JPH0311610Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a radiation-type electric stove capable of heating operation according to the comfortable sensible temperature of head cold and feet warm.

(Prior Art) A radiation type electric stove with a vertically elongated shape is disclosed in Utility Model Application Publications No. 188001/1988 and No. 13904/1989, and has a known structure.
In these, a rod-shaped heater such as a sheathed heater is placed on a line connecting the focal points of the reflector and connected to a power source so as to radiate heat evenly as a whole.

(Problem that the invention aims to solve) The conventional electric stove mentioned above radiates heat evenly throughout the entire body, so it warms the person evenly from the feet to the head. There was a drawback that it was not suitable for heating.

In addition, many conventional long and narrow heaters have a structure that allows them to be used vertically or horizontally by rotating the central support point by 90 degrees, so it is not possible to set the heat output of the heater to a head-cold, foot-heat type from the beginning. It was virtually impossible.

In order to address these problems, the present invention has been made to provide an electric heater that can eliminate the drawbacks of the conventional heaters. The main purpose is to easily realize heating characteristics that meet the principle of cold head and warm feet by enabling heating operations to be performed individually between the heater and the rod-shaped heater located further away.

(Means for Solving the Problems) The present invention provides an irradiation type electric stove in which a plurality of rod-shaped heaters 5A having the same heat generation capacity,
5B are supported and fixed in a straight vertical line in a housing 4, and the housing 4 is provided on a stand 1 so as to be rotatable through 90 degrees to form an elongated heat generating part, and a heat generating part for dissipating radiation behind it. In addition to providing a reflector plate 6, operating devices such as switches are attached to the heat generating part support housing 4 or the stand 1, and the rod-shaped heater 5B closer to the stand 1 is heated at 100% capacity via the operation switch 11B. The rod-shaped heater 5A, which is connected to the power supply terminal so that it can be operated, but is far from the stand 1, is connected to the power supply terminal through the operation switch 11A and the controller 12A.
It is characterized in that it is connected to a power supply terminal to enable heating operation at a capacity that can be steplessly selected between capacity and 100% capacity.

(Function) The present invention uses the lower one of the rod-shaped heaters 5A and 5B arranged in tandem, that is, the one 5B at the level near the feet.
It is possible to perform heating operation so that the heating capacity is larger than that of the higher 5A, and it is possible to warm the feet more strongly than the top of the head, which can fulfill the principle of cold head and warm feet.

Of course, when switching the arrangement from vertical to horizontal, it goes without saying that operation can be performed with the average heating capacity.

(Example 1) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figures 1 and 2 show one embodiment of the present invention, in which a stand 1 serving as a base has two support rods 2, 2 erected. A heat generating part support housing (hereinafter referred to as housing) 4 is supported rotatably through 90 degrees via a support member 3 which is attached to the upper end as a bridge and which can be operated to change vertical and horizontal directions.

A plurality of, for example, two rod-shaped heaters 5A, 5B are insulatively supported and fixed by insulators 7, 7, 7 to the housing 4, whose rear central portion is supported by the support member 3. Heater 5A, 5B
are arranged in a straight vertical row to form an elongated heat generating section.

Further, the housing 4 is provided with a gutter-shaped reflection plate 6 having a parabolic cross section for connecting rod-shaped heaters 5A, 5B.
It is surrounded by the back and both sides of the
A guard 8 in the form of a vertical grid is attached to the front part.

The positional relationship between the reflector 6 and the rod-shaped heaters 5A, 5B is such that the rod-shaped heaters 5A, 5B are positioned parallel to or along a line connecting the focal points of the parabolic reflection surfaces of the reflector 6. .

A lid member 9 is provided at the top and bottom of the housing 4.
A controller 12 corresponding to each rod-shaped heater 5A, 5B is attached to the top lid member 9.
A, 12B and operation indicator lights 13A, 13B are arranged at locations where they can be easily operated from the front side.

On the other hand, the stand 1 houses a wiring board 14 having power terminals and the like and a fall safety switch 15, and also has a power cord 16 pulled out.

These electrical components are electrically connected to each other in the stand 1 and the housing 4 by wires inserted into the support rod 2.

The electrical circuit of the electric stove with the above configuration is shown in Figure 3. In the figure, the parts with the suffix A at the bottom right are the parts that are farthest from the stand 1, that is, the parts related to the upper rod-shaped heater 5A. It's hot,
Also, those with the suffix B are the lower rod-shaped heaters 5.
This is a member related to B.

The upper rod-shaped heater 5A is an operating switch 11A in a controller 12A integrally equipped with an operating switch 11A and an automatic opening/closing contact 1 of the controller.
8 are connected in series between the power supply terminals of the wiring board 14, and the lower rod-shaped heater 5B is similarly connected to the operation switch of the controller 12B integrally equipped with the operation switch 11B and the automatic opening/closing contact 18 of the controller. Wiring board 1 in series
It is connected between the power terminals of 4.

In the illustrated example, neon lamps are used as the operation indicator lights 13A and 13B, which are connected between the power supply terminals through the opening/closing contacts of the operation switch 11A or 11B, respectively, in series.

The controllers 12A, 12B control each heater 5A, 5 by phase control using a thyristor as an element.
An electronic structure that can steplessly increase or decrease the value of the voltage applied to B may be used, but the illustrated example has a structure that can steplessly change the energization rate between 0 and 100%. This is a contact mechanism consisting of a bimetal switch 18 having a dynamic normally closed contact and a variable resistor 19.

