KR101658877B1 - Diffussor for Annealing Furnace - Google Patents

Diffussor for Annealing Furnace Download PDF

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Publication number
KR101658877B1
KR101658877B1 KR1020160076543A KR20160076543A KR101658877B1 KR 101658877 B1 KR101658877 B1 KR 101658877B1 KR 1020160076543 A KR1020160076543 A KR 1020160076543A KR 20160076543 A KR20160076543 A KR 20160076543A KR 101658877 B1 KR101658877 B1 KR 101658877B1
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KR
South Korea
Prior art keywords
unit
plate
upper plate
radial
hole
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KR1020160076543A
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Korean (ko)
Inventor
조재희
Original Assignee
(주) 광암스틸
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Priority to KR1020160076543A priority Critical patent/KR101658877B1/en
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Publication of KR101658877B1 publication Critical patent/KR101658877B1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means
    • F27D2007/045—Fans

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)

Abstract

The present invention relates to a diffuser for an annealing furnace capable of uniformly discharging air, obtaining improved durability, and easy manufacture by having an upper plate with radial discharge holes and a lower plate with a fan at the center which are vertically coupled. The diffuser for an annealing furnace includes an upper plate unit and a lower plate unit. The upper plate unit includes: an upper plate body on which a bundle of wires is loaded and a discharge hole unit formed in the upper plate body. The discharge hole unit is composed of multiple unit holes formed in the upper plate body to be separately and forms multiple hole groups having a group of the unit holes. The hole groups are radially arranged around the center of the upper plate body. The lower plate unit includes a lower plate body and a lower radial plate formed on a top surface of the lower plate body. The lower radial plate is composed of multiple unit lower radial plates radially arranged around the center of the lower plate body. The unit lower radial plates are arranged between the hole groups when the upper plate unit and the lower plate unit are vertically coupled, thereby forming a lateral wall of an unit passage.

Description

[0001] Diffuser for Annealing Furnace [0002]

The present invention relates to a diffuser for an annealing furnace, and more particularly, to a diffuser for an annealing furnace, and more particularly, to a diffuser for an annealing furnace, and more particularly to a diffuser for an annealing furnace which comprises a top plate on which a radial discharge hole is formed, To a passive diffuser.

Annealing is a heat treatment in which the steel is heated and maintained at a suitable temperature and then slowly cooled. The annealing is usually carried out to strengthen the ductility and toughness of the steel strip or wire (hereinafter referred to as "wire bundle"), There is a formula and a batch formula.

1, the batch type annealing furnace has a double structure in which a chamber 2 is disposed inside a vertical type cover 1. A plurality of burners 3 are provided in the cover 1 for internal heating (Not shown) is provided on the inner peripheral surface.

In addition, a wire bundle is stacked in the chamber 2 to perform annealing, and the heat of the burner 3 and the hot wire is prevented from being directly applied to the wire bundle, and the diffuser 4 and the fan The air is injected into the chamber 2 through the opening 5 so that heat is uniformly injected into the wire bundle by the circulation of the air or the protective gas such as hydrogen or nitrogen is prevented from oxidizing the injection wire, .

The structure of the general diffuser is such that the air or the protection gas (hereinafter referred to as "air") sucked by the fan 5 installed at the center is dispersively discharged again into the space of the upper chamber 2, And a plurality of side walls are radially arranged in the diffuser in order to form an air flow path connecting the discharge hole and the fan 5.

An expensive diffuser having such a complicated structure and usually made to order is repeatedly subjected to thermal expansion and contraction across a high temperature and a normal temperature reaching 1000 DEG C while supporting a wire bundle of a heavy load, There is a problem that needs to be replaced frequently.

KR 20-0450067 Y1 2010.08.27.

A problem to be solved by the present invention is to provide a diffuser for an annealing furnace in which air is uniformly discharged, is easy to manufacture, has excellent load bearing capacity, and is prevented from being deformed even when thermal expansion and contraction are repeated.

