JP2005123009A - Radiation heating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radiation heating apparatus having a thin shape, in which an aperture portion of heat ray can be made large and energy density of the aperture portion can be kept low. <P>SOLUTION: A radiation heating apparatus comprises energy emission means 1 to emit heat ray, reflection means 2 for reflecting a part of heat ray emitted from the energy emission means 1, convergence/diffusion means to converge or diffuse heat ray emitted from the energy emission means 1 and heat ray from the reflection means 2, shielding means 4 to attenuate visible region light contained in heat ray from the energy emission means 1, and the convergence/diffusion means 5. Thus, radiation energy density on emissive surface can be decreased, the apparatus is miniaturized and waste heat treatment is easily realized. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a radiant heating device using radiation of heat ray energy such as infrared rays, and an air conditioner using the radiant heating device.

This type of conventional radiant heating device (radiant heating device) is an incandescent bulb that emits visible light and infrared light (heat rays), and is formed in a paraboloid shape so as to surround the incandescent light bulb, and selects visible light and infrared light. The reflecting mirror and the visible light blocking filter provided on the emission surface of the reflecting mirror are used for heating by direct heating by infrared radiation emitted from the incandescent bulb. In such a radiant heating device, in order to reduce “glare” caused by visible light contained in an incandescent bulb, a visible light blocking filter is provided, or a reflecting mirror that transmits visible light while reflecting infrared light is provided, and visible light is reduced. Light is scattered in the direction of the back surface of the reflecting mirror (see, for example, Patent Document 1).
JP-A-8-49860

However, the conventional radiation heating device has the following problems.
(1) In order to effectively perform heat radiation remotely, it is necessary to squeeze the opening of the infrared reflecting concave mirror surrounding the incandescent bulb. However, if the input to the lamp is increased with the aperture narrowed down in this way, the energy density per unit area of the aperture increases, and the radiation temperature at the front increases, resulting in structural and safety problems. There is. For this reason, in order to expand an opening part and to reduce the energy density per unit area, it is necessary to widen the opening part of a concave mirror, and there exists a problem that a concave mirror enlarges.
(2) Since a lamp is provided inside the infrared reflecting concave mirror, exhaust heat treatment from this lamp also becomes a problem. In order to cope with this, if the intake / exhaust port is provided on the concave mirror surface side, the reflection area is reduced. Further, if this is provided on the front surface, it becomes a light shielding material, which causes a problem that efficiency is lowered.
(3) There is a problem that the depth dimension is required to some extent because of the structure in which the heat ray is reflected / converged by the infrared reflecting concave mirror.

  The present invention has been made to solve such a conventional problem, and is a radiant heating device that is thin, can have a wide opening of a heat ray, and can keep the energy density of the opening low. The purpose is to provide or a problem to be solved. Further, as an application development, it is also an object to provide a means that enables mounting of the radiant heating device to various devices including an air conditioner, or a problem to be solved.

  In order to solve the above problems, a radiant heating device according to the present invention, or an air conditioner equipped with the radiant heating device, includes an energy release means that emits heat rays including at least infrared rays, and one of the heat rays emitted from the energy release means. Reflecting means for reflecting the light, converging / diffusing means for converging or diffusing the heat rays emitted from the energy emitting means and the heat rays reflected by the reflecting means, and attenuating visible light contained in the heat rays emitted from the energy emitting means And a light shielding means.

  In the radiant heating device or the air conditioner according to the present invention, the heat rays from the radiant heating device can be freely distributed by the converging / diffusing means for converging or diffusing the heat rays emitted from the energy releasing means and the heat rays from the reflecting means. It is possible to converge or diffuse, and it is possible to freely set the shape of the opening. For this reason, the energy density in the vicinity of the opening can be arbitrarily set, and safety can be improved. That is, it is possible to provide a radiant heating device that is thin, has a wide opening for heat rays, and has a low energy density in the opening. In addition, it is possible to implement the radiation heating device in various devices including an air conditioner.

