JPH0221724Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an oil hot air heater that exhausts combustion noise from a burner section to the outside of the machine and to the rear side.

[Conventional technology]

Conventional oil hot air heaters include those shown in Figures 1 and 2. In the figure, 1 is a burner part with a flame port 1a open in the hot air wind tunnel A, 2 is an oil tank that contains fuel, 3 is an oil tray that keeps the oil supplied from this oil tank 2 at a constant level, and 4 is a An oil supply pipe 5 connecting the oil pan 3 and the burner section 1 is a combustion tube that surrounds the flame port 1a of the burner section 1 and protrudes into the wind tunnel A, and has a baffle plate 5a at its upper end opening. 6 is a partition plate that divides the inside of the wind tunnel A into upper and lower parts, and this partition plate 6
A cold air wind tunnel B is formed between the guide plate 7 and the guide plate 7. 8 is the casing of the heater, 8a is the front upper case, 8b is the front lower case, and 8c is the back case. 9 is a propeller fan arranged on the back side of the wind tunnel A and the partition plate 6, and 10 is a motor that rotationally drives this fan 9, which is installed on the back plate 10a, and this back plate 10a is screwed to the back case 8c. be. Reference numeral 11 denotes a hot air blowing grill, which is provided at a hot air blowing outlet 12 formed on the front side. Reference numeral 13 denotes a cold air outlet grill provided at the cold air outlet 14 above the hot air outlet 12 . 15 is the base plate of the heater.

Next, the operation will be explained. High-temperature combustion gas from the burner section 1 exits from the combustion tube 5 to the back side of the wind tunnel A by the baffle plate 5a. This combustion gas is mixed with cold air from the propeller fan 9 to become hot air, which is blown into the room from the hot air outlet 12.
On the other hand, a part of the cold air from the prop fan 9 passes through the cold air wind tunnel B and blows out from the cold air outlet 14, and the rise of the warm air is suppressed and flows along the floor surface, reducing the temperature difference between the upper and lower room temperatures. There is. Incidentally, the combustion noise generated from the burner section 1 passes through the combustion tube 5 together with high-temperature gas, reaches the wind tunnel A, hits the horizontal surface of the partition plate 6, and is emitted into the room from the hot air outlet 12 along with the air blown by the propeller fan 9. Therefore, the combustion noise caused a lot of noise, which was a problem.

[Summary of the invention] This invention was made in order to eliminate the drawbacks of the conventional ones as mentioned above.The partition plate that separates the hot air wind tunnel and the cold air wind tunnel is arranged so that the part directly above the combustion tube is aligned with the horizontal plane. To provide an oil hot air heater whose back side is inclined at a predetermined angle to emit part of the combustion sound of a burner part to the back side of a casing, thereby reducing noise from a hot air outlet. It is an object.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings. In Figures 3 and 4, numbers 1 to 15 indicate the first and second
Since the parts are the same as those shown in the figure, the explanation will be omitted. This invention is an improved mounting shape of the partition plate 6, in which a portion of the partition plate 6 directly above the combustion cylinder is inclined with respect to the horizontal plane so that its rear side is raised by a predetermined angle θ. That is, with this configuration, the combustion noise generated by the burner section 1 reaches the hot air wind tunnel A from the combustion tube 5, where it hits the partition plate 6 and is dispersed between the front side and the back side. Ru. Some of the combustion noise that was dispersed to the rear side was caused by the propeller fan 9.
The sound is emitted to the outside of the machine through a vent hole (not shown) in the rear panel 10a. Therefore, hot air outlet 12
The amount of combustion noise emitted from the heater is reduced, and the noise experienced by the human body while the heater is operating can be significantly reduced.

[Effect of idea]

As described above, according to this invention, the part directly above the combustion tube of the partition plate that separates the hot air wind tunnel and the cold wind wind tunnel is tilted at a predetermined angle with the back side of the partition plate at a high angle with respect to the horizontal plane. A part of the combustion sound can be emitted to the rear side of the outside of the machine, which has the effect of significantly reducing the noise emitted from the hot air outlet and reducing the discomfort experienced by the human body.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of a conventional oil hot air heater, Figure 2 is a side sectional view of the same, Figure 3 is a partially cutaway front view of the oil hot air heater according to this invention, and Figure 4 is a partially cutaway front view of a conventional oil hot air heater. Similarly, it is a side sectional view. 1...Burner part, 5...Combustion tube, 6...Partition plate, 9...Propeller fan, 12...Hot air outlet, 14...Cold air outlet. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In an oil hot air heater in which a combustion tube is protruded into the wind tunnel of a heater casing that has a propeller fan for blowing air on the back side and a hot air outlet on the front side, and a burner part is provided in the combustion tube. The inside of the wind tunnel is divided by a partition plate into a cold air wind tunnel on the upper side and a warm air wind tunnel on the lower side, and a portion of the partition plate directly above the combustion cylinder is inclined so that its back side is raised at a predetermined angle with respect to a horizontal plane. This oil hot air heater is characterized by: