JP2003235437A - Oven unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oven unit capable of uniformly radiating heat all over processed materials so as not cause unevenness in roasting, by improving a heat reserving ratio and radiation efficiency of reflecting members. <P>SOLUTION: In this oven unit, reflection mechanism 10 is so structured that each of the reflecting members 17 attached to outsides of support rods 16 is formed out of a pipe material having higher thermal conductivity and higher thermal diffusivity, when compared with the support rod 16, for the purpose of giving high heat reserving properties and high radiation efficiency to the reflecting member, and heat reserving pipe materials 18 which have a lower specific heat, higher thermal conductivity, and higher thermal diffusivity, when compared with those of the pipe material for the reflecting member, are each inserted into each of inner spaces of the reflecting members 17. Roasting evenness controlling mechanisms each composed of a swinging-type mechanism, rotary-type mechanism, etc., are each positioned on upper heat sources 3 facing the reflecting members 17, so that radiation regions of the upper heat sources 3 are arbitrarily selected. Convection heat control mechanisms each having an adjustable partition structure which is openable, closable, and movable are mounted on both the right and left sides of a heat plate 2, so that heat power given by convection from a lower heat source 4 is finely controlled. A heat source cooling mechanism is installed, so that air is fed from the outside to the inside of an oven 1 through air inlets positioned on the rear side, or on the right and left sides, of the oven 1, and therefore back areas of the upper and lower heat sources are cooled by natural convection. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a fixed type or tunnel type gas / electric oven used in baking and baking of confectionery, bakery, pizza, etc., and particularly far-infrared infrared rays generated from a heat source. Irradiate evenly on the work material such as dough material on the hot plate to prevent uneven baking, reduce the amount of water evaporation and obtain good baking color on the surface, internal flexibility, etc. The present invention relates to an oven device that can be easily maintained.

[0002]

2. Description of the Related Art Conventionally, a gas oven apparatus has been generally used for cooking and baking confectionery, bread, pizza and the like. For example, JP-A-12-1 proposed by the present applicant.
As disclosed in Japanese Patent No. 16305, a reflection mechanism in which far-infrared rays generated from an upper heat source such as far-infrared ray schwank burners arranged on the left and right above a heating plate in an oven kiln are arranged on an inner surface of a ceiling in the oven kiln. By irradiating the workpiece on the hot plate by reflecting with, and simultaneously heating the workpiece on the hot plate by the lower heat source arranged under the hot plate at the same time,
Workpieces such as pizza, bread, castella, and gratin on a hot plate are heat-treated. This reflecting member is formed of, for example, an aluminum pipe material, and is inserted and supported by a supporting rod portion that is bridged between supporting members arranged in front of and behind the oven kiln. By supporting it, it has a double tubular structure. Further, in order to be able to select the presence / absence of reflection on the work piece, the adjustment of the reflectance, the reflection mode, etc., for example, when the reflection is too strong, or when setting a part that does not need reflection, a reflection member In order to properly select the arrangement form of the reflecting member such as not dismounting itself and arranging it, or to reduce the reflectance of the reflecting member, the outer surface of the reflecting member itself is processed into a mirror-finished state, and conversely In order to increase the reflectance, the outer surface of the reflecting member itself is processed into a roughened surface.

[0003]

However, in the conventional oven device as described above, upon reflection by the reflection mechanism, the upper heat source itself is a fixed type whose position and direction cannot be changed, and the reflection by the upper heat source is not possible. Since it is not possible to arbitrarily change the irradiation area to the member, it is relatively difficult to finely adjust the baking unevenness by uniformly irradiating the whole workpiece. Moreover, conventionally, the presence or absence of reflection on the work piece, the adjustment of the reflectance,
In order to be able to select the reflection mode, etc., for example, when the reflection is too strong, or when setting a site that does not require reflection, the reflection member itself should not be removed and arranged. The outer surface of the reflection member itself is processed into a mirror-finished state when it is selected appropriately or the reflectance of the reflection member is reduced, and conversely when the reflectance is increased, the outer surface of the reflection member itself is processed. It took a lot of time and labor, such as processing the roughened surface to a rough surface, and took troublesome measures.

Further, the conventional reflecting member is formed of, for example, an aluminum pipe material, and is inserted into and supported by a supporting rod material portion which is provided between supporting members arranged in front and rear of the oven kiln. Since the reflecting member is supported as the core member to form a double tube, both the heat storage rate and the radiation efficiency of the reflecting member are low.

Further, conventionally, since the convective heat due to the radiation from the lower heat source cannot be well adjusted, only the lower part of the hot plate becomes extremely hot, which causes only the lower surface of the workpiece on the hot plate to be extremely scorched. There was a problem such as being lost.

In addition, since there is no cooling system behind the upper heat source in the past, the back side of the upper heat source often remains in a high temperature state, and as a result,
There is a possibility that the life of the upper heat source, for example, the heater portion itself may be extremely shortened.

Therefore, the present invention was created in view of the above existing circumstances, and the position and direction of the upper heat source can be arbitrarily adjusted in order to arbitrarily change the irradiation area of the reflecting member by the upper heat source. By making it adjustable, it is possible to irradiate evenly on all objects to be processed without unevenness of heating, and it is possible to improve the heat storage rate / radiation efficiency of the reflecting member, and to make it possible to apply to all objects to be processed. Can be efficiently radiated, and convective heat due to radiation from the lower heat source can be adjusted to prevent an extremely high temperature condition only under the hot plate. It is possible to avoid locally burning only the lower surface of the workpiece, and by placing a cooling system that uses natural convection behind the upper heat source to cool the backside of the upper heat source. Upper part And to provide an oven apparatus that can be extended source life.

[0008]

