CN221236933U - Energy-saving speed-regulating frequency converter radiator fan - Google Patents
Energy-saving speed-regulating frequency converter radiator fan Download PDFInfo
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- CN221236933U CN221236933U CN202323135468.5U CN202323135468U CN221236933U CN 221236933 U CN221236933 U CN 221236933U CN 202323135468 U CN202323135468 U CN 202323135468U CN 221236933 U CN221236933 U CN 221236933U
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- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 23
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000003381 stabilizer Substances 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses an energy-saving speed-regulating frequency converter cooling fan, which comprises a CPU, a fan driving circuit and a temperature detection circuit, wherein the fan driving circuit and the temperature detection circuit are electrically connected with the CPU, the temperature detection circuit detects the real-time temperature of a frequency converter, the CPU collects the temperature signal of the temperature detection circuit, thereby realizing the real-time temperature monitoring of the frequency converter, meeting the real-time control of the cooling fan, the CPU outputs PWM signals, the PWM signals control the working voltage of the cooling fan driven by the fan driving circuit to regulate the rotating speed of the fan, meeting the energy-saving speed-regulating effect, and the fan driving circuit is added with a switch and a voltage stabilizing circuit mainly comprising a three-terminal voltage stabilizer, so that the cooling fan can be protected by the working voltage, and the service life of the cooling fan is prolonged.
Description
Technical Field
The utility model relates to the field of fans, in particular to an energy-saving speed-regulating frequency converter cooling fan.
Background
In recent years, frequency converters are becoming more and more popular in the industry, and not only can the frequency converter control the rotation speed of the dragged equipment, but also can realize various control modes, so that the process is easier to control, and the frequency converter is energy-saving, and the energy loss is cost loss, which is recognized by more and more people. At present, more and more frequency converters are used in energy-saving reconstruction engineering in a large range all over the country, and the energy-saving effect is very obvious. The frequency converter itself, however, heats up, mainly due to internal losses. The loss of each part in the frequency converter is mainly composed of a main circuit, and the loss is about 98% and the loss of the control circuit is about 2%. In order to ensure the normal and reliable operation of the frequency converter, the frequency converter must be cooled. Usually, a fan is adopted for heat dissipation, and the built-in fan of the frequency converter can take away the heat dissipation in the box body. In order to ensure that the frequency converter normally operates below the allowable temperature, the cooling fan continuously works. The service life of the cooling fan is limited by the bearing, which is about 30000-60000 h. When the frequency converter is continuously running, the fan or bearings need to be replaced once after a few years.
At present, a common cooling fan of the frequency converter adopts a voltage level of 24V, continuously operates at a constant rotating speed after being electrified, cannot adjust the speed, and virtually causes energy waste and noise pollution.
In summary, the energy-saving and speed-adjusting frequency converter cooling fan is designed.
Disclosure of utility model
The utility model aims to overcome the defects and provides an energy-saving speed-regulating frequency converter cooling fan.
The utility model realizes the above purpose through the following technical scheme:
The utility model provides an energy-conserving speed governing's converter radiator fan, includes CPU, fan drive circuit and temperature detection circuit, and fan drive circuit and temperature detection circuit all are connected with the CPU electricity, and the output voltage of fan drive circuit is controlled to the PWM signal of CPU input.
The fan driving circuit comprises a switch, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, a triode, an optocoupler and a three-terminal voltage stabilizing tube, wherein the first end of the optocoupler is externally connected with a 5V direct-current voltage power supply, the second resistor is connected between the first end and the second end of the optocoupler in parallel, the second end of the optocoupler is connected with a signal input end of a CPU (Central processing unit) through the first resistor, the third end of the optocoupler is grounded, the fourth end of the optocoupler is externally connected with a 24V direct-current voltage power supply through a serial circuit formed by the third resistor and the fourth resistor, the triode is a PNP triode, the emitter of the triode is externally connected with a 24V direct-current voltage power supply, the base electrode of the triode is respectively connected with the fourth resistor and the third resistor, the collector of the triode is connected with the cathode of the third diode, the input end of the triode is grounded with the input end of the three-terminal voltage stabilizing tube, the input end of the triode is grounded through the fifth resistor and the first capacitor, the output end of the triode is grounded, and the output end of the triode is connected with the three-terminal voltage stabilizing tube is grounded through the third resistor, and the output end of the diode is connected with the voltage stabilizing tube.
