JP2020043293A - Reactor and outdoor equipment - Google Patents

Abstract

To provide a reactor and outdoor equipment capable of improving heat dissipation.SOLUTION: A reactor includes a core 32 including a plurality of first electromagnetic steel sheets 41 stacked and a pair of coil housing recesses, a coil 33 wound around the core 32 and partially disposed in the pair of coil housing recesses, and the surface of the core 32 that is in contact with the coil 33 is a flat surface, and a plurality of projections and depressions 36 formed by alternately arranging a plurality of first projections 36A and first depressions 36B in the height direction (Z direction) of the core 32 are provided in the ends 32C and 32D of the core 32 arranged in the width direction (X direction) perpendicular to the lamination direction in which the plurality of first electromagnetic steel sheets 41 are laminated.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a reactor and an outdoor unit.

  An outdoor unit of an air conditioner includes an inverter device that drives a motor such as a compressor and a fan, a high-frequency suppression device generated by the inverter, and the like. One of the electrical components that constitutes these devices is a reactor. The reactor suppresses noise generated by the flow of a large current from adversely affecting other electric products.

  The reactor has a core portion composed of a plurality of laminated electromagnetic steel sheets, and a coil portion wound around the core portion. Since the reactor is a heating element, it is desired that the reactor has excellent heat dissipation (for example, see Patent Document 1).

  Patent Literature 1 discloses a coil unit in which a rectangular wire having a rectangular cross section perpendicular to the longitudinal direction is spirally wound and laminated to form a coil.

JP 2011-249490 A

By the way, for example, when it is desired to improve the heat radiation of the core portion, when a plurality of electromagnetic steel sheets are spirally laminated as in Patent Document 1, contact between the coil portion and the spirally shaped core portion is caused. The area is reduced.
This makes it difficult for the heat generated in the coil portion to be conducted to the core portion, so that the heat radiation performance of the reactor may be reduced.

  Therefore, an object of the present invention is to provide a reactor and an outdoor unit capable of improving heat radiation performance.

  In order to solve the above-described problem, a reactor according to one embodiment of the present invention is configured by stacking a plurality of electromagnetic steel sheets for a core, and includes a core including a pair of coil housing recesses, and a core wound around the core. A part of which is disposed in the pair of coil accommodating recesses, and a surface of the core part that is in contact with the coil part is a flat surface, and the plurality of magnetic steel sheets for the core part are An end of the core portion, which is arranged in a width direction orthogonal to the stacking direction in which the layers are stacked, has a first protrusion in a height direction of the core portion orthogonal to the stacking direction and the width direction. And a plurality of first concave portions are provided alternately, and a plurality of concave and convex portions are provided.

According to the present invention, by making the surface of the core portion that is in contact with the coil portion a flat surface, it is possible to suppress a decrease in the contact area between the surface of the core portion and the coil portion. Thereby, heat generated in the coil portion can be efficiently conducted to the core portion.
The end of the core in the width direction orthogonal to the lamination direction in which the plurality of electromagnetic steel sheets for the core are laminated includes a plurality of projections and depressions arranged in the width direction, thereby forming a plurality of first protrusions. Since the portion functions as a radiation fin, the radiation performance of the core portion can be improved.

  Further, in the reactor according to one embodiment of the present invention, a second convex portion constituting the first convex portion is provided at an end of the plurality of electromagnetic steel sheets for cores arranged in the width direction; The second recesses forming the first recesses are provided alternately in the height direction, and the plurality of electromagnetic steel sheets for the core may have the same shape.

  As described above, the second convex portions and the second concave portions are alternately provided at the end portions, and the core portion is formed by using the plurality of electromagnetic steel plates for the core portion having the same shape, thereby forming the same shape. Since it is sufficient to prepare only the electromagnetic steel sheet for the core part, the cost of the reactor can be reduced as compared with the case where a plurality of electromagnetic steel sheets for the core part having different shapes are used.

  Further, in the reactor according to one embodiment of the present invention, the first recess may be a flow path through which air flows, and may extend in the stacking direction.

  As described above, the first concave portion extends in the stacking direction and serves as an air flow path, so that air is supplied to the surface of the first convex portion which is exposed to the first concave portion and functions as a radiation fin. Becomes possible. Thereby, the heat radiation performance at the end of the core portion can be improved.

  Further, in the reactor according to one aspect of the present invention, the first recess is a flow path of air extending in the laminating direction, and the plurality of electromagnetic steel sheets for a core include a first electromagnetic steel sheet; A second electromagnetic steel sheet disposed between the first electromagnetic steel sheet and the first electromagnetic steel sheet adjacent to each other in the laminating direction; and the core located at the end of the first electromagnetic steel sheet located in the width direction. In the height direction of the portion, a second convex portion forming the first convex portion and a second concave portion forming the first concave portion are provided alternately, and the second electromagnetic portion is provided. The size of the steel plate in the width direction is set to a size such that the second electromagnetic steel plate does not interfere with the first recess, and the air flows out from an inlet side of the first recess into which the air flows. The first electromagnetic steel sheets adjacent to each other as they approach the exit side of the first recess Number may be reduced in the second electromagnetic steel plates disposed therebetween.

