KR200488522Y1 - Rotatable electric furnace - Google Patents

Rotatable electric furnace Download PDF

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Publication number
KR200488522Y1
KR200488522Y1 KR2020180003949U KR20180003949U KR200488522Y1 KR 200488522 Y1 KR200488522 Y1 KR 200488522Y1 KR 2020180003949 U KR2020180003949 U KR 2020180003949U KR 20180003949 U KR20180003949 U KR 20180003949U KR 200488522 Y1 KR200488522 Y1 KR 200488522Y1
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KR
South Korea
Prior art keywords
furnace body
infrared ray
infrared
dust
concave lens
Prior art date
Application number
KR2020180003949U
Other languages
Korean (ko)
Inventor
신용성
Original Assignee
신용성
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Publication date
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Priority to KR2020180003949U priority Critical patent/KR200488522Y1/en
Application granted granted Critical
Publication of KR200488522Y1 publication Critical patent/KR200488522Y1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • F27B3/065—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement tiltable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/28—Arrangement of controlling, monitoring, alarm or the like devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means, e.g. by light scattering, diffraction, holography or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust

Abstract

The present invention relates to an electric furnace, A stand having a through hole through which the furnace body is rotatably seated to support the furnace body rotatably; A rotation driving unit interlocked with the furnace body to rotate the furnace body; And a movement driving unit connected to the rotation driving unit to selectively move the rotation driving unit toward or away from the furnace body so that the refractory of the furnace can be uniformly used without local erosion to increase the number of times of use of the furnace body, Reduction in productivity and productivity can be obtained.

Description

[0001] ROTATABLE ELECTRIC FURNACE [0002]

The present invention relates to a rotatable electric furnace device, and more particularly, to a rotatable electric furnace device capable of detecting the temperature in an electric furnace to detect the state of the refractory inside the furnace body and rotating the furnace body to prevent uneven wear of the refractory. .

Generally, an electric furnace is an apparatus which heats and melts a metal or an alloy by using electric power. The electric arc is generated by energizing a high current to an electrode installed vertically in a loop for opening and closing an upper part of the electric furnace. And to dissolve the metal or alloy.

1 is a perspective view showing an electric furnace according to the prior art.

As shown in this figure, in the conventional electric furnace, a loop 2 is provided so as to be openable and closable above the furnace body 1, and three electrode rods 3, for example, are inserted into the loop 2. In the electrode rods, (Not shown).

A discharge duct 5 for discharging dust generated inside the furnace body 1 to the outside is provided at one side of the roof 2.

The inner wall of the furnace body 1 is made of a refractory (not shown) to contain dissolved molten steel.

Thus, the loops 2 are removed from the upper portion of the furnace body 1, the objects to be melted such as metal or alloys are put in the state that the inside of the furnace body is opened and then the loops are covered again, Thereby melting the object to be melted.

The furnace body 1 is fixedly placed on a stand 6, a tilting cylinder 7 is connected to the lower end of the stand, and the tilting cylinder tilts the furnace.

However, when the number of times the furnace body is used is shifted to the mid-term, the erosion rate of the refractory material inside the furnace body differs for each part. In particular, if the arc occurs only at a certain position, heat due to the arc in the furnace is distributed unevenly There is a problem that it damages only a specific part of an electric furnace.

(Patent Document 1) KR 2003-0044716 A

The main purpose of the present invention is to provide an electric furnace capable of preventing the uneven wear of the refractory by rotating the furnace body while grasping the state of the refractory inside the furnace body by sensing the temperature in the furnace.

As means for achieving the above object,

The present invention relates to a furnace body (10); A stand (20) formed with a through hole through which the furnace body is rotatably seated and rotatably supporting the furnace body; A rotation driving unit (30) interlocked with the furnace body to rotate the furnace body; A movement driving unit (40) connected to the rotation driving unit and selectively advancing / retreating the rotation driving unit toward or away from the furnace body; A stopper (50) installed on a support frame coupled with the stand to prevent relative rotation between the furnace body and the stand; A dust measuring unit 1000 installed at one end of the stand for measuring dust and outputting an alarm signal if the dust is greater than a reference value; And an alarm signal output unit 2000 electrically connected to the dust measuring unit and outputting an alarm signal to the outside according to a control signal of the dust measuring unit.

