JP2022068070A - Far infrared generation device - Google Patents

Abstract

To provide a generation device that is inexpensive, lightweight, and portable, does not have to use a quartz glass tube that does not transmit far infrared rays of 6 μm or more without maintaining a vacuum or filling with inert gas, is easy to be maintained and replaced, and can emit far-infrared rays corresponding to growing rays of animals and plants in order to grow animals and plants and to achieve low temperature drying.SOLUTION: In order to provide a device that directly generates far-infrared rays in the wavelength range of 6 μm to 14 μm, which are the growing rays of animals and plants, on the wavelength side shorter than 0°C, a string-shaped carbon fiber felt is cut out from a planar carbon fiber felt, the felt is inserted into a cylindrical tube and energized to raise the felt to the target temperature. At this time, a carbon fiber heater 4 capable of directly radiating animals and plants with the transmitted far-infrared rays by using a cylindrical tube made of a material that absorbs or transmits the far-infrared wavelengths peculiar to the substance.SELECTED DRAWING: Figure 4

Description

The present invention relates to a far-infrared generator that directly emits far-infrared rays, which are growing rays of animals and plants.

As infrared rays, near-infrared rays (about 0.7 to 2.5 μm) are generally used for infrared cameras, infrared communication, remote controls, etc., and mid-infrared rays (2.5 to 4 μm) are used in the astronomical field and high-temperature heat. (For example, see Patent Documents 1 and 2 and Carbon Heater: Non-Patent Documents 1 and 2). The use of far-infrared rays (4 to 1,000 μm) is used in medium / far-infrared heaters (for example, Patent Document 3), dryers, health appliances, and the like.

For high-temperature heaters, high-power carbon heaters (filament temperature 1,300 ° C) that use unique carbon filaments used for near-infrared rays (peak wavelength 2 μm) of Metro Denki Kogyo Co., Ltd., and felt-like carbon fiber filaments are used. You can see the next-generation carbon fiber heater (peak wavelength around 2.0 to 3.0 μm, filament temperature about 827 ° C) used by ESP Co., Ltd. (Non-Patent Documents 1 and 2). Both are products using carbon fiber. These products contain a sealed inert gas that emits infrared rays with a peak wavelength (around 2.0 to 3.0 μm) according to Wien's displacement law, which has a radiant intensity in the near to mid-infrared region. It is a heater in which carbon filament, which is a carbon fiber, is built in a quartz glass tube that has been radiated or vacuum-treated. Since this quartz glass does not transmit far infrared rays of 5 μm or more, it is not suitable for use of far infrared rays of 8 μm to 13 μm, which is called an atmospheric window. Further, in this carbon fiber heater or carbon heater, a carbon filament, which is a carbon fiber, is installed in a quartz glass tube in which an inert gas is sealed or the inside of the tube is vacuum, and the temperature is raised while preventing the oxidation of the carbon fiber filament. However, during operation, humans cannot easily touch or handle the quartz glass. When using far infrared rays, it is necessary to make a lightweight device that can be easily handled by humans.

Far-infrared rays have a wavelength band of 4 to 1,000 μm, and among them, wavelength bands of 3 to 5 μm or more and 8 to 13 μm, which are less absorbed by the atmosphere, are called “atmospheric windows”. Of these wavelengths, the infrared rays that reach the ground with the rays emitted by the sun are in the wavelength band called the window of the atmosphere, centered on 3.5 μm for mid-infrared rays and 10 μm for far-infrared rays. A schematic diagram is shown in FIG. 1 “Absorption of infrared rays by the atmosphere”. Among them, the absorption wavelength of water is 3 μm of mid-infrared rays and 6 to 12 μm of far-infrared rays that overlap with the absorption wavelength of living organisms (organic substances). In particular, the wavelength band of far infrared rays of 6 (8 according to the material) to 14 (15) μm is said to be the “growth ray” of animals and plants. However, the effective use of the far-infrared wavelength band of 6 (8) to 14 (15 according to the material) μm is the far-infrared plate heater for heat processing and drying of marine products and agricultural products (Max. 130 ℃ 7.18μ). ) Is used) and health equipment is used, and it is necessary to develop a new lightweight far-infrared ray generator that can widely and easily and effectively use far-infrared rays.

It is necessary to develop a technology for an easy-to-use, inexpensive and lightweight far-infrared ray generator that can radiate far-infrared rays in the wavelength range of 6 (or 8) to 14 μm, which is a growing ray of animals and plants. I can't find it. Greenhouses and greenhouses installed for growing plants take in visible, near, and middle infrared rays with wavelengths of 3 to 5 μm or less from the sun, but do not emit far infrared rays of 5 μm or more emitted from the greenhouse to the outside. Has. However, when the temperature of the outside air drops, the temperature inside the greenhouse or vinyl house gradually drops due to heat conduction, etc., so energy commensurate with the heat release is supplied by using a fossil fuel or electric heater. It is carried out. Therefore, near plants, it is not easily absorbed by the air, it can directly warm organic matter such as soil and plants, it can grow plants efficiently, and it can reduce the amount of fossil fuel used, so anyone can use it easily. It is desired to realize an inexpensive and lightweight far-infrared generator that is possible.

JP-A-2006-294337 Far-infrared heater Japanese Patent Laid-Open No. 11-086804 Far-infrared heater JP-A-2010-27224 (P2010-27224A) Method for manufacturing carbon fiber heater wire, carbon fiber heater wire and heater for melting snow

Metro Electric Industry Co., Ltd. Pure Tan Heater (single tube heater) (www.metro-co.com/product/heatertubes/prod04.html#ref_sp) Far-red black film heater (black film coating) (www.metro-co.com/ product / heatertubes /prod07.html) ESP CFH Co., Ltd.-Carbon Fiber Heater- (esp-kanagawa.co.jp/cfh.html) Next-generation carbon fiber heater p. 3/11, p10 / 11

In order to use far infrared rays to grow plants in the air, as shown in Fig. 1, it is said to be the "growth ray" of animals and plants, and out of 6 (8 according to the material) to 14 (15) μm according to the material. An atmospheric window (8 μm to 13 μm) can be effectively used in consideration of the wavelength range called the air window (Fig. 1) where far infrared rays are not easily absorbed by the air. Fig. 2 shows a schematic diagram, but the peak wavelength. It is necessary to use radiated light in a temperature range in which the corresponding temperature is 0 ° C. (corresponding wavelength is 10.6 μm) or higher. An object of the present invention is to realize and provide a far-infrared ray generator equipped with a carbon fiber heater capable of effectively irradiating far-infrared rays in a wavelength band of 6 (8 according to the material) μm to 10.6 μm at a peak wavelength directly to animals, plants and soil. To do.

