Fan structure, cooling system and air conditioner

Abstract

The utility model provides a fan structure, a heat dissipation system and an air conditioner, and the fan structure comprises a fan part which is rotatably arranged; 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 utility model relates to the technical field of fans, in particular to a fan structure, a heat dissipation system and an air conditioner. Background Art

[0002] Currently, the primary method used to dissipate heat from core heat-generating components in products such as photovoltaic inverters developed within the industry is air cooling. A common cooling device uses an aluminum heat sink placed close to the heat-generating components, with a cooling fan installed next to it. This creates an air duct that blows or draws air through the heat to dissipate heat outside the unit. This cooling method requires the cooling fan to be highly reliable.

[0003] However, most cooling fans currently used in the industry are unable to provide feedback on their operating status at all times. When the fan motor burns out and stops rotating, 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. Utility Model Content

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a fan structure, a heat dissipation system and an air conditioner to solve the technical problem in the related art that abnormal conditions of the fan are not easily 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, rotatably arranged;

[0007] a control module, the control module being signal-connected to the fan component to send a driving signal to the fan component;

[0008] A power generation module is provided 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 includes:

[0010] A power generation fan is connected to the fan component; the fan component rotates 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 includes:

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

[0013] A drive shaft is rotatably connected to the bracket relative to the drive shaft, and the drive shaft is connected to both the fan component and the power generation fan; by rotating the drive shaft, the fan component and the power generation fan are driven to rotate.

[0014] Furthermore, the diameter of the blades of the fan component is greater than the diameter of the blades of the power generation fan.

[0015] 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.

[0016] Furthermore, the fan structure includes:

[0017] Transistor Q1, the control module is connected to the transistor Q1 to send a signal to the gate of the transistor Q1;

[0018] Optocoupler U1, the emitter of the transistor Q1 is connected to the optocoupler U1;

[0019] 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;

[0020] The optocoupler U1 switches on or off the circuit between the switching power supply and the fan component according to the signal of the transistor Q1 .

[0021] 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.

[0022] Furthermore, the fan structure includes:

[0023] a rectifier module, the rectifier module being connected to the power generation module to convert the alternating current output by the power generation module into direct current;

[0024] 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 into the positive electrode of the operational amplifier U1.

[0025] A heat dissipation system includes a fan structure, wherein the fan structure is the above-mentioned fan structure.

[0026] An air conditioner comprises a fan structure, wherein the fan structure is the above-mentioned fan structure.

[0027] Beneficial effects:

[0028] 1. The fan structure of the present invention includes: a fan component, which is rotatably arranged; a control module, which is signal-connected to the fan component to send a drive signal to the fan component; and a power generation module, which is arranged corresponding to the fan component. 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. The control module infers whether the fan component is moving based on the electrical signal sent by the power generation module, thereby determining whether the fan component is operating normally. Since the generation of electrical energy occurs instantaneously, the staff can immediately understand the changes in the status of the fan component, thereby solving the technical problem that abnormal conditions in the fan are not easy to be discovered in time.

[0029] 1. The fan structure of the utility model can identify and obtain fault information immediately after a heat dissipation fan fails through real-time monitoring;

[0030] 2. The fault identification speed of the fan structure of the utility model is better than the method of judging by the temperature change rate;

[0031] 3. The fan structure of the utility model helps 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

[0032] Figure 1 This is a schematic diagram of the circuit structure of the fan structure used in the embodiment of the present utility model;

[0033] Figure 2 This is a control schematic diagram of the circuit structure of the fan structure adopted in the embodiment of the present utility model;

[0034] Figure 3 This is a schematic structural diagram of the fan structure used in the embodiment of the present utility model;

[0035] Figure 4 It is a side view of the fan structure adopted in the embodiment of the present utility model;

[0036] Figure 5 This is a working flow diagram of the fan structure provided by an embodiment of the utility model.

[0037] The above drawings include the following reference numerals:

[0038] 10. Components to be cooled;

[0039] 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

[0040] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0041] 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 to the fan component 1 to send a driving signal to the fan component 1; and a power generation module 3, which is arranged corresponding to the fan component 1. 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.

[0042] See also Figures 1 to 5 With this setup, when fan assembly 1 moves, it drives generator module 3 to generate electricity. Control module 2 infers whether fan assembly 1 is moving based on the electrical signal from generator module 3, thereby determining whether fan assembly 1 is functioning properly. Because power generation occurs instantaneously, operators are immediately aware of changes in fan assembly 1's status, resolving the technical issue of fan anomalies being difficult to detect in a timely manner.

[0043] 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.

[0044] Specifically, an AC generator motor is provided. When the fan component 1 rotates, it drives the generator fan 31 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.

[0045] In the fan structure of this embodiment, see Figure 3 、 Figure 4The fan structure includes: a bracket 4, a positioning hole 41 is provided on the bracket 4; a drive shaft 5, 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.

[0046] 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 rotation and saving electricity.

[0047] See also Figure 3 The diameter of the blades of the fan component 1 is greater than the diameter of the blades of the power generation fan 31.

[0048] Specifically, the power generation fan 31 of this embodiment is a fan smaller than the fan component 1, thereby reducing the load of the motor driving the fan to rotate and saving electric energy.

[0049] In the fan structure of this embodiment, see Figure 3 、 Figure 4 The fan structure includes a temperature sensing component 6, which 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.

[0050] Specifically, when the temperature of the component to be dissipated 10 transmitted back in real time by the temperature sensing component 6 is lower than the set limit, the control module 2 sends a driving signal to control the fan component 1 to rotate, thereby dissipating heat for the component to be dissipated 10. When the temperature of the component to be dissipated 10 transmitted back in real time by the temperature sensing component 6 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.

[0051] 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 optocoupler U1, the emitter of the transistor Q1 is connected to the optocoupler U1; a switching power supply 7, the switching power supply 7 is connected to the optocoupler U1; the switching power supply 7 is electrically connected to the fan component 1; wherein, 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.

[0052] 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.

[0053] 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 an electrical signal to the control module 2.

[0054] 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.

[0055] 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 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.

[0056] 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.

[0057] The heat dissipation system of this embodiment includes a fan structure, and the fan structure is the fan structure described above.

[0058] Specifically, the heat dissipation system 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 heat dissipation efficiency of the heat dissipation system.

[0059] Specifically, the air conditioner 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 normal operation of the air conditioner.

[0060] Example 1: Self-feedback cooling fan structure

[0061] The heat dissipation fan is composed of two fans, one large and one small. The large fan (i.e., the fan component 1 in this embodiment) is mainly used to dissipate heat from the converter unit, and the small fan (i.e., the power generation fan 31 in this embodiment) is used as the fan for the AC generator motor.

[0062] 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, generating an induced electromotive force that is transmitted through the positive and negative signal lines.

[0063] Four wires are led out from the center of the motors of the two fans to prevent them from getting tangled and blocking the fan blades during operation.

[0064] Example 2: Cooling fan on mode

[0065] The photovoltaic air conditioning system completes self-test and powers on. It 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.

[0066] When it is detected that the temperature inside the converter unit transmitted back in real time by the temperature sensing package 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 making the switching power flow through the resistor R3 and the optocoupler U1 to power the fan component 1 and make it run.

[0067] 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 resistor R4.

[0068] 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. 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, and the entire photovoltaic air conditioner needs to respond to the fault.

[0069] Example 3: Cooling fan off mode

[0070] 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.

[0071] 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 sequential order. 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 a sequence 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.

[0072] 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.

[0073] 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.

[0074] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0075] The above is only a preferred embodiment 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) to send a drive signal to the fan component (1); A power generation module (3) is provided corresponding to 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).

2. The fan structure according to claim 1, characterized in that: The power generation module (3) comprises: A 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) is rotatably connected to the bracket (4) relative to the drive shaft (5), 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 2, characterized in that: The diameter of the blades of the fan component (1) is greater than the diameter of the blades of the power generation fan (31).

5. The fan structure according to claim 1, characterized in that: The fan structure includes a temperature sensing component (6), the temperature sensing component (6) is connected to the control module (2) by signal, and the control module (2) transmits the driving signal to the fan component (1) according to the temperature detected by the temperature sensing component (6).

6. The fan structure according to claim 1, characterized in that: The fan structure comprises: Transistor Q1, the control module (2) is 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), 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.

7. The fan structure according to claim 1, characterized in that: The fan structure comprises 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).

8. The fan structure according to claim 7, 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 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.

9. 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 8.

10. 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 8.

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