The dust measuring means may include an infrared transmitting means (A) for emitting infrared rays, a light receiving means for receiving light emitted from the infrared transmitting means and positioned to face the infrared transmitting means, (C) for controlling the input voltage of the infrared transmitting means (A) to increase when the output voltage of the infrared receiving means (B) is smaller than a set value, ); The infrared transmitting means (A) comprises: a concave lens group on which a plurality of concave lenses are mounted to limit the output of infrared rays; An infrared ray transmitting element for outputting an infrared ray close to the concave lens group; The concave lens group is disposed on one side of the concave lens group to allow the infrared ray output to be controlled. When the ambient temperature is high according to the amount of change in temperature, the concave lens group is caused to flow to the left side so that infrared rays pass through the lens having a low concave angle, A shape memory spring for controlling the infrared ray output to be lower by allowing the concave lens group to flow to the right side when the ambient temperature is low and allowing the infrared ray to pass through the lens having a high concave angle; And a fixing portion which is located at the right end of the shape memory spring and supports the movement of the shape memory spring.

Further, the infrared ray transmitting means (A) comprises: a housing for housing the shape memory spring and the fixing portion; The housing is provided at one side of the shape memory spring and is forced to inflate the shape memory spring through heat generation to move the concave lens group to the left side so that infrared rays are transmitted through a lens having a low concave angle, A heating means for inducing the temperature to be forcibly increased; And is disposed on the other side of the shape memory spring to transmit the cooling heat to forcibly contract the shape memory spring to move the concave lens group to the right side so that a lens having a high concave angle and an infrared ray are allowed to pass therethrough A thermoelectric element for inducing the infrared output to be forcibly lowered; And a transmission control unit electrically connected to the heating unit and the thermoelectric element and controlling the infrared ray output to be increased by operating the heating unit when dust is heavy and controlling the infrared ray output by operating the thermoelectric unit when the dust is small It is characterized by the constitution.

In addition, the fixing portion may include a elastic spring 4a provided inside the case to provide a biasing force in both upward and downward directions, and a resilient biasing spring 4b provided at an end of the elastic spring, And a sliding ball 4b fixed temporarily.

As described above, according to the present invention, it is possible to prevent the uneven wear of the refractory by rotating the furnace body while grasping the state of the refractory inside the furnace body by sensing the temperature in the furnace, thereby preventing the early change of the refractory and increasing the cost accordingly There is an effect that can be done.

In addition, according to the present invention, the refractory inside the furnace body can be uniformly used, so that the lifetime of the furnace body can be improved as a whole, and the number of times of use and time can be reduced to improve productivity.

1 is a perspective view showing a part of an electric furnace according to the prior art;
2 is a front view showing an electric furnace according to one embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2; FIG.
Fig. 4 is an enlarged view of B shown in Fig. 2; Fig.
5 is a view showing a tilting state of an electric furnace according to an embodiment of the present invention;
Fig. 6 is a block diagram of dust measurement means and alarm signal output section of the present invention; Fig.
7 is a conceptual diagram of infrared transmitting means and infrared receiving means constituting the dust measuring means of the present invention.
8 is a conceptual diagram for measuring dust using the infrared transmitting means and the infrared receiving means of the present invention.
Fig. 9 is a first embodiment of dust measuring means having a shape memory spring in the present invention. Fig.
10 is a second embodiment in which the heat generating means, the thermoelectric element, and the shape memory spring are provided in the present invention.
FIG. 11 is a perspective view of an embodiment of the present invention.
12 is a configuration view of a concave lens applied to the present invention;

The operation principle of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings and description. It should be understood, however, that the drawings and the following description are provided for illustrative purposes only and are not intended to limit the scope of the present invention.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. It is to be understood that the following terms are defined in consideration of functions in the present invention, and may vary depending on the user, the intention or custom of the operator, and the like. Therefore, the definition should be based on the contents of this whole design.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention and are incorporated in and constitute a part of this specification. The configuration is omitted as much as possible and the functional configuration that should be additionally provided for the present invention is mainly described.

