JP2003042570A - Warm air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniform indoor temperature distribution. SOLUTION: A front panel 2a of a main body case 2 is formed so as to bulge out into a half-round. Two rectangular current plates 7L and 7R are installed vertically between the inside of the front panel 2a and a fan 4 so as to open forward into a truncated chevron shape viewed from above. Warm air is delivered through a louver 6 of an air outlet 2d, while being distributed to the left, right and center by the current plates 7L and 7R. In this time, the warm air flowing both left and right sides is delivered radially in a state that the warm air is guided by the current plates 7, furthermore, the warm air is spread out more widely from side to side by the louver 6 having an upper slanting part 6a. Consequently, a delivery angle of the warm air becomes large, thereby, an entire room is heated.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater such as a gas fan heater. 2. Description of the Related Art Conventionally, a hot air heater such as a gas fan heater has a plurality of horizontal louvers at upper and lower stages at a hot air outlet formed in a front panel of a substantially rectangular parallelepiped main body case. Therefore, it is known to heat a room by blowing out hot air heated by a heating source such as a burner or an electric heater with a fan. [0003] However, in such a hot-air heater, since the hot air is blown straight to the front of the body, the hot air is difficult to spread throughout the room and the temperature distribution in the room is uneven. It was not very comfortable for the user. Therefore, in order to reduce indoor temperature unevenness, a plurality of movable rectifying plates are provided in parallel between the fan and the front panel,
As shown in FIG. 6, a hot air heater that swings the rectifying plate to the left or right, and as shown in FIG. A hot air heater that guides the air to the left and right sides and sends it out from between the horizontal louvers 22 has been considered. However, even when the current plate is provided in this manner, the inner left and right side walls 21R, 21R,
Hot air hits 21L, and the blowing angle is narrow,
The left and right sides of the hot air heater remained cool. In particular, in the outlet passage 23 on the right side of FIG. 6, even if the right fixed rectifying plate 20R is provided, the warm air does not spread much to the right side because the warm air also flows along the right side wall 21R. Hot air heaters with horizontal louvers inclined upward or downward are also known,
With such a device, the direction of the hot air in the vertical direction can be changed, but the direction in the horizontal direction cannot be changed. An object of the present invention is to solve the above-mentioned problems and to make the temperature distribution in a room uniform. According to a first aspect of the present invention, there is provided a warm air heater having a heating source, an air supply device for sending air to the heating source, and a heating device. In a warm air heater equipped with a blower that supplies wind from the outlet to the outside of the body, a front panel of the main body case is formed in a semi-cylindrical shape,
The outlet is formed so as to extend to the vicinity of the left and right ends of the front panel, and the outlet is provided with an arc-shaped louver extending in a substantially horizontal direction along a semi-cylindrical surface of the front panel, and the upper surface of the louver is radiated. The gist of the present invention is that the conical surface is formed by inclining upward in the direction. [0005] In the hot air heater according to the first aspect of the present invention having the above structure, when air heated by the heating source is sent by the blower, the air is conically inclined upward in the radial direction. Louver, that is, a mortar-shaped louver whose outer periphery is formed higher than its inner periphery, is sent out from the air outlet upward while spreading and turning left and right outward along its conical surface to heat the entire room . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of a hot air heater according to the present invention will be described below. A hot air heater according to one embodiment of the present invention will be described with reference to FIGS. The main body case 2 of the warm air heater 1 includes a front panel 2a serving as a front portion, a back case 2b having a side surface and a back surface, and a top panel 2c serving as a top portion having an operation section 15. In the main body case 2, a burner 3 and a fan 4 are provided slightly to the left of the center, and the burner 3 is disposed in a combustion chamber 5 having an open upper part. Also,
On the right side of the combustion chamber 5, as shown in FIG.
