Frequency converter with protection effect

Abstract

The utility model discloses a frequency converter with a protection effect, which comprises a frequency converter main body and a protection shell on the periphery of the frequency converter main body, fixing blocks are welded on two sides of the frequency converter main body, the protection shell covers the periphery of the frequency converter main body, and U-shaped buffer seats are adhered on two sides in the protection shell; according to the utility model, the frequency converter main body is arranged in the protective shell, and the fixing blocks at the two sides of the frequency converter main body respectively extend into the U-shaped openings of the U-shaped buffer seats, so that when the protective shell is impacted, the arrangement of the rubber U-shaped buffer seats and the damping springs can absorb the impact transmitted to the interior of the protective shell to the greatest extent; meanwhile, the heat dissipation fans installed at the upper end and the lower end of the protective shell are started to enable the heat dissipation fans to blow air into the corresponding horn covers, the air is filtered by the filter screens at the lower openings of the horn covers and then enters the protective shell, and the purpose of up-down convection type air cooling heat dissipation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a frequency converter with protective effect. Background Art

[0002] The frequency converter is an electric power control device that applies frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. The frequency converter is mainly composed of rectification, filtering, inversion, braking unit, drive unit +, detection unit, microprocessor unit, etc. Common frequency converters generally do not have a protective structure, and it is difficult to protect the surface of the frequency converter. If the surface of the frequency converter is impacted and collided, it is easy to be damaged. In addition, the dustproof performance of common frequency converters is poor, and dust is easy to enter the inside of the frequency converter.

[0003] After searching, publication number CN212115924U discloses a frequency converter with a protective structure, including a protective shell and a frequency converter body, a protective door is hinged on one side of the front of the protective shell, three first dustproof nets are evenly fixed on the surface of the protective door, a heat dissipation mechanism is fixed on the middle part of the top of the protective shell, two support strips are fixed on the inner walls of the four sides of the protective shell, one side of the eight support strips is respectively engaged with one side of eight buffer rubber strips, and the beneficial effects of the utility model are as follows: the utility model is a frequency converter with a protective structure, the fixing plate of the protective shell is fixedly connected with the connecting plate of the frequency converter body by bolts, the protective shell and the protective door can protect the surface of the frequency converter body to prevent the frequency converter body from contacting with other objects, and when the frequency converter body is subjected to collision and impact, the buffer rubber strip can reduce the impact on the frequency converter body, and the frequency converter body is not easily damaged.

[0004] However, since the protective structure in the above scheme mainly uses buffer rubber strips to buffer the impact suffered by the inverter, there is an unsatisfactory buffering effect for more serious impacts. Secondly, the heat dissipation mechanism of the above protective structure is mainly at its top, and cannot achieve the best heat dissipation effect in hot weather.

[0005] To this end, a frequency converter with a protective effect is proposed, which has the advantages of convenient heat dissipation and impact buffering, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a frequency converter with protective effect.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a frequency converter with a protective effect, comprising a frequency converter body and a protective shell around it, fixed blocks are welded on both sides of the frequency converter body, and the outer cover of the frequency converter body is connected to the protective shell, U-shaped buffer seats are bonded on both sides of the inside of the protective shell, and the U-shaped opening reserved on the U-shaped buffer seat is connected to the fixed block, and a vibration-damping spring is embedded and installed at the opening on the surface of the U-shaped buffer seat, a plurality of speaker covers are interspersed at the upper and lower ends of the protective shell, and a heat dissipation frame is welded on the periphery of the plurality of speaker covers, and the small opening of each speaker cover extends to the inner side of the protective shell, a cooling fan is built-in in the heat dissipation frame, and the impeller of the cooling fan faces the large opening of the speaker cover, ventilation nets are welded on the left and right sides of the protective shell, and a protective plate is movably installed at the opening on the front end surface of the protective shell.

[0008] As a further description of the above technical solution: a plurality of connecting blocks are welded to the side of the protective plate facing the protective shell, and a positioning column is welded on each connecting block, the positioning column is composed of two parts, and the top ends of the two parts of the positioning column are integrally formed with a hemispherical portion, positioning blocks are welded on both sides of the protective shell, and an inner cavity is opened inside the positioning block, and a through hole is opened through the inner cavity on the end face of the positioning block, and the hemispherical portion of the positioning column extends through the through hole into the inner cavity of the positioning block.

[0009] As a further description of the above technical solution: a dust screen is welded on the surface of the protective plate, and a handle with a U-shaped structure is welded at the edge of the surface of the protective plate.

[0010] As a further description of the above technical solution: a plurality of the speaker covers are arranged in a rectangular array on the protective shell, and a filter mesh is welded on the inner side of the small opening of each speaker cover.

[0011] As a further description of the above technical solution: two rectangular openings are provided on the surface of the U-shaped buffer seat, and a damping spring is embedded and installed inside each opening.

[0012] As a further description of the above technical solution: the heat dissipation fan is composed of a motor and an impeller fixed to the output end thereof.

[0013] As a further description of the above technical solution: a U-shaped gap is formed between the two parts of the positioning column with the hemispherical part.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, by placing the inverter body in the protective shell, the fixed blocks on both sides of the inverter body are respectively extended to the U-shaped openings of the U-shaped buffer seat. When the protective shell is subjected to impact, the rubber-type U-shaped buffer seat and the damping spring are arranged to absorb the impact transmitted to the inside of the protective shell to the greatest extent, thereby reducing the damage to the inverter body caused by the impact. At the same time, by starting the cooling fans installed at the upper and lower ends of the protective shell, the cooling fans are prompted to blow air into the correspondingly arranged several horn covers, and the air is filtered by the filter net at the opening under the horn cover and then enters the inside of the protective shell, thereby achieving the purpose of upper and lower convection air cooling and heat dissipation. In combination with the several horn covers, the air is guided from the large opening to the small opening, so that the air passing through the horn cover forms a negative pressure, thereby achieving the purpose of air cooling and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the internal structure of a frequency converter with protective effect according to the utility model;

[0017] Figure 2 This is a schematic diagram of the external structure of a frequency converter with protective effect according to the utility model;

[0018] Figure 3 This is a top view of a frequency converter with protective effect according to the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the structure of a protective plate of a frequency converter with protective effect.

[0020] Legend:

[0021] 1. Inverter body; 2. Protective shell; 3. Fixed block; 4. U-shaped buffer seat; 5. Vibration damping spring; 6. Ventilation net; 7. Positioning block; 8. Heat dissipation frame; 9. Cooling fan; 10. Speaker cover; 11. Protective plate; 12. Handle; 13. Connecting block; 14. Through hole; 15. Positioning column; 16. Hemisphere. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] According to an embodiment of the utility model, a frequency converter with a protective effect is provided.

[0024] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-4As shown, according to an embodiment of the utility model, a frequency converter with a protective effect includes a frequency converter body 1 and a protective shell 2 around it, both sides of the frequency converter body 1 are welded with fixing blocks 3, and the outer cover of the frequency converter body 1 is connected to the protective shell 2, both sides of the inside of the protective shell 2 are bonded with U-shaped buffer seats 4, and the U-shaped opening reserved on the U-shaped buffer seat 4 is connected to the fixing block 3, and a vibration-damping spring 5 is embedded and installed at the opening on the surface of the U-shaped buffer seat 4, and a plurality of speaker covers 10 are interspersed at the upper and lower ends of the protective shell 2, and a heat dissipation frame 8 is welded on the periphery of the plurality of speaker covers 10, and the small opening of each speaker cover 10 extends to the inner side of the protective shell 2, and a heat dissipation fan 9 is installed inside the heat dissipation frame 8, and the impeller surface of the heat dissipation fan 9 The large opening of the horn cover 10, the left and right sides of the protective shell 2 are welded with ventilation nets 6, the opening of the front end surface of the protective shell 2 is movably installed with a protective plate 11, and the cooling fan 9 is controlled by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply belong to the common knowledge in the field, and the utility model is mainly used to protect the mechanical device, so the utility model does not explain the control method and wiring arrangement in detail. The principle of the inverter body 1 is an existing known technology, and there are mature products, so no further explanation is made on its principle. The principle of negative pressure cooling of the horn cover 10 is similar to the refrigeration principle of the expansion valve. The setting of the ventilation net 6 is mainly used to guide the hot air in the protective shell 2 out;