Those skilled in the art will readily understand the functions of components that have been used in the prior art among the functional configurations not shown in the following description, The relationship between the elements and the added components for the present invention will also be clearly understood.

In order to efficiently explain the essential technical features of the present invention, the following embodiments will appropriately modify the terms so that those skilled in the art can clearly understand the present invention. However, It is by no means limited.

As a result, the technical idea of the present invention is determined by the claims, and the following examples are intended to illustrate the technical idea of the present inventive concept in a more effective manner to those skilled in the art, .

2 is a front view showing an electric furnace according to one embodiment of the present invention;

FIG. 3 is an enlarged view of FIG. 2; FIG.

Fig. 4 is an enlarged view of B shown in Fig. 2; Fig.

5 is a view showing a tilting state of an electric furnace according to an embodiment of the present invention;

Fig. 6 is a block diagram of dust measurement means and alarm signal output section of the present invention; Fig.

7 is a conceptual diagram of infrared transmitting means and infrared receiving means constituting the dust measuring means of the present invention.

8 is a conceptual diagram for measuring dust using the infrared transmitting means and the infrared receiving means of the present invention.

Fig. 9 is a first embodiment of dust measuring means having a shape memory spring in the present invention. Fig.

10 is a second embodiment in which the heat generating means, the thermoelectric element, and the shape memory spring are provided in the present invention.

FIG. 11 is a perspective view of an embodiment of the present invention.

Fig. 12 is a configuration view of a concave lens applied to the present invention,

As shown in these drawings, an electric furnace according to one embodiment of the present invention includes a furnace body 10; A stand (20) formed with a through hole (21) rotatably seated on the furnace body and rotatably supporting the furnace body; A rotation driving unit (30) interlocked with the furnace body to rotate the furnace body; And a movement driving unit 40 connected to the rotation driving unit and selectively advancing and retracting the rotation driving unit toward or away from the furnace body.

On the upper side of the furnace body 10, a loop 12 is provided so as to be openable and closable, and three electrode rods 13, for example, are inserted into the loop.

The loop is suspended on the support frame 11 and placed on the furnace body. An arm (14) for raising and lowering these electrode rods is coupled to the electrode rod.

This furnace body 10 is placed on a stand 20, which is engaged with a support frame to support the lower portion of the support frame 11. [ A through hole (21) is formed in the stand, and a bearing (22) is interposed between the through hole and the hearth.

The outer ring 23 of the bearing 22 is fixed to the inner circumferential surface of the through hole 21 formed in the stand 20 and the inner ring 24 of the bearing is fixed to the outer circumferential surface of the furnace body 10. [ A plurality of rotating members 25 such as rollers and balls are disposed between the inner and outer rings. Due to the interposition of such bearings, the furnace body can rotate smoothly with respect to the stand.

A tilting cylinder 27 is connected to the lower end of the stand 20 so that the tilting cylinder can tilt the electric furnace.

5, an arc-shaped tilting gear 26 is provided at one side of the bottom surface of the stand 20 and a rack gear 28 engaged with the tilting gear is installed on the upper surface of the support wall 29 do. When the furnace body 10 tilts forward and backward together with the stand by the operation of the tilting cylinder 27, the tilting gear is moved along the rack gear.

The rotation drive unit 30 includes a drive motor 31 and a pinion 32 connected to receive rotational force from the drive motor. A speed reducer (not shown) may be interposed between the drive motor and the pinion. Here, an electric motor or a hydraulic motor may be employed as the driving motor.

A substantially belt-shaped rotary gear 16 is provided on the outer circumferential surface of the furnace body 10 so as to be engaged with the pinion 32 of the rotary drive section 30 and extending by a predetermined length in the circumferential direction.

Accordingly, the pinion 32 is rotated by the rotational force transmitted from the drive motor 31, and the pinion and the rotary gear 16 are engaged with each other so that the furnace body 10 can rotate in the circumferential direction by a predetermined angle .