A heater that energizes the carbon fiber provided in the quartz glass tube to generate a temperature of around 1,000 ° C is practically used, but when the carbon fiber is heated in the air, it is low, although it depends on the properties and quality of the carbon fiber. Since carbon fiber gradually oxidizes at 150 ° C or higher, when high temperature is required such as in a high temperature heater, the inside of the quartz glass tube is evacuated or an inert gas is sealed in the quartz glass tube to prevent the oxidation of carbon fiber. are doing. However, the quartz glass used cannot transmit far infrared rays of 5 μm or more. Therefore, in order to transmit far infrared rays and make effective use of them, it is not possible to use a quartz glass tube or a metal tube that does not transmit light. Therefore, an object of the present invention is to install a string-shaped carbon fiber felt in a tube to generate far-infrared rays having a wavelength band of far-infrared rays of 6 (or 8) to 14 μm, which is said to be a “growth ray” of animals and plants of 5 μm or more. In order to make it transmit, it is intended to realize and provide a tube using a material capable of transmitting far infrared rays.

An object of the present invention is to realize it as a device for growing animals and plants, for heat retention and for low temperature drying, and at the same time, in order to make it easy for anyone to use, it is inexpensive, lightweight and portable, 5 μm or more. We have realized an inexpensive far-infrared generator that is easy to maintain and easy to replace, without using a quartz glass tube that does not transmit far-infrared rays, and without maintaining a vacuum or filling with an inert gas. , To provide.

An object of the present invention is that the string-shaped carbon fiber felt 2 cut from the planar carbon fiber felt 1 shown in FIG. 3 having high electrical resistance is cut by a slight tensile stress and is stringed by a tensile stress in the vertical and horizontal directions. Since the filament of the carbon fiber is easily peeled off from the felt of the shaped carbon fiber, when making a string-shaped carbon fiber felt by cutting from the felt of the planar carbon fiber, the width should not be uneven and the string-shaped carbon fiber should be used. It is an object of the present invention to cut a carbon fiber felt and provide a cut string-shaped carbon fiber felt so that the carbon fiber felt can be used stably when the felt is energized.

The tube containing the string-shaped carbon fiber felt 2 may be a tube of various materials with respect to the substance used as the material of the tube, and each of the tube materials has a fingerprint area (1,300 (7.69 μm)). ) ~ 650 cm ^-1 (15.38 μm)) There is a substance-specific absorption spectrum in the frequency band. An object of the present invention is to use a material having a low absorption rate of far infrared rays, that is, a high transmittance, in a region required by animals and plants when radiating far infrared rays transmitted from a tube containing a string-shaped carbon fiber felt 2. To provide the tube.

Far-infrared rays having a peak wavelength based on the temperature of the string-shaped carbon fiber felt 2 are emitted from the string-shaped carbon fiber felt 2 built in the cylindrical tube, and the far-infrared rays that reach the target animals and plants among the far-infrared rays are According to the transmission according to the wavelength of far infrared rays peculiar to the substance of the cylindrical tube, the far infrared rays having the wavelength transmitted through the cylindrical tube are obtained. That is, an object of the present invention is to consider two parameters, that is, far-infrared rays having a peak wavelength depending on the temperature of the string-shaped carbon fiber felt 2 built in the cylindrical tube, and the transmittance of far-infrared rays peculiar to the cylindrical tube. It is an object of the present invention to provide a carbon fiber heater 4 capable of irradiating far infrared rays effective for growing animals and plants, keeping warmth, and drying at low temperature.

An object of the present invention is a carbon fiber heater in consideration of a temperature range in which carbon fibers are not oxidized when the string-shaped carbon fiber felt 2 is energized in the air and a heat resistant temperature of a cylindrical tube containing the string-shaped carbon fiber felt 2. 4 is to be designed and manufactured, and to provide the far-infrared generator shown in FIG. 4 together with the temperature controller 5 and the AC power regulator 6.

The far-infrared ray generator according to the present invention is said to be a "growth ray" of animals and plants, and effectively utilizes the atmospheric window (8 μm to 13 μm) out of 6 (8 according to the material) to 14 (15 according to the material) μm. A device that radiates far infrared rays on the wavelength side shorter than the wavelength of 10.6 μm corresponding to 0 ° C. at a temperature corresponding to the peak wavelength and can radiate directly to animals and plants is formed. Therefore, a string-shaped carbon fiber felt 2 having an optimum width is cut out from the planar carbon fiber felt 1 in which dense carbon fibers are laminated, and the string-shaped carbon fiber felt 2 installed in the cylindrical tube is energized and oxidized. It is raised to the desired temperature at a temperature below the temperature to generate far infrared fiber. At this time, considering the shape of the string-shaped carbon fiber felt 2 to be inserted into the cylindrical tube and the transmission rate due to the wavelength of infrared rays depending on the material of the cylindrical tube, far infrared rays necessary for growing animals and plants, heat retention, and low-temperature drying are emitted. A far-infrared ray generator having a carbon fiber heater 4 capable of forming a far-infrared ray generator.

High-temperature heaters using vacuum and inert gas-filled quartz tubes, which are currently in practical use, do not transmit far-infrared rays with wavelengths of 5 μm or more, whereas a high-temperature source is applied to a coating such as metal to generate far-infrared rays. The cost required for the indirect method of making the gas is high. In the present invention, far-infrared rays in a wavelength band (8 μm to 13 μm) called an atmospheric window, which has a high transmittance of far-infrared rays in the atmosphere, are effectively used, and at the same time, “growth rays” effective for soil and animals and plants for growing animals and plants. It radiates far infrared rays of 6 (8 according to the material) to 14 (15) μm according to the material, and can be used for growing animals and plants, keeping warm, and drying at low temperature. Therefore, the string-shaped carbon fiber felt 2 is built in a cylindrical tube filled with air for stable use, and both ends of the string-shaped carbon fiber felt 2 are energized to generate far infrared rays. However, since far-infrared rays are radiated inside the cylindrical tube, the amount of far-infrared rays that can pass through the cylindrical tube varies depending on the material of the cylindrical tube for each wavelength. Therefore, considering the wavelength of far infrared rays generated by controlling the temperature of the string-shaped carbon fiber and the wavelength range with high transmittance depending on the material of the cylindrical tube, and considering the heat resistant temperature of the member to be used, etc., it is lightweight. It is possible to realize a device that enables direct irradiation of growing light on soil, animals and plants, and further heat retention and low-temperature drying with an inexpensive device that is easy to handle.

