CN217061740U - Three-phase reactor and air conditioner - Google Patents

Abstract

The utility model provides a three-phase reactor and air conditioner. The utility model discloses a three-phase reactor, include: the noise reduction device comprises an iron core, wherein the iron core comprises a first iron core and a second iron core, the second iron core comprises a connecting plate, a first connecting column, a first middle foot column, a second middle foot column, a third middle foot column and a second connecting column, the first connecting column and the second connecting column are connected with the first iron core, the first direction is perpendicular to the second direction, and a noise reduction sheet is arranged between each of the first middle foot column, the second middle foot column and the third middle foot column and the first iron core; the first winding assembly is sleeved on the first middle foot column, the second winding assembly is sleeved on the second middle foot column, and the third winding assembly is sleeved on the third middle foot column. Therefore, according to the utility model discloses a three-phase reactor has the advantage that the installation effectiveness is high and the noise is little.

Description

Three-phase reactor and air conditioner

Technical Field

The utility model relates to a reactor technical field, concretely relates to three-phase reactor and air conditioner.

Background

The reactor is an inductance element which depends on the inductance of the coil to block the current change, and is mainly used in low-frequency and industrial-frequency circuits to compensate the reactive capacity of the power supply, eliminate the AC ripple component, and improve the power factor of the power supply. As an important single-element reactor in the frequency conversion technology, the reactor is more and more widely applied to various technical fields along with the promotion of energy efficiency and the application of the frequency conversion technology, in particular to the technical fields of household appliances such as air conditioners, refrigerators, washing machines and the like; the reactor applied to the commercial air conditioner and the household high-power air conditioner has the advantages of high power, high current and large iron core volume, generally adopts three-phase power supply, and in the related technology, each phase adopts a single-phase reactor to work, so that the installation efficiency of the reactor is lower and the noise is higher.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the embodiment of the utility model provides a three-phase reactor and air conditioner.

The utility model discloses three-phase reactor, include:

the iron core comprises a first iron core and a second iron core, the second iron core comprises a connecting plate, a first connecting column, a first middle foot column, a second middle foot column, a third middle foot column and a second connecting column, the length directions of the first connecting column, the first middle foot column, the second middle foot column, the third middle foot column and the second connecting column are the first direction, the first connecting column, the first middle foot column, the second middle foot column, the third middle foot column and the second connecting column are sequentially arranged on the connecting plate at intervals along a second direction, the first connecting column and the second connecting column are both connected with the first iron core, the first direction is perpendicular to the second direction, wherein a noise reduction sheet is arranged between each of the first, second and third middle foot columns and the first iron core; and

the winding device comprises a first winding assembly, a second winding assembly and a third winding assembly, wherein the first winding assembly is sleeved on the first middle foot column, the second winding assembly is sleeved on the second middle foot column, and the third winding assembly is sleeved on the third middle foot column.

Therefore, according to the utility model discloses three-phase reactor has the advantage that installation effectiveness is high and the noise is little.

In some embodiments, each of the noise reduction tabs abuts against the first core, and each of the noise reduction tabs abuts against a respective one of the first, second, and third midfoot columns.

In some embodiments, the first iron core includes a plurality of first iron core pieces stacked along a third direction, two adjacent first iron core pieces are connected through a first rivet portion, the second iron core includes a plurality of second iron core pieces stacked along the third direction, two adjacent second iron core pieces are connected through a second rivet portion, and any two of the first direction, the second direction, and the third direction are perpendicular to each other.

In some embodiments, each of the first, second and third midfoot columns has a weld seam extending in the third direction on an end face thereof facing the first core, each of the noise reduction tabs comprising:

a body, an end surface of the body adjacent to a corresponding one of the first, second and third mid-foot pillars in the first direction is a first end surface, the first end surface is provided with a clearance groove extending along the third direction, and at least a part of the welding seam is accommodated in the clearance groove; and

a first limit plate and a second limit plate, the first limit plate and the second limit plate are positioned at two ends of the body in the third direction, each of the first and second limit plates having a limit surface and a guide surface facing a respective one of the first, second and third midfoot posts, the limiting surface of the first limiting plate is attached to one side wall surface of a corresponding one of the first midfoot column, the second midfoot column and the third midfoot column in the third direction, the limit surface of the second limit plate is attached to the other side wall surface of the corresponding one of the first midfoot column, the second midfoot column and the third midfoot column in the third direction, the guide surface of each of the first and second limiting plates is an inclined surface.

