CN212847933U - Inductance device, circuit board and air conditioner - Google Patents
Inductance device, circuit board and air conditioner Download PDFInfo
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- CN212847933U CN212847933U CN202022319680.7U CN202022319680U CN212847933U CN 212847933 U CN212847933 U CN 212847933U CN 202022319680 U CN202022319680 U CN 202022319680U CN 212847933 U CN212847933 U CN 212847933U
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Abstract
The utility model discloses an inductance device, circuit board and air conditioner. The base pillar of the inductance device is arranged to be in a circular ring shape, so that the magnetic resistance of the inductance device is reduced compared with that of a rectangular core body; the middle pillar is arranged on the inner side wall of the base pillar and protrudes towards the inner side of the base pillar, the middle pillar points to the center of the base pillar, and the length of the middle pillar is smaller than the radius of the base pillar, so that the magnetic circuit of the inductance device can be increased, the leakage inductance path of air can be shortened, and the differential mode component of a winding can be increased; in addition, the center pillar has a certain thickness, so that the center pillar can be designed as a safe isolation insulation distance when a winding is wound, an insulation plastic shell additionally added to the core body is not needed, the cost is reduced, and the processing technology is simplified.
Description
Technical Field
The utility model relates to an inductance technical field especially relates to an inductance device, circuit board and air conditioner.
Background
The inductance device is one of the common devices of the current alternating current power supply circuit, is generally made by winding a coil on a magnetic core, and can play a role in filtering circuit interference, thereby improving the working stability of the circuit. However, the performance of the conventional inductor device is reduced due to the leakage inductance phenomenon, and therefore how to reduce the performance reduction caused by the leakage inductance phenomenon is a problem to be solved.
SUMMERY OF THE UTILITY MODEL
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the utility model provides an inductance device, circuit board and air conditioner can reduce and leak the inductance volume, improves the inductance performance.
In a first aspect, an embodiment of the present invention provides an inductance device, including:
the core body comprises a base pillar and at least two middle pillars, the base pillar is in a circular ring shape, the middle pillars are arranged on the inner side wall of the base pillar and protrude towards the inner side of the base pillar, the middle pillars point to the center of the base pillar, and the length of each middle pillar is smaller than the radius of the base pillar;
and the winding is wound on the foundation column or the middle column.
The embodiment of the utility model provides a following beneficial effect has at least: the base pillar is arranged to be circular, so that the magnetic resistance is favorably reduced compared with a rectangular core body; the middle pillar is arranged on the inner side wall of the base pillar and protrudes towards the inner side of the base pillar, the middle pillar points to the center of the base pillar, and the length of the middle pillar is smaller than the radius of the base pillar, so that the magnetic circuit of the inductance device can be increased, the leakage inductance path of air can be shortened, and the differential mode component of a winding can be increased; in addition, the center pillar has a certain thickness, so that the center pillar can be designed as a safe isolation insulation distance when a winding is wound, an insulation plastic shell additionally added to the core body is not needed, the cost is reduced, and the processing technology is simplified.
In some embodiments of the present invention, the number of the center pillars is two, and two center pillars are linearly distributed and equally divide the base pillar into a first pillar and a second pillar;
the winding comprises two phase coils which are respectively and correspondingly wound on the first column body and the second column body.
In the technical scheme, the winding comprises two-phase coils and is suitable for a single-phase power circuit, the two center pillars are linearly distributed and equally divide the base pillars into the first pillar body and the second pillar body, so that the winding of the winding is more balanced, and the improvement of the performance of an inductance device is facilitated.
In some embodiments of the present invention, the number of the central pillars is three, and three central pillars are distributed in a star shape and equally divide the central pillars into a first column body, a second column body and a third column body;
the winding comprises three-phase coils which are respectively and correspondingly wound on the first cylinder, the second cylinder and the third cylinder.
In the technical scheme, the winding comprises a three-phase coil and is suitable for a three-phase neutral-line-free power circuit, the three center pillars are distributed in a star shape and equally divide the base pillars into a first pillar body, a second pillar body and a third pillar body, so that the winding of the winding is more balanced, and the improvement of the performance of an inductance device is facilitated.
In some embodiments of the present invention, the number of the central pillars is four, and four central pillars are distributed in a cross shape and equally divide the central pillars into a first pillar, a second pillar, a third pillar and a fourth pillar;
the winding comprises four-phase coils which are respectively and correspondingly wound on the first cylinder, the second cylinder, the third cylinder and the fourth cylinder.
In the technical scheme, the winding comprises four-phase coils, the winding is suitable for a three-phase neutral line power circuit, the four center pillars are distributed in a cross shape and divide the center pillars into the first pillar body, the second pillar body, the third pillar body and the fourth pillar body, winding of the winding is more balanced, and improvement of performance of an inductance device is facilitated.
In some embodiments of the present invention, the pillar and the center pillar are integrally formed.
In the technical scheme, the base column and the middle column are integrally formed, so that the production is easy.
In some embodiments of the present invention, a plurality of air gaps are provided on the center pillar.
In above-mentioned technical scheme, be provided with the multistage air gap on the center pillar, compare in setting up single section air gap, under the prerequisite that realizes same efficiency for the width of air gap is littleer, thereby can reduce the leakage inductance, reduce the eddy current loss of inductance, and can reduce the magnetic interference to the external world.
In some embodiments of the present invention, the center pillar is made of a powder core material.
In the above technical solution, because the iron powder core material itself has the uniform air gap, the uniform air gap can make the width of each air gap smaller on the premise of realizing the same effect, so that the leakage inductance can be further reduced, the eddy current loss of the inductance can be reduced, and the magnetic interference to the outside can be reduced.
In some embodiments of the present invention, the iron powder core material is one of iron powder core, sendust, high magnetic flux iron nickel or iron nickel molybdenum.
In a second aspect, an embodiment of the present invention further provides a circuit board, including the inductance device of the first aspect. Therefore, the circuit board provided by the embodiment of the utility model is beneficial to reducing the magnetic resistance relative to the rectangular core body by arranging the base pillar into a circular ring shape; by providing a center pillar that is provided on an inner sidewall of the base pillar and protrudes toward an inner side of the base pillar, a length of the center pillar is shorter than a radius of the base pillar, so that a magnetic path of the inductor can be lengthened, a leakage inductance path of air can be shortened, and a differential mode component of a winding can be increased; in addition, the center pillar has a certain thickness, so that the center pillar can be designed as a safe isolation insulation distance when a winding is wound, an insulation plastic shell additionally added to the core body is not needed, the cost is reduced, and the processing technology is simplified.
In a third aspect, the embodiment of the present invention further provides an air conditioner, including the inductance device of the first aspect. Therefore, the air conditioner provided by the embodiment of the utility model is beneficial to reducing the magnetic resistance compared with the rectangular core body by arranging the base column into the ring shape; by providing a center pillar that is provided on an inner sidewall of the base pillar and protrudes toward an inner side of the base pillar, a length of the center pillar is shorter than a radius of the base pillar, so that a magnetic path of the inductor can be lengthened, a leakage inductance path of air can be shortened, and a differential mode component of a winding can be increased; in addition, the center pillar has a certain thickness, so that the center pillar can be designed as a safe isolation insulation distance when a winding is wound, an insulation plastic shell additionally added to the core body is not needed, the cost is reduced, and the processing technology is simplified.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the technical solutions of the present invention, and are incorporated in and constitute a part of this specification, together with the embodiments of the present invention for explaining the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.
Fig. 1 is a schematic structural diagram of an inductance device provided in an embodiment of the present invention (the number of center pillars is two);
fig. 2 is a schematic structural diagram of an inductance device according to an embodiment of the present invention (the number of the center pillars is two and a plurality of segments of air gaps are provided);
fig. 3 is a schematic structural diagram of an inductance device according to an embodiment of the present invention (the number of center pillars is three);
fig. 4 is a schematic structural diagram of an inductance device according to an embodiment of the present invention (the number of the center pillars is three and a plurality of air gaps are provided);
fig. 5 is a schematic structural diagram of an inductance device according to an embodiment of the present invention (the number of center pillars is four);
fig. 6 is a schematic structural diagram of an inductor device according to an embodiment of the present invention (the number of the center pillars is four and a plurality of segments of air gaps are provided);
fig. 7 is a schematic structural diagram of an inductor device according to an embodiment of the present invention (winding is wound around a center pillar).
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It should be understood that in the description of the embodiments of the present invention, a plurality (or a plurality) is/are two or more, and more, less, more, etc. are understood as excluding the number, and more, less, more, etc. are understood as including the number. If the description of "first", "second", etc. is used for the purpose of distinguishing technical features, it is not intended to indicate or imply relative importance or to implicitly indicate the number of indicated technical features or to implicitly indicate the precedence of the indicated technical features.
Referring to fig. 1, an embodiment of the present invention provides an inductance device, including a core and a winding, where the core includes a pillar 101 and two center pillars 102, the pillar 101 is in a circular ring shape, the center pillars 102 are disposed on an inner side wall of the pillar 101 and protrude toward an inner side of the pillar 101, the center pillars 102 point to a center of the pillar 101, and a length of the center pillars 102 is smaller than a radius of the pillar 101, where the center of the pillar 101 may be a center of the pillar 101, and of course, there may be a deviation in a certain range; the windings are wound on the base post 101. Since the length of the center pillar 102 is smaller than the radius of the pillar 101, a gap is left between the ends of the two center pillars 102, thereby achieving the effect of an air gap, and improving the uniformity of the inductance of the inductor device. By arranging the base pillar 101 in a circular ring shape, the magnetic resistance is favorably reduced compared with a rectangular core body; by providing the center pillar 102, and the center pillar 102 is provided on the inner sidewall of the base pillar 101 and protrudes toward the inside of the base pillar 101, the center pillar 102 is directed toward the center of the base pillar 101 and the length of the center pillar 102 is smaller than the radius of the base pillar 101, so that it is possible to lengthen the magnetic path of the inductor, shorten the leakage inductance path of air, and increase the differential mode component of the winding; in addition, because the center pillar 102 has a certain thickness, the insulation distance can be designed as a safe insulation distance when the winding is wound, and an additional insulation plastic shell is not needed for the core body, thereby being beneficial to reducing the cost and simplifying the processing technology. It is understood that the base pillar 101 and the center pillar 102 may be integrally formed, and thus, may be easily manufactured.
It is understood that, referring to fig. 1, the two central pillars 102 are linearly arranged and equally divide the base pillar 101 into a first column 1011 and a second column 1012; the winding includes two-phase coils, and the two-phase coils are respectively wound on the first column 1011 and the second column 1012. The winding comprises two phase coils and is suitable for a single-phase power circuit, the two center pillars 102 are linearly distributed and equally divide the base pillar 101 into a first cylinder 1011 and a second cylinder 1012, so that the winding of the winding is more balanced, and the improvement of the performance of an inductance device is facilitated. Illustratively, the two-phase coil includes a first coil 103 and a second coil 104, the first coil 103 being wound on a first cylinder 1011, and the second coil 104 being wound on a second cylinder 1012. Since the first coil 103 and the second coil 104 are wound on the same base pillar 101, the first coil 103 and the second coil 104 may constitute a common mode inductor. Wherein, the first column 1011 and the second column 1012 can be integrally formed.
It can be understood that, referring to fig. 2, the center pillar 102 is provided with the multi-segment air gap 1021, and the center pillar 102 is provided with the multi-segment air gap 1021, compared with a single-segment air gap, on the premise of realizing the same effect, the width of the air gap is smaller, so that the leakage inductance can be reduced, the eddy current loss of the inductance can be reduced, and the magnetic interference to the outside can be reduced. Specifically, when the total width of the multiple air gaps 1021 is equal to the width of the single air gap, the magnetic signals in the leakage inductance can be regarded as one hemisphere, and each air gap in the multiple air gaps 1021 is regarded as the diameter of the hemisphere, so the sum of the volumes of the hemispheres corresponding to the multiple air gaps 1021 is inevitably smaller than the volume of the hemispheres corresponding to the single air gap, and the leakage inductance can be reduced.