Absorption of infrared rays by the atmosphere (schematic diagram, Thermal Engineering Division, Japan Society of Mechanical Engineers, July 29-30, 2009 "Thermal fluid measurement technology that supports thermal design" Basics of infrared radiation thermometers Collected curved parts from Mr. Moto Nakamura ) Relationship between object temperature and radiant energy (Wien's displacement law) (schematic diagram, partly taken from Infrared Engineering Ohmsha) Planar carbon fiber felt and string carbon fiber felt Far infrared device Longitudinal and cross-sectional views of the cylindrical carbon fiber felt and the cylindrical tube constituting the carbon fiber heater with the built-in string carbon fiber felt. Longitudinal view and cross-sectional view of a cylindrical tube constituting a carbon fiber felt rod and a carbon fiber felt rod with a built-in string-shaped carbon fiber felt rod. Example of far-infrared transmittance of resin (Source: Far-infrared heater emission HI-LEX catalog) Metal cylinder tube type carbon fiber heater

Commercially available carbon heaters use, for example, carbon fiber felt or filament, which is contained in a quartz glass tube maintained in a vacuum or filled with an inert gas at a power of several hundred watts to 1 kW or more. Then, according to the purpose of the product, near-infrared rays or mid-infrared rays having a peak wavelength of about 1,000 ° C. for carbon fiber felt or filament are emitted. However, quartz glass does not transmit infrared rays of 5 μm or more. When radiating far infrared rays, a far infrared ray generator that indirectly radiates far infrared rays by coating the surface of a metal tube heated to a high temperature is used. On the other hand, the present invention is a carbon fiber heater 4 capable of irradiating far infrared rays with a peak wavelength of about 6 μm to 10.6 μm, which can directly irradiate animals and plants with low power consumption and can be used for heat retention and low temperature drying. Far-infrared generator equipped with.

In the commercialized high-power carbon heater, a carbon filament or a carbon fiber (felt) filament is installed in a quartz glass tube and energized to generate a high temperature of about 1,000 ° C. At this time, the quartz tube containing the carbon filament and the carbon fiber (felt) filament prevents the carbon fiber from being oxidized by enclosing the inert gas and maintaining the vacuum. However, quartz glass does not transmit far infrared rays of 5μ or more. Therefore, the new far-infrared ray generator emits far-infrared rays of 5μ or more that cannot be covered by the high-power carbon heater. It is a carbon fiber heater 4 using a resin or rubber-based cylindrical tube having a different transmission rate for each wavelength, which directly generates far infrared rays without using an indirect substance such as a coating. That is, plants and animals and plants are grown without using quartz glass that does not emit far infrared rays of 5 μm or more, without using a method of keeping the inside of the quartz glass tube in a vacuum or filling with an inert gas, and without using a coating. A far-infrared generator equipped with a carbon fiber heater 4 that can directly irradiate the soil with far-infrared rays and can be applied to heat retention and low-temperature drying.

Infrared rays are classified in various ways according to their wavelengths. For example, there are other classifications such as near infrared rays (0.7 to 2.5 μm), middle infrared rays (2.5 to 4 μm), and far infrared rays (4 to 1,000 μm). Among them, the wavelength band (3 to 5 μm, 8 to 13 μm) in which the infrared transmittance of the atmosphere is high (the absorption of infrared rays by the atmosphere is low) is called the “atmospheric window” (FIG. 1). Humans also emit far infrared rays of 6 μm to 14 μm, and mitochondria in human cells emit far infrared rays of 8 to 14 μm. And 6 (8 depending on the material) to 14 (15) μm depending on the material is called a growing ray of animals and plants. It is also used for identification of chemical substances, and the wave number of 1,300 (7.69) to 650 cm ^-1 (15.38 μm) at which the absorption spectrum peculiar to the substance appears is called the fingerprint region. The carbon fiber heater 4 constituting the far-infrared ray generator of the present invention is a heater that generates a growing ray effective for growing animals and plants and radiates directly to the animals and plants.

The carbon fiber heater 4 of the present invention includes a cylindrical tube containing a string-shaped carbon fiber felt, a string-shaped carbon fiber felt 8 built in the cylindrical tube that generates far infrared rays when energized, or a carbon fiber felt rod 12, and a carbon fiber felt rod 12. It consists of the necessary accessories.

The string-shaped carbon fiber felt 2 used in the present invention is manufactured by cutting the string-shaped carbon fiber felt 2 having the required specifications, dimensions and shape from the planar carbon fiber felt 1. Using the string-shaped carbon fiber felt 2, the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 satisfying the specifications of the carbon fiber heater 4 is manufactured. Since the string-shaped carbon fiber felt 2 is vulnerable to tensile stress, easily torn off, and easily peeled off, it is used by inserting it into a pipe in order to make it less susceptible to external influences.

The tube containing the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12 has a substance-specific absorption spectrum for far infrared rays with respect to any substance used. When the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12 is energized and emits far infrared rays having a wavelength in a region called an air window, the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber rod is emitted. 8 can be used stably so as not to be affected by pulling or the like applied from the outside, and a cylindrical tube is used to radiate far infrared rays evenly in all directions.

The peak wavelength (highest energy) of the electromagnetic wave emitted from the substance, that is, the wavelength at which the monochromatic radiation of the blackbody is maximum, is λ = 2,897 / T (μm) (Wean's displacement law, T). Absolute temperature = Celsius degree of the object +273). For example, a person with a body temperature of 36 ° C. emits far infrared rays having a peak wavelength of about 9.4 μm. Therefore, both ends of the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 in the cylindrical tube are energized, and the temperature of the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is 0 ° C. or higher (0). It is a carbon fiber heater 4 that utilizes far infrared rays emitted at a peak wavelength (10.6 μm) corresponding to ° C. In the present application, for the sake of simplicity, the temperature at which the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is placed and the peak wavelength corresponding to the temperature are described.

