Fan structure, cooling system, air conditioner and control method

Abstract

The invention provides a fan structure, a heat dissipation system, an air conditioner and a control method, and the fan structure comprises a fan part, a heat dissipation part and a control part, the control module is in signal connection with the fan component so as to send a driving signal to the fan component; and the power generation module is arranged corresponding to the fan component, and when the fan component rotates, the power generation module generates power by utilizing kinetic energy of the fan component so as to send an electric signal to the control module. When the fan component moves, the power generation module is driven to generate power, the control module deduces whether the fan component moves or not according to electric signals sent by the power generation module, and therefore whether the fan component works normally or not can be judged. Due to the fact that the electric energy is generated instantly, a worker can know the change of the state of the fan component at the first time, and the technical problem that abnormal conditions of the fan cannot be found in time easily is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a fan structure, a heat dissipation system, an air conditioner and a control method. Background Art

[0002] At present, the main means of heat dissipation for core heat-generating components of photovoltaic inverters and other products developed in the industry is air cooling. Common heat dissipation devices use aluminum heat sinks to close to heat-generating components, and install cooling fans next to them to build air ducts, which are blown or sucked to dissipate heat to the outside of the unit. This heat dissipation method requires the cooling fan to have high reliability.

[0003] However, most of the cooling fans used in the industry today are unable to provide feedback on their operating status at all times. When the fan motor burns out and stops, the unit cannot be notified of the situation immediately and continues to operate at the current power, causing the core heating components to continue to heat up and damage the photovoltaic inverter. This is a major safety hazard for photovoltaic inverters. Summary of the invention

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

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a fan structure is provided, comprising:

[0006] A fan component is rotatably arranged;

[0007] A control module, the control module being connected to the fan component by signal so as 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 using the kinetic energy of the fan component to send an electrical signal to the control module.

[0009] Furthermore, the power generation module comprises:

[0010] A power generation fan is connected to the fan component; the fan component is rotated to drive the power generation fan to rotate, so that the power generation fan drives the motor to cut the magnetic flux lines, thereby generating an electrical signal.

[0011] Furthermore, the fan structure comprises:

[0012] A bracket, wherein a positioning hole is provided on the bracket;

[0013] A driving shaft is rotatably connected to the bracket relative to the driving shaft, and the driving shaft is connected to both 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] Furthermore, the fan structure includes a temperature sensing component, the temperature sensing component is signal-connected to the control module, and the control module transmits the driving signal to the fan component according to the temperature detected by the temperature sensing component.

[0015] Furthermore, the fan structure comprises:

[0016] Transistor Q1, the control module is connected to the transistor Q1 to send a signal to the gate of the transistor Q1;

[0017] Optocoupler U1, the emitter of the transistor Q1 is connected to the optocoupler U1;

[0018] A switching power supply, the switching power supply is connected to the optical coupler U1; the switching power supply is electrically connected to the fan component;

[0019] The optical coupler U1 switches on or off the circuit between the switching power supply and the fan component according to the signal of the transistor Q1.

[0020] Furthermore, the fan structure includes an operational amplifier U1, which is connected to the power generation module; the operational amplifier U1 is connected to the control module; the operational amplifier U1 compares the electrical signal generated by the power generation module, thereby sending the electrical signal to the control module.

[0021] Furthermore, the fan structure comprises:

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

[0023] The resistor R4 is connected to the rectifier module, and the resistor R4 is connected to the positive electrode of the operational amplifier U1, so that the direct current output by the rectifier module passes through the resistor R4 and is input to the positive electrode of the operational amplifier U1.

[0024] A heat dissipation system comprises a fan structure, wherein the fan structure is the above-mentioned fan structure.

[0025] An air conditioner comprises a fan structure, wherein the fan structure is the above-mentioned fan structure.

[0026] A control method is applicable to the above-mentioned fan structure, 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 electrical signal sent by the power generation module.

