KR100767806B1 - Furnace, cooling furnace and roller hearth type annealing furnace - Google Patents

Abstract

The present invention relates to a heating furnace, a cooling furnace and a roller hearth type annealing furnace having a convex protrusion, and more particularly, a heating furnace and a cooling furnace having a convex protrusion which maximizes thermal efficiency by allowing heat transfer to occur easily inside. And a roller hearth type annealing furnace.

According to the present invention, the heat efficiency is maximized by allowing the heat flow to occur easily by smoothly flowing the air in the heating furnace, the cooling furnace, and the annealing furnace.

In other words, since more work can be performed even if the same raw material is added, it creates an effect of saving energy consumed for heating and cooling.

Furthermore, since heat transfer may occur more easily than in the related art, there is an advantage in that the time consumed for heating or cooling the heated object or the cooled object is also reduced.

Description

Heating furnace, cooling furnace and roller hearth type Annealing furnace with transforming protrusion}

1 is a cross-sectional view of a heating furnace provided with a convex protrusion according to an embodiment of the present invention,

2 is a perspective view of a heating bell according to an embodiment of the present invention;

3 is a cross-sectional view of a cooling furnace having a current deflecting protrusion according to an embodiment of the present invention;

Figure 4 is a cross-sectional view of the roller hearth type annealing furnace provided with a roller hearth type convex protrusion according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10, 10a, 10b: coil 110: heating furnace housing

120: regenerative burner 130: heating bell

131: left heating wall surface 132: right heating wall surface

133: the first current convection protrusion 140: heating air circulation

142: air outlet 144: heating air circulation fan

146: Dispersion Cap 150: Furnace Vortex Prevention Guide

210: cooling furnace housing 220: cooler

230: cooling bell 231: left cooling wall surface

232: right cooling wall surface 233: first current flow projection of the cooling furnace

240: cooling circulation fan 242: air intake

244 Cooling air circulation fan 250 Cooling furnace vortex prevention guide

260: collection guide 330: transfer unit

332: roller 334: cylinder

336: second deflection protrusion

The present invention relates to a heating furnace, a cooling furnace and a roller hearth type annealing furnace having a convex protrusion, and more particularly, a heating furnace and a cooling furnace having a convex protrusion which maximizes thermal efficiency by allowing heat transfer to occur easily inside. And a roller hearth type annealing furnace.

A heating furnace, a cooling furnace, or annealing furnace is a device for performing a heat treatment or cooling treatment on a specific object, and such treatment is a key factor in how efficiently heat transfer can occur.

At this time, the heat transfer is conducted by conduction, convection, radiation as is well known, but in the conventional heating furnace, cooling furnace or annealing furnace, convection, that is, heat transfer by the flow of internal air is not optimized.

For this reason, conventionally designed furnaces, cooling furnaces or annealing furnaces operated with lower thermal efficiency than the input energy.

The present invention was devised to solve the above-mentioned problems, and a heating furnace and a cooling furnace and a roller hearth type annealing furnace having a convex protrusion which maximizes thermal efficiency by allowing the heat transfer to occur easily by smoothing the flow of internal air. The purpose is to provide.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. In addition, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

Heating furnace provided with a current-convex protrusion of the present invention for achieving the above object, a heating furnace for forming a predetermined space therein; A regenerative burner provided at an upper portion and a lower portion of the furnace housing to discharge heat; A heating bell provided between the upper and lower regenerative burners inside the heating housing to transfer heat to the heated object; It is provided on the top of the heating bell and comprises at least one heating air circulation for circulating the air in the heating housing, characterized in that the heating furnace first current flow projection (變 流) projections are formed inside the heating bell.

At this time, it is preferable that the vortex prevention guide is provided on the inner upper and lower edges of the furnace housing.

In addition, the heating bell is composed of a left heating wall surface and a right heating wall surface forming a predetermined space on which the object to be heated can be mounted, and an inner distance between the left heating wall surface and the right heating wall surface as the upper end thereof faces upward. The farther away, the lower the lower portion toward the bottom may be the inner distance between the left heating wall surface and the right heating wall surface.

Further, the left heating wall surface and the right heating wall surface of the upper outer distance is shorter than the lower outer distance, it is preferable that the outer surface is formed curved.