In some embodiments, it still is equipped with first dodge hole and second dodge hole to fall the piece of making an uproar, first dodge the hole with the second dodge the hole and be located in the third direction fall the both ends of piece of making an uproar, first dodge the hole along the first direction runs through first limiting plate with keep away some of dead slot diapire, the second dodge the hole along the first direction runs through the second limiting plate with keep away some of dead slot diapire, the diameter in first dodge the hole with the diameter in second dodge the hole all is greater than keep away the dead slot in size in the second direction.

In some embodiments, the outer surfaces of the first core and the second core are provided with insulating varnish.

The utility model discloses three-phase reactor still includes:

the mounting plate is connected with the end face, far away from the second iron core, of the first iron core in the first direction;

and/or the handle is connected with the end face, far away from the first iron core, of the connecting plate in the first direction.

In some embodiments, each of the first, second, and third winding components comprises:

a winding sleeved on a respective one of the first, second, and third mid-foot posts;

the insulating paper is annularly arranged on the winding so that the winding and the iron core are arranged at intervals and two adjacent windings are arranged at intervals; and

the terminal block assembly comprises an installation table, a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are arranged on the installation table, the first connecting piece is connected with the starting end of the winding, and the second connecting piece is connected with the ending end of the winding.

In some embodiments, each of the first, second, and third winding assemblies further comprises an insulating protective covering connected to the mounting table, a connection of the first connection tab to the start end of the winding is located within the insulating protective covering, and a connection of the second connection tab to the finish end of the winding is located within the insulating protective covering.

In some embodiments, a thickness direction of the first core is the first direction, a length direction of the first core is the second direction, the first core has a first sidewall surface and a second sidewall surface opposite to each other in the second direction, the first connection post has a third sidewall surface away from the second connection post in the second direction, the third sidewall surface is connected to the first sidewall surface by welding, the second connection post has a fourth sidewall surface away from the first connection post in the second direction, and the fourth sidewall surface is connected to the second sidewall surface by welding.

The utility model also provides an air conditioner, including foretell three-phase reactor.

Drawings

Fig. 1 is a schematic structural diagram of a three-phase reactor according to an embodiment of the present invention.

Fig. 2 is an exploded view of a three-phase reactor according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a first winding assembly according to an embodiment of the present invention.

Fig. 4 is an exploded view of a first winding assembly according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of an iron core according to an embodiment of the present invention.

Fig. 6 is a front view of a core according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a noise reduction sheet according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a noise reduction sheet according to an embodiment of the present invention.

Reference numerals are as follows:

a three-phase reactor 100;

the iron core comprises an iron core 1, a first iron core 11, a first iron core sheet 1101, a second riveting part 111, a second iron core 12, a second iron core sheet 1201, a connecting plate 121, a first connecting column 122, a first middle foot column 123, a second middle foot column 124, a third middle foot column 125, a second connecting column 126 and a second riveting part 127;

a first winding assembly 201, a second winding assembly 202, a third winding assembly 203;

a winding 21, a starting end 211, a finishing end 212, insulating paper 22, a mounting table 23, a first connecting sheet 24, a second connecting sheet 25, an insulating protective cover 26;

the noise reduction sheet 3, the body 31, the avoidance groove 311, the first avoidance hole 312, the second avoidance hole 313, the first limit plate 32, the second limit plate 33, the limit surface 34, the guide surface 35,

a mounting plate 4;

handle 5, first handle 51, second handle 52.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A three-phase reactor 100 according to an embodiment of the present invention is described below with reference to the drawings. As shown in fig. 1 to 8, a three-phase reactor 100 according to an embodiment of the present invention includes a core 1, a first winding assembly 201, a second winding assembly 202, and a third winding assembly 203.

