JP2527590Y2 - Baking drying oven - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a baking drying oven.

More specifically, the present invention relates to a baking drying furnace for heating and drying a work such as an automobile body coated with a paint.

[0003]

2. Description of the Related Art FIG. 7 is a diagram showing a schematic configuration of a conventional baking / drying oven.

In a conventional baking / drying oven, a duct 8, an exhaust duct 9, and a heating device 30 which blow hot air into the furnace while transporting a workpiece using transporting means (not shown) in the longitudinal direction of the tunnel type furnace body 1. It is generally configured to circulate through the air.

More specifically, a plurality of hot air outlets 8e are provided in the blow-out duct 8 along the work transfer direction. Further, the exhaust duct 9 is formed with a plurality of hot air outlets 9e opened downward.

The heating device 30 includes a heater (for example, a heat exchanger 32 and a burner 33) for heating the temperature of the sent air (hot air) to a predetermined temperature, and a furnace body 1 from the exhaust duct 9.
The air (hot air) inside is sucked into the suction duct 35 and the filter 31.
And a circulation fan 34 for sucking and introducing the air (hot air) heated by the heaters (32, 33) through the discharge duct 36 to the blow-out duct 8 in the furnace body 1 through the heaters (32, 33). It is comprised including. Usually, the blow-out and suction ducts 8, 9 are made of metal.

[0007]

By the way, in order to assemble the baking / drying furnace described above, the furnace body 1 is constructed by using a large number of wall materials, and then the heating device 30 is assembled and arranged in the vicinity of the furnace body 1. The heating device 30 and the furnace body 1 are connected to each other using the suction duct 35 and the discharge duct 36, but such duct connection work is inconvenient and very troublesome.

The suction duct 35 and the discharge duct 3
Since the heat from the furnace 6 is dissipated intensely, it is difficult to maintain the inside of the furnace body 1 at a predetermined temperature (for example, 180 ° C.), and it is likely to adversely affect the formation of a coating film on a work. In order to avoid such inconvenience, it is necessary to cover the ducts 35 and 36 with a heat insulating material to prevent heat dissipation. However, such heat insulating work is troublesome and time-consuming, so that the baking / drying furnace is required. Assembly efficiency is further reduced.

[0009] Recently, miniaturization has been demanded from the viewpoint of equipment economy. Therefore, it is conceivable to reduce the size of the suction duct 35 and the discharge duct 36 in order to meet such a request. However, in this case, each duct 3
The resistance of the air passing through the insides 5 and 36 increases, and there is a possibility that sufficient hot air cannot be circulated and supplied into the furnace body 1.

An object of the present invention is to provide a baking / drying furnace which can be reduced in size and which is easy to assemble in view of the above circumstances.

[0011]

SUMMARY OF THE INVENTION The present invention is directed to a baking and drying furnace for circulating hot air in a furnace through a heating device including components including a heater and a circulation fan.
The heating device is formed in a unit type in which its components are continuously connected in a hot air circulation passage of an airtight casing, and an exhaust gas having an upstream portion opened from a heater of a hot air circulation passage of the airtight casing in a furnace body side wall. The hot air circulation passage is connected directly to the inlet and the downstream side of the heater in the hot air circulation passage is directly connected to the air supply opening opened in the furnace body side wall.

A second aspect of the present invention is a baking and drying furnace for circulating hot air in a furnace through a heating device including components including a heater and a circulating fan.
The component parts are formed in a unit type connected in the hot air circulation passage of the airtight casing, and the upstream portion of the heater of the hot air circulation passage of the airtight casing is directly connected to an exhaust port opened in the furnace body ceiling wall. In addition, a portion of the hot air circulation passage downstream of the heater is directly connected to an air supply opening formed in the ceiling wall of the furnace body.

[0013]

According to the first aspect of the present invention, the hot air in the furnace is directly discharged from the exhaust port of the side wall of the furnace by the circulation fan of the heating device.
After being sucked into the hot air circulation passage of the airtight casing and heated by the heater, it is directly circulated into the furnace from the air supply port on the side wall of the furnace body. As described above, the furnace body (exhaust port, air supply port) and the heating device (airtight casing) are directly connected to each other, and since there is no suction duct or discharge duct between them as in the related art, it is troublesome and troublesome. There is no need to perform duct connection work (hence, the work of covering the duct with heat insulating material is also unnecessary).

Further, since the heating device is formed into a unit using an airtight casing, it is not necessary to perform a troublesome assembling and adjusting work at an assembling site. Further, since the heating device is integrally attached to the furnace body side wall, the size can be easily reduced.

Therefore, the size can be reduced and the assembling becomes easy.

According to the second aspect of the present invention, similarly to the first aspect of the present invention, the components of the heating device (circulation fan, heater, etc.) are provided continuously in the hot air circulation passage of the airtight casing. Since the passage is directly connected to the exhaust port and the air supply port of the furnace ceiling wall, there is no need to perform duct connection work or heat insulation work. In addition, the hermetic casing, in which the components of the heating device are assembled, is transported to the assembling location, and the assembly can be completed simply by being integrally attached to a predetermined portion of the ceiling wall of the furnace body. There is no need to perform assembly and adjustment work. In addition, since the heating device (airtight casing) is integrally attached to the furnace body ceiling wall, miniaturization is achieved.

