KR100842826B1 - Apparatus for blazing furnace having air motor used in emergency, and methods for blazing using the same - Google Patents

Abstract

A blazing furnace apparatus is provided to transfer a blazing object to the outside of the apparatus when a drive motor for driving transfer units is not operable, or electric power supply is stopped, and a method for blazing using the blazing furnace apparatus is provided. A blazing furnace apparatus comprises: a drive member for driving transfer units; and an air motor(30) operated by oxidation preventing gas stored in a compression tank(35) to drive the transfer units when the drive member is not operable, or electric power supply is stopped, wherein the oxidation preventing gas remained after operating the air motor is supplied to a heating unit(400) or a preheating unit(300) to prevent oxidation of a blazing object. The air motor is operated by compressed nitrogen gas supplied from the compression tank. The compressed nitrogen gas supplied from the compression tank is directly supplied to the heating unit and the preheating unit without passing through the air motor by a three-way valve(37) when the drive member is operated. The compressed nitrogen gas is supplied to the heating unit and the preheating unit by the three-way valve via the air motor when the drive member is not operated.

Description

Brazing furnace device with emergency air motor and brazing method using same {Apparatus for blazing furnace having air motor used in emergency, and methods for blazing using the same}

Figure 1a is a front view showing a brazing furnace device according to a preferred embodiment of the present invention.

1b is a plan view of the brazing furnace device of FIG.

Figure 2a is a plan view showing a drive gear portion provided in the brazing furnace apparatus of Figure 1;

Figure 2b is a side view showing the drive gear portion provided in the brazing furnace apparatus of Figure 1;

Figure 2c is a front view showing the drive gear portion provided in the brazing furnace apparatus of Figure 1;

FIG. 2D is a diagram illustrating a path through which compressed nitrogen gas is supplied to an air motor provided in the brazing furnace apparatus of FIG. 1. FIG.

Figure 2e is a perspective view showing a tension roller provided in the drive gear portion of Figure 2a.

Figure 3a is a front view showing a driven gear unit provided in the brazing furnace device of Figure 1;

Figure 3b is a plan view showing a driven gear unit provided in the brazing furnace apparatus of Figure 1;

FIG. 4A is a front view of the front chamber of the brazing furnace apparatus of FIG. 1; FIG.

4B is a side view showing the front chamber of FIG. 4A.

5 is a cross-sectional view showing a preheating unit provided in the brazing furnace apparatus of FIG.

6 is a cross-sectional view of a heating unit provided in the brazing furnace apparatus of FIG. 1.

7A is a cross-sectional view of a water cooling unit provided in the brazing furnace apparatus of FIG. 1.

FIG. 7B is a side view of the water cooling unit of FIG. 7A. FIG.

8 is a cross-sectional view showing a rear thread provided in the brazing furnace apparatus of FIG.

9 is a cross-sectional view showing an air cooling unit provided in the brazing furnace apparatus of FIG.

<Description of main reference numerals in the drawings>

30: air motor 35: compression tank

100: first transfer unit 100a: second transfer unit

200: all rooms 300: preheating unit

400: heating unit 500: water cooling unit

600: rear room 700: air cooling unit

The present invention relates to a brazing furnace device having an emergency air motor and a brazing method using the same, and more particularly, when a driving member (driving motor) for driving a transfer unit is inoperable or an electrostatic discharge. In this case, the present invention relates to an apparatus and a method capable of transporting out a brazing object inside the apparatus.

In general, the brazing is to join the base material using the filler metal between 450 ℃ or more and below the melting point of the base material, when the temperature reaches a certain temperature, the filler material melts and soaks between the two base materials due to capillary action to join the two base materials.

The brazing furnace apparatus includes a preheating unit for preheating the brazing object in a dried state after the flux is applied, a heating unit for brazing the object by heating the brazing object preheated by the preheating unit, and an object brazed by the heating unit. And a cooling unit for cooling, and a transfer unit for moving the brazing object from the preheating unit to the cooling unit.