The core 1 includes a first core 11 and a second core 12. The second iron core 12 includes a connecting plate 121, a first connecting column 122, a first middle-foot column 123, a second middle-foot column 124, a third middle-foot column 125 and a second connecting column 126, the length directions of the first connecting column 122, the first middle-foot column 123, the second middle-foot column 124, the third middle-foot column 125 and the second connecting column 126 are consistent with the first direction, and the first connecting column 122, the first middle-foot column 123, the second middle-foot column 124, the third middle-foot column 125 and the second connecting column 126 are sequentially arranged on the connecting plate 121 at intervals along the second direction. The first connection post 122 and the second connection post 126 are connected to the first core 11, and the first direction is perpendicular to the second direction.

Wherein, a noise reduction sheet 3 is arranged between each of the first, second and third middle leg columns 123, 124 and 125 and the first iron core 11. The first winding assembly 201 is sleeved on the first middle foot column 123, the second winding assembly 202 is sleeved on the second middle foot column 124, and the third winding assembly 203 is sleeved on the third middle foot column 125.

According to the utility model discloses three-phase reactor 100 is through setting up first well podium post 123, second well podium post 124 and third well podium post 125 on iron core 1, and the cover of first winding subassembly 201 is established and is regarded as a single-phase reactor on first well podium post 123, and the cover of second winding subassembly 202 is established and is regarded as a single-phase reactor on second well podium post 124, and the cover of third winding subassembly 203 is established and is regarded as a single-phase reactor on third well podium post 125. That is to say, according to the utility model discloses three-phase reactor 100's efficiency equals (is equivalent) with three single-phase reactor, from this, three-phase reactor 100 can regard as the reactor of the electrical apparatus of three-phase power supply, compares in installing a plurality of single-phase reactors on electrical apparatus, installs a three-phase reactor 100 and can satisfy the operation requirement of electrical apparatus to the reactor, and then improves the installation effectiveness of reactor.

The three-phase reactor 100 according to the embodiment of the present invention is provided with the noise reduction sheet 3 between each of the first, second and third center leg columns 123, 124 and 125 and the first iron core 11, so that the noise reduction sheet 3 can fill the air gap between each of the first, second and third center leg columns 123, 124 and 125 and the first iron core 11. Therefore, when the internal magnetic field of each of the three-phase reactors 100 of the first, second and third middle legs 123, 124 and 125 changes to generate vibration, the noise reduction plate 3 can reduce the amplitude of the first, second and third middle legs 123, 124 and 125, thereby reducing the noise generated by the first, second and third middle legs 123, 124 and 125, and further reducing the noise of the three-phase reactors 100.

Therefore, the three-phase reactor 100 according to the embodiment of the present invention has advantages of high installation efficiency and low noise.

As shown in fig. 1 to 8, a three-phase reactor 100 according to an embodiment of the present invention includes a core 1, a first winding assembly 201, a second winding assembly 202, and a third winding assembly 203.

As shown in fig. 2, 5 and 6, the core 1 includes a first core 11 and a second core 12. The first core 11 may be an I-type core and the second core 12 may be an E-type core.

The first core 11 includes a plurality of first core pieces 1101 stacked in the third direction, and adjacent two first core pieces 1101 are connected by a first rivet 111. Specifically, the thickness direction of the first ferrite sheet 1101 is a third direction, and the first clinch portions 111 are uniformly distributed on the first ferrite sheet 1101. The first clinch portion 111 includes a first protruding portion and a first groove portion, the first protruding portion and the first groove portion are respectively located on two end surfaces of the first iron core sheet 1101 opposite in the third direction, the first protruding portion of one of the adjacent two first iron core sheets 1101 is fitted in the first groove portion of the other one of the adjacent two first iron core sheets 1101, so that the adjacent two first iron core sheets 1101 are stacked together.

The plurality of first core pieces 1101 are stacked and crimped in the third direction to form the first core 11. The first core 11 has a plate shape, a thickness direction of the first core 11 is a first direction, and a length direction of the first core 11 is a second direction. Any two of the first direction, the second direction, and the third direction are perpendicular to each other. For convenience of explanation, the first direction is the up-down direction, the second direction is the left-right direction, and the third direction is the front-back direction. The up-down direction is indicated by an arrow a in the drawing, the left-right direction is indicated by an arrow B in the drawing, and the front-back direction is indicated by an arrow C in the drawing.

For example, a plurality of first core pieces 1101 are stacked and crimped in a front-rear direction to form a first core 11, a width direction of the first core 11 is the front-rear direction, a thickness direction of the first core 11 is an up-down direction, a length direction of the first core 11 is a left-right direction, a first groove portion is located on a front end surface of the first core piece 1101, and a first protrusion portion is located on a rear end surface of the first core piece 1101.