The carbon fiber heater 4 shown in FIGS. 5 and 6 according to the embodiment includes a string-shaped carbon fiber felt 8 or also a string-shaped carbon fiber felt rod 12 capable of generating far infrared rays by energizing both ends, but in this paragraph, the string-shaped carbon The description will be based on the string-shaped carbon fiber felt 2 manufactured as a raw material for the fiber felt 8 or the string-shaped carbon fiber felt rod 12. Each of the planar carbon fiber felts 1 is manufactured in a planar shape by densely densely packing short carbon fibers. The planar carbon fiber felt 1 is cut as a string-shaped carbon fiber felt 8 or also with appropriate specifications suitable for the string-shaped carbon fiber felt rod 12 to produce the string-shaped carbon fiber felt 2. The string-shaped carbon fiber felt 2 is inserted into a tube, and the string-shaped carbon fiber felt 8 or the reinforced one is used as the string-shaped carbon fiber felt rod 12. In this paragraph, the dimensions and area described as the string-shaped carbon fiber felt 2, and the calories W, voltage V, current I, resistance R, and coefficient k when a voltage is applied to both ends of the string-shaped carbon fiber felt 2 are strings. Even when the shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is used, it can be applied as it is. When a voltage is applied to both ends of the string-shaped carbon fiber felt 2 and energized, the electric resistance is determined by the area of the carbon fiber in the cross section of the carbon fiber felt 2 and the length of the carbon fiber felt 2. Since each carbon fiber is short and has resistance to energization between the short fibers, a large resistance is generated at both ends of the string-shaped carbon fiber felt 2. The high resistance between both ends of the string-shaped carbon fiber felt 2 is used to suppress the current value when a voltage is applied. R (resistance at both ends of the string-shaped carbon fiber felt 2), k (constant), L (length of the string-shaped carbon fiber felt 2), S (cross-sectional area of the carbon fiber portion of the string-shaped carbon fiber felt 2), a When (thickness of string-shaped carbon fiber felt 2) and b (width of string-shaped carbon fiber felt 2), R = k (L / S) = k (L / a · b). The current value I is represented by I = V / R = V · S / k · L = V · a · b / k · L. At this time, the amount of heat W generated in the string-shaped carbon fiber felt 2 is V = IR = I · k · L / a · b when the voltage V and the current I, and W = I ² R = V ² / R. = V ² · S / k · L = V ² · a · b / k · L. Here, when the applied voltage V is determined, the thickness a of the string-shaped carbon fiber felt 2 is determined in advance, and the length L of the string-shaped carbon fiber felt 2 is determined by the design of the carbon fiber heater 4, k is also determined. When it is a constant of the string-shaped carbon fiber felt 2, the heat capacity W is proportional to the cross-sectional area S of the string-shaped carbon fiber felt 2. Therefore, in order to increase the heat capacity W of the carbon fiber heater 4, it is necessary to maximize the cross-sectional area S of the string-shaped carbon fiber felt 2 as a dimension that can be inserted into the pipe. Therefore, the thickness a and the width b of the string-shaped carbon fiber felt 2 are set to the same square, and the diagonal line 3 of the cross-sectional area is set to the inner diameter of the cylindrical tube. The tube containing the string-shaped carbon fiber felt 2 is required to be a cylinder in order to radiate far infrared rays evenly in all directions from the tube. Then, in order to increase the calorific value W, it is necessary to increase the diameter of the cylindrical tube and increase the cross-sectional area S of the string-shaped carbon fiber felt 2. For that purpose, the cylindrical tube needs to be filled with the built-in string-shaped carbon fiber felt 2. Therefore, it is possible to fill the gap with a finer string-shaped carbon fiber felt, for example, 9. Then, in order to raise the temperature of the string-shaped carbon fiber felt 2 and shift the peak wavelength to the short wavelength side, it is necessary to raise the voltage V applied to both ends of the string-shaped carbon fiber. At the same time, since there is some absorption of far infrared rays even in the wavelength range of the air window, it is effective to fill the inside of the tube with string-shaped carbon fiber felt to reduce the amount of air in the tube.

A carbon fiber heater 4 used in the temperature range until the carbon fiber oxidation of the carbon fiber felt 8 occurs at 0 ° C. (10.6 μm) or higher, and emits far infrared rays at the peak wavelength (where the energy is highest). The amount of radiation energy of the string-shaped carbon fiber felt 8 which is a radiating radiator depends on the amount of heat possessed by the string-shaped carbon fiber felt 8. Therefore, in order to increase the amount of far infrared rays generated by the carbon fiber heater 4, when the specifications such as the diameter and length of the cylindrical tube containing the string-shaped carbon fiber felt 8 are set, the cross section of the string-shaped carbon fiber felt 8 is square. In the case of, in order to increase the area of the carbon fiber portion in the cross section, the thickness of the string-shaped carbon fiber felt 8 is set to the same dimension as the width of the cross section of the string-shaped carbon fiber felt 8, that is, the cross section of the string-shaped carbon fiber felt 8 is set. As a square, the length of the diagonal line is the same as or as close as possible to the inner diameter of the cylindrical tube, and the cross-sectional area of the string-shaped carbon fiber felt 8 is similar to the cross-sectional area of the cylindrical tube. It is necessary to set the shape of the cross section of. Then, in order to shift the wavelength corresponding to the peak wavelength of the string-shaped carbon fiber felt 8 to the short wavelength side, the amount of heat generated by the string-shaped carbon fiber felt 8 is proportional to the square of the applied voltage, so that the applied voltage is increased and the peak wavelength is radiated. Need to raise. That is, the length of the diagonal line of the square in the cross section of the string-shaped carbon fiber felt 8 is limited to the inner diameter of the cylindrical tube containing the string-shaped carbon fiber felt 8. Further, in order to fill the inner diameter side of the built-in cylindrical tube with one string-shaped carbon fiber felt 8 as much as possible, the inner diameter of the cylindrical tube containing the string-shaped carbon fiber felt 8 and the built-in string-shaped carbon In the relationship between the fiber width and the thickness, the thickness and width of the built-in string-shaped carbon fiber felt 8 are the same, that is, the cross section of the string-shaped carbon fiber felt 8 is square and the diagonal length thereof is the inner diameter of the cylindrical tube. Cut out from the planar felt 1 so as to be the same, and add finer string-shaped carbon fiber felt 9 as needed to fill the gap as shown in FIG. 5, and fill the inside of the pipe with carbon fiber as much as possible to reduce the air portion. Then, it is used below the oxidation temperature of the string-shaped carbon fiber felt 8, and the voltage for energizing the string-shaped carbon fiber felt 8 is controlled below the heat-resistant temperature of the material of the cylindrical tube 7 containing the string-shaped carbon fiber felt 8. The carbon fiber heater 4 is characterized in that the temperature of the string-shaped carbon fiber felt 8 corresponding to the peak wavelength can be set. When the string-shaped carbon fiber felt 8 is inserted into the cylindrical tube, the diagonal dimension of the cross section of the string-shaped carbon fiber felt 8 may be reduced as necessary in order to facilitate the insertion. When the cross section of the string-shaped carbon fiber felt 8 is circular, the diameter thereof is taken as the inner diameter of the cylindrical tube. When the string-shaped carbon fiber felt 8 is inserted into the cylindrical tube, the diameter of the circle in the cross section of the string-shaped carbon fiber felt 8 may be reduced as necessary to facilitate the insertion.

