CN218918657U - Film capacitor shell with good heat dissipation performance - Google Patents

Abstract

The utility model discloses a thin film capacitor shell with good heat dissipation performance, and relates to the technical field of thin film capacitors. The utility model comprises a shell and a core bag arranged in the shell, wherein a limiting mechanism is arranged between the surface of the core bag and the inner wall of the shell, a heat dissipation mechanism is arranged between the bottom of the core bag and the bottom of the shell, the limiting mechanism comprises a supporting ring fixedly arranged at the bottom of the shell and a clamping part arranged on the inner wall of the shell, the clamping part comprises an outer rod fixedly arranged on the inner wall of the shell, an inner rod with one end movably arranged in the outer rod, and a telescopic spring arranged between the outer rod and the end part of the inner rod, and the heat dissipation mechanism comprises a fixed ring fixedly arranged at the bottom of the inner side of the shell, a heat dissipation opening arranged on the side surface of the fixed ring and a ventilation opening arranged at the center of the bottom of the shell. According to the utility model, through the limiting mechanism and the heat dissipation mechanism, the service life of the film capacitor is prolonged, the phenomenon of film stripping caused by overhigh temperature of the core package is avoided, and the use requirement of people is met.

Description

Film capacitor shell with good heat dissipation performance

Technical Field

The utility model belongs to the technical field of film capacitors, and particularly relates to a film capacitor shell with good heat dissipation.

Background

Film capacitors, also called plastic film capacitors, which use plastic films as dielectrics, are excellent capacitors because they have many excellent characteristics.

The Chinese patent publication number is found by searching: CN209947665U discloses a film capacitor anti-unshelling structure, including aluminum hull, apron and core package, the vertical end top fixedly connected with solid fixed ring of aluminum hull, gu fixed ring in-the-loop surface wall is provided with concave block, gu fixed ring top be provided with apron integrated into one piece's holding ring, the constant head tank with concave block assorted is seted up to the holding ring bottom, the concave block passes through the constant head tank and is connected with the holding ring block. Through the design of concave block and constant head tank for after aluminium shell and apron combine, can prevent effectively that the casing from rotating, convenient assembly location, after the embedment material is fixed in addition, this structure can be big at the ambient temperature difference, can keep the fastness of structure under the abominable condition that vibration frequency is big, can effectively prevent the unshelling, thereby prevent effectively that dry-type direct current filter film capacitor from appearing unshelling phenomenon when the difference in temperature is great, improved dry-type direct current filter film capacitor's result of use.

The shell of the existing thin-film capacitor anti-unshelling structure is not provided with a heat dissipation structure, and because the environment of using the capacitor has a certain temperature, the phenomenon of demolding frequently occurs after long-term use, the capacitor is easy to damage, and the circuit is directly paralyzed when serious, so that the requirement of people in use is not met, and therefore, the thin-film capacitor shell with good heat dissipation property is provided.

Disclosure of Invention

The utility model aims to provide a thin film capacitor shell with good heat dissipation, which solves the problems that the shell of the traditional thin film capacitor anti-unshelling structure is not provided with a heat dissipation structure, and the capacitor is easy to damage due to the fact that the capacitor is often subjected to demolding phenomenon after long-term use due to a certain temperature of the environment in which the capacitor is used, and the circuit is broken down directly when serious, so that the use requirement of people is not met.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a thin film capacitor shell with good heat dissipation, which comprises a shell and a core pack arranged in the shell, wherein a limiting mechanism is arranged between the surface of the core pack and the inner wall of the shell, and a heat dissipation mechanism is arranged between the bottom of the core pack and the bottom of the shell;

the limiting mechanism comprises a supporting ring fixedly arranged at the bottom of the shell and a clamping part arranged on the inner wall of the shell, and the core is wrapped at the top of the supporting ring;

the clamping part comprises an outer rod fixedly arranged on the inner wall of the shell, an inner rod with one end movably arranged in the outer rod, a telescopic spring arranged between the outer rod and the end part of the inner rod, and a limiting plate with the side surface fixedly connected with the other end of the inner rod, wherein one side surface of the limiting plate far away from the inner rod is attached to the core bag;

the heat dissipation mechanism comprises a fixed ring fixedly arranged at the bottom of the inner side of the shell, a heat dissipation opening arranged on the side surface of the fixed ring, a vent arranged at the center of the bottom of the shell and a dust screen arranged inside the vent, wherein the fixed ring is arranged at the bottom of the supporting ring, a positioning groove is formed in the top of the vent, a positioning block is fixedly connected to the outer side surface of the dust screen, and the positioning block is matched with the positioning groove.

Preferably, the top of the shell is provided with a shell cover, a plurality of through grooves are formed in the shell cover at equal intervals, and a filter screen is fixedly arranged in each through groove.

Preferably, the bottom of the shell cover is fixedly connected with a limiting ring, and the bottom of the limiting ring is propped against the top of the core bag.

Preferably, the limiting plate is provided with a plurality of radiating holes, and the plurality of radiating holes are equidistantly arranged on the limiting plate.

Preferably, the number of the clamping parts is four, and the four clamping parts are distributed in an annular array by taking the center point of the shell as the center of the circle.

Preferably, the top of the limiting plate is provided with an inclined plane, and the inclined direction of the inclined plane gradually inclines downwards from the outer side to the inner side of the shell.

Preferably, the plurality of ventilation openings are arranged at equal intervals.

The utility model has the following beneficial effects:

1. according to the utility model, through the arranged limiting mechanism, the limiting plate is extruded by the elasticity of the arranged telescopic spring and the cooperation of the inner rod, so that the core package is limited and fixed, the core package is convenient to install, the fatigue resistance degree of the core package is increased by the elastic potential energy of the telescopic spring, the deformation degree of the core package at a higher temperature is reduced, and the service life of the film capacitor is prolonged;

2. according to the utility model, through the heat dissipation mechanism, external air enters the inside of the fixed ring through the vent hole at the bottom of the shell, dust in the air is filtered through the dustproof net, the air enters the inside of the fixed ring and then contacts with the bottom of the core pack to dissipate heat, and the air enters the inside of the shell through the heat dissipation hole on the baffle ring, so that heat generated during the operation of the core pack is transferred to the limiting plate, the contact area between the air and the limiting plate is increased through the heat dissipation hole arranged on the limiting plate, thereby improving the heat dissipation effect, avoiding the occurrence of demoulding phenomenon caused by overhigh temperature of the core pack, avoiding the heat damage of the capacitor, and meeting the use requirements of people.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the overall structure of a thin film capacitor shell with good heat dissipation;

FIG. 2 is a top view of a thin film capacitor shell with good heat dissipation;

FIG. 3 isbase:Sub>A cross-sectional view of the thin film capacitor shell of FIG. 2 at A-A with good heat dissipation;

FIG. 4 is an enlarged view of the thin film capacitor shell of FIG. 3 at B with good heat dissipation;

FIG. 5 is an enlarged view of the thin film capacitor shell of FIG. 3 at C with good heat dissipation;

fig. 6 is a perspective view of a thin film capacitor shell with good heat dissipation.

In the drawings, the list of components represented by the various numbers is as follows:

1. a housing; 2. a core pack; 3. a support ring; 4. an outer rod; 5. an inner rod; 6. a telescopic spring; 7. a limiting plate; 8. a fixing ring; 9. a heat radiation port; 10. a vent; 11. a dust screen; 12. a positioning groove; 13. a positioning block; 14. a cover; 15. a filter screen; 16. a limiting ring; 17. and the heat dissipation holes.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-6, the utility model relates to a thin film capacitor shell with good heat dissipation, which comprises a shell 1 and a core pack 2 arranged in the shell 1, wherein a limiting mechanism is arranged between the surface of the core pack 2 and the inner wall of the shell 1, and a heat dissipation mechanism is arranged between the bottom of the core pack 2 and the bottom of the shell 1;

the limiting mechanism comprises a supporting ring 3 fixedly arranged at the bottom of the shell 1 and a clamping part arranged on the inner wall of the shell 1, and the core pack 2 is arranged at the top of the supporting ring 3;

the clamping component comprises an outer rod 4 fixedly arranged on the inner wall of the shell 1, an inner rod 5 with one end movably arranged in the outer rod 4, a telescopic spring 6 arranged between the outer rod 4 and the end part of the inner rod 5, and a limiting plate 7 with the side surface fixedly connected with the other end of the inner rod 5, wherein one side surface of the limiting plate 7 far away from the inner rod 5 is attached to the core bag 2, and the limiting plate 7 is made of a heat conducting material and is used for absorbing heat on the core bag 2;

the cooling mechanism comprises a fixed ring 8 fixedly arranged at the bottom of the inner side of the shell 1, a cooling port 9 arranged on the side surface of the fixed ring 8, a vent 10 arranged at the center of the bottom of the shell 1 and a dust screen 11 arranged in the vent 10, wherein the fixed ring 8 is arranged at the bottom of the support ring 3, a positioning groove 12 is formed in the top of the vent 10, a positioning block 13 is fixedly connected to the outer side surface of the dust screen 11, the positioning block 13 is matched with the positioning groove 12, the dust screen 11 prevents dust in air from entering the shell 1, the dust screen 11 is limited and fixed through the cooperation of the positioning block 13 and the positioning groove 12, the dust screen 11 is convenient to replace and clean, and the inner diameter of the vent 10 is smaller than the inner diameter of the support ring 3.

Wherein, casing 1 top is provided with cap 14, and a plurality of logical grooves have been seted up to the equidistance on the cap 14, and every logical inslot portion all is fixed and is provided with filter screen 15, and inside filter screen 15 avoided the dust entering casing 1.

The bottom of the shell cover 14 is fixedly connected with a limiting ring 16, the bottom of the limiting ring 16 abuts against the top of the core pack 2, and the limiting ring 16 plays a limiting role on the core pack 2.