The brazing object is moved by the transfer unit, preheated in the preheating unit and brazed in the heating unit. However, when the driving motor for driving the transfer unit suddenly becomes inoperable, transfer of the brazing object by the transfer unit becomes impossible, which causes a problem that all the brazing objects in the process must be disposed of.

In order to solve this problem, a method of installing a plurality of drive motors and operating another drive motor when one of the drive motors has failed has been proposed. However, this method also cannot solve the above problem because the drive motor cannot be operated in the case of the electrostatic discharge.

The present invention has been made to solve the above problems, and provides a brazing furnace device and a brazing method using the same that can transfer a brazing object out of the device when the drive motor for driving the transfer unit is inoperable or in case of power failure. Its purpose is to.

In order to solve the above problems, the brazing furnace apparatus according to the present invention, the drive member for driving the transfer unit; And an air motor operated by an anti-oxidation gas stored in the compression tank so as to drive the transfer unit when the driving member is inoperable or in case of power failure.

Preferably, the antioxidant gas after operating the air motor is supplied to a heating unit or a preheating unit to prevent oxidation of the brazing object.

Preferably, at least two transfer units are provided, and each transfer unit has a driving member to transfer the brazing object at a transfer speed different from that of other transfer units.

In another aspect of the present invention, the brazing method is provided with at least two transfer units, and separates and loads the brazing objects into different transfer units according to the heating rate, and the driving member for driving the transfer unit is inoperable. In case of power failure or in case of power failure, the transfer unit is driven by using an air motor operated by an anti-oxidation gas supplied from the compression tank.

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 specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that 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.

FIG. 1A is a front view of a brazing furnace apparatus according to a preferred embodiment of the present invention, and FIG. 1B is a plan view of the brazing furnace apparatus. 2A is a plan view showing a drive gear part provided in the brazing furnace apparatus, FIG. 2B is a side view showing the drive gear part, and FIG. 2C is a front view showing the drive gear part.

Referring to the drawings, the brazing furnace apparatus 1 may be operated when the driving member 11 for driving the transfer units 100 and 100a and the driving member 11 are inoperable or in case of power failure. An air motor 30 is provided. In the present invention, the transfer units 100 and 100a are not limited in number, but for the convenience of description, in the case where two transfer units 100 and 100a are provided, that is, the first transfer unit 100 and the first transfer unit 100 and 100a are provided. 2 the present invention will be described by taking the case where the transfer unit (100a) is provided as an example.

In addition, the first and second transfer units 100 and 100a may be driven at the same speed by the single driving member 11 or the single air motor 30, respectively, the driving members 11 or the respective air motors. It may be driven at different speeds by having 30. Hereinafter, for convenience of description, a case in which the driving member 11 and the air motor 30 are respectively installed in the first and second transfer units 100 and 100a will be described.

In addition, the brazing object conveyed by the transfer units 100 and 100a includes the front chamber 200, the preheating unit 300, the heating unit 400, the water cooling unit 500, the rear chamber 600, Via the air cooling unit 700 sequentially. Therefore, in the present specification, as well as the drive member 11, the air motor 30 and the transfer unit 100, 100a, the front chamber 200, the preheating unit 300, the heating unit 400, The water cooling unit 500, the rear chamber 600, and the air cooling unit 700 will also be described.

The brazing furnace device 1 is a brazing object, for example aluminum, magnesium, manganese, silicon, copper, which is dried by a dryer 20 after flux is applied by a flux sprayer 29. , zinc, points towards me the breather easing object of stainless steel, for example, a gas atmosphere, the brazing at the D _X gas atmosphere such as nitrogen, hydrogen, LPG or LNG to a predetermined temperature. More specifically, the apparatus 1 brazes not only industrial and military products but also domestic heat exchangers such as aluminum heat exchangers such as evaporators, radiators and condensers for air conditioners such as automobiles, ships, electrical and electronics, aircraft, combat vehicles, etc. Can be performed.

