JP4263529B2 - Heating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heating device that radiates infrared rays to an object to be heated, and more particularly to a heating device that is used to dry a painted portion when repairing a local scratch on a painted surface of an automobile or the like. It is.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a paint drying apparatus that is used for repairing local scratches and the like with a paint in an automobile repair shop and the like and drying the paint part after the repair. Examples of the coating / drying apparatus include those using a far infrared heater and those using a near infrared heater. A sheathed heater or the like is used as the far infrared heater, and emits infrared rays having a center wavelength of about 4.0 μm. A halogen heater or the like is used as the near-infrared heater, and emits infrared light having a center wavelength of about 1.2 μm.
[0003]
By the way, the paint drying apparatus using a far infrared heater or a near infrared heater has advantages and disadvantages. For example, a paint drying apparatus using a far-infrared heater has the advantage that there is almost no difference in color with respect to the heat absorption rate for the paint, but the problem is that the drying process takes a long time because a rise time is required until the temperature rises. is there.
[0004]
On the other hand, in a paint drying apparatus using a near-infrared heater, the time to rise until the temperature rises is relatively short, and the drying process time is shorter than the drying process time with a far-infrared heater. There is a problem that there is a difference by color.
[0005]
Therefore, in order to deal with a wide range of applications in auto repair shops, etc., it was necessary to prepare multiple paint drying devices such as a paint drying device using a far infrared heater and a paint drying device using a near infrared heater. An apparatus capable of carrying out both far-infrared and near-infrared rays with a single coating drying apparatus has been proposed.
[0006]
As a conventional paint drying device that uses both infrared and near infrared rays, a coating drying device that can replace the standard infrared lamp with a socket, and a reflection mirror only on the inner side of the near infrared lamp And a far-infrared lamp having a reflection mirror on the inner side and a coating for emitting far-infrared radiation on the inner surface, and a structure in which the near-infrared lamp and the far-infrared lamp can be exchanged with a base. (For example, see cited document 1).
[0007]
[Patent Document 1]
JP-A-8-338688 (page 3-4, FIGS. 1 and 7)
[0008]
[Problems to be solved by the invention]
However, in the conventional paint drying equipment that uses both infrared and near infrared, a plurality of far infrared lamps and near infrared lamps are prepared, and either the near infrared lamp or the far infrared lamp is coated with a base. There is a problem that it takes time and effort because an exchange work such as attaching to or removing from the drying apparatus is required.
[0009]
Further, when one of the far-infrared lamp and the near-infrared lamp is used, there is a problem that a place for always storing the other lamp in another place is required.
[0010]
Therefore, an object of the present invention is to provide a heating device that does not need to store replacement parts and that has a simple configuration and improved work efficiency.
[0011]
[Means for Solving the Problems]
According to the present invention, it includes a heat source that radiates any one of infrared rays of near infrared rays and medium infrared rays to a heating target, and a heating portion main body that holds the heat source. In the heating device in which an opening for radiating the infrared ray generated from the heat source toward the object to be heated is formed, an opening / closing member rotatably attached to the heating unit main body is provided so that the opening can be opened and closed. The opening / closing member includes a first coating layer provided on a first surface facing the heat source in a state where the opening is closed by the opening / closing member, and a state in which the opening is closed by the opening / closing member. A second coating layer provided on a second surface opposite to the first surface, wherein the first coating layer is a coating layer that absorbs the infrared rays, 2 is a coating layer that emits far infrared rays. Heating device is obtained to.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of a heating device according to the present invention will be described. 1 and 2 show a heating device according to the first embodiment.
[0013]
With reference to FIG. 1 and FIG. 2, the heat source 11 which radiates | emits near infrared rays, the box-shaped heating part main body 13 holding the heat source 11, the reflecting plate 15 accommodated in the heating part main body 13, and heating An opening / closing member 17 is rotatably supported on one side of the unit body 13.
[0014]
The heating unit main body 13 is formed with an opening 19 that opens the front surface of the heating unit main body 13 so as to radiate near infrared rays forward from the heat source 11 to the heating target. The reflection plate 15 is provided inside the heating unit main body 13 so as to surround the heat source 11 except for the opening 19 side.
[0015]
The heat source 11 radiates near infrared rays forward from the opening 19 and radiates the object to be heated. Further, near infrared rays radiated from the heat source 11 to other than the front of the heating unit main body 13 are radiated to the object to be heated by being reflected forward by the reflecting plate 15.
