CN202334259U - Low-voltage frequency converter with heat radiation function - Google Patents
Low-voltage frequency converter with heat radiation function Download PDFInfo
- Publication number
- CN202334259U CN202334259U CN2011204517841U CN201120451784U CN202334259U CN 202334259 U CN202334259 U CN 202334259U CN 2011204517841 U CN2011204517841 U CN 2011204517841U CN 201120451784 U CN201120451784 U CN 201120451784U CN 202334259 U CN202334259 U CN 202334259U
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- Prior art keywords
- frequency converter
- fan
- mcu
- temperature
- voltage frequency
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- Expired - Fee Related
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- Control Of Positive-Displacement Air Blowers (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model relates to a low-voltage frequency converter with a heat radiation function. The low-voltage frequency converter comprises a frequency converter cabinet body. A fan motor and a fan control device are arranged in the frequency converter cabinet body. The fan control device comprises an MCU (Micro-programmed Control Unit) for controlling the rotating speed of a fan. A temperature sensor mounted in the frequency converter cabinet body is arranged on an input port of the MCU in a sampling connection manner; and an output port for outputting a PWM (Pulse-Width Modulation) signal of the MCU is connected with a control circuit of the fan motor through control connection of a driver. The fan control device provided by the utility model adopts an automatic control manner, and the MCU collects temperature information sampled by the temperature sensor, so that an actual temperature condition in the cabinet is obtained. If the actual temperature is higher than a set temperature, the fan motor is controlled to be started. According to a different value between the actual temperature and the set temperature, a duty ratio of the PWM signal is adjusted and output, so that an average power supply voltage of the fan motor is adjusted, and the aim of adjusting speed is achieved.
Description
Technical field
The utility model relates to a kind of low voltage frequency converter.
Background technology
Low voltage frequency converter is in running, and great amount of heat can appear in the power cell in its cabinet, influences the stable operation of system.Usually for cooling, can in cabinet, increase fan usually, fan generally directly is connected on the power supply, and start is operation automatically; Perhaps by control switch manually.First kind of situation is because a kind of running status that is in of fan can increase energy consumption, and second kind of situation is because the limitation of manual type can not guarantee radiating effect.
The utility model content
The purpose of the utility model provides a kind of low voltage frequency converter with heat sinking function, and existing low voltage frequency converter radiating control mode automaticity is low in order to solve, the problem of weak effect.
For realizing above-mentioned purpose; The scheme of the utility model is: a kind of low voltage frequency converter with heat sinking function; Comprise the frequency converter cabinet, fan electromotor and fan control device are set in the frequency converter cabinet, said fan control device comprises the MCU that is used to control rotation speed of the fan; The input port up-sampling of MCU is connected with establishes the temperature sensor that is installed in the frequency converter cabinet, and the output port that is used for output pwm signal of MCU connects the control circuit of said fan electromotor through driver control.
Said MCU goes up input and is connected with the keyboard that is used for design temperature, and the display module that is used for displays temperature.Said display module is a LCD MODULE.Said fan electromotor is a direct current machine, and its control circuit is the PWM DC chopper circuit.
The described fan control device of the utility model adopts auto-control mode, and MCU collects the temperature information that temperature sensor is sampled, and knows the actual temperature situation in the cabinet, if higher than design temperature, then controls the fan electromotor starting.According to the difference of actual temperature and design temperature, regulate the duty ratio of output pwm signal, thereby regulate the average supply power voltage of fan electromotor, reach the purpose of speed governing.Design temperature can solidify at MCU, also can be through the keyboard input, and convenient modification to design temperature.In addition, can also show current temperature value through display module.
Description of drawings
Fig. 1 is the structure principle chart of the utility model;
Fig. 2 is the control circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
A kind of low voltage frequency converter as shown in Figure 1 with heat sinking function; Fan electromotor M and fan control device are set in the frequency converter cabinet, and fan control device comprises the MCU that is used to control rotation speed of the fan, and the input port up-sampling of MCU is connected with establishes the temperature sensor that is installed in the frequency converter cabinet; MCU sample temperature information; Compare with design temperature, export corresponding pwm signal, through being used for the output port output of output pwm signal according to comparative result; Through driver, connect the control circuit of fan electromotor.Wherein, calculate the employing pid algorithm for temperature to the processing of rotating speed.