Hereinafter, the main material of the brazing object is limited to aluminum and the non-oxidizing gas for the low dew point gas atmosphere is limited to nitrogen (N ₂ ) gas. However, it is found that hydrogen (H ₂ ) gas can be used for magnesium, stainless, alloys, and ceramic brazing, and D _X gas can be used for steel copper brazing.

On the other hand, since the flux sprayer 29 and the dryer 20 is generally widely used, description thereof will be omitted.

Furthermore, since the driving member 11 and the air motor 30 are members for driving the transfer units 100 and 100a, they will be described together with the transfer units 100 and 100a.

The first transfer unit 100 is a mesh for transmitting the driving force of the drive gear unit 10 driven by the drive member 11, the driven gear unit 90, and the drive gear unit 10 to the driven gear unit 90. A belt 80 is provided.

In the drawing, the drive gear unit 10 is installed behind the air cooling unit 700 and the driven gear unit 90 is installed in front of the front chamber 200, but the drive gear unit is in the front chamber. It may be installed in front of the (200) and the driven gear unit may be installed in the rear of the air cooling unit (700).

The drive gear unit 10 includes a drive member 11, a first shaft 13, a timing pulley 14, a main gear 18, and an air motor 30.

The driving force of the driving member 11 is the first chain 12, the first shaft 13, the first shaft 13, and the timing pulley 15 provided between the driving member 11 and the first shaft 13. ) The second chain 14 provided between the second chain 14, the timing pulley 15, the sprocket 16 provided on the timing pulley 15, and the third chain 17 provided between the sprocket 16 and the main gear 18. ) Is sequentially transmitted to the main gear 18 via. The mesh belt 80 is transferred while the direction is changed by the main gear 18.

As the driving member 11, a 'drive motor' operated by electric energy may be used.

A first rotation sensor (not shown) is installed on the first shaft 13 to measure the rotational speed R.P.M of the first shaft 13 and transmit the signal to the controller (not shown). The control unit determines whether the operation of the driving member 11 is normal and whether the driving force transmission is normal according to the signal, and displays whether the operation is normal through a display unit (not shown).

It is preferable that the rubber layer 19 is formed in the outer peripheral surface of the main gear 18. The rubber layer 19 increases the friction force between the main gear 18 and the mesh belt 80 to prevent the driving force of the main gear 18 from being lost.

Preferably, a support roller 50 for supporting the brazing object 2 is provided above the main gear 18. The support roller 50 supports the brazing object 2 transferred by the mesh belt 80 until the worker lifts it up.

As such, in the brazing furnace apparatus 1 of the present invention, at least two or more transfer units 100 and 100a may have different transfer speeds, but the transfer speeds of the transfer units 100 and 100a may be the same. It may be.

For example, the first and second shafts 13 of the first transfer unit 100 and the first shaft 13 of the second transfer unit 100a are selectively connected using the clutch member 70 so as to first, second, and second. The first shaft 13 of the transfer units 100 and 100a may be driven by one driving motor 11. Since the clutch member 70 is a conventional member used to transmit or block a driving force between the shaft and the shaft, a detailed description thereof will be omitted. The clutch member 70 may be controlled to be operated by a controller (not shown).

When the first shafts 13 of the first and second transfer units 100 and 100a are connected to each other using the clutch member 70, the brazing object 2 having a size exceeding the width of the mesh belt 80 is also processed. can do. In addition, when the drive motor 11 of the first transfer unit 100 is broken, the brazing process may be continued by using the drive motor 11 of the second transfer unit 100a.

