JP4259690B2 - Hot air heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot air heater such as an oil fan heater that uses the heat of a heat source to discharge indoor air as hot air from a blow outlet and perform heating.
[0002]
[Prior art]
As shown in FIG. 3, a conventional warm air heater of this type has a main body case 1, a burner portion 2 that is disposed in the main body case 1 and burns fuel, and covers the burner 2 portion and is generated in the burner portion 2. The combustion cylinder 3 that guides the generated combustion gas upward, the blower 4 provided on the back surface of the main body case 1, and the combustion exhaust gas from the combustion cylinder 3 and the indoor airflow from the blower 4 are mixed. And a duct 5 for warm air, and an air outlet 6 provided on the front surface of the main body case 1 for discharging warm air from the duct 5.
[0003]
As shown in FIG. 4, a plurality (three or more) of louvers 7, 7 are disposed substantially horizontally at the lower portion of the outlet 6, and the downstream end is located forward of the louver 7 at the upper portion. Two protruding upper louvers 8, 8 are arranged obliquely downward.
[0004]
In the hot air heater configured as described above, the combustion gas generated by burning in the burner section 2 is guided upward by the combustion cylinder 3 disposed so as to cover the periphery of the burner section 2, and this combustion cylinder In the duct 5 covering 3, the air is mixed with the indoor air flow from the blower 4 and discharged as warm air into the room through the air outlet 6 to heat the room.
[0005]
[Problems to be solved by the invention]
In the hot air heater described above, the blower outlet 6 has a plurality of louvers 7 disposed substantially horizontally at the lower part, and two upper tiers with the downstream end protruding forward from the louver 7 at the upper part. By configuring the louvers 8 and 8 obliquely downward, the temperature of the hot air that is discharged from the lower part of the blower outlet 6 in a substantially horizontal direction is increased from the upper part of the blower outlet 6 obliquely downward. By holding down with low warm air, there is the advantage that the reach of hot air flowing near the floor surface can be extended, and the temperature difference between the upper part of the room and the floor surface can be reduced to eliminate unevenness in the room temperature. On the other hand, the high-calorie type with a large maximum heating output and a large maximum air flow has a problem that the floor temperature rises, causing discoloration of the tatami mat and warping of the flooring.
[0006]
The present invention has been made in view of the above-described circumstances, and warm air heating that can suppress the rise in floor temperature while extending the reach of warm air flowing near the floor and eliminating the unevenness of the room temperature. The purpose is to provide a machine.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the present invention described in claim 1, a main body case, a heat source provided in the main body case, for combusting fuel, and disposed on a back surface of the main body case, the heat source is heated. A blower that supplies wind for wind and a blower outlet that is provided on the front surface of the main body case and discharges warm air, and at the blower outlet, a plurality of middle stage louvers are provided substantially horizontally in the middle part, The upper louver with the downstream tip protruding forward from the middle louver is provided obliquely downward at the top, and the lower louver with the downstream tip protruding forward from the middle louver is provided substantially horizontally at the bottom. It is a configuration.
[0008]
Further, in the present invention described in claim 2, a main body case, a stand provided at the bottom of the main body case, a heat source provided in the main body case for burning fuel, and a back surface portion of the main body case are provided. And a blower for supplying warm air to the heat source, and a blower outlet provided on the front surface of the main body case for discharging warm air. The blower outlet includes a plurality of middle stage louvers at an intermediate portion. The upper louver with the downstream tip protruding forward from the middle louver obliquely downward at the top and the downstream tip protruded forward from the middle louver at the bottom A part louver is provided substantially horizontally, and at least one of the downstream end of the upper step louver and the downstream end of the lower step louver protrudes 8 mm or more from the main body case, and the amount of protrusion is defined by the outer contour of the table Within It is a configuration.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 and 2, reference numeral 10 denotes a hot air heater such as an oil fan heater. The hot air heater 10 includes a main body case 11, a mounting base 11 </ b> A attached to the bottom of the main body case 11, and a main body case. 11, a burner section 12 (heat source) that vaporizes and burns liquid fuel such as kerosene, and an open combustion that covers the burner section 12 and guides the combustion gas generated by the combustion of the burner section 12 upward A cylinder 13, a blower 14 that is disposed on the back surface of the main body case 11 and supplies warm air to the burner unit 12 and the combustion cylinder 13, and covers the combustion cylinder 13, and combustion exhaust gas from the combustion cylinder 13 And a duct 15 that mixes the indoor air flow from the blower 14 to warm air, and a blower outlet 16 that is provided at a substantially central portion of the front surface of the main body case 11 and that discharges warm air from the duct 15. Yes.
