CN217590519U - Energy-saving fan - Google Patents
Energy-saving fan Download PDFInfo
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- CN217590519U CN217590519U CN202221488410.1U CN202221488410U CN217590519U CN 217590519 U CN217590519 U CN 217590519U CN 202221488410 U CN202221488410 U CN 202221488410U CN 217590519 U CN217590519 U CN 217590519U
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Abstract
The utility model discloses an energy-saving fan, including the fan main part, motor and rotational speed transform subassembly, the rotational speed transform subassembly includes rotational speed transform switch and the power of being connected with rotational speed transform switch electricity, the motor has and is connected motor winding with the rotational speed transform switch, motor winding includes U phase winding group, V phase winding group and W phase winding group, U phase winding group includes U1 winding wire, U2 winding wire, U3 winding wire and U4 winding wire, V phase winding group includes V1 winding wire, V2 winding wire, V3 winding wire and V4 winding wire, W phase winding group includes W1 winding wire, W2 winding wire, W3 winding wire and W4 winding wire, wherein, the rotational speed transform switch has high-speed gear, intermediate speed gear and low-speed gear. Compared with frequency conversion speed regulation and pole change speed regulation, the speed regulation by adopting the method of changing the number of turns of the windings in series has low cost; compared with a thyristor, the voltage and speed regulating current waveform has no distortion, and the pollution to a power grid can be avoided.
Description
Technical Field
The utility model belongs to the fan field, concretely relates to energy-conserving fan.
Background
Negative pressure fans generally fall into two categories, one is a belt fan which is formed by reducing the speed of high-speed motors (2 and 4 poles) through a belt and driving fan blades by driven wheels. The other is that the motor is made into low speed (8, 10, 12 poles), and the fan blade is directly arranged on the output shaft of the motor, which is called as a direct-drive fan.
The manufacturing cost of belt formula fan is lower, but the later stage needs the periodic replacement belt, especially is difficult for changing on the factory building high position, can make the later maintenance cost higher. The direct-drive fan has higher transmission efficiency due to no belt transmission, avoids the corrosion of corrosive gas to the belt, and basically can be maintenance-free; the reliability is higher, can be applied to the occasions with corrosive gases such as electroplating chemical industry, etching and the like, and has wider application range.
Meanwhile, the requirement of the actual use place of the fan on the air volume is often changed, so that the energy consumption of the fan with the constant rotating speed is higher, and the rotating speed of the fan with the proper rotating speed is required to be selected according to different air volume requirements.
SUMMERY OF THE UTILITY MODEL
To foretell not enough, the utility model provides an energy-conserving fan realizes the regulation of fan rotational speed through the mode that changes the winding and connect.
The utility model discloses a realize through following technical scheme:
an energy-saving fan comprises a fan body, a motor and a rotating speed conversion assembly, wherein the rotating speed conversion assembly comprises a rotating speed conversion switch and a power supply electrically connected with the rotating speed conversion switch, the motor is provided with a motor winding connected with the rotating speed conversion switch, the motor winding comprises a U-phase winding group, a V-phase winding group and a W-phase winding group, the U-phase winding group comprises a U1 winding wire, a U2 winding wire, a U3 winding wire and a U4 winding wire, the V-phase winding group comprises a V1 winding wire, a V2 winding wire, a V3 winding wire and a V4 winding wire, the W-phase winding group comprises a W1 winding wire, a W2 winding wire, a W3 winding wire and a W4 winding wire, and the rotating speed conversion switch is provided with a high-speed gear, a medium-speed gear and a low-speed gear; when the rotating speed conversion switch is in a high-speed gear state, the U-phase winding group, the V-phase winding group and the W-phase winding group are in triangular connection; when the rotating speed conversion switch is in a medium-speed gear position state, the U-phase winding group, the V-phase winding group and the W-phase winding group are in star connection, the U1 winding wire and the U2 winding wire which are connected in series are connected in parallel with the U3 winding wire and the U4 winding wire which are connected in series, the V1 winding wire and the V2 winding wire which are connected in series are connected in parallel with the V3 winding wire and the V4 winding wire which are connected in series, and the W1 winding wire and the W2 winding wire which are connected in series are connected in parallel with the W3 winding wire and the W4 winding wire which are connected in series; when the rotation speed conversion switch is in a low-speed gear position, the U-phase winding group, the V-phase winding group and the W-phase winding group are connected in a star shape, the U1 winding wire, the U2 winding wire, the U3 winding wire and the U4 winding wire are connected in series, the V1 winding wire, the V2 winding wire, the V3 winding wire and the V4 winding wire are connected in series, and the W1 winding wire, the W2 winding wire, the W3 winding wire and the W4 winding wire are connected in series.