The center pillar 102 can be made of a ferrite core material, and since the ferrite core material itself has a uniform air gap, the width of each air gap becomes smaller on the premise of realizing the same effect by the uniform air gap, so that leakage inductance can be further reduced, eddy current loss of inductance can be reduced, and magnetic interference to the outside can be reduced. Illustratively, the iron powder core material is one of iron powder core, iron silicon aluminum, high magnetic flux iron nickel or iron nickel molybdenum.
In other embodiments, the center post 102 may be made of ferrite material.
It can be understood that, referring to fig. 3, the embodiment of the present invention provides an inductance device, including a core and a winding, the core includes a base pillar 101 and three center pillars 102, the base pillar 101 is in a circular ring shape, the center pillars 102 are disposed on an inner sidewall of the base pillar 101 and protrude toward an inner side of the base pillar 101, the center pillars 102 point to a center of the base pillar 101, and a length of the center pillars 102 is smaller than a radius of the base pillar 101; the windings are wound on the base post 101. Similarly, since the length of the center pillar 102 is smaller than the radius of the pillar 101, the end portions of the three center pillars 102 will have a gap, thereby achieving the effect of an air gap, so that the uniformity of the inductance of the inductor device is improved. By arranging the base pillar 101 in a circular ring shape, the magnetic resistance is favorably reduced compared with a rectangular core body; by providing the center pillar 102, and the center pillar 102 is provided on the inner sidewall of the base pillar 101 and protrudes toward the inside of the base pillar 101, the length of the center pillar 102 is smaller than the radius of the base pillar 101, so that it is possible to lengthen the magnetic path of the inductor, shorten the leakage inductance path of air, and increase the differential mode component of the winding; in addition, because the center pillar 102 has a certain thickness, the insulation distance can be designed as a safe insulation distance when the winding is wound, and an additional insulation plastic shell is not needed for the core body, thereby being beneficial to reducing the cost and simplifying the processing technology.
It will be appreciated that, with reference to fig. 3, the three central columns 102 are arranged in a star-like configuration and divide the base 101 equally into a first column 1011, a second column 1012 and a third column 1013; the winding comprises three-phase coils which are respectively and correspondingly wound on the first cylinder 1011, the second cylinder 1012 and the third cylinder 1013. The winding comprises a three-phase coil and is suitable for a three-phase neutral-line-free power circuit, the three middle columns 102 are distributed in a star shape, and the base column 101 is equally divided into a first column 1011, a second column 1012 and a third column 1013, so that the winding of the winding is more balanced, and the improvement of the performance of an inductance device is facilitated. Illustratively, the two-phase coil includes a first coil 103, a second coil 104, and a third coil 105, the first coil 103 being wound on the first cylinder 1011, the second coil 104 being wound on the second cylinder 1012, and the third coil 105 being wound on the third cylinder 1013. Since the first coil 103, the second coil 104, and the third coil 105 are all wound on the same base pillar 101, the first coil 103, the second coil 104, and the third coil 105 may constitute a common mode inductance. The first column 1011, the second column 1012 and the third column 1013 may be integrally formed.
Similarly, referring to fig. 4, when the number of the center pillars 102 is three, the center pillars 102 are also provided with a plurality of air gaps 1021, which has a similar principle to that when the number of the center pillars 102 is two, and will not be described again.
Similarly, when the number of the center pillars 102 is three, the center pillars 102 may also be made of a ferrite core material, and the principle is similar to that when the number of the center pillars 102 is two, and will not be described again.
