CN210781743U - Sealing structure of frequency converter shell - Google Patents
Sealing structure of frequency converter shell Download PDFInfo
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- CN210781743U CN210781743U CN201921833208.6U CN201921833208U CN210781743U CN 210781743 U CN210781743 U CN 210781743U CN 201921833208 U CN201921833208 U CN 201921833208U CN 210781743 U CN210781743 U CN 210781743U
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- shell
- sealing
- mounting opening
- rubber strip
- frequency converter
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Abstract
A shell sealing structure of a frequency converter comprises a shell, wherein a window is arranged on the shell; the chamfer angle of the mounting opening is arc-shaped, and the edge of the mounting opening is provided with a flanging; a sealing rubber strip is arranged on the mounting opening, and a cover plate is arranged on the mounting opening; the outer wall of the shell where the heat dissipation port is located is provided with a mounting groove, and the mounting groove is connected end to end and surrounds the heat dissipation port for a circle; and a sealing ring is arranged in the mounting groove, and a radiating fin is arranged on the radiating port and pressed on the sealing ring. The sealing structure of the frequency converter shell enables the flanging chamfering position to be arc-shaped by arranging the arc-shaped chamfering on the mounting opening, and the sealing rubber strip mounted on the flanging is also bent in an arc shape, so that the sealing rubber strip is prevented from being excessively extruded due to right-angle bending, the sealing rubber strip is prevented from being broken after being used for a long time, the stability of a waterproof structure is enhanced, and the service life of the sealing rubber strip is prolonged.
Description
Technical Field
The utility model belongs to the mechanical equipment field especially relates to a converter shell seal structure.
Background
The frequency conversion all-in-one machine often needs to be in the open air, in the pit etc. have rainwater or comparatively moist operational environment, in order to guarantee that equipment normally works, need have waterproof performance, owing to have numerous electrical components, the frequency converter part then is waterproof dirt-proof key.
Because electrical components package assembly is complicated to calorific capacity is huge, need set up the opening on the casing of converter to electrical components overhauls in the casing, perhaps install the radiator and dispel the heat to electrical components in the casing, consequently converter opening position need carry out water repellent.
At present, a sealing structure arranged on a frequency converter shell is mainly characterized in that a rubber pad is arranged between a radiating fin and the outer wall of the frequency converter shell, and a sealing strip is arranged at the edge of an opening of an installation cover plate. After the equipment is used for a long time, the surface of the radiating fin is always parallel to the surface of the shell of the frequency converter, and a part of the rubber pad is easy to become thin due to aging deformation, so that a gap is formed, and water leakage is caused. In addition, because the opening is square, the sealing strips are arranged along the edge of the opening, and the sealing strips on the four corners of the opening need to be bent at right angles, so that extrusion is caused, and after the sealing strip is used for a long time, the extruded part of the sealing strip is easy to break, so that water leakage is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that current converter shell seal structure is easy ageing, waterproof performance is unstable, provide a converter shell seal structure of stable performance.
In order to achieve the above object, the utility model discloses a technical scheme be:
a shell sealing structure of a frequency converter comprises a shell, wherein a window is arranged on the shell;
the window comprises a mounting opening and a heat dissipation opening;
the chamfer between the adjacent side edges of the mounting opening is arc-shaped, and the edge of the mounting opening is provided with a flanging bent outwards;
the mounting opening is provided with a sealing rubber strip, the sealing rubber strip is provided with a U-shaped connecting part and a hollow elastic part, the elastic part is fixedly arranged on one side of the connecting part, and the connecting part is inserted and connected to a flanging of the mounting opening;
the mounting opening is provided with a cover plate which is fixedly connected with the shell and pressed on the elastic part of the sealing rubber strip;
the outer wall of the shell where the heat dissipation port is located is provided with a mounting groove, the mounting groove is located on the outer side of the heat dissipation port and is connected end to surround the heat dissipation port for a circle;
the mounting groove is internally provided with a sealing ring, the radiating opening is provided with a radiating fin, and a bottom plate arranged on one side of the radiating fin is fixedly connected with the shell and pressed on the sealing ring.
Preferably, a fin is arranged on the inner wall of the connecting part of the sealing rubber strip, and the fin inclines towards a direction far away from the opening of the connecting part.
Preferably, the elastic portion has a C-shaped cross section.
Preferably, the surface of the bottom plate is attached to the outer wall of the housing.
Preferably, the heat sink is aligned with the heat-dissipating opening.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
1. the sealing structure of the frequency converter shell enables the flanging chamfering position to be arc-shaped by arranging the arc-shaped chamfering on the mounting opening, and the sealing rubber strip mounted on the flanging is also bent in an arc shape, so that the sealing rubber strip is prevented from being excessively extruded due to right-angle bending, the sealing rubber strip is prevented from being broken after being used for a long time, the stability of a waterproof structure is enhanced, and the service life of the sealing rubber strip is prolonged. In addition, the flanging heightens the edge of the mounting opening and forms a drainage groove to prevent water flowing along the outer wall of the shell from flowing into the mounting opening and flowing downwards along the drainage groove, so that the waterproof performance is improved.
