阅读说明：本技术 一种耐热效果好的数控风机机壳 (Numerical control fan casing that heat-resisting effect is good ) 是由 傅强 杨从贵 管照正 彭拥军 王晓松 周玉红 徐经存 于 2020-06-10 设计创作，主要内容包括：本发明公开了一种耐热效果好的数控风机机壳,包括风机机壳主体、电池安装壳、减震底座、涡流制冷器、内置散热板、减震弹簧、不锈钢基材和冷却管,所述风机机壳主体的两端分别固定安装有第一安装板与第二安装板,所述第一安装板与第二安装板之间固定安装有风机机壳主体,所述第一安装板与第二安装板之间固定安装有涡流制冷器与电池安装壳；本发明通过安装有螺旋状冷却管,该冷却液可在螺旋状冷却管内进行快速流动,对于风机机壳外部散发的热量进行快速吸收,从而也可快速对机壳温度进行降低,且在风机机壳内安装有内置散热板,可有效辅助冷却管对于该风机机壳进行快速冷却降温散热处理,将机壳上的热量快速散去,使机壳具有良好的耐热效果。(The invention discloses a numerical control fan shell with a good heat-resisting effect, which comprises a fan shell main body, a battery installation shell, a damping base, an eddy current refrigerator, a built-in heat dissipation plate, a damping spring, a stainless steel base material and a cooling pipe, wherein a first installation plate and a second installation plate are fixedly installed at two ends of the fan shell main body respectively; the cooling device is provided with the spiral cooling pipe, the cooling liquid can flow in the spiral cooling pipe rapidly, heat emitted from the outside of the fan shell is absorbed rapidly, the temperature of the shell can be reduced rapidly, the fan shell is internally provided with the built-in heat dissipation plate, the cooling pipe can be effectively assisted to carry out rapid cooling, cooling and heat dissipation treatment on the fan shell, heat on the shell is dissipated rapidly, and the shell has a good heat-resistant effect.)

1. The utility model provides a heat-resisting effectual numerical control fan casing, includes fan casing main part (4), battery installation shell (7), vibration damping mount (8), vortex refrigerator (9), built-in heating panel (12), damping spring (19), stainless steel base material (24) and cooling tube (27), its characterized in that: a first mounting plate (1) and a second mounting plate (2) are fixedly mounted at two ends of the fan casing main body (4) respectively, the fan casing main body (4) is fixedly mounted between the first mounting plate (1) and the second mounting plate (2), an eddy current refrigerator (9) and a battery mounting shell (7) are fixedly mounted between the first mounting plate (1) and the second mounting plate (2), a built-in storage battery is detachably mounted in the battery mounting shell (7), the eddy current refrigerator (9) is connected with the fan casing main body (4) through a refrigerating pipe (11), and a built-in heat dissipation plate (12) is fixedly mounted on the inner wall of the fan casing main body (4);

a cooling pipe (27) is fixedly installed in an inner cavity of the fan casing main body (4), the first installation plate (1) is movably installed inside the damping base (8), an installation inner cavity (18) is formed inside the damping base (8), a damping spring (19) and a vibration limiting rod (17) are fixedly installed inside the installation inner cavity (18), a guide rail (16) is fixedly installed on the inner wall of the installation inner cavity (18), the first installation plate (1) is in sliding connection with the guide rail (16) through a guide groove formed in the side wall of the first installation plate, a stainless steel base material (24) is arranged inside the fan casing main body (4), a temperature-resistant material layer (23) is arranged on one side of the stainless steel base material (24), a corrosion-resistant material layer (22) is arranged on one side of the temperature-resistant material layer (23), and an oxidation-resistant material layer (21) is arranged on one side of, and a wear-resistant material layer (20) is arranged on the outer surface of the fan shell main body (4), and the vortex refrigerator (9) is electrically connected with the built-in storage battery.

2. The casing of the numerical control fan with good heat resistance according to claim 1, wherein the top of the first mounting plate (1) and the top of the second mounting plate (2) are both fixedly provided with a telescopic handle (3), and the first mounting plate (1) and the second mounting plate (2) are consistent in size and specification.

3. The casing of a numerically controlled fan with good heat resistance according to claim 1, wherein the first mounting plate (1) and the second mounting plate (2) are fixedly connected through a connecting shaft (5).