Preferably, the temperature detection circuit comprises a sixth resistor, a thermosensitive circuit and a fourth capacitor, one end of the thermosensitive resistor is grounded, the other end of the thermosensitive resistor is externally connected with a 5V direct-current voltage power supply through the sixth resistor, one end of the fourth capacitor is grounded, and the other end of the fourth capacitor is respectively connected with the sixth resistor and the thermosensitive resistor and one of signal input ends of the CPU.
Preferably, the model of the optocoupler is PS2501L-1-E3-A, the working temperature of the optocoupler is between-40 ℃ and 130 ℃, and the optocoupler can be used in cooperation with various working condition environments of a frequency converter.
Preferably, the model of the CPU is STM32FRBT, STM32F series products are based on ARM Cortex-M0 processor cores with ultra-low power consumption, and the enhanced technology and functions are integrated, so that the application of ultra-low cost budget is aimed.
Preferably, the three-terminal voltage regulator tube is 78L15.
The beneficial effects of the utility model are as follows: in this energy-conserving speed governing converter radiator fan:
1. The temperature detection circuit detects the real-time temperature of the frequency converter, and the CPU collects the temperature signal of the temperature detection circuit, so that the temperature of the frequency converter is monitored in real time, and the real-time control of the cooling fan is met.
2. The CPU outputs PWM signals, and the PWM signals control the fan driving circuit to drive the working voltage of the cooling fan so as to adjust the rotating speed of the fan and meet the effects of energy conservation and speed regulation.
3. The fan driving circuit is added with the switch and the voltage stabilizing circuit mainly comprising the three-terminal voltage stabilizer, so that the working voltage protection of the cooling fan can be met, and the service life of the cooling fan is prolonged.
Drawings
The utility model will now be described by way of example and with reference to the accompanying drawings in which:
Fig. 1 is a schematic circuit diagram of the present utility model.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
As shown in FIG. 1, the energy-saving and speed-regulating frequency converter cooling fan comprises a CPU, a fan driving circuit and a temperature detection circuit, wherein the fan driving circuit and the temperature detection circuit are electrically connected with the CPU, the temperature detection circuit detects the real-time temperature of the frequency converter, the CPU outputs PWM signals after collecting temperature signals, the PWM signals control the working voltage of the fan driving circuit to drive the cooling fan, so that the rotating speed of the fan is regulated, and the energy-saving and speed-regulating effects are met.
The fan driving circuit comprises a switch S1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first diode D1, a second diode D2, a triode Q1, an optocoupler U2 and a three-terminal voltage regulator U3, wherein the first end of the optocoupler U2 is externally connected with a 5V direct-current voltage power supply, the second resistor R2 is connected in parallel between the first end and the second end of the optocoupler U2, the second end of the optocoupler U2 is connected with the signal input end of the CPU through the first resistor R1, the third end of the optocoupler U2 is grounded, the fourth end of the optocoupler U2 is externally connected with a 24V direct-current voltage power supply through a serial circuit formed by the third resistor R3 and the fourth resistor R4, the triode Q1 is a PNP triode Q1, the emitter of the triode Q1 is externally connected with a 24V direct-current voltage power supply, the base of the triode Q1 is respectively connected with a fourth resistor R4 and a third resistor R3, the collector of the triode Q1 is connected with the cathode of a first diode D1, the anode of the first diode D1 is grounded, the collector of the triode Q1 is connected with the input end of a three-terminal voltage-stabilizing tube U3, the input end of the three-terminal voltage-stabilizing tube U3 is grounded through a parallel circuit formed by a fifth resistor R5 and a first capacitor C1, the ground of the three-terminal voltage-stabilizing tube U3 is grounded, the output end of the three-terminal voltage-stabilizing tube U3 is respectively grounded through a second capacitor C2 and a third capacitor C3, the anode of the second diode D2 is connected with the input end of the three-terminal voltage-stabilizing tube U3, the cathode of the second diode D2 is connected with the output end of the three-terminal voltage-stabilizing tube U3, and the switch S1 is connected in parallel with the three-terminal voltage-stabilizing tube U3.
The working principle of the fan driving circuit is that after the CPU outputs PWM signals, the CPU performs voltage isolation through an optocoupler U2 and then controls the on-off of a triode Q1 to regulate the output voltage. And adjusting the power of the cooling fan according to the working temperature of the frequency converter. Of course, if the cooling fan works under high load for a long time, the service life of the cooling fan is reduced, and aiming at the cooling fan with the highest working voltage of 30V, the cooling fan can be selected to work for a period of time under the working voltage of 15V by opening the switch S1, so that the service life of the cooling fan is prolonged.
