JPH0533508B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a far-infrared ray generator, which can heat up rapidly as soon as the power is turned on, and after rapid heating, controls the temperature rise and The present invention relates to a far-infrared ray generator that can be used for a long time by controlling the current value to a value sufficient to maintain a constant temperature.

(Prior art) When far infrared rays are irradiated to human body tissue, they can appropriately heat deep parts of the body without excessively heating the skin, so they are suitable for medical, cosmetic, and other uses, and have been used in numerous applications. It is used.

For these purposes, this type of far-infrared generator that has been provided in the past heats a heating wire when the power is turned on, and the far-infrared rays are generated and irradiated from a predetermined ceramic heated by the heating. It's getting old.

(Problem to be solved by the invention) However, conventional beam-type far infrared ray generators require time to rise to a predetermined temperature after turning on the power, and when rapid heating is required, had an initial heating mechanism for rapid heating using a separate circuit. That is, it incorporates two circuits: an initial circuit that can supply a large amount of current necessary for initial heating, and a sustaining circuit that can then supply a small amount of current to maintain a constant temperature.
After the initial heating by the initial circuit is completed, the circuit is switched to the continuous circuit, thereby creating a heating atmosphere at a constant temperature.

However, incorporating such an initial circuit and a sustaining circuit not only complicates the overall circuit configuration and makes it expensive, but also causes failure.

In addition, in the conventional heat sink configuration, although ceramic coating is applied to the surface of the iron plate, the surface is a flat surface, so when radiating heat, the irradiation is performed only in a straight line in the front, and heat radiation is not possible over a wide range. Because it is not available, its use has been limited to local use. Not only that, when the heat sink cools down naturally when the power is turned off and the use is stopped, the heat sink expands and contracts due to the rapid cooling, and as a result of this expansion and contraction, the heat sink may warp. This caused the product to become distorted, making it difficult to use it for a long period of time.

Therefore, the present invention was created in order to eliminate these drawbacks in view of the existing circumstances as described above. To provide a far infrared ray generator that can be switched to a sustained heating state after the temperature has been reached, thereby simplifying the circuit configuration, expanding the irradiation range, and enabling long-term use. purpose.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention provides an irradiation method in which a heat dissipation plate having a ceramic coating on the surface is heated and irradiated with far infrared rays. In the far-infrared ray generating device having a body, the irradiation body is formed by connecting a first heating wire and a second heating wire that heat the heat sink in series and disposing them on the back surface of the heat sink, and the first heating wire includes: A first thermostat that is turned off when it detects that a predetermined set temperature is reached after rapid heating is connected in parallel, and when the first thermostat is on, rapid heating is performed only by the second heating wire. and after the first thermostat is turned off, the first
Heating at a constant temperature is maintained by the heating wire and the second heating wire, and on the surface of the heat sink, a plurality of protruding radiating portions having a substantially semicircular cross section are arranged concentrically. It is characterized by

(Function) In the far infrared ray generator according to the present invention, when the power is turned on, the first thermostat in the on state applies no current to the first heating wire, so that the second heating wire generates a large amount of heat. only generates heat, thereby rapidly heating the heat dissipation plate of the irradiator. Due to this rapid heating, the high temperature state is quickly reached, and at the same time, the heat sink irradiates far infrared rays to quickly bring about the initial high temperature state.

When a predetermined high temperature state is reached, the first thermostat that detected the high temperature state is turned off, and as a result, current is applied to the first heating wire and the second heating wire, thereby reducing the overall current value. However, since the capacity is small, the amount of heat generated by both is small.
Therefore, a constant temperature state with a small amount of heat generation is maintained, and far infrared rays are irradiated from the heat sink with a required predetermined amount of heat generation.

Also, when the heat sink is heated, the radiation protrusion is
It radiates far-infrared rays to the surrounding area and expands the irradiation range.

The semicircular radiating protrusion prevents the heat sink itself from expanding or contracting, and the air stored on the back side of the radiating protrusion is heated at the same time as the heat sink is being heated, allowing the heat sink to cool itself naturally after irradiation. Warping of the heat sink itself,
Prevents overall distortion.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

The illustrated embodiment has a beam-shaped configuration that can be screwed into a light bulb socket (not shown). The cap 3, which is fixed with adhesive, is attached to the rear.
It is an outer cylinder that has large-diameter irradiation parts 4 at the front, and the diameter gradually increases in steps from the rear to the front. The outer cylinder 1 itself is made of thick aluminum, and the outer surface is treated with gold alumite to improve the reflection efficiency of far infrared rays.