[0016]
The position of the opening / closing member 17 shown in FIGS. 1 and 2 indicates a state in which the opening / closing member 17 is opened from the opening 19. FIG. 3 shows an enlarged part of the opening / closing member 17.
[0017]
See also added diagram 3 in FIGS. 1 and 2, the opening and closing member 17 is pivotally attached to one side of the heating body 13 so as to form an opening 19 to be opened and closed.
[0018]
The opening / closing member 17 includes a first coating layer 21 provided on a first surface (see FIG. 3) 17f of the opening / closing member 17 facing the heat source 11 in a state where the opening 19 is closed by the opening / closing member 17. A second coating layer 23 is provided on a second surface (see FIG. 3) 17g which is an outer surface opposite to the first surface 17f in a state where the opening 19 is closed by the opening / closing member 17. ing.
[0019]
The opening / closing member 17 has an engaging portion 31 that holds the opening / closing member 17 in a closed state when the opening 19 is closed by the opening / closing member 17. The opening / closing member 17 is formed in a substantially semicircular shape when viewed from the side surface shown in FIG. 2, and is rotatably attached to one side of the heating portion main body 13 via the plurality of hinge members 25. Yes. The heating section main body 13 has a mating engagement section 33 that engages with the engagement section 31 when the opening 19 is closed by the opening / closing member 17.
[0020]
Further, the heating unit main body 13 includes a lattice-shaped protective member 35 attached in front of the opening 19, a holding unit 37, and a positioning member 39 for holding the heating unit main body 13 at a predetermined position in the vertical direction. have. The heating unit body 13 is held by the holder 41. The holder 41 includes a leg portion 43 and a rod-like support portion 45 that is erected upward from the leg portion 43.
[0021]
The leg portion 43 is a portion that is horizontally installed on the installation surface 51 so that the support portion 45 is erected in the vertical direction. The holding portion 37 is held by the support portion 45 so as to be slidable in the vertical direction. Therefore, the holding part 37 is positioned and fixed by screwing and fixing the positioning member 39 to the support part 45 at a desired position of the support part 45.
[0022]
Further, the heating device will be specifically described. The opening / closing member 17 uses a steel plate. As an example, the open / close member 17 can be manufactured by punching a steel plate with a press and then bending it. When the opening 19 is closed by the opening / closing member 17, the shape of the opening / closing member 17 is convex outward. The opening / closing member 17 is formed in a substantially semicircular shape when viewed from the side surface shown in FIG. 2, but may be a substantially semi-elliptical shape and can efficiently radiate near infrared rays to the heating target. Any shape can be used.
[0023]
The opening / closing member 17 may be a copper plate having good thermal conductivity and easy bending, instead of a steel plate, and a metal plate such as an aluminum plate or a brass plate or an alloy plate such as a stainless steel plate is selected. May be used. As the opening / closing member 17, it is desirable to employ a material having a heat resistant temperature of about 400 ° C to 650 ° C.
[0024]
The first coating layer 21 is a coating film layer provided by coating a coating material as a paint having a high absorption rate for absorbing near infrared rays on the first surface 17f. The second coating layer 23 is a coating film layer provided by coating a coating material as a paint having a high emissivity for radiating far infrared rays on the second surface 17g.
[0025]
By the way, according to Kirchhoff's law, it is clear that the stronger the ability to emit radiation of a predetermined wavelength (emissivity), the stronger the ability to absorb radiation (absorption rate). Further, it is known that the black paint has an emissivity or absorptivity of about 0.9 at a wavelength of 0.6 μm to 0.8 μm .
[0026]
Therefore, specifically, as a coating material that is a paint as the first and second coating layers 21 and 23, for example, black of Tetzol (trade name) manufactured by Nippon Paint Co., Ltd. (model number: MB-600, heat resistant) Temperature 600 ° C.). Further, the coating materials for the first and second coating layers 21 and 23 may be the same material or different materials. Thus, the first coating layer 21 may be made of a coating material having a high absorption rate that absorbs near infrared rays, and the second coating layer 23 may be made of a coating material having a high emissivity that radiates far infrared rays.