In order to achieve the above-mentioned object, according to the present invention, an upper part facing upward with respect to a workpiece W placed on a hot plate 2 in an oven kiln 1. The near-infrared rays from the heat source 3 are diffusely reflected by the reflection mechanism 10 and diffused and radiated onto the heat plate 2 to perform heat treatment.
In the oven device for heating the hot plate 2 itself by the lower heat source 4 arranged below, the reflection mechanism 10 is supported along the front and rear of the oven kiln 1 by the support members 11 symmetrically arranged in the front and rear of the oven kiln 1. Support bar 16
And a reflecting member 17 supported by being inserted into the outer side of the supporting rod member 16. The reflecting member 17 has a high heat storage property.
In order to provide high radiation efficiency, it is formed of a pipe material having a good thermal conductivity and a large thermal diffusivity as compared with the support rod material 16, and the inner peripheral surface thereof has a smaller specific heat and a lower thermal conductivity than the pipe material. A heat storage pipe material 18 having a thermal diffusivity higher than that of the pipe material is inserted. The infrared rays from the upper heat source 3 directed upward with respect to the workpiece W placed on the hot plate 2 in the oven kiln 1 are diffusely reflected by the reflection mechanism 10 and diffusely radiated onto the hot plate 2 for heating. In the oven apparatus that performs the treatment and heats the heating plate 2 itself by the lower heat source 4 arranged below the heating plate 2, the upper heat source 3 is set to arbitrarily select the irradiation area of the upper heat source 3 with respect to the reflection member 17 of the reflection mechanism 10. Can be provided with unevenness adjusting mechanisms 20 and 30 by a sliding mechanism or a rotating mechanism. The grilling unevenness adjusting mechanism 20 using a sliding mechanism is mounted and fixed on the upper end of a partition wall portion 21 which is vertically arranged with a gap having a required width between the inner wall of the oven kiln 1 and the edge of the hot plate 2. The fixed base 22 and the slide plate 23 that is fixedly arranged in a state where the plurality of upper heat sources 3 are spaced apart from each other and is slidable back and forth on the fixed base 22 can be provided. The baking unevenness adjusting mechanism 30 by the rotating mechanism has hinges 33 on the upper ends of the left and right partition wall portions 31 which are vertically arranged with a gap having a required width between the inner wall of the oven kiln 1 and the edge portion of the hot plate 2. A rotation base 32 that is rotatably attached via a pin and is fixed in a state in which a plurality of upper heat sources 3 are separately arranged on one side piece.
In order to reflect the radiant heat diffused and radiated from the reflecting member 17 to the inside, a plurality of them are connected and arranged between the edge portion on one side piece of the rotating base 32 and the ceiling portion inside the oven kiln 1 in a state of being adjacent to each other. A flexible partition plate 36, a rack gear 38 that is fixed by screws inside the right edge of the rotary base 32 so that the teeth face outward, and a pinion gear 39A that meshes with the teeth of the rack gear 38. The drive motor 39 that it has, the projection piece 32A that extends to the edge portion on the other side piece of the rotation base 32, and the projection piece 3 as the rotation base 32 rotates.
The upper limit, which is arranged on the movement locus of the projection piece 32A, controls the stop of the drive motor 39 by the contact of the 2A.
Both lower limit switches LS1 and LS2 may be provided. The infrared rays from the upper heat source 3 directed upward with respect to the workpiece W placed on the hot plate 2 in the oven kiln 1 are diffusely reflected by the reflection mechanism 10 and diffusely radiated onto the hot plate 2 for heating. In the oven device that performs the treatment and heats the heating plate 2 itself by the lower heat source 4 arranged below the heating plate 2, the left and right sides of the heating plate 2 can be opened and closed to finely adjust the thermal power due to convection from the lower heat source 4. A convection heat adjusting mechanism 40 having a partition adjusting plate structure may be provided. The convection heat adjustment mechanism 40 is a fixed base on which the upper heat source 3 is placed and fixed at an upper position with a gap of a required width between the inner wall of the oven kiln 1 and the edge of the hot plate 2. Left and right partition wall portions 41 formed by mounting and disposing 42, and the partition wall portion 41
By forming a gap between the edge of the heat plate 2 located inside and the support frame 43 which is arranged upright, the upper heat source 3 is opposed to the lower heat source 4 that directly heats the heat plate 2 from below. The radiant heat flow path of the lower heat source 4 is formed by this gap in order to guide the radiant heat to the upper side of the hot plate 2 after passing, so that the radiant heat does not become excessive from the upper heat source 3 toward the workpiece W side on the hot plate 2. In order to shield the radiant heat, a horizontal hanging plate 46 that can be erected at an arbitrary height at the upper end of the support frame 43 provided to face the upper heat source 3 installation side, and the radiant heat flux from the lower heat source 4 In order to improve heat transfer to the workpiece W side on the heat plate 2 by convection with the radiant heat flux of the heat source 3 in the horizontal direction via the adjustment screw 44 on the upper end side of the support frame 43. From the adjustment plate 45 that can be movably fixed It can be formed. Oven kiln 1
The far-infrared rays from the upper heat source 3 directed upward with respect to the workpiece W placed on the inner heat plate 2 are diffusely reflected by the reflection mechanism 10 and diffused and radiated on the heat plate 2 to perform the heat treatment. In the oven device for heating the hot plate 2 itself by the lower heat source 4 arranged below the hot plate 2, the oven kiln 1
The heat source cooling mechanism 50 may be provided to send the outside air into the oven kiln 1 from the air supply port provided on the rear side surface or the left and right side surfaces to cool the back side portions of the upper and lower heat sources 3 and 4 by natural convection. The heat source cooling mechanism 50 includes a bottom surface portion 53 inside the oven kiln 1 having an intake opening portion 53A for taking in outside air, a side wall portion 54 having a heat insulating material 54A attached inside and a side surface air supply port 54C, Side wall 54
And a partition wall portion 51 having a gap of a required width and placed inside the oven kiln 1 in the form of a partition so as to stand upright, and a partition wall portion 5.
A fixed base 52 on which the upper heat source 3 is spaced from the fixed base 52, which is mounted and fixed on the upper end of the oven kiln 1 so as to be slightly inclined toward the inside of the oven kiln 1, and directly above the outer edge of the fixed base 52. An oven comprising a ceiling-side vertical duct portion 55B formed by adjoining a plurality of holes 55A arranged toward each other, and a substantially trapezoidal hollow exhaust port 55C communicating with the ceiling-side vertical duct portion 55B. For cooling formed by a ceiling 55 inside the kiln 1, a front wall 56 having an operation panel 56A of the oven 1 and a back wall 57 having a back air supply port 57A for taking in outside air. It can be configured by including the heat exchange chamber P. As the upper and lower heat sources 3 and 4, a heat source member such as a ceramic heater, an infrared Schwank burner, or a gas burner can be adopted.

In the oven apparatus according to the present invention having the above-described structure, the pipe material having a larger thermal conductivity and a larger thermal diffusivity than the supporting rod 16 is formed, and the inner peripheral surface thereof has a specific heat capacity. Is smaller than the pipe material and has a thermal conductivity
Heat storage pipe material 18 having a larger thermal diffusivity than the pipe material 18
The reflection member 17 formed by penetrating the above-mentioned material imparts high heat storage property and high radiation efficiency to the reflection member 17 that reflects the radiation from the upper heat source 3, and with respect to all the workpieces W on the hot plate 2. Improving the efficiency of irradiation heating by all the radiation. The grilling unevenness adjusting mechanism 20 using the sliding mechanism fixes the sliding plate 23 to the fixed base 2
By sliding it back and forth on the heating plate 2, the irradiation area of the reflecting member 17 by the upper heat source 3 can be arbitrarily changed, so that uneven baking of the workpiece W on the heating plate 2 can be prevented.
The roaming unevenness adjusting mechanism 30 using the rotating mechanism is the drive motor 3
The rotation base 32 is rotated by operating 9 so that the irradiation area of the upper heat source 3 with respect to the reflection member 17 of the reflection mechanism 10 can be selected. At this time, the rotation base 32
When the rotating position is such that the
2A stops the operation by the drive motor 39 by coming into contact with the contact spring of the lower limit switch LS2. On the other hand, the rotation base 32 has, for example, rotation angles of about 90 ° and 45 °.
When it is rotated so as to be in the maximum inclination state between and, the projection piece 32A comes into contact with the contact spring of the upper limit switch LS1 to stop the operation by the drive motor 39. This makes it possible to prevent an excessive amount of rotation of the rotary base 32, and to make it possible to finely adjust the baking unevenness of the workpiece W, which is various types of material materials and the like arranged on the hot plate 2. The convection heat adjusting mechanism 40 having the partition adjusting plate structure adjusts the heating power due to the convection of the lower heat source 4, and when the heating power is weakened, the adjusting plate 45A is rotated by pushing the adjusting screw 44 in the pushing direction so that the adjustment plate 45A is supported at the upper end of the support frame 43. It is moved in the direction of closing the radiant heat flow path of the lower heat source 4 on the side close to the partition wall portion 41 side. On the other hand, if you want to increase the firepower, adjust screw 44
The adjustment plate 45 is separated from the partition wall portion 41 on the upper end side of the support frame 43 by the twist rotation of the lower heat source 4
The radiant heat flow path is moved in the direction of expansion. Further, the horizontal hanging plate 46 capable of shielding the upper heat source 3 by appropriately changing the erection height with respect to the support frame 43 radiates heat from the upper heat source 3 toward the workpiece W side on the hot plate 2. Prevent the excessive arrival of. As described above, by closing or expanding the radiant heat flow path by the adjusting plate 45, changing the erection height of the horizontal plate 46, and the like, the radiant heat to the workpiece W to be fired can be evenly distributed. The work W is prevented from being burnt, and the convective heat transfer caused by the confluence of the radiant heat fluxes from the upper and lower heat sources 3 and 4 makes the inside of the oven kiln 1 a convective heat transfer system according to the firing conditions. Prevents uneven baking of the work W. In the heat source cooling mechanism 50, outside air is taken into the cooling heat exchange chamber P inside the oven kiln 1 from the side surface air supply port 54A of the side wall portion 54 through the intake opening portion 53A of the bottom surface portion 53. At the same time, outside air is also taken into the cooling heat exchange chamber P inside the oven kiln 1 from the rear surface air supply port 57A of the rear wall portion 57. The outside air taken into the cooling heat exchange chamber P cools the lower surface side portion of the upper heat source 3, and then the heated outside air rises while passing through the ceiling side vertical duct portion 55B of the ceiling portion 55 and the exhaust port 55C. Exhausted to the outside. In this way, the cooling system utilizing the principle of natural convection prevents the life of the upper heat source 3 from being shortened due to the high temperature. The upper and lower heat sources 3 and 4, which employ heat source members such as a ceramic heater and an infrared schwann burner, diffusely irradiate the near-infrared rays from the upper heat source 3 by the reflection mechanism 10 and diffusely radiate them on the heat plate 2 to perform heat treatment. Further, the heat storage effect of heating the heating plate 2 itself from below by the far-infrared rays from the lower heat source 4 is enhanced, and an oven device that is easy to maintain is provided.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the drawings is a heat insulating oven kiln formed in a substantially closed structure, for example, attached to the front surface. Is opened and closed by an opening / closing door 61 (not shown), and a pizza is placed on the hot plate 2 of, for example, asbestos, which is arranged at the bottom.
Workpieces W, which are various types of dough materials to be cooked and baked, such as bread, castella, and gratin, are placed (see FIG. 14). On the left and right sides of the oven kiln 1, there are arranged upper heat sources 3 provided with, for example, an unevenness adjusting mechanism 20, 30 such as a sliding mechanism or a rotating mechanism, which will be described later. The heating plate 2 itself is heated by the lower heat source 4 arranged at. still,
As the upper and lower heat sources 3 and 4, for example, a heat source member such as a ceramic heater, an infrared Schwank burner, or a gas burner can be adopted.