0 is provided to accommodate parts (not shown) such as a motor of the fan 4 and a gas supply pipe to the burner 3, a proportional valve, and a controller. As shown in FIG. 3, a partition plate 9 having an open lower portion is provided around the combustion chamber 5. On the back of the back case 2b, a first air supply port 2e for supplying air to the upper part of the partition plate 9, a second air supply port 2f for supplying air to the upper part of the combustion chamber 5, and a supply air to the burner 3. A third air supply port 2g for airing and a fourth air supply port 2 for air supply to the fan 4
h are formed, and a filter 2i covering these air supply ports is provided at the rear portion. In addition, a communication port 9 a is formed in the lower part of the partition plate 9 in front of the fan 4. As shown in FIGS. 1 and 4, an outlet 2d is formed in the lower part of the front panel 2a of the main body case 2 to the vicinity of both left and right ends of the front panel 2a. The front panel 2a constitutes a part of the outer peripheral surface of a cylinder substantially entirely having a vertical axis. That is, the front panel 2a has no flat portion on the front surface and is formed in a curved shape. , That is, the angle connecting the center of the substantially semi-cylindrical surface of the front panel 2a to each of the left end and the right end of the outlet 2d is 6
It is formed to be 6 degrees. A plurality of arc-shaped louvers 6 extending in a substantially horizontal direction along the semi-cylindrical surface of the front panel 2a are vertically arranged at the outlet 2d. As shown in FIG. 2, the louver 6 has a substantially right-angled triangular cross section when viewed from the side, and includes an upper inclined portion 6a inclined upward in the radial direction and a lower portion than the upper inclined portion 6a. It is composed of a lower horizontal portion 6b and a vertical portion 6c connecting them, and is formed by bending a single plate. The upper inclined portion 6a is a part of an inner peripheral surface of a cone whose apex is directed downward with a predetermined width cut out in a horizontal direction. For this reason, the inclination directions of the left and right ends of the upper inclined portion 6a are directed not to the front but to the left and right outside. As shown in FIG. 3, the air flow path of the warm air heater 1 has a first air supply port 2e as an inlet, passes between the partition plate 9 and the main body case 2, and has a fan through a communication port 9a. 4 and a second air supply passage 1 which is connected to the partition plate 9 through the upper part of the combustion chamber 5 with the second air supply port 2f as an inlet.
2, a third air supply path having the third air supply port 2 g as an inlet, passing through the combustion chamber 5, merging with the second air supply path 12, and passing between the combustion chamber 5 and the partition plate 9 toward the fan 4. 13 and an outlet passage 14 from the fan 4 to the outlet 2d. The outlet flow passage 14 is provided with two rectangular straightening plates 7L and 7R, which are opened in a C-shape when viewed from above and are provided vertically. These rectifying plates 7L and 7R are erected at equal intervals from the center position of the fan 4 provided slightly to the left. Therefore, the right rectifying plate 7R near the center of the hot air heater 1 has a wider width than the left rectifying plate 7L because there is more space. That is, the guide distance of the warm air is long. The air flow path 14 is formed by the flow straightening plates 7L and 7R, so that the left air flow path 14L,
The right outlet channel 14R is divided into a central outlet channel 14C and a right outlet channel 14R. The right outlet channel 14R is formed by effectively utilizing even the right end of the body, that is, the space provided in front of the storage unit 10. In the hot air heater 1 configured as described above, the air for the hot air is sucked from the third air supply port 2g by the rotation of the fan 4, and is partially used as combustion air in the combustion chamber 5. The remainder is heated by being mixed with the combustion gas from the burner 3, mixed with the air from the second air supply port 2 f flowing above the combustion chamber 5, and then air directly from the fourth air supply port 2 h to the fan 4. Is mixed with the air from the first air supply port 2e to form warm air, which is sent out between the louvers 6 of the outlet 2d while being distributed to the left, right, and center by the rectifying plates 7L and 7R. At this time, since the outlet 2d is formed so as to be large over the entire width of the front panel 2a, the rectifying plate 7 allows the hot air to largely spread right and left. Moreover, the width of the right rectifying plate 7R, which is arranged obliquely to the sending direction of the fan 4, is large.
That is, since the guide distance is long, a lot of warm air is generated by the right rectifying plate 7.
