JPS5911815B2 - heating heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heater used as a heat source for heating appliances such as kotatsu and foot warmers.

A conventional heater used for a hokotatsu has a heater box B at the bottom of the main body A installed under the floor, as shown in Figure 12.
An infrared lamp heater B' was installed there.

C is the tower, D is the tatami, and E is the ground.

However, this heater B' requires the heater box B because it is necessary to create a scaffolding space within the main body A, and furthermore, since it takes up a height, it complicates construction such as digging in the ground.
The temperature distribution in the upward direction due to heat radiation is the first
As shown in Figure 3, the high temperature distribution is in the P direction, and since the heat generating part becomes high temperature, there is a risk of fire due to dust and the like, and there is a risk of lamp damage due to water.

FIGS. 1 to 9 show a kotatsu equipped with a heating heater which is the basis of the present invention, which is short in height, has no directivity in temperature distribution in the direction of heat radiation, and is less susceptible to damage.

That is, in this kotatsu, a heater 2 is installed at the bottom of a main body 1, a grating 3 is placed on the heater 2, a stile 4 is hung on the upper opening of the main body 1, and a leg holder 4a is attached to one opposing inner surface on the stile 4. A tower 5 is set up, a futon 6 is placed on the tower 5, and a top plate 7 is placed on the tower 5.

Then, the main body 1 is placed in mortar on a block (or brick) 9 under the floor 8, and the upper end is attached to the floor plate 11 with an angle 10.
, and fold the top surface of stile 4 so that it is flush with 12.

In addition, the tower 5 has a pair of inner and outer surfaces at its lower end with cutouts (not shown) through which the leg brackets 4a pass, and the direction of the tower 5 can be changed (rotated by 90 degrees).
is stored in the main body 1 and stored under the floor when not in use.

14 is the ground, 15 is the joist, 16 is the drawer, 17 is the bundle, 18
is a stone's throw.

The heater 2 has a rectangular flat plate shape as a whole, and its outer shell consists of a metal bottom plate 19 and a mesh cover 20 covering the bottom plate 19, as shown in FIG.

Inside, a reflecting plate 22 is placed on the bottom plate 19 via a first pipe 21, a heat sink 24 is placed on the reflecting plate 22 via a second pipe 23, and a stopper is placed through the pipe 21.23. Screws 25 are screwed to the bottom plate 19, a cord heater 26 is wired to the lower surface of the heat sink 24, and a stopper 27 is spot welded to fix it.

The cord heater 26 is constructed by winding a nichrome wire 29 around a glass fiber body 28 as shown in FIG.
The heat dissipation plate 2 is wound with 4 layers of 30d, covered with a glass fiber braid 31, and further covered with a metal pipe 32.
4, the wires are arranged at equal intervals in an M-shape.

Lead wires 33 and 34 are connected to both ends of the cord heater 26.
The thermoswitch 35 and the fuse 37 of the fuse holder 36 are connected to the power cord 38, and the power cord 38 is connected to the power cord 38, which is led out to the outside through the bushing 39.

The heat sink 24 is made of aluminum, stainless steel, copper, etc., and non-ferrous metals are particularly preferred.

In addition, the surface is subjected to blackening treatment (aluminum is treated with alumite, other plating, etc.).

In this hokotatsu heater 2, when the power cord 38 is connected to the power source, the nichrome wire 29 of the heater 2 generates heat and the heat dissipation plate 2
4 is heated, and the heat is radiated into the main body 1 from the surface of the heat sink 24 as radiant heat and convection heat, and the radiant heat downward from the heat sink 24 is reflected by the reflection plate 22 to heat the heat sink 24, and the heat is radiated. The air between the plate 24 and the reflecting plate 22 is heated to cause convection as shown in FIG.

The temperature control is performed by a thermoswitch 35.

The temperature distribution above the heat dissipation plate 24 due to such a heat dissipation effect becomes uniform in all directions as shown in FIG.
).

With this configuration, this heating heater has the following effects.