[0010]
The blower 14 includes a propeller fan 14A and a motor 14B that drives the propeller fan 14A. The motor 14B is fixedly supported at the center of the inner surface of a fan guard 17 attached to the back surface of the main body case 11. Reference numeral 18 denotes a heat shield plate disposed between the upper portion of the combustion cylinder 13 and the top surface portion 15A and the front surface portion 15B of the duct 15, and the heat shield plate 18 is connected to the top surface portion 15A and the front surface portion 15B of the duct 15. A cooling air passage Y through which a part of the air blown from the blower 14 flows is formed between them.
[0011]
Two middle-stage louvers 19, 19 are disposed substantially horizontally at the air outlet 16 at an intermediate portion thereof, and the downstream end is located forward of the middle-stage louver 19 at the top. Two upper louvers 20, 20 that are protruded are arranged to be inclined obliquely downward, and one lower louver that is located at the lowermost portion and has a downstream end protruding forward from the middle louver 19. 21 is arranged substantially horizontally.
[0012]
The upper step louver 20 is formed wider than the middle step louver 19 in the front-rear width (left and right width in FIG. 2), and the downstream end on the discharge side is 8 mm or more from the front of the middle step louver 19 and the body case 11. (About 8 to 13 mm) and the amount of protrusion is within the outline of the table 11A.
[0013]
The lower louver 21 is formed wider than the middle louver 19 in the front-rear width (left and right width in FIG. 2), and, like the upper louver 20, the downstream end serving as the discharge side is arranged at the middle louver 19 and the main body case. 11 is protruded by 8 mm or more (about 8 to 13 mm) from the front surface, and the protruding amount is within the outline of the mounting base 11A. The lower louver 21 has a front and rear width (in FIG. ) May be substantially equivalent, and the downstream end on the discharge side may protrude 8 mm or more (about 8 to 13 mm) from the front surface of the middle louver 19 and the body case 11.
[0014]
A control unit 22 controls the combustion of the burner unit 12 and the blower 14. The control unit 22 controls a fuel pump (not shown), the blower 14, and the like based on an operation condition signal input from the operation unit 23. Control is performed according to a preset sequence.
[0015]
In the above-described configuration, liquid fuel such as kerosene is sent to the burner unit 12 via an oil feed pipe (not shown) by a fuel pump (not shown), and the burner unit 12 is combusted. Combustion gas generated by the combustion of the burner portion 12 flows upward in the combustion cylinder 13 and is mixed with the indoor air flow from the blower 14, and is blown by the middle louver 19 and the lower louver 21 as hot air having a high temperature. It is discharged almost horizontally from the middle and lower part of the outlet 16 to heat the room. Further, a part of the indoor air flow from the blower 14 flows through the cooling air passage Y and goes to the upper part of the air outlet 16 while cooling the top surface portion 15A and the front surface portion 15B of the duct 15, and is 2 as hot air having a low temperature. The sheet is discharged obliquely downward from the upper part of the air outlet 16 by the upper louver 20 of the sheet. Then, the control unit 22 controls the fuel pump (not shown), the blower 14 and the like based on the operation conditions set by the operation unit 23, and performs operation control such as variable blast volume and combustion volume.
[0016]
According to the above-described embodiment, the air outlet 16 is provided with the two middle stage louvers 19, 19 located substantially in the middle of the air outlet 16, and at the upper part with the downstream front end located in the middle. Two upper stage louvers 20, 20 that protrude forward from the part louver 19 are disposed obliquely downward, and are located at the lowermost part so that the downstream end protrudes forward from the middle louver 19. In addition, since the single lower louver 21 is arranged substantially horizontally, the two middle louvers 19 are heated by the low temperature warm air directed obliquely downward by the two upper louvers 20, 20. And the rise of hot air with high temperature directed in the horizontal direction by one lower louver 21 is suppressed, the reach of hot air flowing near the floor surface is extended, and the temperature difference between the indoor upper part and the floor surface is increased. Less.
[0017]
Further, since the downstream end of the lower louver 21 protrudes forward from the middle louver 19, the flow rate of hot air discharged from the lowermost part of the outlet 6 in a substantially horizontal direction is increased, and the high temperature The wind can be prevented from approaching the floor more than necessary, an increase in the floor temperature in front of the outlet 6 can be suppressed, and tatami mat discoloration and floor warping can be prevented.