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
(Embodiment 1)
FIG. 1 shows a cross-sectional structure of a radiation heating apparatus according to Embodiment 1 of the present invention.
In FIG. 1, reference numeral 1 denotes energy emission means for emitting visible rays and so-called infrared ray heat rays. For example, a halogen lamp in which a halogenated gas is sealed in an incandescent bulb to achieve long life and continuous use at high temperatures. It is. Although it is more effective if only the heat ray region can be emitted without including the visible light region, the two are usually included at a constant ratio. Reference numeral 2 denotes a first reflecting means for reflecting light rays and heat rays in the same manner out of the energy from the energy emitting means 1, which is composed of a so-called metal reflecting mirror surface, etc., and is emitted from the energy emitting means 1. A part of light rays and heat rays are effectively reflected by the second reflecting means 3.

  The second reflecting means 3 directly receives light rays and heat rays from the energy emitting means 1 and receives light rays and heat rays resulting from reflection from the first reflecting means 2 so that their optical axes are substantially aligned, The direction is changed. The reflected rays and heat rays from the second reflecting means 3 are guided to a discharge port having a substantially parallel optical axis and a large area. For example, when this light ray and heat ray are used as a radiant heating device for a human body, it is necessary to attenuate the visible component because it is dazzling if it contains visible light ray and heat ray at a certain ratio. The light-shielding means 4 for attenuating visible light rays is formed by forming an optical filter that selectively transmits wavelengths on a glass or resin plate. Furthermore, a converging means 5 for converging heat rays formed by an optical convex lens is provided on the front surface. Moreover, when diffusing a heat ray widely, you may comprise the converging means 5 with a concave lens (diffusion means) as needed.

  According to the configuration shown in FIG. 1, the heat rays and visible rays emitted from the energy emitting means 1 become parallel rays having substantially the same optical axis by the reflecting means 2 and 3 and are emitted from the opening. Further, the visible light is attenuated by the light shielding means 4 provided in the opening, becomes mainly heat rays, and a predetermined beam is formed by the converging means 5 (or the diffusing means) by the lens provided according to the reach distance and range. .

  According to this configuration, by appropriately setting the shape of the second reflecting means 3 and the positional relationship between the reflecting means 2 and 3, the depth direction as the radiant heating device can be shortened, and the opening portion A large area can be taken. For this reason, the energy density in the opening can be lowered. In the case of a simple concave mirror, the radiation area and direction are uniquely determined in the aspect determined by the shape of the reflector, that is, the depth and the opening area, and the degree of freedom of the shape is low. Accordingly, the radiation area and direction can be determined by the convergence means 5 (or the diffusion means). For this reason, the freedom degree with respect to the shape becomes very high.

(Embodiment 2)
In Embodiment 2, high-temperature light emitting means such as a carbon heater is used as the energy releasing means 1 instead of a light emitting lamp such as a halogen lamp. Other points are the same as in the first embodiment. In the second embodiment, there is an advantage that the wavelength of the radiant heat ray can be changed by controlling the temperature of the carbon heater, and “strong” radiance and “soft” radiance are properly used as necessary. There is an advantage that it is possible. Further, by using the heating element at a low temperature, it is possible to easily and effectively emit far-infrared wavelengths.

(Embodiment 3)
In Embodiment 3, ionized gas discharge energy generating means for emitting a specific wavelength by gas discharge in an electric field such as a neon discharge tube is used as the energy releasing means 1. Other points are the same as in the first embodiment. In the third embodiment, the spectrum of a specific heat ray wavelength can be increased, the emission ratio of visible light can be reduced, and stable radiation can be realized at a relatively low temperature. There is.

(Embodiment 4)
2A and 2B show the fourth embodiment. In the fourth embodiment, as the energy emitting means 1, a single wavelength emitting means (principle) using electronic excitation energy in a solid such as an LED or a laser diode is used. In the fourth embodiment, there is an advantage that an energy output of only a specific wavelength can be realized and a stable radiant feeling can be realized in a low temperature state.

In addition, by using the electron excitation energy in the solid, the energy density in the energy emission source can be increased, and it becomes easy to configure point emission, and the reflection means 2 and 3 and the light shielding means 4 are not required.
That is, as shown in FIGS. 2A and 2B, the plurality of infrared light emitting diodes 6 constitute a reflection surface and are attached to a fixing substrate 7. According to this configuration, the light-emitting diode 6 can be considered as a point light source as compared with the entire apparatus, and a plurality of the light-emitting diodes 6 can be easily arranged in a planar shape. For this reason, it becomes easy to construct a substantially parallel optical axis from the time of light emission, and the reflecting means 2 and 3 used in the first embodiment are not necessary. In addition, since electron excitation energy is used, light is emitted at a single spectrum wavelength and does not include a visible region component. For this reason, the light shielding means 4 is also unnecessary, and the radiant heating device can be further reduced in size and weight.