In addition, the heating air circulation portion is a circular air outlet through which the air of the heating bell is discharged; And a heating air circulation fan provided inside the air outlet to circulate air in the heating housing, and a dispersion cap having a semicircular cross section may be provided at a front end of the heating air circulation fan.

On the other hand, the cooling furnace provided with a current-convex protrusion of the present invention, the cooling furnace housing to form a predetermined space therein; A cooler provided at an inner upper portion of the cooling furnace housing to radiate cold air; A cooling bell provided at a lower side of the inner cooler of the cooling furnace housing and configured to include a left cooling wall surface and a right cooling wall surface to form a predetermined space in which the cooled object can be mounted; It is provided on the top of the cooling bell and comprises at least one cooling air circulation unit for circulating the air in the cooling furnace housing, characterized in that the cooling passage first current flow (變 流) projections are formed inside the cooling bell.

At this time, the ring-shaped collector guide is provided at the lower portion of the cooling air circulation, and it is preferable that the inner diameter of the collector guide becomes narrower toward the lower end.

And a roller hearth type annealing furnace having a current-convex protrusion of the present invention is composed of a plurality of rollers conveying unit for supplying a coil for the annealing process; A heating furnace housing forming a predetermined space therein, a regenerative burner provided at the upper and lower inner sides of the furnace housing for dissipating heat, and provided between the upper and lower regenerative burners inside the heating housing and the coil can be mounted thereon. At least one heating bell which is composed of a left heating wall surface and a right heating wall surface to form a predetermined space to transfer heat to the coil supplied through the transfer unit, the one or more provided on the heating bell to circulate air in the heating housing At least one heating furnace comprising a heated air circulation unit; And a cooling furnace housing forming a predetermined space therein, a cooler provided at an inner upper portion of the cooling furnace housing to dissipate cold air, and a lower portion of the cooling furnace housing inner cooler to form a predetermined space in which a coil can be mounted. It comprises a left side cooling wall surface and the right side cooling wall surface cooling ring for supplying the cold air to the coil supplied through the conveying portion, one or more cooling air circulation portion provided on the cooling bell housing to circulate the air in the cooling furnace housing It includes at least one cooling furnace, characterized in that the transfer unit is provided with a cylinder penetrating the inner space of the coil, the outer surface of the cylinder is characterized in that the second deflection projection is formed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to explain their invention in the best way. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

First, referring to Figures 1 and 2 will be described a heating furnace provided with a convex protrusion according to an embodiment of the present invention. 1 is a cross-sectional view of a heating furnace provided with a convex protrusion according to an embodiment of the present invention. As shown in FIG. 1, the heating furnace 100 including the current convex protrusion according to the exemplary embodiment of the present invention includes a heating furnace housing 110, a regenerative burner 120, a heating bell 130, and a heating air circulation unit ( 140).

The furnace housing 110 forms a predetermined space therein to allow the heated object to be placed and heated.

Here, it is preferable that the furnace housing 110 forms a space sufficiently larger than the object to be heated (coil 10a in FIG. 1) so that internal air can easily cause convection, as shown in FIG. 1. Furthermore, it is more preferable that it is formed of a member having heat resistance so that abnormality or failure does not occur due to heat generated inside.

The regenerative burner 120 is provided at the upper and lower inner sides of the furnace housing 110 to heat the heated object 10a by releasing heat.

In addition, such a regenerative burner 120 is preferably provided with a plurality of regenerative burners 120 in the furnace housing 110 at regular intervals in order to allow the temperature of the heated object 10a to be uniformly raised. Do.

The heating bell 130 is provided between the upper regenerative burner 121 and the lower regenerative burner 122 to transfer heat to the heated object 10.

The heating bell 130 is preferably composed of the left heating wall surface 131 and the right heating wall surface 132 to form a sufficient space for the object to be heated (10a) in the center.

In addition, the heating bell 130 has an inner distance between the left heating wall surface 131 and the right heating wall surface 132 as the end of the upper end toward the top, and the left heating wall surface (the lower end toward the bottom) It is preferable that the inner distance of the 131 and the right heating wall surface 132 is formed to be far.