Preferably, the drive gear 10 includes a lever member 22 installed on the pivot shaft 21 so as to be rotatable, an auxiliary gear 23 installed on one end of the lever member 22 so as to be rotatable, and an auxiliary gear 23. ) Is provided with a contact member 24 for biasing the main gear 18 toward the main gear 18. Meanwhile, the auxiliary gear 23, the lever member 22, and the main gear 18 are not illustrated in FIG. 2A, and the close contact member 24 is not illustrated in FIG. 2B.

The lever member 22 rotatably supports both ends of the auxiliary gear 23. Therefore, when the lever member 22 rotates, the auxiliary gear 23 also rotates with the lever member 22.

The auxiliary gear 23 is rotatably installed at one end of the lever member 22, preferably at the upper end. More preferably, the drive gear unit 10 includes a second rotation sensor (not shown) for detecting the rotation of the auxiliary gear 23. The second rotation sensor detects the rotational speed R.P.M of the auxiliary gear 23 and transmits the signal to a controller (not shown), and the controller displays this on the display unit.

In addition, the controller may determine whether the driving force is well transmitted by comparing the rotation speed of the auxiliary gear 23 sensed by the second rotation sensor with the rotation speed of the first shaft 13 detected by the first rotation sensor. Can be. If it is determined that the normal operation is not normal by comparing the rotational speed of the auxiliary gear 23 with the rotational speed of the first shaft 13, the user may use the contact member 24 to closely adhere to the main gear 18. You can do that. This is to prevent the main gear 18 from slipping by bringing the auxiliary gear 23 into close contact with the main gear 18 because the driving force is transmitted when the mesh belt 80 contacts the rubber layer 19.

The contact member 24 is installed at the other end of the lever member 22, preferably at the lower end thereof, so that the auxiliary gear 23 is brought into close contact with the main gear 18 by pulling the lever member 22 toward the front chamber 200. do. An elastic spring may be used as the contact member 24.

One end of the contact member 24 is installed on the lever member 22 and the other end is installed on the connecting flat plate 25. The connecting flat plate 25 is connected to the frame 27 by the length adjusting member 26. Therefore, when the length adjusting member 26 is moved to the front chamber 200 and fixed to the frame 27, the auxiliary gear 23 rotates toward the main gear 18.

The air motor 30 provides the driving force to the first transfer unit 100 when the driving member 11 is inoperable, for example, when the driving member 11 is out of order or when the driving member 11 is broken. If the operation of the brazing furnace 1 is suddenly stopped due to a failure or power failure of the driving member 11 while the brazing furnace device 1 is operated, all of the brazing objects 2 have to be discarded. In this case, the air motor 30 The brazing object 2 can be transported out of the device 1 because it can be operated with no power. When the air motor 30 is provided in each of the first transfer unit 100 and the second transfer unit 100a, even when the air motor 30 is operated, the transfer of the first and second transfer units 100 and 100a is performed. The speed can be different.

As shown in FIG. 2D, the air motor 30 is operated by compressed nitrogen gas supplied from the compression tank 35. When the driving member 11 is operated, the compressed nitrogen gas supplied from the compression tank 35 is transferred to the heating unit 400 and the preheating unit 300 by the three-way valve 37 without passing through the air motor 30. When directly supplied and the drive member 11 is inoperable, the compressed nitrogen gas is supplied to the heating unit 400 and the preheating unit 300 via the air motor 30 by the three-way valve 37. Compressed nitrogen gas passing through the air motor 30 operates the air motor 30 to generate a driving force. Preferably, the air motor 30 is operated at a pressure of approximately 5-7 kg / cm ² .

As such, since the air motor 30 uses nitrogen gas supplied to the heating unit 400 and the preheating unit 300, the compressed air or the compressed gas is not required, thereby reducing the equipment cost. In addition, since the nitrogen gas used in the air motor 30 is supplied to the heating unit 400 and the preheating unit 300 and used as an antioxidant gas, there is no waste of nitrogen gas.

