CN217354864U

CN217354864U - Temperature control speed regulator of direct current fan

Info

Publication number: CN217354864U
Application number: CN202222038936.6U
Authority: CN
Inventors: 李志海
Original assignee: Chengdu Jingzhicheng Electronic Technology Co ltd
Current assignee: Chengdu Jingzhicheng Electronic Technology Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-09-02
Anticipated expiration: 2032-08-04

Abstract

The utility model relates to a temperature control speed regulator field, the purpose is to provide a direct current fan temperature control speed regulator, the utility model discloses a speed regulator, the speed regulator is internally provided with an ARM single chip microcomputer, a relay and a fan, the ARM single chip microcomputer is connected with the fan, the speed regulator shell is provided with a display panel, a power plug, a signal lamp and a port, the display panel is arranged at one end of the speed regulator inside and is connected with the ARM single chip microcomputer, the power plug is used for connecting an external power supply and supplying power to the ARM single chip microcomputer, the speed regulator is externally connected with two temperature sensors, the two temperature sensors are connected with the ARM single chip microcomputer inside the speed regulator through the port, the signal lamp is arranged at one end of the speed regulator inside and is connected with the relay, one end of the relay is connected with the fan, the utility model has reasonable structure, strong practicability and high automation degree, is suitable for popularization.

Description

Temperature control speed regulator of direct current fan

Technical Field

The utility model relates to a control by temperature change speed regulator field, concretely relates to direct current fan control by temperature change speed regulator.

Background

With the progress and development of modern machinery, the functions of fans in the market are relatively complete at present, and the fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and ventilation and air induction of boilers and industrial furnaces, wherein most of the fans are used for heat dissipation of equipment, and the normal operation of the equipment is prevented from being influenced by overhigh temperature. CN202023059148.2, a vary voltage power supply direct current motor speed adjusting device, this utility model discloses a speed regulator of explosion-proof fan, its characterized in that includes: the direct current motor speed regulator comprises an outer shell, a voltage reduction module circuit board fixed in the outer shell and used for converting high-voltage current of a power supply into low-voltage direct current, and a direct current motor speed regulator used for regulating the rotating speed of a motor, wherein the direct current motor speed regulator is provided with a speed regulation knob extending out of the outer shell and used for regulating the rotating speed of the motor. The utility model discloses a place the direct current motor speed regulator of step-down module circuit board and being used for realizing adjusting new fan motor rotational speed in the shell body to can conveniently realize the remote speed governing control to new fan, and can realize stepless speed regulation control, and improve the selection scope of new fan mounted position greatly, but the unable auto-induction temperature of this speed regulator is adjusted the rotational speed of fan and with this to the fan, needs remote manual control, comparatively consumes the manpower.

Therefore, there is a need for a temperature control speed regulator for a dc fan, which can automatically balance the temperature and the rotating speed of the fan, and the rotating speed and the temperature of the fan are in direct proportion: the higher the temperature is, the faster the rotating speed of the fan is, and the lower the temperature is, the slower the rotating speed of the fan is, so that the effects of heat dissipation as required, energy conservation and noise reduction and fan service life prolonging are really achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a direct current fan control by temperature change speed regulator, the passer-through adopts the ARM chip as the core component, the real-time temperature measurement of dual temperature probe, the speed regulator controls the fan rotational speed (amount of wind) through the temperature that detects, the fan starts, the full speed temperature can be set freely, support two kinds of mode of working of minimum rotational speed and shut down the fan, the utility model discloses rational in infrastructure, design benefit, degree of automation is high, is fit for promoting;

in order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a direct current fan control by temperature change speed regulator, includes the speed regulator, the inside ARM singlechip, relay and the fan that is provided with of speed regulator, the ARM singlechip with the fan is connected, be provided with display panel, power plug, signal lamp and port on the speed regulator shell, display panel is located the inside one end of speed regulator with the ARM singlechip is connected, power plug be used for connecting external power source and to the power supply of ARM singlechip, the speed regulator is external to have two temperature-sensing wares, two the temperature-sensing ware passes through the port and is connected with the inside ARM singlechip of speed regulator, the signal lamp is located the inside one end of speed regulator is connected with the relay, the one end of relay is connected with the fan.

Preferably, the two temperature sensors are used for collecting external temperature and converting the external temperature into a temperature signal to be transmitted to the ARM single chip microcomputer, and a plurality of external ports are formed in the speed regulator.

Preferably, a key is arranged on the speed regulator below the display panel, all input parameters of the ARM single chip microcomputer are set through the key, and the display panel displays the current temperature in real time.

Preferably, the speed governor identifies that the temperature is greater than the lowest value of the set temperature interval, then the fan is controlled to operate, and the speed governor adjusts the rotating speed of the fan according to the linear proportion.

