Capacitance switching speed regulation motor and range hood
By using a capacitor-switched speed-regulating motor, the main and auxiliary windings form a main and auxiliary magnetic field. Combined with an adjustable capacitor assembly, this solves the problem of high transformer costs in range hood speed control, achieving efficient and energy-saving motor speed regulation and reducing production costs.
Patent Information
- Application Number
- CN202520379056.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing range hoods require expensive transformers for speed control, resulting in high costs and susceptibility to copper price fluctuations, which impacts product profit margins.
A capacitor-switched speed-regulating motor is adopted, which forms a main and auxiliary magnetic field through the main winding assembly and the auxiliary winding assembly. Combined with the adjustable running capacitor assembly, the motor speed is modulated, thus avoiding the use of a transformer.
It reduces motor losses and heat, improves motor efficiency, and enables speed regulation, thus saving production costs.
Smart Images
Figure CN223859075U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of kitchen and bathroom equipment technology, and in particular to a capacitor-switched speed-regulating motor and a range hood. Background Technology
[0002] In existing range hoods, the speed control of the fan is usually achieved by using a transformer to modulate various different power supply voltages to the motor. The motor rotates at different speeds under different power supply voltages, which in turn drives the fan blades to rotate at different speeds.
[0003] However, transformers are expensive, and their main raw material is copper, so their cost is significantly affected by fluctuations in copper prices. Therefore, this undoubtedly increases the operational pressure on enterprises and affects the profit margins of their products. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a capacitor-switching speed-regulating motor and a range hood, achieving speed regulation and saving application costs.
[0005] A capacitor-switching speed-regulating motor according to a first aspect of the present invention includes a stator module and a rotor module. The stator module is energized to drive the rotor module to rotate. The stator module includes: a main winding assembly; an auxiliary winding assembly, the first end of which is connected to the first end of the auxiliary winding assembly and used to connect to a first phase of an AC power supply; and a running capacitor assembly, the capacitance of which is adjustable. The tail end of the auxiliary winding assembly is connected to the first end of the running capacitor assembly, and the first end of the main winding assembly is connected to the tail end of the running capacitor assembly and used to connect to a second phase of an AC power supply.
[0006] A capacitor-switching speed-regulating motor according to an embodiment of the present invention has at least the following beneficial effects:
[0007] This utility model relates to a capacitor-switching speed-regulating motor. During the operation of an AC motor, the main winding assembly forms a main magnetic field to drive the rotor to rotate, while the auxiliary winding assembly forms a secondary magnetic field to reduce the harmonic components of the motor current, thereby reducing losses and heat during operation and improving the magnetic flux and reluctance distribution to increase motor efficiency. In this design, a running capacitor assembly is connected between the main winding assembly and the auxiliary winding assembly, and the capacitance value of the running capacitor assembly is adjustable. When the running capacitor assembly is changed, the current flowing through the main winding assembly and the auxiliary winding assembly changes, thereby modulating the motor speed. This design can achieve speed regulation and save on the application cost of the motor.
[0008] According to some embodiments of the utility model, the operation capacitor assembly at least includes first capacitor, second capacitor and switch, the second capacitor and the switch are connected in series to constitute at least partial series branch, the first capacitor and the series branch are connected in parallel.
[0009] According to some embodiments of the utility model, the stator module at least includes first winding, second winding, third winding, first switch and second switch, the first end of first switch is connected with the first end of second switch and is used for accessing the first phase of alternating current power supply, the first end of first winding is connected with the first end of second winding and the tail end of first switch respectively, the tail end of second winding is connected with the first end of third winding and the tail end of second switch respectively, the tail end of third winding is connected with the first end of operation capacitor assembly, when first switch is closed and second switch is opened, first winding constitutes at least partial main winding assembly, second winding and third winding constitute at least partial auxiliary winding assembly, when first switch is opened and second switch is closed, first winding and second winding constitute at least partial main winding assembly, third winding constitutes at least partial auxiliary winding assembly.
[0010] According to some embodiments of the utility model, the stator module further includes fourth winding and third switch, the first end of third switch is connected with the first end of first switch and the first end of second switch respectively and is used for accessing the first phase of alternating current power supply, the first end of fourth winding is connected with the tail end of third winding and the tail end of third switch respectively, the tail end of fourth winding is connected with the first end of operation capacitor assembly, when first switch and second switch are both opened and third switch is closed, first winding, second winding and third winding constitute at least partial main winding assembly, fourth winding constitutes at least partial auxiliary winding assembly.
[0011] According to some embodiments of the utility model, capacitor switch speed regulating motor further includes control module, control module is connected with switch, first switch, second switch and third switch respectively, control module can control switch, first switch, second switch and third switch on-off respectively.
[0012] According to some embodiments of the utility model, switch, first switch, second switch and third switch are all relay switches.
[0013] According to some embodiments of the utility model, the capacitance of first capacitor and second capacitor is equal.
[0014] According to some embodiments of the present application, the first capacitor and the second capacitor have different capacitance values.
[0015] According to some embodiments of the present application, the capacitor-switching speed-regulating motor further comprises a fuse F1, and the first end of the main winding assembly is connected to the second phase of the AC power supply through the fuse F1.
[0016] According to the range hood of the second aspect of the present application, the capacitor-switching speed-regulating motor disclosed in any of the above embodiments is used.
[0017] According to the range hood of the present application, at least the following advantages are achieved:
[0018] The range hood of the present application uses the capacitor-switching speed-regulating motor disclosed in any of the above embodiments, and does not need to use a transformer to achieve speed regulation of the motor, which is convenient to use and saves production cost.
[0019] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0020] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:
[0021] Figure 1 A structural principle diagram of one of the embodiments of the capacitor-switching speed-regulating motor of the present application;
[0022] Figure 2 A circuit schematic diagram of one of the embodiments of the capacitor-switching speed-regulating motor of the present application.
[0023] REFERENCE NUMERALS
[0024] Stator module 100; main winding assembly 200; auxiliary winding assembly 300; operating capacitor assembly 400; control module 500. DETAILED DESCRIPTION
[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0026] In the description of the utility model, need understanding, if relate to the direction description, for example the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the direction or position relation indicated is based on the direction or position relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and is not the indication or the implication of the device or the element indicated must have the specific direction, constructs and operates with the specific direction, therefore can not be understood as the restriction of the utility model.
[0027] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the first, second is only used for distinguishing the technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0028] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, or integrally connected;It can be mechanically connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0029] As shown in Figure 1 、 2 According to the first aspect embodiment of the utility model, a capacitor switching speed regulation motor, including stator module 100 and rotor module, the stator module 100 is electrified to drive the rotor module rotates, wherein, the stator module 100 includes main winding assembly 200, auxiliary winding assembly 300 and running capacitor assembly 400, the first end of the main winding assembly 200 is connected with the first end of the auxiliary winding assembly 300 and is used to access the first phase of alternating current power, the capacitance of the running capacitor assembly 400 is adjustable, the tail end of the auxiliary winding assembly 300 is connected with the first end of the running capacitor assembly 400, the first end of the main winding assembly 200 is connected with the tail end of the running capacitor assembly 400 and is used to access the second phase of alternating current power.
[0030] This design employs an AC motor. In an AC motor, the stator module 100 within the housing typically includes a main winding assembly 200 and an auxiliary winding assembly 300. During the operation of the AC motor, the main winding assembly 200 generates a main magnetic field to drive the rotor to rotate, while the auxiliary winding assembly generates a secondary magnetic field to reduce the harmonic components of the motor current, thereby reducing operating losses and heat, and improving the magnetic flux and reluctance distribution to enhance motor efficiency. A running capacitor assembly 400 is also connected between the main winding assembly 200 and the auxiliary winding assembly 300. Traditionally, the running capacitor assembly 400 has a fixed capacitance value and only performs power factor compensation and current filtering to smooth the waveform and stabilize motor operation. A starting capacitor assembly can also be connected between the main winding assembly 200 and the auxiliary winding assembly 300. The starting capacitor assembly is connected in series with a speed switch. In the initial stage of startup, the speed switch is closed, and the starting capacitor assembly and the running capacitor assembly 400 are connected in parallel, increasing the capacitance and providing starting torque to help the motor start smoothly. Once the motor speed reaches a certain level, the speed switch is opened.
[0031] The capacitance of the running capacitor component 400 in this design is adjustable. When the value of the running capacitor component 400 is changed, the current flowing through the main winding component 200 and the auxiliary winding component 300 changes, thereby modulating the speed of the motor. Specifically, when the capacitance of the running capacitor component 400 is small, the motor current increases and the speed increases; when the capacitance of the running capacitor component 400 is large, the current decreases and the speed decreases. This design can achieve speed regulation and save on the application cost of the motor.
[0032] In some embodiments of this utility model, such as Figure 2 As shown, the operating capacitor assembly 400 includes at least a first capacitor, a second capacitor, and a switching switch. The second capacitor is connected in series with the switching switch to form at least a partial series branch. The first capacitor is connected in parallel with the series branch. Specifically, the first capacitor may be... Figure 2 The capacitor C1 in the middle, the second capacitor can be Figure 2 The capacitor C2 in the middle, the switching switch can be Figure 2 The switching component K1, the first capacitor and the second capacitor can be located inside the motor housing, while the switch is located outside the motor housing. The switch is connected to the second capacitor located inside the housing via a wire.
[0033] When the switch is open, the capacitance of the running capacitor assembly 400 is the same as that of the first capacitor. When the switch is closed, the first capacitor and the second capacitor are connected in parallel, and the capacitance of the running capacitor assembly 400 increases.
[0034] In some embodiments of this invention, the capacitance values of the first capacitor and the second capacitor are equal; for example, both the first capacitor and the second capacitor can be 6uF.
[0035] In some embodiments of the utility model, the first capacitor and the second capacitor are not equal in capacitance, for example, the first capacitor can be 3uF, the second capacitor can be 5uF, or the first capacitor can be 5uF, and the second capacitor can be 7uF.
[0036] In some embodiments of the utility model, the running capacitor assembly 400 can also include more third capacitors, fourth capacitors and the like in parallel with the first capacitor, and each capacitor has a corresponding switching switch connected in series, and each switching switch is closed or opened according to actual requirements to form a running capacitor assembly 400 with a suitable capacitance to modulate a suitable rotating speed.
[0037] In some embodiments of the utility model, the running capacitor assembly 400 can also select an integrated adjustable capacitor.
[0038] In some embodiments of the utility model, as shown in Figure 2 The stator module 100 at least includes a first winding, a second winding, a third winding, a first switch and a second switch, the first end of the first switch is connected with the first end of the second switch and is used for accessing the first phase of the alternating current power supply, the first end of the first winding is connected with the first end of the second winding and the tail end of the first switch respectively, the tail end of the second winding is connected with the first end of the third winding and the tail end of the second switch respectively, and the tail end of the third winding is connected with the first end of the running capacitor assembly 400; when the first switch is closed and the second switch is opened, the first winding constitutes at least part of the main winding assembly 200, and the second winding and the third winding constitute at least part of the auxiliary winding assembly 300; when the first switch is opened and the second switch is closed, the first winding and the second winding constitute at least part of the main winding assembly 200, and the third winding constitutes at least part of the auxiliary winding assembly 300.
[0039] Among them, the first winding can be Figure 2 The second winding can be Figure 2 The third winding can be Figure 2 The first switch can be Figure 2 The second switch can be Figure 2 The switching piece K3.
[0040] By switching the on-off state of the first switch and the second switch, the number of turns of the main winding assembly 200 and the auxiliary winding assembly 300 is changed, and in the case of the same input voltage, for example, 120V or 230V, the current flowing through the main winding assembly 200 and the auxiliary winding assembly 300 changes, the main magnetic field changes, thereby the rotating speed of the rotor module can also be modulated.
[0041] In some embodiments of the utility model, such as Figure 2 As shown in the figure, the stator module 100 further includes a fourth winding and a third switch, the first end of the third switch is connected with the first end of the first switch and the first end of the second switch respectively and is used for accessing the first phase of the alternating current power supply, the first end of the fourth winding is connected with the tail end of the third winding and the tail end of the third switch respectively, and the tail end of the fourth winding is connected with the first end of the running capacitor assembly 400;When the first switch and the second switch are both disconnected and the third switch is closed, the first winding, the second winding and the third winding constitute at least part of the main winding assembly 200, and the fourth winding constitutes at least part of the auxiliary winding assembly 300.
[0042] Similarly, the fourth winding can be the winding L4 of Figure 2 The third switch can be the switch piece K4 of Figure 2 By switching the on-off state of the first switch, the second switch and the third switch, the number of turns of the main winding assembly 200 and the auxiliary winding assembly 300 is changed, so that multi-gear adjustment of the motor speed is realized.
[0043] Specifically, when the switching switch and the third switch are closed and the first switch and the second switch are disconnected, the first gear speed can be formed;When the third switch is closed and the switching switch, the first switch and the second switch are disconnected, the second gear speed can be formed;When the switching switch and the second switch are closed and the first switch and the third switch are disconnected, the third gear speed can be formed;When the second switch is closed and the switching switch, the first switch and the third switch are disconnected, the fourth gear speed can be formed;When the switching switch and the first switch are closed and the second switch and the third switch are disconnected, the fifth gear speed can be formed;When the first switch is closed and the switching switch, the second switch and the third switch are disconnected, the sixth gear speed can be formed.
[0044] Specifically, the switching switch, the first switch, the second switch and the third switch are all relay switches.
