CN220206313U - Air outlet structure of vacuum furnace and air cooling system of vacuum furnace - Google Patents

Abstract

The application relates to a vacuum furnace air-out structure and vacuum furnace air-cooling system relates to air-cooling system's technical field, including wind pipe and first tuyere, be equipped with first tuyere on the lateral wall of wind pipe, first tuyere is one end closed one end open-ended cylindric, and the blind end of first tuyere is laminated with the lateral wall of the first tuyere department of wind pipe, and the blind end of first tuyere is equipped with the second tuyere, and first tuyere is connected with the wind pipe to can remove for the wind pipe, when first tuyere removed for the wind pipe, the second tuyere can coincide or stagger with first tuyere. Therefore, the kinetic energy loss of cooling air flow when entering the air pipeline is reduced, more cooling air can be conveyed into the first air nozzle part far away from the air collecting shell, the air flow speed and the air outlet quantity of the first air nozzle at different positions on the air pipeline are kept as consistent as possible, the cooling speed and the cooling time of workpieces at different positions are kept as consistent as possible, and the cooling uniformity of the workpieces is improved.

Description

Air outlet structure of vacuum furnace and air cooling system of vacuum furnace

Technical Field

The application relates to the technical field of air cooling systems, in particular to an air outlet structure of a vacuum furnace and the air cooling system of the vacuum furnace.

Background

The vacuum furnace is a device for heating in a vacuum environment, and the vacuum furnace discharges partial substances in a furnace chamber by utilizing a vacuum system (formed by assembling elements such as a vacuum pump, a vacuum measuring device, a vacuum valve and the like) in a specific space of the furnace chamber, so that the pressure in the furnace chamber is smaller than a standard atmospheric pressure, and the space in the furnace chamber is in a vacuum state. The vacuum furnace is mainly used for ceramic sintering, vacuum smelting, degassing of electric vacuum parts, annealing, brazing of metal parts, ceramic-metal sealing and the like.

The vacuum furnace air cooling system is a system for cooling materials in a furnace chamber and comprises a motor, an impeller, an air duct assembly and the like, the air duct assembly comprises a blowing pipe and the like, the blowing pipe is arranged in the vacuum furnace, and a plurality of groups of air nozzles are arranged on the blowing pipe along the axis direction. When the vacuum furnace air cooling system works, the motor drives the impeller to rotate, cooling air flow is conveyed into the blowing pipe, and then is discharged to an effective area of an internal heating field of the furnace through the air nozzle on the blowing pipe, so that materials in the vacuum furnace are cooled.

However, because the length of the effective area of the hot zone of the vacuum furnace is generally longer, the length of the blowing pipe is correspondingly longer, after the cooling air flow enters the blowing pipe, the cooling air flow continuously attenuates along with the kinetic energy of the cooling air flow in the blowing pipe, the air flow speed and the air outlet quantity sprayed out from the air nozzle far away from the cooling air flow air source are smaller than those sprayed out from the air nozzle near the cooling air flow air source, so that the flow speed and the flow distribution of the cooling air flow entering the hot zone are uneven, and the cooling effect on workpieces at different positions in the hot zone is greatly different, namely, the workpieces near the air source are cooled fast, the workpieces far away from the air source are cooled slowly, the cooling time of the whole workpiece is increased, the energy consumption is increased, and the performance of the workpiece is possibly reduced.

Disclosure of Invention

The utility model provides an aim at provides a vacuum furnace air-out structure and vacuum furnace air-cooling system for solve the blowpipe air-out that vacuum furnace air-cooling system exists among the correlation technique uneven, lead to the work piece cooling effect to have the problem of great difference.

