JP2005164171A - Drying radiation heat source device and drying device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drying radiation heat source device having sterilizing function for drying textile products with high efficiency, and to provide a drying device using the same. <P>SOLUTION: The drying radiation heat source device A comprises a halogen heater 1 and a ultraviolet lamp 2. Inside a casing covering the halogen heater 1 and the ultraviolet lamp 2, a reflecting plate 3 is provided having high light reflecting efficiency. The peak wavelength of a ultraviolet ray emitted from the ultraviolet lamp 2 exists within a range of about 0.26-0.4 μm. The energy distribution of a light emitted from the halogen heater 1 having a color temperature of 2,200 K or its vicinity ranges about 0.4-3 μm. The peak wavelength of the emitted light energy exists in a near infrared region around about 1-1.5 μm. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drying radiant heat source device equipped with a heat source for drying textile products such as clothing, futons and footwear, and a drying device using the same.

As a conventional heat source for drying, what heats air in order to supply warm air in a drying device is known. When such a heat source is used, for example, in a clothes dryer, the temperature of the inside of the dryer and the textile product is increased due to heating the air to a high temperature. Thereby, the clothes can be dried. Further, when the fiber product is heated and dried by the light radiant heater, the heat energy applied to the fiber product directly acts on the moisture in the fiber, so that the drying can be performed with very high energy efficiency. Further, in both cases where the fiber product is dried using a heat source and where the fiber product is dried using a light radiation heater, the fiber product can be sterilized by high heat.
Japanese Patent Publication No. 5-5519 Japanese Patent Publication No. 5-50959

  However, in drying with warm air, the heat energy applied to the object to be dried is first transmitted from the heat source to the air, and then from the air to the textile product, so that the energy efficiency is low. Moreover, when drying a textile product by heating it with warm air or a light radiation heater, it is difficult to kill heat-resistant bacteria such as Bacillus subtilis.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a drying radiant heat source device capable of drying a textile product with high efficiency and having a sterilizing function, and a drying device using the same. Is.

  The drying radiant heat source device of one aspect of the present invention has a first irradiation means for irradiating light to be dried with light having a peak wavelength in the infrared region, and a peak wavelength in the ultraviolet region with respect to the material to be dried. Second irradiating means for irradiating light.

  According to the radiant heat source device for drying according to the one aspect described above, it is possible to simultaneously radiate light having one or more peaks in the ultraviolet region and the infrared region, and a total of two or more peaks, to an object to be dried such as clothing. Thus, both drying and sterilization can be performed simultaneously.

  A drying radiant heat source device according to another aspect of the present invention includes an ultraviolet irradiator that irradiates an object to be dried with ultraviolet rays, and a light radiation heater that irradiates the dried object with light to heat the dried object. ing.

  According to the drying radiant heat source device of the other aspect described above, it is possible to simultaneously perform irradiation of ultraviolet rays and evaporation of moisture by heat on an object to be dried.

  The drying radiant heat source device according to another aspect of the present invention preferably further includes a control device that independently controls ultraviolet irradiation by the ultraviolet irradiator and light irradiation by the light radiant heater. This control device controls both of the ultraviolet irradiation by the ultraviolet irradiator and the light irradiation by the light radiating heater at the same time, and only one of the ultraviolet irradiation by the ultraviolet irradiator and the light irradiation by the light radiating heater. It is possible to execute control to perform

  According to said structure, it can be used according to a use, such as being able to radiate only infrared rays with respect to a to-be-dried object, can radiate | emit only ultraviolet rays, or can irradiate both. .

  The light radiation heater preferably has a color temperature in the range of about 2000K to 2500K. According to this light radiation heater, it is possible to heat the object to be dried without depending on the color tone.

  The light radiation heater preferably has an energy distribution range of the emitted light of about 0.4 μm to 3 μm, and the peak wavelength of the energy of the emitted light exists in the near infrared region.

  Further, the ultraviolet irradiation device preferably irradiates the object to be dried with light having a wavelength in the ultraviolet region of 0.26 μm to 0.4 μm. According to this ultraviolet irradiation device, if ultraviolet rays having a peak on the long wavelength side are used in the above-mentioned wavelength region, the same sterilizing effect and disinfection effect as drying by sunlight can be obtained, and the ultraviolet ray having a peak on the short wavelength side. Can be used to kill any bacteria.