[0029] Furthermore, the method in which the control module sends a driving signal to the fan component also includes:

[0030] Detecting the temperature of the components 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 so that the fan component cools 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] Furthermore, the method for determining whether the fan component is abnormal includes:

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

[0034] If the voltage value is greater than the voltage threshold, it is determined that the fan component has not failed;

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

[0036] Beneficial effects:

[0037] 1. The fan structure of the present invention includes: a fan component, which is rotatably arranged; a control module, which is connected to the fan component signal to send a driving signal to the fan component; a power generation module, which is arranged corresponding to the fan component, and when the fan component rotates, the power generation module uses the kinetic energy of the fan component to generate electricity to send an electrical signal to the control module. When the fan component moves, the power generation module is driven to generate electricity, and the control module infers whether the fan component moves based on the electrical signal sent by the power generation module, so as to determine whether the fan component is working normally. Since the generation of electric energy occurs instantly, the staff can understand the changes in the state of the fan component at the first time, thereby solving the technical problem that it is not easy to be discovered in time when the fan has an abnormal situation.

[0038] 1. The fan structure of the present invention can identify and obtain fault information immediately after a heat dissipation fan fails through real-time monitoring;

[0039] 2. The fault identification speed of the fan structure of the present invention is better than the method of judging by the temperature change rate;

[0040] 3. The fan structure of the present invention is conducive to the unit to respond to the cooling fan in the first time, preventing the temperature from continuing to rise and preventing damage to core components. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the circuit structure of the fan structure adopted in an embodiment of the present invention;

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

[0043] Figure 3 is a schematic structural diagram of a fan structure adopted in an embodiment of the present invention;

[0044] Figure 4 is a side view of a fan structure used in an embodiment of the present invention;

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

[0046] The above drawings include the following reference numerals:

[0047] 10. Parts to be cooled;

[0048] 1. Fan component; 2. Control module; 3. Power generation module; 31. Power generation fan; 4. Bracket; 41. Positioning hole; 5. Drive shaft; 6. Temperature sensing component; 7. Switching power supply; 8. Rectifier module. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0050] See also Figures 1 to 5 According to an embodiment of the present invention, a fan structure is provided, including: a fan component 1, which is rotatably arranged; a control module 2, which is signal-connected with the fan component 1 to send a driving signal to the fan component 1; a power generation module 3, which is arranged corresponding to the fan component 1, and when the fan component 1 rotates, the power generation module 3 uses the kinetic energy of the fan component 1 to generate electricity to send an electrical signal to the control module 2.

[0051] See also Figures 1 to 5With the above arrangement, when the fan component 1 moves, the power generation module 3 is driven to generate electricity, and the control module 2 infers whether the fan component 1 moves according to the electrical signal sent by the power generation module 3, thereby determining whether the fan component 1 is working normally. Since the generation of electrical energy occurs instantaneously, the staff can immediately understand the change in the state of the fan component 1, thereby solving the technical problem that it is not easy to detect abnormal conditions of the fan in a timely manner.

[0052] In the fan structure of this embodiment, see Figure 1 The power generation module 3 includes: a power generation fan 31, which is connected to the fan component 1; the fan component 1 rotates to drive the power generation fan 31 to rotate, so that the power generation fan 31 drives the motor to cut the magnetic flux lines, thereby generating an electrical signal.

[0053] Specifically, an AC generator motor is provided, and when the fan component 1 rotates, the generator fan 31 is driven to rotate, that is, the AC generator motor rotates, cuts the magnetic flux lines to generate induced electromotive force, and outputs an AC power generation signal. The structure is simple and easy to set up.

[0054] In the fan structure of this embodiment, see Figure 3 , Figure 4 The fan structure includes: a bracket 4, on which a positioning hole 41 is provided; a driving shaft 5, which is relatively rotatably connected to the bracket 4, and the driving shaft 5 is connected to both the fan component 1 and the power generation fan 31; by rotating the driving shaft 5, the fan component 1 and the power generation fan 31 are driven to rotate.

[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 this embodiment is a fan smaller than the fan component 1, so as to save the load of the motor driving the fan to rotate and save electric energy.

[0057] In the fan structure of this embodiment, see Figure 3 , Figure 4 The fan structure includes a temperature sensing component 6, and the temperature sensing component 6 is signal-connected to the control module 2. The control module 2 transmits the driving 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 to be dissipated 10 transmitted back by the temperature sensing component 6 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 dissipating the heat for the component to be dissipated 10; when the temperature of the component to be dissipated 10 transmitted back by the temperature sensing component 6 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 heat dissipation.

[0059] In the fan structure of this embodiment, see Figure 1 The fan structure includes: a transistor Q1, the control module 2 is connected to the transistor Q1 to send a signal to the gate of the transistor Q1; an optical coupler U1, the emitter of the transistor Q1 is connected to the optical coupler U1; a switching power supply 7, the switching power supply 7 is connected to the optical coupler U1; the switching power supply 7 is electrically connected to the fan component 1; wherein the optical coupler 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.

[0060] Specifically, when it is detected that the temperature of the converter unit transmitted back by the temperature sensing package in real time is lower than the set limit, the MCU sends a low-level control signal through the resistor R1 to the gate of the transistor Q1, controlling the transistor Q1 to turn off, so that Vcc cannot control the optocoupler U1 to turn on, and the switching power supply cannot power the fan component 1, and the fan component 1 stops working.

[0061] In the fan structure of this embodiment, see Figure 1 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, thereby sending the electrical signal to the control module 2.

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

[0063] See also Figure 1 In the fan structure of this embodiment, the fan structure includes: a rectifier module 8, which is connected to the power generation module 3 to convert the alternating current output by the power generation module 3 into direct current; a resistor R4, which is connected to the rectifier module 8, and the resistor R4 is connected to the positive electrode of the operational amplifier U1, so that the direct current output by the rectifier module 8 passes through the resistor R4 and is input into the positive electrode of the operational amplifier U1.

[0064] Specifically, 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 of 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 terminal of the operational amplifier U1 outputs a high level, informing the MCU control chip that the fan component 1 is in normal working condition 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 faulty and blocked state at this time, and the entire photovoltaic air conditioner needs to respond to the fault.

[0065] The heat dissipation system of this embodiment includes a fan structure, and the fan structure is the above-mentioned fan structure.

[0066] Specifically, the heat dissipation system of this embodiment adopts the above-mentioned fan structure. When an abnormality occurs in the fan component 1 of the heat dissipation system, it can be detected in time, thereby ensuring the heat dissipation efficiency of the heat dissipation system.

[0067] Specifically, the air conditioner of this embodiment adopts the above-mentioned fan structure. When the fan component 1 of the heat dissipation system has an abnormality, it can be detected in time, thereby ensuring the normal operation of the air conditioner.

[0068] The control method of this embodiment is applicable to the above-mentioned fan structure, and the control method includes: the control module 2 sends a driving signal to the fan component 1 to drive the fan component 1 to work; the control module 2 determines whether the fan component 1 is abnormal based on the electrical signal sent by the power generation module 3.

[0069] By adopting the above configuration, a control method for self-identification of faults of the fan component 1 is provided, and after a fault occurs in the fan component 1, the fault information can be identified and obtained immediately.

[0070] In the control method of this embodiment, see Figure 5 The method in which the control module 2 sends a driving signal to the fan component 1 also includes: 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 so that the fan component 1 cools 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 driving signal to the fan component 1.

[0071] In this way, when the temperature of the component to be cooled 10 transmitted back 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 dissipating the heat for the component to be cooled 10. When the temperature of the component to be cooled 10 transmitted back 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 this embodiment, the method for determining whether the fan component 1 is abnormal includes: detecting the voltage value emitted by the power generation module 3; if the voltage value is greater than the voltage threshold, determining that the fan component 1 is not faulty; if the voltage value is less than the voltage threshold, determining that the fan component 1 is faulty.

[0073] Embodiment 1: Self-feedback cooling fan structure

[0074] The heat dissipation fan is composed of two fans, one large and one small. The large fan (i.e., the fan component 1 of this embodiment) is mainly used to dissipate heat for the converter unit, and the small fan (i.e., the power generation fan 31 of this embodiment) is the fan for the AC generator motor.

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

[0076] Four wires are led out from the center of the motors of the two fans to prevent the fans from getting tangled in the blades and causing a stall during operation.

[0077] Example 2: Cooling fan on mode

[0078] The photovoltaic air conditioning system completes self-test and powers on, detects that the photovoltaic power generation conditions are met, the converter unit starts working, and the temperature sensing package (temperature sensing component 6 in this embodiment) transmits the current converter unit temperature to the MCU control chip (i.e., the control module 2 in this embodiment) in real time.