The irradiation section 4 of the outer cylinder 1 is provided with an irradiator 10 which has been subjected to heat insulation treatment and is adapted to irradiate far infrared rays from an opening on the front surface of the outer cylinder 1. As shown in FIG. 1, the irradiator 10 is fixed by riveting directly to the thick wall of the irradiator 4 inside the irradiator 4. As shown in FIG.

The irradiator 10 itself includes a heat sink 11 whose surface is covered with a ceramic coating, a heat insulator 12 placed behind the heat sink 11, and a heat sink 12 placed on the back side of the heat sink 11 at the front position of the heat sink 12. 1 electric heating plate 13, 2nd
It has an electric heating plate 14. The first heating wire 13 and the second heating wire 14 are connected in series to the input/output terminals of the base 2, and when screwed into the light bulb socket, receive current supply and generate heat.
The heat dissipation plate 11 is heated and far infrared rays are irradiated through the ceramic coating. Further, as shown in FIG. 2, a first thermostat 15 is connected in parallel to the first electric heating plate 13, which is turned off when it detects that the set temperature has been reached at a predetermined high temperature after rapid heating. When the first thermostat 15 is on, initial rapid heating can be performed only by the second heating wire 14, which has a large capacity and generates a large amount of heat. Furthermore, after rapid heating reaches a predetermined high temperature state, and this is detected and the first thermostat 15 is turned off, the first heating wire 13 and the second heating wire 1 are turned off.
A current is applied to 4 and 4, and by decreasing the current value, constant temperature heating in a small capacity is maintained.

In addition, 16 in the figure is a second thermostat fixed at an appropriate position on the inner surface of the outer cylinder 1 in order to maintain a constant temperature state, and the first heating wire 13 and the second heating wire 1
4 in series to cut off the current applied to the entire circuit.

Here, the set temperature at which the first thermostat 15 is turned off in a high temperature state after rapid heating is
The rating is approximately 230℃, and the rating of the second heating wire 14 alone for rapid heating is approximately 500W, and the rating of both the first heating wire 13 and the second heating wire 14 for maintaining a constant temperature state is approximately 500W. The total rating is approximately 320W.

Therefore, an insulating material is interposed between the heat sink 11 and the heat insulating material 12 arranged behind it,
Further, as shown in FIGS. 3 and 4, on the surface thereof, a plurality of radial protrusions 17 having a substantially semicircular cross section are arranged concentrically. By forming and arranging the radiation protrusions 17, when far infrared rays are irradiated by the heat dissipation plate 11, the surface of the semicircular radiation protrusions 17 radiates far infrared rays to the surrounding area, and the irradiation range is Expand. Furthermore,
As a result of protruding in a semicircular shape, the entire surface becomes uneven, thereby preventing expansion and contraction of the heat dissipation plate 11 itself. Not only that, air is stored in the space formed on the back surface of the heat radiating protrusion 17, and the air stored here is heated at the same time as the heat radiating plate 11 is being heated. When the heat sink 11 itself is cooled after the irradiation with
This prevents warpage of the product itself and distortion of the entire product, and enables long-term use.

Further, as shown in the figure, the first heating wire 13 and the second heating wire 14 are housed in grooves formed concentrically or spirally on the front surface of the heat insulating material 12.
The heat generated by the heating wire 13 and the second heating wire 14 is not transmitted to the rear of the outer cylinder 1 and is removed from the heat sink 1.
1 is transmitted to the other side to improve heating efficiency and safety.

The first thermostat 15 is fixed to the rear surface of the heat insulator 12 in order to efficiently detect the arrival of a constant temperature after the initial rapid heating.

The second thermostat 16 is connected to a rivet, etc. inside the approximately central part of the outer cylinder 1 in order to detect a high temperature higher than a constant temperature value set to maintain a constant temperature state, and to shut off all circuits for safety. Fixed. In this case, by making the wall of the outer cylinder 1 thick, there is an advantage that it can be fixed directly to the wall of the outer cylinder 1 itself, and by making the outer cylinder 1 closely contact the inner surface of the outer cylinder 1, the temperature can be detected reliably. .

Note that by coating the caulking pins used for fixing the irradiator 10 and the second thermostat 16 to the outer cylinder 1 with alumite, it is difficult to conduct electricity, thereby improving safety.

Next, an example of its use will be explained.

The lamp is screwed into a light bulb socket (not shown) via the cap 3, and then the power is turned on. Then, since the first thermostat 15 in the on state does not apply current to the first heating wire 13, only the second heating wire 14, which generates a large amount of heat, generates heat, thereby reducing the initial rapid heating. I can do it. Due to this rapid heating, the high temperature state is rapidly reached, and at the same time, the heat sink 11 of the irradiator 10 irradiates far infrared rays to rapidly bring about the high temperature state.