(Embodiment 5)
FIG. 3 shows a cross-sectional structure of a radiation heating apparatus according to the fifth embodiment, in which the entire radiation heating apparatus is driven to control the radiation direction.
3, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In FIG. 3, 8 is a hinge part which supports and holds the rotation of the radiant heating device, and has a degree of freedom in the rotation direction. Further, a driving motor 9, a screw shaft 10 that rotates by the motor 9, and a female screw portion 11 through which the screw shaft 10 passes are provided at the upper part of the radiant heating device. Here, the hinge part 8 and the motor 9 are being fixed to the board | substrate 12 (or wall surface) which has fixed the whole radiation heating apparatus. Depending on the rotation direction and feed amount of the motor 9, the distance from the substrate 12 on the upper side of the radiant heating device can be changed. As a result, it is possible to change the inclination of the entire radiant heating device, thereby changing the heat ray radiation direction.

  As a result, for example, also in a radiant heating device attached to a wall surface, the radiating direction can be freely changed, and radiation can be appropriately performed where necessary. Instead of driving the entire radiant heating device, the radiation direction is controlled even if the refraction direction is changed by changing the inclination of the reflection means 3 in the same way or by driving the inclination of the convergence / diffusion means 5. And the same effect can be obtained. Further, although the motor 9, the screw shaft 10 and the female screw portion 11 are used as the driving means, the same effect can be easily obtained even if other means such as a stepping motor is used.

(Embodiment 6)
FIGS. 4A and 4B are a plan view and a front view of the radiation heating apparatus including the refractive lens according to the sixth embodiment.
In FIG. 4A, the same components as those in FIG. FIGS. 4A and 4B show a radiant heating device in which two refractive lenses 13 and 13 ′ each having an independent rotation mechanism are provided in the opening. The refractive lenses 13 and 13 ′ can refract the heat rays output from substantially parallel rays while maintaining a parallel heat source in a predetermined direction. Therefore, by rotating the two refractive lenses 13 and 13 ′ to an arbitrary angle, it is possible to deflect the direction vertically and horizontally by combining the two refractive lenses 13 and 13 ′. Further, according to the combination of the refractive lenses 13 and 13 ', the heat source can be converged or diffused. In addition, since a refractive lens is used, it is easy to reduce the size and thickness.
Here, although two refractive lenses 13, 13 ′ are used, fine adjustment with higher reproducibility can be realized even if a larger number of lenses are used. Also, the same effect can be obtained by using a so-called Fresnel lens.

(Embodiment 7)
FIG. 5A shows a circuit configuration for driving the energy release means in the radiant heating apparatus according to the seventh embodiment, which can change the amount of radiant energy. For example, a case where a halogen lamp 14 is used as the energy release means 1 will be described.
As shown in FIG. 5B, in the halogen lamp, the emission energy (luminous intensity) and the emission wavelength spectrum change according to the applied voltage, and have almost positive characteristics with respect to the applied voltage. For example, in the radiant heating device according to the seventh embodiment, the energy is increased by increasing the output in order to quickly raise the temperature of the radiated object at the start of operation, or by shifting the spectrum of the radiant heat rays to the short wavelength region. The density can be controlled.

  Therefore, the rise time at the start of operation can be shortened. In addition, after heating, by reducing the energy density, it is possible to avoid releasing more energy than necessary, so that energy saving can be realized. In FIG. 5A, reference numeral 15 denotes a power supply device, which may be a commercial power supply. Reference numeral 16 denotes radiant energy amount varying means, which can obtain the same effect regardless of whether the power control is based on a generally known phase control method or using other power control means. Here, the halogen lamp 14 is used as the energy emitting means 1, but the same effect can be obtained with an infrared heater or a light emitting diode.

