JP2001074312A - Hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot air heater to suppress the increase of a floor temperature while an arrival distance of hot air flowing near a floor is increased and unevenness in an indoor temperature is prevented from occurring. SOLUTION: This hot air heater comprises a body case 11, a heat source 12 situated at a body case 11, a blower 14 to feed air for hot air to the heat source 12, and an air outlet 16 formed in the front of the body case 11 and discharging hot air. A plurality of intermediate stage louvers 19 are approximately horizontally situated in the air outlet 16. An upper stage louver 20 having a tip on the downstream side protruding further frontward than the intermediate stage louver 19 is situated obliquely downward at an upper part, and a lower stage louver 21 having a tip on the downstream side protruding more frontward than the intermediate stage louver 19 is approximately horizontally situated at a lowermost part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater such as an oil fan heater for heating by discharging indoor air as hot air from an air outlet using heat of a heat source.

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional hot air heater of this type covers a main body case 1, a burner portion 2 disposed in the main body case 1 for burning fuel, and a cover for the burner 2 portion. Combustion cylinder 3 that guides combustion gas generated in burner section 2 upward
A blower 4 provided on the back of the main body case 1, a duct 5 that covers the combustion tube 3 and mixes the combustion exhaust gas from the combustion tube 3 with the indoor air flow from the blower 4 to generate hot air,
An outlet 6 is provided on the front surface of the main body case 1 and discharges warm air from the duct 5.

[0003] Then, as shown in FIG.
In the lower part, a plurality of (three or more) louvers 7, 7 are arranged substantially horizontally, and two upper louvers 8, 8 having a downstream end protruding forward from the louver 7, are provided at the upper part. It is arranged diagonally downward.

[0004] In the warm air heater configured as described above, the combustion gas generated by the combustion in the burner section 2 is guided upward by a combustion tube 3 arranged so as to cover the periphery of the burner section 2. In the duct 5 covering the combustion tube 3, the air is mixed with the indoor air flow from the blower 4 and discharged as warm air from the outlet 6 into the room to heat the room.

[0005]

In the above-mentioned hot air heater, a plurality of louvers 7 are disposed substantially horizontally at the lower part of the outlet 6, and the downstream end is disposed at the upper part forward of the louver 7. The two upper louvers 8, 8 projecting obliquely downward are arranged obliquely downward, so that the rise of high-temperature hot air discharged in a substantially horizontal direction from the lower part of the outlet 6 can be reduced. By holding down with low-temperature hot air that is discharged obliquely downward from the upper part, the reaching distance of warm air flowing near the floor is extended, and the temperature difference between the upper part of the room and near the floor is reduced, resulting in uneven room temperature. There is an advantage that can be resolved, but on the other hand,
The high-calorie type, which has a large maximum heating output and a large air flow rate, has a problem that the floor temperature rises, causing discoloration of the tatami mats and warpage of the floor material.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and it is possible to increase the reach of warm air flowing near the floor, eliminate the unevenness in room temperature, and suppress the rise in floor temperature. It aims to provide a hot air heater.

[0007]

In order to solve the above problems, according to the first aspect of the present invention, a main body case, a heat source provided in the main body case, and a wind for warm air are supplied to the heat source. Supplied blower and installed on the front of the body case,
An outlet for discharging warm air, the outlet having a plurality of middle louvers provided substantially horizontally at an intermediate portion, and an upper portion having a downstream end projecting forward from the middle louver at an upper portion thereof. The louver is provided obliquely downward, and a lower louver having a downstream end protruding forward from the middle louver at the lowermost portion is provided substantially horizontally.

Further, according to the present invention, a main body case and a table provided at the bottom of the main body case are provided.
A heat source provided in the main body case, a blower for supplying hot air to the heat source, and a front surface of the main body case,
An outlet for discharging warm air, the outlet having a plurality of middle louvers provided substantially horizontally at an intermediate portion, and an upper portion having a downstream end projecting forward from the middle louver at an upper portion thereof. A louver is provided obliquely downward, and a lower louver having a downstream end protruding forward from the middle louver at the lowermost portion is provided substantially horizontally, and a downstream end of the upper louver and a downstream end of the lower louver are provided. Of these, at least one of them is protruded by 8 mm or more from the main body case, and the protruding amount is within the outer contour of the mounting table.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
A description will be given based on FIG. 1 and 2,
Reference numeral 10 denotes a warm air heater such as an oil fan heater. The warm air heater 10 includes a main body case 11 and a main body case 1.
1, a burner section 12 (heat source) disposed in the main body case 11 for vaporizing and burning a liquid fuel such as kerosene, and covering the burner section 12 and burning the burner section 12 A combustion cylinder 13 that is open at the top and guides the combustion gas generated at the upper part, and a rear part of the main body case 11,
A blower 14 for supplying hot air to the burner section 12 and the combustion cylinder 13;
A duct 15 that mixes the combustion exhaust gas from the fan 3 with the indoor air flow from the blower 14 to generate hot air, and an outlet that is provided at a substantially central portion on the front surface of the main body case 11 and that discharges the hot air from the duct 15 16 are provided.