As shown in fig. 2, 5 and 6, the second core 12 includes a plurality of second core pieces 1201 stacked in the third direction, and adjacent two second core pieces 1201 are connected by the second rivet 127. Specifically, the thickness direction of the second iron core plate 1201 is a third direction, and the second clinch portions 127 are uniformly distributed at the edge of the first iron core plate 1101 in the first direction. The second clinching portion 127 includes second protruding portions and second groove portions, the second protruding portions and the second groove portions being respectively located on both end surfaces of the second iron core pieces 1201 in the third direction, the second protruding portion of one of the adjacent two second iron core pieces 1201 being fitted in the second groove portion of the other one of the adjacent two second iron core pieces 1201, so that the adjacent two second iron core pieces 1201 are stacked together. The shape of the first and second bosses may be one of square, rectangular, circular, and oval. The first iron core sheet 1101 and the second iron core sheet 1201 are both made of silicon steel sheets, and the second iron core sheet 1201 is integrally formed, so that the production efficiency of the second iron core 12 can be improved.

For example, a plurality of second core pieces 1201 are stacked and crimped in the front-rear direction to form the second core 12, the thickness direction of the second core 12 is the front-rear direction, the second groove portion is located on the front end surface of the second core piece 1201, and the second protrusion portion is located on the rear end surface of the second core piece 1201.

The second core 12 includes a connecting plate 121, a first connecting post 122, a first midfoot post 123, a second midfoot post 124, a third midfoot post 125 and a second connecting post 126. The length direction of the first connecting post 122, the first midfoot post 123, the second midfoot post 124, the third midfoot post 125 and the second connecting post 126 is coincident with the first direction, i.e., each of the first connecting post 122, the first midfoot post 123, the second midfoot post 124, the third midfoot post 125 and the second connecting post 126 extends in the first direction.

The first connecting column 122, the first middle foot column 123, the second middle foot column 124, the third middle foot column 125 and the second connecting column 126 are sequentially arranged on the connecting plate 121 at intervals along the second direction. The dimension of each of the first connection post 122 and the second connection post 126 in the second direction is 1/2 the dimension of each of the first midfoot post 123, the second midfoot post 124, the third midfoot post 125 in the second direction. The lengths of the slot between the first connecting post 122 and the first midfoot post 123 and the slot between the third midfoot post 125 and the second connecting post 126 in the second direction are 1/2 of the width of the slot between adjacent ones of the first midfoot post 123, the second midfoot post 124 and the third midfoot post 125.

The first connection post 122 and the second connection post 126 are both connected to the first core 11. So that the first core 11 and the second core 12 are connected and cooperate to form the core 1. The first, second and third midfoot columns 123, 124 and 125 are spaced apart from the first core 11 so that the first, second and third midfoot columns 123, 124 and 125 form an air gap with the first core 11.

Specifically, the first iron core 11 has a first side wall 112 and a second side wall 113 opposite to each other in the second direction, the first connection column 122 has a third side wall 1221 away from the second connection column 126 in the second direction, the third side wall 1221 is connected to the first side wall 112 in a welding manner, the second connection column 126 has a fourth side wall 1261 away from the first connection column 122 in the second direction, and the fourth side wall 1261 is connected to the second side wall 113 in a welding manner, so that the iron core 1 forms a closed loop, and flux leakage of the product is greatly reduced.

For example, the first core 11 is located below the second core 12, the length directions of the first connecting column 122, the first middle leg column 123, the second middle leg column 124, the third middle leg column 125 and the second connecting column 126 are vertical directions, and the first connecting column 122, the first middle leg column 123, the second middle leg column 124, the third middle leg column 125 and the second connecting column 126 are sequentially arranged on the connecting plate 121 at intervals from left to right.

The first side wall surface 112 is a left side wall surface of the first core 11, and the second side wall surface 113 is a right side wall surface of the first core 11. The third side wall 1221 is a left side wall of the first connecting column 122, the fourth side wall 1261 is a right side wall of the second connecting column 126, a lower edge of the left side wall of the first connecting column 122 is welded to an upper edge of the first side wall 112, and a lower edge of the right side wall of the second connecting column 126 is welded to an upper edge of the second side wall 113.

