Frequency converter
Technical field
The utility model relates to a kind of frequency converter, specifically a kind of frequency converter of perfect heat-dissipating.
Background technology
Frequency converter is one of modern electrical machine speed regulating control and energy-conservation indispensable important devices, very extensive in the application of industrial circle.Main circuit of converter is made up of rectification circuit, intermediate circuit, inverter circuit three parts; power device caloric value in these circuit is larger in the course of the work; if can not be to its efficiently radiates heat, will make frequency converter shut down or damage because of excess Temperature, can not normally move.
Heat radiation of the prior art interval is all wholely set and forms, and electric heating element and IGBT transistor, electric capacity are all arranged in same base, causes heat can be full of whole cavity, heat extraction poor effect in cavity.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of frequency converter of simple in structure, good heat dissipation.
For achieving the above object, the utility model provides following technical scheme: a kind of frequency converter, comprise transducer body, radiator, and radiator fan, described transducer body inside is a cavity, on described cavity opposite ends inwall, be provided with ventilating opening, described radiator fan is installed in cavity and is placed in ventilating opening one side, described transducer body comprises IGBT transistor, electric capacity, described frequency converter cavity is provided with the cover plate of a closed cavity upper end, described cover plate is provided with the utensil receiving opening that holds IGBT transistor and electric capacity, described IGBT transistor one side is connected with radiator upper surface, in described cavity, be also provided with one division board, described division board is separated into the first cavity for holding electric capacity by cavity and for holding the second cavity of IGBT transistor and radiator.
By adopting technique scheme, cavity is divided into two cavitys by division board in described cavity, the heat of the first cavity electric capacity can be discharged by the ventilating opening on both sides, heat in the second cavity is directly discharged the heat of the second cavity by fan heat extraction from ventilating opening, change speed air flow in cavity, play the object that increases radiating effect, improved original heat and be full of whole cavity heat extraction, cause the inhomogeneous situation of heat radiation.
The utility model is further set to: described radiator comprises heat-conducting plate and some fin that is arranged at heat-conducting plate one side.
The utility model is further set to: described fin extends to transducer body cavity bottom, and described fin interval arranges, and makes to form gap between adjacent two fin.
By adopting technique scheme, between fin, interval arranges, and forms gap, makes radiating rate faster.
The utility model is further set to: described heat-conducting plate and fin are made by aluminum alloy materials; Make radiator heat-dissipation better, faster.
Brief description of the drawings
Fig. 1 is a kind of frequency converter decomposing schematic representation of the utility model;
Fig. 2 is a kind of frequency converter floor map of the utility model;
Fig. 3 is a kind of frequency converter left view of the utility model;
Fig. 4 is a kind of frequency changer schematic diagram of the utility model.
Reference numeral: 1, transducer body; 11, ventilating opening; 12, IGBT transistor; 13, electric capacity; 14, the first cavity; 15, the second cavity; 2, radiator; 21, heat-conducting plate; 22, fin; 3, radiator fan; 4, cover plate; 41, utensil receiving opening; 5, division board.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
A kind of frequency converter as shown in Figure 4 and 1, comprise transducer body 1, radiator 2, and radiator fan, described transducer body 1 inside is a cavity, on described cavity opposite ends inwall, be provided with ventilating opening 11, described radiator fan is installed in cavity and is placed in ventilating opening 11 1 sides, described transducer body 1 comprises IGBT transistor 12, electric capacity 13, described frequency converter cavity is provided with the cover plate 4 of a closed cavity upper end, described cover plate 4 is provided with the utensil receiving opening 41 that holds IGBT transistor 12 and electric capacity 13, described IGBT transistor 12 1 sides are connected with radiator 2 upper surfaces, in described cavity, be also provided with division board 5 one, described division board 5 is separated into the first cavity 14 for holding electric capacity 13 by cavity and for holding the second cavity 15 of IGBT transistor 12 and radiator 2.
By adopting technique scheme, cavity is divided into two cavitys by division board 5 in described cavity, the heat of the first cavity electric capacity 13 can be discharged by the ventilating opening on both sides 11, heat in the second cavity 15 is directly discharged the heat of the second cavity 15 by fan heat extraction from ventilating opening 11, change speed air flow in cavity, play the object that increases radiating effect, improved original heat and be full of whole cavity heat extraction, cause the inhomogeneous situation of heat radiation.
Described radiator 2 comprises heat-conducting plate 21 and some fin 22 that is arranged at heat-conducting plate 21 1 sides, and described fin 22 extends to frequency converter cavity bottom, and described fin 22 intervals arrange, and make to form gap between adjacent two fin 22, make radiating rate faster.
Described heat-conducting plate 21 is made by aluminum alloy materials with fin 22, make radiator 2 dispel the heat better, faster.
In the present embodiment; the foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle; any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.