Specifically, the temperature detection circuit comprises a sixth resistor, a thermosensitive circuit and a fourth capacitor, one end of the thermosensitive resistor is grounded, the other end of the thermosensitive resistor is externally connected with a 5V direct-current voltage power supply through the sixth resistor, one end of the fourth capacitor is grounded, the other end of the fourth capacitor is respectively connected with the sixth resistor and the thermosensitive resistor and one of signal input ends of the CPU, the sixth resistor and the thermosensitive circuit form a series circuit, the thermosensitive resistor changes in temperature according to the temperature of the frequency converter, and the CPU detects the temperature according to the voltage value between the sixth resistor and the thermosensitive resistor.
Specifically, the model of the optical coupler U2 is PS2501L-1-E3-A, the working temperature of the optical coupler U2 is between-40 ℃ and 130 ℃, and the optical coupler U2 can be used in cooperation with various working condition environments of a frequency converter.
Specifically, the model of the CPU is STM32FRBT, STM32F series products are based on ARM Cortex-M0 processor cores with ultra-low power consumption, and the enhanced technology and functions are integrated, so that the application of ultra-low cost budget is aimed.
Specifically, the model of the three-terminal voltage regulator tube U3 is 78L15.
The present utility model has been made in view of the above-described circumstances, and it is an object of the present utility model to provide a portable electronic device capable of performing various changes and modifications without departing from the scope of the technical spirit of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. An energy-saving speed-regulating frequency converter radiator fan which is characterized in that: the device comprises a CPU, a fan driving circuit and a temperature detection circuit, wherein the fan driving circuit and the temperature detection circuit are electrically connected with the CPU;
The fan driving circuit comprises a switch, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, a triode, an optocoupler and a three-terminal voltage stabilizing tube, wherein the first end of the optocoupler is externally connected with a 5V direct-current voltage power supply, the second resistor is connected between the first end and the second end of the optocoupler in parallel, the second end of the optocoupler is connected with a signal input end of a CPU (Central processing unit) through the first resistor, the third end of the optocoupler is grounded, the fourth end of the optocoupler is externally connected with a 24V direct-current voltage power supply through a serial circuit formed by the third resistor and the fourth resistor, the triode is a PNP triode, the emitter of the triode is externally connected with a 24V direct-current voltage power supply, the base electrode of the triode is respectively connected with the fourth resistor and the third resistor, the collector of the triode is connected with the cathode of the third diode, the input end of the triode is grounded with the input end of the three-terminal voltage stabilizing tube, the input end of the triode is grounded through the fifth resistor and the first capacitor, the output end of the triode is grounded, and the output end of the triode is connected with the three-terminal voltage stabilizing tube is grounded through the third resistor, and the output end of the diode is connected with the voltage stabilizing tube.
2. The energy-saving speed-regulating inverter cooling fan as claimed in claim 1, wherein: the temperature detection circuit comprises a sixth resistor, a thermosensitive circuit and a fourth capacitor, one end of the thermosensitive resistor is grounded, the other end of the thermosensitive resistor is externally connected with a 5V direct-current voltage power supply through the sixth resistor, one end of the fourth capacitor is grounded, and the other end of the fourth capacitor is respectively connected with the sixth resistor and the thermosensitive resistor and one signal input end of the CPU.
3. The energy-saving speed-regulating inverter cooling fan as claimed in claim 1, wherein: the model of the optocoupler is PS2501L-1-E3-A.
4. The energy-saving speed-regulating inverter cooling fan as claimed in claim 1, wherein: the model of the CPU is STM32FRBT6.
5. The energy-saving speed-regulating inverter cooling fan as claimed in claim 1, wherein: the three-terminal voltage stabilizing tube is 78L15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323135468.5U CN221236933U (en) | 2023-11-21 | 2023-11-21 | Energy-saving speed-regulating frequency converter radiator fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323135468.5U CN221236933U (en) | 2023-11-21 | 2023-11-21 | Energy-saving speed-regulating frequency converter radiator fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221236933U true CN221236933U (en) | 2024-06-28 |
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ID=91593472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323135468.5U Active CN221236933U (en) | 2023-11-21 | 2023-11-21 | Energy-saving speed-regulating frequency converter radiator fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221236933U (en) |
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2023
- 2023-11-21 CN CN202323135468.5U patent/CN221236933U/en active Active
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