By these upper and lower heat sources 3 and 4, the inside of the oven kiln 1 has a temperature of about 300 ° C., for example, in the case of pizza, at a high temperature of about 400 ° C. in a short time of about 5 to 10 minutes, bread or the like. In the case of baked confectionery, it is heated at a medium temperature of about 200 ° C. for a long time such as about 10 to 40 minutes. In particular, when the upper heat source 3 is used for heating, the workpiece W on the hot plate 2 is irradiated with a predetermined near-infrared ray by a reflecting mechanism 10 having a high heat storage property and a high emissivity, which is arranged above the oven kiln 1 and is heated. Further, by providing an openable hole for heat removal in the ceiling in the oven kiln 1, convection is generated in the oven kiln 1 to form a predetermined heating atmosphere.

Further, a convection heat adjusting mechanism 40 having a partition adjusting plate structure which can be opened / closed for finely adjusting the heat generated by convection from the lower heat source 4 is provided on both right and left sides of the heating plate 2, and upper and lower heat sources 3, 4 are provided. In order to extend the life of the oven kiln, the outside air is sent into the oven kiln 1 from the air supply port provided on the rear side or left and right sides of the oven kiln 1 to cool the back side of the upper and lower heat sources 3 and 4 by natural convection. Heat source cooling mechanism 5
It has 0.

(Reflecting Mechanism 10) A specific structure of the reflecting mechanism 10 in the oven apparatus according to the present invention will be described below with reference to FIGS. 1 to 4. The reflection mechanism 10 diffuses the radiant heat from the near-infrared rays from the upper heat source 3 by its outer surface, diffuses and radiates it onto the hot plate 2 like a shower, and removes the material of the workpiece W that is placed on the hot plate 2. The heat treatment is performed by baking with a heat that wraps around. That is, in the reflection mechanism 10, a plurality of attachment portions 15 are arranged, and the support member 11 is formed symmetrically in the front and rear sides of the inner surface of the oven kiln 1, for example.
And a small-diameter pipe-shaped support rod 16 made of, for example, a stainless steel core rod supported along the front and rear of the oven kiln 1 by the front and rear mounting portions 15, and supported by being inserted outside the support rod 16. And a large-diameter pipe-shaped reflecting member 17 (see FIGS. 3 and 4).

The supporting member 11 is positioned in the upper part or in the vicinity of the oven kiln 1 for mounting and supporting the reflecting member 17 and fixedly arranged by, for example, screwing or welding. In the illustrated example, the oven kiln is shown. The central part of the upper part of 1,
It is divided into left and right side parts.
As shown in FIG. 3, the support member 11 itself has a connecting piece 13 formed into a substantially horizontal shape by bending at a lower edge of a fixing piece 12 that is fixedly contacted to the inner side surfaces of the front and rear side walls of the oven kiln 1 by screwing or the like. In addition, a mounting support piece 14 substantially parallel to the fixing piece 12 is further bent to form a groove shape in cross section, and the mounting support piece 14 has a groove-like or hole-like shape opened at its upper edge. A plurality of mounting portions 15 are formed in an array, and a supporting rod 16 is formed.
Are supported so as to be bridged between the support members 11 by fitting into the mounting portions 15.

As shown in FIG. 4, since the reflecting member 17 enhances heat storage and increases radiation efficiency, the reflecting member 17 has a larger diameter than that of the supporting rod 16, for example, made of aluminum and has good thermal conductivity and thermal diffusion. It is formed of a pipe material having a large heat dissipation rate, and a heat storage pipe material 18 made of, for example, copper, which has a specific heat smaller than that of aluminum and a thermal conductivity and a thermal diffusivity of which are both larger than that of aluminum, is inserted into the inner peripheral surface thereof. There is. Then, the reflecting member 17 is inserted and supported by the supporting rod member 16 portion which is laid between the supporting members 11 in front of and behind the oven kiln 1.
By supporting the reflecting member 17 with 6 as the core material, the insertion and supporting state thereof becomes, for example, a double tubular shape.
It should be noted that the reflecting member 17 cannot obtain its reflecting action unless it is arranged without being supported by the supporting rod member 16, so that, for example, a portion where reflection is too strong, or where reflection is unnecessary is set. In such a case, the reflection member 17 itself is not arranged so that the presence or absence of reflection corresponding to the workpiece W, the adjustment of the reflectance, the reflection mode, etc. can be selected.

Next, in order to explain an example of use and operation of the embodiment configured as described above, as shown in FIG. 1, pizza, bread, etc. to be cooked and baked on the heating plate 2 are to be covered. While placing the workpiece W, the arrangement form of the reflecting members 17 is appropriately selected depending on the presence / absence of reflection corresponding to the workpiece W, the magnitude of reflectance, and the like. That is, usually, the support rods 16 are mounted and supported between the support members 11 arranged in front of and behind the oven kiln 1, and the reflection member 17 is provided for a portion where reflection is necessary.
Is inserted and supported. When the upper heat source 3 heats the far-infrared rays, the far-infrared rays generated by the upper heat source 3 are reflected by the respective reflecting members 17 of the reflecting mechanism 10 and are applied to the workpiece W on the heat plate 2. At this time, the far-infrared rays from the upper heat source 3 are scattered without being concentrated in a specific area by the outer surface of the reflecting member 17 having a high heat storage property and a high radiation efficiency, and the whole is substantially uniformly irradiated on the heating plate 2. Further, the irradiation is performed not only from the direction directly above the workpiece W but also from the side direction. Moreover, even if the heat of the reflection member 17 escapes to the outside when the door of the oven kiln 1 is opened, the heat storage pipe material 18 made of copper or the like for the reflection member 17
The inside of the oven kiln 1 can be heated by the residual heat from.