In this controller, when the resistance is increased by moving the resistance adjustment knob 20 of the variable resistor 19, the current flow to the bimetal switch 18 connected in series with the variable resistor 19 decreases, so the normally closed contact is opened. If the time required to close the current becomes longer and the percentage of the closing time to the energization time, that is, the energization rate increases, and if the resistance is decreased, the energization rate will naturally decrease, and this energization rate and Needless to say, there is a proportional relationship with the amount of heating.

Therefore, by operating the resistance adjustment knob 20, it is possible to adjust the energization time to the rod-shaped heaters 5A, 5B, thereby controlling the heating capacity.

It should be noted that by moving the knob 20 all the way to the side where the resistance decreases, the internally incorporated operation switch can be opened, and can be closed at other positions.

Next, to explain the mode of heating operation by the above-mentioned electric stove, the rod-shaped heater 5B near the lower stand 1 sets the variable resistor 19 of the controller 12B to the maximum resistance value and interlocks the operation switch 11B to the closing side. At the same time, the upper rod-shaped heater 5
At step A, the variable resistor 19 of the controller 12A is set to an intermediate resistance value, and the operation switch 11A is synchronously turned on to the closing side.

In this way, the rod-shaped heater 5B in the lower stage performs heating operation at 100% capacity, and the rod-shaped heater 5A in the upper stage performs heating operation at a lower capacity than the lower stage, and as a result of emitting heat rays toward the front, heating for cold head and feet is achieved. be done.

The above is an explanation when the electric stove of the present invention is used as a vertically elongated one. On the other hand, when this is used as a horizontally elongated one, the heating capacity of the lower rod-shaped heater 5B can also be adjusted. Therefore, the heating capacity of the lower rod-shaped heater 5B can be adjusted appropriately, and the heating capacity of the upper rod-shaped heater 5B can be adjusted appropriately.
While the controller 12A controls the heating capacity of A to be the same as that of the lower part, the average radiant heat radiation in the horizontally elongated state is transferred to the heat generating part through the support member 3 that can be operated to change the vertical and horizontal direction. It can be performed over the entire length of.

(Embodiment 2) FIG. 4 shows an electric circuit according to another embodiment of the present invention, and FIG.
1B and the operation indicator light 13B are rod-shaped heaters 5B, 5
The circuit for the upper rod-shaped heater 5A is the same as that shown in FIG. 3, but for the lower rod-shaped heater 5B,
The operation switch 11B and one contact 17B of the changeover switch 17 are connected in series to the power supply terminal, and the other contact 17A of the changeover switch 17 is connected in parallel to the upper rod-shaped heater 5A through the series.

In addition, both contacts 17A, 17 of the changeover switch 17
When one side of B is closed, the other side is in the opposite operating state of open, and can be reversed by switching with the operating section.

The mode of heating operation in the above example is as follows.

The changeover switch 17 is set to the contact switching state shown, while the controller 12A is connected to the variable resistor 19.
is set to an intermediate resistance value, and the operation switch 11B is interlocked to the closing side.

In this way, the lower rod-shaped heater 5B is heated at 100% capacity, and the upper rod-shaped heater 5A is heated at a lower capacity than the lower one, so that heating can be performed for cold heads and feet.

On the other hand, if both the upper and lower stages have the same capacity and you want to adjust the heating capacity, just switch the changeover switch 17 in the opposite direction, and the bar heaters 5A and 5B are connected in parallel and the energization rate is controlled by the controller 12A. Therefore, it is possible to adjust the heating capacity under the same conditions.

(Effect of the invention) As described above, in the present invention, the rod-shaped heaters 5A and 5B arranged in tandem are arranged such that the lower heater 5B on the side closer to the stand 1 is at 100% capacity, and the upper heater 5A on the far side is at 100% capacity. Since each heating operation is possible with the ability to steplessly select a lower value than that, comfortable heating can be achieved with a heat radiation amount suitable for the sensible temperature of the human body, keeping the head cold and the feet warm.

Furthermore, by limiting the amount of wasted heat to the head side, electricity consumption is reduced and economical operation is possible.

If you want to use a vertical heater horizontally, you can turn the housing 4 90 degrees and control it with the controller 12A to make the upper bar heater 5A at 100% capacity. Heaters 5A and 5B have the same capacity,
It is also possible to dissipate heat evenly over the entire length with the same full capacity, which has the advantage of being versatile.

[Brief explanation of the drawing]

1 to 3 are a front view, a right side view, and an exploded view of an electric circuit according to one embodiment of the present invention, and FIGS. 4 and 5 are an exploded view of an electric circuit and a housing according to another embodiment of the present invention. FIG. 1...stand, 5A, 5B...rod heater,
6...Reflector, 11A, 11B...Driving switch, 12A...Controller.

Claims (1)

[Scope of utility model registration request] A plurality of rod-shaped heaters 5A, 5 having the same heat generation capacity
B are supported and fixed in a straight vertical line in a housing 4, and the housing 4 is arranged on a stand 1 so as to be rotatable through 90 degrees to form an elongated heat generating part, and a reflecting plate 6 is provided behind it. At the same time, an operating device such as a switch is attached, and the rod-shaped heater 5B on the side closer to the stand 1 is connected to the
% capacity, while the rod heater 5A on the side far from the stand 1 can be steplessly selected between 0 capacity and 100% capacity via the operation switch 11A and controller 12A. A radiation-type electric stove characterized in that it is connected to a power terminal so that heating operation can be performed at a certain temperature.