  The drying device of the present invention is equipped with the drying radiant heat source device according to one aspect described above or another aspect.

  Hereinafter, a radiant heat source device for drying according to an embodiment of the present invention will be described in detail with reference to the drawings. However, the configuration of the drying radiant heat source device of the present invention is not limited to the configuration of the drying radiant device of the embodiment described below.

  The structure of the radiant heat source apparatus A for drying of this Embodiment is shown by FIGS. 1-3.

  The drying radiant heat source device A is provided with a halogen heater 1 and an ultraviolet lamp 2 which are light radiant heaters. On the inner side surface of the housing that covers the halogen heater 1 and the ultraviolet lamp 2, a reflector 3 having high light reflection efficiency is provided. The halogen heater 1 may be a ring type or a straight pipe type that can reduce the mounting area.

  The ultraviolet light emitted from the ultraviolet lamp 2 has a wavelength peak in the range of about 0.26 μm to 0.4 μm. As the ultraviolet irradiation means satisfying this condition, a black light, a sterilization lamp or the like can be considered, but any kind and shape may be used.

  The halogen heater 1 having a color temperature of 2200K and its vicinity has an energy distribution range of emitted light of about 0.4 μm to 3 μm, and the peak wavelength of the energy of emitted light is about 1 to 1.5 μm. It exists in the near near infrared region. Such a light heater (light radiant heater) having a high color temperature has a characteristic that about 94% of the input energy is converted into radiant energy, and 86% of the radiated energy is radiated as infrared rays. It is a radiation heating source with low loss and high energy conversion efficiency.

Generally, the radiant energy (radiant heat W / cm ² ) increases in proportion to the fourth power of the absolute temperature. Therefore, the higher the temperature of the light source as the heat source, the larger the radiant heat.

  However, if the color temperature of the light source as the heat source increases, the emission wavelength of light shifts from the long wavelength side to the short wavelength side. Therefore, when the color temperature is about 5500 K that approximates to sunlight, the light emitted from the light source is visible light that exists in a region near the peak wavelength of 0.5 μm. In addition, when light is emitted to a textile product, the heat absorption rate varies greatly depending on the color tone of the textile product. For example, when comparing a fiber product with a white color tone and a fiber product with a black color tone, it can be seen that there is a disadvantage that there is a large difference in the amount of heat applied to the fiber product. Therefore, it is desirable that the color temperature of the halogen heater 1 is around 2200K. According to the halogen heater 1 having such a color temperature, the amount of visible light is about 7% of the total amount of radiation, which is a very small value. Can be done.

  FIG. 4 is a graph showing experimental results for measuring the difference in water evaporation due to the difference in heat source.

  In this experiment, 300 g of water was heated by an 800 W heater and an 80 W fan in each of a case where a warm air heater was used and a case where a light heater (halogen heater which is a light emission heater) was used, and the remaining after 30 minutes. The amount of water evaporation was determined from the amount of water. Thereby, the evaporation amount of water when the warm air heater was used was compared with the evaporation amount of water when the light heater was used. As a result, when the amount of water evaporation when the water was heated using the warm air heater was 1, the amount of water evaporation when the light heater was used was 1.58. From this result, it can be seen that the light heater can heat water with higher efficiency than the hot air heater.

  FIG. 5 is a diagram showing the results of measuring the spectral characteristics (reflectance) of a dry cotton cloth as an example of a textile product.

  From FIG. 5, first, the reflectance greatly depends on the color tone in the visible light region (region of about 0.4 μm to 0.8 μm), and in the near infrared region (region of about 0.8 μm to 2.5 μm), It turns out that it hardly depends on the color tone. In other words, in a light heater in which the peak wavelength of light emitted from the light source is in the near infrared region (within a color temperature range of about 2000K to 2500K), it is possible to heat the fiber product without depending on the color tone. From FIG.

  FIG. 6 is a diagram showing the results of measuring the spectral characteristics (reflectance) of the wet cotton cloth.

