CN218730290U - Energy storage inductor, power supply circuit and water boiling device - Google Patents
Energy storage inductor, power supply circuit and water boiling device Download PDFInfo
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- CN218730290U CN218730290U CN202221498609.2U CN202221498609U CN218730290U CN 218730290 U CN218730290 U CN 218730290U CN 202221498609 U CN202221498609 U CN 202221498609U CN 218730290 U CN218730290 U CN 218730290U
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Abstract
The utility model discloses an energy storage inductance, power supply circuit and device of heating up water, the energy storage inductance includes: annular magnetic core, base and around establishing the coil on annular magnetic core, annular magnetic core sets up on the base. The annular magnetic core is made of one or more of iron silicon aluminum, iron silicon, iron nickel and iron nickel molybdenum. The coil is closely wound on the annular magnetic core. The wire diameter of the coil is 0.25mm. The number of turns of the coil wound on the annular magnetic core is 89TS. The inductance range of the energy storage inductor is 450-550 muH. This application is through the annular inductance who has annular magnetic core with traditional I shape inductance replacement to shielding and absorbing the electric current noise that is in the human ear hearing frequency range, in order to avoid electric current noise to cause the interference to user's sense of hearing.
Description
Technical Field
The utility model relates to a household electrical appliances technical field especially relates to an energy storage inductance, power supply circuit and device of heating up water.
Background
The I-shaped inductor is adopted as the energy storage inductor in the current kettle product, and the current noise of the energy storage inductor in the power circuit is amplified by a larger multiplying power due to the special bell mouth base in a standby state, so that the current noise is extremely harsh and prominent and cannot be thoroughly eliminated in a quiet environment, and the hearing of a user is greatly interfered.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the energy storage inductor, the power circuit and the water boiling device are provided to solve the problem that current noise generated by the existing energy storage inductor interferes with the hearing of a user.
In order to solve the technical problem, the utility model discloses a technical scheme be:
an energy storage inductor applied to a power circuit, the energy storage inductor comprising: annular magnetic core, base and around establishing the coil on annular magnetic core, annular magnetic core sets up on the base.
Further, the annular magnetic core is made of one or more of sendust, ferrosilicon, iron nickel and iron nickel molybdenum.
Further, the coil is tightly wound on the annular magnetic core.
Further, the wire diameter of the coil is 0.25mm.
Further, the number of turns of the coil wound on the annular magnetic core is 89TS.
Furthermore, the inductance range of the energy storage inductor is 450-550 muH.
A power supply circuit comprising an energy storage inductor as claimed in any preceding claim.
Further, the power supply circuit is a non-isolated switch power supply circuit.
The water boiling device is characterized by comprising a shell and a circuit board arranged in the shell, wherein the circuit board is provided with the power circuit.
The beneficial effects of the utility model reside in that: through replacing traditional I shape inductance with the annular inductance who has annular magnetic core to shielding and absorbing the electric current noise that is in human ear hearing frequency range, in order to avoid electric current noise to cause the interference to user's hearing.
Drawings
Fig. 1 is a schematic structural diagram of an energy storage inductor adopted in a power supply circuit in the prior art;
fig. 2 is a schematic structural diagram of an energy storage inductor according to a first embodiment of the present invention;
fig. 3 is another schematic structural diagram of an energy storage inductor according to a first embodiment of the present invention;
fig. 4 is a schematic block diagram of a power circuit according to a second embodiment of the present invention;
fig. 5 is a schematic diagram of a power circuit according to a second embodiment of the present invention;
description of reference numerals:
100. an energy storage inductor; 110. an annular magnetic core; 120. a coil; 130. a base; 131. a pin; 200. a protection module; 300. a power supply chip; 400. an energy storage inductor; 500. a rectification module; 600. and an LC filtering module.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The reasons for the current noise generation are: the power supply circuit of the kettle is in idle load to meet the energy-saving standard requirement (namely the power consumption is lower than 0.5W in standby), so the output switching frequency of the power supply is adjusted down to about 3000Hz, but the power supply circuit of the existing kettle adopts an I-shaped structure selected by an energy storage inductor, please refer to FIG. 1, the output switching frequency of the power supply radiates to the external space through the I-shaped inductor, the frequency range just radiating to the external space is just in the frequency range (20 Hz-20000 Hz) of human ear hearing, the I-shaped inductor has higher self-resonant frequency and compact structure, so that the original low-frequency current noise is amplified, and after the horn mouth base structure of the kettle, the current noise is amplified again, so that sharp and harsh sound is emitted, the hearing of a user is greatly influenced, and the current noise caused by adopting the inductor cannot be completely eliminated.