As described above, the plurality of magnetic steel sheets for the core portion are constituted by the first and second magnetic steel sheets having the above-described configuration, and the first concave portion through which air flows out from the inlet side of the first concave portion into which air flows. By decreasing the number of the second electromagnetic steel sheets disposed between the first electromagnetic steel sheets toward the outlet side, the ratio of the second convex portions on the entrance side of the first concave portion is more than the ratio of the second convex portions. It is possible to increase the ratio of the second convex portion on the outlet side of the concave portion.
Thereby, the heat exchange with the second convex portion arranged on the inlet side of the first concave portion enhances the heat radiation performance of the core portion on the outlet side of the first concave portion through which the air having the increased temperature flows. Can be.

  Further, in the reactor according to the aspect of the present invention, a plurality of concave portions and convex portions may be provided at an end of the second electromagnetic steel sheet in the width direction.

  As described above, since the plurality of concave portions and convex portions are provided at the end in the width direction of the second electromagnetic steel sheet, the ratio of the region functioning as the radiation fin can be increased.

  The reactor according to one aspect of the present invention may further include a lid fixed to the core portion so as to close an open end of the pair of coil housing recesses. And a plurality of other irregularities arranged in a width direction orthogonal to the laminating direction are provided, and the plurality of other irregularities are formed with a third convex portion with respect to the width direction. , And the third concave portion may be alternately arranged.

  In this manner, a plurality of third convex portions extending in the laminating direction and a plurality of third concave portions extending in the laminating direction are alternately arranged on the outer surface side of the lid portion in the width direction orthogonal to the laminating direction. By having a plurality of other irregularities configured as described above, the plurality of third convex portions can function as heat radiation fins, and the plurality of third concave portions can function as flow paths through which air flows. Becomes possible. Accordingly, since the radiation fins are provided not only in the core but also in the lid, the radiation characteristics of the reactor can be improved.

  Further, in the reactor according to one aspect of the present invention, the plurality of electromagnetic steel plates for the lid may have the same shape.

  As described above, by making the plurality of electromagnetic steel sheets for the lid part the same shape, the cost of the reactor can be reduced as compared with the case where a plurality of electromagnetic steel sheets for the lid part having different shapes are used.

  In order to solve the above problems, an outdoor unit according to one embodiment of the present invention includes the reactor, an inverter circuit electrically connected to the reactor, and a compressor electrically connected to the reactor. The reactor may be provided in a machine room, and the reactor may be arranged between the inverter circuit and the compressor.

  In this way, by providing a reactor having excellent heat dissipation performance in the machine room of the outdoor unit, it is possible to suppress the temperature rise in the machine room and to make the reactor itself smaller, thereby improving the degree of freedom of installation. Can be.

  According to the present invention, the heat radiation performance of the reactor can be improved.

It is a perspective view showing the schematic structure of the outdoor unit concerning a 1st embodiment of the present invention. It is a front view of the reactor shown in FIG. FIG. 3 is a top view of a structure in which a lid is removed from the reactor shown in FIG. 2. FIG. 4 is a top view of a core part excluding a coil part from the structure shown in FIG. 3. FIG. 5 is a front view of a first electromagnetic steel sheet constituting a core part shown in FIG. 4. FIG. 3 is a top view of a lid constituting the reactor shown in FIG. 2. It is a front view of the reactor concerning a 2nd embodiment of the present invention. FIG. 8 is a top view of a lid constituting the reactor shown in FIG. 7. It is a front view of the reactor concerning a 3rd embodiment of the present invention. It is a top view of the core part shown in FIG. It is a front view of the 2nd electromagnetic steel plate which comprises the core part shown in FIG. It is a front view of the reactor concerning a 4th embodiment of the present invention. It is a front view of the 2nd electromagnetic steel plate which comprises the core part shown in FIG. It is the figure which expanded the side of the core part which constitutes the reactor concerning a 5th embodiment of the present invention.

(First embodiment)
An outdoor unit 10 according to a first embodiment of the present invention will be described with reference to FIG.
The outdoor unit 10 includes a machine room 12, a housing 14, a heat exchanger 16, and a plurality of fans 21.

  The machine room 12 includes a housing 22, a compressor 24, an inverter circuit 27, a reactor 30, a water heat exchanger (not shown), a water pipe (not shown), and an expansion valve (not shown). ), A refrigerant pipe (not shown), and a water circulation pump (not shown).

  The housing 22 houses a compressor 24, an inverter circuit 27, a reactor 30, a water heat exchanger, an expansion valve, a refrigerant pipe, a water pipe, and a water circulation pump.

  The compressor 24 is connected to a four-way switching valve, a water heat exchanger, and an expansion valve via a refrigerant pipe. The compressor 24 has a motor. The compressor 24 adjusts the amount of refrigerant discharged to the refrigerant pipe by controlling the number of rotations of the motor. The compressor 24 is electrically connected to the reactor 30.