(Embodiment 8)
In the eighth embodiment, the radiant heating device includes radiant energy amount varying means 16 that changes the amount of radiant energy and radiation direction control means that controls the radiation direction. In this case, it is possible to change the radiation energy while changing the radiation direction. For example, when the radiation range is wide, it is possible to easily achieve uniform radiation over a wide range by performing radiation while changing both the radiation direction and the amount of radiation energy. In addition, even when the radiant heating target is a human body, by changing the radiant energy without excessive radiation, there is no paralysis of the sensation given to the feeling of heating, and energy-saving heating comfort can be provided It is. It is possible to achieve the same effect as the so-called “daylight through trees”.
Note that the variable amount of radiation energy and the control of the radiation direction can obtain the respective effects even if they are independent of each other or periodically synchronized.

(Embodiment 9)
FIG. 6 shows an indoor unit 18 of a separation-type air conditioner that is an example of a radiant heater equipped with a human body position detection unit 17 according to the ninth embodiment. In FIG. 6, the human body position detecting means 17 is composed of, for example, a CCD sensor or an infrared pyroelectric sensor array, and can detect the approximate position of the human body. By detecting the position of the human body by the human body position detecting means 17 and selecting in advance whether to positively radiate heat rays to the human body in advance or to avoid radiation non-selectively, a comfortable environment can be provided. . In addition, if it is a radiant heating device provided with a radiant energy amount variable means and a radiant direction control means, it can not only provide a more radiant feeling of radiant heating, but also make the radiant direction follow the movement of the human body. Can be easily realized. It is also possible to easily provide a radiant feeling evenly to a plurality of human bodies. Here, human body detection by the human body position detection means 17 has been described. However, this radiant heating device similarly applies selective radiant heating to other objects using detection means appropriate for the object. Can be realized.

(Embodiment 10)
In the tenth embodiment, a highly accurate infrared detection sensor is used as the human body position detection means 17 in the radiation heating apparatus shown in FIG. Thereby, the temperature detection of the radiation target can be realized, and the (exposed part) temperature of the human body can be measured remotely. Based on the temperature of the detection part, the amount of radiation energy from the radiation heating device and the direction of radiation are controlled by remote control, and the remote function of the radiation heating means can be realized remotely, realizing energy saving and comfortable radiation. be able to.

Furthermore, when the radiation target is a human body, it is possible to selectively avoid heat radiation to the human body.
As in the ninth embodiment, even when the radiant heating object is other than a human body, for example, in radiant heating for drying the laundry, the temperature of the laundry before and after drying is measured remotely. The degree of drying can be detected, and abnormal heating can be prevented.

(Embodiment 11)
In the eleventh embodiment, the temperature of the object to be heated is directly detected because it is a radiant heating device by being provided with a timed operation means that starts with the operation of the radiant heating device and automatically shuts off the power after a predetermined time. Abnormal heating induced by the fundamental drawback of radiant heating that cannot be performed is prevented.
In addition, it is easy to reduce the energy amount step by step by controlling the energy amount variable means instead of switching off the power source of the radiant heating device uniquely after a predetermined time using the timed operation means. Can be realized. In addition, after the time-limited operation, the output can be started or increased instead of being interrupted or reduced unambiguously as needed.

(Embodiment 12)
As shown in FIG. 7, in the twelfth embodiment, a cooling means 18 for forcibly cooling the energy releasing means 1 of the radiant heating device is provided. In FIG. 7, when a discharge tube or an incandescent lamp is used as the energy release means 1, not only affects the life and reliability due to the temperature, but also heat is accumulated inside the housing of the radiant heating device, and the entire device It also affects the safety. In the twelfth embodiment, the energy release means 1 is cooled by a blower means 18 comprising a blower. Thereby, the said subject can be solved and a comfortable and reliable radiation heating apparatus can be provided.

(Embodiment 13)
As shown in FIG. 8, in the thirteenth embodiment, the indoor unit of the wall-mounted split air conditioner is provided with the radiant heating device in the above embodiment. In FIG. 8, 19 is an indoor unit of an air conditioner. This indoor unit includes a heat exchanger 20, a blower fan 21, and a blowout port 22 as conventionally known. This indoor unit includes the radiant heater. And as a cooling means of the energy discharge | release means 1, an opening part is provided in a part of the wind circuit of an indoor unit, and the waste heat of an energy discharge | release means is discharge | released to the wind circuit of an air conditioner. That is, the air sucked from the air inlets 23 and 23 ′ provided in the radiant heating device cools the energy release means 1 and passes through the opening 24 provided in the wind circuit of the indoor unit. It is introduced into the circuit and discharged from the outlet 25 of the indoor unit to the outside (indoor space).