4. The casing of the numerically controlled fan with good heat resistance effect according to claim 1, wherein the casing cover (6) is detachably mounted on the outside of the battery mounting casing (7) through a buckle.

5. The casing of a digitally controlled fan with good heat resistance according to claim 1, characterized in that two vortex refrigerators (9) are symmetrically installed about the longitudinal central axis of the first mounting plate (1) and the second mounting plate (2), and the vortex refrigerators (9) are connected with the built-in storage battery installed inside the battery mounting casing (7) through wires.

6. The numerical control fan casing with good heat resistance effect according to claim 1, wherein a refrigerating port (13) is fixedly installed on the inner wall of the fan casing main body (4), and one end of the refrigerating pipe (11) is connected with the refrigerating port (13).

7. The casing of a numerically controlled fan with good heat resistance as claimed in claim 1, wherein the inner wall of the internal heat dissipation plate (12) is provided with an air guide groove (14).

8. The casing of the numerical control fan with good heat resistance according to claim 1, wherein the cooling pipe (27) is spiral, two ends of the cooling pipe (27) respectively penetrate through and extend to the upper part and the lower part of the outer side of the casing body (4) of the fan, a cooling liquid adding pipe (10) and a cooling liquid outlet pipe (15) are respectively and fixedly installed on the upper part and the lower part of the outer side of the casing body (4) of the fan, and a pipe cover (25) is installed on the cooling liquid adding pipe (10) and the cooling liquid outlet pipe (15) through a connecting belt.

9. The casing of a numerical control fan with good heat resistance according to claim 1, wherein an upper limiting plate (26) is fixedly mounted on the outer wall of one side of the first mounting plate (1), and the upper limiting plate (26) is connected with the inner wall of the damping base (8) in a sliding manner.

10. The casing of a numerically controlled blower with good heat resistance as claimed in claim 1, wherein the height of the damping spring (19) is higher than that of the vibration limiting rod (17).

Technical Field

The invention belongs to the field of numerical control fans, and particularly relates to a numerical control fan shell with a good heat-resisting effect.

Background

The fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. The fan is a Chinese habit for gas compression and gas conveying machinery for short, the applicable fields of the fan are many, the types of the fan also include various, the fan generally comprises a ventilator, a blower and a wind driven generator, and the fan is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and ventilation and induced air of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; the drying and the sorting of grains, the air source of the wind tunnel, the inflation and the propulsion of the air cushion boat and the like, and the function of the fan is huge.

A numerical control fan is a category of fans, according to (CN201820835271.2) a heat-resistant, moisture-resistant, flame-retardant and fireproof fan heater shell provided by Chinese patent, when the device is used for heating a certain area in a centralized way, a first screw rod is rotated to drive a threaded sleeve to move, then the threaded sleeve drives a movable baffle to move, a plastic plate stretches out to block a part of an air outlet of a fan heater shell body, and finally heat is concentrated to one position, so that the heating efficiency of the fan heater shell is greatly improved, the insufficient heat utilization is avoided, the energy consumption is reduced, but no damping structure is arranged on the device, in the use process of the fan shell, if the shell vibrates, the vibration cannot be weakened or eliminated, the condition that parts in the fan shell are loosened for a long time is caused, and the stability of part installation in the fan shell is reduced, and the device does not install the cooling tube in inside, in fan casing use, can't carry out rapid cooling heat dissipation to fan casing and handle, and the functionality is not good, needs to carry out certain improvement.

Disclosure of Invention

The invention aims to provide a numerical control fan shell with good heat-resisting effect, which aims to solve the problem that the numerical control fan proposed in the background technology is a type of fan, according to (CN201820835271.2) a heat-resisting, moisture-resisting, flame-retardant and fireproof fan heater shell provided by Chinese patent, when the device is used for heating a certain area in a centralized way, a first screw rod is rotated to drive a threaded sleeve to move, then the threaded sleeve drives a movable baffle plate to move, and a plastic plate is stretched to block a part of an air outlet of a fan heater shell body, so that heat is concentrated at one position, the heating efficiency of the fan heater shell is greatly improved, the insufficient heat utilization is avoided, the energy consumption is reduced, but no damping structure is arranged on the device, and in the use process of the fan shell, if the vibration of the shell occurs, the vibration cannot be weakened or eliminated, so can lead to the not hard up condition of part in the fan casing for a long time, reduce the stability of part installation in the fan casing, and the device does not install the cooling tube in inside, in fan casing use, can't carry out rapid cooling heat dissipation to the fan casing and handle, the not good problem of functional.

