Energy-saving control fan

Abstract

An energy-saving control fan relates to the technical field of fans used for heat dissipation of electrical equipment. To solve the technical deficiency that fans used for heat dissipation of existing electrical equipment cannot realize independent intelligent control, the fan includes a first temperature control switch module and a second temperature control switch module connected in series with the motor; the first temperature control switch module, the second temperature control switch module and the motor are connected in series, the first temperature control switch module is turned on after detecting that the temperature reaches a low temperature preset value, and the second temperature control switch module is disconnected after detecting that the temperature reaches a high temperature preset value. When the ambient temperature is low or in the initial stage of equipment startup, the motor runs at a low speed to achieve the technical effect of energy saving and solving fan noise. When the motor temperature is too high, it means that a fault has occurred, and the motor power supply can be cut off in time to achieve the purpose of safety protection.

Description

Technical Field

[0001] The invention relates to the technical field of fans used for heat dissipation of electrical equipment. Background Art

[0002] Existing cabinets, power equipment inverters, and cooling fans used in servers are all ordinary fans. When the equipment system is started and the fan is powered on, the equipment system and the fan generally work independently. The equipment system cannot know the operating status of the fan. The fan is prone to wear and jamming or blockage by foreign objects, causing the motor to heat up, leading to cabinet fires, server fires, etc.

[0003] In addition, since the cooling fan does not need to be started all the time during the operation of the equipment, for example, in the cold winter when the ambient temperature is low, or for a period of time when the equipment is just started, or in a low-power operation state, the existing fans cannot be turned on and off by themselves, which not only wastes electricity but also generates noise. To solve this problem, the existing solution relies on the system equipment to control its working power supply, which puts higher requirements on the system equipment and has poor versatility. Summary of the invention

[0004] In summary, the purpose of the present invention is to solve the technical deficiency that the fans used for heat dissipation of existing electrical equipment cannot realize independent and intelligent control, and to propose an energy-saving control fan.

[0005] In order to solve the technical problem proposed by the present invention, the technical solution adopted is:

[0006] An energy-saving control fan includes a bracket, a motor and fan blades, the motor is installed on the bracket, and the motor is connected to drive the fan blades; it is characterized in that it also includes a first temperature control switch module and a second temperature control switch module connected in series with the motor; the first temperature control switch module, the second temperature control switch module and the motor are connected in series, the first temperature control switch module is turned on after detecting that the temperature reaches a low temperature preset value, and the second temperature control switch module is turned off after detecting that the temperature reaches a high temperature preset value.

[0007] The technical solutions for further limiting the present invention include:

[0008] The first temperature control switch module is a first thermistor that is turned on when the temperature rises above 40 degrees.

[0009] The second temperature control switch module is a temperature control switch that is disconnected when the temperature rises above 130 degrees.

[0010] Alternatively, the first temperature control switch module includes a first temperature sensor for detecting the external temperature, and a low-temperature control switch for controlling the direct conduction between the motor and the power input circuit according to the sensing signal of the first temperature sensor; the low-temperature control switch is connected in parallel with a motor low-speed operation control circuit; the second temperature control switch module includes a second temperature sensor arranged inside the motor, and a high-temperature control switch for controlling the disconnection of the motor circuit according to the sensing signal of the second temperature sensor.

[0011] The first temperature sensor is arranged on the inner surface of the bracket, and the low temperature control switch is directly turned on when the temperature signal provided by the first temperature sensor is higher than the startup preset value; the high temperature control switch is disconnected when the temperature signal provided by the second temperature sensor is higher than the shutdown preset value.

[0012] It also includes a temperature control alarm module; the temperature control alarm module includes a buzzer and an alarm control switch connected to the second temperature sensor and used to control the buzzer to generate a sound alarm.

[0013] The fan blade is provided with an LED lamp, which is connected to a wireless induction receiving coil; the bracket is provided with a wireless induction transmitting coil, which is arranged correspondingly to the wireless induction receiving coil, and the wireless induction transmitting coil is connected in parallel with the motor.

[0014] The stator of the motor is also provided with a secondary winding, and the coupling voltage output end of the secondary winding supplies power to the wireless induction transmitting coil and the temperature control alarm module.

[0015] The beneficial effects of the present invention are as follows: the present invention adds a first temperature control switch module and a second temperature control switch module connected to a control motor on the basis of a traditional fan. When the ambient temperature is low or the equipment is started up, and the temperature on the radiator has not risen to the point where the fan motor needs to be turned on, the motor runs at a low speed and can automatically run according to the environment, thereby achieving the technical effects of energy saving and solving fan noise problems. The invention is also economical and has good compatibility. Since the motor is in a normal working state, the motor temperature will not be too high. When the motor temperature is too high, it indicates a fault, and the motor power supply can be cut off in time to achieve the purpose of safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the decomposition structure of the present invention.

[0018] Figure 3 It is a block diagram of the structural principle of the present invention. DETAILED DESCRIPTION

[0019] The structure of the present invention is further described below in conjunction with the accompanying drawings and preferred specific embodiments of the present invention.

[0020] Reference Figures 1 to 3 As shown in the figure, an energy-saving control fan of the present invention includes a bracket 1, a motor 2 and a fan blade 3, the motor 2 is installed on the bracket 1, and the motor 2 is connected to drive the fan blade 3; it also includes a first temperature control switch module and a second temperature control switch module connected in series with the motor; the first temperature control switch module, the second temperature control switch module and the motor are connected in series, the first temperature control switch module is turned on after detecting that the temperature reaches a low temperature preset value, and the second temperature control switch module is disconnected after detecting that the temperature reaches a high temperature preset value.

[0021] Among them, the first temperature control switch module is mainly used to detect the external ambient temperature, or to detect the temperature of the radiator or heat sink that needs to dissipate heat. For example, when the temperature is detected to be lower than 40 degrees, the first temperature control switch module remains in the disconnected state, and the motor 2 is in a low-speed operation state; the low speed referred to is relative to the normal operating speed of the motor 2, which ensures that the fan blades 3 of the present invention can rotate after power is turned on, and the naked eye can visually confirm that the circuit of the motor 2 is normal. At this time, the present invention does not play a substantial heat dissipation role, thereby achieving the technical effect of energy saving and solving fan noise.

[0022] Specific solution 1 for realizing the above functions: the first temperature control switch module is a first thermistor that is turned on after the temperature rises to above 40 degrees. Solution 2: the first temperature control switch module includes a first temperature sensor for detecting the external temperature, and a low temperature control switch that controls the direct conduction between the motor and the power input circuit according to the sensing signal of the first temperature sensor; the low temperature control switch is connected in parallel with a motor low speed operation control circuit. The motor low speed operation control circuit can specifically be a resistor connected in series between the power input circuit and the motor 2. When the low temperature control switch is turned on, the resistor is short-circuited. The first temperature sensor is preferably arranged on the inner surface 11 of the bracket 1. When the bracket 11 is fixed to the required heat dissipation component, the first temperature sensor can be directly connected to the required heat dissipation component in close contact, or the first temperature sensor can be installed on the side 12 of the motor mounting seat of the bracket 1. The low temperature control switch is turned on after the temperature signal provided by the first temperature sensor is higher than the startup preset value.

[0023] The second temperature control switch module is mainly used for safety protection. It is turned on under normal circumstances. Only when the motor temperature exceeds the normal heating temperature will the power supply of the motor be disconnected to prevent the fan from being easily worn, stuck, or blocked by foreign objects, causing the motor to heat up, leading to cabinet fire, server fire, etc.

[0024] The implementation scheme may be: the second temperature control switch module is a temperature control switch that is disconnected after the temperature rises to above 130 degrees. It may also be: the second temperature control switch module includes a second temperature sensor disposed inside the motor 2, and a high temperature control switch that controls the motor circuit to disconnect according to the sensing signal of the second temperature sensor. The high temperature control switch is connected in series with the motor, and the high temperature control switch is disconnected after the temperature signal provided by the second temperature sensor is higher than the shutdown preset value. The shutdown preset value may be 130 degrees, for example. After it is higher than 130 degrees, the motor of the present invention enters a power-off protection state, and all circuits of the present invention are powered off and do not work.