In a first aspect, the application provides an air outlet structure of a vacuum furnace, which adopts the following technical scheme:

the utility model provides a vacuum furnace air-out structure, includes wind pipe and first tuyere, be equipped with first tuyere on the lateral wall of wind pipe, first tuyere is one end confined one end open-ended cylindric, the blind end of first tuyere with the lateral wall laminating of wind pipe first tuyere department, the blind end of first tuyere is equipped with the second tuyere, first tuyere with the wind pipe is connected, and can for the wind pipe removes, works as first tuyere for when the wind pipe removes, the second tuyere can with first tuyere coincidence or stagger.

Through adopting above-mentioned technical scheme, through the coincidence degree of second wind hole and first wind hole of the first tuyere of different positions on the regulation wind pipeline, can make the cooling rate and the cooling time of the work piece of different positions keep unanimous as far as, improve work piece cooling uniformity.

Optionally, the air duct further comprises a locking assembly, wherein the locking assembly is connected with the air duct and the first air nozzle and is used for limiting the first air nozzle to move relative to the air duct.

Through adopting above-mentioned technical scheme, can lock first tuyere and air duct through locking component, prevent that first tuyere from taking place not hard up.

Optionally, the wind collecting device further comprises a wind collecting shell and a guide cover, wherein the wind pipeline is fixedly arranged on the wind collecting shell and communicated with the wind collecting shell, the wind pipeline is arranged in a matrix, the guide cover is fixedly arranged in the wind collecting shell, and the wind pipeline and the communication ports of the wind collecting shell are arranged around the guide cover.

By adopting the technical scheme, the air guide cover can have a good guide effect, so that air flow uniformly enters the air pipeline.

Optionally, the wind shielding device further comprises a first heat shield, a second wind nozzle and a wind shielding plate, wherein the first heat shield is fixedly arranged on the wind collecting shell, the second wind nozzle is fixedly arranged on the first heat shield in a penetrating mode and is communicated with the inside of the wind collecting shell, and the wind shielding plate is fixedly arranged on the second wind nozzle and is arranged with the second wind nozzle away from one end of the wind collecting shell at intervals.

Through adopting above-mentioned technical scheme, can block the dispersion to the air current through the air-blocking plate, make the air current can blow out evenly.

In a second aspect, the application provides an air cooling system of a vacuum furnace, which adopts the following technical scheme:

the utility model provides a vacuum furnace air-cooling system, includes vacuum furnace air-out structure, still includes furnace body, motor and impeller, the motor set firmly in on the furnace body, the collection fan housing set firmly in the furnace body, the output shaft of motor extends to in the collection fan housing, the impeller is located in the collection fan housing, and with output shaft rigid coupling, the air duct is located in the furnace body.

Through adopting above-mentioned technical scheme, can drive impeller rotation through the motor, make the air in the furnace body flow.

Optionally, the furnace further comprises a second heat shield and a third heat shield, wherein one end of the second heat shield is fixedly connected with the first heat shield, the third heat shield is fixedly arranged in the furnace body, the third heat shield is arranged at intervals with the other end of the second heat shield, a workpiece hot field area is formed by enclosing among the first heat shield, the second heat shield and the third heat shield, and the first tuyere penetrates through the second heat shield and is communicated with the inside of the workpiece hot field area.

Through adopting above-mentioned technical scheme, can play fine thermal-insulated effect through first heat screen, second heat screen and third heat screen.

Optionally, the furnace further comprises a heat exchanger and a heat exchange shell, wherein the heat exchange shell is fixedly arranged in the furnace body, the heat exchanger is fixedly arranged in the heat exchange shell, the heat exchange shell is provided with an air inlet communicated with the inside of the furnace body, and the heat exchange shell is further provided with an air outlet communicated with the air collecting shell.

Through adopting above-mentioned technical scheme, can play fine heat transfer cooling effect to the air current through the heat exchanger, ensure the cooling air current after the heat transfer to the cooling effect of work piece.

Optionally, the furnace body includes furnace body and bell, the bell with the furnace body can the switching be connected, collect the fan housing set firmly in the furnace body, the third heat screen with the bell rigid coupling.