Here, the drive motor 31 (for example, an electric motor or a hydraulic motor) having a proper capacity, the pinion 32 having an appropriate size, and the rotation gear 16 ) Is provided.

The rotation driving unit 30 is connected to the movement driving unit 40. The movement driving unit is composed of a moving cylinder 42 mounted on a separate support member 41, Is coupled with the bracket 33 provided with the rotation drive portion.

As a result, the rotary drive unit 30 is advanced to the furnace body by the expansion and contraction of the moving cylinder 42, and the pinion 32 is engaged with the rotation gear 16 or retreated in the opposite direction, The engagement can be released.

The provision of the movement drive unit 40 as described above makes it possible to eliminate interference with components such as the parts related to the rotation drive unit 30, components such as wiring, and the like during the tilting of the electric furnace.

In addition, the electric furnace according to one embodiment of the present invention may include a stopper 50 for preventing relative rotation between the furnace body 10 and the stand 20 during tilting.

The stopper 50 is composed of a fastening cylinder 52 provided on the support frame 11 described above. The operating rod 53 of the fastening cylinder 52 is inserted into one side surface of the furnace body 10 and a receiving portion 17 for holding the end portion thereof is provided.

In addition, as shown in FIG. 2, in the electric furnace according to one embodiment of the present invention, a plurality of temperature sensing portions 60 may be installed in the furnace body 10.

The temperature sensing portion 60 may include a temperature sensor, for example, a thermocouple extending through the outer tube of the furnace body 10 and extending into the refractory constituting the inner wall of the furnace body. The temperature sensing unit may be disposed at an appropriate interval of about 10 to 20, preferably about 12, in the circumferential direction of the furnace body.

The temperature inside the electric furnace can be generally determined through the temperature sensing unit 60 as described above. That is, the temperature distribution along the circumferential direction of the electric furnace can be known. For example, when the number of times of use of the furnace body 10 is in the middle, the rate of erosion of the refractory material inside the furnace body differs depending on each site, and the temperature measured by the temperature sensor at a specific position, Lt; RTI ID = 0.0 > temperature. ≪ / RTI > As a result, by sensing the temperature in the electric furnace, the state of the refractory inside the furnace body can be grasped.

In addition, the refractory is reduced in thickness (radial length of the furnace body) over time. The temperature of the refractory is reduced, so that the position of the heat source can be automatically controlled so that the heat source is in the proper position. The degree of erosion of the refractory can be grasped.

Further, in order to ensure smooth flow of molten steel, the temperature of the molten steel must be high so as to ensure the fluidity of the molten steel, so that it is possible to obtain an additional advantage of detecting the proper drawing time of molten steel by sensing the temperature in the electric furnace.

2, the electric furnace according to one embodiment of the present invention includes a plurality of temperature sensing units 60, a driving motor 31 of the rotation driving unit 30, a tilting cylinder 27, a movement driving unit 40, A control unit 70 electrically connected to the moving cylinder 42 of the stopper 50 and the tightening cylinder 52 of the stopper 50 may be further included.

The control unit 70 receives the temperature measurement signal from the temperature sensing units 60 and then the temperature measured by the temperature sensing unit at the specific position is excessively elevated relative to the temperature measured by the temperature sensing unit at another position , And controls the drive motor 31 to rotate the furnace body 10 by a predetermined angle. In addition, it is possible to control the operation of the tilting cylinder 27, the moving cylinder 42, the tightening cylinder 52 and the like necessary for the operation of the electric furnace.

The operation of the electric furnace according to one embodiment of the present invention will be described.

First, the loop 12 is removed from the upper portion of the furnace body 10, the object to be melted such as metal or alloy is put in a state where the furnace body is opened, then the loop is covered again and the arm 14 is operated . At this time, the operating rod 53 of the fastening cylinder 52 constituting the stopper 60 is elongated and its end portion is inserted into the receiving portion 17 of the furnace body.

A high current is supplied to the electrode rod 13 to generate an arc, and the molten object charged into the furnace body 10 is dissolved. At the same time, the temperature in the electric furnace is measured by the temperature sensing units 60.