[0025] In one embodiment, a plurality of connecting blocks 13 are welded to one side of the protective plate 11 facing the protective shell 2, and a positioning column 15 is welded to each connecting block 13, the positioning column 15 is composed of two parts, and the tops of the two parts of the positioning column 15 are integrally formed with a hemispherical portion 16, and positioning blocks 7 are welded to both sides of the protective shell 2, and an inner cavity is formed inside the positioning block 7, and a through hole 14 is formed through the inner cavity on the end surface of the positioning block 7, and the hemispherical portion 16 of the positioning column 15 extends through the through hole 14 to the inner cavity of the positioning block 7, and the protective plate 11 is close to the protective shell 2. The opening near the protective shell 2 causes the positioning column 15 on the connecting block 13 to be close to the positioning block 7 welded on the side of the protective shell 2. Since the positioning column 15 is composed of two parts with a hemispherical portion 16, and the end surface of the positioning block 7 is provided with a through hole 14 connected to its inner cavity, when the positioning column 15 is inserted into the through hole 14, the two parts of the positioning column 15 are tightened. When the positioning column 15 is completely inserted into the inner cavity of the positioning block 7, the two parts of the positioning column 15 are naturally unfolded, and the hemispherical portion 16 is used to limit the position, so that the protective plate 11 can be quickly disassembled and assembled, and the maintenance of the inverter body 1 is convenient.

[0026] In one embodiment, a dustproof net is welded on the surface of the protective plate 11 , and a U-shaped handle 12 is welded at the edge of the surface of the protective plate 11 . The dustproof net is provided to prevent dust in the air from entering the protective shell 2 .

[0027] In one embodiment, a plurality of speaker covers 10 are arranged in a rectangular array on the protective shell 2, and a filter mesh is welded on the inner side of the small opening of each speaker cover 10, so as to filter dust.

[0028] In one embodiment, two rectangular openings are opened on the surface of the U-shaped buffer seat 4, and a shock-absorbing spring 5 is embedded and installed inside each opening. The shock-absorbing spring 5 has a built-in damper to buffer the impact. The specific known prior art will not be described in detail.

[0029] In one embodiment, the heat dissipation fan 9 is composed of a motor and an impeller fixed to the output end thereof, and the heat dissipation is achieved by dissipating the heat through air cooling.

[0030] In one embodiment, a U-shaped gap is formed between the two parts of the positioning column 15 with the hemispherical portion 16. The gap is set so that the two parts of the positioning column 15 can shrink toward each other when inserted into the through hole 14, and the hemispherical portion 16 can achieve the purpose of limiting when the positioning column 15 is fully inserted into the inner cavity of the positioning block 7.

[0031] Working principle:

[0032] When in use, firstly, power is supplied to the cooling fan 9 in the heat dissipation frame 8. When the inverter body 1 is installed, the inverter body 1 is placed in the protective shell 2, so that the fixing blocks 3 on both sides of the inverter body 1 are extended to the U-shaped openings of the U-shaped buffer seat 4 respectively. Then, the protective plate 11 is moved close to the opening of the protective shell 2, so that the positioning column 15 on the connecting block 13 is moved close to the positioning block 7 welded on the side of the protective shell 2. Since the positioning column 15 is composed of two parts with a hemispherical portion 16, and the end face of the positioning block 7 is provided with a through hole 14 connected to its inner cavity, when the positioning column 15 is inserted into the through hole 14, the two parts of the positioning column 15 are tightened. When the positioning column 15 is completely inserted into the inner cavity of the positioning block 7, the two parts of the positioning column 15 are naturally unfolded and the hemispherical portion 16 reaches the limit position. The purpose is to facilitate the quick disassembly and assembly of the protective plate 11 and the maintenance of the inverter body 1. When the protective shell 2 is impacted, the setting of the rubber U-shaped buffer seat 4 and the vibration-damping spring 5 can absorb the impact transmitted to the inside of the protective shell 2 to the greatest extent, and reduce the damage to the inverter body 1 caused by the impact. At the same time, by starting the cooling fan 9 installed at the upper and lower ends of the protective shell 2, the cooling fan 9 is prompted to blow air into the corresponding several horn covers 10, and the air is filtered by the filter net at the lower opening of the horn cover 10 and enters the inside of the protective shell 2, so as to achieve the purpose of upper and lower convection air cooling and heat dissipation. Combined with several horn covers 10, the air is guided from the large opening to the small opening, so that the air passing through the horn cover 10 forms a negative pressure, so as to achieve the purpose of air cooling and heat dissipation.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A frequency converter with protective effect, comprising a frequency converter body (1) and a protective shell (2) surrounding the frequency converter, characterized in that: Fixed blocks (3) are welded on both sides of the inverter body (1), and the outer cover of the inverter body (1) is connected to a protective shell (2). U-shaped buffer seats (4) are bonded on both sides of the inside of the protective shell (2), and the U-shaped opening reserved on the U-shaped buffer seat (4) is connected to the fixed block (3). A vibration damping spring (5) is embedded and installed at the opening on the surface of the U-shaped buffer seat (4). A plurality of speaker covers (10) are inserted at the upper and lower ends of the protective shell (2), and a heat dissipation frame (8) is welded on the periphery of the plurality of speaker covers (10), and the small opening of each speaker cover (10) extends to the inner side of the protective shell (2). A heat dissipation fan (9) is installed inside the heat dissipation frame (8), and the impeller of the heat dissipation fan (9) faces the large opening of the speaker cover (10). Ventilation nets (6) are welded on the left and right sides of the protective shell (2), and a protective plate (11) is movably installed at the opening on the front end surface of the protective shell (2).

2. The frequency converter with protection effect according to claim 1, characterized in that: A plurality of connecting blocks (13) are welded to a side of the protective plate (11) facing the protective shell (2), and a positioning column (15) is welded to each connecting block (13), the positioning column (15) is composed of two parts, and the top ends of the two parts of the positioning column (15) are integrally formed with a hemispherical portion (16), positioning blocks (7) are welded to both sides of the protective shell (2), and an inner cavity is provided inside the positioning block (7), and a through hole (14) is provided on the end face of the positioning block (7) through the inner cavity, and the hemispherical portion (16) of the positioning column (15) passes through the through hole (14) and extends into the inner cavity of the positioning block (7).

3. The frequency converter with protective effect according to claim 1, characterized in that: A dust screen is welded to the surface of the protective plate (11), and a handle (12) with a U-shaped structure is welded at the edge of the surface of the protective plate (11).

4. The frequency converter with protection effect according to claim 1, characterized in that: A plurality of the speaker covers (10) are arranged in a rectangular array on the protective shell (2), and a filter screen is welded on the inner side of the small opening of each speaker cover (10).

5. The frequency converter with protective effect according to claim 1, characterized in that: The surface of the U-shaped buffer seat (4) is provided with two rectangular openings, and a damping spring (5) is embedded and installed inside each opening.

6. The frequency converter with protection effect according to claim 1, characterized in that: The heat dissipation fan (9) is composed of a motor and an impeller fixedly connected to the output end thereof.

7. The frequency converter with protection effect according to claim 2, characterized in that: A U-shaped gap is formed between the two parts of the positioning column (15) with the hemispherical part (16).

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