  The inverter circuit 27 drives the motor of the compressor 24. Inverter circuit 27 is electrically connected to reactor 30. The inverter circuit 27 is electrically connected to the compressor 24 via the reactor 30.

The reactor 30 will be described with reference to FIGS. In FIG. 2, O ₁ indicates a central axis of the reactor 30 (hereinafter, referred to as “central axis O ₁ ”).
2 to 6, the X direction is the width direction of the reactor 30 orthogonal to the laminating direction in which the plurality of first electromagnetic steel sheets 41 are laminated (the Y direction shown in FIGS. 3, 4, and 6). The Z direction indicates the height direction of the reactor 30 orthogonal to the X direction.
The Y direction shown in FIGS. 3, 4, and 6 indicates the lamination direction in which the plurality of first electromagnetic steel sheets 41 are laminated as described above.
2 and 5, the Z direction is the height direction of the core portion (the height direction of the reactor 30).
2 and 3, the coil part 33 configured by winding an electric wire is illustrated in a simplified manner.

In FIG. 5, O ₁ is a central axis (hereinafter, referred to as “central axis O ₁ ”) of the connecting portion 45, the first portion 46, and the first electromagnetic steel sheet 41, and W 1 is a main body constituting the second portion 47. The width in the X direction of the portion 55 (hereinafter, referred to as “width W1”) and W2 indicate the width in the X direction of the main body 63 constituting the third portion 48 (hereinafter, referred to as “width W2”), respectively.
In FIG. 5, T1 is the height of the connecting portion 45 (hereinafter, referred to as “height T1”), T2 is the height of the first portion 46 (hereinafter, referred to as “height T2”), and T3 is the height of the main body portion 55. The height (hereinafter, referred to as “height T3”) and T4 indicate the height of the main body 63 (hereinafter, referred to as “height”), respectively.
In FIG. 5, S1 is a protrusion amount of the second protrusion 57 projecting from the main body portion 55 (hereinafter, referred to as “projection amount S1”), and S2 is a protrusion amount of the second protrusion 65 protruding from the main body portion 63 ( Hereinafter, it is referred to as “projection amount S2”).

The reactor 30 has a core part 32, a coil part 33, and a lid part 35.
The core portion 32 has a winding portion 43, coil accommodating concave portions 32A and 32B (a pair of coil accommodating concave portions), and a plurality of irregularities 36.

  The winding part 43 is arranged at the center of the core part 32 and extends in the Y direction. The winding part 43 is wound with an electric wire constituting the coil part 33.

  The coil housing recesses 32A and 32B (a pair of coil housing recesses) are arranged so as to sandwich the winding part 43 from the X direction. The coil accommodating recesses 32A and 32B extend in the Y direction, and a part of the coil unit 33 is disposed.

The coil accommodating recess 32A is defined by side surfaces 32Aa, 32Ab and a bottom surface 32Ac formed in the core portion 32. The side surfaces 32Aa, 32Ab and the bottom surface 32Ac are surfaces that are in contact with the electric wires forming the coil portion 33, and are flat surfaces.
The coil housing recess 32B is defined by side surfaces 32Ba, 32Bb and a bottom surface 32Bc formed in the core portion 32. The side surfaces 32Ba and 32Bb and the bottom surface 32Bc are surfaces that are in contact with the electric wires forming the coil portion 33 and are flat.

  As described above, by making the side surfaces 32Aa, 32Ab, 32Ba, 32Bb and the bottom surfaces 32Ac, 32Bc of the core portion 32 that come into contact with the coil portion 33 into planes, the side surfaces 32Aa, 32Ab, 32Ba, 32Bb and the bottom surfaces 32Ac, 32Bc and the coil portion are formed. 33 can be reduced. Thereby, the heat generated in the coil part 33 can be efficiently conducted to the core part 32.

  Further, by making the side surfaces 32Aa, 32Ab, 32Ba, 32Bb and the bottom surfaces 32Ac, 32Bc flat, the plurality of first electromagnetic steel plates 41 can be easily laminated as compared with a case where a plurality of electromagnetic steel plates are spirally arranged. It is possible to do. Thereby, an increase in the cost of the reactor 30 can be suppressed.

The plurality of irregularities 36 are arranged on the ends 32C and 32D of the core 32 arranged in the X direction. The plurality of irregularities 36 include a plurality of first convex portions 36A and a plurality of first concave portions 36B.
The first convex portion 36A is a portion that protrudes in the X direction and extends in the Y direction. The plurality of first protrusions 36A are arranged at intervals in the Z direction. The first convex portion 36A is a portion that functions as a radiation fin.

The first concave portion 36B is provided between the first convex portions 36A adjacent to each other in the Z direction. Thereby, the plurality of first protrusions 36A and first recesses 36B are alternately arranged in the Z direction.
The first concave portion 36B extends in the Y direction. The first concave portion 36B functions as a flow path through which air flows.
As described above, the first concave portion 36B extends in the Y direction and serves as an air flow path, so that air can be supplied to the surface of the first convex portion 36A exposed to the first concave portion 36B. Becomes Thereby, the heat radiation performance at the ends 32C and 32D of the core 32 can be improved.