In particular, in the present baking drying furnace, since the heating device is attached to the upper part of the furnace body, which is generally a dead space, the space around the furnace body can be more effectively used.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a front view showing an essential part of a first embodiment of the present invention, FIG. 2 is a side view showing the same, and FIG. 3 is a partially cutaway perspective view showing the entire structure. is there.

The baking / drying furnace according to the present embodiment comprises a furnace body 1, blow-off ducts 8, 8, exhaust ducts 9, 9, and a heating device 1.
0 and 10 are constituted.

The same components as those shown in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted or simplified.

In this embodiment, the outlet duct 8 communicates with the hot air circulation passage 22 of the airtight casing 21 of the heating device 10 through the air supply port 3 opened in the furnace body side wall.

The exhaust duct 9 is connected to the airtight casing 2 of the heating device 10 through an exhaust port 4 opened on the furnace body side wall.
It communicates with one hot air circulation passage 22.

On the other hand, the heating device 10 is means for heating the air (hot air) discharged from the furnace and circulating it to the blow duct 8 in the furnace.

In the present embodiment, in order to circulate and supply clean hot air to the blow-out duct 8, the heating device 10 includes a filter 11, a heater (a heat exchanger 12, a burner) in addition to the circulation fan 14 and the airtight casing 21. 13, an indirect circulation fan 15). And the heating device 1
Reference numeral 0 denotes a filter 11 and a heater (1
2, 13) and the circulation fan 14
It is formed in a unit type connected in the hot air circulation passage 22 inside. The airtight casing 21 has a portion 22a upstream of the heater (12, 13) of the hot air circulation passage 22 directly connected to the exhaust port 4 opened in the side wall of the furnace body, and the heater of the hot air circulation passage 22 ( 12, 13) The downstream portion 22b is attached to the furnace body side wall so as to be directly connected to the air supply port 3 opened in the furnace body side wall.

Next, the operation will be described.

The hot air in the furnace body is exhausted by the exhaust duct 9 in the furnace body 1.
And the hot air circulation passage 22 in the airtight casing 21 by the circulation fan 14 of the heating device 10 from the exhaust port 4.
After being sucked and introduced into the furnace and heated by the heaters (12, 13, 15), it is directly circulated from the air supply port 3 on the side wall of the furnace to the blow duct 8 in the furnace. The hot air circulated and supplied to the blow duct 8 is blown out from the blow outlet 8e to heat the work W.

As described above, the furnace body 1 (the exhaust port 4 and the air supply port 3) and the heating device 10 (the airtight casing 21) are directly connected to each other, and a suction duct and a discharge duct are provided therebetween as in the conventional case. This eliminates the need for troublesome and troublesome duct connection work (therefore, the work of covering the duct with a heat insulating material is not necessary).

Further, the heating device 10 includes the airtight casing 2.
Since the unit is formed by using the unit 1, it is not necessary to perform troublesome assembly and adjustment work at the assembly site. Further, since the heating device is integrally attached to the furnace body side wall, the size can be easily reduced. Therefore, it is easy to assemble and effective use of the surrounding space can be achieved.

Thus, according to this embodiment, the heating device 10 is formed in a unit type in which the components are connected in each hot air circulation passage 22 in the airtight casing 21, and each hot air The upstream portion 22a of the heater in the circulation passage 22 is directly connected to the exhaust port 4 opened in the furnace body side wall, and the air supply in which the downstream portion 22b of the heater of the hot air circulation passage 22 is opened in the furnace body side wall. Since it is configured to be directly connected to the opening 3, the size can be reduced and the assembling becomes easy.

Further, since the heating device 10 is integrally mounted on the side wall of the furnace body, the space around the furnace body 1 can be effectively used. Further, cost can be reduced.

(Second Embodiment) FIG. 4 is a plan view showing a main part of a second embodiment of the present invention, FIG. 5 is a side view of the same, and FIG. 6 is a partially cutaway perspective view showing the entire structure. is there.

The baking / drying furnace according to the present embodiment includes a furnace body 1, an outlet duct 8, an exhaust duct 9, and a heating device 10 '.

The same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted or simplified.

In this embodiment, the blowing duct 8 is connected to the heating device 1 through an air supply port 6 opened in the furnace body ceiling wall 5.
0 'communicates with the hot air circulation passage 22' of the airtight casing 21 '.

The exhaust duct 9 communicates with a hot air circulation passage 22 'in an airtight casing 21' of a heating device 10 'through an exhaust port 7 opened in the furnace ceiling wall 5.