[0027]
Furthermore, as the first coating layer 21, a thermal spray film layer provided by spraying a coating material having a high absorption rate that absorbs near infrared rays on the first surface 17f, and an absorption that absorbs near infrared rays on the first surface 17f. A plating film layer provided by plating a coating material having a high rate may be used, and the second coating layer 23 is provided by spraying a coating material having a high emissivity for radiating far-infrared rays on the first surface 17g. Alternatively, a sprayed film layer or a plated film layer provided by plating may be used.
[0028]
Further, when the closing member 21 is steel, the absorptivity to absorb near infrared rays to form a high oxide film layer by applying a four iron oxide treatment on the first surface 17f as the first coating layer 21, As the 2nd coating layer 23, you may form the oxide film layer with a high emissivity which radiates | emits far-infrared rays by performing the iron tetroxide process similar to the 1st surface 17f . By the way, the emissivity is about 0.4 to 0.5 for a steel plate with a rough surface.
[0029]
Further, one of the first and second coating layers 21 and 23 may be provided with any one of a coating film layer, a sprayed film layer, and a plating film layer by a coating material, and the other may be an oxide film layer. As a specific example, the first coating layer 21 is coated using a black heat-resistant coating material having a high absorption rate with respect to infrared rays having a wavelength of about 0.7 μm to 1.5 μm . The second coating layer 23 is subjected to a coating treatment using a material having a high far-infrared emissivity, such as a ceramic coating or a carbon coating, so that far-infrared rays can be easily emitted.
[0030]
Next, the specific example used in order to dry the coating surface which is heating object using the heating apparatus mentioned above is demonstrated.
[0031]
First, the heating unit main body 13 is held in a predetermined position of the support unit 45 by the positioning member 39 after the holding unit 37 is slid in the vertical direction of the support unit 45 in the vertical direction. Normally, as shown in FIGS. 1 and 2, the opening / closing member 17 dries the painted surface with the heat source 11 that emits near infrared rays with the opening 19 of the heating unit main body 13 open.
[0032]
When the painted surface is desired to be dried by far infrared rays, the opening / closing member 17 is rotated around the hinge member 25 so as to cover the opening 19 of the heating unit main body 13, and the engaging portion 31 and the mating engaging portion 33 are engaged. As a result, the opening / closing member 17 is engaged with the heating unit main body 13, and the opening 19 is held closed by the opening / closing member 17. At this time, near infrared rays generated from the heat source 11 are absorbed by the first covering layer 21 provided on the first surface of the opening / closing member 17 to heat the opening / closing member 17. The far-infrared rays are radiated from the second coating layer 23 provided on the second surface to the painted surface to dry the painted surface.
[0033]
4 and 5 show a second embodiment of the heating device. In addition, the same code | symbol is attached | subjected to the same part as 1st Embodiment in the heating apparatus shown in FIG.1 and FIG.2, and description is abbreviate | omitted.
[0034]
4 and 5, in the heating device according to the second embodiment, the two open / close members 17a and 17b have a plurality of hinges on each of the upper and lower sides on the opening 19 side of the heating unit body 13. It is rotatably attached via members 25a and 25b.
[0035]
The two open / close members 17a and 17b have a first surface on the first surface of the open / close members 17a and 17b facing the heat source 11 that emits near infrared rays with the opening 19 closed by the open / close members 17a and 17b. The coating layer 21 is provided. The opening / closing members 17a and 17b are provided with a second coating layer 21 on the second surface which is the outer surface opposite to the first surface in a state where the opening 19 is closed by the opening / closing members 17a and 17b. ing.
[0036]
One of the opening and closing member 17a has an engaging portion 31a for holding the substantially lower half of the opening 19 in the closed jaws. The other closing member 17b has a mating engagement portion 33b which engages with the engaging portion 31a when the substantially half of the upper opening 19 closed.
[0037]
As shown in FIGS. 4 and 5, the open / close members 17 a and 17 b dry the painted surface by the heat source 11 at a position where the opening 19 of the heating unit main body 13 is opened. When the painted surface is desired to be dried by far infrared rays, the hinge members 25a and 25b are rotated around the hinge members 25a and 25b so as to cover the opening 19 of the heating unit main body 13 by the two opening and closing members 17a and 17b. Then, by engaging the mating engagement portion 33b with the engagement portion 31a, the two opening / closing members 17a, 17b are engaged with each other, and the opening 19 is installed and held closed by the opening / closing members 17a, 17b. To do. At this time, near infrared rays generated from the heat source 11 are absorbed by the first covering layer 21 provided on the first surface 17f of the opening / closing members 17a, 17b, and heat the opening / closing members 17a, 17b. The far-infrared rays are radiated from the second coating layer 23 provided on the second surface 17g of the members 17a and 17b to the painted surface to dry the painted surface.