The operation rod 53 of the tightening cylinder 52 is contracted so that the end of the operation rod 53 is moved away from the receiving portion 17 of the furnace body 10 And the operating rod 43 of the moving cylinder 42 is extended so that the rotational driving portion 30 is advanced toward the furnace body so that the pinion 32 is engaged with the rotating gear 16. [ Subsequently, the drive motor 31 is operated to rotate the pinion connected to the drive motor.

When the pinion 32 is rotated, the rotation gear 16 meshing with the pinion is rotated together with the rotation of the pinion 32, whereby the furnace body 10 rotates in the circumferential direction by a predetermined angle.

Since the bearing 22 is interposed between the furnace body 10 and the stand 20, the furnace body can rotate smoothly with respect to the stand. The rotational angle and speed of the furnace body are controlled by the rotation speed of the drive motor 31, And the like can be controlled. The furnace body rotates at a speed of about 5 RPM or less, preferably about 1 RPM.

In this case, since the bearing 22 is interposed between the furnace body and the stand 20, the small size of the drive motor 31 is small, There is an advantage that the furnace body can be stably rotated without rocking on the stand by only the driving force.

When the furnace body 10 rotates, the loop 12 hanging on the support frame 11 from above the furnace body can be held, for example, at a height of several Cm and fixed without rotating with the furnace body. Here, the electrode rod 13 inserted in the furnace body through the loop also remains fixed with the loop.

In this case, as the furnace body 10 rotates at a slow speed without swinging, a high current is supplied to the electrode rod 13 during the rotation of the furnace body so that the melting of the object to be melted can be continuously performed by the arc.

When the furnace body 10 is rotated in the circumferential direction by a predetermined angle, the loop 12 is lowered again.

Therefore, even if a non-uniform temperature distribution occurs in the electric furnace, the furnace body 10 can be rotated to uniformly use the refractory inside the furnace body, thereby preventing uneven wear of the refractory, The number of times of stopping and the time and the like can be reduced, and the productivity can be improved.

After the object to be melted in the electric furnace is dissolved, the furnace body 10 is rotated in the home position, that is, the driving motor 31 is operated in the reverse direction, and the pinion 32 rotates the furnace body in the direction of returning the furnace body by a predetermined angle. Of course, the loop 12 hanging from the support frame 11 while the furnace body is rotating can be held somewhat raised from the furnace body and fixed without rotating with the furnace body.

When the furnace body 10 reaches the home position, the operating rod 53 of the fastening cylinder 52 constituting the stopper 60 is extended and the end of the operating rod 53 is inserted into the housing portion 17 of the furnace body. The engagement of the pinion 32 and the rotary gear 16 is released by causing the rotary drive portion 30 to retract from the furnace body.

In this state, the furnace body 10 is fixed so as not to rotate with respect to the stand 20, and when the melting operation of the furnace is completed, the furnace body is tilted by the tilting cylinder 27 connected to the lower end of the stand, The molten steel is discharged through the outflow port 18, for example.

Meanwhile, in the present invention, the dust measuring means 1000 is installed at one end of the stand. When it is determined that there is more dust than the reference result of the measurement result of the dust measuring means 1000, an alarm signal is outputted through the alarm signal outputting unit 2000 And the dust around the device is higher than the reference value so that the operator can evacuate or remove the dust properly.

The dust measuring means 1000 according to the present invention includes an infrared transmitting means (A) for emitting infrared rays, a receiving means for receiving the light emitted from the infrared transmitting means and positioned to face the infrared transmitting means, (D) for controlling the input voltage of the infrared ray transmitting means (A) to increase when the output voltage of the infrared ray receiving means (B) is smaller than a predetermined value, an infrared ray receiving means (C).

The infrared transmitting unit A receives the infrared transmitting control signal from the dust measuring control unit C, determines the infrared transmitting amount, and outputs the changed infrared transmitting amount.

That is, when the result of the infrared ray receiving means B is transmitted to the dust measurement control section C, the dust measurement control section C predicts the dust generation amount based on the data of the infrared ray receiving means B, And outputs a control signal to the infrared ray transmitting means (A) to adjust the infrared ray transmission amount to induce the output.