(Baking unevenness adjusting mechanism 20 using a sliding mechanism)
Hereinafter, a specific configuration of the baking unevenness adjusting mechanism 20 including a sliding mechanism for horizontally sliding the left and right upper heat sources 3 in the oven device according to the present invention will be described with reference to FIG. That is, the sliding mechanism of the upper heat sources 3 arranged on the left and right inside the oven kiln 1 was erected with a gap of a required width between the inner wall of the oven kiln 1 and the edge of the heating plate 2. The strip-shaped sliding plate 23 is supported on the left and right partition wall portions 21, respectively, and the strip-shaped sliding plate 23 is mounted on the slightly slanted angle strip-shaped fixed base 22 mounted and fixed to the upper end of the partition wall portion 21. It is arranged to be slidable back and forth along the direction. Then, on the upper surface of the sliding plate 23, for example, four ceramic heaters serving as a plurality of rectangular upper heat sources 3 are arranged in the longitudinal direction with a distance from each other so as to be fixed.
It is fixed by 4. Further, in order to show the amount of movement of the sliding plate 23, a scale pointer 23A is provided on one end side of the sliding plate 23.
In addition, the fixed base 22 is provided with a scale 22A for scale indicated by a pointer 23A.

A specific example of this sliding mechanism is, for example, a plurality of screw holes 25 which are spaced apart from each other on the left and right sides of the fixed base 22 with a predetermined length and are spaced from each other. A plurality of elongated holes 26 formed at predetermined intervals on both the left and right sides of the
The fixing screw 27 inserted in the
The sliding plate 23 is slidably fixed by being screwed into. As a result, the sliding plate 23 can be slid back and forth on the fixed base 22 by a stroke distance corresponding to the length of the long hole 26, for example, by manual operation or operation by a drive source (not shown). The irradiation area of the upper heat source 3 with respect to the reflection member 17 is arbitrarily selected. In the present embodiment, a ceramic heater is used as the upper heat source 3 arranged on the upper surface of the sliding plate 23, but the present invention is not limited to this, and a heat source member such as an infrared Schbank burner or a gas burner may be used. Of course good things.

Next, to explain an example of use and operation of the embodiment configured as described above, as shown in FIG. 5, the fixed base 22 is manually operated or operated by a drive source (not shown). The irradiation area of the upper heat source 3 with respect to the reflection member 17 of the reflection mechanism 10 is selected in advance by sliding the sliding plate 23 back and forth. At this time, the moving amount of the sliding plate 23 is determined by the pointer 23 for the scale of the sliding plate 23.
It can be easily set by adjusting A to the scale 22A for scale of the fixed base 22. As a result, the workpieces W, which are various kinds of cloth materials and the like, arranged on the hot plate 2
On the other hand, it is possible to finely adjust the unevenness of baking.

(Baking unevenness adjusting mechanism 30 using a rotating mechanism)
The reflection mechanism 10 in the oven device according to the present invention will be described below.
Upper heat source 3 directed to each of the reflective members 17 of
A specific configuration of the baking unevenness adjusting mechanism 30 using a rotating mechanism for changing the irradiation angle of will be described with reference to FIGS. 6 and 7. That is, the rotating mechanism of the upper heat source 3 arranged on the left and right inside the oven kiln 1 is the inner wall of the oven kiln 1,
It is supported by the left and right partition wall portions 31 which are arranged upright with a gap having a required width between them and the edge of the heat plate 2. On the upper end of the partition wall portion 31, the outside of the right-angled edge of a so-called angle-shaped rotary base 32 in which a strip is bent at a right angle along the longitudinal direction is pivotally mounted via a hinge 33 so as to be rotatable. On one side of the rotary base 32, for example, four ceramic heaters as a plurality of rectangular upper heat sources 3 are fixed by fixing fittings 34 in a state of being spaced apart in the longitudinal direction.

One end of a pair of left and right flexible members, for example, a plate link-shaped chain member 35 is connected to the edge portion on one side of the rotary base 32, and the other ends of both chain members 35 are connected. A plurality of laterally long partition plates 36 for reflecting the radiant heat diffused and radiated from the reflecting member 17 to the inside are connected to the ceiling portion inside the oven kiln 1 located immediately above the rotary base 32, and the left and right chains are The members 35 are mounted and arranged in order from the lower side to the upper side so as to straddle the member 35.

An arcuate rack gear 38 is screwed to the inside of the right-angled edge portion of the rotary base 32 via a fan-shaped flange portion 37 formed at one end of the right or left side of the rotary base 32 so that the tooth portions face outward. The tooth portion of the rack gear 38 is meshed with the pinion gear 39A fixed to the output shaft of the drive motor 39 arranged below the rotary base 32. Also the rotating base 3
A projection piece 32A is extended at an edge portion on the other side piece of 2, and both upper and lower limit switches LS1 and LS arranged on the movement locus of the projection piece 32A accompanying the rotation of the rotation base 32.
The drive motor 39 by contacting each of the two contact springs
The operation by is stopped. That is, when the rotation base 32 is rotated so as to be in a substantially horizontal state, the projection piece 32A comes into contact with the contact spring of the lower limit switch LS2 to stop the operation by the drive motor 39 and prevent further rotation. To do. On the other hand, when the rotation base 32 is rotated so that the rotation angle is, for example, the maximum tilt state between approximately 90 ° and 45 °, the projection piece 32A comes into contact with the contact spring of the upper limit switch LS1 to drive the drive motor. The operation by 39 is stopped to prevent further rotation in the tilt direction. The drive motor 39 is operated by operating a switch provided on the outer wall surface of the oven kiln 1.

Thus, the state in which the upper heat source 3 together with the rotary base 32 are inclined inward from a substantially horizontal position (see FIG. 6) to an arbitrary angle within the range of about 90 ° to 45 ° (FIG. 7) (See the above), it becomes possible to select the irradiation area of the upper heat source 3 to the reflecting member 17 side, and at the same time, the partition plate 36 bends inward as the rotation base 32 rotates, so that the diffused radiation from the reflecting member 17 occurs. The radiant heat that has come is reflected inside. In order to indicate the rotation amount of the rotary base 32, a pointer 32B for scale is attached to one end of the rotary base 32 on the hinge side, while a circle indicated by the pointer 32B is provided on the inner wall of the oven kiln 1. Arc scale scale 32
C is attached.

FIGS. 8 and 9 show the case where the upper heat source 3 is an infrared Schwank burner or a gas burner, and a concrete example of the baking unevenness adjusting mechanism 30 by a rotating mechanism for changing the irradiation angle of the upper heat source 3. The general structure is substantially the same as that when a ceramic heater is adopted as the upper heat source 3. Reference numeral 39B in the drawing is a flexible tube for following the angle of the supply pipeline when the angle is adjusted in the upper heat source 3 which is an infrared Schbank burner or a gas burner.

Next, to explain an example of use and operation of the embodiment configured as described above, the oven kiln 1 will be described.
The drive motor 39 is operated by operating a switch provided on the outer wall surface of the
The rotary base 32 is rotated by operating the
The irradiation area of the upper heat source 3 with respect to the reflection member 17 of the reflection mechanism 10 is selected in advance. At this time, as shown in FIG. 6 or FIG. 8, when the rotation base 32 is rotated so as to be in a substantially horizontal state, the projection piece 32A comes into contact with the contact spring of the lower limit switch LS2 to drive the motor 39. The operation by stops. On the other hand, as shown in FIG. 7 or 9, the rotation base 32 has, for example, rotation angles of about 90 ° and 45 °.
When the rotational position is such that the maximum inclination state is between the and, the protruding piece 32A comes into contact with the contact spring of the upper limit switch LS1 to stop the operation by the drive motor 39. The rotation amount of the rotary base 32 can be easily set by aligning the scale pointer 32B of the rotary base 32 with an arbitrary scale position of the scale 32C.
As a result, it is possible to finely adjust the unevenness of baking with respect to the workpiece W, which is various kinds of cloth materials and the like arranged on the hot plate 2.

