JPH07117296B2 - Oil combustor - Google Patents

Description

TECHNICAL FIELD The present invention relates to an oil combustor that uses oil as a fuel for heating and the like.

2. Description of the Related Art Conventionally, this type of oil combustor B has a structure as shown in FIGS. 3 and 4. That is, it is composed of a combustion burner 2 incorporated inside the exterior 1, a heat exchanger 3, a refueling tank 4, and a blower 6 for hot air that protrudes to the outside of the exterior 1 and is fixed to a rear surface 5 of the exterior. The blower 6 for warm air is arranged on the side of the exchanger 3, and the impeller 8 of the blower 6 for warm air is arranged on the rear side of the heat exchanger 3, that is, on the upstream side so as to face the heat exchanger 3. It was The combustion burner 2 is located inside the heat exchanger 3. On the other hand, the blower 6 for warm air has a bell mouth 7 opened to the exterior rear surface 5, a propeller-type impeller 8 concentrically positioned inside the bell mouth 7, a motor 9 for driving the impeller 8, and a temperature controller. A fixed leg for fixing the blower 6 for the wind to the exterior rear surface 5 and a blower guard 12 that also serves as a guard for preventing foreign matter from entering the impeller 8 and an air suction port 11 for the impeller 8
Uses the entire back and sides of the blower guard 12. Furthermore, a dustproof net 13 that suppresses the suction of dust etc. is placed on the inner surface of the blower guard 12, and the blower guard 12
A part of 12 is projected rearward to form a stopper 14. In addition, a wind tunnel 15 is provided around the outer periphery of the heat exchanger 3 in order to effectively contact the air flow with the heat exchanger 3, and a heat shield plate 16 is provided between the wind tunnel 15 and the fuel tank 4. It is arranged to block heat from the heat exchanger 3 and the like.
Further, a warm air discharge port 17 having a deflecting plate 18 that deflects the direction of the warm air to be discharged is provided on the front surface of the exterior 1. In addition,
FIG. 4 shows a sectional view taken along the line II-II in FIG. 3 and solid arrows show the flow of air.

In the oil combustor having the above structure, when the motor 9 is driven and the impeller 8 is rotated, the air outside the exterior 1 is sucked into the exterior 1 from the intake ports 11 on the rear and side surfaces of the blower guard 12, and heat is exchanged. A flow of hot air discharged from the hot air discharge port 17 to the outside of the exterior 1 again via the vessel 3 is formed.

However, in the case of the propeller type impeller 8 having the above-described structure, most of the air flowing into the impeller 8 is sucked from the suction port 11 on the rear surface of the blower guard 12, and a part of the blower is blown. It is sucked from the suction port 11 on the side surface of the guard 12.
For this reason, for example, when the rear surface of the combustion equipment is used close to the wall surface of the house, the air flows backward, that is, the hot air outlet.
There was a problem that it became a very dangerous state such as flowing from 17 to the suction port 11 direction. For this reason, it is the current situation that a minimum space where backflow does not occur is maintained on the rear side of the blower guard 12 by providing a stopper 14 or the like, but the amount of inflow air from the suction port 11 on the rear surface is considered. However, there is a problem in that it must always be used at a considerable distance from the wall surface because it significantly decreases.

The present invention solves such a conventional problem, and is a centripetal type in which a blower sucks air from the outer peripheral direction of the impeller toward the center of the impeller and discharges the air in a direction substantially parallel to the rotation axis of the impeller. By providing the suction port at the position facing the outer circumference of the impeller of the blower guard, the oil combustor that is not affected by the space condition behind the combustor and can always maintain safety is provided. The purpose is to do.

Means for Solving the Problems In order to solve the above problems, an oil combustor of the present invention is a blower for warm air configured by a centripetal impeller fixed to a rear surface of an exterior, and a heat exchanger incorporated in the exterior. And a refueling tank, wherein the refueling tank is disposed laterally of the heat exchanger, and the heat exchanger is disposed on the downstream side of the warm air blower so as to face the impeller of the warm air blower, Behind the exterior rear surface that opens the bell mouth, a fan guard is provided so as to form an air passage between the bell mouth and the exterior surface, and the warm air blower is arranged concentrically with the bell mouth and in the air passage. The suction port is located outward of the impeller in the radial direction, and the rear surface of the exterior and the blower guard constitute the suction port.

Action The petroleum combustor of the present invention has the above-mentioned configuration to suck hot air from the outer peripheral direction of the impeller toward the impeller center direction, so that it is not affected by the space condition on the rear side of the oil combustor. The required amount of warm air can always be secured, and the intake air for warm air can forcibly cool the refueling tank, which greatly suppresses the temperature rise of the refueling tank and greatly improves safety. It can be improved.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side longitudinal sectional view showing an oil combustor according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line I-I of FIG.