[0045] In some embodiments of the utility model, the capacitor switching speed regulation motor further includes a fuse F1, the first end of the main winding assembly 200 is connected to the second phase of the alternating current power supply through the fuse F1, when the current is too large during speed regulation, the fuse F1 will be fused, thereby protecting the motor.
[0046] In some embodiments of the utility model, such as Figure 1 As shown in the figure, the capacitor switching speed regulation motor further includes a control module 500, the control module 500 is connected with the switching switch, the first switch, the second switch and the third switch respectively, and the control module 500 can control the on-off of the switching switch, the first switch, the second switch and the third switch respectively.
[0047] The control module 500 can comprise a processor such as an MCU or CPU and its associated circuitry, and selectively controls the switching switch, the first switch, the second switch and the third switch according to the control instruction input by the user.
[0048] The range hood according to the second aspect of the present application comprises the capacitor switching speed regulation motor disclosed in any of the above embodiments, and the driving shaft of the rotor module of the motor is connected with the fan blade of the range hood to drive the fan blade to rotate.
[0049] The range hood of the present application adopts the capacitor switching speed regulation motor disclosed in any of the above embodiments, and does not need to use a transformer to achieve the speed regulation of the motor, is convenient to use, and saves production cost.
[0050] The technical features of the above embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.
[0051] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A capacitor switched speed-adjustable motor, characterized by, The motor comprises a stator module and a rotor module, the stator module is energized to drive the rotor module to rotate, wherein the stator module comprises: a main winding assembly; a sub-winding assembly, a first end of the main winding assembly is connected with a first end of the sub-winding assembly and is used for connecting a first phase of an AC power supply; a running capacitor assembly, a capacitance of the running capacitor assembly is adjustable, a first end of the sub-winding assembly is connected with a first end of the running capacitor assembly, and a first end of the main winding assembly is connected with a second end of the running capacitor assembly and is used for connecting a second phase of the AC power supply.
2. A capacitor switched speed control motor as defined in claim 1 wherein, The running capacitor assembly comprises at least a first capacitor, a second capacitor and a switching switch, the second capacitor is connected with the switching switch in series to form at least a part of a series branch, and the first capacitor is connected with the series branch in parallel.
3. A capacitor switched speed control motor as defined in claim 2 wherein, The stator module comprises at least a first winding, a second winding, a third winding, a first switch and a second switch, a first end of the first switch is connected with a first end of the second switch and is used for connecting the first phase of the AC power supply, a first end of the first winding is connected with a first end of the second winding and a second end of the first switch respectively, a second end of the second winding is connected with a first end of the third winding and a second end of the second switch respectively, and a second end of the third winding is connected with a first end of the running capacitor assembly; when the first switch is closed and the second switch is opened, the first winding forms at least a part of the main winding assembly, and the second winding and the third winding form at least a part of the sub-winding assembly; when the first switch is opened and the second switch is closed, the first winding and the second winding form at least a part of the main winding assembly, and the third winding forms at least a part of the sub-winding assembly.
4. A capacitor switched speed control motor as claimed in claim 3 wherein, The stator module further comprises a fourth winding and a third switch, a first end of the third switch is connected with the first end of the first switch and the first end of the second switch respectively and is used for connecting the first phase of the AC power supply, a first end of the fourth winding is connected with a second end of the third winding and a second end of the third switch respectively, and a second end of the fourth winding is connected with the first end of the running capacitor assembly; when the first switch and the second switch are both opened and the third switch is closed, the first winding, the second winding and the third winding form at least a part of the main winding assembly, and the fourth winding forms at least a part of the sub-winding assembly.
5. A capacitor switched speed control motor as claimed in claim 4 wherein, The motor further comprises a control module, the control module is connected with the switching switch, the first switch, the second switch and the third switch respectively, and the control module can control the switching switch, the first switch, the second switch and the third switch to be turned on or turned off respectively.
6. A capacitor switched speed control motor as claimed in claim 5 wherein, The switching switch, the first switch, the second switch and the third switch are all relay switches.
7. A capacitor switched speed control motor as defined in claim 2 wherein, Capacitances of the first capacitor and the second capacitor are equal.
8. A capacitor switched speed control motor as defined in claim 2 wherein, Capacitances of the first capacitor and the second capacitor are not equal.
9. A capacitor switched speed control motor as defined in claim 1 wherein, The motor further comprises a fuse F1, a first end of the main winding assembly is connected with a second phase of the AC power supply through the fuse F1.
10. A range hood characterized by The motor comprises the capacitor-switching speed-regulating motor according to any one of claims 1 to 9.