Novel vehicle fan reversing system

Abstract

The utility model relates to the technical field of vehicle fans, and discloses a novel vehicle fan reversing system which comprises a fan, and a fan driving wheel is fixedly arranged on a rotating shaft of the fan. A generator driving wheel I and a generator driving wheel II are respectively arranged on a rotating shaft of the generator; a clutch driving wheel I is arranged on an output shaft of the clutch, and a clutch driving wheel II is arranged on an input shaft of the clutch; the fan driving wheel is connected with the first generator driving wheel through a first belt, the second generator driving wheel is connected with the first clutch driving wheel through a second belt, the second clutch driving wheel is connected with the engine idle wheel through a third belt, dust is blown out of the radiator through reverse blowing of the fan, and dust accumulation can be reduced or avoided. The effect of cleaning the radiator is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive fan technology, and in particular to a novel automotive fan reversal system. Background Technology

[0002] In construction machinery, the engine cooling system is essential. It is used to properly cool the engine and keep it operating within the optimal temperature range. A malfunctioning cooling system can easily cause engine failure. When the cooling system is over-cooled, too much heat is lost, increasing fuel consumption. Fuel condensed on the cylinder walls flows into the crankcase, diluting the lubricating oil and exacerbating wear. When the cooling system is insufficient, the engine will overheat, resulting in reduced air intake, abnormal combustion, decreased engine power, poor lubrication, and accelerated wear.

[0003] Currently, engine cooling in construction machinery is generally achieved through fan-driven control, which mainly utilizes the principle of mechanical transmission, either by directly driving the engine crankshaft or by driving the cooling fan via an engine belt. In all of these methods, the engine radiator is designed as an air intake type, meaning that the rotation of the fan removes heat from the engine and its surroundings to achieve the purpose of heat dissipation.

[0004] However, when oncoming air enters the radiator, dust in the air also enters the radiator. Over time, this can cause the radiator to become clogged, affecting its heat dissipation performance. To address the problem of clogged radiators, users can only periodically remove the entire radiator and clean it, which is time-consuming and laborious. Utility Model Content

[0005] The purpose of this invention is to provide a novel automotive fan reversal system that blows dust out of the radiator by reversing the airflow of the fan, thereby reducing or preventing dust accumulation and achieving the effect of cleaning the radiator.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A novel automotive fan reversing system includes a fan with a fan drive wheel fixedly mounted on its shaft; a generator with a generator drive wheel one and a generator drive wheel two mounted on its shaft; a clutch with a clutch drive wheel one on its output shaft and a clutch drive wheel two on its input shaft; the fan drive wheel is connected to the generator drive wheel one via a belt one, the generator drive wheel two is connected to the clutch drive wheel one via a belt two, and the clutch drive wheel two is connected to an engine idler pulley via a belt three.

[0008] By adopting the above technical solution, when the vehicle is running normally, the output shaft and input shaft of the clutch are engaged. The engine's power is transmitted to the clutch drive wheel one and clutch drive wheel two via belt three. The clutch transmits power to the generator via belt two, and the generator transmits power to the fan via belt one, causing the fan to rotate normally, thereby achieving the purpose of heat dissipation. The generator converts the power transmitted by the clutch into electrical energy and stores it. When the radiator needs to be cleaned, the output shaft and input shaft of the clutch are disengaged. At this time, the engine's power is transmitted to the clutch drive wheel two via belt three but cannot be transmitted to the clutch drive wheel one, and therefore cannot be transmitted to the generator and fan. The fan will continue to rotate under the action of inertia and will be driven by belt one. The generator shaft will also continue to rotate under the action of the fan's inertia and convert into electrical energy until the fan stops and the speed of the generator shaft drops to 0. Then, the generator shaft is controlled to reverse. When the generator shaft reverses, it drives the fan to reverse through belt one. When the fan reverses, it blows air in the opposite direction to blow dust out of the radiator, which can reduce or avoid the accumulation of dust and achieve the effect of cleaning the radiator.

[0009] A further feature of this invention is that a speed sensor is provided on the shaft of the generator.

[0010] By adopting the above technical solution, the speed sensor can monitor the speed of the generator shaft in real time, so as to control the generator to reverse when the fan stops and the generator speed is 0, thus avoiding the situation where the fan and generator suddenly reverse before they have completely stopped, which would cause damage to the fan and generator, and effectively improving the service life of the equipment.

[0011] A further feature of this invention is that the clutch, generator, and speed sensor are all electrically connected to the controller.

[0012] By adopting the above technical solution, the controller is used to automatically control the engagement and disengagement between the clutch output shaft and the input shaft. After the clutch output shaft and the input shaft are disengaged, the controller controls the generator to drive the fan to reverse direction based on the speed of the generator shaft monitored by the speed sensor. Therefore, the automatic forward and reverse rotation control of the fan is realized. The control process is simple and the operation is convenient.

[0013] A further feature of this invention is that the generator is a generator with a starting function.

[0014] By adopting the above technical solution, the generator with starting function can automatically convert the electrical energy converted and stored when the fan is rotating forward back into mechanical energy, thereby driving the fan to rotate in reverse. No additional power or engine reversal is required, making the control process simpler and the equipment cost lower.