In order to achieve the purpose, the invention provides the following technical scheme:

a numerical control fan shell with a good heat-resisting effect comprises a fan shell main body, a battery installation shell, a damping base, an eddy current refrigerator, a built-in heat dissipation plate, a damping spring, a stainless steel base material and a cooling pipe, wherein a first installation plate and a second installation plate are fixedly installed at two ends of the fan shell main body respectively;

the utility model discloses a fan casing, including fan casing main part, first mounting panel movable mounting has a cooling tube in the inner chamber of fan casing main part, first mounting panel movable mounting is in vibration damping mount's inside, vibration damping mount's inside has seted up the installation inner chamber, the inside fixed mounting of installation inner chamber has damping spring and vibrations gag lever post, fixed mounting has the guide rail on the inner wall of installation inner chamber, first mounting panel is through the guide slot and the guide rail sliding connection of seting up on its lateral wall, the inside of fan casing main part is provided with stainless steel base material, one side of stainless steel base material is provided with the temperature resistant material layer, temperature resistant material layer one side is provided with the corrosion resistant material layer, one side of corrosion resistant material layer is provided with the anti-oxidant.

As a further scheme of the invention: the top of first mounting panel and second mounting panel is equal fixed mounting has flexible handle, and the big or small specification of first mounting panel and second mounting panel is unanimous.

As a further scheme of the invention: the first mounting plate and the second mounting plate are fixedly connected through a connecting shaft.

As a further scheme of the invention: the outside of battery installation shell passes through buckle demountable installation and has the cap.

As a further scheme of the invention: two vortex refrigerators are symmetrically arranged around the longitudinal central axes of the first mounting plate and the second mounting plate, and the vortex refrigerators are connected with a built-in storage battery arranged in the battery mounting shell through a lead.

As a further scheme of the invention: the inner wall of the fan shell main body is fixedly provided with a refrigerating port, and one end of the refrigerating pipe is connected with the refrigerating port.

As a further scheme of the invention: and an air guide groove is formed in the inner wall of the built-in heat dissipation plate.

As a further scheme of the invention: the cooling tube is the heliciform, and the cooling tube both ends pass respectively and extend to the outside top and the below of fan casing main part and fixed mounting respectively has coolant liquid to add pipe and coolant liquid exit tube, install the tube cap through the connecting band on coolant liquid adds pipe and the coolant liquid exit tube.

As a further scheme of the invention: and an upper limiting plate is fixedly mounted on the outer wall of one side of the first mounting plate and is connected with the inner wall of the damping base in a sliding manner.

As a further scheme of the invention: the height of the damping spring is higher than that of the vibration limiting rod.

Compared with the prior art, the vortex refrigerator is externally installed, compared with the traditional refrigerator, the vortex refrigerator is small in structure, convenient to install and not heavy, and when the vortex refrigerator can be used for the fan shell, some cooling air is provided to rapidly cool the fan shell, so that the low temperature of the whole fan shell is ensured, and the using effect is good;

the spiral cooling pipe is arranged in the fan shell, and sufficient cooling liquid is added into the spiral cooling pipe, so that the cooling liquid can flow in the spiral cooling pipe rapidly in the use process of the fan shell, and the heat emitted from the outside of the fan shell is absorbed rapidly while flowing, so that the temperature of the shell can be reduced rapidly;

according to the fan casing, the anti-oxidation material layer, the corrosion-resistant material layer and the temperature-resistant material layer are arranged in the fan casing, so that the anti-corrosion property and the anti-oxidation property in the fan casing can be effectively improved through the anti-oxidation material layer and the corrosion-resistant material layer, the oxidation and corrosion of the casing are avoided, the overall service life of the fan casing is prolonged, and the temperature resistance of the fan casing can be effectively improved through the temperature-resistant material layer;

according to the invention, the damping base is arranged at the bottom, and the damping spring and the damping limiting rod are arranged in the damping base, so that when the fan shell is used, the damping spring can effectively weaken or eliminate the vibration of the fan shell when the fan shell is used, the condition that parts in the fan shell are loosened due to long-term vibration of the fan shell is avoided, in the damping process, the damping limiting rod can effectively limit the amplitude of the fan shell, and the condition that the fan shell is more and more vibrated due to the bouncing damping spring in the damping process is avoided.