The driving force generated by the air motor 30 is transmitted to the shaft gear 31 installed in the first shaft 13 by the fourth chain (32). The driving force transmitted to the first shaft 13 includes the second chain 14 provided between the first shaft 13 and the timing pulley 15, the timing pulley 15, and the sprocket provided on the timing pulley 15. 16 and the third chain 17 provided between the sprocket 16 and the main gear 18 are sequentially transmitted to the main gear 18.

As the air motor 30, '6 AM-FRV-23A' of the US 'GAST' may be used.

Meanwhile, even when the air motor 30 is operated, the first shaft 13 may be selectively connected to each other using the clutch member 70.

As shown in FIG. 2E, the drive gear 10 includes a tension roller 40 that adjusts the tension applied to the mesh belt 80, and a support member 42 that supports the tension roller 40 to be elevated. It may be provided. The tension roller 40 can be raised and lowered while the protrusions formed at both ends thereof are inserted into the vertical grooves 44 of the support member 42. Therefore, when the tension force applied to the mesh belt 80 is reduced, the tension roller 40 is lowered to make the mesh belt 80 taut.

The driven gear part 90 is provided in front of the front chamber 200, as shown to FIG. 1A and FIG. 1B. As shown in FIGS. 3A and 3B, the driven gear portion 90 includes an upper driven gear 92 and a lower driven gear 94.

The mesh belt 80 is installed on the drive gear 10 and the driven gear 90 in an endless track. Preferably, the mesh belt 80 has a metal material that can withstand high temperatures and is not corroded by an antioxidant gas. In addition, in the present invention, if the belt is made of a material that can withstand high temperatures and is not corroded by an antioxidant gas, it may be used even if it is not the mesh belt 80.

On the other hand, the second transfer unit (100a) transfers the driving force of the drive gear unit 10, the driven gear unit 90, and the drive gear unit 10 driven by the drive member 11 to the driven gear unit 90. A mesh belt 80 is provided. The drive gear unit 10, the driven gear unit 90, and the mesh belt 80 have the same structure as the drive gear unit 10, the driven gear unit 90, and the mesh belt 80 of the first transfer unit 100. . Since the second transfer unit 100a is driven by the drive member 11 which is operated separately from the drive member 11 of the first transfer unit 100, the transfer speed is different from the transfer speed of the first transfer unit 100. It can have Therefore, the brazing objects 2 having different heating speeds may be simultaneously transported by the first transfer unit 100 and the second transfer unit 100a.

For example, if there is a brazing object having a thickness of 60 mm and a brazing object having a thickness of 100 mm, the brazing object having a thickness of 60 mm is loaded on the mesh belt 80 of the first transfer unit 100 and the brazing object having a thickness of 100 mm is transferred to the second. After loading on the mesh belt 80 of the unit (100a), the feed rate of the first transfer unit 100 is faster than the feed rate of the second transfer unit (100a). This is because the brazing object having a thickness of 60 mm reaches the brazing temperature first compared to the brazing object having a thickness of 100 mm via the preheating unit 300 and the heating unit 400.

In addition, as described above, since the air motor 30 is provided in each of the first transfer unit 100 and the second transfer unit 100a, the air motor 30 may not be operated even when the driving member 11 is inoperable. By using the transfer speed of the first and second transfer units 100 and 100a can be different.

As described above, the brazing furnace apparatus 1 according to the present invention can make the transfer speeds of the first and second transfer units 100 and 100a different so that the brazing objects having different heating speeds can be processed at once.

As described above, the brazing object 2 is transferred by the transfer units 100 and 100a to the front chamber 200, the preheating unit 300, the heating unit 400, the water cooling unit 500, The rear chamber 600 and the air cooling unit 700 are sequentially passed through.