Each of the first, second and third center leg posts 123, 124 and 125 has a weld seam extending in the third direction on an end surface facing the first core 11. The solder joint may make the connection of the stacked second core plate 1201 more stable. For example, each of the first, second and third midfoot columns 123, 124 and 125 has a weld seam extending in the anterior-posterior direction on a lower end surface thereof.

In some embodiments, the outer surfaces of first core 11 and second core 12 are each provided with an insulating varnish. Specifically, the first core 11 and the second core 12 are impregnated with insulating varnish to perform overall insulation and increase overall heat dissipation of the core 1.

As shown in fig. 2, 7 and 8, a noise reduction plate 3 is provided between each of the first, second and third center leg posts 123, 124 and 125 and the first core 11. The noise reduction sheet 3 is made of PPS material with high hardness and small deformation. Each noise reduction tab 3 abuts against the first core 11, and each noise reduction tab 3 abuts against a corresponding one of the first, second and third center legs 123, 124 and 125. Thus, the noise reduction plate 3 can fill the air gap between each of the first, second and third center leg posts 123, 124 and 125 and the first iron core 11, so that the amplitude of the vibration of the first, second and third center leg posts 123, 124 and 125 can be reduced, the noise generated by the first, second and third center leg posts 123, 124 and 125 can be reduced, and the noise of the three-phase reactor 100 can be reduced.

As shown in fig. 7 and 8, the noise reduction chip 3 includes a body 31, a first stopper plate 32, and a second stopper plate 33.

The body 31 has a first end face 301 and a second end face opposite to each other in the first direction, the first end face 301 is adjacent to a corresponding one of the first middle leg column 123, the second middle leg column 124 and the third middle leg column 125 in the first direction relative to the second end face, the first end face 301 abuts against a corresponding one of the first middle leg column 123, the second middle leg column 124 and the third middle leg column 125, and the second end face abuts against the first iron core 11. The first end surface 301 is provided with a clearance slot 311 extending along the third direction, and at least a portion of the welding seam is received in the clearance slot 311, thereby facilitating the placement of the body 31 on a corresponding one of the first, second and third midfoot posts 123, 124, 125.

The first and second stopper plates 32 and 33 are located at both ends of the body 31 in the third direction, and each of the first and second stopper plates 32 and 33 has a stopper face 34 and a guide face 35 facing a corresponding one of the first, second, and third midfoot posts 123, 124, and 125. The limiting surface 34 of the first limiting plate 32 is attached to one side wall surface of a corresponding one of the first midfoot column 123, the second midfoot column 124 and the third midfoot column 125 in the third direction, the limiting surface 34 of the second limiting plate 33 is attached to the other side wall surface of a corresponding one of the first midfoot column 123, the second midfoot column 124 and the third midfoot column 125 in the third direction, and the guiding surface 35 of each of the first limiting plate 32 and the second limiting plate 33 is an inclined surface.

Specifically, the first end surface 301 and the limiting surface 34 are vertically arranged, the limiting surface 34 is a surface perpendicular to the third direction, and the limiting surface 34 is obliquely arranged relative to the guide surface 35, so that when the noise reduction plate 3 is placed on the first middle foot column 123, the second middle foot column 124 and the third middle foot column 125, the guide surface 35 facilitates guiding the noise reduction plate 3 to a correct position, and the two limiting surfaces 34 of the noise reduction plate 3 located at the correct position are attached to two side wall surfaces of the corresponding one of the first middle foot column 123, the second middle foot column 124 and the third middle foot column 125 in the third direction, so as to prevent the noise reduction plate 3 from moving in the third direction.

For example, the upper end surface (first end surface 301) of the body 31 abuts against the lower end surface of a corresponding one of the first, second, and third center legs 123, 124, and 125, and the lower end surface (second end surface) of the body 31 abuts against the upper end surface of the first core 11. The first stopper plate 32 and the second stopper plate 33 are disposed opposite to each other in the front-rear direction, and the stopper surface 34 is a surface perpendicular to the front-rear direction.