[0038]
6 and 7 show a third embodiment of the heating device. In addition, the same code | symbol is attached | subjected to the same part as 2nd Embodiment in the heating apparatus shown in FIG.4 and FIG.5, and description is abbreviate | omitted.
[0039]
Referring to FIGS. 6 and 7, the heating device in the third exemplary embodiment, two heating body 131 is supported by the support portion 45 at predetermined intervals in two stages in the vertical direction. Each of the heating unit main bodies 131 at each stage is formed with two openings 19, and the heat sources 11 that radiate near infrared rays are provided to the respective openings 19 on a one-to-one basis. Each of 11 is arranged in a line in the horizontal direction. One opening / closing member 17a composed of two sheets is rotatably attached to one side near the lower side of the opening 19 of the heating unit main body 131 of each stage via a hinge 25a. Further, the other opening / closing member 17b composed of two sheets is rotatably attached to one side in the vicinity of the upper side of the opening 19 of the heating unit main body 131 of each stage via a hinge part 25b.
[0040]
As shown in FIG. 3, the four open / close members 17a and 17b have first surfaces of the open / close members 17a and 17b facing the heat source 11 with the opening 19 closed by the open / close members 17a and 17b. A first coating layer 21 is provided on 17f. Further, the opening / closing members 17a and 17b have the second covering layer 23 on the second surface 17g which is the outer surface opposite to the first surface 17f with the opening 19 closed by the opening and closing members 17a and 17b. Is provided.
[0041]
One of the two opening / closing members 17a attached near the lower side of the opening 19 of the heating unit main body 131 closed the opening / closing member 17a when the lower half of the opening 19 was closed by the opening / closing member 17a. It has the engaging part 31a for hold | maintaining in a state. The other two opening / closing members 17b attached in the vicinity of the upper side of the opening 19 of the heating unit main body 131 engage with the engaging portion 31a when the upper half of the opening 19 is closed by the opening / closing member 17b . It has a mating engagement portion 33b.
[0042]
At normal times, the four open / close members 17a and 17b dry the painted surface by the heat source 11 with the opening 19 of the heating section main body 131 open as shown in FIGS. Further, when it is desired to dry the painted surface by far infrared rays, the four opening / closing members 17a and 17b are rotated around the hinge members 25a and 25b so as to cover the opening 19 of the heating unit main body 131, and the engaging portion 31a. The four opening / closing members 17a, 17b are engaged with each other by engaging the mating engagement portion 33b, and the opening 19 is installed and held closed by the opening / closing members 17a, 17b. At this time, the near infrared rays generated from the heat source 11 are absorbed by the first covering layer 21 provided on the first surfaces of the opening / closing members 17a, 17b and warm the opening / closing members 17a, 17b. , 17b, far-infrared rays are emitted from the second coating layer 23 provided on the second surface to the painted surface to dry the painted surface.
[0043]
When one heating unit main body 131 is used for near infrared rays and the other heating unit main body 131 is used for far infrared rays, opening / closing members 17a and 17b attached to one heating unit main body 131 are openings. 19 is opened and the painted surface is dried by the heat source 11, and the opening 19 is closed by the open / close members 17a and 17b attached to the other heating unit main body 131 so that far infrared rays are applied to the painted surface. So that it will dry out. As described above, since the heat source 11 is arranged in the matrix direction, the open / close members 17a and 17b are appropriately operated and radiated to the painted surface according to the near-infrared or far-infrared radiation conditions on the painted surface.
[0044]
In each of the above-described embodiments, the heat source 11 that radiates near infrared rays is used as the infrared radiant heat source. However, instead of the heat source 11 that radiates near infrared rays as the infrared radiant heat source, the center wavelength is about 1. A halogen heater that emits infrared light of 2 μm or a mid-infrared lamp that emits infrared light having a center wavelength of about 2.5 μm may be employed.
[0045]
Further, the support unit 45 of the support tool 41 supports the heating unit main body 13 in the first embodiment in a plurality of stages, and a plurality of infrared radiation heat sources are provided in the matrix direction as in the third embodiment. It can be constituted as follows.
