Control circuit of multi-supply voltage fan

Abstract

The utility model relates to the technical field of multi-power-supply control, in particular to a control circuit of a multi-power-supply voltage fan, which comprises a power supply, a switch is connected to the power supply, a fan is connected to the switch, and an autotransformer is connected to the power supply; the autotransformer is provided with four windings and seven taps, the four windings comprise two 110V windings and two 10V windings, and the two ends of the autotransformer are connected with an external power supply; the switches comprise a first switch, a second switch, a third switch and a fourth switch; the draught fans comprise the first draught fan, the second draught fan, the third draught fan and the fourth draught fan. Therefore, by means of the control circuit of the multi-power-supply voltage fan, the technical problems that a needed high-power transformer is large in size, heavy in weight, large in occupied space and high in cost can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of multi-power supply control, and more specifically, to a control circuit for a multi-power supply voltage blower. Background Art

[0002] In the context of globalization, the cross-border use of power equipment is becoming increasingly common. However, due to historical development, technical standards, and geographical differences, power grid voltage standards vary across countries. For example, the standard voltage in the United States and Canada is 120V, with a frequency of 60Hz; Europe generally uses 220V-240V, with a frequency of 50Hz; China's power grid standard voltage is 220V, also with a frequency of 50Hz; Australia's standard voltage is 230V, also with a frequency of 50Hz; and South Korea uses 220V, but with the same frequency as the United States and Canada, 60Hz.

[0003] Voltage differences pose significant challenges in the application of power equipment, especially high-power devices like wind turbines. For example, a certain wind turbine is designed to operate at a voltage of 110V. Directly connecting this wind turbine to a grid with a different voltage standard would not only severely impact the equipment's normal operation but could also pose serious safety risks. Therefore, when such equipment is exported to other countries, a transformer must be used to convert the local grid voltage to the wind turbine's required operating voltage.

[0004] However, traditional solutions present numerous drawbacks. Due to the high power of wind turbines, the required high-power transformers are not only bulky and heavy, occupying a significant amount of space, but also expensive. Furthermore, high-power transformers are relatively difficult to transport and maintain, further increasing the cost of the equipment.

[0005] Existing technical solutions for wind turbines operating in multi-voltage environments have many shortcomings, especially in reducing equipment size, weight, and cost. Therefore, it is particularly important to develop a more efficient, convenient, and low-cost multi-voltage wind turbine control method. Utility Model Content

[0006] Based on the above problems, the present application proposes a control circuit for a multi-power voltage fan to solve the technical problem that the required high-power transformer is not only bulky and heavy, occupies a lot of space, but also has high cost.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A control circuit for a multi-power supply voltage fan includes a power supply, a switch connected to the power supply, a fan connected to the switch, and an autotransformer connected to the power supply; the autotransformer has four windings and seven taps, including two 110V windings and two 10V windings, and both ends of the autotransformer are connected to an external power supply;

[0009] The switches include a first switch, a second switch, a third switch and a fourth switch; the fans include a first fan, a second fan, a third fan and a fourth fan.

[0010] In a specific implementation scheme, the first fan and the second fan are connected in parallel, the third fan and the fourth fan are connected in parallel, and the seven taps are A / B / C / D / / E / F / G taps respectively.

[0011] In a specific implementation scheme, the input and output ends of the first fan and the second fan are connected to the D tap and the E tap, and the input and output ends of the third fan and the fourth fan are connected to the F tap and the G tap.

[0012] In a specific implementation manner, the fourth switch is connected to the A tap, the B tap, and the C tap.

[0013] In a specific feasible implementation scheme, the first switch connects the input ends of the first fan, the second fan, the third fan and the fourth fan; the second switch connects the output ends of the first fan, the second fan, the third fan and the fourth fan; the third switch connects the output ends of the first fan and the second fan with the input ends of the third fan and the fourth fan.

[0014] Positive effects of this utility model:

[0015] The autotransformer consists of four windings and seven taps, two for 10V and two for 110V. A single 200VA autotransformer and three switches are all that's needed to operate four 500W fans under multiple power supply voltages. This reduces the weight and size of the unit compared to a high-power transformer.

[0016] When the input voltage does not meet the fan operating voltage, the autotransformer can be used to adjust the input voltage. The autotransformer outputs two 110V voltages to connect each fan, providing each fan with appropriate operating power.

[0017] A first switch, a second switch, a third switch and a fourth switch are provided. By closing different switches, the connection mode of the power supply is changed so that the input voltages of the four fans are all the normal operating voltage of the fans, 110V.