  The core portion 32 having the above-described configuration is configured by stacking a plurality of first electromagnetic steel plates 41 (a plurality of electromagnetic steel plates) in the Y direction.

  The first electromagnetic steel plate 41 has a connecting portion 45, a first portion 46, a second portion 47, a third portion 48, a first concave portion 51, and a second concave portion 52. .

The connecting portion 45 is a rectangular plate portion extending in the X direction. The connecting portion 45 has a surface 45a arranged on one side in the Z direction and orthogonal to the Z direction, and a surface 45b arranged on the other side in the Z direction and orthogonal to the Z direction.
The width of the connecting portion 45 in the X direction is set to be equal to the sum of the width of the first portion 46, the width of the first concave portion 51, and the width of the second concave portion 52 in the X direction.

The first portion 46 is provided on a surface 45 a at a central portion of the connecting portion 45. The first portion 46 is a rectangular plate portion extending from the surface 45a of the connecting portion 45 to one side in the Z direction. The central axis O1 of the _first portion 46 coincides with the central axis of the connecting portion 45. The first portion 46 is formed integrally with the connecting portion 45.
The first portion 46 is sandwiched between the first concave portion 51 and the second concave portion 52 in the X direction.
The winding part 43 described above is configured by a first portion 46 configuring a plurality of first electromagnetic steel sheets 41 stacked in the Y direction.

The second portion 47 has a main body 55, a plurality of second protrusions 57, and a plurality of second recesses 58.
The main body portion 55 is a rectangular plate member whose longitudinal direction is the Z direction. The main body 55 has a surface 55a arranged on the other side in the Z direction and a surface 55b arranged on one side in the X direction.
The main body portion 55 is provided at an end of the connecting portion 45 arranged on one side in the X direction such that the surface 55a is flush with the surface 45b.

  The plurality of second protrusions 57 are arranged on the surface 55 b side of the main body 55. The plurality of second protrusions 57 are arranged in the Z direction with an interval in the Z direction. The second convex portion 57 protrudes from the surface 55b of the main body 55 to one side in the X direction. The second convex portion 57 forms a part of the first convex portion 36A.

The plurality of second concave portions 58 are arranged between the second convex portions 57 arranged in the Z direction. The second concave portions 58 are arranged at intervals in the Z direction. The second concave portion 58 forms a part of the first concave portion 36B.
The plurality of second convex portions 57 and second concave portions 58 are alternately arranged in the Z direction.

The third portion 48 has a main body 63, a plurality of second protrusions 65, and a plurality of second recesses 66.
The main body 63 is a rectangular plate member whose longitudinal direction is the Z direction. The main body 63 has a surface 63a arranged on the other side in the Z direction and a surface 63b arranged on the other side in the X direction.
The main body 63 is provided at an end of the connecting portion 45 arranged on the other side in the X direction such that the surface 63a is flush with the surface 45b.
The width W2 of the main body 63 is configured to be equal to the width W1 of the main body 55 described above.

  The plurality of second convex portions 65 are arranged on the surface 63b side of the main body 63. The plurality of second convex portions 65 are arranged in the Z direction with a space in the Z direction. The second convex portion 65 protrudes from the surface 63b of the main body 63 to the other side in the X direction. The second convex portion 65 forms a part of the first convex portion 36A.

The plurality of second concave portions 66 are arranged between the second convex portions 65 arranged in the Z direction. The second concave portions 66 are arranged at intervals in the Z direction. The second concave portion 66 forms a part of the first concave portion 36B. The plurality of second convex portions 65 and second concave portions 66 are alternately arranged in the Z direction.
The protrusion amount S2 of the second protrusion 65 is configured to be equal to the protrusion amount S1 of the second protrusion 57.
In the first embodiment, as an example, the case where the protrusion amount S2 of the second protrusion 65 is equal to the protrusion amount S1 of the second protrusion 57 has been described, but the protrusion amounts S1, S2 may be different.

The first recess 51 is formed between the first part 46 and the second part 47. The first recess 51 forms a part of the coil housing recess 32A.
The second concave portion 52 is formed between the first portion 46 and the third portion 48. The second concave portion 52 forms a part of the coil housing concave portion 32B. The width W4 of the second concave portion 52 is configured to be equal to the width W3 of the first concave portion 51.

First electromagnetic steel plates 41 having the above construction is the center axis O ₁ and the shape of line symmetry to the symmetry axis.

  As described above, the plurality of second concave portions 58 and 66 and the second convex portions 57 and 65 forming the plurality of unevennesses 36 are provided at the end portions 32C and 32D, and the plurality of first shapes having the same shape are provided. By forming the core part 32 using only the electromagnetic steel sheet 41 (electromagnetic steel sheet for the core part), it is sufficient to prepare only the first electromagnetic steel sheet 41 having the same shape, so that a plurality of cores having different shapes are provided. The cost of the reactor 30 can be reduced as compared with the case of preparing a magnetic steel sheet for a part.