It can be understood that, referring to fig. 5, the embodiment of the present invention provides an inductance device, including a core and a winding, where the core includes a base pillar 101 and four center pillars 102, the base pillar 101 is in a circular ring shape, the center pillars 102 are disposed on an inner sidewall of the base pillar 101 and protrude toward an inner side of the base pillar 101, the center pillars 102 point to a center of the base pillar 101, and a length of the center pillars 102 is smaller than a radius of the base pillar 101; the windings are wound on the base post 101. Similarly, since the length of the center pillar 102 is smaller than the radius of the pillar 101, the end portions of the four center pillars 102 are spaced apart from each other to achieve the effect of an air gap, so that the inductance uniformity of the inductor device is improved. By arranging the base pillar 101 in a circular ring shape, the magnetic resistance is favorably reduced compared with a rectangular core body; by providing the center pillar 102, and the center pillar 102 is provided on the inner sidewall of the base pillar 101 and protrudes toward the inside of the base pillar 101, the length of the center pillar 102 is smaller than the radius of the base pillar 101, so that it is possible to lengthen the magnetic path of the inductor, shorten the leakage inductance path of air, and increase the differential mode component of the winding; in addition, because the center pillar 102 has a certain thickness, the insulation distance can be designed as a safe insulation distance when the winding is wound, and an additional insulation plastic shell is not needed for the core body, thereby being beneficial to reducing the cost and simplifying the processing technology.
It will be appreciated that, with reference to fig. 5, the four central columns 102 are distributed in a cross and divide the base 101 equally into a first column 1011, a second column 1012, a third column 1013 and a fourth column 1014; the winding comprises four-phase coils which are respectively and correspondingly wound on the first cylinder 1011, the second cylinder 1012, the third cylinder 1013 and the fourth cylinder 1014. The winding comprises four-phase coils and is suitable for a three-phase neutral power circuit, the four middle columns 102 are distributed in a cross shape and equally divide the base column 101 into a first column 1011, a second column 1012, a third column 1013 and a fourth column 1014, so that the winding of the winding is more balanced, and the improvement of the performance of an inductance device is facilitated. Illustratively, the two-phase coil includes a first coil 103, a second coil 104, and a third coil 105, the first coil 103 being wound on the first cylinder 1011, the second coil 104 being wound on the second cylinder 1012, the third coil 105 being wound on the third cylinder 1013, and the fourth coil 106 being wound on the fourth cylinder 1014. Since the first coil 103, the second coil 104, the third coil 105, and the fourth coil 106 are all wound on the same base pillar 101, the first coil 103, the second coil 104, the third coil 105, and the fourth coil 106 may constitute a common mode inductance. Wherein, the first column 1011, the second column 1012, the third column 1013, and the fourth column 1014 may be integrally formed.
Similarly, referring to fig. 6, when the number of the center pillars 102 is four, the plurality of air gaps 1021 are also disposed on the center pillars 102, and the principle is similar to that when the number of the center pillars 102 is two, and will not be described again.
Similarly, when the number of the center pillars 102 is four, the center pillars 102 may also be made of a ferrite core material, and the principle is similar to that when the number of the center pillars 102 is two, and will not be described again.
It is understood that the number of the center pillars 102 in the embodiment of the present invention is not limited to two, three, or four, and may be other numbers, which can be freely selected according to actual situations.
It is understood that, referring to fig. 7, the winding may also be wound around the center posts 102, and taking the number of the center posts 102 as three as an example, the differential mode component of the center posts 102 may form three power inductors, for example, a three-phase power PFC two-level power circuit or a three-phase active vienna PFC three-level power circuit may be applied as the power inductor of the front-stage input terminal. It is understood that when the number of the center pillars 102 is other, the winding may be wound on the center pillars 102 to form the power inductor, and the description thereof is omitted.