(Convection Heat Adjusting Mechanism 40) The specific structure of the convection heat adjusting mechanism 40 in the oven apparatus according to the present invention will be described below with reference to FIGS. 10 and 11. Convection heat adjusting mechanism 40 arranged on the left and right inside the oven kiln 1.
Are provided so as to face the upper heat source 3 installation side, and the upper heat source 3
A horizontal hanging plate 46 formed by adhering, for example, asbestos on the surface of the mesh-like iron net plate for shielding the radiant heat from the above to the workpiece W side on the hot plate 2 so as not to become excessive.
From the adjusting plate 45 for improving the heat transfer to the workpiece W side on the hot plate 2 by combining the radiant heat flux from the lower heat source 4 with the radiant heat flux of the upper heat source 3 to generate convection. It is configured.

That is, a fixing base for standing and arranging the inner wall of the oven kiln 1 and the edge of the heating plate 2 with a gap having a required width and mounting and fixing the upper heat source 3 on the upper end. Stand 42
With respect to the left and right partition wall portions 41 that are mounted and mounted, the support frame 43 on the horizontally long strip plate is erected from the edge portion of the heat plate 2 located inside to partition the partition wall portion 41 and the support frame 43. By forming a gap between the heat plate 2 and the lower heat source 4 for directly heating the heat plate 2 from the lower side, the lower part is provided by this gap to guide the radiant heat to the upper side of the heat plate 2 after passing through the upper heat source 3. A radiant heat flow path of the heat source 4 is formed. Then, on the upper end side of the support frame 43, the adjusting screws 4 arranged on the left and right are provided.
An L-shaped strip-shaped adjusting plate 45, which is composed of a horizontal surface portion 45A and a vertical surface portion 45B, which can be fixed in such a manner as to be movable in the horizontal direction, is arranged. Further, the adjusting screws 44 are attached to the left and right ends of the vertical surface portion 45B of the adjusting plate 45, respectively, and the horizontal plane portion 45A of the adjusting plate 45 is moved to the upper end side of the support frame 43 by the twist rotation of the adjusting screw 44 in the pushing direction. The adjustment screw 44 can be moved close to the partition wall portion 41 side in a direction to close the radiant heat flow path of the lower heat source 4.
The horizontal plane portion 45A of the adjusting plate 45 can be moved away from the partition wall portion 41 on the upper end side of the support frame 43 by the twist rotation in the pulling-out direction of the adjusting plate 45 so as to move in the direction in which the radiant heat flow path of the lower heat source 4 is expanded. By this, the heat power due to the convection of the lower heat source 4 can be finely adjusted.

At the upper end of the support frame 43, a horizontal hanging plate 4 is provided.
The horizontal hanging plate 46 can be erected and arranged at an arbitrary height via the bifurcated leg portions 47 provided on both ends of the lower edge portion of the reference numeral 6. That is, on the left and right end sides of the lower edge of the horizontal plate 46,
An insertion groove portion 48 having a rectangular columnar outer shape and a slit width corresponding to the thickness of the support frame 43 is formed on the lower surface of the leg portion 47 at the lower end. A plurality of holes 48A for vertically inserting the engaging pin members 49 are formed adjacent to each other in the vertical direction on the side surface of the leg portion 47 so as to pass through the insertion groove portion 48, whereby the support frame is formed. The support frame 43 is locked by the pin member 49 when the insertion groove portion 48 of the leg portion 47 is fitted into the upper end of the 43. Therefore, the horizontal plate 46 with respect to the support frame 43
In the case of appropriately changing the erection height of (1), it can be easily performed by selecting a plurality of holes 48A through which the pin member 49 is inserted. When fitting the leg portion 47 of the horizontal hanging plate 46 to the upper end of the support frame 43, recesses 45C are provided on both sides of the horizontal plane portion 45A so that the horizontal plane portion 45A of the adjusting plate 45 does not act as a barrier. Further, a scale pointer 41A is attached to the partition wall portion 41, while the adjustment plate 45 is provided.
A scale 41B for scale indicated by a pointer 41A is attached to the horizontal plane portion 45A.

Next, in order to explain an example of the use and operation of the embodiment configured as described above, as shown in FIG. 11, when the heating power is weakened when the heating power by the convection of the lower heat source 4 is adjusted. The horizontal plane portion 45A of the adjusting plate 45 moves toward the partition wall portion 41 side on the upper end side of the support frame 43 and closes the radiant heat flow path of the lower heat source 4 by twisting the adjusting screw 44 in the pushing direction. . On the other hand, when the heating power is to be increased, the horizontal plane portion 45A of the adjusting plate 45 is rotated by twisting the adjusting screw 44 in the pull-out direction so that the supporting frame 4 is supported.
3 The upper end side moves away from the partition wall portion 41 and moves in a direction in which the radiant heat flow path of the lower heat source 4 is expanded. With this, it is possible to finely adjust the thermal power generated by the convection of the lower heat source 4.
Further, when the installation height of the horizontal hanging plate 46 with respect to the support frame 43 is appropriately changed, any one of the plurality of hole portions 48A is selected, and the pin member 49 is inserted there, and then the horizontal hanging plate 46 is inserted. The legs 47 of the above may be fitted to the upper end of the support frame 43. In this way, the radiant heat to the workpiece W to be fired can be evenly dispersed by closing or expanding the radiant heat flow path by the horizontal plane portion 45A of the adjusting plate 45, changing the erection height of the horizontal hanging plate 46, and the like. The work W does not burn, and the convective heat transfer of the radiant heat from the upper and lower heat sources 3 and 4 makes it possible to form a convective heat transfer system in the oven kiln 1 according to the firing conditions. On the other hand, burning unevenness and the like are eliminated.

(Heat Source Cooling Mechanism 50) The specific configuration of the heat source cooling mechanism 50 in the oven apparatus according to the present invention will be described below with reference to FIGS. 12 and 13. First, a case where a ceramic heater is used as the upper heat source 3 will be described. That is, the heat source cooling mechanism 50 of the upper heat source 3 provided on the left and right inside the oven kiln 1 has a plurality of rectangular intake openings for taking in outside air from the side surface air supply port 54C described later through the bottom surface side duct portion. Exposing a bottom surface portion 53 inside the oven kiln 1 having a portion 53A, and a side surface air supply port 54B formed by adhering a heat insulating material 54A inside and forming a plurality of small holes of the bottom surface portion 53 adjacently in a horizontal row. Te oven kiln 1
Side wall portions 54 that form the outer walls of the left and right side surfaces, a partition wall portion 51 that has a gap of a required width with the side wall portions 54, and is erected as a partition wall inside the oven kiln 1 to stand upright, At the upper end of the wall portion 51, for example, four ceramic heaters as a plurality of upper heat sources 3 which are mounted and fixed in a stepped shape slightly inclined toward the inside of the oven kiln and have a rectangular shape on the upper surface are separated in the longitudinal direction. Arranged strip-shaped fixed base 5
2 and a ceiling side vertical duct part 55B formed by adjoining a plurality of rectangular hole parts 55A arranged directly upward from the outer edge part of the fixed base 52 and communicating with the ceiling side vertical duct part 55B upper side. Arranged substantially trapezoidal hollow exhaust port 55
A ceiling 55 inside the oven kiln 1 including C, a front wall 56 provided with an operation panel 56A of the oven kiln 1, and a rear surface having a substantially rectangular back face air supply port 57A for taking in outside air. The cooling heat exchange chamber P has a substantially rectangular shape and is surrounded by the wall portion 57 and the wall portion 57.