The lid portion 35 is a plate-shaped member, and has a surface 35a partly in contact with the core portion 32, a surface 35b (outer surface) arranged on the opposite side of the surface 35a, and a convex portion 35A.
The lid 35 is fixed to the core 32 in a state where the surface 35a and the core 32 are in contact with each other so as to close the open ends (upper ends) of the pair of coil housing recesses 32A and 32B. The lid 35 is fixed to the core 32 by, for example, a method such as welding.

The protrusions 35A are provided at both ends of the lid 35 located in the X direction. The protrusion 35A extends in the Y direction while protruding in the X direction.
The convex portion 35A faces the first convex portion 36A at an interval in the Z direction. Thus, a concave portion 74 that extends in the Y direction and serves as an air flow path is formed between the convex portion 35A and the first convex portion 36A in the Z direction. The convex portion 35A and the concave portion 74 constitute other irregularities.

The lid 35 has a configuration in which a plurality of electromagnetic steel plates 71 for the lid are stacked in the Y direction. Here, the electromagnetic steel plate 71 for the lid will be described.
The electromagnetic steel plate 71 for the cover has protrusions 72 provided at both ends in the X direction and constituting a part of the protrusion 35A. The convex portion 35A is configured by a plurality of convex portions 72 stacked in the Y direction.

The water heat exchanger causes heat exchange between the refrigerant flowing through the refrigerant pipe and water flowing through the water pipe.
The water pipe includes a first water pipe (not shown) for supplying water from outside the outdoor unit 10 to the water heat exchanger, and a second water pipe for discharging water from the water heat exchanger to the outside of the outdoor unit 10. Piping (not shown).
The expansion valve is connected to the heat exchanger 16. The water circulation pump supplies water to the water heat exchanger.
The outdoor unit 10 performs both the cooling operation and the heating operation by switching the four-way switching valve.

The housing 14 is provided on the machine room 12. The housing 14 has a side wall 14A in which an outside air suction port 14B is formed, and a plurality of openings 14D formed in a top plate 14C.
The outside air suction port 14B is used when taking outside air into the housing 14.
The plurality of openings 14 </ b> D are openings for drawing outside air that has been sucked into the housing 14 and contributed to heat exchange to the outside of the housing 14.

The heat exchanger 16 is housed in the housing 14. The heat exchanger 16 is a pneumatic heat exchanger.
The heat exchanger 16 has a plurality of heat transfer tubes that can come into contact with outside air (air) sucked through the outside air suction port 14 </ b> B and that is connected to the compressor 24.
The refrigerant supplied from the compressor 24 flows in the plurality of heat transfer tubes. In the heat exchanger 16, the refrigerant flowing in the plurality of heat transfer tubes exchanges heat with the outside air.

  The plurality of fans 21 are arranged below each opening 14D. The plurality of fans 21 face one opening 14D in the height direction of the outdoor unit 10. The plurality of fans 21 cause the outside air to be sucked into the housing 14 and discharge the heat-exchanged outside air to the outside of the housing 14.

According to the reactor 30 of the first embodiment, the side surfaces 32Aa, 32Ab, 32Ba, and 32Bb and the bottom surfaces 32Ac and 32Bc of the core portion 32 that come into contact with the coil portion 33 are flat, so that the side surfaces 32Aa, 32Ab, 32Ba, and 32Bb are formed. And it can control that the contact area between bottom surface 32Ac, 32Bc and coil part 33 falls. Thereby, the heat generated in the coil part 33 can be efficiently conducted to the core part 32.
The ends 32C and 32D of the core portion 32 in the X direction have a plurality of irregularities 36 formed by alternately arranging the first convex portions 36A and the first concave portions 36B in the Z direction. Thus, since the plurality of first convex portions 36A function as radiation fins, the radiation performance of the core portion 32 can be improved.

  As described above, by providing the reactor 30 having excellent heat radiation performance in the machine room 12 of the outdoor unit 10, it is possible to contribute to suppression of a temperature rise in the machine room 12 and to make the reactor 30 itself compact. The degree of freedom can be improved.

  In the first embodiment, as an example, the case where a plurality of irregularities 36 are arranged at both ends (ends 32C and 32D) of the core 32 located in the X direction has been described as an example. A plurality of irregularities 36 may be provided only at one end of the two ends.

In the first embodiment, as an example, the reactor 30 in a state viewed from the front, both end portions so as to be axisymmetrical to the central axis O ₁ and axis of symmetry (end 32C, 32D) of the plurality of first The case where the convex portion 36A and the first concave portion 36B are provided has been described as an example. For example, the plurality of first convex portions 36A and the first concave portions 36B provided at both ends are not line-symmetric. Alternatively, a plurality of first convex portions 36A and first concave portions 36B may be arranged. In this case, the same effect as that of the reactor 30 of the first embodiment can be obtained.