When a predetermined high temperature condition is reached, the first thermostat 15 is turned off, so that the first heating wire 1
By applying current to the heating wire 3 and the second heating wire 14, the overall current value decreases, and the amount of heat generated by both of them decreases. Therefore, after the above-described rapid heating, the temperature is maintained at a constant temperature with a small amount of heat generated over a long period of time, and far infrared rays are irradiated from the heat sink 11 with a required predetermined amount of heat generated. At this time, even if the first thermostat 15 is turned on and a high-temperature heating state is achieved using only the second heating wire 14, the first thermostat 15 is then turned off, so the temperature becomes constant again, and the second thermostat 16 is turned off. Combined with the off-action, it is safe.

This constant temperature state is detected by the second thermostat 16, which is turned off when the temperature generated by this state exceeds a certain level, and is maintained.

[Effects of the Invention] The present invention is configured as described above, and therefore, a single circuit configuration automatically switches from an initial heating state in rapid heating to a sustained heating state after reaching a certain temperature. This simplifies the circuit configuration and allows safe use.

That is, in the far infrared ray generator according to the present invention, the irradiator 10 has an irradiator 10 that heats a heat sink 11 having a ceramic coating on the surface and irradiates far infrared rays. 1
A first heating wire 13 and a second heating wire 14 that heat the heating wire 1 are connected in series and arranged on the back surface of the heat sink 11,
A first thermostat 15 is connected in parallel to the first electric heating plate 13, which is turned off when it detects that a predetermined set temperature has been reached after rapid heating. Rapid heating is performed only by the heating wire 14, and after the first thermostat 15 is turned off, the first heating wire 13 and the second
This is because constant temperature heating is maintained by the heating wire 14.

By the first heating wire 13 and the second heating wire 14 connected in series, the first
By connecting the heating wire 13 and the first thermostat 15 in parallel, the overall circuit configuration can be simplified, and because of this simplification, there are fewer failures and it can be used safely.

Further, on the surface of the heat dissipation plate 11 of the irradiator 10, a plurality of radiating protrusions 1 protruding approximately semicircular in cross section are provided.
7 are arranged concentrically, so the radiation plate 1
1 is heated, the radiation protrusion 17 radiates far infrared rays to the surrounding area, expands the irradiation range, and creates and sustains a wide range of heating atmosphere without being limited to local use. It is something.

Moreover, the semicircular radiation protrusion 17
7 itself to prevent it from expanding and contracting due to repeated heating and cooling, and because an air pocket is formed on the back surface of the heat sink 17, the air stored in this air pocket is transferred to the irradiator 10. Since the heat dissipation plate 11 itself will be heated at the same time as the heat dissipation plate 1 itself is being heated, after the irradiation is finished, rapid cooling of the heat dissipation plate 11 itself is prevented, and the heat dissipation plate 11 itself is naturally cooled along with the natural cooling of the stored air. It is possible to prevent warpage and overall deformation that may occur. Therefore, the irradiator 10 itself can be used for a long period of time without being worn out or destroyed even by repeated heating and cooling, and maintenance and inspection are also easy.

As explained above, according to the far infrared ray generator according to the present invention, immediately after the start of use, it can be heated rapidly as soon as the power is turned on, and after rapid heating, the temperature rise is controlled and the required constant temperature is maintained. The current value is controlled to a sufficient value to enable long-term use, and these switches are realized with a single circuit configuration, simplifying the overall circuit configuration and producing excellent effects such as fewer failures. .

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a sectional view, FIG. 2 is a circuit diagram, FIG. 3 is a sectional view of the main part, and FIG. 4 is a front view of the irradiator. 1... Outer tube, 2... Cap base, 3... Cap, 4
...irradiation part, 10 ... irradiation body, 11 ... heat sink,
12...Insulating material, 13...First heating wire, 14...
Second heating wire, 15...First thermostat, 16
...Second thermostat, 17... Radiation protrusion.

Claims (1)

[Claims] 1. In a far-infrared generator having an irradiator that heats a heat sink whose surface is covered with a ceramic coating and irradiates it with far-infrared rays, the irradiator includes a first heating wire and a second electric wire that heat the heat sink. The first thermostat is connected in series with a heating wire and placed on the back of the heat sink, and the first thermostat is connected in parallel to the first heating wire, which is turned off when it detects that a predetermined set temperature has been reached after rapid heating. However, when the first thermostat is on, the heating wire is rapidly heated only by the second heating wire, and after the first thermostat is off, the first thermostat is turned off.
Heating at a constant temperature is maintained by the heating wire and the second heating wire, and on the surface of the heat sink, a plurality of protruding radiating portions having a substantially semicircular cross section are arranged concentrically. A far-infrared generator characterized by: