A fan structure, a heat dissipation system, an air conditioner and a control method

Abstract

The application provides a fan structure, a heat dissipation system, an air conditioner and a control method, and the fan structure comprises: a fan component which is rotatably arranged; a control module which is signal-connected with the fan component to send a driving signal to the fan component; and a power generation module which is arranged correspondingly with the fan component, and when the fan component rotates, the power generation module generates power by using kinetic energy of the fan component to send an electric signal to the control module. When the fan component moves, the power generation module generates power, and the control module infers whether the fan component moves according to the electric signal generated by the power generation module, so that whether the fan component normally works can be judged. Since the generation of electric energy occurs instantaneously, the staff can know the change of the fan component state in the first time, so that the technical problem that the fan cannot be easily found in time when an abnormal condition occurs is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the fan technical field, specifically relates to a fan structure, heat dissipation system, air conditioner and control method. BACKGROUND

[0002] At present, the main means of heat dissipation of the core heating components of the photovoltaic inverter and other products developed in the industry is air cooling heat dissipation. The common heat dissipation device uses an aluminum radiator to tightly attach to the heating components, and a heat dissipation fan is installed beside the aluminum radiator to build an air duct. The heat is dissipated to the outside of the unit by the method of blowing or sucking air. This heat dissipation method requires the heat dissipation fan to have high reliability.

[0003] However, most of the heat dissipation fans used in the industry at present cannot feedback the running state of the fan at every moment. When the fan motor is burned out and stops, the unit cannot know the situation in the first time, and still runs at the current power, which causes the core heating components to continuously heat up and damage the photovoltaic inverter. This is a big safety hazard for the photovoltaic inverter. SUMMARY

[0004] The purpose of the present application is to overcome the above technical deficiencies and provide a fan structure, heat dissipation system, air conditioner and control method to solve the technical problem that the fan is not easy to be discovered in time when an abnormal situation occurs in the related technology.

[0005] To achieve the above technical purpose, the present application adopts the following technical scheme: a fan structure is provided, which comprises:

[0006] A fan component is rotatably arranged;

[0007] A control module is signal connected with the fan component to send a driving signal to the fan component;

[0008] A power generation module is arranged corresponding to the fan component. When the fan component rotates, the power generation module generates electricity by using the kinetic energy of the fan component to send an electric signal to the control module.

[0009] Further, the power generation module comprises:

[0010] A power generation fan is connected with the fan component. The power generation fan is driven to rotate by the rotation of the fan component, so that the power generation fan drives the motor to cut the magnetic induction lines to generate an electric signal.

[0011] Further, the fan structure comprises:

[0012] A support is provided with a positioning hole;

[0013] A driving shaft, which is rotatably connected with the support, and which is connected with the fan component and the power generation fan; the fan component and the power generation fan are driven to rotate by rotating the driving shaft.

[0014] Further, the fan structure comprises a temperature sensing component, which is signal connected with the control module; the control module transmits the driving signal to the fan component according to the temperature detected by the temperature sensing component.

[0015] Further, the fan structure comprises:

[0016] A triode Q1, which is connected with the control module to send a signal to the gate of the triode Q1;

[0017] A photo-coupler U1, which is connected with the emitter of the triode Q1;

[0018] A switching power supply, which is connected with the photo-coupler U1; the switching power supply is electrically connected with the fan component;

[0019] Wherein, the photo-coupler U1 turns on or turns off the circuit between the switching power supply and the fan component according to the signal of the triode Q1.

[0020] Further, the fan structure comprises an operational amplifier U1, which is connected with the power generation module; the operational amplifier U1 is connected with the control module; the operational amplifier U1 compares the electric signal generated by the power generation module to send an electric signal to the control module.

[0021] Further, the fan structure comprises:

[0022] A rectification module, which is connected with the power generation module to convert the alternating current output by the power generation module into direct current;

[0023] A resistor R4, which is connected with the rectification module; the resistor R4 is connected with the positive pole of the operational amplifier U1 to make the direct current output by the rectification module input the positive pole of the operational amplifier U1 after passing through the resistor R4.

[0024] A heat dissipation system, which comprises the fan structure as described above.

[0025] An air conditioner, which comprises the fan structure as described above.

[0026] A control method, which is suitable for the fan structure as described above, and the control method comprises:

[0027] The control module sends a driving signal to the fan component to drive the fan component to work.

[0028] The control module determines whether the fan component is abnormal according to the electric signal sent by the power generation module.

[0029] Further, the method for the control module to send a driving signal to the fan component further comprises:

[0030] Detecting the temperature of the component to be cooled;

[0031] When the temperature of the component to be cooled is greater than a preset temperature, the control module sends a driving signal to the fan component to cool the component to be cooled; when the temperature of the component to be cooled is not greater than the preset temperature, the control module does not send a driving signal to the fan component.

[0032] Further, the method for determining whether the fan component is abnormal comprises:

[0033] Detecting the voltage value sent by the power generation module;

[0034] If the voltage value is greater than a voltage threshold value, it is determined that the fan component has no failure;

[0035] If the voltage value is less than the voltage threshold value, it is determined that the fan component has a failure.

[0036] Beneficial effects:

[0037] 1、The fan structure of the present application comprises: a fan component rotatably arranged; a control module connected in signal with the fan component to send a driving signal to the fan component; and a power generation module arranged in correspondence with the fan component, which generates power by using the kinetic energy of the fan component when the fan component rotates to send an electric signal to the control module. When the fan component moves, the power generation module generates power, and the control module determines whether the fan component moves according to the electric signal sent by the power generation module, so as to determine whether the fan component works normally. Since the generation of electric energy occurs instantaneously, the staff can know the change of the state of the fan component at the first time, thereby solving the technical problem that the fan cannot be found in time when an abnormal condition occurs.

[0038] 1、The fan structure of the present application can identify the fault information in time after the cooling fan fails through real-time monitoring;

[0039] 2、The fault identification speed of the fan structure of the present application is superior to the method of determining by the temperature change rate;

[0040] 3、The fan structure of the present application is conducive to the fan unit to respond to the cooling fan in the first time, prevent the temperature from rising continuously, and prevent the core components from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a schematic diagram of the circuit structure of the fan structure adopted by the embodiment of the present application;

[0042] Figure 2 is a control schematic diagram of the circuit structure of the fan structure adopted by the embodiment of the present application;

[0043] Figure 3 is a structural schematic diagram of the fan structure adopted by the embodiment of the present application;

[0044] Figure 4 is a side view of the fan structure adopted by the embodiment of the present application;

[0045] Figure 5 is a flow chart of the control method provided by the embodiment of the present application.

[0046] Among the above drawings, the following reference signs are included:

[0047] 10, component to be cooled;

[0048] 1, fan component; 2, control module; 3, power generation module; 31, power generation fan; 4, support; 41, positioning hole; 5, drive shaft; 6, temperature sensing component; 7, switching power supply; 8, rectifier module. DETAILED DESCRIPTION

[0049] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present application.

[0050] Referring to Figures 1 to 5 According to the embodiment of the present application, a fan structure is provided, comprising: a fan component 1 rotatably arranged; a control module 2 signal connected with the fan component 1 to send a driving signal to the fan component 1; and a power generation module 3 arranged correspondingly with the fan component 1, which generates electricity by using the kinetic energy of the fan component 1 when the fan component 1 rotates to send an electric signal to the control module 2.

[0051] Referring to Figures 1 to 5, when the fan component 1 moves, the power generation module 3 generates electricity, and the control module 2 infers whether the fan component 1 moves according to the electric signal generated by the power generation module 3, so that it can be judged whether the fan component 1 works normally. Because the generation of electric energy occurs instantaneously, the staff can know the change of the fan component 1 state in the first time, thereby solving the technical problem that the fan is not easy to be discovered in time when an abnormal situation occurs.

[0052] In the fan structure of the embodiment, referring to Figure 1 , the power generation module 3 comprises: a power generation fan 31 connected with the fan component 1; the power generation fan 31 is driven to rotate by rotating the fan component 1, so that the power generation fan 31 drives the motor to cut the magnetic induction line, thereby generating an electric signal.

[0053] Specifically, an alternating current generator is arranged, when the fan component 1 rotates, the power generation fan 31 is driven to rotate, that is, the alternating current generator rotates, cuts the magnetic induction line to generate induced electromotive force, and outputs alternating current generation signal. The structure is simple and convenient to set.

[0054] In the fan structure of the embodiment, referring to Figure 3 , Figure 4 , the fan structure comprises: a support 4, the support 4 is provided with a positioning hole 41; a drive shaft 5, the drive shaft 5 is rotatably connected with the support 4, the drive shaft 5 is connected with the fan component 1 and the power generation fan 31; the fan component 1 and the power generation fan 31 are driven to rotate by rotating the drive shaft 5.

[0055] With the above arrangement, the fan component 1 and the power generation fan 31 are coaxially arranged, when the fan component 1 rotates, the power generation fan 31 can be driven to rotate at the same time, thereby saving the load of the motor driving the fan to rotate, and saving electric energy.

[0056] Specifically, the power generation fan 31 of the embodiment selects a fan smaller in size than the fan component 1, thereby saving the load of the motor driving the fan to rotate, and saving electric energy.

[0057] In the fan structure of the embodiment, referring to Figure 3 , Figure 4 , the fan structure comprises a temperature sensing component 6, the temperature sensing component 6 is signal connected with the control module 2, and the control module 2 transmits the drive signal to the fan component 1 according to the temperature detected by the temperature sensing component 6.

[0058] Specifically, when the temperature of the component 10 to be cooled transmitted back by the temperature sensing component 6 in real time is lower than the set limit value, the control module 2 sends a driving signal to control the fan component 1 to rotate, thereby cooling the component 10 to be cooled; when the temperature of the component 10 to be cooled transmitted back by the temperature sensing component 6 in real time is not lower than the set limit value, the control module 2 does not send a driving signal, and the fan component 1 stops working, thereby meeting the cooling demand of the fan.

[0059] In the fan structure of the embodiment, referring to Figure 1 , the fan structure comprises a triode Q1, the control module 2 is connected with the triode Q1 to send a signal to the gate of the triode Q1; an optical coupler U1, the emitter of the triode Q1 is connected with the optical coupler U1; a switching power supply 7, the switching power supply 7 is connected with the optical coupler U1; the switching power supply 7 is electrically connected with the fan component 1; wherein the optical coupler U1 turns on or turns off the circuit between the switching power supply 7 and the fan component 1 according to the signal of the triode Q1.

[0060] Specifically, when it is detected that the temperature of the current conversion unit transmitted back by the temperature sensing bag in real time is lower than the set limit value, the MCU sends a low-level control signal to the gate of the triode Q1 through the resistor R1, controls the triode Q1 to turn off, thereby making Vcc unable to control the optical coupler U1 to turn on, the switching power supply unable to supply power to the fan component 1, and the fan component 1 stops working.

[0061] In the fan structure of the embodiment, referring to Figure 1 , the fan structure comprises an operational amplifier U1, the operational amplifier U1 is connected with the power generation module 3; the operational amplifier U1 is connected with the control module 2; the operational amplifier U1 compares the electrical signal generated by the power generation module 3, thereby sending an electrical signal to the control module 2.

[0062] In this way, the strength of the electrical signal emitted by the power generation module 3 is judged by the operational amplifier U1, thereby judging the movement state of the fan component 1, and whether the fan component 1 is damaged is conveniently judged.

[0063] Referring to Figure 1 , in the fan structure of the embodiment, the fan structure comprises a rectification module 8, the rectification module 8 is connected with the power generation module 3 to convert the alternating current output by the power generation module 3 into direct current; a resistor R4, the resistor R4 is connected with the rectification module 8, and the resistor R4 is connected with the positive electrode of the operational amplifier U1, so that the direct current output by the rectification module 8 is input to the positive electrode of the operational amplifier U1 after passing through the resistor R4.

[0064] Specifically, the voltage across the resistor R4 is connected to the positive terminal of the operational amplifier U1, and the voltage is compared with the voltage Vref at the negative terminal of the operational amplifier U1 by the operational amplifier, if the voltage across the resistor R4 is greater than Vref, the output end of the operational amplifier U1 outputs a high level, informing the MCU control chip that the fan component 1 is in a normal working state at this time, if the voltage across the resistor R4 is less than Vref, the MCU control chip is informed that the fan component 1 is in a fault stall state at this time, and the whole machine photovoltaic air conditioner needs to react to the fault.

[0065] The heat dissipation system of the embodiment comprises a fan structure, which is the fan structure described above.

[0066] Specifically, the heat dissipation system of the embodiment adopts the fan structure described above, and when the fan component 1 of the heat dissipation system is abnormal, it can be detected in time, thereby ensuring the heat dissipation efficiency of the heat dissipation system.

[0067] Specifically, the air conditioner of the embodiment adopts the fan structure described above, and when the fan component 1 of the heat dissipation system is abnormal, it can be detected in time, thereby ensuring the normal operation of the air conditioner.

[0068] The control method of the embodiment is suitable for the fan structure described above, and the control method comprises: the control module 2 sends a driving signal to the fan component 1 to drive the fan component 1 to work; and the control module 2 judges whether the fan component 1 is abnormal according to the electric signal emitted by the power generation module 3.

[0069] With the above arrangement, a control method for self-identification of fan component 1 failure is provided, and the fault information can be identified in the first time after the fan component 1 fails.

[0070] In the control method of the embodiment, referring to Figure 5 , the method for the control module 2 to send a driving signal to the fan component 1 further comprises: detecting the temperature of the component to be cooled; when the temperature of the component to be cooled is greater than a preset temperature, the control module 2 sends a driving signal to the fan component 1 to cool the component to be cooled; and when the temperature of the component to be cooled is not greater than the preset temperature, the control module 2 does not send a driving signal to the fan component 1.

[0071] In this way, when the temperature of the component to be cooled 10 transmitted in real time is lower than the set limit, the control module 2 sends a driving signal to control the fan component 1 to rotate, thereby cooling the component to be cooled 10, and when the temperature of the component to be cooled 10 transmitted in real time is not lower than the set limit, the control module 2 does not send a driving signal, and the fan component 1 stops working, thereby meeting the demand for fan cooling.

[0072] In the control method of the embodiment, the method for determining whether the fan component 1 is abnormal includes: detecting the voltage value generated by the power generation module 3; if the voltage value is greater than the voltage threshold value, it is determined that the fan component 1 is not faulty; if the voltage value is less than the voltage threshold value, it is determined that the fan component 1 is faulty.

[0073] Embodiment one: self-feedback cooling fan structure

[0074] The cooling fan is internally composed of two fans, the large fan (i.e. the fan component 1 of the embodiment) is the fan that mainly cools the inverter unit, and the small fan (i.e. the power generation fan 31 of the embodiment) is the fan of the alternator.

[0075] The large fan is powered by the positive and negative power supply lines to run, and the air duct formed by the large fan drives the small fan to rotate to form an induced electromotive force which is transmitted through the positive and negative signal lines.

[0076] The four wires are drawn from the center of the motor of the two fans to prevent the fan from being wound and blocked during operation.

[0077] Example two: cooling fan start mode

[0078] The photovoltaic air conditioning system completes self-checking and power-on, detects that it meets the photovoltaic power generation conditions, the inverter unit starts to work, and the temperature bag (i.e. the temperature sensing component 6 of the embodiment) transmits the current inverter unit temperature to the MCU control chip (i.e. the control module 2 of the embodiment) in real time.

[0079] When it is detected that the temperature inside the inverter unit transmitted back by the temperature bag exceeds the set limit value, the MCU sends a high-level control signal through the resistor R1 to the gate of the transistor Q1, controls the transistor Q1 to be turned on, and then makes Vcc flow through the resistor R2, the collector and emitter of the transistor Q1, and then lights up the light-emitting diode in the optocoupler U1, so that the transistor in the optocoupler U1 is turned on, and the switching power supply flows through the resistor R3 and the optocoupler U1 to supply power to the fan component 1, so that it operates.

[0080] After the large fan in the fan structure is turned on, it forms an air duct to drive the small fan to rotate, the fan blades of the small fan drive the alternator to rotate to cut the magnetic field, generate an induced electromotive force to form an alternating voltage, and the alternating voltage is transmitted through the positive and negative signal lines to be rectified by the four diodes (D1, D2, D3, D4) to become a direct current voltage applied to the resistor R4.

[0081] The voltage across the resistor R4 is connected to the positive pole of the operational amplifier U1, and the voltage is compared with the voltage Vref at the negative pole of the operational amplifier U1 through the operational amplifier. If the voltage across the resistor R4 is greater than Vref, the output end of the operational amplifier U1 outputs a high level, which informs the MCU control chip that the fan component 1 is in a normal working state at this time. If the voltage across the resistor R4 is less than Vref, the MCU control chip is informed that the fan component 1 is in a fault stall state at this time, and the whole machine photovoltaic air conditioner needs to react to the fault.