[0079] When it is detected that the temperature inside the converter unit transmitted back by the temperature sensing package in real time exceeds the set limit, the MCU sends a high-level control signal through the resistor R1 to the gate of the transistor Q1, controlling the transistor Q1 to turn on, so that Vcc flows through the resistor R2, the collector and emitter of the transistor Q1, and then lights up the light-emitting diode in the optocoupler U1, turning on the transistor in the optocoupler U1, and allowing the switching power to flow through the resistor R3 and the optocoupler U1 to power the fan component 1, allowing it to run.

[0080] When the large fan in the fan structure is turned on, an air duct is formed to drive the small fan to rotate. The blades of the small fan drive the AC motor to rotate and cut the magnetic field, generating an induced electromotive force to form an AC voltage. The AC voltage is transmitted through the positive and negative signal lines and then rectified by four diodes (D1, D2, D3, D4) to become a DC voltage applied to both ends of 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 of 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 terminal of the operational amplifier U1 outputs a high level, informing the MCU control chip that the fan component 1 is in normal working condition 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 faulty and blocked state at this time, and the entire photovoltaic air conditioner needs to respond to the fault.

[0082] Example 3: Cooling fan off mode

[0083] When it is detected that the temperature of the converter unit transmitted back by the temperature sensing package in real time is lower than the set limit, the MCU sends a low-level control signal through the resistor R1 to the gate of the transistor Q1, controlling the transistor Q1 to turn off, so that Vcc cannot control the optocoupler U1 to turn on, and the switching power supply cannot power 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-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, 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 "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0085] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

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

[0087] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0088] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A fan structure, characterized in that: include: A fan component (1) is rotatably arranged; A control module (2), the control module (2) being signal-connected to the fan component (1) so as to send a driving signal to the fan component (1); A power generation module (3), the power generation module (3) is arranged corresponding to the fan component (1), and when the fan component (1) rotates, the power generation module (3) uses the kinetic energy of the fan component (1) to generate electricity to send an electrical signal to the control module (2).

2. The fan structure according to claim 1, characterized in that: The power generation module (3) comprises: A power generation fan (31), the power generation fan (31) is connected to the fan component (1); the fan component (1) rotates to drive the power generation fan (31) to rotate, so that the power generation fan (31) drives the motor to cut the magnetic flux lines, thereby generating an electrical signal.

3. The fan structure according to claim 2, characterized in that: The fan structure comprises: A bracket (4), wherein a positioning hole (41) is provided on the bracket (4); A drive shaft (5), wherein the drive shaft (5) is rotatably connected to the bracket (4), and the drive shaft (5) is connected to both the fan component (1) and the power generation fan (31); by rotating the drive shaft (5), the fan component (1) and the power generation fan (31) are driven to rotate.

4. The fan structure according to claim 1, characterized in that: The fan structure comprises a temperature sensing component (6), the temperature sensing component (6) being connected to the control module (2) by signal, and the control module (2) transmitting the driving signal to the fan component (1) according to the temperature detected by the temperature sensing component (6).

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

6. The fan structure according to claim 1, characterized in that: The fan structure comprises an operational amplifier U1, wherein the operational amplifier U1 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), thereby sending the electrical signal to the control module (2).

7. The fan structure according to claim 6, characterized in that: The fan structure comprises: A rectifier module (8), the rectifier module (8) being connected to 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 to the rectifier module (8), and the resistor R4 is connected to the positive electrode of the operational amplifier U1, so that the direct current output by the rectifier module (8) passes through the resistor R4 and is input into the positive electrode of the operational amplifier U1.

8. 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 7.

9. 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 7.

10. A control method, applicable to the fan structure according to any one of claims 1 to 7, characterized in that: 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; The control module (2) determines whether the fan component (1) is abnormal based on the electrical signal sent by the power generation module (3).

11. The control method according to claim 10, characterized in that: The method in which the control module (2) sends a driving signal to the fan component (1) also includes: Detecting the temperature of the component to be cooled (10); When the temperature of the component to be cooled is greater than a preset temperature, the control module (2) sends a drive signal to the fan component (1) so that the fan component (1) dissipates heat for 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).

12. The control method according to claim 10, characterized in that: The method for determining whether the fan component (1) is abnormal comprises: Detecting the voltage value emitted by the power generation module (3); If the voltage value is greater than the voltage threshold, it is determined that the fan component (1) has not failed; If the voltage value is less than the voltage threshold, it is determined that the fan component (1) has failed.

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