The front chamber 200 is installed in front of the preheating unit 300 to prevent outside air from entering the preheating unit 300. As shown in FIGS. 4A and 4B, the front chamber 200 is provided with an inlet door 210 opened and closed by an opening / closing motor (not shown), and is installed to be densely arranged so that external air flows into the preheating unit 300. It is provided with a metal curtain 220 to block the thing, and the cooling unit 230 to prevent the front chamber 200 from overheating by the heat transferred from the preheating unit (300). The cooling unit 230 is provided around the front chamber 200, and a cooling water (not shown) is filled therein. Reference numeral 240 is a guide member that prevents the mesh belt 80 of the first and second transfer units 100 and 100a from contacting each other.

The brazing object 2 via the front chamber 200 is transferred to the preheating unit 300. The preheating unit 300 is positioned inside the furnace member 310 so as to enclose the object 2 for the management of the gas atmosphere inside the furnace member 310 and the furnace member 310 sealed for thermal insulation or heat insulation. And a tunnel type muffle member 320 having a lower portion, a preheating member 330 at upper and lower sides of the muffle member 320, and a gas supply member 340 for supplying gas into the furnace member 310; , And a circulation member 350 for continuously circulating the heated gas inside the furnace member 310.

For example, the anti-oxidation gas ejected from the gas supply member 340 is moved upward and then moved toward the side wall by the fan 352 of the circulation member 350, and then down the muffle member 320. Is moved. That is, the antioxidant gas ejected from the gas supply member 340 is heated by the preheating member 330 while moving in the direction of the arrow, and the heated nitrogen gas preheats the brazing object 2. The internal temperature of the furnace member 310 varies depending on the type of the brazing object 2 and the specifications of the furnace member 310, but it is generally preferred to maintain about 500 ° C. The internal temperature of the furnace member 310 is measured by the thermocouple 334. In addition, an oxygen measuring member (not shown) is installed inside the furnace member 310. The oxygen measuring member is provided to set the oxygen concentration inside the furnace member 310 to a predetermined level or less, for example, about 50 ppm or less.

The brazing object 2 preheated by the preheating unit 300 is moved to the heating unit 400. The heating unit 400 includes a heating furnace 410 having an enclosed space and a tunnel-type core located inside the heating furnace 410 so as to enclose the object 2 densely inside the heating furnace 410. A member 420, a heating member 430 disposed on the upper and lower portions of the core member 420, a gas supply pipe 442 for supplying nitrogen gas into the heating furnace 410, and a heating furnace ( 410 is provided with an oxygen measuring member 444 for measuring the oxygen concentration therein.

The heating furnace 410 is a multi-layer fireproof brick member 418 provided on the bottom surface, the main thermal insulation member 411 is installed to a predetermined thickness inside the heating furnace 410, the ceiling and main of the heating furnace 410 It is provided with a main heat insulating member 415 installed inside the insulating member 411.

The refractory brick member 418 is equipped with a heat insulating brick 418a having a high heat insulating property such as "BRICK B-1" at the lowest floor, and has a high heat resistance such as "BRICK SK-34" at the top floor. The heat-resistant brick 418b is provided. The intermediate layer is provided with an intermediate brick layer 418c such as, for example, "BRICK B-5" and "BRICK C-1", each having moderate heat resistance and thermal insulation.

The main thermal insulation member 411 is made of a fiber-like material made by melting basalt, andesite, etc., and is a heat insulator and rock wool, which is used as insulation, insulation, and sound absorbing material, or rocks such as andesite and basalt. Limestone is mixed with a mixture of slag, nickel, manganese, and manganese.The raw material is melted in an electric furnace at a high temperature of 1,500-1,600 ℃, and hardened by compressed air from the nozzle under the furnace. Use blown rock fibers (Mineral Glass Fiber). The main heat insulating member 415 is made of ceramic fiber.