[0025] In order for the present invention to detect and remind abnormal heating before the power-off protection state is reached, the present invention also includes a temperature control alarm module; the temperature control alarm module includes a buzzer, and an alarm control switch connected to the second temperature sensor for controlling the buzzer to sound an alarm. For example, when the second temperature sensor detects that the internal temperature of the motor rises to 110, the alarm control switch is turned on, and the buzzer starts to alarm, reminding manual intervention for troubleshooting. In the specific implementation process, the alarm control switch can also be an independent temperature control switch, which does not need to be connected to the second temperature sensor.

[0026] Since the indicator lights or decorative lights of the existing fans are bound by the power cord, they are generally fixedly installed, and the dynamic effect diagram is not conducive to the dynamic display of the logo. In the present invention, an LED light is provided on the fan blade 3, and the LED light is connected to a wireless induction receiving coil 41, which can be installed on the inner side of the center of the fan blade 3; a wireless induction transmitting coil 42 is provided on the bracket 1 or the stator of the motor, and the wireless induction transmitting coil 42 is correspondingly arranged with the wireless induction receiving coil 41, and the wireless induction transmitting coil is connected in parallel with the motor 2. Thus, the wireless power supply connection of the LED light is realized, and the LED light can rotate with the fan blade 3, and a single point light source can be converted into an annular surface light source. At the same time, the visual effect of the LED light can also be used to intuitively feedback the transportation state of the motor. When the motor stops, the point light source is displayed, and the running state is an annular surface light source. Before the first temperature control switch module is not turned on, although the fan speed is low, as long as the LED light is on, it indicates that the fan is working normally, avoiding the wrong judgment that the fan has quality problems due to the low speed. When the ambient temperature is higher than 40 degrees, the first temperature control switch module is fully turned on, the resistance value is 0, and the fan runs at full speed.

[0027] Since the motor 2 generally operates on 220V AC power, and the buzzer and the wireless induction transmitting coil 42 generally require a safe low-voltage power supply, the present invention also provides a secondary winding on the stator of the motor, and the coupling voltage output end of the secondary winding supplies power to the wireless induction transmitting coil and the temperature control alarm module.

Claims

1. An energy-saving control fan, comprising a bracket, a motor and a fan blade, wherein the motor is mounted on the bracket and connected to drive the fan blade; characterized in that: It also includes a first temperature control switch module and a second temperature control switch module connected in series with the motor; the first temperature control switch module, the second temperature control switch module and the motor are connected in series, the first temperature control switch module is turned on after detecting that the temperature reaches a low temperature preset value, and the second temperature control switch module is disconnected after detecting that the temperature reaches a high temperature preset value; the first temperature control switch module includes a first temperature sensor for detecting the external temperature, and a low temperature control switch for controlling the motor to be directly connected to the power input circuit according to the sensor signal of the first temperature sensor; the low temperature control switch is connected in parallel with a motor low speed operation control circuit; the second temperature control switch module includes a second temperature sensor arranged inside the motor, and a high temperature control switch for controlling the motor circuit to be disconnected according to the sensor signal of the second temperature sensor; the first temperature sensor is arranged on the inner surface of the bracket, and the low temperature control switch is directly turned on after the temperature signal provided by the first temperature sensor is higher than the startup preset value; the high temperature control switch is disconnected after the temperature signal provided by the second temperature sensor is higher than the shutdown preset value; It also includes a temperature control alarm module; the temperature control alarm module includes a buzzer and an alarm control switch connected to the second temperature sensor for controlling the buzzer to sound an alarm; The fan blade is provided with an LED lamp, which is connected to a wireless induction receiving coil; the bracket is provided with a wireless induction transmitting coil, which is arranged correspondingly to the wireless induction receiving coil, and the wireless induction transmitting coil is connected in parallel with the motor; The stator of the motor is also provided with a secondary winding, and the coupling voltage output end of the secondary winding supplies power to the wireless induction transmitting coil and the temperature control alarm module.

2. The energy-saving control fan according to claim 1, characterized in that: The first temperature control switch module is a first thermistor that is turned on when the temperature rises above 40 degrees.

3. The energy-saving control fan according to claim 1, characterized in that: The second temperature control switch module is a temperature control switch that is disconnected when the temperature rises above 130 degrees.

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