Through this structure, the heating bell 130 can more easily inhale the air sucked through the lower part while the convection of the internal air as shown in FIG. 1 occurs, and distributes the air discharged through the upper part more widely. This makes it possible to evenly convection the entire air inside.

Further, the left heating wall surface 131 and the right heating wall surface 132 is formed in the outer distance of the upper is shorter than the outer distance of the lower, it is more preferable that the outer surface is curved.

Due to the curved surface, the air of the furnace housing 110 may flow more smoothly.

In addition, the first current convex protrusion 133 may be formed inside the left heating wall surface 131 and the right heating wall surface 132 as shown in FIG. 1.

In this heating furnace, the first current convex protrusion 133 not only increases the internal surface area of the heating bell 130 but also air circulated in the heating bell 130 collides with the first furnace convex protrusion 133 to be heated. To be supplied to the (10a) side.

Therefore, it is possible to further maximize the thermal efficiency of the heating bell 130.

The heating air circulation unit 140 is provided at the upper portion of the heating bell 130 to circulate air in the heating housing 110.

The heating air circulating unit 140 is composed of a circular air outlet 144 for discharging the air inside the heating bell 130 to the outside and a heating air circulation fan 142 provided inside the air outlet 144. As shown in FIG. 1, the air may move from the lower portion of the heating bell 130 to the upper portion.

At this time, the heating air circulation unit 140 may operate to move the air from the top to the bottom of the heating bell 130, as well as a plurality of heating furnace 100 is provided for each heating process The heating air circulation unit provided in the furnace is preferably operated in a staggered direction (up-down-> down-up-> up-down) to evenly heat the upper and lower surfaces of the object to be heated.

In addition, it is more preferable that the dispersing cap 146 having a semicircular cross section is provided at a front end of the heating air circulation fan 144 in a direction in which the heating air circulation unit 140 is in contact with the air sucked therein.

The dispersing cap 146 is configured such that the air moving to the heating air circulation fan 142 side can be easily dispersed to the heating air circulation fan 142 blade side, the cross section is not only semi-circular but also inverted triangular, etc. Other shapes can also be implemented.

Figure 2 is a perspective view of a heating bell according to a preferred embodiment of the present invention. As shown in FIG. 2, the heating bell 130 according to the preferred embodiment of the present invention tunnels to the left heating wall surface 131 and the right heating wall surface 132 so that the heated object 10a can be introduced or injected. Is formed as, one or more heating air circulation 140 is provided on the top.

Vortex prevention guide 150 is provided on the inner upper and lower edges of the furnace housing 110.

The vortex prevention guide 150 prevents eddy currents that cause vortices (ie, local abnormal flows) from occurring at the corners while air inside the furnace housing 110 causes convection.

Therefore, the heating furnace 100 according to the present invention can maximize the thermal efficiency of the internal air of the furnace housing 110 can smoothly convection as a whole.

Next, with reference to Figure 3 will be described a cooling furnace having a convex protrusion according to an embodiment of the present invention. 3 is a cross-sectional view of a cooling furnace having a current deflecting protrusion according to an exemplary embodiment of the present invention. As shown in FIG. 3, the cooling furnace 200 having the current deflecting protrusion according to the exemplary embodiment of the present invention includes a cooling furnace housing 210, a cooler 220, a cooling bell 230, and a cooling air circulation unit 240. ).

The cooling furnace housing 210 forms a predetermined space therein to allow the cooled object to be placed and cooled.

Here, the cooling furnace housing 210 preferably forms a space larger than the object to be cooled (coil 10b in FIG. 2) so that the internal air can easily cause convection similarly to the heating furnace housing 110. Moreover, it is more preferable that it is formed with the member which has cold resistance so that abnormality or failure may not arise due to cold air which generate | occur | produces inside.

The cooler 220 is provided on the inner upper portion of the cooling furnace housing 210 to absorb heat to radiate cold air to cool the object to be cooled 10b.

Thus, the cooler 220 is preferably provided on the inner upper portion of the cooling furnace housing 210 in consideration of the rising of the hot air.

In addition, the cooler 220 is a plurality of coolers 220 in the cooling furnace housing 210 so that the temperature of the cooled object 10b can be uniformly lowered similarly to the regenerative burner 120. It is preferred to be provided with.