Example one
Referring to fig. 2 and fig. 3, a first embodiment of the present invention is:
an energy storage inductor 100 is applied to a power circuit. The energy storage inductor 100 includes: the coil comprises a ring-shaped magnetic core 110, a base 130 and a coil 120 wound on the ring-shaped magnetic core 110, wherein the ring-shaped magnetic core 110 is arranged on the base 130. Illustratively, the height of the base 130 is 1.6mm, the overall height of the energy storage inductor 100 is 13.5mm at most, the overall width of the energy storage inductor 100 is 13.5mm at most, and the overall thickness of the energy storage inductor 100 is 10mm at most. In other embodiments, the structural size of the energy storage inductor 100 may be adjusted according to actual needs. In this embodiment, the bottom of the base 130 is provided with a pair of pins 131, wherein one pin 131 is electrically connected to the positive pole of the coil 120, and the other pin 131 is electrically connected to the negative pole of the coil 120, and is used for being soldered to a circuit board to access a power circuit; in other embodiments, pads may be employed in place of pins 131 for patch soldering to a circuit board. In this embodiment, the cross-section of the toroidal core 110 is circular, and in other embodiments, the cross-section of the toroidal core is rectangular or other shapes.
The principle of the energy storage inductor 100 of this embodiment is as follows: the energy storage inductor 100 with the annular magnetic core 110 is adopted, so that current noise in a frequency range of human hearing is shielded and absorbed by a power circuit of the kettle in a standby state.
It can be understood that, in the present embodiment, by changing the conventional energy storage inductor 100 from an i-shaped structure to an annular structure, current noise is shielded and absorbed to avoid generating sharp and harsh sound, which is beneficial to eliminating interference to the hearing of a user.
Optionally, the annular magnetic core 110 is made of one or more materials of sendust, iron nickel, and iron nickel molybdenum. In this embodiment, the annular magnetic core 110 is made of sendust, which has the characteristics of high saturation, low cost, stable performance at high temperature, and the like.
Optionally, the coil 120 is closely wound on the ring-shaped magnetic core 110. It can be understood that the coil 120 in this embodiment adopts a close-wound winding manner, which is favorable for the requirement of more turns of the coil 120. Specifically, at least the first layer of the coil 120 is wound in a close-wound manner.
Optionally, in this embodiment, the wire diameter of the coil 120 is 0.25mm. In this embodiment, in order to avoid contact between other components, the periphery of the energy storage inductor 100 is further covered by an insulating skin, and in other embodiments, a material having one or more functions of insulation, moisture protection, heat dissipation, and the like may be used to make a casing or a housing of the energy storage inductor 100, and encapsulate the energy storage inductor 100, for example, an epoxy resin is used to make the casing or the housing. The size of the wire diameter affects the current of the load at the rear end of the circuit, so the wire diameter needs to be set according to the current requirement of the load. In other embodiments, the wire diameter of the coil 120 may be adjusted according to actual requirements.
Optionally, in this embodiment, the number of turns of the coil 120 wound on the annular magnetic core 110 is 89TS. In other embodiments, the number of turns of the coil 120 may be adjusted according to actual requirements.
Optionally, in this embodiment, the inductance range of the energy storage inductor 100 is 450 to 550 μ H. In other embodiments, the inductance of the energy storage inductor 100 may be adjusted according to actual requirements. Since the inductance affects the stability of the output voltage of the circuit, in order to ensure the inductance requirement, the structural size of the annular magnetic core 110 and the structural size of the coil 120 affect the overall volume of the energy storage inductor 100, and therefore, in the practical application process, the inductance of the energy storage inductor 100 is adjusted by adjusting the structural size of the annular magnetic core, the number of turns of the coil 120, the wire diameter, and the like.