That is, the light amount data outputted from the infrared ray receiving means is read by the dust measurement control unit, and the light amount of the infrared light emitting means is automatically controlled based on the read light amount data, so that the sensitivity adjustment is automatically maintained constant. So that the measurement can be performed while maintaining the sensitivity state.

In other words, the dust measurement control section C determines that the degree of contamination is high when the amount of received light of the infrared ray receiving means B is low, and outputs a control signal to increase the light amount of the infrared ray transmitting means A If the amount of light received by the infrared ray receiving means C is too high, a contamination-free state or a precise measurement becomes difficult. Therefore, a control signal is outputted so as to lower the light amount of the infrared ray transmitting means A That is, it is necessary to keep the amount of infrared transmission light in an appropriate state. The infrared ray amount measured through the infrared ray receiving means is accurate and the dust amount can be more precisely predicted. Therefore, the dust amount data measured by the dust measurement control unit of the present invention can output the dust measurement result with high reliability.

The present invention relates to a zoom lens comprising a concave lens group (1) having a plurality of concave lenses mounted thereon to limit the output of infrared rays;

An infrared ray transmitting element (2) for outputting an infrared ray near the concave lens group;

The concave lens group is disposed on one side of the concave lens group to allow the infrared ray output to be controlled. When the ambient temperature is high according to the amount of change in temperature, the concave lens group is caused to flow to the left side so that infrared rays pass through the lens having a low concave angle, A shape memory spring 3 for controlling the output to be higher and controlling the infrared ray output to be lowered by allowing the group of concave lenses to flow to the right when the ambient temperature is lower and allowing the infrared ray to pass through the lens having a higher concave angle;

And a fixing portion (4) located at the right end of the shape memory spring and supporting the movement of the shape memory spring.

A housing 5 for housing the spring and the fixing unit;

The housing is provided at one side of the shape memory spring and is forced to inflate the shape memory spring through heat generation to move the concave lens group to the left side so that infrared rays are transmitted through a lens having a low concave angle, A heating means (6) for inducing the temperature to be forcibly increased;

And is disposed on the other side of the shape memory spring 3 to transmit cooling heat to forcibly contract the shape memory spring 3 to move the concave lens group to the right side, And a thermoelectric element (7) for allowing the infrared ray to pass therethrough so that the infrared ray output is forcibly lowered;

A transmission control unit 8 that controls the infrared ray output to be increased by operating the heat generating unit when the dust is heavy and controls the infrared ray output by operating the thermoelectric element when the dust is small when electrically connected to the heating unit and the thermoelectric element, .

A plurality of holes 5a and 5b 5c are formed at the rim of the housing where the fixing portion 4 is located and a magnet 9 for setting the position of the fixing portion 4 is inserted into the hole .

That is, the fixing portion 4 is made of metal, and the magnet 9 is inserted into the hole to temporarily fix the fixing portion. The magnet 9 is set in the center hole 5b or the right hole 5c and the magnet 9 is set in the center hole 5b or the left hole 5a. do.

Then, the position of the first transmitting element 2 is located at the center of the concave lens group 1, and then, according to the temperature change, it expands and shrinks appropriately so that the density of the dust can be accurately discriminated.

The fixing part 4 of the present invention can be configured to be coupled by one-touch operation. The fixing part 4 includes a spring 4a provided inside the fixed part case, a sliding ball 4b provided at an end part of the spring, And is configured to be coupled to the housing 5 while being clicked.

That is, holes are formed in the housing 5 at regular intervals in advance, and the sliding balls 5b are temporarily engaged with the holes while moving the fixing portions. At this time, the sliding balls are spread to the left and right due to the action of the elastic spring 4a So that the fixed state is maintained.

Accordingly, it is possible for the user to freely adjust the position of the fixing portion.

The present invention is configured such that the output of the transmitting element 2 is automatically controlled in response to a change in temperature, so that the shape memory spring 3 is set to the basic temperature, and when the temperature rises, the shape memory spring expands, The shape memory spring 3 is reduced and the light of the transmitting element 2 is lowered and output when the temperature is lowered.