[0046]
In the first embodiment, a configuration in which one opening 19 is opened / closed by one opening / closing member 17 is shown. In the second and third embodiments, two openings 19 are formed. Although the structure which opens and closes by these opening-and-closing members 17a and 17b was shown, the structure which opens and closes the some opening part 19 by one sheet of opening-and-closing member may be sufficient.
[0047]
Further, the number and arrangement of the opening / closing members 17, 17a, 17b are not limited to those of the first to third embodiments, and are appropriately attached to the heating unit main bodies 13, 131 according to the purpose of using near infrared rays or far infrared rays. It goes without saying that it can be done.
[0048]
【The invention's effect】
As described above, according to each embodiment, according to the heating device of the present invention, the first covering layer having a high infrared absorption rate provided on the first surface of the opening / closing member facing the heat source , And a second coating layer, which is a material having a high far-infrared emissivity, provided on the second surface of the opening / closing member, and normally radiates near-infrared or mid-infrared rays to the object to be heated and further heats the far-infrared rays When it is desired to radiate to the target, the opening is covered with an opening / closing member so that far infrared rays are radiated to the object to be heated. it can be changed to any of the use of the use or medium for infrared and far infrared can improve the working efficiency.
[0049]
Further, according to the heating device according to the present invention does not require the trouble of exchanging the near-infrared lamp and a far infrared lamp depending on the intended use as in the prior art, for storing the one of the near-infrared lamp and a far infrared lamp The storage place can be made unnecessary.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of a heating apparatus according to the present invention.
FIG. 2 is a side view of the heating device shown in FIG.
3 is an enlarged cross-sectional view showing a main part of the opening / closing member shown in FIG. 2. FIG.
FIG. 4 is a front view showing a second embodiment of the heating device according to the present invention.
FIG. 5 is a side view of the heating device shown in FIG. 3;
FIG. 6 is a front view showing a third embodiment of the heating device according to the present invention.
7 is a side view of the heating device shown in FIG. 6. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Heat source 13,131 Heating part main body 15 Reflector 17,17a, 17b Opening / closing member 17f 1st surface 17g 2nd surface 19 Opening part 21 1st coating layer 23 2nd coating layer 25 , 25a, 25b Hinge member 31 , 31 a engaging portion 33 , 33 b mating engaging portion 41 holder

Claims (5)

A heat source that emits one of infrared rays of near-infrared rays and mid-infrared rays to the object to be heated, and a heating unit body that holds the heat source, and the infrared rays generated from the heat source on the front surface of the heating unit body In the heating apparatus in which an opening that radiates the heating target is formed, the opening includes an opening / closing member that is pivotally attached to the heating unit main body so that the opening can be opened and closed. A first coating layer provided on a first surface facing the heat source in a state where the opening is closed by the opening and closing member; and the first surface in a state where the opening is closed by the opening and closing member. Has a second coating layer provided on the second surface that is the opposite surface, the first coating layer is a coating layer that absorbs the infrared rays, and the second coating layer is: A heating device characterized by being a coating layer that radiates far infrared rays 2. The heating device according to claim 1, wherein the opening and closing member is rotatably attached via a hinge member so as to cover the opening of the heating unit main body, and the heating unit main body closes the opening and closing member. A mating engagement portion for maintaining the state, and the opening / closing member has an engagement portion that engages with the mating engagement portion when the opening is closed by the opening / closing member. apparatus. 2. The heating device according to claim 1, further comprising: at least two opening / closing members that cover the opening , and the opening / closing member that covers the opening of the heating unit main body by the opening / closing member. Each of which is pivotably attached via a plurality of hinge members, and when the opening and closing member closes the opening, the opening and closing of one of the openings is held by the opening and closing member. A heating apparatus comprising: an engaging portion provided on a member; and a mating engaging portion provided on the other opening / closing member so as to engage with the engaging portion in a state where the opening is closed . 4. The heating device according to claim 1, wherein a plurality of the openings are formed in the heating unit main body, and the heat source is provided in each of the plurality of openings. 5. A heating device characterized by that. 5. The heating device according to claim 1, wherein the opening and closing member is one of a metal plate and an alloy plate, and the first and second coating layers are coated. Any of the coating film layer provided by coating the material, the oxide film layer formed by oxidation treatment, the thermal spray film layer formed by spraying the coating material, and the plating film layer formed by plating treatment A heating device characterized by being a kind .

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