According to an aspect of the present invention, there is provided an annealing furnace diffuser comprising an upper plate body on which wire bundles are stacked and a discharge hole unit formed on the upper plate body, wherein the discharge hole unit includes a plurality of An upper plate portion formed of a unit hole and having a plurality of hole groups each consisting of a group of unit holes and the hole groups radially arranged with respect to the center of the upper plate body; And a lower radial plate provided on the upper surface of the lower plate main body, and the lower radial plate includes a lower plate portion composed of a plurality of unit lower radial plates arranged radially with respect to the center of the lower plate main body, And when the upper plate part and the lower plate part are vertically engaged, the unit lower radial plate is disposed between the hole groups to form sidewalls of the unit flow path.

The diffuser for an annealing furnace according to the present invention may further comprise an upper radial plate on a rear surface of the upper plate main body and the upper radial plate comprises a plurality of unit upper radial plates arranged radially with respect to the center of the upper plate main body, And the unit upper radial plate is disposed alternately with the unit lower radial plate when the upper plate and the lower plate are engaged with each other to construct a side wall of the unit flow path.

The diffuser for an annealing furnace according to the present invention may further comprise a guide plate on a rear surface of the upper plate body, and the guide plate is composed of a plurality of unit guide plates, one end of which is integrally joined to the side surface of the unit upper radial plate, A plurality of plate groups are arranged radially with respect to the center of the upper plate body, a unit guide plate of each plate group is disposed below the unit hole boundary line of each hole group, Wherein the unit guide plate in the upper plate is increased in the vertical direction as the distance from the center of the upper plate main body increases.

According to the diffuser for an annealing furnace of the present invention, a plurality of hole groups made up of a plurality of unit holes, each of which is a group of unit holes, are formed, and air is uniformly discharged through discharge hole units in which the hole groups are arranged radially, And the unit upper radial plate and the unit lower radial plate corresponding to the sidewalls of the flow path are dispersed in the upper plate main body and the lower plate main body, thereby improving the manufacturability of the diffuser.

According to the diffuser for annealing furnaces of the present invention, since the unit upper radial plate and the unit lower radial plate, which are dispersed in the upper plate main body and the lower plate main body, and the unit guide radial plate, The durability of the diffuser is improved because the load bearing capacity is improved and the deformation is suppressed even when thermal expansion and contraction are repeated.

1 is a sectional view showing a conventional batch annealing furnace.
2 is an exploded perspective view showing a diffuser for an annealing furnace according to the present invention.
3 is a perspective view showing a diffuser for an annealing furnace according to the present invention.
4 is a cross-sectional perspective view showing a diffuser for an annealing furnace according to the present invention.
5 is a schematic diagram illustrating a process in which air is dispersed and discharged by a diffuser for an annealing furnace according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is an exploded perspective view showing a diffuser for an annealing furnace according to the present invention, and FIG. 3 is a perspective view showing a diffuser for an annealing furnace according to the present invention.

2 and 3, the present invention relates to an air conditioning system for an internal combustion engine, which comprises an upper plate 10 disposed on a bottom surface of an annealing furnace, and a plurality of air flow paths The lower radial plate 23 of the upper plate portion 10 and the upper radial plate 17 of the upper plate portion 20 constitute an air flow of the diffuser 20 through the lower radial plate 23 of the lower plate portion 20, The discharge is uniform and the durability is improved.

The upper plate 10 is configured to supply air to a bundle of wires stacked on the upper plate 10. The upper plate 10 includes a disk-shaped upper plate body 11, A discharge hole unit 15 formed in the upper plate body 11, an upper radius plate 17 formed on the rear surface of the upper plate body 11, And a guide plate 19 crossing the plate 17 and formed on the back surface of the upper plate body 11. [

A plurality of wire bundles are radially arranged on the upper surface of the upper plate body 11 so that the center of the bundle of wires is formed with a through hole B as shown in FIG. The air flows downward from the through hole B by the suction action of the fan 5 installed at the lower part and flows into the inflow hole 13. [ The air passing through the fan 5 is introduced into the unit flow path f and then discharged upward by the guide plate 19 so that the air inside the chamber 2 flows upward in the space excluding the through hole B, .