At the time of R, the air is sufficiently spread to the front of the storage unit 10, that is, to the right end of the right outlet passage 14R, and is sent out. Moreover, since the louver 6 formed in the lateral direction has the upper inclined portion 6a having a conical surface shape, the rectifying plates 7L,
The warm air guided to the left and right by the 7R spreads further to the left and right than the dashed arrow while rising along the upper inclined portion 6a as indicated by the solid arrow in FIG. Further, since the upper inclined portion 6a is inclined upward, the floor surface is not overheated by the warm air, and the warm air heater 1 can be used with confidence. As described above, in the warm air heater of the present embodiment, the blow-out passage 14 which is a semi-cylindrical space is formed in the lower part of the front of the body, and the rectifying plate 7 is provided in the blow-out passage 14. Therefore, the warm air sent from the fan 4 is guided radially to both right and left sides by the rectifying plate 7, and then is sent radially without hitting the inner wall of the warm air heater 1. Moreover, the louver 6 having the upper inclined portion 6a further spreads left and right. Therefore, the sending angle of the hot air becomes large, and the entire room including both the left and right sides in front of the hot air heater 1 can be heated, and the user can spend comfortably. Further, since the rectifying plates 7R and 7L are arranged at equal intervals from the center of the fan 4 instead of the center of the body, the air volume balance between right and left is good. Further, the air sucked from the second air supply port 2f flows in the upper part of the combustion chamber 5, and further the first air supply port 2e
The hot air heater 1 is heated by the high-temperature combustion gas from the burner 3 because the air drawn from the
Overheating of the front panel 2a and the top panel 2c can be prevented, and even if the user touches the upper part of the warm air heater 1, there is no burn, and the operating part 15 of the top panel 2c is not hot. Therefore, it can be used with confidence. Further, since the entire front of the appliance is rounded, the spread of warm air from the outlet 2d can be visually sensed. Louver 6
Of the front panel 2a is flush with the semi-cylindrical surface of the front panel 2a. Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention. is there. For example, FIG.
As shown in the figure, the rectifying plate 7 may not be provided.
With the louver 6 provided with a, the hot air can be blown out toward the left and right sides and blown out, and the manufacturing cost is reduced. Also, the central angle θ of the outlet 2d formed on the cylindrical surface
Is desirably 50 to 180 degrees, but may be smaller than this range when the device is made thin. If the center angle θ is small, the effect of spreading the warm air to the left and right sides is reduced, but can be compensated for by providing the rectifying plate 7. Further, the number of the current plates 7 may be increased.
In this case, the current plate 7 does not have to be arranged at equal intervals from the center of the fan 4. Further, the widths of the current plates 7 may all be the same. The heating source for heating the hot air is not limited to the gas burner, but may be an electric heater. The cross section of the louver does not need to be a right triangle, and the upper surface thereof may be inclined upward in the radial direction. As described in detail above, the first aspect of the present invention is as follows.
According to the warm air heater described above, the louver formed in a conical surface spreads the warm air radially, that is, in the left-right direction, so that the temperature distribution in the room becomes uniform and the user can comfortably spend.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a hot air heater as one embodiment as viewed from above. FIG. 2 is an explanatory diagram of a louver viewed from above. FIG. 3 is a cross-sectional view of a hot-air heater as one embodiment viewed from a side. FIG. 4 is an external view of a warm air heater as one embodiment. FIG. 5 is a cross-sectional view of a hot air heater as a modification as viewed from above. FIG. 6 is a cross-sectional view of a conventional hot air heater as viewed from above. [Description of Signs] 1 ... Hot air heater, 2 ... Body case, 2a ... Front panel,
2d: outlet, 2e, 2f, 2g, 2h: air supply port, 3 ...
Burner, 4 ... fan, 5 ... combustion chamber, 6,22 ... louver,
7 ... Rectifier plate, 14 ... Outflow channel

Claims (1)

Claims: 1. A hot air heater having a heating source in a main body case, and a blower for sending air to the heating source and supplying the hot air from an outlet to the outside of the body. The front panel of the main body case is formed in a semi-cylindrical shape, the outlet is formed to extend to near the left and right ends of the front panel, and the outlet is formed in a substantially horizontal direction along the semi-cylindrical surface of the front panel. A warm air heater characterized in that an arc-shaped louver extending in a direction is provided, and an upper surface of the louver is inclined upward in a radial direction to form a conical surface.