The blower 14 has a propeller fan 14A.
And a motor 14B for driving 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 of the main body case 11. 18 is the upper part of the combustion tube 13 and the duct 1
5 is a heat shield plate arranged between the top surface portion 15A and the front surface portion 15B of the duct 5, and the space between the heat shield plate 18 and the top surface portion 15A and the front surface portion 15B of the duct 15 blows air from the blower 14. Is formed.

The air outlet 16 has two middle louvers 19, 19 located at an intermediate portion thereof in a substantially horizontal manner, and a downstream end located at an upper portion thereof and having a downstream end located at the middle portion.
9, two upper louvers 20, 2 projecting forward.
0 is disposed obliquely downward, and one lower louver 21 located at the lowermost position and having a downstream end protruding forward from the middle louver 19 is disposed substantially horizontally.

The upper louver 20 is a middle louver 1.
9 is formed wider than the front-rear width (the left-right width in FIG. 2), and the downstream end serving as the discharge side protrudes at least 8 mm (about 8 to 13 mm) from the front surface of the middle louver 19 and the main body case 11; , The amount of protrusion is within the outer contour of the table 11A.

The lower louver 21 is a middle louver 1.
9, the front end of the downstream side, which is the discharge side, is at least 8 mm (approximately 8 to 10 mm) from the front of the middle louver 19 and the main body case 11 in the same manner as the upper louver 20. 13mm) Protrude and set the amount of protrusion
1A, but the lower louver 21
The front and rear widths (left and right widths in FIG. 2) of the middle louver 19 are substantially equal to each other, and the downstream end on the discharge side is the middle louver 1.
9 mm and 8 mm or more from the front of the main body case 11 (about 8 to 13
mm) You may make it protrude.

Reference numeral 22 denotes the burner unit 12 and the blower 1.
The control unit 22 controls a fuel pump (not shown), the blower 14 and the like in a preset sequence based on an operation condition signal input from the operation unit 23. Has become.

In the above configuration, liquid fuel such as kerosene is sent to the burner section 12 by a fuel pump (not shown) through an oil feed pipe (not shown), and the burner section 12 is burned. The combustion gas generated by the combustion of the burner section 12 flows upward in the combustion cylinder 13 and is mixed with the indoor air flow from the blower 14, and is blown as high-temperature hot air by the middle louver 19 and the lower louver 21. It is discharged substantially horizontally from the middle part and lower part of the outlet 16 to heat the room. In addition, blower 1
A part of the indoor air flow from No. 4 flows to the upper part of the air outlet 16 while flowing through the cooling air passage Y and cooling the top surface portion 15A and the front surface portion 15B of the duct 15. The air is discharged obliquely downward from the upper part of the outlet 16 by the partial louver 20. Then, the control unit 22 controls the fuel pump (not shown), the blower 14, and the like based on the operating conditions set by the operation unit 23, and performs operation control such as variable ventilation and combustion.

According to the above-described embodiment, the air outlet 16 is provided with two middle louvers 19 located at an intermediate portion thereof,
19 is disposed substantially horizontally, and two upper-stage louvers 20, 20 which are located at the upper portion and whose downstream end protrudes forward from the middle-stage louver 19, are arranged obliquely downward and inclined. The lower end is located at the lowermost position,
Since one lower louver 21 protruding further forward is disposed substantially horizontally, low-temperature warm air directed obliquely downward by the two upper louvers 20, 2 is used. The middle louver 19 and one lower louver 21 suppress the rise of the high-temperature hot air directed in the horizontal direction, extend the reach of the hot air flowing near the floor, and increase the indoor upper and lower surfaces. The temperature difference with the vicinity can be reduced.

Further, since the downstream end of the lower louver 21 is made to protrude forward from the middle louver 19, the flow velocity of the warm air discharged in the substantially horizontal direction from the lowermost portion of the outlet 6 is increased. The high-temperature warm air can be prevented from approaching the floor surface more than necessary, the rise of the floor temperature in front of the outlet 6 can be suppressed, and discoloration of the tatami mat and warping of the floor material can be prevented.

