 21.22...Draft tube, 31.32...Blower chamber, 33...
...Damper chamber, 41.42 ...Damper mouth, 51
, 52... Stabilizer, 61.62...
... Air population, 71.72 ... Combustion chamber, 7...
...Blower, 8...Fan casing, 8
01...Discharge port.

Claims (1)

[Scope of Claim for Utility Model Registration] Draft tubes through which pressure spray nozzles to be installed in the combustion chamber for hot water supply and the combustion chamber for bath kettle are respectively inserted are inserted into the ventilation chambers for hot water supply and bath kettle, respectively. A damper chamber is provided adjacently between the ventilation chambers, and the discharge port of the fan casing is communicated with the damper chamber, and the combustion air supplied from the blower is branched from the damper chamber, and is used for hot water supply through the damper port of the damper chamber. In the blowing structure of the gun type burner, the draft tubes are inserted into the vertical ends of the side walls of the blowing chamber, which are perpendicular to the dividing wall between the blowing chamber and the damper chamber. Further, each of the damper ports is formed in an end portion of the partition wall at a location apart from the air inlet of each draft tube, and is opposed to a side wall of the ventilation chamber parallel to the partition wall. Gun type burner feed. Wind structure.