Preferably, after the ARM single chip microcomputer is normally powered on, the POW lamp on the speed regulator is turned on, the ARM single chip microcomputer identifies the temperatures detected by the two temperature sensors, and the ARM single chip microcomputer controls the fan through a higher temperature value detected by the temperature sensors.

Preferably, when the relay detects that the fan abnormally stops rotating, the relay is closed and controls the indicator lamp to light, and the relay is used as an indication signal to be connected to a switching value input port of the PLC/industrial personal computer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the rotational speed of fan is controlled according to the ambient temperature on-the-spot to cooperation temperature-sensing ware real-time identification ambient temperature, when the temperature reachd the radiating temperature interval of needs that sets up, ARM single chip microcomputer control fan operation dispels the heat, and the temperature increase that the temperature-sensing ware detected out, the rotational speed increase of ARM single chip microcomputer control fan, with this realization, fan rotational speed and temperature are directly proportional: the higher the temperature is, the faster the rotating speed of the fan is, the lower the temperature is, the slower the rotating speed of the fan is, and the temperature interval is adjusted according to the heat dissipation and operation requirements of equipment;

2. according to the temperature and the rotating speed of the fan, the effects of heat dissipation as required, energy conservation and noise reduction and fan service life prolonging are really achieved.

Drawings

Fig. 1 is a shape diagram of a temperature control speed regulator of a direct current fan.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to fig. 1 of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, those skilled in the art can realize all other implementations without any creative effort.

The utility model discloses a heat radiator, including the speed regulator, inside ARM singlechip, relay and the fan of being provided with of speed regulator, the ARM singlechip with the fan is connected, be provided with display panel, power plug, signal lamp and port on the speed regulator shell, display panel is located the inside one end of speed regulator with the ARM singlechip is connected, power plug be used for connecting external power supply and to the ARM singlechip supplies power, the speed regulator is external to have two temperature-sensing wares, two the temperature-sensing ware passes through the port and is connected with the inside ARM singlechip of speed regulator, the signal lamp is located the inside one end of speed regulator is connected with the relay, the one end and the fan of relay are connected.

It is worth to explain that the speed regulator of the embodiment is provided with an LED for indicating, the working state of the speed regulator is visually indicated, the design of reverse connection protection of the power supply is adopted, the equipment cannot be damaged when the power supply is connected reversely, the temperature of the fan can be freely set when the fan is started and at full speed, two working modes of minimum rotating speed and fan shutdown are supported, the detection of the rotating speed of the fan and the fault detection of the fan are supported, a self-contained dry contact (relay) signal is output, the RS485 serial port communication is supported, the standard modbus-Rtu protocol is adopted, the design of surge prevention of the TVS of the RS485 serial port is adopted, and the serial port parameters are 9600bps,8, N and 1.

It is worth explaining that the speed regulator of the utility model is directly connected with 12V/24V/48V four-wire PWM fan/motor, the maximum driving current is 12A, the temperature is measured by the double sensors, and at most 8 fans are connected simultaneously; the PWM output frequency is 25Khz, the amplitude is 5V/10V, and the temperature measuring range is as follows: -10 to 99 ℃, and temperature measurement precision: ± 1 ℃, working temperature: and the temperature is-30 to 80 ℃, and two installation modes of supporting a guide rail and fixing a screw are adopted.

It is worth mentioning that terminal No. 1: the speed regulator supplies power plus the extremely interface; terminal No. 2: a speed regulator power supply-pole interface; terminal No. 3: RS485 serial port A/D +; terminal No. 4: RS485 serial port B/D-; no. 5 is connected with a fan power line-, No. 6 is connected with the fan power line +, No. 7 is connected with a FG rotating speed signal of the fan, and No. 8 is connected with a PWM control line of the fan; the No. 5-No. 8 terminal is mainly used for facilitating the wiring of a fan without a plug, and is directly connected with a 4-bit contact pin of a No. 12 interface; interface 9 No. 1 temperature sensor interface, interface 10: a No. 2 temperature sensor interface; terminal No. 11: fan fault signal output indication (relay) port; position No. 12: the LED indicator light comprises a POW (power supply) indicator light for the whole machine and a FAN (FAN start indicator light); interface No. 13~ 20: 1 st to 8 th fan interfaces, standard KF2510-4P seats (line sequence: Fv-, Fv +, FG, PWM).

It is worth to be noted that, a power supply is connected according to the interface description, after the power supply is normal, the POW lamp on the main board can be lighted, the speed regulator starts to identify the temperatures detected by the two temperature sensors, and when the temperature is higher, the rotation speed of the fan can be adjusted by taking the temperature value of which the speed regulator is used, taking the default temperature interval of the speed regulator from the factory as an example, the default temperature interval of the speed regulator from the factory is L =30 ℃ and H =50 ℃, when the current temperature detected by one of the temperature sensors is greater than or equal to 30 ℃, the speed regulator adjusts the rotation speed of the fan according to a linear proportion, the temperature is increased, the rotation speed of the fan is accelerated, when the temperature is greater than or equal to 50 ℃, the fan becomes full speed, and when the temperature is reduced to less than or equal to 27 ℃ (L-3), the speed regulator enables the fan to be at the minimum rotation speed or shuts down the fan.