Drawings

Fig. 1 is a schematic perspective view of a numerical control fan casing with a good heat-resistant effect.

Fig. 2 is a top view of a numerically controlled fan casing with good heat resistance.

Fig. 3 is a partial sectional view of a main view of a housing of a numerically controlled fan with a good heat-resisting effect.

Fig. 4 is a schematic diagram of a side view of an internal structure of a housing of a numerically controlled fan with a good heat-resistant effect.

Fig. 5 is an enlarged schematic structural diagram of a position a in a housing of a numerically controlled fan with a good heat-resisting effect.

Fig. 6 is a schematic cross-sectional structural view of a material of a main body of a fan casing in a numerically controlled fan casing with a good heat-resistant effect.

In the figure: 1. a first mounting plate; 2. a second mounting plate; 3. a telescopic handle; 4. a fan housing main body; 5. a connecting shaft; 6. a shell cover; 7. a battery mounting case; 8. a damping mount; 9. a vortex refrigerator; 10. a coolant addition tube; 11. a refrigeration pipe; 12. a built-in heat dissipation plate; 13. a refrigeration port; 14. a wind guide groove; 15. a coolant outlet pipe; 16. a guide rail; 17. vibrating the limiting rod; 18. installing an inner cavity; 19. a damping spring; 20. a wear resistant material layer; 21. an oxidation resistant material layer; 22. a layer of corrosion resistant material; 23. a temperature-resistant material layer; 24. a stainless steel base material; 25. a tube cover; 26. an upper limiting plate; 27. and (7) cooling the tube.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-6, a numerically controlled fan housing with good heat resistance effect comprises a fan housing main body 4, a battery mounting case 7, a damping base 8, a vortex refrigerator 9, a built-in heat dissipation plate 12, a damping spring 19, a stainless steel base material 24 and a cooling pipe 27, wherein a first mounting plate 1 and a second mounting plate 2 are respectively fixedly mounted at two ends of the fan housing main body 4, the fan housing main body 4 is fixedly mounted between the first mounting plate 1 and the second mounting plate 2, the vortex refrigerator 9 and the battery mounting case 7 are fixedly mounted between the first mounting plate 1 and the second mounting plate 2, a built-in storage battery is detachably mounted inside the battery mounting case 7, the vortex refrigerator 9 is connected with the fan housing main body 4 through a cooling pipe 11, and the built-in heat dissipation plate 12 is fixedly mounted on the inner wall of the fan housing main body 4;

a cooling pipe 27 is fixedly installed in an inner cavity of the fan casing main body 4, the first installation plate 1 is movably installed inside a damping base 8, an installation inner cavity 18 is formed inside the damping base 8, a damping spring 19 and a vibration limiting rod 17 are fixedly installed inside the installation inner cavity 18, a guide rail 16 is fixedly installed on the inner wall of the installation inner cavity 18, the first installation plate 1 is in sliding connection with the guide rail 16 through a guide groove formed in the side wall of the first installation plate, a stainless steel base material 24 is arranged inside the fan casing main body 4, a temperature-resistant material layer 23 is arranged on one side of the stainless steel base material 24, a corrosion-resistant material layer 22 is arranged on one side of the temperature-resistant material layer 23, an oxidation-resistant material layer 21 is arranged on one side of the corrosion-resistant material layer 22, a wear-resistant material layer 20 is arranged on the outer surface of the, the wear-resistant material layer 20 greatly improves the wear resistance of the outer surface of the casing, the casing is not prone to scratching and abrasion, the oxidation resistance and the corrosion resistance of the casing are improved through the oxidation-resistant material layer 21 and the corrosion-resistant material layer 22, the service life of the casing is prolonged, and the vortex refrigerator 9 is electrically connected with the built-in storage battery.