Next, in order to explain an example of use and operation of the embodiment configured as described above, as shown in FIG. 12, from the side air supply port 54A of the side wall 54 to the bottom side duct. The outside air is taken into the heat exchange chamber P for cooling inside the oven kiln 1 through the intake opening 53A of the bottom surface part 53 through the section. At the same time, outside air is also taken into the cooling heat exchange chamber P inside the oven kiln 1 from the rear surface air supply port 57A of the rear wall portion 57. The outside air taken into the cooling heat exchange chamber P is a portion on the lower surface side of the upper heat source 3, for example, in the case of a ceramic heater, after cooling the energizing nichrome wiring part, the heated outside air rises and the ceiling part rises. The air is exhausted to the outside from the exhaust port 55C through the ceiling-side vertical duct portion 55B of 55. In this way, the cooling system utilizing the principle of natural convection prevents the life of the upper heat source 3 from being shortened due to the high temperature.

FIG. 13 shows a case where an infrared Schwank burner or a gas burner is adopted as the upper heat source 3 instead of the ceramic heater. That is, when the temperature of the mixing tube 58 such as an infrared Schwank burner or a gas burner arranged on the lower surface side of the upper heat source 3 becomes extremely high, the life of the burner itself becomes extremely short. Cooling the mixing tube 58 should extend the life of the burner.

Specifically, a cooling system utilizing the so-called natural convection principle is used in which sufficient heat is sent to the primary air inlet 58A of the mixing tube 58 while the outside of the main body is insulated. For example, the primary air inlet 58A of the mixing tube 58 provided on the lower side of the infrared Schwank burner or the gas burner arranged on the fixed base 52 is made to face the rear air supply port 57A of the rear wall 57. Then, from the side surface air supply port 54A of the side wall portion 54 to the bottom surface portion 53 via the bottom surface side duct portion.
Outside air through the plurality of rectangular openings 53A of the oven kiln 1
It is taken into the internal heat exchange chamber P for cooling. At the same time, outside air is also taken into the cooling heat exchange chamber P inside the oven kiln 1 from the rear surface air supply port 57A of the rear wall portion 57. The outside air taken into the cooling heat exchange chamber P is sent to the primary air intake port 58A of the mixing pipe 58 which is the lower surface side of the upper heat source 3 to cool the mixing pipe 58 itself, and then the warmed outside air. While rising, the air is exhausted to the outside from the exhaust port 55C through the ceiling side vertical duct portion 55B of the ceiling portion 55. As described above, the cooling system using the principle of natural convection prevents the life of the upper heat source 3 from being shortened due to the high temperature.

[0034]

Since the present invention is configured as described above, the position and direction of the upper heat source 3 can be arbitrarily finely adjusted in order to arbitrarily change the irradiation area of the reflecting member 17 by the upper heat source 3. By doing so, it is possible to uniformly irradiate all the workpieces W without causing unevenness in baking.
Further, the heat storage rate / radiation efficiency of the reflecting member 17 can be improved, and the entire workpiece W can be efficiently irradiated, and convective heat due to radiation from the lower heat source 4 can be adjusted. As a result, it is possible to prevent only the lower side of the hot plate 2 from reaching an extremely high temperature state, and thus it is possible to avoid locally burning only the lower surface of the workpiece W on the hot plate 2. Also, an oven device is provided in which a cooling system using natural convection is arranged behind the upper heat source 3 to enable cooling of the rear side portion of the upper heat source 3, thereby extending the life of the upper heat source 3. can do.

That is, the near-infrared rays from the upper heat source 3 directed upward with respect to the workpiece W placed on the hot plate 2 in the oven kiln 1 are diffusely reflected and diffusely radiated onto the hot plate 2. The reflection mechanism 10 for performing the heat treatment is a support rod 1 supported along the front and rear of the oven kiln 1 by a support member 11 symmetrically arranged in the front and rear of the oven kiln 1.
6 is provided with a reflecting member 17 supported by being inserted to the outside, and the reflecting member 17 has a large thermal conductivity and a large thermal diffusivity as compared with the supporting rod 16 in order to provide high heat storage and high radiation efficiency. It is formed of a large pipe material, and a heat storage pipe material 18 having a specific heat smaller than that of the pipe material and a thermal conductivity and a thermal diffusivity larger than that of the pipe material is inserted into the inner peripheral surface of the pipe material. The heat storage space state in 1 can be maintained for a long time, and the irradiation heating efficiency by the radiant heat to all the workpieces W on the hot plate 2 can be further improved as compared with the conventional case. .

Far-infrared rays from the upper heat source 3 directed upward with respect to the workpiece W placed on the hot plate 2 in the oven kiln 1 are diffusely radiated onto the hot plate 2 by being diffusely reflected by the reflecting mechanism 10. In the oven apparatus that heats the heating plate 2 itself by the lower heat source 4 arranged below the heating plate 2, the upper heat source 3 is arbitrarily selected for the reflecting member 17 of the reflecting mechanism 10. As the heat source 3, a baking unevenness adjusting mechanism 2 such as a sliding mechanism or a rotating mechanism is used.
Since 0 and 30 are provided, the position and direction of the upper heat source 3 can be easily fine-tuned to arbitrarily change the irradiation area of the reflecting member 17 by the upper heat source 3, and It is possible to uniformly irradiate an object without causing unevenness of baking.

The unevenness adjusting mechanism 20 using a sliding mechanism is
A fixed base 22 fixedly mounted on the upper end of a partition wall portion 21 standing upright with a gap of a required width between the inner wall of the oven kiln 1 and the edge portion of the heating plate 2, and a plurality of upper portions. Since the heat source 3 is fixedly arranged in a separated state and includes a sliding plate 23 that can slide back and forth on the fixed base 22, the irradiation area of the reflecting member 17 by the upper heat source 3 can be arbitrarily set. The position of the upper heat source 3 can be easily finely adjusted in the front-rear horizontal direction so that the entire workpiece W can be uniformly irradiated without causing unevenness in baking.

The grilling unevenness adjusting mechanism 30 based on the rotating mechanism is
The inner wall of the oven kiln 1 and the edge of the heating plate 2 are pivoted so as to be rotatable via hinges 33 at the upper ends of the left and right partition wall portions 31 which are vertically arranged with a gap having a required width. The rotary base 32 that is attached and fixed on one side with a plurality of upper heat sources 3 spaced apart from each other, and one side of the rotary base 32 that reflects the radiant heat diffused and radiated from the reflecting member 17 to the inside. A plurality of flexible partition plates 36 are connected and arranged in a state of being adjacent to each other between the edge portion on one side and the ceiling portion inside the oven kiln 1, and the tooth portion is formed inside the right-angled edge portion of the rotary base 32. Rack gear 38 screwed so as to face outward
And the tooth portion of the rack gear 38 meshes with the pinion gear 3
9A, a drive motor 39, a protrusion piece 32A extending to an edge portion on the other side piece of the rotation base 32, and a rotation base 32.
Both the upper and lower limit switches LS arranged on the movement locus of the protrusion 32A so that the drive motor 39 is stopped by the protrusion 32A coming into contact with the rotation of the protrusion 32A.
1 and LS2, the irradiation direction of the upper heat source 3 is changed from a substantially horizontal state in order to arbitrarily change the irradiation area of the reflection member 17 by the upper heat source 3, for example, the rotation angle is 90 ° to 4 °.
Fine adjustment can be easily performed up to the maximum inclination state of 5 °, and the entire workpiece W can be uniformly irradiated without causing unevenness in baking.

Far infrared rays from the upper heat source 3 directed upward with respect to the workpiece W placed on the heating plate 2 in the oven kiln 1 are diffusely radiated onto the heating plate 2 by being diffusely reflected by the reflection mechanism 10. In the oven device that heats the heating plate 2 itself by the lower heat source 4 disposed below the heating plate 2, the left and right sides of the heating plate 2 are opened and closed to finely adjust the heat generated by convection from the lower heat source 4. Since the convection heat adjusting mechanism 40 having a movable partition adjusting plate structure is provided, the lower heat source 4
It is possible to easily adjust the convective heat due to the radiation from the heat plate 2 and prevent only the lower part of the heat plate 2 from becoming extremely hot.
As a result, it is possible to prevent the lower surface of the workpiece W on the hot plate 2 from being extremely burnt.