[0018] During use, assuming that the local grid voltage is 240V, adjust the fourth switch to tap A, close the third switch, the input voltage of the four fans is 110V, and the fans work normally; assuming that the local grid voltage is 110V, adjust the fourth switch to tap C, close the first and second switches, the input voltage of the four fans is 110V, and the fans work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the circuit of the utility model;

[0021] Description of Reference Numerals

[0022] 1. Power supply; 2. First switch; 3. Second switch; 4. Third switch; 5. Fourth switch; 6. First fan; 7. Second fan; 8. Third fan; 9. Fourth fan; 10. Tap A; 11. Tap B; 12. Tap C; 13. Tap D; 14. Tap E; 15. Tap F; 16. Tap G. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] Example

[0025] like Figure 1As shown, a control circuit of a multi-power-voltage fan includes a power supply 1, a switch connected to the power supply 1, and a fan connected to the switch, wherein the fan includes a first fan 6, a second fan 7, a third fan 8, and a fourth fan 9. The power supply 1 is connected to an autotransformer. The autotransformer has four windings and seven taps, and the seven taps are A / B / C / D / / E / F / G taps 16. Through the design of the autotransformer, the control circuit can flexibly adapt to the working requirements of the fan in different voltage environments. The autotransformer has four windings and seven taps, including two 110V windings and two 10V windings. The autotransformer is connected to an external power supply 1. The two 110V windings and the two 10V windings enable the circuit to adjust the connection mode of the switch according to the voltage change of the external power supply 1, so as to ensure that the fan obtains a suitable working voltage.

[0026] The switch includes a first switch 2, a second switch 3, a third switch 4, and a fourth switch 5. The first fan 6 and the second fan 7 are connected in parallel, and the third fan 8 and the fourth fan 9 are connected in parallel. The input and output ends of the first fan 6 and the second fan 7 are connected to the D tap 13 and the E tap 14, and the input and output ends of the third fan 8 and the fourth fan 9 are connected to the F tap 15 and the G tap 16.

[0027] The fourth switch 5 is connected to the A tap 10, the B tap 11, and the C tap 12. The first switch 2 is connected to the input ends of the first fan 6, the second fan 7, the third fan 8, and the fourth fan 9. The second switch 3 is connected to the output ends of the first fan 6, the second fan 7, the third fan 8, and the fourth fan 9. The third switch 4 is connected to the output ends of the first fan 6 and the second fan 7 and the input ends of the third fan 8 and the fourth fan 9. Compared with a traditional high-power transformer, the autotransformer has a smaller size and a lighter weight. This not only reduces the size and weight of the entire machine, making the device more convenient to transport and install, but also reduces the material cost and manufacturing cost of the device. Through reasonable switch combination, the control circuit can ensure that the fan obtains a stable working voltage in different voltage environments. This improves the reliability and stability of the system and reduces device failures and damages caused by unstable voltage.

[0028] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0029] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control circuit for a multi-power supply voltage fan, characterized in that: The invention comprises a power supply (1), the power supply (1) is connected to a switch, the switch is connected to a fan, and the power supply (1) is connected to an autotransformer; the autotransformer has four windings and seven taps, including two 110V windings and two 10V windings, and both ends of the autotransformer are connected to an external power supply (1); The switches include a first switch (2), a second switch (3), a third switch (4), and a fourth switch (5); and the fans include a first fan (6), a second fan (7), a third fan (8), and a fourth fan (9).

2. The control circuit of a multi-power supply voltage blower according to claim 1, characterized in that: The first fan (6) and the second fan (7) are connected in parallel, the third fan (8) and the fourth fan (9) are connected in parallel, and the seven taps are A / B / C / D / / E / F / G taps.

3. The control circuit of a multi-power supply voltage blower according to claim 2, characterized in that: The input and output ends of the first fan (6) and the second fan (7) are connected to the D tap (13) and the E tap (14), and the input and output ends of the third fan (8) and the fourth fan (9) are connected to the F tap (15) and the G tap (16).

4. The control circuit of a multi-power supply voltage blower according to claim 2, characterized in that: The fourth switch (5) is connected to the A tap (10), the B tap (11) and the C tap (12).

5. The control circuit of a multi-power supply voltage blower according to claim 1, characterized in that: The first switch (2) is connected to the input ends of the first fan (6), the second fan (7), the third fan (8) and the fourth fan (9); the second switch (3) is connected to the output ends of the first fan (6), the second fan (7), the third fan (8) and the fourth fan (9); and the third switch (4) is connected to the output ends of the first fan (6) and the second fan (7) and the input ends of the third fan (8) and the fourth fan (9).

Images