The cooling bell 230 is provided at the lower portion of the cooler 221 to transfer cold air to the object to be cooled 10b.

The cooling bell 230 is preferably composed of a left side cooling wall surface 231 and a right side cooling wall surface 232 to form a sufficient space for the object to be cooled (10b) in the center.

In addition, the cooling bell 230, the inner side of the left cooling wall surface 231 and the right cooling wall surface 232 is farther away, as the upper end of the cooling bell 230 toward the top, the lower end of the lower portion It is preferable that the inner distance between the left side cooling wall surface 231 and the right side cooling wall surface 232 becomes farther toward.

The cooling air circulation unit 240 is provided at the upper portion of the cooling bell 230 to circulate air in the cooling furnace housing 210.

At this time, the cooling air circulation unit 240, as shown in Figure 3, so that the air moves through the air inlet 242 and the cooling air circulation fan 244 to move from the top of the cooling bell 230 to the bottom As in the case of the heating furnace 100, a plurality of cooling furnaces 200 are provided, and when performing the cooling process, it is preferable to operate the cooling air circulation units provided in each cooling furnace in a staggered direction.

In addition, the lower portion of the cooling air circulation unit 240, as shown in Figure 3 is more preferably provided with a ring-shaped collector guide 260 that narrows toward the lower end.

The collection guide 260 serves to collect the air moved downward by the cooling air circulation 240 to increase the cooling effect by the flow of air.

In addition, a cooling furnace first current convex protrusion 233 may be formed inside the cooling bell 230 similarly to a heating furnace according to an exemplary embodiment of the present invention.

The cooling furnace first deflection protrusion 233 used in the cooling furnace according to the preferred embodiment of the present invention not only increases the internal surface area of the cooling bell 230 similarly to the heating furnace first deflection protrusion 133, The air circulating in the cooling bell 230 impinges on the cooling furnace first current convex protrusion 233 to be supplied to the object to be cooled (10b).

The vortex prevention guide 250 is provided at the inner upper and lower edges of the cooling furnace housing 110.

The vortex prevention guide 250 prevents the vortices from occurring at the corners while the air inside the cooling furnace housing 210 causes convection.

Hereinafter, with reference to Figure 4 will be described a roller hearth type annealing furnace according to an embodiment of the present invention. In the description, the same reference numerals as in FIGS. 1 to 3 refer to the same members performing the same functions.

4 is a cross-sectional view of the annealing furnace 300 having the current convex protrusion according to an embodiment of the present invention. As shown in FIG. 4, the annealing furnace 300 according to an exemplary embodiment of the present invention includes one or more heating furnaces 100, one or more cooling furnaces 200, and a transfer unit 330.

The transfer unit 330 is composed of one or more rollers 332 to sequentially supply the coil 10 to be subjected to annealing in the heating furnace 100 and the cooling furnace 200.

In addition, it is desirable that the coil can be supplied to cross the forward and reverse directions to repeat the heating and cooling according to the designer's intended annealing process.

In the annealing furnace 300 of the present invention, the coil 10 is moved through the transfer unit 330 and heated and cooled by the heating furnace 100 and the cooling furnace 200, thereby performing annealing.

At this time, the transfer unit 330 is preferably provided with a cylinder 334 penetrating the coil (10a, 10b) as shown in FIG.

The cylinder 334 fills the inner space of the center of the coil 10 to reduce the cross-sectional area to increase the air flow rate, and consequently, the heat transfer in the inner space of the coil 10 is improved by the cylinder 334. .

In addition, in the present invention, the second deflection protrusion 336 may be formed on the outer surface of the cylinder 334.

Like the first current dispersing protrusions 133 and 233, the second current dispersing protrusion 336 increases the surface area of the cylinder and allows the air to be circulated to be supplied to the coil 10 side.

In this case, the first current convex protrusions 133 and 233 and the second current convex protrusion 336 may be provided in a triangular shape as shown in FIGS. 1 to 3, but are not necessarily limited thereto. It can be changed as many by those skilled in the art.