The convection heat adjusting mechanism 40 is vertically arranged with a gap having a required width between the inner wall of the oven kiln 1 and the edge of the heating plate 2, and the upper heat source 3 is placed and fixed on the upper end. A gap is formed between the left and right partition wall portions 41 in which the fixed base 42 is mounted and arranged, and the support frame 43 which is arranged upright from the edge of the heat plate 2 located inside the partition wall portion 41. By that,
With respect to the lower heat source 4 which directly heats the heat plate 2 from the lower side, the radiant heat flow path of the lower heat source 4 is formed by this gap to guide the radiant heat to the upper side of the heat plate 2 after passing through the upper heat source 3. From the upper heat source 3 to shield the radiant heat from the heat plate 2 toward the workpiece W so that the radiant heat does not become excessive.
At the upper end of the support frame 43 provided facing the installation side, a horizontal hanging plate 46 that can be erected at an arbitrary height can be installed, and the radiant heat flux from the lower heat source 4 can be combined with the radiant heat flux of the upper heat source 3. Workpiece W on hot plate 2 by generating convection
Since it is composed of an adjusting plate 45 which can be horizontally movably fixed to the upper end side of the support frame 43 through an adjusting screw 44 so as to improve heat transfer to the side, the heat power due to the convection of the lower heat source 4 is adjusted. In this case, when the heating power is weakened, the adjusting plate 45A approaches the partition wall 41 side on the upper end side of the support frame 43 by the twist rotation of the adjusting screw 44 in the pushing direction to close the radiant heat flow path of the lower heat source 4. It can be easily moved to.

On the other hand, when the heating power is strengthened, the adjusting plate 45 is separated from the partition wall portion 41 on the upper end side of the support frame 43 by the twist rotation of the adjusting screw 44 in the pull-out direction to expand the radiant heat flow path of the lower heat source 4. It can be easily moved to. Further, a horizontal hanging plate 46 capable of shielding the upper heat source 3 by appropriately changing the erection height with respect to the support frame 43.
Thus, it is possible to prevent the radiant heat from excessively reaching from the upper heat source 3 toward the workpiece W on the hot plate 2. In this way, the adjustment plate 45 closes or expands the radiant heat flow path,
By changing the erection height of the horizontal hanging plate 46 or the like, the radiant heat to the workpiece W to be fired can be evenly dispersed, and the burning of the workpiece W can be prevented. In addition, the convection heat transfer due to the confluence of the radiant heat fluxes from the upper and lower heat sources 3 and 4 makes the inside of the oven kiln 1 a convection heat transfer system according to the firing conditions, thereby preventing baking unevenness on the workpiece W. can do.

Far infrared rays from the upper heat source 3 directed upward with respect to the workpiece W placed on the hot plate 2 in the oven kiln 1 are diffusely radiated onto the hot plate 2 by being diffusely reflected by the reflecting mechanism 10. In the oven device that heats the hot plate 2 itself by the lower heat source 4 arranged below the hot plate 2, the inside of the oven kiln 1 is supplied from the air inlet provided on the rear side or the left and right side of the oven kiln 1. The upper heat source 3 is provided with the heat source cooling mechanism 50 that sends the outside air and cools the back side portions of the upper and lower heat sources 3 and 4 by natural convection.
The backside portion of the upper heat source 3 can be efficiently cooled by natural convection on the rear side of the upper heat source 3, and the life of the upper heat source 3 can be extended.

The heat source cooling mechanism 50 has a bottom surface 53 inside the oven kiln 1 having an intake opening 53A for taking in outside air.
And the heat insulating material 54A is attached to the inside and the side air supply port 54
A side wall portion 54 having C, a partition wall portion 51 having a gap of a required width with the side wall portion 54 and standing up and arranged as a partition wall inside the oven kiln 1, and an upper end of the partition wall portion 51. In the oven kiln 1, a fixed base 52 having a step shape slightly inclined toward the inside of the oven kiln 1 is fixedly mounted on the upper surface, and an upper heat source 3 is provided on the upper surface at a distance. A ceiling-side vertical duct 55B in which a plurality of arranged holes 55A are formed adjacent to each other, and a substantially trapezoidal hollow exhaust port 55 that is arranged in communication with the upper side of the ceiling-side vertical duct 55B.
A ceiling 55 inside the oven kiln 1 including C, a front wall 56 having an operation panel 56A of the oven kiln 1, and a back wall 57 having a back air supply port 57A for taking in outside air.
And the heat exchange chamber P for cooling that is surrounded by
Since it is configured by including the outside air from the side surface air supply port 54A of the side wall portion 54 through the intake opening portion 53A of the bottom surface portion 53 into the heat exchange chamber P for cooling inside the oven kiln 1, at the same time the rear wall Rear part air supply port 57 of the part 57
The outside air from A is also taken into the cooling heat exchange chamber P inside the oven kiln 1, and the outside air taken into the cooling heat exchange chamber P can efficiently cool the lower surface side portion of the upper heat source 3. . Further, the warmed outside air can be easily exhausted to the outside from the exhaust port 55C via the ceiling side vertical duct portion 55B of the ceiling portion 55 while rising.
As a result, the backside portions of the upper and lower heat sources 3 and 4 exposed to the high-temperature heating atmosphere can be efficiently cooled by natural convection without using a convection fan device or a cooling device with a refrigerant mechanism. It is possible to extend the life of the upper and lower heat sources 3 and 4 themselves.

Since the upper and lower heat sources 3 and 4 employ heat source members such as ceramic heaters and infrared Schwank burners, the near-infrared rays from the upper heat source 3 are diffusely reflected by the reflecting mechanism 10 and diffusely radiated onto the hot plate 2. It is possible to provide an oven device in which the heat storage effect is enhanced by performing heat treatment by heating and heating the heating plate 2 itself from below by far-infrared rays from the lower heat source 4, and maintenance is easy.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the inside of an oven kiln of an oven device according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the inside of an oven kiln showing a configuration in which the upper heat source is tilted differently.

FIG. 3 is a schematic perspective view of an essential part of the reflection mechanism.

FIG. 4 is an enlarged perspective view of an essential part of a reflection member of the reflection mechanism.

5A and 5B show an embodiment of an unevenness adjusting mechanism using a sliding mechanism, in which FIG. 5A is a perspective view illustrating a sliding state, and FIG.
FIG. 7A is a cross-sectional view taken along line XX in FIG.

FIG. 6 shows an embodiment of a baking unevenness adjusting mechanism by a rotating mechanism when the upper heat source is a ceramic heater,
(A) is a front view showing a state before a rotating operation, and (b) is a side view showing a state before the rotating operation.

FIG. 7 is a front view showing the state after the rotation operation.

FIG. 8 is a view showing one form of a baking unevenness adjusting mechanism by a rotating mechanism when the upper heat source is an infrared Schbank burner or a gas burner, and (a) is a front view showing a state before rotating operation; [Fig. 6] is a side view showing a state before a rotating operation.

FIG. 9 is a front view showing a state after the same rotation operation.

FIG. 10 is a perspective view showing one form of a convection heat adjustment mechanism inside the oven kiln of the oven device.

11 is a cross-sectional view of a portion A in FIG.

FIG. 12 is a perspective view showing one form of a heat source cooling mechanism inside the oven kiln when the upper heat source is a ceramic heater.

FIG. 13 is a perspective view showing one form of a heat source cooling mechanism inside the oven kiln when the upper heat source is an infrared Schwank burner or a gas burner.