2. The sealing washer is installed in the mounting groove, reduces the occupation of sealing washer to the space between casing and the fin, makes the sealing washer closely paste and lean on the bottom plate at the fin, and the bottom plate of fin can laminate housing face simultaneously, increases fin and housing face's laminating degree, not only strengthens heat conduction efficiency, improves heat dispersion, but also can avoid the production in gap, plays waterproof effect, reinforcing waterproof performance.
3. The inner wall of the connecting part of the sealing rubber strip is provided with the fin which can rub with the turned-over edge to block the connecting part from being separated, so that the fixing firmness of the sealing rubber strip is improved. The elastic part is C-shaped, so that the inner wall of the elastic part is circular, the surface is smooth, the inner wall is difficult to crack after deformation, and the structural stability of the sealing rubber strip is improved.
4. The radiating fins are aligned with the radiating holes, so that heat in the shell can be directly transmitted to the whole radiating fins through the bottom plate, the radiating in the shell is accelerated, and the radiating performance is improved.
Drawings
Fig. 1 is an explosion structure diagram of the sealing structure of the transducer housing of the present invention;
FIG. 2 is a cross-sectional view of a sealing rubber strip in the sealing structure of the transducer housing of the present invention;
in the above figures: 1. a housing; 11. mounting grooves; 2. an installation port; 21. flanging; 3. a heat dissipation port; 4. sealing rubber strips; 41. a connecting portion; 42. an elastic portion; 43. a fin; 5. a cover plate; 6. a seal ring; 7. a heat sink; 71. a base plate.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 2, the utility model provides a frequency converter shell sealing structure, which comprises a shell 1.
The housing 1 is provided with a window for communicating the space inside the housing 1 with the space outside the housing 1.
The window includes a mounting opening 2 and a heat sink opening 3.
Electrical components can be mounted in the housing 1 through the mounting port 2, or electrical components mounted in the housing 1 can be inspected.
The heat in the case 1 can be directly transferred to the heat radiation plate 7 and the heat radiation fins 8 attached to the case 1 through the heat radiation port 3.
The chamfer angle between the adjacent sides of the mounting opening 2 is arc-shaped, namely the included angle between the straight edges of the mounting opening 2 is transited through the arc-shaped chamfer angle.
The edge of the mounting opening 2 is provided with a flange 21 bent outward, thereby forming a groove opened outward on the outer wall of the housing 1.
As the straight edges of the mounting opening 2 are in circular arc smooth transition, the shape of the flanging 21 is the same as that of the edge of the mounting opening 2, and the straight parts are in circular arc smooth transition.
The mounting opening 2 is provided with a sealing rubber strip 4.
The bead 4 is provided with a U-shaped connecting portion 41 and a hollow elastic portion 42.
The elastic part 42 is fixedly arranged on one side of the connecting part 41, and the connecting part 41 is inserted on the flanging 21 of the mounting opening 2.
Joint strip 4 sets up along turn-ups 21, and around installing port 2 a week, the edge is convex smooth transition, can not produce the right angle to make joint strip 4 can not receive the extrusion that the bending led to the fact.
The mounting opening 2 is provided with a cover plate 5, the cover plate 5 is fixedly connected with the shell 1 through common connecting pieces such as bolts and the like, and is pressed on the elastic part 42 of the sealing rubber strip 4.
The connecting part 41 is connected with the flanging 21 at the edge of the mounting port 2, and the elastic part 42 is hollow, so that the elastic part has larger elastic deformation amplitude and is tightly attached to the surface of the cover plate 5, and the sealing rubber strip 4 seals the gap between the cover plate 5 and the edge of the mounting port 2, thereby realizing water resistance and dust resistance.
Because the flange 21 is formed by being folded outwards, the flange 21 is raised relative to the surface of the shell 1. If the liquid flows along the surface of the shell 1, the liquid is blocked by the raised flanging 21 part and is difficult to flow into the mounting port, so that the liquid is prevented from entering the shell 1 and damaging the electric elements mounted in the shell 1.
And the groove structure formed by the turned-over edge 21 which is turned outwards can guide the blocked liquid to further flow and leave the surface of the shell.
Be provided with mounting groove 11 on the 1 outer wall of casing that thermovent 3 was located, mounting groove 11 end to end is the annular, is located the thermovent 3 outside to encircle thermovent 3.
A sealing ring 6 is arranged in the mounting groove 11, a radiating fin 7 is arranged on the radiating port 3, and a bottom plate 71 arranged on the radiating fin 7 is fixedly connected with the shell 1 through common connecting pieces such as bolts and the like and is pressed on the sealing ring 6.