Further, the motor winding has winding leads connected to a speed change switch.
Further, the motor also comprises a sealing sleeve wrapping the winding lead.
Furthermore, the energy-saving fan also comprises a power factor compensator which is respectively connected with the rotating speed conversion switch, the U-phase winding group, the V-phase winding group and the W-phase winding group through external leads.
Furthermore, the power factor compensator comprises a shell and three capacitor plates arranged in the shell, and the external lead is arranged at the joint of two adjacent capacitor plates.
Furthermore, each capacitor plate is provided with a connecting terminal, and an external lead is connected to any one connecting terminal of the two adjacent capacitor plates.
Furthermore, the rotating speed conversion switch is provided with three outgoing lines, the number of the external leads is three, and each outgoing line is connected with one external lead.
The utility model discloses following beneficial effect has:
1. compared with frequency conversion speed regulation and pole change speed regulation, the energy-saving fan adopts a method of changing the number of turns of the series connection of the windings for speed regulation, and has lower cost; compared with a thyristor, the voltage and speed regulating current waveform has no distortion, and the pollution to a power grid can be avoided.
2. The running current of the fan motor is effectively reduced through the power factor compensator, the line loss is reduced, the electric energy is saved, and the utilization rate of power supply grid equipment is improved; meanwhile, the running cost of the fan is effectively controlled by reducing the running current, and the product is convenient to popularize and apply in a large quantity.
Drawings
Fig. 1 is a schematic structural diagram illustrating an exemplary embodiment of an energy-saving fan according to the present invention;
fig. 2 is a schematic connection diagram illustrating an exemplary embodiment of a motor winding according to the present invention;
fig. 3 is a schematic connection diagram illustrating another exemplary embodiment of a motor winding according to the present invention;
fig. 4 is a schematic connection diagram illustrating another exemplary embodiment of a motor winding according to the present invention;
fig. 5 is a schematic wiring diagram for illustrating an exemplary embodiment of the energy-saving fan according to the present invention.
Reference numerals:
1. a fan body, 2, a rotating speed conversion assembly, 21, a rotating speed conversion switch, 22, a power supply, 23, outgoing wires, 3, a motor, 31, a U winding group, 311, a U1 winding wire, 312, a U2 winding wire, 313, a U3 winding wire, 314, a U4 winding wire, 32, a V winding group, 321, a V1 winding wire, 322, V2 winding wire, 323, V3 winding wire, 324, V4 winding wire, 33, W winding group, 331, W1 winding wire, 332, W2 winding wire, 333, W3 winding wire, 334, W4 winding wire, 4, power factor compensator, 41, external lead wire, 42, capacitor plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some 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 a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
It should be noted that the terms of orientation such as left, right, up, down, front and back in the embodiments of the present invention are only relative concepts or are referred to the normal use state of the product, i.e. the traveling direction of the product, and should not be considered as limiting.
In addition, it should be noted that the dynamic terms such as "relative movement" mentioned in the embodiments of the present invention include not only a change in position but also a movement in which a state changes without a relative change in position such as rotation or rolling.
Finally, it will be understood that when an element is referred to as being "on" or "disposed of" another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
An energy-saving fan as shown in fig. 1 to 5 includes a fan main body 1, a motor 3 and a rotation speed conversion assembly 2, the rotation speed conversion assembly 2 includes a rotation speed conversion switch 21 and a power source 22 electrically connected to the rotation speed conversion switch 21, the motor 3 has a motor winding connected to the rotation speed conversion switch 21, the motor winding includes a U-phase winding group 31, a V-phase winding group 32 and a W-phase winding group 33, the U-phase winding group 31 includes a U1 winding wire 311, a U2 winding wire 312, a U3 winding wire 313 and a U4 winding wire 314, the V-phase winding group 32 includes a V1 winding wire 321, a V2 winding wire 322, a V3 winding wire 323 and a V4 winding wire 324, the W-phase winding group 33 includes a W1 winding wire 331, a W2 winding wire 332, a W3 winding wire 333 and a W4 winding wire 334, wherein the rotation speed conversion switch 21 has a high speed gear, a medium speed gear and a low speed gear; fan main part 1 department is equipped with the flabellum, it makes to correspond different gears when rotational speed change switch 21, the rotational speed of flabellum is also different, thereby realize the change of the amount of wind, rotational speed to practical application scene adjustment flabellum, wherein, this application is through rotatory rotational speed change switch 21 when realizing the speed governing, thereby change U phase winding group 31, the speed governing is realized to V phase winding group 32 and W phase winding group 33's connected mode, external voltage, frequency, the connected mode through changing the winding realizes the speed governing energy-conservation under the unchangeable condition of number of poles, the speed governing is with low costs, and the current waveform does not have the distortion, can not cause the pollution to the electric wire netting.