In other words, (1) The entire heater is made into a thin flat plate shape and heat is radiated from the entire surface, so it can heat evenly in all directions, and since it does not take up as much height as an infrared lamp, it can be directly attached to the bottom of the kotatsu body. It is easy to install, there is no need to install a heater box, and construction is easy.

(2) Since the heater 2 heats through the heat sink 24, the temperature of the cord heater 26 can be averaged, and since the heat sink 24 covers the cord heater 26, which is a high-temperature heat generating part, there is less risk of fire caused by dust, etc. There is also less damage and damage caused by water.

(3) Easily attach the cord heater 26 to the heat sink 24
The cords can be wired in a letter-shaped manner at equal intervals, and the length of the cord is shortened by this wiring, so that the heat dissipation plate 24 can be heated efficiently and uniformly, and the causes of damage can be reduced.

(4) Since the heat dissipation surface of the heat dissipation plate 24 is blackened, radiant heat increases and the heating effect is high.

(5) The reflector plate 22 prevents heating of the bottom plate 19 unrelated to heating and can be effectively used as heating heat, resulting in less heat loss and improved efficiency, contributing to energy saving.

However, this heater for heating a kotatsu has a drawback that the heating effect due to convection heat is not sufficient, and the bottom plate 19, which is the outer shell, is heated unnecessarily.

Therefore, an object of the present invention is to provide a heater that can enhance the heating effect due to convection.

An embodiment of the invention is shown in FIGS. 10 and 11.

That is, in this heater, a large number of convection holes 40 are formed in the heat dissipation plate 24', and convection holes 41 are also formed in the reflection plate 22' at positions shifted from the convection holes 40. is the same as described above.

In this case, as shown in FIG. 11, the heating effect due to convection through the holes 40.degree. 41 becomes significant, and heating of the bottom plate 19 is suppressed.

Furthermore, due to the mutual positional deviation of the holes 40 and 41, a convection effect that efficiently transfers the heat generated by the cord heater 26 to the upper part of the outer shell is activated, so that the heating effect is further improved.

As described above, the heater of the present invention has a cord heater wired on the back side of the heat sink, a reflector plate placed below the cord heater, and a large number of convection holes that are mutually displaced from each other. The height is lower than that of the previous model, there is no directionality in temperature distribution, heating can be performed efficiently at a uniform temperature, and there are fewer causes of damage.In addition, the convection holes allow air to flow through the heat sink and reflector through convection. A flow is formed;
This has the effect of further promoting the heating effect due to convection heat.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a horigotatsu to which a heating heater, which is the basis of this invention, is applied, Figure 2 is a side view of the heater, and Koshirae 3
The figure is a cross-sectional view, Figure 4 is a plan view with the heater cover removed, Figure 5 is a cutaway perspective view of the cord heater, Figure 6 is a partial cross-sectional view of the heat sink, and Figure 7 shows the mounting part. 8 is an explanatory diagram showing the temperature distribution of the heater, FIG. 9 is a schematic sectional view of the heater showing the convection state, and FIG. 10 is a diagram showing the temperature distribution of the heater.
A plan view of the embodiment with the cover removed, Fig. 11 is a schematic cross-sectional view of the heater showing its convection state, Fig. 12 is a cross-sectional view of a conventional heater applied, and Fig. 13 shows the temperature of the heater. It is an explanatory diagram showing distribution. 19...Bottom plate (outer shell), 20...Mesh cover, 21.23...Pipe (insulating spacer)
, 22.22'...Reflector, 24'...
・Heat sink, 26... Cord heater (heater wire)
, 40.41... Convection hole.

Claims (1)

[Claims] 1. An outer shell provided with a net-like cover on the upper surface, a reflecting plate arranged and fixed in a floating state within this outer shell via a heat insulating spacer,
A heat dissipation plate arranged and fixed in a floating state parallel to the upper side of the reflector in the outer shell via a heat insulating spacer, and a heater wire wired to the lower surface of the heat dissipation plate in the outer shell. and a heating heater in which the heat sink and the reflector each have a large number of convection holes and are formed to be offset from each other.