A kind of frequency variator of regulating fan delivery
Technical field
The utility model relates to a kind of frequency variator, especially a kind of frequency variator of regulating fan delivery.
Background technique
Variable-frequency control technique is a kind of novel electric power drive speed-adjusting technology of rising the 80's Mos of 20th century, the technology such as current collection power electronics, control automatically, microelectronic, Electrical Motor are in the new and high technology of one, speed adjusting performance, the significant power savings excellent with it have applicability widely at all fields of national economy, being known as both at home and abroad is the highest, the optimal Electrified Transmission scheme of most widely used, effect in the world, is the developing direction of Electrified Transmission.Frequency control of motor speed is to reach the motor speed-regulating purpose by changing power supply frequency and supply voltage, and frequency control of motor speed provides important new tool for improving Business Economic Benefit.
Due to frequency variator must be at a certain temperature could be reliably and with long-term stable operation, therefore must carry out effectively heat radiation and cooling to frequency variator.The cooling air quantity of frequency variator cooling blower can not be controlled at present, even exothermic temperature is not high, cooling blower, also with maximum quantity of wind output, has reduced the efficiency of device like this, has increased the overall noise of equipment, and has reduced the working life of cooling blower.
Summary of the invention
Main purpose of the present utility model is to provide a kind of frequency variator of regulating fan delivery, it controls air quantity and the start and stop of blower fan according to the difference between the temperature of frequency variator ambient temperature and radiator, improve the efficiency of equipment, reduced noise, improved the working life of blower fan.
In order to achieve the above object, the utility model adopts following technological scheme: a kind of frequency variator of regulating fan delivery comprises transducer body, radiator and blower fan; Also comprise environment temperature sensor, be located at the temperature transducer on radiator, the controller of fan be connected with blower fan; Be provided with control circuit, inverter, rectifier, chopper in described transducer body; By chip CPU, as control circuit, described environment temperature sensor, radiator temperature sensor and the controller of fan that is drawn out to the transducer body outside is connected with control circuit respectively; Described inverter connects load end and is connected to the outlet power circuit breaker, and the front end of described rectifier is connected to the incoming power circuit breaker.
Preferably, control circuit is by connecting two pulse amplifiers control inverters respectively, at the load end of each inverter, is connected to the outlet power circuit breaker, chopper two inverters that are connected in parallel.
Preferably, described radiator is arranged on the rear portion of described transducer body; Described assembling is on the top of described transducer body, and the exhaust outlet of described blower fan upward.
The beneficial effects of the utility model are: the utility model passes through to detect radiator environment temperature and frequency variator ambient temperature, and regulates fan delivery and control start and stop according to temperature gap between the two; The utility model, under the prerequisite of guaranteeing the power device reliable operation, can effectively improve radiating effect and the noise decrease of radiation system, can improve again the efficiency of frequency variator under each power and the working life of blower fan.
In addition, the utility model assembling on the top of frequency variator and the exhaust outlet of blower fan upward, like this, the hot gas that blower fan can produce frequency variator when heat radiation up be extracted out, extraneous dust is difficult for entering air channel, thereby has alleviated the cleaning work to the air channel of radiator.
The accompanying drawing explanation
Fig. 1 is the utility model embodiment modular structure schematic diagram.
In Fig. 1, mark is described as follows: 1-transducer body, 2-radiator, 3-blower fan, 4-control circuit, 5-inverter, 6-rectifier, 7-chopper, 8-outlet power circuit breaker, 9-incoming power circuit breaker.
Embodiment
The realization of the utility model purpose, functional characteristics and beneficial effect, be described further below in conjunction with specific embodiment and accompanying drawing.
Below in conjunction with the drawings and specific embodiments, technological scheme described in the utility model is described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
With reference to figure 1, the utility model embodiment can regulate the frequency variator of fan delivery, comprise transducer body 1, radiator 2 and blower fan 3, also comprise being drawn out to the outer environment temperature sensor of transducer body 1, being located at the temperature transducer on radiator 2, the controller of fan be connected with blower fan 3; Described radiator 2 is arranged on the rear portion of described transducer body 1; Described blower fan 3 is arranged on the top of described transducer body 1, and the exhaust outlet of described blower fan 3 upward; Be provided with control circuit 4, inverter 5, rectifier 6, chopper 7 in described transducer body 1; Described inverter 5 connects load end and is connected to outlet power circuit breaker 8; The front end of described rectifier 6 is connected to incoming power circuit breaker 9;
By chip CPU, as control circuit 4, described environment temperature sensor, radiator temperature sensor and controller of fan are connected with control circuit 4 respectively.Blower fan 3, control circuit 4, controller of fan, environment temperature sensor and radiator temperature sensor form start and stop and the speed governing that an automatic control system is controlled blower fan.The utility model embodiment passes through to detect radiator environment temperature and frequency variator ambient temperature, and regulates fan delivery and control start and stop according to temperature gap between the two.Under the prerequisite of guaranteeing the power device reliable operation, the utility model embodiment can effectively improve radiating effect and the noise decrease of radiation system like this, can improve again the efficiency of frequency variator under each power and the working life of blower fan 3.
In the structure of the utility model embodiment's frequency variator, the exhaust outlet that blower fan 3 is arranged on the top of frequency variator and blower fan 3 upward, like this, the hot gas that blower fan 3 can produce frequency variator when heat radiation is up extracted out, extraneous dust is difficult for entering air channel, thereby has alleviated the cleaning work to the air channel of radiator.