Specifically, since the speed is adjusted by changing the gear of the speed change switch 21, when the speed change switch 21 is in different gears, the connection mode of the corresponding windings is also changed, as shown in fig. 2, when the speed change switch 21 is in a high-speed gear state, the U-phase winding group 31, the V-phase winding group 32 and the W-phase winding group 33 are in triangular connection; as shown in fig. 3, in the state where the rotation speed conversion switch 21 is in the middle speed position, the U-phase winding group 31, the V-phase winding group 32, and the W-phase winding group 33 are connected in a star shape, and the U1 winding wire 311 and the U2 winding wire 312 connected in series are connected in parallel with the U3 winding wire 313 and the U4 winding wire 314 connected in series, the V1 winding wire 321 and the V2 winding wire 322 connected in series are connected in parallel with the V3 winding wire 323 and the V4 winding wire 324 connected in series, and the W1 winding wire 331 and the W2 winding wire 332 connected in series are connected in parallel with the W3 winding wire 333 and the W4 winding wire 334 connected in series; as shown in fig. 4, in the state where the rotation speed conversion switch 21 is in the low-speed range, the U-phase winding group 31, the V-phase winding group 32, and the W-phase winding group 33 are connected in a star shape, the U1 winding wire 311, the U2 winding wire 312, the U3 winding wire 313, and the U4 winding wire 314 are connected in series, the V1 winding wire 321, the V2 winding wire 322, the V3 winding wire 323, and the V4 winding wire 324 are connected in series, and the W1 winding wire 331, the W2 winding wire 332, the W3 winding wire 333, and the W4 winding wire 334 are connected in series.
According to the principle: n = F (M), M = Cm Φ I2 COS Ψ 2, Φ = KE × U/2.22/F/N/K.
Wherein: n is the motor speed; m is motor torque; cm-Motor Torque constant; phi, the flux per pole of the motor; i2, rotor current; COS Ψ 2 — rotor power factor; KE — voltage coefficient; u-motor winding voltage; f is the frequency; n-the number of turns of each phase of the winding in series; k-winding coefficient.
Therefore, changing the winding connection mode is to change the magnitude of N, thereby causing changes in Φ and M, and finally causing a change in the rotation speed N. As shown in fig. 2, the high speed winding has N number of turns in series per phase, while the equivalent number of turns in the medium speed connection shown in fig. 3 is 1.732 × N and the equivalent number of turns in the low speed connection shown in fig. 4 is 3.464 × N.
The motor winding is provided with winding leads connected with a rotating speed change switch 21, wherein the number of the winding leads is 12, the 12 leads are all connected with the rotating speed change switch 21, preferably, the rotating speed change switch 21 is a universal switch, and the gear can be changed by rotating a knob, so that the change of the rotating speed is realized by changing the connection mode of the winding.
Preferably, the motor further comprises a sealing sleeve wrapping the winding lead; the winding lead wire is better protected, and the danger caused by the breakage of the winding lead wire is prevented.
In the application, the energy-saving fan further comprises a power factor compensator 4, and the power factor compensator 4 is respectively connected with the rotating speed conversion switch 21, the U-phase winding group 31, the V-phase winding group 32 and the W-phase winding group 33 through external leads 41; the power factor is compensated by the power factor compensator 4, so that the current is reduced and the electric energy loss of a power supply system is reduced.
The power factor compensator 4 comprises a shell and three capacitor plates 42 arranged in the shell, wherein the three capacitor plates 42 are sequentially connected to form a closed loop, and an external lead 41 is arranged at the joint of two adjacent capacitor plates 42; wherein the junction may be a point on the connecting line of two adjacent capacitor plates 42.
Preferably, each capacitor plate 42 is provided with a terminal, and the external lead 41 is connected to any one terminal of two adjacent capacitor plates 42, that is, the connection of two adjacent capacitor plates 42 is the terminal of any one capacitor plate 42.
The rotating speed conversion switch 21 is provided with three outgoing lines 23, the number of the external leads 41 is three, and each outgoing line 23 is connected with one external lead 41; three capacitor plates 42 in the power factor compensator 4 are connected with each other, and then three external leads 41 are led out and connected with the lead 23 in the rotating speed conversion switch 21.