[0018]
Further, since the downstream end of the upper louver 20 and the downstream end of the lower louver 21 protrude 8 mm or more from the front surface of the main body case 11, and the protruding amount is within the outline of the mounting base 11A, Even if the air outlet 16 is about to be blocked for some reason, it can be prevented from being completely blocked by the mounting base 11A, the upper louver 20 tip, and the lower louver 21 tip, and safety can be improved.
[0019]
【The invention's effect】
As described above, according to the first aspect of the present invention, the main body case, the heat source provided in the main body case and combusting the fuel , disposed on the back surface of the main body case, the heat source A blower for supplying warm air and a blower outlet provided on the front surface of the main body case for discharging warm air are provided, and a plurality of middle louvers are provided substantially horizontally in the middle of the blower outlet. The upper step louver with the downstream tip protruding forward from the middle step louver is provided obliquely downward at the top, and the lower step louver with the downstream tip protruding forward from the middle step louver at the bottom is substantially horizontal. Because it is provided, the warm air of low temperature that is directed diagonally downward suppresses the rise of hot air that is directed in the horizontal direction and increases the reach of the warm air that flows near the floor surface. The temperature at the top of the floor and near the floor Not only can the difference be reduced and the heating effect improved, but the downstream end of the lower louver protrudes forward from the middle louver, so that the temperature discharged from the lowermost part of the outlet in a substantially horizontal direction. The flow velocity of the wind can be increased, hot hot air does not approach the floor more than necessary, and thermal damage to the floor such as discoloration of the tatami in front of the outlet and warping of the flooring can be prevented.
[0020]
According to the second aspect of the present invention, the main body case, a mounting base provided at the bottom of the main body case, a heat source provided in the main body case for burning fuel, and a back surface portion of the main body case And a blower for supplying warm air to the heat source, and a blower outlet provided on the front surface of the main body case for discharging warm air. The louver is provided approximately horizontally, the upper louver with the downstream tip protruding forward from the middle louver is obliquely downward, and the downstream tip is projected forward from the middle louver at the bottom. A lower step louver is provided substantially horizontally, and at least one of the downstream end of the upper step louver and the downstream end of the lower step louver protrudes 8 mm or more from the main body case, and the protruding amount is set to Within the outline Since a configuration, in addition to the effect of claim 1, even if the outlet is about to be closed, table and the upper portion louver distal or lower portion louver at least either of the tip and the at Fusagara completely Can be kept safe.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a schematic configuration of a hot air heater showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the main part of the hot air heater, similarly.
FIG. 3 is a cross-sectional view of a schematic configuration of a conventional hot air heater.
FIG. 4 is a cross-sectional view of a main part of a conventional hot air heater.
[Explanation of symbols]
11 Body Case 11A Stand 12 Burner (heat source)
13 Combustion cylinder 14 Blower 15 Duct 16 Outlet 18 Heat shield 19 Middle louver 20 Upper louver 21 Lower louver Y Cooling air passage

Claims (2)

A main body case, a heat source provided in the main body case for burning fuel , a blower disposed on the back surface of the main body case for supplying warm air to the heat source, and provided on a front surface of the main body case. The upper stage is provided with a plurality of middle-stage louvers provided in the middle part of the blower outlet substantially horizontally and with the downstream end protruding forward from the middle-stage louver. A warm air heater characterized in that a lower louver is provided substantially horizontally, with a lower louver provided obliquely downward and with a downstream end protruding forward from the middle louver at the bottom. A main body case, a pedestal provided at the bottom of the main body case, a heat source provided in the main body case for combusting the fuel, and disposed on a back surface portion of the main body case, and for supplying warm air to the heat source. A blower to be supplied, and a blower outlet provided on the front surface of the main body case for discharging warm air. The blower outlet is provided with a plurality of middle stage louvers substantially horizontally in the middle part and a downstream tip at the upper part. An upper louver projecting forward from the middle louver is provided obliquely downward, and a lower louver having a downstream end projecting forward from the middle louver is provided substantially horizontally at the lowermost portion, and the upper louver of the downstream-side tip and the lower part the downstream side tip of the louver, the at least one is projected 8mm or more than the main body case, and warm-air heating apparatus, characterized in that the amount of projection within the outline of table .

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