By adopting the technical scheme, the third heat shield can be opened together when the furnace cover is opened, so that the workpiece can be conveniently taken out from the workpiece thermal field region.

In summary, the present application includes at least one of the following beneficial technical effects: when the first air nozzle moves relative to the air pipeline, the second air holes can be overlapped or staggered with the first air holes, and the air outlet area of the first air nozzle can be reduced or increased correspondingly. Through adjusting the second wind hole and the first wind hole coincidence degree of the first wind mouth of different positions on the wind pipeline, the wind outlet area of the first wind mouth which is closer to the wind collecting shell is smaller, thereby reducing the kinetic energy loss of cooling air flow when entering the wind pipeline, enabling more cooling air to be conveyed into the wind pipeline part far away from the wind collecting shell, further enabling the air flow speed and the wind outlet quantity of the first wind mouth at different positions on the wind pipeline to be kept as consistent as possible, enabling the cooling speed and the cooling time of the workpieces at different positions to be kept as consistent as possible, and improving the cooling uniformity of the workpieces.

Drawings

FIG. 1 is a schematic diagram of the structure of the air outlet of a vacuum furnace;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;

FIG. 4 is a schematic structural view of a wind tunnel;

FIG. 5 is a schematic view of a first tuyere;

FIG. 6 is a partially enlarged schematic illustration of portion B of FIG. 2;

fig. 7 is a schematic structural diagram of a vacuum furnace air cooling system.

In the drawing the view of the figure,

10. a wind pipe; 11. a first wind hole; 12. a first connection hole;

20. a first tuyere; 21. a second air hole; 22. a second connection hole;

30. a locking assembly; 31. a bolt; 32. a nut;

40. a wind collecting shell; 50. a guide cover; 60. a first heat shield; 70. a second tuyere;

80. a wind shielding plate; 90. a furnace body; 91. a furnace body; 92. a furnace cover; 100. a motor;

110. an impeller; 120. a second heat shield; 130. a third heat shield; 140. a workpiece thermal field region; 150. a heat exchanger; 160. a heat exchange shell; 161. an air inlet; 162. an air outlet; 170. a gap; 180. a first porcelain air tap; 190. and a second porcelain air tap.

Detailed Description

The present application is described in further detail below with reference to fig. 1-7.

The embodiment of the application discloses an air outlet structure of a vacuum furnace.

Example 1

Referring to fig. 1 and 2, an air outlet structure of a vacuum furnace includes an air duct 10, a first air nozzle 20, an air collecting shell 40, a guide cover 50, a first heat shield 60, a second air nozzle 70 and an air shielding plate 80, wherein the air duct 10 is fixedly arranged on the air collecting shell 40 and is communicated with the air collecting shell 40, the air duct 10 is in matrix arrangement, the guide cover 50 is fixedly arranged in the air collecting shell 40, the guide cover 50 can be in a conical shape, communication ports of the air duct 10 and the air collecting shell 40 are arranged around the guide cover 50, cooling air flow sources enter the air collecting shell 40 and are guided by the guide cover 50, and the cooling air flow is uniformly dispersed into the air duct 10 in matrix arrangement.

Referring to fig. 3 and 4, a first air hole 11 is formed in a side wall of the air duct 10, the first air nozzle 20 is cylindrical, one end of the first air nozzle 20 is closed, one end of the first air nozzle is open, the closed end of the first air nozzle 20 is attached to the side wall of the air duct 10 at the first air hole 11, a second air hole 21 is formed in the closed end of the first air nozzle 20, the first air nozzle 20 is connected with the air duct 10 and can move relative to the air duct 10, and when the first air nozzle 20 moves relative to the air duct 10, the second air hole 21 can be overlapped or staggered with the first air hole 11.