[0015] The beneficial effects of this utility model are:

[0016] 1. In normal vehicle operation, the output and input shafts of the clutch are engaged. The engine's power is transmitted to the clutch drive wheel 1 and clutch drive wheel 2 via belt 3. The clutch then transmits power to the generator via belt 2, and the generator transmits power to the fan via belt 1, causing the fan to rotate normally for heat dissipation. The generator converts the power transmitted by the clutch into electrical energy and stores it. When the radiator needs cleaning, the output and input shafts of the clutch are disengaged. At this time, the engine's power, after being transmitted to the clutch drive wheel 2 via belt 3, cannot be transmitted to the clutch drive wheel 1, and therefore cannot be transmitted to the generator and fan. The fan continues to rotate due to inertia and is driven by belt 1. The generator shaft continues to rotate due to the fan's inertia and is converted into electrical energy until the fan stops and the generator shaft speed drops to 0. Then, the generator shaft is reversed. When the generator shaft reverses, it drives the fan to reverse via belt 1. The reverse airflow blows dust out of the radiator, reducing or preventing dust accumulation and achieving the effect of cleaning the radiator.

[0017] 2. This utility model can monitor the rotational speed of the generator shaft in real time through a speed sensor, so as to control the generator to reverse when the fan stops and the generator speed is 0, thus avoiding the situation where the fan and generator suddenly reverse before they have completely stopped, which would cause damage to the fan and generator, and effectively improving the service life of the equipment.

[0018] 3. This utility model automatically controls the engagement and disengagement of the clutch output shaft and input shaft through a controller. After the clutch output shaft and input shaft are separated, the generator drives the fan to reverse direction based on the rotational speed of the generator shaft monitored by the speed sensor. Therefore, the automatic forward and reverse rotation control of the fan is realized. The control process is simple and the operation is convenient.

[0019] 4. This utility model uses a generator with a starting function to automatically convert the electrical energy converted and stored when the fan is rotating forward back into mechanical energy, thereby driving the fan to rotate in reverse. No additional power or engine reversal is required, making the control process simpler and the equipment cost lower. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a novel automotive fan reversal system according to this utility model.

[0022] In the diagram, 1. Fan; 2. Generator; 3. Generator drive wheel one; 4. Generator drive wheel two; 5. Clutch; 6. Clutch drive wheel one; 7. Clutch drive wheel two; 8. Belt one; 9. Belt two; 10. Belt three; 11. Engine idler pulley; 12. Fan drive wheel. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] like Figure 1 As shown, a novel automotive fan reversing system includes a fan 1, on which a fan drive wheel 12 is fixedly mounted; a generator 2, on which a generator drive wheel 3 and a generator drive wheel 4 are respectively mounted; a clutch 5, on which a clutch drive wheel 6 is mounted on the output shaft and a clutch drive wheel 7 is mounted on the input shaft; the fan drive wheel 12 is connected to the generator drive wheel 3 via a belt 8, the generator drive wheel 4 is connected to the clutch drive wheel 6 via a belt 9, and the clutch drive wheel 7 is connected to the engine idler pulley 11 via a belt 10.

[0025] Furthermore, a speed sensor is provided on the shaft of the generator 2.

[0026] Furthermore, the clutch 5, generator 2, and speed sensor are all electrically connected to the controller.

[0027] Furthermore, the generator 2 is a generator 2 with a starting function.

[0028] The working principle of this utility model is as follows: When the vehicle is running normally, the controller controls the output shaft and input shaft of clutch 5 to be engaged. The engine power is transmitted to clutch drive wheel 6 and clutch drive wheel 7 via belt 3 10. Clutch 5 transmits power to generator 2 via belt 2 9. Generator 2 transmits power to fan 1 via belt 1, causing fan 1 to rotate normally, thereby achieving the purpose of heat dissipation. Generator 2 converts the power transmitted by clutch 5 into electrical energy and stores it. When the radiator needs to be cleaned, the controller controls the output shaft and input shaft of clutch 5 to be disengaged. At this time, the engine power, after being transmitted to clutch drive wheel 7 via belt 3 10, cannot be further transmitted to the clutch drive wheel 7. The drive wheel 6 is blocked, preventing power from being transmitted to generator 2 and fan 1. Fan 1 continues to rotate due to inertia and is driven by belt 1. The shaft of generator 2 continues to rotate due to the inertia of fan 1 and is converted into electrical energy until fan 1 stops. The shaft speed of generator 2 drops to 0. The speed sensor monitors the shaft speed of generator 2 in real time and transmits the shaft speed information to the controller. When the controller receives the generator 2 speed as 0, it controls the generator 2 shaft to reverse. When the generator 2 shaft reverses, it drives fan 1 to reverse. When fan 1 reverses, it blows air in the opposite direction to blow dust out of the radiator, which can reduce or avoid dust accumulation and achieve the effect of cleaning the radiator.

Claims

1. A novel vehicle fan reversing system, characterized in that: The invention comprises a fan (1), wherein a fan driving wheel (12) is fixedly provided on the rotating shaft of the fan (1); a generator (2), wherein a generator driving wheel 1 (3) and a generator driving wheel 2 (4) are respectively provided on the rotating shaft of the generator (2); a clutch (5), wherein a clutch driving wheel 1 (6) is provided on the output shaft of the clutch (5), and a clutch driving wheel 2 (7) is provided on the input shaft of the clutch (5); the fan driving wheel (12) is connected to the generator driving wheel 1 (3) via a belt 1 (8), the generator driving wheel 2 (4) is connected to the clutch driving wheel 1 (6) via a belt 2 (9), and the clutch driving wheel 2 (7) is connected to the engine idler wheel (11) via a belt 3 (10).

2. According to claim 1, the novel vehicle fan reversing system is characterized by: A rotation speed sensor is provided on the rotating shaft of the generator (2).

3. A novel vehicle fan reversing system according to claim 2, characterized in that: The clutch (5), the generator (2) and the rotation speed sensor are all electrically connected to the controller.

4. The novel vehicle fan reversing system according to claim 1 is characterized in that: The generator (2) is a generator (2) with a starting function.

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