CN215578129U - Inductor and air conditioner - Google Patents

Abstract

The application discloses inductance and air conditioner belongs to electrical equipment's technical field. The inductor comprises a magnetic core and a coil group, the magnetic core is annular, the edge of at least part of the section of the magnetic core in the circumferential direction of the magnetic core is formed by connecting and enclosing an arc edge and at least one straight line edge, and the coil group is wound on the magnetic core. In the inductance that this application provided, the magnetic core encloses through connecting on its circumference at least partial cross-section's border with at least one straight line limit on the limit, and the arc limit makes the cambered surface have on the outer wall of magnetic core to make coil assembly laminate in the magnetic core. The straight line limit makes and has the platform face on the outer wall of magnetic core to reach the purpose of fixing clip wiring coil group, make coil group can remain stable after establishing on the magnetic core. The magnetic core has relatively great sectional area for the winding coil group of establishing on the magnetic core is the biggest relatively at the ascending sectional area of magnetic core circumference, can promote the inductance value of this application inductance like this, and reduces the weight of this application inductance and the effect of preparation cost.

Description

Inductor and air conditioner

Technical Field

The application belongs to the technical field of electrical equipment, especially relates to an inductance and air conditioner.

Background

The inductor is an element capable of converting electric energy into magnetic energy to be stored, the inductor comprises a magnetic core and a coil group arranged by winding the magnetic core, and the inductance of the inductor is related to the sectional area of the magnetic core and the number of turns of the coil.

In the related art, in order to increase the inductance of the inductor, the sectional area of the core may be increased, but this increases the volume of the inductor.

SUMMERY OF THE UTILITY MODEL

The inductor with the balanced performance aims to solve the technical problem that the size and the performance of the existing inductor cannot be balanced at least to a certain extent. Therefore, the application provides an inductor and an air conditioner.

An inductor provided in an embodiment of the present application includes:

the magnetic core is annular, and the edge of at least part of the cross section of the magnetic core in the circumferential direction of the magnetic core is formed by connecting an arc edge and at least one straight edge; and

and the coil group is wound on the magnetic core.

In the inductance that this application embodiment provided, because the magnetic core encloses through connecting on its circumference at least partial cross section's border with at least one straight line limit on the limit, the arc limit makes to have the cambered surface on the outer wall of magnetic core to make coil group laminate in the magnetic core. In addition, the straight line limit makes and has the terrace surface on the outer wall of magnetic core to reach the purpose of fixed card wiring coil group, make the coil group can remain stable after establishing on the magnetic core. Connect through straight line limit and pitch arc limit and enclose into the magnetic core at its ascending cross-section in circumference, can make the magnetic core have relatively great sectional area, corresponding for the coil assembly around establishing on the magnetic core is the biggest relatively at the ascending sectional area in magnetic core circumference, can promote the inductance value of this application inductance like this. And can also reduce the number of turns of coil assembly, reach the effect that reduces the weight and the preparation cost of this application inductance.

In some embodiments, the straight edge is located on an outer wall of the core on a side of the core facing away from a center of the core.

The straight line limit sets up the center that makes the outer wall center department of magnetic core have the platform at the center of magnetic core outer wall, can be convenient for fix the magnetic core and place on automatic production line like this to winding device is automatic to be twined the coil group and is established on the magnetic core, with the preparation efficiency who promotes the inductance.

In some embodiments, the number of the straight line edges is two, two of the straight line edges are arranged oppositely, and both ends of the two straight line edges are connected with the arc line edges.

Two straight line limit are relative setting for relative both ends on the coil assembly can contact with two straight line limits respectively, thereby make the stability of coil assembly better.

In some embodiments, the straight edge and the curved edge have a transition therebetween.

The outer wall of the magnetic core can be prevented from wearing the coil assembly through the arrangement of the transition section, and the purpose of protecting the coil assembly is achieved.

In some embodiments, the transition is at least one of a slope, an arc, a multi-segment slope, and a multi-segment arc.

In some embodiments, the magnetic core has a winding section and a fixed section in a circumferential direction of the magnetic core, and the coil assembly is wound around the winding section.

The fixing of the magnetic core to the other components is facilitated by the provision of the fixing segments.

In some embodiments, the inductor further includes a base, and the fixing section is disposed on the base to fix the magnetic core to the base.

The base provides the installation basis for the magnetic core can remain stable, avoids the magnetic core to empty.