When the first wind nozzle 20 moves relative to the wind pipe 10, the second wind hole 21 can be overlapped with or staggered from the first wind hole 11, and the wind outlet area of the first wind nozzle 20 can be reduced or increased accordingly. By adjusting the overlapping degree of the second air holes 21 and the first air holes 11 of the first air nozzles 20 at different positions on the air pipeline 10, the air outlet area of the first air nozzles 20 which are closer to the air collecting shell 40 is smaller, so that the kinetic energy loss of cooling air flow when entering the air pipeline 10 is reduced, more cooling air can be conveyed into the air pipeline 10 part far away from the air collecting shell 40, the air flow speed and the air outlet quantity of the first air nozzles 20 at different positions on the air pipeline 10 are kept as consistent as possible, the cooling speed and the cooling time of workpieces at different positions are kept as consistent as possible, and the cooling uniformity of the workpieces is improved.

Referring to fig. 3, after the overlapping area of the second wind hole 21 and the first wind hole 11 is adjusted, the wind pipe 10 and the first wind nozzle 20 can be locked and connected by the locking component 30, so as to limit the movement of the first wind nozzle 20 relative to the wind pipe 10, avoid the loosening of the first wind nozzle 20, and the specific structure of the locking component 30 is as follows: the locking assembly 30 comprises a bolt 31 and a nut 32, a first connecting hole 12 is formed in the side wall of the first wind hole 11 of the wind pipeline 10, a second connecting hole 22 coaxially opposite to the first connecting hole 12 is formed in the closed end of the first wind nozzle 20, the nut 32 is fixedly arranged on the wind pipeline 10 and coaxially arranged with the first connecting hole 12, and the bolt 31 penetrates through the first connecting hole 12 and the second connecting hole 22 and is in threaded connection with the nut 32.

Referring to fig. 4 and 5, the first wind hole 11 may be provided with two groups, the shape may be provided with a fan shape, the second wind hole 21 may be provided with two groups, the shape may be provided with a fan shape, by rotating the first wind nozzle 20 to rotate around the axis of the bolt 31, the overlapping area of the second wind hole 21 and the first wind hole 11 may be adjusted, the wind outlet area of the first wind nozzle 20 may be further adjusted, and the bolt 31 may be screwed down after the adjustment, so that the first wind nozzle 20 may be fixedly connected with the wind pipe 10.

Referring to fig. 6, the first heat shield 60 is fixedly disposed on the wind collecting case 40, the second wind nozzle 70 is fixedly disposed on the first heat shield 60 and is communicated with the inside of the wind collecting case 40, and the wind shielding plate 80 is fixedly disposed on the second wind nozzle 70 and is spaced from one end of the second wind nozzle 70 away from the wind collecting case 40.

The cooling air flow entering the wind collecting housing 40 can be blown out through the second wind nozzle 70 to cool the workpiece, and when the cooling air flow is blown out from the second wind nozzle 70, the air flow is blocked and dispersed through the wind shielding plate 80, so that the air flow can be uniformly blown out. The first heat shield 60 can perform a certain heat insulation function to reduce the heat transferred into the wind collecting shell 40, and the second air nozzle 70 can be provided with the first ceramic air nozzle 180 to reduce the heat transferred into the wind collecting shell 40 through the second air nozzle 70.

The implementation principle of the air outlet structure of the vacuum furnace in the embodiment is as follows: the cooling air flow wind source enters the wind collecting shell 40, and a part of cooling air flow is guided by the air guide cover 50, is uniformly dispersed into the air pipes 10 which are distributed in a matrix, and is blown out by the first air nozzles 20, and the other part of cooling air flow in the wind collecting shell 40 is blown out by the second air nozzles 70, so that the workpiece is cooled. By rotating the first wind nozzle 20, the superposition degree of the second wind holes 21 and the first wind holes 11 of the first wind nozzle 20 at different positions on the wind pipeline 10 is adjusted, so that the wind outlet area of the first wind nozzle 20 which is closer to the wind collecting shell 40 is smaller, the kinetic energy loss of cooling air flow when entering the wind pipeline 10 is reduced, more cooling air can be conveyed into the wind pipeline 10 part far away from the wind collecting shell 40, the air flow speed and the wind outlet quantity of the first wind nozzle 20 at different positions on the wind pipeline 10 are kept consistent as much as possible, the cooling speed and the cooling time of workpieces at different positions are kept consistent as much as possible, and the cooling uniformity of the workpieces is improved.