As shown in FIGS. 1 and 2, the oil combustor A has an exterior.
A combustion burner 22, a heat exchanger 23, a refueling tank 24, and a blower 26 for warm air that protrudes to the outside of the exterior 21 and is fixed to the exterior rear surface 25. The refueling tank 24 is a heat exchanger. The hot-air blower 26 is arranged on the side of 23, and the hot-air blower 26 is arranged behind the heat exchanger 23, that is, on the upstream side so that the impeller 28 of the warm-air blower 26 faces the heat exchanger 23. The combustion burner 22 is located inside the cylindrical heat exchanger 23. On the other hand, the warm-air blower 26 also serves as a fixed leg (not shown) that fixes the warm-air blower 26 to the exterior rear surface 25, and a guard that suppresses foreign matter and the like from entering the warm-air blower 26, Moreover, at the same time as closing the rear of the impeller 28, a blower guard 32 arranged behind the heat exchanger 23 and the refueling tank 24 so as to form a ventilation path 36 with the outer rear surface 25, and a bell opened on the outer rear surface 25. Placed concentrically inside mouse 27,
In addition, it is configured with the impeller 28 located inside the ventilation path 36, and sucks air from the outer peripheral direction of the impeller 28 toward the impeller center and discharges the air in a direction substantially parallel to the rotation axis of the impeller 28. I am using a centripetal blower. Further, there is provided an intake port 30 which is located on the outer side of the impeller 28 in the radial direction and which is constituted by the exterior rear surface 25 and the blower guard 32. In addition, the refueling tank
A cooling air passage 37 is provided between the outer casing 24 and the outer casing 21, a cooling air intake port 38 is provided in the outer casing 21 around the refueling tank 24, and a cooling air discharge port 39 is provided in the rear face 25 of the refueling tank 24. The exterior of the exterior 21 is communicated with the ventilation passage 36 of the warm air blower 26. In addition, the heat exchanger 23 is provided around the heat exchanger 23.
A wind tunnel 35 is provided in order to effectively contact the air flow with the air flow, and a deflection plate for deflecting the hot air to be discharged is provided on the front surface of the exterior 21.
A hot air outlet 34 having 33 is provided. Incidentally, 29 is a motor for driving the impeller 28, 31 is a dustproof net provided inside the suction port 30, and solid arrows show the flow of air.

In the oil combustor shown in FIGS. 1 and 2, the motor
When 29 is driven to rotate the impeller 28, the fan guard 32 and the exterior rear surface 25 are formed, and the air outside the exterior 21 is blown from the intake port 30 located radially outward of the impeller 28.
It flows to the heat exchanger 23 through the ventilation passage 36 formed between the outer surface 32 and the exterior rear surface 25, forms a flow of hot air discharged again from the hot air outlet 34 to the outside of the exterior 21, and is used for heating. It is a thing. On the other hand, the warm air blower 26 uses a centripetal blower that sucks air from the outer peripheral direction of the impeller 28 toward the impeller center and discharges the air in a direction substantially parallel to the rotation axis of the impeller 28. Even if there is no inflow of air from the rear of the vehicle 28, sufficient air blowing performance can be obtained. Furthermore, when the blower 26 for warm air is in operation, the pressure in the ventilation passage 36 is lower than that of the outside of the exterior 21, so that air is taken in from the cooling air intake port 38 provided in the exterior 21 and the inside of the cooling ventilation passage 37. A flow from the cooling air discharge port 39 to the ventilation passage 36 is formed, and the refueling tank 24 can be forcibly cooled.

Effects of the Invention As described above, the oil combustor of the present invention has the following effects. That is, (1) a centripetal fan is arranged between the heat exchanger and the oil supply tank, and is constituted by a fan guard and a rear surface of the exterior, and air outside the exterior is drawn from an intake port located radially outward of the impeller. Since the air is sucked, it is possible to always secure a necessary air flow rate without being affected by the space condition behind the combustor. Therefore, the rear surface of the combustor can be used in close contact with the wall surface of a house, etc.
The convenience can be greatly improved.

(2) A cooling air passage is formed between the refueling tank and the exterior, and the refueling tank is forcibly cooled by using part of the air sucked from the impeller radial direction by the centripetal fan of the warm air blower. Therefore, the safety of the refueling tank against temperature rise can be significantly improved, a heat shield plate and the like are not required, and the structure can be simplified.

[Brief description of drawings]

FIG. 1 is a side vertical sectional view showing an oil combustor of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line I-I of FIG. 1, and FIG. 3 is a side vertical sectional view showing a conventional example. , FIG. 4 shows a sectional view taken along line II-II in FIG. A: Oil combustor, 21 ... Exterior, 23 ... Heat exchanger, 24 ...
… Refueling tank, 25 …… Exterior rear surface, 26 …… Warm air blower,
28 …… impeller, 30 …… inlet, 32 …… blower guard, 34
...... Hot air outlet.

Claims (1)

[Claims] 1. A warm air blower composed of a centripetal type impeller fixed to a rear surface of an exterior, and a heat exchanger and an oil supply tank built in the exterior, the oil supply tank being provided on a side of the heat exchanger. And a heat exchanger is arranged on the downstream side of the warm air blower so as to face the impeller of the warm air blower, and ventilation is provided between the bellows rear side of the exterior rear surface and the exterior rear surface. A blower guard is provided so as to form a passage, the warm air blower is arranged concentrically with the bell mouth and in the ventilation passage, and is located outside in the radial direction of the impeller, and the outer rear surface and the blower. An oil combustor with a guard and an inlet.