FIG. 14 is a schematic perspective view of the entire oven apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Oven kiln 2 ... Heating plate 3 ... Upper heat source 4 ... Lower heat source 10 ... Reflection mechanism 11 ... Supporting member 12 ... Fixing piece 13 ... Connecting piece 14 ... Mounting supporting piece 15 ... Mounting part 16 ... Supporting rod 17 ... Reflecting member 18 ... Pipe material for heat storage W ... Workpiece 20 ... Adjusting unevenness mechanism 21 by sliding mechanism 21 ... Partition wall 22 ... Fixed base 22A ... Scale for scale 23 ... Sliding plate 23A ... Pointer 24 ... Fixing metal 25 ... Screw hole 26 ... Slot 27 ... Fixing screw 30 ... Rotation mechanism unevenness adjusting mechanism 31 ... Partition wall portion 32 ... Rotation base 32A ... Projection piece 32B ... Pointer 32C ... Scale for scale 33 ... Hinge 34 ... Fixing metal fitting 35 ... Chain member 36 ... Partition plate 37 ... Flange portion 38 ... Rack gear 39 ... Drive motor 39A ... Pinion gear 39B ... Flexible tube LS1 ... Upper limit switch LS2 ... Lower limit switch 40 ... Convection heat adjusting mechanism 41 ... Partition wall 41A ... Pointer 41B ... Scale 42 ... Fixed base 43 ... Support frame 44 ... Adjusting screw 45 ... Adjusting plate 45A ... Horizontal plane 45B ... Vertical surface 45C ... Recess 46 ... Horizontal drip Plate 47 ... Leg 48 ... Inserting groove 48A ... Hole 49 ... Pin member 50 ... Heat source cooling mechanism 51 ... Partition wall 52 ... Fixed base 53 ... Bottom 53A ... Intake opening 54 ... Side wall 54A ... Heat insulating material 54B ... Side air supply port 55 ... Ceiling part 55A ... Hole part 55B ... Ceiling side vertical duct part 55C ... Exhaust port 56 ... Front wall part 56A ... Operation panel 57 ... Back wall part 57A ... Back part air supply port 58 ... Mixing pipe 58A ... Primary air intake P ... Cooling heat exchange chamber 61 ... Opening / closing door

Claims (9)

[Claims] 1. A heat treatment by diffusely radiating near-infrared rays from an upper heat source directed upward with respect to a workpiece placed on a hot plate in an oven kiln by a reflection mechanism to diffusely radiate on the hot plate. In the oven device that heats the hot plate itself by the lower heat source arranged below the hot plate, the reflection mechanism is supported along the front and rear of the oven kiln by the supporting members symmetrically arranged in the front and rear of the oven kiln. The supporting member has a supporting member and a reflecting member supported by being inserted outside the supporting member, and the reflecting member has a thermal conductivity higher than that of the supporting member in order to provide high heat storage and high radiation efficiency. Is formed of a pipe material having a large thermal conductivity and a large thermal diffusivity, and a heat storage pipe material having a smaller specific heat and a larger thermal conductivity / thermal diffusivity than the pipe material is inserted into the inner peripheral surface of the pipe material. Characterized by Oven equipment. 2. A heat treatment is performed by diffusely radiating near-infrared rays from an upper heat source directed upward with respect to a workpiece placed on a hot plate in an oven kiln by a reflection mechanism to diffusely radiate on the hot plate. In the oven device that heats the hot plate itself by the lower heat source arranged below the hot plate, the upper heat source has a sliding mechanism or a rotating mechanism so that the irradiation area of the upper heat source with respect to the reflecting member of the reflecting mechanism can be arbitrarily selected. An oven device characterized by comprising a baking unevenness adjusting mechanism according to. 3. A baking unevenness adjusting mechanism using a sliding mechanism is mounted on an upper end of a partition wall portion which is arranged upright with a gap having a required width between an inner wall of an oven kiln and an edge portion of a hot plate. The oven apparatus according to claim 2, further comprising: a fixed base that is fixed, and a slide plate that is fixedly arranged in a state in which a plurality of upper heat sources are spaced apart from each other and that can slide back and forth on the fixed base. . 4. A mechanism for adjusting uneven baking by a rotating mechanism comprises hinges on the upper ends of the left and right partition walls which are vertically arranged with a gap having a required width between the inner wall of the oven kiln and the edge of the hot plate. In order to reflect the radiant heat diffused and radiated from the reflecting member to the inside, the rotary base is rotatably pivoted through and fixed on one side piece with a plurality of upper heat sources spaced apart from each other. Inside the right-angled edge of the rotary base, a flexible partition plate is connected and arranged in a plurality of adjacent positions between the edge on one side of the rotary base and the ceiling location inside the oven kiln. A rack gear fixed with screws so that the teeth face outward, a drive motor having a pinion gear with which the teeth of the rack gear are meshed, and a projection piece extending to an edge portion on the other side piece of the rotation base. , As the rotating base rotates, The oven apparatus according to claim 2, further comprising: an upper limit switch and a lower limit switch disposed on a movement locus of the protrusion so as to perform stop control of the data. 5. A heat treatment is performed by diffusely radiating near-infrared rays from an upper heat source directed upward with respect to a workpiece placed on a hot plate in an oven kiln by a reflection mechanism to diffusely radiate on the hot plate. In the oven device that heats the hot plate itself by the lower heat source placed below the hot plate, the convection of the partition adjustment plate structure that can be opened and closed can be finely adjusted on the left and right sides of the hot plate due to the convection from the lower heat source. An oven apparatus comprising a heat adjusting mechanism. 6. The convection heat adjusting mechanism is a fixed base in which an inner side wall of an oven kiln and an edge portion of a hot plate are vertically arranged with a gap having a required width, and an upper heat source is placed and fixed on the upper end. By forming a gap between the left and right partition walls formed by mounting and placing the stand and the support frame standing upright from the edge of the heat plate located inside the partition wall, the heat plate is lowered. The radiant heat flow path of the lower heat source is formed by this gap to guide the radiant heat to the upper side of the hot plate after passing through the upper heat source to the lower heat source that is directly heated from the side, and the upper heat source to the work piece side on the hot plate. The radiant heat from the lower heat source and the horizontal hanging plate that can be erected at any height at the upper end of the support frame that is installed facing the upper heat source installation side so as to shield the radiant heat toward the upper side Convection by combining the flux with the radiant heat flux of the upper heat source 6. An adjusting plate which is movably fixed in the horizontal direction via an adjusting screw on the upper end side of the supporting frame so as to improve heat transfer to the workpiece side on the hot plate. Oven equipment. 7. A heat treatment by diffusely radiating near-infrared rays from an upper heat source directed upward with respect to an object to be processed placed on a hot plate in an oven kiln by a reflection mechanism to diffusely radiate on the hot plate. In the oven device that heats the hot plate itself by the lower heat source arranged below the hot plate, the outside air is sent into the oven kiln from the air supply port provided on the rear side or the left and right side surfaces of the oven kiln, and An oven apparatus comprising a heat source cooling mechanism for cooling the back side portion by natural convection. 8. The heat source cooling mechanism has a bottom surface inside the oven kiln having an intake opening for taking in outside air, a side wall having a side air supply port and a heat insulator attached inside, and a side wall. Section and a partition wall part that has a required width and is placed upright inside the oven kiln as a partition wall, and a stepped shape that is slightly inclined toward the inside of the oven kiln at the upper end of the partition wall part. A ceiling-side vertical duct part that is fixedly mounted on the upper surface and has a plurality of holes arranged directly upward from the outer edge end of the fixed base and a fixed base on which an upper heat source is spaced apart, and The ceiling part inside the oven kiln, which is provided with a generally trapezoidal hollow exhaust port, which is connected to the upper side of the ceiling side vertical duct part, the front wall part equipped with the operation panel of the oven kiln, and the rear part intake for taking in outside air. Surrounded by each with a back wall that has a vent The oven device according to claim 7, wherein the oven device is provided with a cooling heat exchange chamber formed. 9. The oven apparatus according to claim 1, wherein the upper and lower heat sources employ a heat source member such as a ceramic heater or an infrared schwank burner.