The sealing ring 6 is in close contact with the inner wall of the mounting groove 11 and the bottom plate 71, so that the gap between the radiating fin 7 and the outer wall of the shell 1 is sealed, and water proofing is realized.
The surface of the radiating fin 7 can be directly contacted with the inner space of the shell 1 through the radiating port 3, so that heat in the shell 1 is directly transferred to the radiating fin 7, and the radiating fin 7 with better heat conductivity transfers the heat to the outside of the shell 1, thereby carrying out high-efficiency heat dissipation.
To further enhance the heat dissipation effect, the heat sink 8 is aligned with the heat dissipation opening 3.
Sealing washer 6 is located mounting groove 11, and the pressurized degree is little, and is difficult for ageing, can prolong waterproof construction life. And the sealing ring 6 is embedded and installed, so that the bottom plate 71 of the radiating fin 7 can be attached to the outer wall of the shell 1, the contact area is increased, the heat transfer efficiency is improved, and the heat of the shell 1 can be quickly transferred to the radiating fin 7. The radiating fins 7 are aligned with the radiating ports 3, so that the radiating efficiency of the direct contact part between the radiating fins 7 and the shell 1 is improved, and the heat transfer efficiency in the shell 1 is improved.
In order to improve the fixing firmness of the joint strip 4, the fins 43 are provided on the inner wall of the connecting portion 41 of the joint strip 4, and the fins 43 are inclined in a direction away from the opening of the connecting portion 41.
The fin 43 and the flanging 21 are contacted to generate friction force, the flanging 21 is prevented from being separated from the connecting portion 41, the fin 43 can swing towards the opening direction of the connecting portion 41, the fin 43 is pressed on the flanging 21 more tightly, the friction force between the fin 43 and the flanging 21 is increased, the separation difficulty of the flanging 21 from the connecting portion 41 is further increased, and the installation firmness of the sealing rubber strip 4 is improved.
In order to prolong the service life of the sealing rubber strip 4, the section of the elastic part 42 is in a C shape, and after the elastic part is attached to the connecting part 41 to form an integral structure, the space in the elastic part 42 is cylindrical, so that the inner wall of the elastic part 42 is a smooth surface and has no sharp corner, and the inner wall of the elastic part 42 cannot be torn due to the sharp corner after being deformed by pressure.
Claims (5)
1. The sealing structure of the shell of the frequency converter is characterized by comprising a shell (1), wherein a window is arranged on the shell (1);
the window comprises a mounting port (2) and a heat dissipation port (3);
the chamfer between the adjacent side edges of the mounting opening (2) is arc-shaped, and the edge of the mounting opening (2) is provided with a flanging (21) bent outwards;
a sealing rubber strip (4) is mounted on the mounting opening (2), the sealing rubber strip (4) is provided with a U-shaped connecting part (41) and a hollow elastic part (42), the elastic part (42) is fixedly arranged on one side of the connecting part (41), and the connecting part (41) is inserted into a flanging (21) of the mounting opening (2);
a cover plate (5) is arranged on the mounting opening (2), the cover plate (5) is fixedly connected with the shell (1) and pressed on an elastic part (42) of the sealing rubber strip (4);
an installation groove (11) is formed in the outer wall of the shell (1) where the heat dissipation port (3) is located, the installation groove (11) is located on the outer side of the heat dissipation port (3), and the installation groove is connected end to end and surrounds the heat dissipation port (3) for a circle;
install sealing washer (6) in mounting groove (11), install fin (7) on thermovent (3), bottom plate (71) and casing (1) rigid coupling that fin (7) one side set up to press on sealing washer (6).
2. The frequency converter housing seal structure according to claim 1, characterized in that fins (43) are provided on the inner wall of the connecting portion (41) of the joint strip (4), the fins (43) being inclined in a direction away from the opening of the connecting portion (41).
3. The converter housing seal structure according to claim 1, wherein the elastic portion (42) is C-shaped in cross section.
4. Frequency converter housing sealing structure according to claim 1, characterized in that the surface of the bottom plate (71) is applied against the outer wall of the housing (1).
5. Frequency converter housing sealing structure according to claim 1, characterized in that the heat sink (7) is aligned with the heat vent (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921833208.6U CN210781743U (en) | 2019-10-28 | 2019-10-28 | Sealing structure of frequency converter shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921833208.6U CN210781743U (en) | 2019-10-28 | 2019-10-28 | Sealing structure of frequency converter shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210781743U true CN210781743U (en) | 2020-06-16 |
Family
ID=71048992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921833208.6U Active CN210781743U (en) | 2019-10-28 | 2019-10-28 | Sealing structure of frequency converter shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210781743U (en) |
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2019
- 2019-10-28 CN CN201921833208.6U patent/CN210781743U/en active Active
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