It is worth to explain, the speed gauge internal integration one miniwatt relay (dry contact), mainly used instructs the fan abnormal stall, both can insert to the switching value input port of PLC/industrial computer as the instruction signal, also can directly control other miniwatt equipment relay parameter as the switch: AC250V/DC30V, maximum load current 3A, relay is off (COM and NO off, NC on) when fan is normal, relay is closed (COM and NO on, NC off) when abnormal fan stall is detected.

It is worth to say that the speed regulator supports two voltage PWM signal outputs, 5V/10V, generally, domestic mainstream 4-wire fans only need to select 5V voltage PWM signals, but some imported or special fans may need 10V PWM signals to regulate speed; the user can adjust the PWM voltage of the speed regulator according to the actual situation.

It is worth to be noted that the display panel displays the temperature in real time, 4 keys are provided, all parameters of the speed regulator can be set through the keys, in a standby state, a ≧ key can be pressed to manually switch and display temperature values detected by two temperature sensors, in the standby state, a MODE key can be pressed to enter a configuration/switching parameter item, in the configuration process, a ↕ key can be pressed to adjust a numerical value, an OK key is used for confirmation, in the standby state, the panel displays the current temperature value, a MODE key is pressed 1, a nixie tube displays Lxx, L represents a starting temperature, xx represents the currently set temperature value, in the up-down key, the parameter value can be adjusted, after the adjustment is completed, the OK key is used for confirmation, and a standby interface is returned; in a standby state, pressing a MODE key 2, displaying Hxx by a nixie tube, displaying the current set temperature value by H, and displaying the current set temperature value by xx, wherein the parameter value can be adjusted by pressing an up-down key, and after the adjustment is finished, pressing an ok key for confirmation; after the setting is finished, the speed regulator automatically controls the rotating speed of the fan according to the newly set temperature parameter; the other parameters are set similarly to the above steps.

To sum up, the utility model discloses an implementation principle does: when in actual use, can come the rotational speed of control fan according to ambient temperature to cooperation temperature-sensing ware real-time identification ambient temperature, when the temperature reachd the radiating temperature interval of needs that sets up, the operation of ARM single chip microcomputer control fan dispels the heat, and the temperature increase that the temperature-sensing ware detected out, the rotational speed increase of ARM single chip microcomputer control fan, with this realization, fan rotational speed and temperature are directly proportional: the higher the temperature is, the faster the rotating speed of the fan is, the lower the temperature is, the slower the rotating speed of the fan is, and the temperature interval is adjusted according to the heat dissipation and operation requirements of equipment.

Claims

1. The utility model provides a direct current fan control by temperature change speed regulator, a serial communication port, including the speed regulator, inside ARM singlechip, relay and the fan of being provided with of speed regulator, the ARM singlechip with the fan is connected, be provided with display panel, power plug, signal lamp and port on the speed regulator shell, display panel is located the inside one end of speed regulator with the ARM singlechip is connected, power plug is used for connecting external power source and to the ARM singlechip power supply, the speed regulator is external to have two temperature-sensing wares, two the temperature-sensing ware passes through the port and is connected with the inside ARM singlechip of speed regulator, the signal lamp is located the inside one end of speed regulator is connected with the relay, the one end of relay is connected with the fan.

2. The temperature-controlled speed regulator of a direct current fan according to claim 1, wherein the two temperature sensors are used for collecting external temperature and converting the external temperature into temperature signals to be transmitted to the ARM single chip microcomputer, and a plurality of external ports are arranged on the speed regulator.

3. The temperature-controlled speed regulator of a direct current fan according to claim 1, wherein a key is provided on the speed regulator below the display panel, all input parameters of the ARM single chip microcomputer are set through the key, and the display panel displays the current temperature in real time.

4. The direct current fan temperature control speed regulator of claim 3, wherein the speed regulator controls the fan to operate if the recognition temperature is higher than the lowest value of the set temperature interval, and the speed regulator regulates the fan speed in linear proportion.

5. The temperature-controlled speed regulator of claim 1, wherein after the ARM single chip microcomputer is powered normally, a POW lamp on the speed regulator is turned on, the ARM single chip microcomputer recognizes temperatures detected by the two temperature sensors, and the ARM single chip microcomputer controls the fan through a higher temperature value detected by the temperature sensors.

6. The direct current fan temperature control speed regulator according to claim 1, wherein when the relay detects abnormal stop of the fan, the relay is closed and controls the indicator light to light, and the relay is connected to a switching value input port of the PLC/industrial personal computer as an indication signal.