Example 2

Referring to fig. 7, a vacuum furnace air cooling system comprises a vacuum furnace air outlet structure, a furnace body 90, a motor 100, an impeller 110, a second heat shield 120, a third heat shield 130, a heat exchanger 150 and a heat exchange shell 160, wherein the motor 100 is fixedly arranged on the furnace body 90, the air collecting shell 40 is fixedly arranged in the furnace body 90, an output shaft of the motor 100 extends into the air collecting shell 40, the impeller 110 is positioned in the air collecting shell 40 and fixedly connected with the output shaft, the air pipeline 10 is positioned in the furnace body 90, and the impeller 110 can be driven to rotate by the motor 100, so that air in the furnace body 90 flows.

One end of the second heat shield 120 is fixedly connected with the first heat shield 60, the third heat shield 130 is fixedly arranged in the furnace body 90, the third heat shield 130 is arranged at intervals with the other end of the second heat shield 120, a workpiece thermal field region 140 is formed by enclosing among the first heat shield 60, the second heat shield 120 and the third heat shield 130, a through hole is formed in the second heat shield 120, and the first air nozzle 20 penetrates through the through hole and is communicated with the inside of the workpiece thermal field region 140. The workpiece to be heat-treated is placed in the workpiece thermal field region 140, and a good heat-insulating effect can be achieved by the first heat shield 60, the second heat shield 120 and the third heat shield 130, and in order to reduce the heat conducted to the outside of the workpiece thermal field region 140 through the first tuyere 20, a second porcelain air tap 190 can be provided in the through hole.

The furnace body 90 comprises a furnace body 91 and a furnace cover 92, the furnace cover 92 is connected with the furnace body 91 in an openable and closable manner, the wind collecting shell 40 is fixedly arranged in the furnace body 91, the third heat shield 130 is fixedly connected with the furnace cover 92, and when the cooling of the workpiece in the workpiece hot field area 140 is finished, the furnace cover 92 is opened and the third heat shield 130 can be opened together, so that the workpiece can be taken out from the workpiece hot field area 140.

The heat exchange shell 160 is fixedly arranged in the furnace body 90, the heat exchanger 150 is fixedly arranged in the heat exchange shell 160, the heat exchange shell 160 is provided with an air inlet 161 communicated with the interior of the furnace body 90, the heat exchange shell 160 is also provided with an air outlet 162 communicated with the air collecting shell 40, the heat exchanger 150 can adopt a tubular medium heat exchanger, and when a workpiece in the workpiece thermal field area 140 is cooled, a cooling medium is introduced into the heat exchanger 150.

The implementation principle of the air cooling system of the vacuum furnace in the embodiment is as follows: when the workpiece in the workpiece thermal field region 140 needs to be cooled, a cooling medium is introduced into the heat exchanger 150, meanwhile, the impeller 110 is driven to rotate by the motor 100, so that a part of cooling air flow in the air collecting shell 40 enters the air pipeline 10 and is blown into the workpiece thermal field region 140 from the first air nozzle 20, another part of cooling air flow in the air collecting shell 40 is blown into the workpiece thermal field region 140 through the second air nozzle 70, the workpiece in the workpiece thermal field region 140 is cooled, cooled air is blown into the furnace body 90 from the gap 170 between the third heat shield 130 and the second heat shield 120, enters the heat exchanging shell 160 through the air inlet 161, exchanges heat with the heat exchanger 150 and cools, and the cooled air flow enters the air collecting shell 40 through the air outlet 162, so that the air flow in the furnace body 90 circulates.

