JPS5947808B2 - panel heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a panel heater in which an intake port is provided at the bottom of the main body, an exhaust port is provided at the top, and a heating element is provided inside.

Generally, in this type of panel heater, a shielding plate is provided near the heating element because there is a risk that the temperature of the main body near the heating element becomes extremely high and may cause burns.

However, in the past, as shown in FIG. 4, flat shielding plates 23 and 24 were provided in front and behind the heating element 22 installed in the main body 21, respectively.

In this case, the high temperature air heated by the heating element 22 moves to the upper part of the main body 21 at a high speed due to the chimney effect of the flat shielding plates 23 and 24, and as a result, the main body 21
The temperature in the upper part of 1 becomes high.

Further, by providing the shielding plate 23.24, the temperature of the lower part of the main body 21 facing the shielding plate 23.24 is reduced due to the shielding effect of the shielding plate 23.24.
There is a temperature difference between the upper part and the lower part of the panel heater, and as a result, there is a drawback that the radiant heating efficiency as a panel heater is poor.

The present invention has been made to solve the above-mentioned conventional drawbacks, and will be explained below based on drawings showing embodiments thereof.

In FIGS. 1 to 3, 1 is a panel heater main body, and installation legs 2 are attached to the bottom of the panel heater main body.

3 is a plurality of intake ports provided at the bottom of the main body 1, 4 is an exhaust port provided at the front upper part, rear upper part, and top surface of the main body 1, and 5 is a plurality of intake ports provided in the main body 1 so as to be approximately parallel to the bottom part. 6 is a front shielding plate located in front of the heating element 5 and installed inside the main body 1; 7 is a rear shielding plate located behind the heating element 5 and installed inside the main body 1. So, this rear shielding plate 7
A protrusion 8 that protrudes toward the front shielding plate 6 is bent at the upper part of the front shielding plate 6 , and an outlet 9 is provided between the protrusion 8 and the upper end of the front shielding plate 6 .

Reference numeral 10 denotes a convex portion provided on a portion of the front shielding plate 6 facing the heat generating body 5, and this convex portion 10 projects in a direction away from the heat generating body 5.

Reference numeral 11 denotes a convex portion provided on a portion of the rear shielding plate 7 facing the heat generating body 5, and this convex portion 11 also projects in a direction away from the heat generating body 5, similarly to the convex portion 10 of the front shielding plate 6.

In the above configuration, a part of the air sucked in from the intake port 3 at the bottom of the main body 1 enters the passage 12 formed by the front shielding plate 6 and the rear shielding plate 7 as shown by the arrow, and enters the heating element 5.
is heated.

This heated air then rises above the passage 12,
Finally, it hits the protrusion 8 provided on the upper part of the rear shielding plate 7 and is pushed forward through the outlet 9.

At this time, since the flow of steam is disturbed, the rising speed of the hot air is slowed down, and as a result, the temperature of the front portion 1a of the main body 1 is uniformly increased.

Note that the temperature of the rear surface portion 1b of the main body 1 is lower than that of the front surface portion 1a because the amount of hot air passing through the rear surface portion 1b is smaller than that of the front surface portion 1a.

Therefore, the amount of radiation from the front side of the panel heater main body 1 increases, so that the radiation heating efficiency can be improved.

Furthermore, even if water is accidentally spilled from the top of the main body 1 during use, or foreign matter enters the body, a protrusion 8 is provided at the top of the rear shielding plate 7. It is possible to prevent direct contact with the heating element 5, which is at a high temperature, and as a result, there is no risk of insulation deterioration or ignition, so safety is increased.

Furthermore, a heating element 5 is provided on the front shielding plate 6 and the rear shielding plate 7.
Since the convex portions 1o and ii that protrude in the direction away from the heating element 5 are provided in the portions facing the heating element 5, the temperature of the portions of the front shielding plate 6 and the rear shielding plate 7 facing the heating element 5 can be lowered. As a result, discoloration of the shielding plates 6 and 7 and oxidation corrosion of the surfaces can be prevented.

Furthermore, since the convex portions 10° 11 also have the effect of reinforcing the shielding plates 6, 7, the thickness of the shielding plates 6, 1 can be reduced, and as a result, costs can be reduced.

As described above, according to the present invention, of the front shielding plate and the rear shielding plate installed in front and rear of the heating element, a protruding portion that protrudes toward the front shielding plate is formed on the upper part of the rear shielding plate,
By providing an outlet between this protrusion and the upper end of the front shielding plate, the hot air heated by the heating element hits the protrusion of the rear shielding plate and flows through the outlet in a turbulent state to the front of the main body. This allows the rising speed of hot air to be slowed down, and as a result, the temperature at the front of the main body is raised uniformly, thereby increasing the efficiency of radiant heating as a panel heater.

In addition, the protrusion provided at the top of the rear shield plate prevents water and foreign matter that entered from the top of the main unit from directly hitting the heating element, so there is no risk of insulation deterioration or ignition, and safety is maintained. It is something that can be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a panel heater showing an embodiment of the present invention, Fig. 2 is a partially sectional perspective view of the panel heater, Fig. 3 is a side sectional view of the panel heater, and Fig. 4 is a conventional panel heater. It is a side sectional view of a panel heater. 1...Body, 3...Intake port, 4...
...Exhaust port, 5...Heating element, 6...
Front shielding plate, 7... Rear shielding plate, 8...
・Protrusion, 9... Outlet, io, i'i...
...Protrusion.

Claims (1)

[Claims] 1. A main body provided with an intake port and an exhaust port, a heating element installed in the main body, and a front shielding plate and a rear shielding plate installed in front and rear of the heating element, respectively. . A panel heater, wherein a protrusion projecting toward the front shield plate is formed on the upper part of the rear shield plate, and an outlet is provided between the protrusion and the upper end of the front shield plate. 2. The panel heater according to claim 1, wherein a portion of the shielding plate facing the heating element is provided with a convex portion that projects in a direction away from the heating element.