Provided the execution mode of a control circuit like Fig. 2, promptly a kind of DC chopper circuit, through the triggering signal of control thyristor, the voltage of adjustment fan electromotor M is to realize fan speed-regulating.As other execution modes, the control circuit of fan electromotor also can adopt DC speed regulation control circuits such as bridge circuit.
For can the online modification design temperature, input connects keyboard on MCU; To watch in order showing, can on MCU, to export the connection display module.Display module adopts LCD MODULE.
Claims (4)
1. low voltage frequency converter with heat sinking function; Comprise the frequency converter cabinet; Fan electromotor and fan control device are set in the frequency converter cabinet, it is characterized in that, said fan control device comprises the MCU that is used to control rotation speed of the fan; The input port up-sampling of MCU is connected with establishes the temperature sensor that is installed in the frequency converter cabinet, and the output port that is used for output pwm signal of MCU connects the control circuit of said fan electromotor through driver control.
2. a kind of low voltage frequency converter with heat sinking function according to claim 1 is characterized in that, said MCU goes up input and is connected with the keyboard that is used for design temperature, and the display module that is used for displays temperature.
3. a kind of low voltage frequency converter with heat sinking function according to claim 2 is characterized in that said display module is a LCD MODULE.
4. a kind of low voltage frequency converter with heat sinking function according to claim 1 is characterized in that said fan electromotor is a direct current machine, and its control circuit is the PWM DC chopper circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204517841U CN202334259U (en) | 2011-11-15 | 2011-11-15 | Low-voltage frequency converter with heat radiation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204517841U CN202334259U (en) | 2011-11-15 | 2011-11-15 | Low-voltage frequency converter with heat radiation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334259U true CN202334259U (en) | 2012-07-11 |
Family
ID=46446224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204517841U Expired - Fee Related CN202334259U (en) | 2011-11-15 | 2011-11-15 | Low-voltage frequency converter with heat radiation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334259U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916649A (en) * | 2012-11-13 | 2013-02-06 | 大连东方电器制造有限公司 | Frequency conversion control cabinet |
| CN103280985A (en) * | 2013-06-09 | 2013-09-04 | 浙江海振电子科技有限公司 | Frequency converter capable of adjusting fan delivery |
| CN104061180A (en) * | 2014-06-18 | 2014-09-24 | 台安科技(无锡)有限公司 | Fan PWM (Pulse Width Modulation) speed regulation energy-saving control system and control method with temperature prediction |
| CN105978437A (en) * | 2016-06-14 | 2016-09-28 | 汤海涛 | High-performance vector frequency converter |
| CN108430191A (en) * | 2017-02-13 | 2018-08-21 | 思源电气股份有限公司 | A kind of intelligent control fan radiating system and method for charging pile |
-
2011
- 2011-11-15 CN CN2011204517841U patent/CN202334259U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916649A (en) * | 2012-11-13 | 2013-02-06 | 大连东方电器制造有限公司 | Frequency conversion control cabinet |
| CN103280985A (en) * | 2013-06-09 | 2013-09-04 | 浙江海振电子科技有限公司 | Frequency converter capable of adjusting fan delivery |
| CN104061180A (en) * | 2014-06-18 | 2014-09-24 | 台安科技(无锡)有限公司 | Fan PWM (Pulse Width Modulation) speed regulation energy-saving control system and control method with temperature prediction |
| CN105978437A (en) * | 2016-06-14 | 2016-09-28 | 汤海涛 | High-performance vector frequency converter |
| CN108430191A (en) * | 2017-02-13 | 2018-08-21 | 思源电气股份有限公司 | A kind of intelligent control fan radiating system and method for charging pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20151115 |
|
| EXPY | Termination of patent right or utility model |