  When the cotton cloth contains water, the spectral characteristics do not vary greatly depending on the color tone, and FIG. 6 shows, as an example, the reflectance with respect to the water content of the white cotton cloth. However, when the cotton cloth contains water, the reflectance of the cotton cloth decreases remarkably (the absorption ratio increases) as the water content increases, unlike the case where the cotton cloth is dry. This shows that the reflectance of cotton cloth has a strong tendency to depend on the water content of water.

  In addition, a moisture content is shown by following Formula.

Moisture content [%] = {(wet cloth weight [g] −dry cloth weight [g]) / dry cloth weight [g]} × 100
From the spectral characteristics of cotton cloth as described above, it can be said that the halogen heater 1 having a color temperature of around 2200 K is suitable for drying fiber products with a high water content, but the amount of ultraviolet rays emitted is very small, and the sterilizing effect by ultraviolet rays is I can't expect much. Therefore, the fiber product is irradiated with light having a wavelength in the ultraviolet region of about 0.26 to 0.4 μm by the ultraviolet irradiation device so that the fiber product is sterilized as it is dried. If ultraviolet rays having a peak on the long wavelength side are used in the above-mentioned wavelength region, the bactericidal effect and disinfection effect similar to drying by sunlight can be obtained, and if any ultraviolet ray having a peak on the short wavelength side is used, all bacteria are killed. Can be made.

  As described above, the radiant heat source device for drying according to the present embodiment can simultaneously radiate light having one or more peaks in the ultraviolet region and the infrared region, and a total of two or more peaks, to an object to be dried such as clothing. It is. That is, the radiant heat source device for drying according to the present embodiment is a device that can emit light having a wavelength effective for both drying and sterilization. Furthermore, the drying radiation device according to the present embodiment can provide only infrared light if a control device that independently controls each of the light source having the peak wavelength in the ultraviolet region and the light source having the peak wavelength in the infrared region is provided. It can be used according to the application, such as being able to radiate or only radiating ultraviolet rays.

  Next, an example of a drying device on which the above-described drying radiant heat source device A is mounted will be described with reference to the drawings. If the radiant heat source device for drying can irradiate the object to be dried with high efficiency, the mounting position and the number thereof are different from those of the drying device shown in this example described below. It may be.

(Example 1) Clothes dryer The structure of the clothes dryer B in which the radiant heat source apparatus A for drying is mounted is shown by FIG.

  In the clothes dryer B, a drum 5 serving as a drying chamber and a fan 6 for exhausting air are fixed in a main body 4 to a rotatable support shaft 7, and the rotation of a motor 8 is a pulley. By being transmitted through 9, the direction in which the support shaft 7 extends rotates around the rotation axis. The heat source device A of the present embodiment is mounted on the door 10 of the clothing entrance in order to irradiate the clothing 12 with light with high efficiency. Therefore, the lower surface of the drying radiant heat source device A is covered with the protective net 11 so that the radiant heat source device A for drying and the garment 12 are in direct contact with each other so that local overheating of the garment 12 does not occur.

  The garment 12 receives light emitted from the halogen heater 1 and is heated by directly converting the light into heat in accordance with the light absorption rate of the garment. Thereby, as the temperature of the garment 12 rises, the residual moisture evaporates as water vapor. The clothing 12 is sterilized by being irradiated with ultraviolet rays. The air introduced into the clothes drying apparatus B from the air inlet 13 is introduced into the drum 5 through the circulation path 14 and discharged to the outside of the clothes dryer B along with the water vapor in the drum 5.

(Example 2) Clothes storage FIG. 8 shows the configuration of a clothes storage C in which the radiant heat source device A for drying is mounted.

  The garment storage in this embodiment is a garment 15 that is suspended and stored in a tidy state, such as a clothes basket or a closet, and wrinkles, moisture, etc. of the garment 15 are removed. Since the radiant heat source device A for drying is installed in the upper part of the main body 18 of the clothing storage case C, light is irradiated to the shaped and suspended clothing 15 in the clothing storage case C. The moisture remaining in 15 is evaporated and the garment 15 is sterilized. The water vapor generated at this time is removed by the air existing outside the clothing storage case C introduced from the intake port 16 and then the air flow generated by the rotation of the exhaust fan 17 installed in the clothing storage case C. And discharged to the outside of the clothes storage C.