That is, since the dust is distributed in the gas, the movement becomes active when the temperature rises, so that the dust concentration can be checked more accurately than when the output of the transmitting element 2 is lowered. When the temperature is lowered, 2) can be checked more precisely than when the output is increased.

Accordingly, the present invention allows the concave lens group 1 to flow in a more accurate manner by reflecting the temperature change.

In actual operation, first, the light of the transmitter is outputted through the third concave lens 1c, which is installed at the center of the concave lens group 1, basically.

When the ambient temperature rises, the shape memory spring expands and the second concave lens 1b, which is located on the right side of the third concave lens 1c and whose concave angle is lower than that of the third concave lens 1c, Thereby lowering the optical output of the transmitting element 2 and outputting it. When the ambient temperature is lowered, the shape memory spring 3 contracts and the fourth concave lens 1d located on the left side of the third concave lens 1c and having a concave angle higher than that of the third concave lens 1c is transmitted So that the light output of the transmitting element 2 is increased and outputted.

As described above, according to the present invention, the shape memory spring 3 automatically expands and shrinks in response to the ambient temperature, thereby promoting a change in light amount according to the movement of the dust, thereby enabling to grasp the more accurate dust concentration, .

On the other hand, according to the present invention, the transmission control section 8 forcibly moves the concave lens group 1 according to the dust concentration so as to grasp the most accurate dust density. Even if there is no temperature change, So that the concentration of the dust can be grasped accurately.

That is, in the present invention, when the dust measurement control unit C outputs a control signal in order to facilitate the change of the light amount of the infrared ray transmission means, the transmission control unit 8 recognizes the control signal and drives the heat generation means 6 and the thermoelectric element 7 So that the most appropriate infrared transmission is made.

First, the infrared light is basically outputted through the third concave lens 1c provided at the center of the concave lens group 1. When the infrared light is to be output with a small reduction, the transmission control unit 8 controls the heating means 6 ) Of the third concave lens 1c to generate heat to cause the shape memory spring to expand and thus the transmission element 2 is fixed so that the concave lens group 1 moves and the second concave The output light of the transmitter is outputted through the second concave lens while the lens 1b moves to the position of the transmitting element 2. [

When the infrared light is to be outputted in a further reduced amount, the transmission control unit 8 operates the heat generating unit 6 to generate more heat to cause the shape memory spring 3 to expand more, and accordingly the concave lens group 1 And the first concave lens 1a is moved to the position of the transmitting element 2 so that the light of the transmitting element 2 is output through the first concave lens 1a.

When the infrared light is to be outputted with a high light output, the transmission control unit 8 drives the thermoelectric element 7 to generate cooling heat so that the shape memory spring 3 is contracted, and accordingly the concave lens group 1 moves The fourth concave lens 1d provided on the left side of the third concave lens 1c is located in the transmitting element and accordingly the light of the transmitting element 2 is outputted through the fourth concave lens 1d.

When the infrared light is to be outputted with higher light output, the transmission control unit 8 drives the thermoelectric element 7 to generate more cooling heat so that the shape memory spring 3 is further contracted and accordingly the concave lens group 1 The fifth concave lens 1e is moved to the position of the transmitting element 2 so that the light of the transmitting element 2 outputs light through the fifth concave lens 1e.

The concave lens group is designed to vary the degree of output of infrared light according to the concave angle of the central portion. The third concave lens 1c is basically provided at the center of the working rod and forms a concave angle of 25 degrees.

The second concave lens 1b is used for outputting a slightly reduced amount of infrared light and is provided on the right side of the third concave lens 1c and forms a depression angle of 15 degrees.

The first concave lens 1a is used when it is necessary to further reduce the infrared light and is provided on the right side of the second concave lens 1b and forms a depression angle of 5 degrees.

The fourth concave lens 1d is used when it is necessary to output the infrared ray with higher light output, and is provided on the left side of the third concave lens 1c and forms a depression angle of 35 degrees.

The fifth concave lens 1e is used when it is necessary to output the infrared ray with a higher intensity, and is provided on the left side of the fourth concave lens 1d and forms a concave angle of 45 degrees.