In some embodiments, the coil assembly includes a plurality of coils, two coils near two ends of the fixed section are respectively provided with a first electrical connection end and a second electrical connection end, and a distance between the first electrical connection end and the second electrical connection end is not less than 8 mm.

In some embodiments, the first electrical connection end and the second electrical connection end are spaced apart by 8mm to 10 mm.

In a second aspect, the present application further provides an air conditioner including the inductor.

The inductor can be applied to a PFC circuit of an air conditioner to correct the power factor of the air conditioner.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of an inductor disclosed in an embodiment of the present application;

fig. 2 shows a schematic front view of a magnetic core of an inductor according to an embodiment of the present application;

FIG. 3 shows a schematic cross-sectional view of K-K in FIG. 2;

fig. 4 shows a schematic top view of a magnetic core of an inductor according to an embodiment of the present application;

FIG. 5 is a diagram illustrating a disturbance power test performed by an inductor in the related art;

FIG. 6 is a schematic diagram illustrating a disturbance power test performed by an inductor according to an embodiment of the disclosure;

FIG. 7 is a diagram illustrating a disturbance voltage test performed by an inductor in the related art;

fig. 8 shows a schematic diagram of a disturbance voltage test performed by the inductor disclosed in the embodiment of the present application.

Reference numerals:

100-core, 110-winding segment, 111-arc edge, 112-straight edge, 120-fixed segment,

200-coil set, 210-coil, 230-first electrical connection, 240-second electrical connection,

300-base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

example one

Referring to fig. 1 to 4, an embodiment of the present application discloses an inductor, which includes a magnetic core 100 and a coil assembly 200. The inductor can be applied to a PFC circuit of air conditioning equipment to correct the power factor of the air conditioner.

The inductance element is an energy storage element, and the original model of the inductance element is that a lead is wound into a cylindrical coil. When a current i is passed through the coil, a magnetic flux Φ is generated in the coil and energy is stored.

The magnetic core 100 above is a basic component of an inductor, and the magnetic core 100 may provide a mounting base for at least some other components of the inductor, and the magnetic core 100 has a magnetic force. The coil assembly 200 is a conductive member, and the coil assembly 200 is wound on the magnetic core 100.

The magnetic core 100 is an annular structure, such that the magnetic core 100 is an axial hollow structure, so that the coil assembly 200 can be sleeved on the magnetic core 100. The magnetic core 100 has a cross section in its circumferential direction. Specifically, the above-described cross section may be formed by cutting the magnetic core 100 along the radial direction of the magnetic core 100. At least part of the edges of the cross-section are enclosed by a curved edge 111 and at least one straight edge 112. Specifically, the arc side 111 of the cross section makes the cross section be circular-like, and the coil assembly 200 is wound on the magnetic core 100 and can be in contact with the arc side 111, so that the coil assembly 200 can be wound on the magnetic core 100 conveniently, and the coil assembly 200 can be attached to the magnetic core 100 more well. This can increase the area of the cross section of the magnetic core 100 in the circumferential direction thereof.

In the PFC circuit, according to an empirical formula, the inductance of the inductor is (K × μ 0 × μ S × N2 × S)/L, where μ 0 is a vacuum permeability, specifically 4 × 10-7; μ s is the relative permeability of the magnetic core 100; n2 is the square of the number of turns of the coil assembly 200, and S is the sectional area formed by the coil assembly 200 sleeved on the magnetic core 100; l is the length of coil assembly 200; k is the ratio of the radius R of the coil assembly 200 to the length I of the coil assembly 200. Therefore, it is known from the above experience that the larger the area of the cross section of the magnetic core 100 in the circumferential direction thereof, the larger the cross section of the coil assembly 200 fitted around the magnetic core 100 in the circumferential direction of the magnetic core 100, and therefore, the larger the area of the cross section of the magnetic core 100 in the circumferential direction thereof, the larger the inductance of the inductor.

In the related art, in order to increase the sectional area of the coil assembly 200 in the circumferential direction of the magnetic core 100, the magnetic core 100 having a hexagonal or octagonal cross section is used. The magnetic core 100 of the present application has a cross section in the circumferential direction thereof provided with arc edges 111 having a larger cross-sectional area than the hexagonal or octagonal structure of the related art.

The larger the sectional area of the magnetic core 100 in the circumferential direction is, the larger the sectional area of the coil assembly 200 in the circumferential direction of the magnetic core 100 is, when the inductance of the inductor is required to be fixed by the PFC circuit, the larger the sectional area of the coil assembly 200 in the circumferential direction of the magnetic core 100 is, and correspondingly, the fewer the number of turns of the coil assembly 200 can be set, so that the use amount of the coil assembly 200 for a wire can be reduced, and the purpose of reducing the weight and the cost of the inductor is achieved.

The straight edge 112 of the cross section of the magnetic core 100 in the circumferential direction of the present application can serve the purpose of positioning the magnetic core 100, which can facilitate the winding of the coil assembly 200 on the magnetic core 100. In particular, the inductor can be processed by automated manufacturing lines. The coil assembly 200 can be wound on the magnetic core 100 by a winding machine, thereby greatly improving the efficiency of manufacturing the inductor of the present application. Meanwhile, the straight edge 112 can also be used for clamping the coil assembly 200, so that the stability of the coil assembly 200 wound on the magnetic core 100 is better.

In the inductor provided by the embodiment of the present application, the edge of at least a part of the cross section of the magnetic core 100 in the circumferential direction thereof is connected and enclosed by the arc edge 111 and the at least one straight edge 112, and the arc edge 111 makes the outer wall of the magnetic core 100 have an arc surface, so that the coil assembly 200 is attached to the magnetic core 100. The straight edge 112 makes the outer wall of the magnetic core 100 have a flat surface, so as to achieve the purpose of fixing the wire coil assembly 200, and the coil assembly 200 can be stably wound on the magnetic core 100. The straight line edge 112 and the arc line edge 111 are connected to form a cross section of the magnetic core 100 in the circumferential direction, so that the magnetic core 100 has a relatively large cross section, and accordingly, the cross section of the coil assembly 200 wound on the magnetic core 100 in the circumferential direction of the magnetic core 100 is relatively largest, and thus the inductance of the inductor can be improved. And can also reduce coil assembly 200's number of turns, reach the effect that reduces the weight and the preparation cost of this application inductance.

In some embodiments, the above straight edge 112 may be disposed on an outer wall of the magnetic core 100, such that the straight edge 112 may be easily viewed. In particular, the straight edge 112 may be arranged on the outer wall of the magnetic core 100 on a side facing away from the center of the magnetic core 100, and correspondingly, the straight edge 112 is also located at the center of the outer wall of the magnetic core 100. This makes the shape of the magnetic core 100 more regular, which is beneficial to mass production of the magnetic core 100, and also facilitates winding the coil assembly 200 around the magnetic core 100. The straight edge 112 located at the center of the outer wall of the magnetic core 100 may also enable the outer wall of the magnetic core 100 to have a platform at the center, which may facilitate the magnetic core 100 to be vertically disposed on an automatic production line, so that the magnetic core 100 may be always stable during the process of winding the coil assembly 200 around the magnetic core 100.

In some embodiments, the plurality of straight edges 112 may be provided to facilitate the assembly process of the inductor by more conveniently winding the coil assembly 200 around the magnetic core 100. Specifically, the number of the straight sides 112 may be two, and the two straight sides 112 are disposed opposite to each other, so that the two opposite sides of the coil assembly 200 wound on the magnetic core 100 are respectively engaged with the two straight sides 112, thereby improving the stability of the coil assembly 200 wound on the magnetic core 100.

Of course, the number of the straight edges 112 may also be two or more, the straight edges 112 may be uniformly distributed on the circumference of the cross section of the magnetic core 100, and one of the straight edges 112 should be disposed on a side of the magnetic core 100 away from the center thereof, so that the stability of the coil assembly 200 is better, and the coil assembly 200 is also conveniently wound on the magnetic core 100 through a winding device.

In some embodiments, in order to prevent the outer wall of the magnetic core 100 from wearing the coil assembly 200, a transition section may be provided between the straight edge 112 and the arc edge 111 of the cross section of the magnetic core 100 in the circumferential direction, and the transition section may be provided to avoid the sharp junction of the straight edge 112 and the arc edge 111 from damaging the coil assembly 200. Specifically, the transition section may be a chamfered transition disposed between the arc edge 111 and the straight edge 112, and the transition section may adopt at least one of a slope, an arc surface, multiple segments of slopes, or multiple segments of arc surfaces.