As shown in fig. 8, in some embodiments, the noise reduction tab 3 is further provided with a first escape hole 312 and a second escape hole 313. The first avoidance hole 312 and the second avoidance hole 313 are located at two ends of the noise reduction piece 3 in the third direction, the first avoidance hole 312 penetrates through a part of the bottom walls of the first limiting plate 32 and the avoidance groove 311 along the first direction, and the second avoidance hole 313 penetrates through a part of the bottom walls of the second limiting plate 33 and the avoidance groove 311 along the first direction. The welding area and the projection of the end part of the welding seam are large, the diameters of the first avoidance hole 312 and the second avoidance hole 313 are larger than the size of the avoidance groove 311 in the second direction, so that one end of the welding seam is located in the first avoidance hole 312, the other end of the welding seam is located in the second avoidance hole 313, and the noise reduction sheet is attached to one of the first middle foot column 123, the second middle foot column 124 and the third middle foot column 125. For example, the first and second escape holes 312 and 313 are located at both ends of the noise reduction piece in the front-rear direction.

As shown in fig. 1 and 2, the first winding assembly 201 is sleeved on the first middle leg 123, the second winding assembly 202 is sleeved on the second middle leg 124, and the third winding assembly 203 is sleeved on the third middle leg 125.

As shown in fig. 3 and 4, each of the first winding assembly 201, the second winding assembly 202, and the third winding assembly 203 includes a winding 21, an insulating paper 22, a terminal block assembly, and an insulating protection cover 26.

The winding 21 is fitted over a respective one of the first, second and third midfoot posts 123, 124, 125. The insulation paper 22 is wound around the winding 21 so that the winding 21 is spaced apart from the core 1 and two adjacent windings 21 are spaced apart. So that the winding 21 is arranged insulated from the core 1 and two adjacent windings 21 are arranged insulated.

The terminal block assembly includes a mounting block 23, a first connecting piece 24 and a second connecting piece 25, both the first connecting piece 24 and the second connecting piece 25 being provided on the mounting block 23. The first connecting tab 24 is connected to the start end 211 of the winding 21 by soldering, and the second connecting tab 25 is connected to the end 212 of the winding 21 by soldering, so that the first connecting tab 24 and the second connecting tab 25 are connected to the winding 21.

The insulating protective cover 26 is connected to the mounting block 23, the connection of the first connecting piece 24 to the starting end 211 of the winding 21 is located in the insulating protective cover 26, and the connection of the second connecting piece 25 to the end 212 of the winding 21 is located in the insulating protective cover 26. So that the insulating protective cap 26 insulates the connection of the first connecting piece 24 with the starting end 211 of the winding 21 and the connection of the second connecting piece 25 with the ending end 212 of the winding 21 from the outside.

As shown in fig. 1 and 2, the three-phase reactor 100 according to the embodiment of the present invention further includes a mounting plate 4 and a handle 5.

The mounting plate 4 is connected to an end surface of the first core 11 away from the second core 12 in the first direction. Thereby enabling the mounting plate 4 to be connected with the core 1 and facilitating the connection of the core 1 with other devices through the mounting plate 4.

The handle 5 is connected with the end face of the connecting plate 121 far away from the first iron core 11 in the first direction. Specifically, the handle 5 includes a first handle 51 and a second handle 52, the first handle 51 and the second handle 52 are located at both ends of the connection plate 121 in the second direction, and each of the first handle 51 and the second handle 52 includes a protruding portion so that the worker moves the iron core 1 through the handle 5, thereby facilitating the worker to move and install the three-phase reactor 100.

The utility model also provides an air conditioner, include according to the utility model discloses three-phase reactor 100.

Therefore, the air conditioner according to the embodiment of the present invention has the advantages of high installation efficiency and low noise of the three-phase reactor 100.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only 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 of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; 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 meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present disclosure. 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (11)

1. A three-phase reactor, comprising:

the iron core comprises a first iron core and a second iron core, the second iron core comprises a connecting plate, a first connecting column, a first middle foot column, a second middle foot column, a third middle foot column and a second connecting column, the length directions of the first connecting column, the first middle foot column, the second middle foot column, the third middle foot column and the second connecting column are the first direction, the first connecting column, the first middle foot column, the second middle foot column, the third middle foot column and the second connecting column are sequentially arranged on the connecting plate at intervals along a second direction, the first connecting column and the second connecting column are both connected with the first iron core, the first direction is perpendicular to the second direction, wherein a noise reduction sheet is arranged between each of the first, second and third mid-foot columns and the first iron core; and

the first winding assembly is sleeved on the first middle foot column, the second winding assembly is sleeved on the second middle foot column, and the third winding assembly is sleeved on the third middle foot column.