The discharge hole unit 15 is composed of a plurality of unit holes 15a dispersedly formed in the upper plate body 11 so that the air introduced into the unit flow path f can be uniformly discharged above the upper plate body 11 A plurality of hole groups w made up of a group of unit holes 15a are formed and the hole groups w are radially arranged around the inlet holes 13. [

The upper radial plate 17 is composed of a plurality of unit upper radial plates 17a arranged radially with respect to the inlet hole 13. The upper and lower radial plates 17, The plate 17a becomes the side wall of the unit flow channel f together with the unit lower radial plate 23a of the lower radial plate 23 to be described later.

That is, the unit upper radial plate 17a and the unit lower radial plate 23a are alternately arranged under the boundary line r of the hole group w when the upper plate 10 and the lower plate 20 are vertically coupled to each other ) To construct a side wall of the unit flow path (f).

The guide plate 19 is also formed of a plurality of unit guide plates 19a and a plate group p consisting of a total of four unit guide plates 19a is formed in each unit upper radius plate 17a, And each of the plate groups p is arranged radially with respect to the inlet hole 13 and the unit guide plate 19a of each plate group p is connected to the unit hole 15a of the hole group w &thetas; ', &thetas; "

Each unit guide plate 19a is so formed that the upper and lower lengths h 'and h "are moved downward from the inlet hole 13 toward the outer side so that the air is uniformly discharged into the unit holes 15a in the hole group w .

Specifically, as shown in FIG. 5, the first upper layer portion c 'of the air flowing through the unit flow channel f is guided to the first unit guide plate 19a' The air is introduced into the holes 15a 'and the air is homogenized in such a manner that the second upper portion c "of the air is guided to the second unit guide plate 19a" and flows into the second unit holes 15a ".

In this case, the air impinging on each unit guide plate 19a undergoes turbulent behavior, so that air infiltration to the inside of the wire bundle increases, and a uniform heat treatment is performed.

Each of the unit guide plates 19a in the plate group p is integrally joined to the side surface of the unit upper radial plate 17a so as to have a branch shape so that the unit upper radial plate 17a is fixed to the upper plate body The unit guide plate 19a suppresses radial thermal deformation of the upper plate body 11 in the arcuate direction.

The other end of the unit guide plate 19a is spaced apart from the end of the adjacent unit guide plate 19a by a distance corresponding to the width of the unit lower radial plate 23a and the distance between the upper plate 10 and the lower plate 20 The unit lower radial plate 23a is inserted into the spacing space at the time of upper and lower coupling.

The lower plate portion 20 has a structure in which the air introduced from the through hole B by the fan 5 is guided to the unit flow path f with the fan 5 at the center, A lower radial plate 23 radially disposed on the upper surface of the lower plate main body 21 and a lower radial plate 23 formed at the center of the lower radial plate 23, And the lower radial plate 23 is composed of a plurality of unit lower radial plates 23a radially arranged around the receiving grooves 25. [

The diffuser is usually manufactured by casting or welding. Since the side wall of the unit flow path f has a radial structure with its width becoming narrower toward the central part, the manufacturing thereof is troublesome, and residual stress may occur particularly in the central part during manufacture. The wire bundle of the heavy load is subjected to thermal fatigue through the high temperature and the normal temperature while being supported by the wire bundle, so that deformation or cracking can easily occur at the center and outer periphery of the diffuser.

In the present invention, the upper radial plate 17 and the lower radial plate 23, which are the side walls forming the unit flow path f, are dispersed in the upper plate body 11 and the lower plate body 21, respectively, Can be less.