In some embodiments, the inductor of the present application further includes a base 300, and the base 300 may provide a mounting base for at least some other components of the inductor, and specifically, the magnetic core 100 may be fixedly disposed on the base 300, so that the inductor may be stable. Specifically, the magnetic core 100 further has a winding segment 110 and a fixing segment 120, and the winding segment 110 and the fixing segment 120 are distributed along the circumferential direction of the magnetic core 100, wherein the winding segment 110 is used for arranging a coil set 200, and the coil set 200 can be wound on the winding segment 110. The fixing section 120 and the coil assembly 200 are disposed in a staggered manner, the coil assembly 200 is not disposed on the fixing section 120, and the fixing section 120 may be disposed on the base 300 and fixedly connected with the base 300, so that the magnetic core 100 may be fixedly connected with the base 300.

In some embodiments, the coil assembly 200 includes a plurality of coils 210, and two coils 210 of the plurality of coils 210 near two ends of the fixing section 120 have a first electrical connection end 230 and a second electrical connection end 240, respectively. Specifically, the plurality of coils 210 of the coil assembly 200 may be formed by bending one conductive wire a plurality of times to form the plurality of coils 210, the first and second electrical connection terminals 230 and 240 being opposite ends of the conductive wire, and a distance between the first and second electrical connection terminals 230 and 240 should be set to not less than 8 mm. Specifically, it may be 8mm to 10 mm.

Specifically, after the inductor of the present application passes the EMC test, the disturbance voltage and disturbance attack of the inductor of the present application can be measured. Referring to fig. 5 and 6, fig. 5 is a schematic diagram of an inductance test in the related art, and fig. 6 is a schematic diagram of an inductance test in the present application, it can be seen that peak values and average values of disturbance power of the inductance of the present application at various frequencies are reduced compared with those of the inductance in the related art, and the reduction effect is more obvious particularly at high frequencies.

Referring to fig. 7 and 8, fig. 5 is a schematic diagram of an inductance test in the related art, and fig. 6 is a schematic diagram of an inductance test in the present application, it can be seen that the peak value and the average value of the disturbance voltage of the inductance of the present application at each frequency are reduced compared with the inductance in the related art, and the reduction effect is more obvious particularly at high frequencies.

Therefore, the disturbance voltage and disturbance power of the inductor can be effectively reduced by setting the distance between the first electrical connection end 230 and the second electrical connection end 240 to be 8mm-10mm, so that the inductor has better stability and reliability.

Based on the inductor, the application also provides an air conditioner, which comprises the inductor, and the inductor can be applied to a PFC circuit of the air conditioner to correct the power factor of the air conditioner.

The inductor can also be applied to other electronic equipment and household electrical appliances, and particularly can also be applied to equipment such as refrigerators, refrigerating machines and the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Claims (10)

1. An inductor, comprising:

the magnetic core (100), the magnetic core (100) is ring-shaped, and the edges of at least part of the cross section of the magnetic core (100) in the circumferential direction of the magnetic core (100) are formed by connecting an arc edge (111) and at least one straight edge (112) in a surrounding way; and

the coil assembly (200) is wound on the magnetic core (100).

2. An inductor according to claim 1, characterized in that said straight edge (112) is located on an outer wall of said core (100) on a side facing away from a center of said core (100).

3. An inductor according to claim 1 or 2, characterized in that the number of the straight sides (112) is two, two straight sides (112) are oppositely arranged, and both ends of two straight sides (112) are connected with the arc sides (111).

4. An inductor according to claim 3, characterized in that there is a transition between the straight side (112) and the curved side (111).

5. The inductor of claim 4, wherein the transition section is at least one of a bevel, a camber, a multi-segment bevel, and a multi-segment camber.

6. An inductor according to claim 1, characterized in that the magnetic core (100) has a winding section (110) and a fixed section (120) in the circumferential direction of the magnetic core (100), and the coil assembly (200) is wound around the winding section (110).

7. An inductor according to claim 6, wherein the coil assembly (200) comprises a plurality of coils (210), two coils (210) near two ends of the fixed section (120) are respectively provided with a first electric connection end (230) and a second electric connection end (240), and the distance between the first electric connection end (230) and the second electric connection end (240) is not less than 8 mm.

8. An inductor according to claim 7, characterized in that the first electrical connection terminal (230) and the second electrical connection terminal (240) are spaced apart by 8-10 mm.

9. An inductor according to claim 1, further comprising a base (300), wherein the magnetic core (100) is arranged on the base (300).

10. An air conditioner characterized by comprising an inductor according to any one of claims 1 to 9.

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