Additionally, the embodiment of the utility model provides a still provide a circuit board, including the inductance device in the above-mentioned embodiment. Therefore, the circuit board of the embodiment of the present invention is advantageous to reduce the magnetic resistance compared to a rectangular core by setting the base pillar 101 to be circular; by providing the center pillar 102, and the center pillar 102 is provided on the inner sidewall of the base pillar 101 and protrudes toward the inside of the base pillar 101, the length of the center pillar 102 is smaller than the radius of the base pillar 101, so that it is possible to lengthen the magnetic path of the inductor, shorten the leakage inductance path of air, and increase the differential mode component of the winding; in addition, because the center pillar 102 has a certain thickness, the insulation distance can be designed as a safe insulation distance when the winding is wound, and an additional insulation plastic shell is not needed for the core body, thereby being beneficial to reducing the cost and simplifying the processing technology.
In addition, the embodiment of the utility model provides a still provide an air conditioner, including the inductance device in the above-mentioned embodiment. Therefore, the air conditioner provided by the embodiment of the present invention is beneficial to reducing the magnetic resistance compared with the rectangular core body by setting the base pillar 101 to be circular; by providing the center pillar 102, and the center pillar 102 is provided on the inner sidewall of the base pillar 101 and protrudes toward the inside of the base pillar 101, the length of the center pillar 102 is smaller than the radius of the base pillar 101, so that it is possible to lengthen the magnetic path of the inductor, shorten the leakage inductance path of air, and increase the differential mode component of the winding; in addition, because the center pillar 102 has a certain thickness, the insulation distance can be designed as a safe insulation distance when the winding is wound, and an additional insulation plastic shell is not needed for the core body, thereby being beneficial to reducing the cost and simplifying the processing technology.
It should also be appreciated that the various embodiments provided by the embodiments of the present invention can be combined arbitrarily to achieve different technical effects.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. An inductive device, comprising:
the core body comprises a base pillar and at least two middle pillars, the base pillar is in a circular ring shape, the middle pillars are arranged on the inner side wall of the base pillar and protrude towards the inner side of the base pillar, the middle pillars point to the center of the base pillar, and the length of each middle pillar is smaller than the radius of the base pillar;
and the winding is wound on the foundation column or the middle column.
2. The inductive device of claim 1, wherein:
the number of the middle columns is two, the two middle columns are linearly distributed and equally divide the foundation column into a first column body and a second column body;
the winding comprises two phase coils which are respectively and correspondingly wound on the first column body and the second column body.
3. The inductive device of claim 1, wherein:
the number of the central columns is three, the three central columns are distributed in a star shape and divide the base column into a first column body, a second column body and a third column body in equal parts;
the winding comprises three-phase coils which are respectively and correspondingly wound on the first cylinder, the second cylinder and the third cylinder.
4. The inductive device of claim 1, wherein:
the number of the central columns is four, the four central columns are distributed in a cross shape and divide the base column into a first column body, a second column body, a third column body and a fourth column body in equal parts;
the winding comprises four-phase coils which are respectively and correspondingly wound on the first cylinder, the second cylinder, the third cylinder and the fourth cylinder.
5. An inductive device according to any one of claims 1 to 4, characterized in that:
the base pillar and the center pillar are integrally formed.
6. The inductive device of claim 1, wherein:
a plurality of sections of air gaps are arranged on the middle column.
7. The inductive device of claim 1, wherein:
the center post is made of iron powder core materials.
8. The inductive device of claim 7, wherein: the iron powder core material is one of an iron powder core, iron silicon aluminum, high magnetic flux iron nickel or iron nickel molybdenum.
9. A circuit board, characterized by: an inductive device comprising any one of claims 1 to 8.
10. An air conditioner, characterized in that: an inductive device comprising any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022319680.7U CN212847933U (en) | 2020-10-16 | 2020-10-16 | Inductance device, circuit board and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022319680.7U CN212847933U (en) | 2020-10-16 | 2020-10-16 | Inductance device, circuit board and air conditioner |
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| Publication Number | Publication Date |
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| CN212847933U true CN212847933U (en) | 2021-03-30 |
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| CN202022319680.7U Active CN212847933U (en) | 2020-10-16 | 2020-10-16 | Inductance device, circuit board and air conditioner |
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