Wherein, be provided with the louvre 17 on the limiting plate 7, the louvre 17 has a plurality ofly, and a plurality of louvres 17 equidistance set up on the limiting plate 7, increased the area of contact of air and limiting plate 7, the radiating effect is better.

The four clamping components are distributed in an annular array by taking the center point of the shell 1 as the center of a circle, and the core bag 2 is clamped and limited by the four clamping components.

Wherein, limiting plate 7 top is equipped with the inclined plane, and inclined plane incline direction is from casing 1 outside to inside downward sloping gradually, makes its bottom when placing core package 2 and inclined plane contact extrusion limiting plate 7 to casing 1 inner wall one side activity, is convenient for place core package 2.

The number of the ventilation openings 10 is plural, and the ventilation openings 10 are equidistantly arranged.

The working principle of the utility model is as follows: the limiting plate 7 is extruded by the elasticity of the telescopic spring 6, and the inner rod 5 is matched, so that the core pack 2 is limited and fixed, the core pack 2 is convenient to install, the fatigue resistance degree of the core pack 2 is increased by the elastic potential energy of the telescopic spring 6, the deformation degree of the core pack 2 at a higher temperature is reduced, and the service life of the film capacitor is prolonged; outside air gets into inside the solid fixed ring 8 through the vent 10 of casing 1 bottom, dust in the air is filtered through the dust screen 11 that sets up, air gets into inside back and core package 2 bottom contact of solid fixed ring 8, dispel the heat to it, and the air gets into inside casing 1 through the thermovent 9 on the return ring, the heat transfer that core package 2 during operation produced is to limiting plate 7 on, the area of contact of air and limiting plate 7 has been increased through the louvre 17 that sets up on the limiting plate 7, thereby the radiating effect has been improved, avoid core package 2 high temperature to lead to taking place the demoulding phenomenon, avoid the condenser to be heated to damage, satisfy the demand that people used, through the constant head tank 12 that sets up with the locating piece 13 that sets up on dust screen 11, be convenient for dismouting to dust screen 11, be convenient for wash it and change, the life of device has been prolonged.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a film capacitor shell that heat dissipation is good, includes casing (1) and sets up in inside core package (2) of casing (1), its characterized in that: a limiting mechanism is arranged between the surface of the core bag (2) and the inner wall of the shell (1), and a heat dissipation mechanism is arranged between the bottom of the core bag (2) and the bottom of the shell (1);

the limiting mechanism comprises a supporting ring (3) fixedly arranged at the bottom of the shell (1) and a clamping part arranged on the inner wall of the shell (1), and the core bag (2) is arranged at the top of the supporting ring (3);

the clamping component comprises an outer rod (4) fixedly arranged on the inner wall of the shell (1), an inner rod (5) with one end movably arranged in the outer rod (4), a telescopic spring (6) arranged between the outer rod (4) and the end part of the inner rod (5) and a limiting plate (7) with the side surface fixedly connected with the other end of the inner rod (5), wherein one side surface, far away from the inner rod (5), of the limiting plate (7) is attached to the core bag (2);

the utility model discloses a cooling mechanism, including fixed ring (8) that set up in casing (1) inboard bottom, set up cooling hole (9) on fixed ring (8) side, set up vent (10) in casing (1) bottom center and set up in vent (10) inside dust screen (11), support ring (3) bottom is located to fixed ring (8), constant head tank (12) have been seted up at vent (10) top, fixedly connected with locating piece (13) on dust screen (11) lateral surface, locating piece (13) and constant head tank (12) looks adaptation.

2. The thin-film capacitor shell with good heat dissipation performance according to claim 1, wherein a shell cover (14) is arranged at the top of the shell body (1), a plurality of through grooves are formed in the shell cover (14) at equal intervals, and a filter screen (15) is fixedly arranged in each through groove.

3. The thin-film capacitor shell with good heat dissipation performance according to claim 2, wherein a limiting ring (16) is fixedly connected to the bottom of the shell cover (14), and the bottom of the limiting ring (16) is propped against the top of the core pack (2).

4. A thin film capacitor shell with good heat dissipation performance according to claim 3, wherein the limiting plate (7) is provided with a plurality of heat dissipation holes (17), and the plurality of heat dissipation holes (17) are equidistantly arranged on the limiting plate (7).

5. The thin film capacitor shell with good heat dissipation performance according to claim 4, wherein four clamping components are distributed in an annular array by taking the center point of the shell (1) as the center point.

6. The thin film capacitor shell with good heat dissipation performance according to claim 5, wherein an inclined plane is arranged at the top of the limiting plate (7), and the inclined direction of the inclined plane gradually inclines downwards from the outer side to the inner side of the shell (1).

7. A thin film capacitor shell with good heat dissipation performance according to claim 1, wherein a plurality of the ventilation openings (10) are provided, and a plurality of the ventilation openings (10) are equidistantly arranged.

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