  As a result, it is possible to use all of the heat energy in the energy release means 1 together with radiation heating (heating) by heat rays, which is effective in terms of energy saving. Conventionally, for example, heat pump type air conditioners have provided an unpleasant state of feeling such as warm air heating from a high place, but by using it together with a radiant heating device, shortening the time at the start of heating operation In addition, comfortable control of the foot temperature is possible.

  In addition, base air conditioning in a room with a small number of people is performed using a heat pump type air conditioner, and further, by performing radiant heating selectively with the radiant heating device of the present invention, the indoor air conditioning temperature setting is raised more than necessary. In addition, energy can be saved by performing spot-like radiation.

  The example shown in FIG. 8 is an indoor unit of an air conditioner equipped with a radiant heating device, and the radiant heating device is incorporated in the front panel portion thereof. The cooling means 14 is realized by a blower in an indoor unit of an air conditioner. The cooling air is sucked from the front of the air conditioner and can be used as a part of the heating heat source in the room if the air conditioner is in operation.

(Embodiment 14)
In the fourteenth embodiment, in the air conditioner equipped with the above-described radiant heating device, the radiant heating device is driven during the cooling operation, the dehumidifying operation, or after these operations are stopped. According to the configuration of the fourteenth embodiment, the discomfort caused by cold air during cooling operation, which has been a problem in the past, can be improved by infrared radiation. That is, as a base air conditioner, while performing a cooling operation, heat compensation is performed by radiant heating for a person who feels “too cold” due to a difference in individual sensations. In addition, during the dehumidifying operation when the air temperature is relatively low, dehumidification that does not lower the temperature is desired. However, by operating the radiation heating device according to the fourteenth embodiment, air conditioning that does not decrease the perceived temperature can be realized. it can.

  In addition, after the cooling operation and the dehumidifying operation, the internal casing and heat exchanger of the air conditioner are in a dew-condensed state. Become. However, in the air conditioner including the radiant heating device according to the fourteenth embodiment, by operating the radiant heating device after the cooling operation or the dehumidifying operation is stopped, as described in the previous embodiment, Waste heat can be ventilated and condensation can be dried. In the fourteenth embodiment, the radiant heat rays are radiated in the front direction of the air conditioner. However, by adopting a form in which part or all of the radiation is reflected and introduced to the wind circuit side of the air conditioner, the radiant heat is obtained. The wind circuit can be more actively dried with the wire.

(Embodiment 15)
In the fifteenth embodiment, the radiant heating device is provided in an air conditioner such as a room air conditioner or a dehumidifier having a clothing drying operation mode (function), and means for detecting the temperature of the radiant part is provided. Conventionally, in a dehumidifier and a heat pump air conditioner, drying of the laundry has been promoted by keeping the entire installation room at a low humidity in the laundry drying mode provided. On the other hand, in the fifteenth embodiment, it is possible to more positively irradiate the laundry that has been dried indoors with heat rays, and promote drying of clothes.

Moreover, since the humidity (water | moisture content) which generate | occur | produced from the clothing is processed as dew condensation water by an air conditioner, the excessive humidity rise does not occur indoors. In addition, by providing the radiation temperature detecting means, it is possible to detect an excessive increase in the temperature of the laundry that is the heat ray radiation surface, thereby preventing an accident. Furthermore, the present invention has an unprecedented unique effect that a remarkable “sunlight” smell can be realized in the laundry as an effect of infrared rays in sunlight that cannot be realized in normal indoor drying.
In the fifteenth embodiment, a dehumidifier or a room air conditioner is described as an example of an air conditioner. However, the same effect can be obtained in other devices, and the object to be dried is a laundry. It is also possible to realize other similar things.

  As described above, the radiant heating device according to the present invention is thin and can be used as a heating device that can take a wide opening portion of a heat ray and keep the energy density of the opening portion low. It is suitable for use as a heating device or a heating device.