The heating device 10 'includes a filter 11,
Circulating fan 14, heater (heat exchanger 12, burner 13,
It includes an indirect circulation fan 15) and an airtight casing 21 '. The heating device 10 ′ includes a filter 11, a circulation fan 14, a heater (1
2, 13, 15) are formed in a unit type that is continuously connected in a hot air circulation passage 22 'in an airtight casing 21'.
The airtight casing 21 'is connected to the hot air circulation passage 22'.
The upstream portion 22a 'of the heater is directly connected to the exhaust port 7 opened in the furnace body ceiling wall 5, and the downstream portion 22b' of the heater of the hot air circulation passage 22 'is opened in the furnace body ceiling wall. Is attached to the furnace body ceiling wall 5 so as to be directly connected to the supplied air supply port 6.

As described above, the components of the heating device 10 ′ (the circulation fan 14, the heater, etc.)
1 ′, the hot air circulation passage 22 ′ is connected directly to the exhaust port 7 and the air supply port 6 of the furnace body ceiling wall 5. There is no need to perform insulation work. Further, the heating device 10 'in which the constituent parts are unitized via an airtight casing 21'.
Can be completed by simply transporting the assembly to a predetermined location on the ceiling wall 5 of the furnace body, thereby eliminating the need for complicated assembly and adjustment work at the assembly site.
Further, since the heating device 10 '(airtight casing 22') is integrally attached to the furnace body ceiling wall 5, the size can be reduced.

Thus, according to the second embodiment, the heating device 10 'is formed in a unit type in which the components are connected in the hot air circulation passage 22' in the airtight casing 21 '. The portion 22a 'on the upstream side of the heater of the hot air circulation passage 22' of 21 'is directly connected to the exhaust port 7 opened in the furnace body side wall and the hot air circulation passage 2'
Since the downstream portion 22b 'of the heater 2' is directly connected to the air supply port 6 opened in the side wall of the furnace body, downsizing can be achieved and assembly is facilitated.

In particular, in the present baking and drying furnace, the heating device 10 'is attached to the ceiling wall 5 of the furnace body 1, which is generally a dead space, so that the space around the furnace body 1 is more effectively used. be able to.

[0041]

According to the first aspect of the present invention, the heating device includes:
The components are formed in a unit type connected in the hot air circulation passage of the airtight casing, and the upstream portion of the heater of each hot air circulation passage of the airtight casing is directly connected to the exhaust port opened in the furnace body side wall. In addition, the downstream portion of the heater in the hot air circulation passage is directly connected to the air supply opening formed in the side wall of the furnace body, so that the size can be reduced.
Moreover, assembly becomes easy.

According to the second aspect of the present invention, the heating device is formed in a unit type in which the components are connected in the hot air circulation passage of the airtight casing, and the heating device is upstream of the heater in each hot air circulation passage of the airtight casing. Since the side portion was directly connected to the exhaust port opened in the furnace body ceiling wall and the portion downstream from the heater of the hot air circulation passage was directly connected to the air supply port opened in the furnace body ceiling wall, The size can be reduced and the assembling becomes easy. In addition, since the heating device is attached to the ceiling wall portion of the furnace body, which is generally a dead space, the space around the furnace body can be more effectively used.

[Brief description of the drawings]

FIG. 1 is a diagram showing a heating device as a main part of a first embodiment of the present invention.

FIG. 2 is a diagram showing a positional relationship between a furnace body and a heating device according to the first embodiment.

FIG. 3 is a partially cutaway perspective view showing the entire configuration of the first embodiment.

FIG. 4 is a plan view of a heating device which is a main part of a second embodiment of the present invention.

FIG. 5 is a side view of a heating device according to a second embodiment.

FIG. 6 is a partially cutaway perspective view showing the entire configuration of the second embodiment.

FIG. 7 is a diagram showing a schematic configuration of a conventional quenching and drying furnace.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Furnace body 2 Side wall 3 Inlet 4 Exhaust port 5 Ceiling wall 6 Inlet port 7 Exhaust port 10, 10 'Heating device 12 Heat exchanger (heater) 13 Burner (heater) 14 Circulation fan 21, 21' Airtight casing

Claims (2)

(57) [Scope of request for utility model registration] 1. A baking / drying furnace for circulating hot air in a furnace through a heating device comprising components including a heater and a circulating fan, wherein the heating device is disposed in a hot air circulation passage of an airtight casing. The hot air circulation passage of the hermetic casing is formed in a unit type, and the upstream portion of the heater in the airtight casing is directly connected to the exhaust port opened in the furnace body side wall, and the downstream portion of the heater in the hot air circulation passage is connected. Characterized by being directly connected to an air supply opening formed in the side wall of the furnace body. 2. A baking / drying furnace for circulating hot air in a furnace through a heating device comprising components including a heater and a circulating fan, wherein the heating device is disposed in a hot air circulation passage of an airtight casing. It is formed in a continuous unit type, and the portion upstream of the heater of the hot air circulation passage of the hermetic casing is directly connected to the exhaust port opened in the furnace body ceiling wall and downstream of the heater of the hot air circulation passage. A baking / drying oven characterized in that the part is directly connected to an air supply opening formed in the furnace body ceiling wall.