The technical characteristics are as follows: when the fan shell needs to be transported or moved, the telescopic handle 3 can be directly pulled out to move, when the fan is used, disturbance air flow generated by rotation of fan blades can be orderly transmitted to the outside through the air guide groove 14, the uniformity of air volume and the air outlet effect are improved, a proper amount of cooling liquid is added into the cooling pipe 27 through the cooling liquid adding pipe 10, the cooling liquid can be conducted through the spiral cooling pipe 27, good cooling is carried out in the fan shell main body 4, a good heat absorption effect is provided, the cooling liquid can be discharged through the cooling liquid outlet pipe 15 after a period of time, the cooling liquid is replaced, the built-in heat dissipation plate 12 can well absorb heat generated by the fan, the cooling and heat dissipation effects are achieved, and in the use process of the fan shell, due to the work of the motor and the flying rotation of the fan blades, the first mounting plate 1 and the second mounting plate 2 can vibrate up and down, damping spring 19 can carry out shock attenuation processing to first mounting panel 1 and second mounting panel 2 this moment, in shock attenuation process, vibrations gag lever post 17 can be injectd the lower limit of first mounting panel 1 and the vibrations of second mounting panel 2, and go up the limiting plate 26 on first mounting panel 1 and second mounting panel 2 and can reciprocate on vibration damping mount 8's inner wall, and go up limiting plate 26 and can carry out the distance to the last removal of first mounting panel 1 and second mounting panel 2 and inject, avoid appearing breaking away from vibration damping mount 8, play good cushioning effect, temperature resistant material layer 23 has improved the whole heat resistance of this casing, wear resistant material layer 20 has improved the surface wearability of this casing greatly, be difficult for scraping flower wearing and tearing, oxidation resistant material layer 21 and corrosion resistant material layer 22 have improved the anti-oxidation and the corrosion resistance of this casing, the life of this casing has been improved.

Referring to fig. 1-2, the top of the first mounting plate 1 and the top of the second mounting plate 2 are both fixedly mounted with a telescopic handle 3, and the first mounting plate 1 and the second mounting plate 2 have the same size and specification, by mounting the telescopic handle 3, when the blower housing needs to be transported or moved, the telescopic handle 3 can be directly pulled out to move, by designing the first mounting plate 1 and the second mounting plate 2 to have the same size and specification, when the device is integrally placed in a working area, the placing stability can be maintained, the first mounting plate 1 and the second mounting plate 2 are fixedly connected by a connecting shaft 5, by fixedly connecting the first mounting plate 1 and the second mounting plate 2 by the connecting shaft 5, the connecting shaft 5 can make the first mounting plate 1 and the second mounting plate 2 well and stably connected, the housing cover 6 is detachably mounted outside the battery housing 7 by a buckle, through installing cap 6, this cap 6 can be effectively to the built-in battery of 7 internally mounted of battery installation shell carry out good saving and protection, vortex refrigerator 9 is installed two about the longitudinal center pin symmetry of first mounting panel 1 with second mounting panel 2, and vortex refrigerator 9 passes through the wire with the built-in battery of 7 internally mounted of battery installation shell and is connected, through installing double vortex refrigerator 9, can effectively improve vortex refrigerator 9's refrigeration effect, pass through the wire through making vortex refrigerator 9 and 7 internally mounted's of battery installation shell be connected, thereby can effectively make vortex refrigerator 9 circular telegram, be convenient for use vortex refrigerator 9.

Referring to fig. 2-3, a refrigerating port 13 is fixedly installed on an inner wall of the fan casing main body 4, one end of the refrigerating pipe 11 is connected to the refrigerating port 13, the refrigerating port 13 is installed, one end of the refrigerating pipe 11 is connected to the refrigerating port 13, the vortex refrigerator 9 can refrigerate after being started, cold air is effectively sent into the refrigerating port 13 through the refrigerating pipe 11 and finally enters the fan casing main body 4 to be cooled in the fan casing main body 4, an air guide groove 14 is formed in an inner wall of the built-in heat dissipation plate 12, and by forming the air guide groove 14, when the fan casing is used, disturbance air flow generated by rotation of fan blades can be orderly transmitted to the outside through the air guide groove 14, so that the uniformity of the air flow and the air outlet effect are improved.