It is sectional drawing of the radiation heating apparatus concerning Embodiment 1 of this invention. (A) And (b) is sectional drawing and the front view of the radiation heating apparatus concerning Embodiment 4 of this invention, respectively. It is sectional drawing of the radiation heating apparatus with a drive device concerning Embodiment 5 of this invention. (A) And (b) is sectional drawing and the front view of the radiation heating apparatus which has a drive device concerning Embodiment 6 of this invention, respectively. (A) is a drive circuit diagram of the radiation heating apparatus concerning Embodiment 7 of this invention, (b) is a graph which shows the change characteristic of the output with respect to an applied voltage, and a dominant wavelength. It is an external view of the indoor unit of the air conditioner concerning Embodiment 9 of this invention. It is sectional drawing of the radiation heating apparatus concerning Embodiment 12 of this invention. It is sectional drawing of the indoor unit of the air conditioner which incorporated the radiation heating apparatus concerning Embodiment 13 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Energy discharge | release means, 2 1st reflection means, 3 2nd reflection means, 4 Light-shielding means, 5 Convergence / scattering means

Claims (15)

Energy emitting means for emitting heat rays including at least infrared rays;
Reflecting means for reflecting a part of the heat rays emitted from the energy emitting means;
A converging / diffusing means for converging or diffusing the heat rays emitted from the energy emitting means and the heat rays reflected by the reflecting means;
A radiation heating apparatus, comprising: a light shielding means for attenuating visible light contained in the heat rays emitted from the energy emitting means.   The radiant heating device according to claim 1, wherein the energy releasing means includes a high temperature light emitting means.   The radiation heating apparatus according to claim 1, wherein the energy release means uses ionized gas discharge energy.   The radiation heating apparatus according to claim 1, wherein the energy emitting means uses light emission energy generated by electron excitation in a solid.   The radiation heating apparatus according to claim 1, further comprising a radiation direction control means for driving any of the reflection means, the convergence / diffusion means, or the entire radiation heating apparatus to change the direction of the heat ray radiation.   6. The radiation heating apparatus according to claim 5, wherein the radiation direction control means has at least two refractive lenses, and changes the radiation direction by selectively using the refractive directions of the refractive lenses.   The radiant heating device according to claim 1, further comprising a radiant energy amount varying means capable of changing a radiant energy amount of the energy releasing means. Radiation energy control capable of changing the amount of radiant energy of the energy release means, and radiation direction control for changing the direction of the heat ray radiation by driving any one of the reflection means, the convergence / diffusion means, or the entire radiation heating device. Means and
The radiant heating device according to claim 1, wherein the amount of radiant energy and the direction of heat ray radiation of the energy releasing means are changed independently or in synchronization with each other.   The radiation heating apparatus according to claim 1, further comprising a human body position detecting unit that detects a position of the human body, and selectively performing heat ray radiation on the human body. Comprising a human body position detecting means or a radiation temperature detecting means for detecting the position of the human body,
2. The radiation heating apparatus according to claim 1, wherein the human body position detecting means or the radiation temperature detecting means detects a human body and a temperature in the vicinity thereof, and selects a radiation energy amount and a heat radiation direction from the detected temperature. .   The radiation heating apparatus according to claim 1, further comprising a time-limited operation unit that stops operation after a predetermined operation time has elapsed.   The radiation heating apparatus according to claim 1, further comprising a cooling unit that cools the energy release unit. An air conditioner comprising the radiation heating apparatus according to any one of claims 1 to 12,
An air conditioner that discharges part or all of the heat released from the radiant heating device to a space in which the air conditioner is installed via a wind circuit of the air conditioner. An air conditioner comprising the radiation heating apparatus according to any one of claims 1 to 12,
An air conditioner, wherein the radiant heating device is driven during a cooling operation, a dehumidifying operation, or after each operation stop of the air conditioner. An air conditioner comprising the radiation heating apparatus according to any one of claims 1 to 12,
It has a clothes drying operation mode, and in the clothes drying mode operation, the radiation energy is selectively radiated to the clothes to be dried, and the temperature of the clothes to be dried is detected by the radiation temperature detecting means. Air conditioner.

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