2. The three-phase reactor of claim 1, wherein each of the noise-reducing tabs abuts against the first core, and each of the noise-reducing tabs abuts against a respective one of the first, second, and third center legs.

3. The three-phase reactor according to claim 1, wherein the first core includes a plurality of first core pieces stacked in a third direction, two adjacent first core pieces are connected by a first rivet portion, the second core includes a plurality of second core pieces stacked in the third direction, two adjacent second core pieces are connected by a second rivet portion, and any two of the first direction, the second direction, and the third direction are perpendicular to each other.

4. The three-phase reactor according to claim 3, wherein each of the first, second, and third center leg legs has a weld joint extending in the third direction on an end surface thereof facing the first core, and each of the noise reduction tabs comprises:

a body, an end surface of the body adjacent to a corresponding one of the first, second and third mid-foot pillars in the first direction is a first end surface, the first end surface is provided with a clearance groove extending along the third direction, and at least a part of the welding seam is accommodated in the clearance groove; and

a first limit plate and a second limit plate, the first limit plate and the second limit plate are positioned at two ends of the body in the third direction, each of the first and second limit plates having a limit surface and a guide surface facing a respective one of the first, second and third midfoot posts, the limit surface of the first limit plate is attached to one side wall surface of one corresponding one of the first midfoot column, the second midfoot column and the third midfoot column in the third direction, the limiting surface of the second limiting plate is attached to the other side wall surface of the corresponding one of the first midfoot column, the second midfoot column and the third midfoot column in the third direction, the guide surface of each of the first and second limiting plates is an inclined surface.

5. The three-phase reactor according to claim 4, wherein the noise reduction sheet is further provided with a first avoidance hole and a second avoidance hole, the first avoidance hole and the second avoidance hole are located in the third direction at both ends of the noise reduction sheet, the first avoidance hole is formed by penetrating through the first limiting plate and a part of the bottom wall of the avoidance groove in the first direction, the second avoidance hole is formed by penetrating through the second limiting plate and a part of the bottom wall of the avoidance groove in the first direction, and the diameter of the first avoidance hole and the diameter of the second avoidance hole are larger than the size of the avoidance groove in the second direction.

6. The three-phase reactor according to claim 1, wherein the outer surfaces of the first and second cores are provided with an insulating varnish.

7. The three-phase reactor of claim 1, further comprising:

the mounting plate is connected with the end face, far away from the second iron core, of the first iron core in the first direction;

and/or the handle is connected with the end face, far away from the first iron core, of the connecting plate in the first direction.

8. The three-phase reactor of claim 1, wherein each of the first winding assembly, the second winding assembly, and the third winding assembly comprises:

a winding sleeved on a respective one of the first, second, and third mid-foot posts;

the insulating paper is annularly arranged on the winding so that the winding and the iron core are arranged at intervals and two adjacent windings are arranged at intervals; and

the terminal block assembly comprises an installation table, a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are arranged on the installation table, the first connecting piece is connected with the starting end of the winding, and the second connecting piece is connected with the ending end of the winding.

9. The three-phase reactor according to claim 8, characterized in that each of the first, second, and third winding assemblies further comprises an insulating protective case connected to the mount table, a connection of the first connection piece to a start end of the winding is located within the insulating protective case, and a connection of the second connection piece to an end of the winding is located within the insulating protective case.

10. The three-phase reactor according to claim 1 or 2, characterized in that the thickness direction of the first iron core is the first direction, the length direction of the first iron core is the second direction, the first iron core has a first side wall surface and a second side wall surface opposite to each other in the second direction, the first connection column has a third side wall surface away from the second connection column in the second direction, the third side wall surface is connected to the first side wall surface by welding, the second connection column has a fourth side wall surface away from the first connection column in the second direction, and the fourth side wall surface is connected to the second side wall surface by welding.

11. An air conditioner characterized by comprising a three-phase reactor according to any one of claims 1 to 10.

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