  Further, in the first embodiment, as an example, the case where the widths of the plurality of first protrusions 36A and the first recesses 36B in the Z direction are set to the same size has been illustrated and described. May have different widths of the plurality of first convex portions 36A, and may have different widths of the first concave portions 36B in the Z direction.

(Second embodiment)
A reactor 80 according to the second embodiment will be described with reference to FIGS. 7, the same components as those of the structure shown in FIG. 2 are denoted by the same reference numerals. 8, the same components as those of the structure shown in FIG. 7 are denoted by the same reference numerals.

  The reactor 80 is configured in the same manner as the reactor 30 except that the reactor 80 has a lid 81 instead of the lid 35 constituting the reactor 30 of the first embodiment.

The lid portion 81 has the same configuration as the lid portion 35 except that a plurality of other irregularities 83 are further provided in the configuration of the lid portion 35 described in the first embodiment.
The plurality of other irregularities 83 are provided on the surface 35 b of the lid 81, which is the outer surface of the reactor 80. The plurality of other irregularities 83 include a plurality of third convex portions 85 extending in the Y direction and a plurality of third concave portions 86 extending in the Y direction.

The plurality of third convex portions 85 protrude from the surface 35b in the Z direction, and are arranged in the X direction at intervals. The plurality of third convex portions 85 are portions that function as radiation fins.
The third concave portion 86 is disposed in the X direction, and is disposed between the third convex portions 85 adjacent to each other. Thus, the plurality of third concave portions 86 are arranged in the X direction at intervals. The plurality of third concave portions 86 are portions that function as flow paths through which air flows.

  The lid portion 81 having the above-described configuration is configured by laminating a plurality of electromagnetic steel plates 88 for the lid portion in a Y direction, the shapes corresponding to the shape of the lid portion 81 when viewed from the front.

  According to the reactor 80 of the second embodiment, the third convex portions 85 extending in the Y direction and the third concave portions 86 extending in the Y direction are alternately arranged on the surface 35b side of the lid portion 81 in the X direction. Having a plurality of other concavities and convexities 83 formed by arranging a plurality of third convex portions 85 as radiation fins, and a plurality of third concave portions 86 Can function as a flow path through which the fluid flows. Thus, since the radiation fins are provided not only in the core portion 32 but also in the lid portion 81, the radiation characteristics of the reactor 80 can be further improved.

  In the second embodiment, as an example, the case where the widths of the plurality of third convex portions 85 and the third concave portions 86 in the X direction are the same is illustrated and described. May have different widths of the plurality of third convex portions 85, and may have different widths of the third concave portions 86 in the X direction.

(Third embodiment)
A reactor 90 according to the third embodiment will be described with reference to FIGS. 9, the same components as those of the structure shown in FIG. 2 are denoted by the same reference numerals. 10, the same components as those of the structure shown in FIGS. 4 and 9 are denoted by the same reference numerals. 11, the same components as those of the structure shown in FIGS. 5, 9, and 10 are denoted by the same reference numerals.

The reactor 90 has the same configuration as the reactor 30 except that the reactor 90 has a core 91 instead of the core 32 constituting the reactor 30 of the first embodiment.
The core portion 91 has the same configuration as that of the core portion 32 except that the core portion 91 has a plurality of unevennesses 93 at the end portions 91A and 91B instead of the plurality of unevennesses 36 forming the core portion 32 described in the first embodiment. Have been.

  The plurality of concavities and convexities 93 constitute end portions 91A and 91B of the core portion 91 arranged in the X direction. The plurality of irregularities 93 include a plurality of first convex portions 93A and a plurality of first concave portions 93B.

The first convex portion 93A is a portion protruding in the X direction. The plurality of first convex portions 93A are portions that function as radiation fins.
The plurality of first protrusions 93A are arranged at a fixed interval in the Z direction, and are arranged at different intervals in the Y direction.
Specifically, the plurality of first protrusions 93A are formed on the outlet side (core side) of the first recess 93B from which air flows out from the inlet side of the first recess 93B into which air flows (the front side of the core portion 91). The distance between the first protrusions 93A adjacent to each other (the distance between the two first protrusions 93A) is configured to be narrower toward the rear side of the portion 91).

As described above, as the air goes from the inlet side of the first concave portion 93B into which the air flows in (the front side of the core portion 91) to the outlet side of the first concave portion 93B in which the air flows out (the back side of the core portion 91), Y By narrowing the interval between the first convex portions 93A arranged in the direction, the exit side of the first concave portion 93B is higher than the density of the first convex portion 93A (radiation fin) at the entrance side of the first concave portion 93B. It is possible to increase the density of the first convex portions 93A (radiation fins).
Thereby, the heat radiation performance of the core portion 91 on the outlet side of the first recess 93B through which air having a higher temperature than the inlet side of the first recess 93B flows can be improved.