The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a vacuum furnace air-out structure, its characterized in that includes wind pipe (10) and first tuyere (20), be equipped with first tuyere (11) on the lateral wall of wind pipe (10), first tuyere (20) are one end confined one end open-ended cylindric, the blind end of first tuyere (20) with the lateral wall laminating of wind pipe (10) first tuyere (11) department, the blind end of first tuyere (20) is equipped with second tuyere (21), first tuyere (20) with wind pipe (10) are connected, and can be for wind pipe (10) removal, works as first tuyere (20) for when wind pipe (10) remove, second tuyere (21) can with first tuyere (11) coincidence or stagger.

2. The vacuum furnace air outlet structure according to claim 1, further comprising a locking assembly (30), wherein the locking assembly (30) is connected to the air duct (10) and the first tuyere (20), and wherein the locking assembly (30) is configured to restrict the movement of the first tuyere (20) relative to the air duct (10).

3. The vacuum furnace air outlet structure according to claim 1, further comprising an air collecting shell (40) and a guide cover (50), wherein the air pipeline (10) is fixedly arranged on the air collecting shell (40) and is communicated with the air collecting shell (40), the air pipeline (10) is in matrix arrangement, the guide cover (50) is fixedly arranged in the air collecting shell (40), and communication ports of the air pipeline (10) and the air collecting shell (40) are arranged around the guide cover (50).

4. A vacuum furnace air-out structure according to claim 3, further comprising a first heat shield (60), a second air nozzle (70) and an air shielding plate (80), wherein the first heat shield (60) is fixedly arranged on the air collecting shell (40), the second air nozzle (70) is fixedly arranged on the first heat shield (60) in a penetrating manner and communicated with the inside of the air collecting shell (40), and the air shielding plate (80) is fixedly arranged on the second air nozzle (70) and is arranged at an interval with one end, away from the air collecting shell (40), of the second air nozzle (70).

5. The vacuum furnace air-cooling system comprises the vacuum furnace air-out structure according to claim 4, and further comprises a furnace body (90), a motor (100) and an impeller (110), wherein the motor (100) is fixedly arranged on the furnace body (90), the air collecting shell (40) is fixedly arranged in the furnace body (90), an output shaft of the motor (100) extends into the air collecting shell (40), the impeller (110) is arranged in the air collecting shell (40) and fixedly connected with the output shaft, and the air pipeline (10) is arranged in the furnace body (90).

6. The vacuum furnace air cooling system according to claim 5, further comprising a second heat shield (120) and a third heat shield (130), wherein one end of the second heat shield (120) is fixedly connected with the first heat shield (60), the third heat shield (130) is fixedly arranged in the furnace body (90), the third heat shield (130) is arranged at a distance from the other end of the second heat shield (120), a workpiece thermal field region (140) is formed by enclosing between the first heat shield (60), the second heat shield (120) and the third heat shield (130), and the first tuyere (20) penetrates through the second heat shield (120) and is communicated with the interior of the workpiece thermal field region (140).

7. The vacuum furnace air cooling system according to claim 5, further comprising a heat exchanger (150) and a heat exchange shell (160), wherein the heat exchange shell (160) is fixedly arranged in the furnace body (90), the heat exchanger (150) is fixedly arranged in the heat exchange shell (160), the heat exchange shell (160) is provided with an air inlet (161) communicated with the interior of the furnace body (90), and the heat exchange shell (160) is further provided with an air outlet (162) communicated with the air collecting shell (40).

8. The vacuum furnace air cooling system according to claim 6, wherein the furnace body (90) comprises a furnace body (91) and a furnace cover (92), the furnace cover (92) is connected with the furnace body (91) in an openable and closable manner, the air collecting shell (40) is fixedly arranged in the furnace body (91), and the third heat shield (130) is fixedly connected with the furnace cover (92).