The core member 420 is for uniformly heating the brazing object 2 by heating the brazing object 2 by radiant heat by self heating without directly heating the brazing object 2 by the heater member 430. . That is, the core member 420 is for easily managing the gas atmosphere inside the heating furnace 410 to be suitable for main heating. In addition, the core member 420 wraps the brazing object 2 in a minimum volume in addition to the space of the heating furnace 410, thereby compacting and minimizing the gas atmosphere. The temperature inside the core member 420 is measured by the thermocouple 436. The internal temperature of the heating furnace 410 varies depending on the type of the brazing object 2 and the specifications of the heating furnace 410, but it is generally preferable to maintain about 620 ° C.

The gas supply pipe 442 supplies nitrogen gas so that the brazing object 2 is not oxidized, and the oxygen measuring member 444 measures oxygen concentration. The gas supply pipe 442 is a pipe through which nitrogen gas supplied from the compression tank 35 is moved.

The object 2 brazed in the heating unit 400 is transferred to the water cooling unit 500. The water cooling unit 500 is heated by the heating unit 400 to cool the temperature below the degree that the brazed object 2 is not oxidized. As shown in FIGS. 7A and 7B, the water cooling unit 500 includes a tunnel type cooling chamber 510 in which coolant is accommodated.

The cooling chamber 510 cools the object 2 to about 400 ° C. by the coolant contained in the cooling chamber 510 in a state where the brazed object 2 is positioned inside the tunnel. Prevents the flux present on the surface from oxidizing. Three cleaning holes 516 are provided at the lower end of the cooling chamber 510. The bottom surface of the cooling chamber 510 is designed to be inclined with respect to the center. A guide member 240 is installed at the center of the bottom surface to prevent the two mesh belts 80 from contacting each other.

The brazing object 2 that has passed through the water cooling unit 500 is transferred to the rear chamber 600. The rear chamber 600 includes a metal curtain 610 and an exit door 620. The metal curtain 610 minimizes the leakage of nitrogen gas to the outside.

In addition, as shown in FIG. 1A, since the exhaust pipe 280 is provided at the front of the exit door 620 and the rear of the inlet door 210, the nitrogen gas leaked to the exhaust pipe 280 is provided. Inflow. Nitrogen gas introduced into the exhaust pipe 280 is moved to a filter device (not shown).

The air cooling unit 700 cools the brazing object 2 via the rear chamber 600 using air. The air cooling unit 700 includes an air cooling chamber 710, an exhaust fan 720 provided at an upper portion of the air cooling chamber 710, and a fan 730 provided at a lower side and sidewalls of the air cooling chamber 710. The fan 730 injects air into the air cooling chamber 710, and the exhaust fan 720 discharges air in the air cooling chamber 710 to the outside.

The brazing object having passed through the air cooling unit 700 is transferred toward the driven gear part 90 of the first and second transfer units 100 and 100a.

The brazing furnace apparatus having the emergency air motor according to the present invention and the brazing method using the same have the following effects.

First, the brazing object can be transported out of the device even when the driving member is inoperable or in case of power failure.

Second, since the air motor is driven by using the compressed nitrogen gas used in the heating unit or the preheating unit, a separate compressed gas storage facility is not required.

Third, since the nitrogen gas used to drive the air motor is supplied to the heating unit or the preheating unit, there is no waste of nitrogen gas.

Claims (4)

delete A drive member for driving the transfer unit; And And an air motor 30 operated by an oxidation gas stored in a compression tank so as to drive the transfer unit when the driving member is inoperable or in case of power failure. The anti-oxidation gas after operating the air motor 30 is supplied to the heating unit 400 or the preheating unit 300 to prevent oxidation of the brazing object. The method of claim 2, At least two transfer units are provided, Each conveying unit is provided with a drive member, each of which is capable of conveying the brazing object at a feed rate different from the feed rate of the other transfer unit brazing furnace apparatus. At least two transfer units are provided, and the brazing objects are separated and stacked in different transfer units according to the heating rate. A brazing method, characterized in that for driving a transfer unit using an air motor (30) operated by an anti-oxidation gas supplied from a compression tank when the drive member for driving the transfer unit is inoperable or a power failure.

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