  The first concave portion 93B is provided between the first convex portions 93A adjacent to each other in the Z direction, and extends in the Y direction. The plurality of first concave portions 93B are arranged at intervals in the Z direction. The first recess 93B functions as a flow path through which air flows.

The core portion 91 having the above-described configuration includes a plurality of first electromagnetic steel sheets 41 arranged apart from each other in the Y direction and a second electromagnetic steel sheet 41 arranged between the first electromagnetic steel sheets 41 arranged in the Y direction. And an electromagnetic steel sheet 98. That is, the core section 91 includes a plurality of first and second electromagnetic steel sheets 41 and 98 as core section electromagnetic steel sheets.
The first convex portion 93A is constituted by one second convex portion 57 constituting the first electromagnetic steel sheet 41. The first recess 93B includes a plurality of second recesses 58 arranged in the Y direction.

The second electromagnetic steel sheet 98 has a first portion 46 which is a part of the wound portion 43, a first recess 51 which is a part of the coil housing recess 32A, and a first portion which is a part of the coil housing recess 32B. And two concave portions 52. The width of the second electromagnetic steel sheet 98 is set to a size that does not cause the second electromagnetic steel sheet 98 to interfere with the first recess 93B.
The number of the second electromagnetic steel sheets 98 disposed between the two first electromagnetic steel sheets 41 is configured to decrease from the entrance side of the first recess 93B toward the exit side of the first recess 93B. ing.
Thereby, the density of the first convex portions 93A (radiation fins) at the outlet side of the first concave portion 93B is made higher than the density of the first convex portions 93A (radiation fins) at the entrance side of the first concave portion 93B. be able to.

  According to the reactor 90 of the third embodiment, the core portion 91 is configured by using a plurality of first and second electromagnetic steel plates 41 and 98 having different shapes, and the first concave portion 93B into which air flows is formed. By decreasing the number of the second electromagnetic steel sheets 98 disposed between the first electromagnetic steel sheets 41 from the inlet side to the outlet side, the second convex portions 57 (on the inlet side of the first concave portion 93B) are reduced. The ratio of the second protrusion 57 (first protrusion 93A) on the exit side of the first recess 93B can be higher than the ratio of the first protrusion 93A).

  Thereby, heat exchange occurs with the second convex portion 57 disposed on the entrance side of the first concave portion 93B, and heat radiation of the core portion 91 on the exit side of the first concave portion 93B through which the temperature-increased air flows. Performance can be enhanced.

  Note that, instead of the lid 35 constituting the reactor 90, the lid 81 described in the second embodiment may be provided.

(Fourth embodiment)
A reactor 100 according to a fourth embodiment will be described with reference to FIGS. 12, the same components as those of the structure shown in FIG. 9 are denoted by the same reference numerals. 13, the same components as those of the structure shown in FIG. 12 are denoted by the same reference numerals.

  Reactor 100 is configured similarly to reactor 90 except that it has a plurality of second electromagnetic steel plates 105 instead of a plurality of second electromagnetic steel plates 98 constituting reactor 90 of the third embodiment. .

The second electromagnetic steel sheet 105 has the same configuration as the second electromagnetic steel sheet 98 except that a plurality of convex portions 105A and concave portions 105B are provided at both ends in the X direction.
The protrusion 105A is arranged at the same height as the first recess 93B. The plurality of convex portions 105A are arranged at intervals in the Z direction. The plurality of convex portions 105A are arranged at positions that do not interfere with the first concave portion 93B.

  The concave portion 105B is arranged at the same height as the first convex portion 93A. The concave portion 105B is disposed between adjacent convex portions 105A arranged in the Z direction.

According to the reactor 100 of the fourth embodiment, by providing a plurality of convex portions 105A and concave portions 105B at both ends of the second electromagnetic steel plate 105, the second electromagnetic steel plate 105 of the first electromagnetic steel plate 41 is provided. Can be made to function as radiation fins.
Thereby, the area functioning as a heat radiation fin can be increased, so that the heat radiation performance of the reactor 100 can be improved.

  Note that the same effect as in the fourth embodiment can be obtained when the second electromagnetic steel sheet in which the positions of the convex portions 105A and the concave portions 105B shown in FIGS. 12 and 13 are interchanged is used.

(Fifth embodiment)
The reactor 110 according to the fifth embodiment will be described with reference to FIG. The arrow shown in FIG. 14 indicates the direction in which air flows.
The reactor 110 has the same configuration as the reactor 110 except that the core portion 111 has a plurality of irregularities 113 instead of the plurality of irregularities 36 constituting the reactor 30 of the first embodiment.

The plurality of concavities and convexities 113 are first protrusions 113A arranged at intervals in the Z direction and first recesses 113B arranged between the first protrusions 113A arranged in the Z direction and adjacent to each other. And
The first protrusion 113A is configured such that the width in the Z direction increases from the inlet side (the front side of the reactor 110) to the outlet side (the rear side of the reactor 110) of the first recess 113B.
The first recess 113B is configured such that the width in the Z direction decreases from the entrance side (the front side of the reactor 110) to the exit side (the rear side of the reactor 110) of the first recess 113B.