On the other hand, in the case of using a plurality of heating furnace 100 and a plurality of cooling furnaces 200, the roller-haze type annealing furnace 300 with a convex protrusion according to an embodiment of the present invention each heating furnace and It is also possible to evenly heat or cool the upper and lower surfaces of the coil 10 by allowing the heating air circulation section and the cooling air circulation section provided in the cooling furnace to operate in a staggered direction.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

According to the present invention, the heat efficiency is maximized by allowing the heat flow to occur easily by smoothly flowing the air in the heating furnace, the cooling furnace, and the annealing furnace.

In other words, since more work can be performed even if the same raw material is added, it creates an effect of saving energy consumed for heating and cooling.

Furthermore, since heat transfer may occur more easily than in the related art, there is an advantage in that the time consumed for heating or cooling the heated object or the cooled object is also reduced.

Claims (8)

Heating furnace housing to form a predetermined space therein; A regenerative burner provided at an upper portion and a lower portion of the furnace housing to discharge heat; A heating bell provided between the upper and lower regenerative burners inside the heating housing to transfer heat to the heated object; Is provided at the top of the heating bell and includes at least one heating air circulation for circulating the air in the furnace housing, A heating furnace having a convex protrusion, characterized in that a heating furnace first flow convex protrusion is formed inside the heating bell. According to claim 1, wherein the inner upper and lower edges of the furnace housing, Furnace provided with a convection protrusion, characterized in that the vortex prevention guide is provided. The method of claim 1, wherein the heating bell, It consists of a left heating wall surface and a right heating wall surface forming a predetermined space in which the heated object can be mounted, As the upper end is directed upward, the inner distance between the left heating wall surface and the right heating wall surface is farther away, And a lower end portion toward the lower side, wherein the inner distance between the left heating wall surface and the right heating wall surface is farther away. According to claim 3, The left heating wall surface and the right heating wall surface, The outer distance at the top is shorter than the outer distance at the bottom, Furnace provided with a convex protrusion, characterized in that the outer surface is curved. The method of claim 1, wherein the heated air circulation unit, A circular air outlet through which the air of the heating bell is discharged; And A heating air circulation fan provided inside the air outlet to circulate air in the heating housing; The front end of the heating air circulation fan is a heating furnace provided with a convex protrusion, characterized in that the cross section is provided with a dispersion cap having a semi-circular shape. Cooling furnace housing to form a predetermined space therein; A cooler provided at an inner upper portion of the cooling furnace housing to radiate cold air; A cooling bell provided at a lower side of the inner cooler of the cooling furnace housing and configured to include a left cooling wall surface and a right cooling wall surface to form a predetermined space in which the cooled object can be mounted; Is provided at the top of the cooling bell and includes one or more cooling air circulation for circulating the air in the cooling furnace housing, Cooling furnace having a current-convex projection, characterized in that the cooling furnace first current flow projection is formed inside the cooling bell. The method of claim 6, wherein the lower portion of the cooling air circulation, Ring-shaped picking guide is provided, Cooling furnace provided with a convex protrusion, characterized in that the inner diameter of the collector guide becomes narrower toward the lower end. Conveying unit consisting of a plurality of rollers for supplying a coil for the annealing process; A heating furnace housing forming a predetermined space therein, a regenerative burner provided at the upper and lower inner sides of the furnace housing for dissipating heat, and provided between the upper and lower regenerative burners inside the heating housing and the coil can be mounted thereon. At least one heating bell which is composed of a left heating wall surface and a right heating wall surface to form a predetermined space to transfer heat to the coil supplied through the transfer unit, the one or more provided on the heating bell to circulate air in the heating housing At least one heating furnace comprising a heated air circulation unit; And A cooling furnace housing forming a predetermined space therein, a cooler provided at an inner upper portion of the cooling furnace housing to dissipate cold air, and a left side of the cooling furnace housing provided at a lower portion of the cooling furnace housing to form a predetermined space in which a coil can be mounted. A cooling bell which is composed of a cooling wall surface and a right cooling wall surface to supply cold air to the coil supplied through the conveying unit, and includes one or more cooling air circulation units provided at an upper portion of the cooling ring to circulate air in the cooling furnace housing. Including more than one cooling furnace, The transfer unit is provided with a cylinder penetrating the inner space of the coil, The roller-haze type annealing furnace provided with the flow | flux protrusion which is formed in the outer surface of the said cylinder by the 2nd flow-curve process.

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