The string-shaped carbon fiber felt 2 cut from the planar carbon fiber 1 is cut with a slight tensile stress, and the carbon fiber fibers have a property of being easily peeled off with a slight tensile stress in the vertical and horizontal directions. In order to enable more stable use when the fiber felt 2 is energized and used, a new string-shaped carbon fiber felt that is not easily affected by their tensile stress is required. In order to cover the properties of the string-shaped carbon fiber felt 2, the string-shaped carbon fiber felt 2 is easily elastically deformed, for example, an insulated metal wire 11 such as a polyamide imide fiber or an alumite-treated aluminum. Then, a string-shaped carbon fiber felt rod 12 reinforced with a thin wire such as Tegs (fishing thread) is manufactured. The handling of the string-shaped carbon fiber felt rod 12 is the same as that of the carbon fiber felt 8. That is, in the carbon fiber heater 4 used in the temperature range until the carbon fiber of the carbon fiber felt rod 12 is oxidized at 0 ° C. (10.6 μm) or higher, at the peak wavelength (the place where the energy is highest). The amount of radiation energy of the string-shaped carbon fiber felt rod 12, which is a radiator that emits far infrared rays, depends on the amount of heat possessed by the string-shaped carbon fiber felt rod 12. Therefore, in order to increase the amount of far infrared rays generated by the carbon fiber heater 4, when setting specifications such as the diameter and length of the cylindrical tube containing the string-shaped carbon fiber felt rod 12, the string-shaped carbon fiber felt rod 12 is used. When the cross section is square, in order to increase the area of the carbon fiber portion in the cross section, the thickness of the string-shaped carbon fiber felt rod 12 is set to the same dimension as the width of the cross section of the string-shaped carbon fiber felt rod 12, that is, the string-shaped carbon fiber. With the cross section of the felt rod 12 as a square and the length of the diagonal line as the inner diameter of the cylindrical tube or as close as possible to the inner diameter of the cylindrical tube, the cross-sectional area of the string-shaped carbon fiber felt rod 12 is set to be similar to the cross-sectional area of the cylindrical tube. It is necessary to set the shape of the cross section of the string-shaped carbon fiber felt rod 12. Then, in order to shift the wavelength corresponding to the peak wavelength of the string-shaped carbon fiber felt rod 12 to the short wavelength side, the amount of heat generated by the string-shaped carbon fiber felt rod 12 is proportional to the square of the applied voltage, so the applied voltage is increased and the peak wavelength is radiated. It is necessary to raise the temperature. That is, the length of the diagonal line of the square in the cross section of the string-shaped carbon fiber felt rod 12 is set to the upper limit of the inner diameter of the cylindrical tube containing the string-shaped carbon fiber felt rod 12. Further, in order to fill the inner diameter side of the built-in cylindrical tube as much as possible with one string-shaped carbon fiber felt rod 12, the inner diameter of the cylindrical tube containing the string-shaped carbon fiber felt rod 12 and the built-in string Regarding the relationship between the width and thickness of the string-shaped carbon fibers, the thickness and width of the built-in string-shaped carbon fiber felt rod 12 are the same dimensions, that is, the cross section of the string-shaped carbon fiber felt rod 12 is square and the diagonal length thereof is a cylindrical tube. Cut out from the planar felt 1 so as to be the same as the inner diameter of, and add a finer string-shaped carbon fiber felt 9 as needed to fill the gap as shown in FIG. 6, and fill the inside of the pipe with carbon fiber as much as possible to fill the air portion. And used below the oxidation temperature of the string carbon fiber felt rod 12 and energize the string carbon fiber felt rod 12 below the heat resistant temperature of the material of the cylindrical tube containing the string carbon fiber felt rod 12. The carbon fiber heater 4 is characterized in that the temperature of the string-shaped carbon fiber felt rod 12 corresponding to the peak wavelength can be set by controlling the voltage. When the string-shaped carbon fiber felt rod 12 is inserted into the cylindrical tube, the diagonal dimension of the cross section of the string-shaped carbon fiber felt rod 12 may be reduced as necessary in order to facilitate the insertion. When the cross section of the string-shaped carbon fiber felt rod 12 is circular, the diameter thereof is taken as the inner diameter of the cylindrical tube. When the string-shaped carbon fiber felt rod 12 is inserted into the cylindrical tube, the diameter of the circle in the cross section of the string-shaped carbon fiber felt rod 12 may be reduced as necessary to facilitate the insertion. When the string-shaped carbon fiber felt rod 12 is produced, a metal wire 11 having insulation such as polyamide imide fiber, aluminum treated with alumite, and thin wires such as Tegs (fishing thread) are embedded at predetermined intervals. It is desirable to produce the planar carbon fiber felt 2 and cut out the string-shaped carbon fiber felt rod 12 from the planar carbon fiber felt 1. Although the emission of far infrared rays will be reduced, the metal wire 11 is fixed to the side surface of the square of the string-shaped carbon fiber felt 2, and the portion corresponding to the gap between the cylindrical tube and the string-shaped carbon fiber felt 2. That is, it is installed at any one place or a plurality of places of the thin string-shaped carbon fiber 9 in FIG. 6 so as not to impair the square shape of the string-shaped carbon fiber felt 2, and the string-shaped carbon fiber felt rod 12 is created. You may. When the cross section of the string-shaped carbon fiber felt rod 12 is circular, the diameter of the string-shaped carbon fiber felt rod 12 may be smaller than the inner diameter of the cylindrical tube, if necessary, with the inner diameter of the cylindrical tube to be inserted as the limit.