10: Noche 20: stand
22: Bearing 27: tilting cylinder
30: rotation drive unit 31: drive motor
32: pinion 40:
42: transfer cylinder 50: stopper
52: fastening cylinder 60: temperature sensing unit
70:

Claims (4)

A furnace body (10);
A stand (20) formed with a through hole through which the furnace body is rotatably seated and rotatably supporting the furnace body;
A rotation driving unit (30) interlocked with the furnace body to rotate the furnace body;
A movement driving unit (40) connected to the rotation driving unit and selectively advancing / retreating the rotation driving unit toward or away from the furnace body;
A stopper (50) installed on a support frame coupled with the stand, for preventing relative rotation between the stand and the furnace body;
A dust measuring unit 1000 installed at one end of the stand for measuring dust and outputting an alarm signal if the dust is greater than a reference value;
And an alarm signal output unit (2000) electrically connected to the dust measuring unit and outputting an alarm signal to the outside according to a control signal of the dust measuring unit;

Wherein the dust measuring means comprises:
An infrared transmitting means (A) for emitting an infrared ray; an infrared ray receiving means for receiving the light emitted from the infrared ray transmitting means and determining the inflow of dust according to the degree of the receiving amount, (C) for controlling the input voltage of the infrared ray transmitting means (A) to increase when the output voltage of the infrared ray receiving means (B) is smaller than a predetermined value;
The infrared transmitting means (A)
A concave lens group on which a plurality of concave lenses are mounted to limit the output of infrared rays;
An infrared ray transmitting element for outputting an infrared ray close to the concave lens group;
The concave lens group is disposed on one side of the concave lens group to allow the infrared ray output to be controlled. When the ambient temperature is high according to the amount of change in temperature, the concave lens group is caused to flow to the left side so that infrared rays pass through the lens having a low concave angle, A shape memory spring for controlling the infrared ray output to be lower by allowing the concave lens group to flow to the right side when the ambient temperature is low and allowing the infrared ray to pass through the lens having a high concave angle;
And a fixing portion which is located at the right end of the shape memory spring and supports the movement of the shape memory spring;

The infrared transmitting means (A)
A housing for housing the shape memory spring and the fixing portion;
The housing is provided at one side of the shape memory spring and is forced to inflate the shape memory spring through heat generation to move the concave lens group to the left side so that infrared rays are transmitted through a lens having a low concave angle, A heating means for inducing the temperature to be forcibly increased;
And is disposed on the other side of the shape memory spring to transmit the cooling heat to forcibly contract the shape memory spring to move the concave lens group to the right side so that a lens having a high concave angle and an infrared ray are allowed to pass therethrough A thermoelectric element for inducing the infrared output to be forcibly lowered;
And a transmission control unit electrically connected to the heating unit and the thermoelectric element and controlling the infrared ray output to be increased by operating the heating unit when dust is heavy and controlling the infrared ray output by operating the thermoelectric unit when dust is small Wherein the electric furnace is constructed such that the electric furnace is rotatable. delete delete The method according to claim 1,
The fixing unit includes:
A spring (4a) provided inside the case and providing an elastic force in both the upward and downward directions, a sliding ball (5a) provided at an end of the elastic spring and temporarily fixed to the housing (5) (4b). ≪ Desc / Clms Page number 13 >
KR2020180003949U 2018-08-25 2018-08-25 Rotatable electric furnace KR200488522Y1 (en)

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Application Number Priority Date Filing Date Title
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010210872A (en) * 2009-03-10 2010-09-24 Panasonic Corp Lens driving device and imaging apparatus
KR20160148082A (en) * 2015-06-15 2016-12-26 주식회사 포스코 Rotatable electric furnace
KR101875056B1 (en) * 2018-02-26 2018-07-06 (주)파코코리아인더스 Ventilation system and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010210872A (en) * 2009-03-10 2010-09-24 Panasonic Corp Lens driving device and imaging apparatus
KR20160148082A (en) * 2015-06-15 2016-12-26 주식회사 포스코 Rotatable electric furnace
KR101875056B1 (en) * 2018-02-26 2018-07-06 (주)파코코리아인더스 Ventilation system and method

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