It is also possible to suppress the occurrence of residual stress and to prevent deformation and cracking of the diffuser and to prevent the radial thermal deformation and the arcuate thermal deformation of the upper plate body 11 Respectively, the durability of the diffuser is improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10:
11: Body of the upper plate
13: inlet hole
15: Discharge hole unit
17: upper radial plate
19: Guide plate
20: Lower plate part
21: Lower plate body
23: lower radial plate
25: Receiving groove

Claims (3)

And a discharge hole unit (15) formed in the upper plate body (11), wherein the discharge hole unit (15) comprises a plurality of A plurality of hole groups w made up of unit holes 15a and a plurality of unit holes 15a formed in the unit holes 15a and the hole groups w are formed in the upper plate portion 11a radially arranged with respect to the center of the upper plate body 11 10); And
The lower radial plate 23 includes a lower plate body 21 and a lower radial plate 23 provided on the upper surface of the lower plate body 21. The lower radial plate 23 has a plurality A lower plate portion 20 made up of unit lower radial plates 23a;
/ RTI >
When the upper plate portion 10 and the lower plate portion 20 are vertically engaged, the unit lower radial plate 23a is disposed between the hole groups w to form side walls of the unit flow channel f,
The upper radial plate 17 further includes a plurality of unit upper radial plates 17a arranged radially with respect to the center of the upper plate main body 11, The unit upper radial plate 17a is disposed alternately with the unit lower radial plate 23a when the upper plate 10 and the lower plate 20 are vertically engaged with each other, In addition,
A guide plate 19 is further provided on the rear surface of the upper plate main body 11. The guide plate 19 has a plurality of unit guide plates 19a and 19b which are integrally joined to one side of the unit upper radial plate 17a A plurality of plate groups p are arranged radially with respect to the center of the upper plate main body 11 and a plurality of plate groups p The unit guide plate 19a of each plate group p is disposed under the boundary line o of the unit hole 15a of each hole group w and the unit guide plate 19a in each plate group p is disposed in the upper plate body 11, And the vertical length (h) increases downward as the distance from the center of the diffuser increases.
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KR1020160076543A 2016-06-20 2016-06-20 Diffussor for Annealing Furnace KR101658877B1 (en)

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KR1020160076543A KR101658877B1 (en) 2016-06-20 2016-06-20 Diffussor for Annealing Furnace

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190062297A (en) * 2017-11-28 2019-06-05 가우츠시 엔지니어링 게엠베하 Batch furnace for annealing material and method for heat treatment of a furnace material
CN111893291A (en) * 2020-08-10 2020-11-06 江苏凯特尔节能技术有限公司 Full-hydrogen annealing device for precise sheet coiled material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01230728A (en) * 1988-03-10 1989-09-14 Nkk Corp Convection plate for cooling coil
KR200450067Y1 (en) 2007-10-17 2010-09-02 에스엠메탈(주) Diffussor segment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01230728A (en) * 1988-03-10 1989-09-14 Nkk Corp Convection plate for cooling coil
KR200450067Y1 (en) 2007-10-17 2010-09-02 에스엠메탈(주) Diffussor segment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190062297A (en) * 2017-11-28 2019-06-05 가우츠시 엔지니어링 게엠베하 Batch furnace for annealing material and method for heat treatment of a furnace material
KR102132799B1 (en) * 2017-11-28 2020-07-22 가우츠시 엔지니어링 게엠베하 Batch furnace for annealing material and method for heat treatment of a furnace material
US11060793B2 (en) 2017-11-28 2021-07-13 Gautschi Engineering Gmbh Batch furnace for annealing material and method for heat treatment of a furnace material
CN111893291A (en) * 2020-08-10 2020-11-06 江苏凯特尔节能技术有限公司 Full-hydrogen annealing device for precise sheet coiled material

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