[0082] Example three: cooling fan off mode

[0083] When it is detected that the temperature of the converter unit transmitted back by the temperature sensing bag is lower than the set limit value, the MCU sends a low level control signal to the gate of the transistor Q1 through the resistor R1, controls the transistor Q1 to be turned off, so that Vcc cannot control the optocoupler U1 to be turned on, and the switching power supply cannot supply power to the fan component 1, and the fan component 1 stops working.

[0084] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0085] Alternatively, the specific examples in the embodiments can refer to the examples described in the above-described embodiments, and the embodiments will not be described here.

[0086] The serial numbers of the above-described embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

[0087] In the above-described embodiments of the present application, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0088] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A fan structure, characterized in that, include: The fan component (1) is rotatably mounted; The control module (2) is signal-connected to the fan component (1) to send a drive signal to the fan component (1); the control module (2) sends a drive signal to the fan component (1) to drive the fan component (1) to work; A power generation module (3) is provided in correspondence with the fan component (1). When the fan component (1) rotates, the power generation module (3) generates electricity using the kinetic energy of the fan component (1) to send an electrical signal to the control module (2). The control module (2) determines whether the fan component (1) is abnormal based on the electrical signal sent by the power generation module (3). The power generation module (3) includes: a power generation fan (31), which is connected to the fan component (1); by rotating the fan component (1), the power generation fan (31) is driven to rotate, so that the power generation fan (31) drives the motor to cut the magnetic field lines, thereby generating an electrical signal; The fan component (1) and the generator fan (31) are coaxially arranged.

2. The fan structure according to claim 1, characterized in that, The fan structure includes: The bracket (4) is provided with a positioning hole (41). The drive shaft (5) is rotatably connected to the bracket (4) and is coaxially arranged with the fan component (1) and the generator fan (31); by rotating the drive shaft (5), the fan component (1) is driven to rotate.

3. The fan structure according to claim 1, characterized in that, The fan structure includes a temperature sensing component (6), which is signal-connected to the control module (2). The control module (2) transmits the drive signal to the fan component (1) based on the temperature detected by the temperature sensing component (6).

4. The fan structure according to claim 1, characterized in that, The fan structure includes: Transistor Q1, the control module (2) is connected to the transistor Q1 to send a signal to the gate of the transistor Q1; Optical coupler U1, the emitter of transistor Q1 is connected to the optical coupler U1; A switching power supply (7) is connected to the optocoupler U1; the switching power supply (7) is electrically connected to the fan component (1); The optocoupler U1 turns on or off the circuit between the switching power supply (7) and the fan component (1) according to the signal of the transistor Q1.

5. The fan structure according to claim 1, characterized in that, The fan structure includes an operational amplifier U1, which is connected to the power generation module (3); the operational amplifier U1 is connected to the control module (2); the operational amplifier U1 compares the electrical signal generated by the power generation module (3) and sends an electrical signal to the control module (2).

6. The fan structure according to claim 5, characterized in that, The fan structure includes: A rectifier module (8) is connected to the power generation module (3) to convert the AC power output by the power generation module (3) into DC power. Resistor R4 is connected to the rectifier module (8) and the positive terminal of the operational amplifier U1, so that the DC power output by the rectifier module (8) passes through resistor R4 and is input to the positive terminal of the operational amplifier U1.

7. A heat dissipation system, comprising a fan structure, characterized in that, The fan structure is the fan structure according to any one of claims 1 to 6.

8. An air conditioner, comprising a fan structure, characterized in that, The fan structure is the fan structure according to any one of claims 1 to 6.

9. A control method applicable to the fan structure according to any one of claims 1 to 6, characterized in that, The method by which the control module (2) sends a drive signal to the fan component (1) further includes: Detect the temperature of the component (10) to be cooled; When the temperature of the component to be cooled is greater than the preset temperature, the control module (2) sends a drive signal to the fan component (1) so that the fan component (1) can cool the component to be cooled; when the temperature of the component to be cooled is not greater than the preset temperature, the control module (2) does not send a drive signal to the fan component (1).

10. The control method according to claim 9, characterized in that, The methods for determining whether the fan component (1) is abnormal include: Detect the voltage value emitted by the power generation module (3); If the voltage value is greater than the voltage threshold, then it is determined that the fan component (1) has not malfunctioned; If the voltage value is less than the voltage threshold, then the fan component (1) is determined to be faulty.

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