  According to the reactor 110 of the fifth embodiment, the width in the Z direction increases from the entrance side (the front side of the reactor 110) to the exit side (the rear side of the reactor 110) of the first recess 113B. A convex portion 113A and a first concave portion 113B whose width in the Z direction decreases from the entrance side (front side of the reactor 110) to the exit side (rear side of the reactor 110) of the first concave portion 113B. Then, heat exchange with the first convex portion 113A disposed on the entrance side of the first concave portion 113B causes the heat radiation performance of the core portion 111 on the exit side of the first concave portion 113B through which the air having increased temperature flows. Can be increased.

  As described above, the preferred embodiments of the present invention have been described in detail, but the present invention is not limited to such specific embodiments, and various modifications may be made within the scope of the present invention described in the claims. Deformation and modification are possible.

DESCRIPTION OF SYMBOLS 10 ... Outdoor unit 12 ... Machine room 14, 22 ... Case 14A ... Side wall 14B ... Outside air suction port 14C ... Top plate 14D ... Opening part 16 ... Heat exchanger 21 ... Fan 24 ... Compressor 27 ... Inverter circuit 30, 80, 90, 100, 110 ... reactors 32, 91, 101, 111 ... core portions 32A, 32B ... coil housing recesses 74, 105B ... recesses 32Aa, 32Ab, 32Ba, 32Bb ... side surfaces 32Ac, 32Bc ... bottom surfaces 32C, 32D, 91A, 91B ... End 33 ... Coil 35,81 ... Lid 35a, 35b, 45a, 45b, 55a, 55b, 63a, 63b ... Face 35A, 72 ... Protrusion 36,93,113 ... A plurality of irregularities 36A, 93A, 113A ... First convex portions 36B, 51, 93B, 113B ... First concave portions 41 ... First electromagnetic steel plates 43 ... Winding portions 45 ... Connection Part 46 First part 47 Second part 48 Third part 52, 58, 66 Second concave part 55, 63 Body part 57, 65 Second convex part 71, 88 Cover part use electromagnetic steel sheets 83 ... more other irregularities 85 ... third convex portion 86 ... third recess 98,105 ... second electromagnetic steel O 1 _... central axis W1 to W4 ... width T1-T4 ... height

Claims (8)

A plurality of electromagnetic steel sheets for a core portion are laminated, and a core portion including a pair of coil housing recesses,
A coil portion wound around the core portion and partially disposed in the pair of coil receiving recesses;
With
The surface of the core portion that contacts the coil portion is a flat surface,
At the end of the core portion arranged in the width direction perpendicular to the lamination direction in which the plurality of core portion electromagnetic steel sheets are laminated, the core portion perpendicular to the lamination direction and the width direction is provided. A reactor provided with a plurality of irregularities formed by alternately arranging a plurality of first convex portions and first concave portions in a height direction. At the end portions of the plurality of electromagnetic steel sheets for the core portion arranged in the width direction, a second convex portion forming the first convex portion, a second concave portion forming the first concave portion, , Are provided alternately in the height direction,
The reactor according to claim 1, wherein the plurality of electromagnetic steel sheets for a core portion have the same shape.   The reactor according to claim 1, wherein the first recess is a flow path through which air flows, and extends in the stacking direction. The first recess is an air flow path extending in the stacking direction,
The plurality of magnetic steel sheets for a core portion include a first magnetic steel sheet, and a second magnetic steel sheet disposed between the first magnetic steel sheets adjacent to each other in the laminating direction,
At the end of the first electromagnetic steel sheet located in the width direction, a second convex part forming the first convex part and the first concave part are formed in the height direction of the core part. And the second concave portion is provided alternately,
The size of the second electromagnetic steel sheet in the width direction is set to a size such that the second electromagnetic steel sheet does not interfere with the first concave portion,
As the air flows from the inlet side of the first concave portion into which the air flows in toward the outlet side of the first concave portion from which the air flows out, the second electromagnetic steel plate disposed between the first electromagnetic steel plates adjacent to each other is arranged. 2. The reactor according to claim 1, wherein the number of electromagnetic steel sheets is reduced.   The reactor according to claim 4, wherein a plurality of concave portions and convex portions are provided at an end of the second electromagnetic steel sheet in the width direction. A lid fixed to the core is provided to cover an open end of the pair of coil receiving recesses,
On the outer surface side of the lid portion, a plurality of other irregularities extending in the stacking direction and arranged in a width direction orthogonal to the stacking direction are provided,
The plurality of other irregularities are configured by alternately arranging a plurality of third convex portions and third concave portions in the width direction. Reactor.   The reactor according to claim 6, wherein the plurality of electromagnetic steel sheets for a lid have the same shape. A reactor according to any one of claims 1 to 7, and
An inverter circuit electrically connected to the reactor,
A compressor electrically connected to the reactor;
In preparation for the machine room including
An outdoor unit in which the reactor is disposed between the inverter circuit and the compressor.

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