The downstream end of the upper louver 20 and the downstream end of the lower louver 21 are made to protrude at least 8 mm from the front surface of the main body case 11, and the amount of projection is set to
Since the configuration is such that it is within the outer shell of A, even if the outlet 16 is closed for any reason, it is possible to prevent the table 11A and the upper end of the upper louver 20 and the lower end of the lower louver 21 from being completely closed. Can be increased.

[0019]

As described above, according to the first aspect of the present invention, a main body case, a heat source provided in the main body case, and a blower for supplying warm air to the heat source. And a blow-off port provided on the front surface of the main body case and discharging hot air. In the blow-out port, a plurality of middle-stage louvers are provided substantially horizontally at an intermediate portion, and a downstream end is provided at an upper portion at a middle-stage portion. The upper louver protruding forward from the louver is provided diagonally downward, and the lower louver with the downstream end protruding forward from the middle louver is provided almost horizontally at the bottom, so it is obliquely downward. The low-temperature warm air directed in the horizontal direction suppresses the rise of the high-temperature warm air directed in the horizontal direction, and extends the reach of the warm air flowing near the floor to increase the temperature between the upper part of the room and the vicinity of the floor. Reduce the difference and improve the heating effect By making the downstream end of the lower louver protrude forward from the middle louver instead of the louver, it is possible to increase the flow velocity of the warm air discharged in a substantially horizontal direction from the lowermost part of the air outlet, thereby increasing the temperature. The warm air does not approach the floor surface more than necessary, and it is possible to prevent the floor surface from being damaged by heat such as discoloration of the tatami mat in front of the outlet and warping of the floor material.

According to the present invention described in claim 2,
A main body case, a table provided at the bottom of the main body case, a heat source provided in the main body case, a blower for supplying wind for hot air to the heat source, and a hot air blower provided at the front of the main body case. And an air outlet for discharging air.
A plurality of middle louvers are provided substantially horizontally in the middle part, and an upper louver with the downstream end protruding forward from the middle louver is provided diagonally downward at the upper part, and the downstream end is provided with the middle louver at the lowest part. A lower louver protruding forward is provided substantially horizontally, and at least one of a downstream end of the upper louver and a downstream end of the lower louver is protruded by 8 mm or more from the main body case, and Since the projecting amount is within the outer contour of the mounting table, in addition to the effect according to claim 1, even if the outlet is closed, the mounting table and the distal end of the upper louver or the distal end of the lower louver are required. At least one of them can be prevented from being completely blocked, and safety can be maintained.

[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 sectional view of a main part of the hot air heater.

FIG. 3 is a cross-sectional view of a schematic configuration of a conventional hot air heater.

FIG. 4 is a sectional view of a main part of a conventional hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Main body case 11A Stand 12 Burner part (heat source) 13 Combustion cylinder 14 Blower 15 Duct 16 Outlet 18 Heat shield plate 19 Middle louver 20 Upper louver 21 Lower louver Y Cooling air path

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoichi Uchida 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Inside Sanyo Electric Co., Ltd. (72) Hideo Okada 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. F term (reference) 3L028 AA02 AB05 AC06 3L037 BC02 BC06

Claims (2)

[Claims] 1. A main body case, a heat source provided in the main body case, a blower for supplying warm air to the heat source, and an air outlet provided on a front surface of the main body case and discharging hot air. In the outlet, a plurality of middle louvers are provided substantially horizontally at an intermediate portion, and an upper louver having a downstream end protruding forward from the middle louver is provided obliquely downward at an upper portion. A warm air heater, wherein a lower louver having a downstream end protruding forward from the middle louver is provided substantially horizontally at a lower portion. 2. A main body case, a table provided at a bottom of the main body case, a heat source provided in the main body case,
A blower for supplying hot air to the heat source, and an outlet provided on the front surface of the main body case for discharging hot air, the outlet having a plurality of middle stage louvers at an intermediate portion substantially horizontally. In addition, the upper part louver with the downstream end protruding forward from the middle part louver at the upper part is provided diagonally downward,
At the lowermost part, a lower louver in which the downstream end projects forward from the middle louver is provided substantially horizontally, and at least one of the downstream end of the upper louver and the downstream end of the lower louver is provided. The hot air heater is characterized in that it protrudes by 8 mm or more from the main body case, and the protruding amount is within the outline of the table.