CN215646587U

CN215646587U - High-protection frequency converter with closed driving circuit

Info

Publication number: CN215646587U
Application number: CN202122077486.7U
Authority: CN
Inventors: 张玉北; 庞威; 王俊飞; 陈礼根; 张泽
Original assignee: Shandong Chinsc Electric Technology Co ltd
Current assignee: Shandong Chinsc Electric Technology Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-25
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a high-protection frequency converter with a closed driving circuit, which belongs to the field of frequency converter structures and comprises a panel shell and a case, wherein a waterproof keyboard is embedded in the surface of the panel shell, the panel shell is fixed on one side of the case in a matched mode through a locking screw, an IGBT module is assembled in the case through a bolt matched mounting frame, the surface of the IGBT module is electrically connected with a rectifier bridge, an electrolytic capacitor is assembled in the case and is electrically connected with the IGBT module through a circuit matched direct current contactor, the IGBT module is electrically connected with the rectifier bridge and a charging resistor in sequence, the IGBT module is electrically connected with the waterproof keyboard through circuit matched, and a heat dissipation mechanism is assembled in the case. According to the utility model, the internal arrangement structure of the frequency converter is optimized, so that the stability of the ventilation and heat dissipation and integrated structure is ensured, the hardware operates independently, and the product stability is improved.

Description

High-protection frequency converter with closed driving circuit

Technical Field

The utility model relates to the field of frequency converter structures, in particular to a high-protection frequency converter with a closed driving circuit.

Background

The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detecting unit micro-processing unit and the like, the existing common frequency converter protection structure is a closed shell to provide sufficient protection, but closed heat dissipation is always a difficult problem of closed protection, a common heat dissipation mechanism is difficult to adapt to the closed structure, the protection effect can be influenced in order to improve the heat dissipation efficiency, and the whole adaptability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-protection frequency converter with a closed driving circuit, which ensures the stability of ventilation and heat dissipation and an integrated structure by optimizing the internal arrangement structure of the frequency converter, and improves the stability of products by independent operation among hardware.

The utility model provides the following technical scheme: the utility model provides an inclosed high protection converter of drive circuit, includes panel shell and quick-witted case, the surface embedded type of panel shell installs waterproof keyboard, the panel shell passes through the locking screw cooperation to be fixed in one side of quick-witted case, machine incasement portion is equipped with the IGBT module through bolt cooperation mounting bracket, one side of IGBT module is equipped with charging resistor, the opposite side of IGBT module is equipped with DC contactor, the surperficial electric connection of IGBT module has the rectifier bridge, machine incasement portion is equipped with electrolytic capacitor, electrolytic capacitor passes through circuit cooperation DC contactor and IGBT module electric connection, the IGBT module in proper order with rectifier bridge, charging resistor electric connection, the IGBT module passes through circuit cooperation and waterproof keyboard electric connection, the inside of machine case is equipped with heat dissipation mechanism.

Preferably, sealing rubber strips are sequentially and uniformly laid and bonded on the surface of the panel shell, and the case is of an integrated structure made of stainless steel materials.

Preferably, a nylon cable waterproof connector is embedded in the surface of one side of the case.

Preferably, the heat dissipation mechanism comprises an air inlet, an IP grade fan and a tooth piece radiator, the tooth piece radiator is installed on the bottom surface of the IGBT module, the case is provided with the IP grade fan on one side of the tooth piece radiator through the mounting frame in a matching mode, the air inlet is formed in the surface of the other side of the tooth piece radiator, and the IP grade fan is electrically connected with the IGBT module through the circuit in a matching mode.

Preferably, a waterproof membrane is laid on the surface of the waterproof keyboard, and a capacitor rubber ring is sleeved and sealed at one end of the electrolytic capacitor.

The utility model has the technical effects and advantages that:

1. the case body of the case adopts an integrated welding and bending technology, and a stainless steel plate is used as a material; the components are assembled into an independent CPU control panel by matching with the mounting frame, the software integration level is high, the drive plate and the module gate plate are designed in a split mode, hardware operates independently, and the product stability is improved;

2. the operation keyboard adopts a waterproof and dustproof design and is pasted with a waterproof film, so that double-layer protection is safer and more reliable; the capacitor adopts a capacitor rubber ring to isolate the air channel, effectively seals the circuit driving layer, and has good dust prevention, water prevention and tightness;

3. the fan is assembled at two ends of the bottom of the case respectively, the air inlet is formed, the high-density tooth sheet radiator at the middle part is matched to form an independent air channel, the forced air cooling of the IP grade fan is matched, the heat inside the case can be efficiently taken out, the driving circuit layer and the heat dissipation air channel are perfectly isolated through the sealing isolation design, the stable operation of the driving circuit layer is protected, meanwhile, the heat dissipation standard required by the machine is achieved, the stability of the machine is improved, and the service life of the machine is prolonged.

Drawings

Fig. 1 is a schematic structural view of an IGBT module mounting part of the utility model;

fig. 2 is a schematic structural diagram of the present invention.