Example two
Referring to fig. 4 and 5, the present embodiment provides a power circuit, which is a non-isolated switching power circuit, and the power circuit includes the energy storage inductor 100 described above. Specifically, the power circuit further includes a protection module 200, a rectification module 400, an LC filter module 500, and a power chip 300. The protection module 200 is electrically connected to the rectifying module 400, and the protection module 200 is used for protecting the rectifying module 400. The rectifying module 400 is configured to receive an input ac power and convert the ac power into a dc power. The LC filter module 500 is electrically connected to the rectifier module 400 and the power chip 300, the power chip 300 is electrically connected to the energy storage inductor 100, the dc power output by the rectifier module 400 is filtered by the LC filter module 500 and then converted into a stable power signal by the power chip 300, and the power signal is stored in the energy storage inductor 100 and then provides electric energy to a load at the rear end of the circuit.
It can be appreciated that the present embodiment is advantageous to eliminate the interference to the user's hearing by shielding and absorbing the current noise by using the energy storage inductor 100 with the annular magnetic core 110 to avoid generating a sharp and harsh sound.
Referring to fig. 5, specifically, the protection module 200 includes a voltage dependent resistor R1, the rectification module 400 includes a diode, and the LC filter module 500 includes a first capacitor C1, a second capacitor C2, and a filter inductor L2. One end of the piezoresistor R1 is connected with a zero line, and the other end of the piezoresistor R1 is connected with a live line. The positive pole of diode connects the live wire, you of the negative pole of diode do not connect the one end of first electric capacity C1 and the one end of filter inductance L2, the other end ground connection of first electric capacity C1, the other end of filter inductance L2 connects respectively the input of power chip 300 and the one end of second electric capacity C2, the other end ground connection of second electric capacity C2. The output end of the power supply chip 300 is connected with one end of the energy storage inductor L1, and the other end of the energy storage inductor L1 is used for connecting a load at the rear end.
EXAMPLE III
The third embodiment provides a water boiling device, the water boiling device includes a housing and a circuit board disposed in the housing, the circuit board is provided with the power circuit as described in the second embodiment. Specifically, the device of heating up water of this embodiment is the kettle, the casing includes water storage container and is located the power socket of water storage container bottom, the circuit board install in the power socket. To sum up, the utility model provides a pair of energy storage inductance, power supply circuit and device of heating up water through the annular inductance who replaces traditional I shape inductance for having the annular magnetic core to shielding and absorbing the electric current noise that is in the human ear hearing frequency range, in order to avoid the electric current noise to cause the interference to user's sense of hearing.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (5)
1. An energy storage inductor applied to a power circuit, comprising: the coil winding device comprises an annular magnetic core, a base and a coil wound on the annular magnetic core, wherein the annular magnetic core is arranged on the base;
the coil is closely wound on the annular magnetic core;
the wire diameter of the coil is 0.25mm;
the number of turns of the coil wound on the annular magnetic core is 89TS;
the inductance range of the energy storage inductor is 450-550 muH.
2. The energy storage inductor of claim 1, wherein the toroidal core is a sendust core.
3. A power supply circuit comprising an energy storage inductor according to claim 1 or 2.
4. A power supply circuit as claimed in claim 3, characterized in that the power supply circuit is a non-isolated switched-mode power supply circuit.
5. A water boiling device comprising a housing and a circuit board disposed in the housing, the circuit board being provided with the power supply circuit of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221498609.2U CN218730290U (en) | 2022-06-16 | 2022-06-16 | Energy storage inductor, power supply circuit and water boiling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221498609.2U CN218730290U (en) | 2022-06-16 | 2022-06-16 | Energy storage inductor, power supply circuit and water boiling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218730290U true CN218730290U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221498609.2U Active CN218730290U (en) | 2022-06-16 | 2022-06-16 | Energy storage inductor, power supply circuit and water boiling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218730290U (en) |
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2022
- 2022-06-16 CN CN202221498609.2U patent/CN218730290U/en active Active
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