The string-shaped carbon fiber felt 8 described in [0026] or the string-shaped carbon fiber felt rod 12 described in [0027] is filled with normal atmospheric pressure air, for example, made of resin, rubber, or the like. The string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is fixed to the connection terminal 15 with a binding band 14 at both ends of the waterproof cylindrical tube 7 inserted into the cylindrical tube 7 for energization. A carbon fiber heater 4 characterized by being connected to a lead wire 13 of an external circuit. At this time, the metal wire 11 having insulation such as polyamide-imide fiber, the aluminum treated with alumite, and the thin wire such as Tegs (fishing line) are not energized.

If necessary, the cylindrical tubes 7 containing the string-shaped carbon fiber felt 8 or the newly created string-shaped carbon fiber felt rod 12 by reinforcing and fixing the string-shaped carbon fiber felt 2 are positioned at equal intervals. The carbon fiber heater 4 is characterized in that the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is indirectly fixed from the outside of the cylindrical tube 7 with a binding band or also a metal caulking 10.

When inserting the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12 into the cylindrical tube and using it in a place where waterproofing is not required, cut one of the surfaces of the cylindrical tube and spread the cut out to make a string. The shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is inserted into the cylindrical tube 7, and indirectly from the outside of the cylindrical tube 7 with a binding band or a metal caulking 10 located at equal intervals from the outside of the cylindrical tube 7. A carbon fiber heater 4 characterized by fixing a string-shaped carbon fiber felt 8 or also a string-shaped carbon fiber felt rod 12.

When using the string-shaped carbon fiber felt 8 shown in FIG. 5 or, if necessary, the string-shaped carbon fiber felt rod 12 shown in FIG. 6, the connection terminal is connected to the entrance / exit of the cylindrical tube 7. 15 is provided, and the connection terminal 15 and the string carbon fiber felt 8 or also the string carbon fiber felt rod 12 are connected and fixed by the binding band 14, and at the same time, waterproof treatment is performed so that water does not enter the inside of the pipe. AC power adjustment via the temperature controller 5 for monitoring the set temperature of the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12 provided with the temperature controller 5 for controlling the temperature shown in 4. Low power, direct far infrared rays from the carbon fiber heater 4 that energize the carbon fibers constituting the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12 via a circuit for adjusting the voltage with the vessel 6. The far-infrared device according to FIG. 4, which emits light to an object.

Regarding the cylindrical tube 7 into which the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is inserted, a material such as resin or rubber manufactured from a material having a heat resistant temperature close to the temperature at which the carbon fiber starts to oxidize to the extent possible. It is desirable to use the cylindrical tube 7 made in 1. At the same time, the tube thickness should be made as thin as possible in order to reduce the absorption of far infrared rays by the cylindrical tube 7, and at the same time, the shape of the tube should be U-shaped or circular. Or, a carbon fiber heater 4 that can be transformed into a shape according to the user's wishes.

Regarding the cylindrical tube 7 into which the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is inserted, the material selected as the cylindrical tube 7 is the following far-infrared wavelength (the temperature of the object corresponding to the peak length in parentheses). Is selected in consideration of.
Atmospheric window on the long wavelength side: Wavelength band from 8 μm (89.1 ° C) to 13 μm (-50.2 ° C) “Growing rays” of animals and plants: 6 μm (209.8 ° C) (8 μm (89.1 ° C according to data) )) -14 μm (-66.1 ° C) (15 μm (-79.9 ° C) depending on the material)
Peak wavelength at 0 ° C: 10.6 μm
The peak wavelength of radiant energy at room temperature of an object is 10 μm: 16.7 ° C.
Human body temperature 36.5 ° C: 9.36 μm
Peak wavelength at peak wavelength conversion of 100 ° C: 7.77 μm
Peak wavelength at peak wavelength conversion of 200 ° C: 6.12 μm
Therefore, it is desirable to use a far-infrared generator that can cover up to the peak wavelength of 0 ° C. by making the best use of the wavelength band of the window of the atmosphere. When the object is close to the object to be radiated and the influence of the atmosphere is small, it is desirable to achieve the temperature of the object that emits radiant energy on the shorter wavelength side than 8 μm outside the window of the atmosphere. At that time, when setting the heat resistant temperature and aging deterioration, that is, the life of the carbon fibers constituting the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 that emits radiation energy on the wavelength side shorter than 8 μm, the string-shaped carbon fibers The heat-resistant temperature and aging deterioration, that is, the life of the metal wire 11 and the thin wire such as Tegs (fishing thread) that have been insulated for reinforcement that make up the felt rod 12, and the string-shaped carbon fiber felt 8 and the string-shaped carbon fiber felt rod 12 are built-in. Considering the heat-resistant temperature and aging deterioration of materials such as resin and rubber that make up the cylindrical tube 7, that is, the time of life, the heat-resistant temperature of members such as the binding band 14 and metal caulking 10 attached to the cylindrical tube 7 It is required to design and manufacture the string-shaped carbon fiber felt 8 and the string-shaped carbon fiber felt rod 12 of the carbon fiber heater 4 in consideration of the service life.

The carbon fibers constituting the string-shaped carbon fiber felt 8 and the string-shaped carbon fiber felt rod 12 and having a low heat treatment temperature are versatile products that slowly oxidize in air at 150 ° C. (6.85 μm in terms of peak length). If you want to achieve 6 μm (209.8 ° C) in terms of peak wavelength, it is necessary to select carbon fiber felt made of carbon fiber with a heat resistant temperature higher than 150 ° C. .. In the case of the reinforcing insulated metal wire 11 constituting the string-shaped carbon fiber felt rod 12, for example, when an insulating polyamide-imide copper wire is used, the heat resistant temperature of the polyamide-imide fiber is 275 ° C. (in terms of peak wavelength). It is around 5.29 μM). Further, although the alumite-treated film has an insulating property, cracks occur at about 100 ° C., so the specifications are such that it is used at 100 ° C. (a peak wavelength of about 7.77 μm) or less. Therefore, it is necessary to determine the specifications of the cylindrical tube 7 containing the string-shaped carbon fiber felt 8 and the string-shaped carbon fiber felt rod 12 and the specifications of other members to be used according to the purpose of use.