In the present application, the capacitance of the capacitor plate C is related to the motor power and the rated voltage by the following equation:
Q＝P*(tanα-tanβ)/(2*π*f*u 2 )
wherein, Q is the total capacity of the capacitor plate (microfarad); p-rated input power (watts) of the motor; u-motor terminal voltage (volts); α -compensated front motor power factor angle; beta-the compensated motor power factor angle; f-supply frequency (hertz).
The specific calculation process is as follows: the method comprises the steps of firstly testing on a test bed according to rated parameters of the motor to obtain a motor power factor under a rated load state and calculating a power factor angle, wherein the compensated power factor can be selected according to 0.95 and the power factor angle can be calculated. Calculating according to the formula to obtain the value of Q, and making current compensators of various specifications and models according to the value of Q for matching motors with different powers; the rotating speed of the fan is designed to be high, medium and low. The highest motor efficiency of the high-speed gear can meet the requirements of IE4 energy efficiency standard, and the middle-speed gear and the low-speed gear can adjust the rotating speed of the fan according to the working condition requirements to achieve the purpose of energy conservation.
In the implementation process of the present application, all the electrical components in the present application need to be connected to the power source adapted to the electrical components through a conducting wire, and an appropriate controller should be selected according to the actual situation to meet the control requirement, specific connection and control sequence.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (7)
1. An energy-saving fan is characterized by comprising a fan main body, a motor and a rotating speed conversion assembly, wherein the rotating speed conversion assembly comprises a rotating speed conversion switch and a power supply electrically connected with the rotating speed conversion switch, the motor is provided with a motor winding connected with the rotating speed conversion switch, the motor winding comprises a U-phase winding group, a V-phase winding group and a W-phase winding group, the U-phase winding group comprises a U1 winding wire, a U2 winding wire, a U3 winding wire and a U4 winding wire, the V-phase winding group comprises a V1 winding wire, a V2 winding wire, a V3 winding wire and a V4 winding wire, the W-phase winding group comprises a W1 winding wire, a W2 winding wire, a W3 winding wire and a W4 winding wire, and the rotating speed conversion switch is provided with a high-speed gear, a medium-speed gear and a low-speed gear;
the U-phase winding group, the V-phase winding group and the W-phase winding group are in triangular connection when the rotating speed change switch is in the high-speed gear state;
when the rotating speed conversion switch is in the medium-speed gear position, the U-phase winding group, the V-phase winding group and the W-phase winding group are star-connected, the U1 winding wire and the U2 winding wire connected in series are connected in parallel with the U3 winding wire and the U4 winding wire connected in series, the V1 winding wire and the V2 winding wire connected in series are connected in parallel with the V3 winding wire and the V4 winding wire connected in series, and the W1 winding wire and the W2 winding wire connected in series are connected in parallel with the W3 winding wire and the W4 winding wire connected in series;
when the rotation speed conversion switch is in the low speed gear position, the U-phase winding group, the V-phase winding group, and the W-phase winding group are connected in a star shape, the U1 winding wire, the U2 winding wire, the U3 winding wire, and the U4 winding wire are connected in series, the V1 winding wire, the V2 winding wire, the V3 winding wire, and the V4 winding wire are connected in series, and the W1 winding wire, the W2 winding wire, the W3 winding wire, and the W4 winding wire are connected in series.
2. The energy efficient wind turbine of claim 1 wherein the motor winding has winding leads connected to the speed change switch.
3. The energy efficient wind turbine of claim 2 wherein the motor further comprises a gland wrapping the winding leads.
4. The energy-saving fan according to claim 1, further comprising a power factor compensator connected to the rotational speed conversion switch and the U-phase winding group, the V-phase winding group, and the W-phase winding group via external leads, respectively.
5. The energy-saving fan according to claim 4, wherein the power factor compensator comprises a housing and three capacitor plates arranged in the housing, and the external lead is arranged at a joint of two adjacent capacitor plates.
6. The energy-saving fan as claimed in claim 5, wherein each capacitor plate is provided with a terminal, and the external lead is connected to any one of the terminals of two adjacent capacitor plates.
7. The energy-saving fan according to claim 4, wherein the speed change switch has three outgoing lines, the number of the external leads is three, and each outgoing line is connected with one external lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221488410.1U CN217590519U (en) | 2022-06-15 | 2022-06-15 | Energy-saving fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221488410.1U CN217590519U (en) | 2022-06-15 | 2022-06-15 | Energy-saving fan |
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| Publication Number | Publication Date |
|---|---|
| CN217590519U true CN217590519U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221488410.1U Active CN217590519U (en) | 2022-06-15 | 2022-06-15 | Energy-saving fan |
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| Country | Link |
|---|---|
| CN (1) | CN217590519U (en) |
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2022
- 2022-06-15 CN CN202221488410.1U patent/CN217590519U/en active Active
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