  The radiant heat source device A for drying according to the present embodiment is not only applicable to a clothes dryer and a clothes storage, but also a laundry dryer for drying laundry and a futon for drying a futon. The present invention can be applied to general drying apparatuses such as a dryer, a footwear dryer for removing moisture from footwear, and a fiber dryer for removing moisture attached to fibers.

  In summary, in the radiant heat source device for drying and the drying device using the same according to the present embodiment, the heating source for evaporating moisture from the textile product is of a radiant heat transfer type using light (electromagnetic waves). The direct heat conversion of the textile product is performed without a heat medium. Therefore, if a light radiant heater as a heating source is used in a light heater (halogen heater) having a color temperature of around 2200K, about 94% of the input power can be converted into radiant energy, and about 80% of the radiant energy can be converted. % Or more can be concentrated in the near infrared wavelength region. Therefore, the object to be dried can be heated with high energy efficiency, and a heat absorption action and a heat generation action independent of the color tone of the textile product can be obtained.

  Furthermore, the radiant heat source device for drying according to the present embodiment and the drying device using the drying device are provided with an ultraviolet irradiation device, so that light having at least one peak wavelength in each of the ultraviolet region and the infrared region is applied to the textile product. Since it can irradiate, it is possible to dry while obtaining a higher sterilization effect.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a perspective view of the radiant heat source device for drying of an embodiment. It is a top view of the radiant heat source device for drying of an embodiment. It is the III-III sectional view taken on the line of FIG. It is a graph which shows the relationship of the evaporation amount of the water resulting from a heat source (Evaporation water amount of a warm air heater is set to 1). It is a graph which shows the spectral characteristic of the dry cotton cloth (white, red, black). It is a graph which shows the spectral characteristic of the cotton cloth (white) containing water. It is a figure which shows the structure of the clothes dryer using the radiation heat source apparatus for drying of embodiment. It is a figure which shows the structure of the clothes storage using the radiant heat source apparatus for drying of embodiment.

Explanation of symbols

A Radiant heat source device for drying, B Clothing dryer, C Clothing storage, 1 Halogen heater, 2 UV lamp, 3 Reflector, 4 Main body, 5 Drum, 6 Fan, 7 Support shaft, 8 Motor, 9 Pulley, 10 Drying Machine door, 11 Protective net, 12, 15 Clothing, 13, 16 Air inlet, 14 Air circulation path, 17 Exhaust fan, 18 Body.

Claims (7)

A first irradiating means for irradiating the object to be dried with light having a peak wavelength in the infrared region;
A radiant heat source device for drying, comprising: a second irradiation means for irradiating the object to be dried with light having a peak wavelength in an ultraviolet region. An ultraviolet irradiator that irradiates the object to be dried with ultraviolet rays;
A drying radiant heat source device, comprising: a light radiant heater for irradiating the dried product with light to heat the dried product. A control device that independently controls the irradiation of ultraviolet rays by the ultraviolet irradiator and the irradiation of light by the light radiating heater;
The control device includes a control for simultaneously performing both the ultraviolet irradiation by the ultraviolet irradiator and the light irradiation by the light radiating heater, and the ultraviolet irradiation by the ultraviolet irradiator and the light irradiation by the light radiating heater. The radiant heat source device for drying according to claim 2, wherein control for performing only one of the operations is possible.   The radiant heat source device for drying according to claim 2, wherein the light radiant heater has a color temperature in a range of about 2000K to 2500K.   The radiant heat for drying according to claim 2, wherein the light radiant heater has an energy distribution range of radiated light of about 0.4 μm to 3 μm, and a peak wavelength of the energy of the radiated light exists in a near infrared region. Source equipment.   The radiant heat source device for drying according to claim 2, wherein the ultraviolet irradiation device irradiates the object to be dried with light having a wavelength in the ultraviolet region of 0.26 μm to 0.4 μm.   The drying apparatus carrying the drying radiant heat source device in any one of Claims 1-6.

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