Description of reference numerals: 1. a panel shell; 2. a chassis; 3. a waterproof nylon cable joint; 4. an air inlet; 5. a waterproof keyboard; 6. a charging resistor; 7. a rectifier bridge; 8. an IGBT module; 9. a capacitive rubber ring; 10. an electrolytic capacitor; 11. a fin radiator; 12. a DC contactor; 13. an IP grade fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a high-protection frequency converter with a closed driving circuit, which is shown in the figure 1-2 and comprises a panel shell 1 and a case 2, wherein a waterproof keyboard 5 is embedded in the surface of the panel shell 1, the panel shell 1 is fixed on one side of the case 2 through a locking screw in a matching way, sealing rubber strips are sequentially and uniformly laid and bonded on the surface of the panel shell 1, the case 2 is an integrated structure made of stainless steel materials, the sealing rubber strips are utilized to ensure the protection effect of the panel shell 1 and achieve the auxiliary waterproof and dustproof effect, the overall compression resistance and impact resistance of the stainless steel case 2 are ensured, the adverse effect of the external environment can be reduced as much as possible, and a nylon cable waterproof connector 3 is embedded in the surface of one side of the case 2 to serve as a line supporting structure and be convenient for matching with other equipment to carry out subsequent installation work.

Machine case 2 is inside to be equipped with IGBT module 8 through bolt cooperation mounting bracket, one side of IGBT module 8 is equipped with charging resistor 6, IGBT module 8's opposite side is equipped with direct current contactor 12, IGBT module 8's surperficial electric connection has rectifier bridge 7, machine case 2 is inside to be equipped with electrolytic capacitor 10, electrolytic capacitor 10 is through circuit cooperation direct current contactor 12 and IGBT module 8 electric connection, IGBT module 8 in proper order with rectifier bridge 7, charging resistor 6 electric connection, IGBT module 8 is through circuit cooperation and 5 electric connection of waterproof keyboard, machine case 2's inside is equipped with heat dissipation mechanism.

Waterproof membrane has been laid on waterproof keyboard 5's surface, and the one end of electrolytic capacitor 10 is cup jointed and is sealed has electric capacity rubber ring 9, can further play inside protective effect, fully improves electrolytic capacitor 10's installation protective effect.

Heat dissipation mechanism includes air intake 4, IP level fan 13 and tooth piece radiator 11, tooth piece radiator 11 installs the bottom surface at IGBT module 8, machine case 2 is equipped with IP level fan 13 in tooth piece radiator 11 one side through the mounting bracket cooperation, machine case 2 has seted up air intake 4 on the surface of tooth piece radiator 11 opposite side, IP level fan 13 passes through circuit cooperation and IGBT module 8 electric connection, it provides abundant radiating effect to utilize IP level fan 13 to cooperate inside tooth piece radiator 11, the fan position is relative with air intake 4 structure, can cooperate the high density tooth piece radiator 11 of middle zone to form good heat dissipation wind channel, make can receive stable abundant heat dissipation in the converter course of operation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a inclosed high protection converter of drive circuit, includes panel shell (1) and quick-witted case (2), its characterized in that: the surface of the panel shell (1) is embedded with a waterproof keyboard (5), the panel shell (1) is fixed on one side of the case (2) through locking screw cooperation, the case (2) is internally provided with an IGBT module (8) through a bolt cooperation mounting rack, one side of the IGBT module (8) is provided with a charging resistor (6), the other side of the IGBT module (8) is provided with a direct current contactor (12), the surface of the IGBT module (8) is electrically connected with a rectifier bridge (7), the case (2) is internally provided with an electrolytic capacitor (10), the electrolytic capacitor (10) is electrically connected with the IGBT module (8) through a circuit cooperation direct current contactor (12), the IGBT module (8) is electrically connected with the rectifier bridge (7) and the charging resistor (6) in sequence, the IGBT module (8) is electrically connected with the waterproof keyboard (5) through circuit cooperation, the inside of the case (2) is provided with a heat dissipation mechanism.

2. The high-protection frequency converter with the sealed driving circuit according to claim 1, wherein: sealing rubber strips are sequentially and uniformly laid on the surface of the panel shell (1) and are bonded with the surface of the panel shell, and the case (2) is of an integrated structure made of stainless steel materials.

3. The high-protection frequency converter with the sealed driving circuit according to claim 1, wherein: and a nylon cable waterproof connector (3) is embedded in the surface of one side of the case (2).

4. The high-protection frequency converter with the sealed driving circuit according to claim 1, wherein: heat dissipation mechanism includes air intake (4), IP grade fan (13) and tooth piece radiator (11), the bottom surface at IGBT module (8) is installed in tooth piece radiator (11), machine case (2) are equipped with IP grade fan (13) through the mounting bracket cooperation in tooth piece radiator (11) one side, air intake (4) have been seted up on machine case (2) on the surface of tooth piece radiator (11) opposite side, IP grade fan (13) are through circuit cooperation and IGBT module (8) electric connection.

5. The high-protection frequency converter with the sealed driving circuit according to claim 1, wherein: and a waterproof membrane is laid on the surface of the waterproof keyboard (5), and one end of the electrolytic capacitor (10) is sleeved and sealed with a capacitor rubber ring (9).