Referring to fig. 1 to 4, the cooling pipe 27 is spiral, two ends of the cooling pipe 27 respectively penetrate through and extend to the upper and lower portions of the outer side of the fan housing main body 4, and are respectively and fixedly provided with the cooling liquid inlet pipe 10 and the cooling liquid outlet pipe 15, the cooling liquid inlet pipe 10 and the cooling liquid outlet pipe 15 are respectively provided with the pipe cover 25 through a connecting belt, by designing the cooling pipe 27 to be spiral, when cooling is performed, the cooling liquid can be conducted through the spiral cooling pipe 27, so as to perform good cooling in the fan housing main body 4 and provide good heat absorption effect, by respectively penetrating through and extending to the upper and lower portions of the outer side of the fan housing main body 4 at two ends of the cooling pipe 27 and respectively and fixedly provided with the cooling liquid inlet pipe 10 and the cooling liquid outlet pipe 15, a proper amount of cooling liquid can be added to the cooling pipe 27 through the cooling liquid inlet pipe 10, and the cooling liquid can be discharged, the cooling liquid is replaced, the pipe cover 25 is installed, the pipe cover 25 can effectively open and close the cooling liquid adding pipe 10 and the cooling liquid outlet pipe 15, an upper limiting plate 26 is fixedly installed on the outer wall of one side of the first mounting plate 1, the upper limiting plate 26 is in sliding connection with the inner wall of the damping base 8, the upper limiting plate 26 is installed and is in sliding connection with the inner wall of the damping base 8, in the use process of the fan shell, the first mounting plate 1 and the second mounting plate 2 can vibrate up and down, the upper limiting plate 26 can move up and down on the inner wall of the damping base 8, the upper limiting plate 26 can limit the distance of the upward movement of the first mounting plate 1 and the second mounting plate 2 to avoid the separation from the damping base 8, the height of the damping spring 19 is higher than that of the vibration limiting rod 17, and the height of the damping spring 19 is higher than that of the vibration limiting rod 17, damping spring 19 can carry out earlier shock attenuation to first mounting panel 1 and second mounting panel 2 and handle, and vibrations gag lever post 17 can be injectd the lower limit of first mounting panel 1 with the vibrations of second mounting panel 2.

It should be noted that: the built-in heat dissipation plate 12 may be a copper plate, the wear-resistant material layer 20 may be made of polyurethane, the oxidation-resistant material layer 21 may be made of silicon dioxide, and the corrosion-resistant material layer 22 may be made of polytetrafluoroethylene.

The working principle of the invention is as follows: when the fan shell needs to be transported or moved, the telescopic handle 3 can be directly pulled out to move, when the fan is used, disturbance air flow generated by rotation of fan blades can be orderly transmitted to the outside through the air guide groove 14, the uniformity of air volume and the air outlet effect are improved, a proper amount of cooling liquid is added into the cooling pipe 27 through the cooling liquid adding pipe 10, the cooling liquid can be conducted through the spiral cooling pipe 27, good cooling is carried out in the fan shell main body 4, a good heat absorption effect is provided, the cooling liquid can be discharged through the cooling liquid outlet pipe 15 after a period of time, the cooling liquid is replaced, the built-in heat dissipation plate 12 can well absorb heat generated by the fan, the cooling and heat dissipation effects are achieved, and in the use process of the fan shell, due to the work of the motor and the flying rotation of the fan blades, the first mounting plate 1 and the second mounting plate 2 can vibrate up and down, damping spring 19 can carry out shock attenuation processing to first mounting panel 1 and second mounting panel 2 this moment, in shock attenuation process, vibrations gag lever post 17 can be injectd the lower limit of first mounting panel 1 and the vibrations of second mounting panel 2, and go up the limiting plate 26 on first mounting panel 1 and second mounting panel 2 and can reciprocate on vibration damping mount 8's inner wall, and go up limiting plate 26 and can carry out the distance to the last removal of first mounting panel 1 and second mounting panel 2 and inject, avoid appearing breaking away from vibration damping mount 8, play good cushioning effect, temperature resistant material layer 23 has improved the whole heat resistance of this casing, wear resistant material layer 20 has improved the surface wearability of this casing greatly, be difficult for scraping flower wearing and tearing, oxidation resistant material layer 21 and corrosion resistant material layer 22 have improved the anti-oxidation and the corrosion resistance of this casing, the life of this casing has been improved.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.