When determining the properties of the cylindrical tube 7 containing the string-shaped carbon fiber felt 8 and the string-shaped carbon fiber felt rod 12 according to the purpose of use, the heat-resistant temperature of the resin, for example, the heat-resistant temperature of the resin and the resin are configured. It is important to select the cylindrical tube in consideration of the material properties of the cylindrical tube 7 in consideration of the absorption spectrum of the material (an example is shown in FIG. 7). For example, when irradiating far-infrared rays to the soil where animals and plants are grown, consider radiating in all directions, consider the distance to the animals and plants and soil, and consider the peak length to be 100 ° C (7.77 μm) or less. It is possible to deal with it by radiating far infrared rays at the temperature of. For example, when it is used for slow drying of agricultural products, resins, etc., it is required to use far-infrared radiation up to a temperature considering the peak length of about 200 ° C. (6.12 μm) in terms of peak length. For example, when used at a temperature of 100 ° C. (7.77 μm) or less in consideration of the peak wavelength, the deterioration start temperature of the carbon fiber of the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is about 150 ° C., which is the lowest. For example, in the case of a resin, a heat-resistant rigid polyvinyl chloride tube (HT) having an operating temperature range of 5 ° C to 90 ° C (the absorption spectrum of vinyl chloride is shown in FIG. 7) or an operating temperature which is a kind of plastic. Among resins such as polyolefin tubes with a range of -60 ° C to 100 ° C, it is conceivable to use a cylindrical tube made of a resin having a high transmittance, although it depends on the wavelength of far infrared rays. Alternatively, when used in a temperature range of about 150 ° C. to 200 ° C., the quality of the carbon fiber deterioration temperature of the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is 150 ° C. to 200 ° C. or higher. In the case of a cylindrical tube 7 containing a string-shaped carbon fiber felt 8 and a string-shaped carbon fiber felt rod 12, for example, in the case of a resin, the deterioration temperature of the carbon fiber is about 150 ° C. to 200 ° C. or higher or higher. Select by looking at the characteristics of far-infrared transmission with heat-resistant, for example, plastic resin.

When a cylindrical tube 7 containing a string-shaped carbon fiber felt 8 or a string-shaped carbon fiber felt rod 12 is selected, a fingerprint region in which a substance-specific absorption spectrum appears, which is also used for identifying chemical substances in addition to heat resistance. In addition to the frequency region (wavelength region) called (wavelength 1,300 cm ^{-1 (7.69 μm) to 650 cm -1 (} 15.38 μm)), when considering the time when the influence of the atmosphere is small near the object to be radiated. Selects a resin tube made of a resin having a high transmittance of far infrared rays of a required wavelength, taking into consideration the absorption characteristics in the region up to 6 μm on the short wavelength side (209.8 ° C. in terms of peak wavelength). ..

For example, in the case of vinyl chloride, which is used at a low temperature of 100 ° C. or lower and whose transmittance is shown in FIG. 7 in the far infrared rays of 6 μm to 10.6 μm, the material thereof has a wavelength of 6 μm (210 ° C.) to about 6. The transmittance between 6.6 μm (166 ° C) exceeds 90%, but the transmittance between about 6.6 μm (166 ° C) and 10.6 μm (0 ° C) is about 61% and about 37. It goes up and down between%. Further, for example, in the case of the natural rubber shown in FIG. 7, the transmittance changes drastically when the wavelength is between about 6 μm and about 7.5 μm, but it is about 7.5 μm (113 ° C) to 10.6 μm (0 ° C). The transmittance is high between them, and it fluctuates between about 61% and 69%. Therefore, when considering the temperature corresponding to the peak wavelength of far infrared rays radiated from the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12 and the heat resistant temperature of the resin tube, the maximum temperature of vinyl chloride is vinyl chloride. If the temperature is set to 90 ° C (8 μm), which is equivalent to the heat resistant temperature of, the range of use of far infrared rays that can be used is between 8 μm (90 ° C) and 10.6 μm (0 ° C), although the transmission rate of far infrared rays decreases. Will be used. Since this wavelength range corresponds to the range of atmospheric windows and growing rays of 0 ° C. or higher, it is useful for heat insulation of animals, plants and soil in which plants are grown. When far infrared rays having a peak wavelength of 200 ° C (6.12 μm) or 210 ° C (6 μm) are required, carbon fiber having a certain degree of heat resistance at atmospheric pressure and carbon fiber using a cylindrical tube 7 such as resin are used. A far-infrared ray generator provided with the heater 4 is applied.

The energy density of various spectral spectra of far infrared rays emitted from the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12, and the distance transmitted from the cylindrical tube through the cylindrical tube depending on the material of the cylindrical tube. Differences occur between the energy densities of the various spectra of infrared light. Therefore, according to the characteristics of the material constituting the cylindrical tube, a large amount of far infrared rays having a specific wavelength of far infrared rays generated from the string-shaped carbon fiber felt 8 or also the string-shaped carbon fiber felt rod 12 are absorbed by the cylindrical tube. The energy density of the spectrum transmitted from the cylindrical tube to the outside varies depending on the material of the cylindrical tube. Therefore, when a cylindrical tube of a certain material exists, by using another cylindrical tube made of a different material from that cylindrical tube, the far-infrared wavelength spectrum that is absorbed and reduced by one of the cylindrical tubes with low transmittance can be obtained. A far-infrared generator consisting of a carbon fiber heater with two cylindrical tubes of different materials that can be covered by the wavelength spectrum of another cylindrical tube. Alternatively, a far-infrared generator equipped with a carbon fiber heater 4 made of three or more cylindrical tubes made of different materials.

The string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 is energized from a cylindrical tube made of a resin, rubber, or the like containing the string-shaped carbon fiber felt rod 12 or the string-shaped carbon fiber felt rod 12 to be far away. When emitting infrared rays, not only the far infrared rays are absorbed by the cylindrical tube 7, but also the far infrared rays spectrum is absorbed according to the absorption spectrum peculiar to the substance constituting the material of the cylindrical tube 7, so that the string-shaped carbon fiber felt. If the string-shaped carbon fiber felt rod 12 or the string-shaped carbon fiber felt rod 12 is not built in the cylindrical tube, that is, it does not pass through the cylindrical tube or the like and can directly radiate far infrared rays in the air and irradiate the object, it is one of the far infrared rays. Only the portion is absorbed by the air, not by the cylindrical tube, and it is possible to directly irradiate the object to be irradiated. Therefore, as shown in FIG. 8, when a cylindrical tube 16 made of metal, for example, mirror-polished aluminum, can be opened to half of the metal tube by stopping one side, the inner surface of the semi-cylindrical metal is a reflector. Then, a string-shaped carbon fiber felt 8 or a string-shaped carbon fiber felt rod 12 is installed at the focal portion of the semi-cylindrical body with an insulator 17 such as FRP as a support, and the string-shaped carbon fiber felt 8 or also a string-shaped A far-infrared generator equipped with a carbon fiber heater 4 capable of efficiently and directly irradiating a target object with far-infrared rays emitted from a carbon fiber felt rod 12 and far-infrared rays reflected from the inner surface of a semi-cylindrical surface.

The material of the cylindrical tube is described as a cylindrical resin tube in FIGS. 5 and 6, or is also simply described as a cylindrical tube in the paragraph, but may be a cylindrical tube of various materials.

Although the container containing the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod is described above as a cylindrical tube, it may be a lamp.

Although described as a resin cylindrical tube above, it may be a film in view of the heat resistant temperature, the transmittance of far infrared rays, the life, and the like.

If the manufacturing price is not taken into consideration as the material of the cylindrical tube, a carbon fiber heater using a cylindrical tube made of germanium, barium fluoride, etc., which has a small absorption spectrum peculiar to the substance.

A carbon fiber heater fixed from the outside of the cylindrical tube with a metal caulking or the like in order to fix the string-shaped carbon fiber felt 8 or the string-shaped carbon fiber felt rod 12 mounted in the cylindrical tube of resin or the like so as not to move in the cylindrical tube. ..

Inexpensive, easy to handle, and energy-saving, it enables direct irradiation of far-infrared rays called growing rays to soil, plants and animals in a limited area, and can be industrially used as a low-temperature long-time drying device. There is sex.

If there are multiple string-shaped carbon fiber felts or string-shaped carbon fiber felt rods built into the cylindrical tube, stack those with a small square cross section compared to the cylindrical tube so as to fill the cylindrical tube. Also, a combination of a small square shape and a large square shape may be used. Alternatively, a string-shaped carbon fiber felt and a string-shaped carbon fiber felt rod may be combined and incorporated.

If necessary, dry air may be inserted into the cylindrical tube in order to remove the adverse effect of moisture contained in the air in the cylindrical tube. Alternatively, it may be evacuated again.

1 planar carbon fiber felt 2 String carbon fiber felt cut from planar carbon fiber felt 3 Diagonal cross section of string carbon fiber felt 4 Carbon fiber heater 5 Temperature controller 6 AC power regulator 7 Cylindrical resin tube 8 Cross section Square string-shaped carbon fiber felt 9 Fine string-shaped carbon fiber 10 Metal caulking 11 Insulated metal wire 12 String-shaped carbon fiber felt rod with square cross section 13 Lead wire 14 Binding band 15 Connection terminal 16 Metal semi-cylindrical 17 Support Bar 18 Metal semi-circle, etc. Lid side

Claims (6)

The string-shaped carbon fiber felt applied to the carbon fiber heater is cut by a slight tensile stress, and the carbon fiber is easily peeled off by the stress in the vertical and horizontal directions. Therefore, in order to reinforce the string-shaped carbon fiber felt applied to the carbon fiber heater and at the same time to facilitate insertion into the cylindrical tube, it is easily elastically deformed, insulated against electricity, and insulated. A carbon fiber heater characterized by fixing a string-shaped carbon fiber felt to a treated metal wire or resin wire to create a new string-shaped carbon fiber felt rod and applying it. A string-shaped carbon fiber felt or a string-shaped carbon fiber felt rod that emits far infrared rays is inserted into a cylindrical tube filled with air that constitutes the carbon fiber heater. When both ends of the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rod are energized to generate far infrared rays, the amount of heat possessed by the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rod inserted into the cylindrical tube is applied. To maximize and at the same time minimize the absorption of far infrared rays by the air in the tube and at the same time suppress the oxidation of the string-shaped carbon fiber felt or the carbon fiber constituting the string-shaped carbon fiber felt rod at the time of temperature rise. A string-shaped carbon fiber felt or also a string-shaped carbon fiber felt rod having a square or circular cross section, inserted into the cylindrical tube for the purpose of reducing the amount of air in the cylindrical tube, the cylindrical tube cross section. A carbon fiber heater characterized by filling a cylindrical tube so that the gap between the two is minimized. The far infrared rays emitted from the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rod constituting the carbon fiber heater are absorbed by the material-specific absorption rate of the cylindrical tube passing by the wavelength. Therefore, the material of the cylindrical tube can transmit with high transmission rate in the wavelength range of far infrared rays in the wavelength range of 6 μm (8 μm according to the material) to 14 μm (15 μm according to the material), which is the growing light beam in the far infrared rays. Set and control the voltage applied to both ends of the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rod so that far-infrared rays can be generated at a temperature corresponding to the peak wavelength in the far-infrared wavelength range. A far-infrared ray generator equipped with the carbon fiber heater. In separate carbon fiber heaters, the voltage applied to both ends of the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rods inserted into the cylindrical tubes of different materials provided in each carbon fiber heater is controlled, and each cylindrical tube is used. When obtaining far-infrared fibers in different wavelength ranges transmitted by different high transmittances from, two or more cylindrical tubes having different wavelength ranges transmitted by high transmittance are provided, and the far-infrared fibers are absorbed by the cylindrical tubes made of different materials. A far-infrared device equipped with multiple carbon fiber heaters that emit far-infrared rays of different wavelengths, which makes it possible to cover the area with far-infrared rays transmitted from a cylindrical tube made of a different material with high transmittance. By energizing both ends of the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rod constituting the carbon fiber heater and controlling the voltage, the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rod is also used. The upper limit of the voltage should be set so that the temperature of the carbon fiber heater can be increased from 0 ° C and shifted to the peak wavelength on the short wavelength side corresponding to the lowest allowable heat resistant temperature among the members constituting the carbon fiber heater. A featured far-infrared generator. When the string-shaped carbon fiber felt or the string-shaped carbon fiber felt rod is used, one side of the metal cylindrical tube is opened, and the light incident on the reflecting surface from the outside on the side of the metal tube having the reflecting surface focuses. One or more string-shaped carbon fiber felts or string-shaped carbon fiber felt rods fixed at the position with an insulating support rod provided on a metal cylindrical tube are energized, and among the far infrared rays generated, the purpose of irradiation is Equipped with a metal cylindrical tube type carbon fiber heater that can efficiently radiate far infrared rays toward the object to be irradiated and far infrared rays reflected from the reflective surface of the semi-cylindrical metal. Far infrared device.

Images