KR20120031622A - Motor for linear compressor - Google Patents

Motor for linear compressor Download PDF

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Publication number
KR20120031622A
KR20120031622A KR1020100093099A KR20100093099A KR20120031622A KR 20120031622 A KR20120031622 A KR 20120031622A KR 1020100093099 A KR1020100093099 A KR 1020100093099A KR 20100093099 A KR20100093099 A KR 20100093099A KR 20120031622 A KR20120031622 A KR 20120031622A
Authority
KR
South Korea
Prior art keywords
stator
shape
motor
linear compressor
inner stator
Prior art date
Application number
KR1020100093099A
Other languages
Korean (ko)
Inventor
권정기
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020100093099A priority Critical patent/KR20120031622A/en
Publication of KR20120031622A publication Critical patent/KR20120031622A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings
    • H02K1/265—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/05—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for damping motor oscillations, e.g. for reducing hunting

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The present invention relates to a motor for a linear compressor.
Embodiments of the present invention provide a linear motor including a stator composed of an outer stator and an inner stator, and a mover positioned in a gap formed between the outer stator and the inner stator; The outer surface of the inner stator is provided with a polygon, the hollow portion of the outer stator is characterized in that it has a shape corresponding to the shape of the outer surface of the inner stator.
According to the embodiment of the present invention having such a configuration, it is possible to reduce the required process and cost of processing the outer and inner surfaces of the outer stator and inner stator and the mover constituting the linear compressor motor in a circular shape, and reduce the polygon When the outer stator and the inner stator having a shape, it is possible to maintain a more constant void compared to the existing circular, and relates to a motor for a linear compressor with improved performance and control.

Description

Motor for linear compressor {Motor for linear compressor}

The present invention relates to a motor for a linear compressor. More specifically, the present invention relates to an outer stator constituting the linear compressor motor, an inner stator, and features according to the shape and shape of the outer and inner surfaces of the mover.

A motor is a device that obtains rotational power by converting electrical energy into mechanical energy. Such a motor is classified into an AC motor and a DC motor according to the type of power applied thereto. Generally, a motor is an air conditioner or a refrigerator. It is widely used for driving home appliances.

Such a motor includes a stator (a stator) and a rotor (rotor or armature, hereinafter a rotor), and a rotor is formed by a rotating magnetic field generated when current flows through the coil of the stator. It operates on the principle of generating a torque in the rotation, by using the torque that the rotor rotates by the torque as the rotational power.

Among them, the linear motor is a deformation of the magnetic field of a motor having a three-dimensional structure into a flat plate shape, and this flat-shaped mover is also placed on the upper side of the flat stator and moves linearly according to the change in the magnetic field of the stator. to be.

In recent years, the stator has a cylindrical shape having an inner stator and an outer stator, and a magnet coil for generating an induction magnet is wound and mounted on either of the inner stator and the outer stator. A compressor linear motor has been introduced in which a magnet is placed between the inner stator and the outer stator and the magnet is arranged so that the polarity of the magnet is arranged in the axial direction of the stator.

Representatively, Korean Patent No. 10-0793804 discloses a structure of a linear motor in which a stator has a cylindrical inner stator and an outer stator, and a magnet coil is wound around a bobbin and then wrapped around its outer surface with an injection molding.

In the case of such a linear motor, a magnet coil is wound around the outer circumferential surface of the bobbin of the outer stator to generate induction magnetism. Then, the core is fixed by molding using an injection mold to form the outer shape.

The mover of the linear motor is composed of a cylindrical body portion and a top portion, and a plurality of magnets are radially coupled to the outer circumferential surface of the body portion.

The outer and inner surfaces of the outer stator, inner stator, and mover constituting the conventional linear motor are formed in a cylindrical shape. Therefore, a separate process for processing the inner and outer surfaces in a circular process is required in the manufacturing process, and also required for precise processing in order to maintain accurate voids, resulting in a loss of time and cost.

An object of this embodiment is for a linear compressor having a polygonal structure in which the inner surface shape of the outer stator of the linear compressor motor, the outer surface shape of the inner stator, and the outer surface shape of the mover interposed in the gap formed between the outer stator and the inner stator are polygonal. Is to provide a motor.

In the linear compressor motor according to the present invention for achieving the above object, in a linear motor comprising a stator composed of an outer stator and an inner stator, and a mover located in a gap formed between the outer stator and the inner stator. ;

The outer surface of the inner stator is provided with a polygon, the hollow portion of the outer stator is characterized in that it has a shape corresponding to the shape of the outer surface of the inner stator.

The mover includes a body attached to a magnet to form a magnetic field, and a body part positioned in the gap, and a top formed on one side of the body part to transmit a force in one direction. And a shape corresponding to the shape of the outer surface of the inner stator.

And, the outer surface of the inner stator is characterized in that it is provided in the shape of a regular polygon.

And, the inner stator is characterized in that it is molded into a powder core.

In addition, the core of the outer stator forming the outer stator is characterized in that it is provided only by the punching operation and the lamination operation in the mold.

And, the movable portion is characterized in that it is provided only by attachment of the magnet to the outer surface of the polygon.

According to this proposed embodiment, when the linear compressor motor having the polygonal shape and structure as described above is eliminated, the process required to process the circular shape in the manufacturing process is eliminated, thereby reducing the time and cost required for the linear compressor motor. In addition, it is easy to maintain a constant void, and thus has an advantageous effect on the electrical performance and noise, etc., and the shape can be changed as needed, which also has an advantageous advantage in space utilization.

1 is a perspective view showing the configuration of a general linear compressor motor.
2 is a perspective view showing the configuration of a motor for a linear compressor according to an embodiment of the present invention.
3 is a view showing the configuration and manufacturing process of a linear compressor motor according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included in the scope of the present invention and other degenerate inventions can be easily added by adding, changing, or deleting other components. I can suggest.

That is, in the embodiment of the present invention, the motor for the linear compressor has been described for convenience of understanding and explanation, but it will be apparent that all of the other types of motors can be applied.

1 is a perspective development diagram showing a general configuration of a motor for a linear compressor.

2 is a configuration perspective view of a motor for a linear compressor having a polygonal shape according to an embodiment of the present invention.

Referring to the drawings, the linear compressor motor 1 is formed in a substantially cylindrical shape, the linear compressor motor 1 is an outer stator 100 having a hollow shape, and the hollow portion of the outer stator 100 The inner stator 200 is provided.

A certain gap is formed between the outer stator 100 and the inner stator 200, and an outer shape thereof is formed by positioning the movable member 300 in the gap 400.

In more detail, a magnet coil (not shown) is wound around the bobbin 110 formed in the outer stator 100, and the outer circumferential surface of the bobbin 110 on which the magnet coil (not shown) wound is mounted as described above. The outer stator 100 is provided through an injection operation using an injection molded product.

On the outer circumferential surface of the outer stator 100, a plurality of metal cores 120 having a 'c' shape through a subsequent work are fixed and mounted radially at a predetermined distance.

Next, an inner stator 200 is formed inside the outer stator 100 to form a path of an induction magnet.

The inner stator 200 forms a path of an induction magnet generated by a current flowing through a magnet coil (not shown) wound around the outer stator 100, and a magnet (not shown) is provided by the induction magnet. The mover 300 serves to move in the vertical direction.

Next, a constant gap exists between the outer stator 100 and the inner stator 200. Interposed between these voids is provided with a movable member 300 for linear reciprocating motion by the induction magnetic.

The mover 300 is formed in a substantially cylindrical shape, the outer surface is provided with a magnet (not shown) having a predetermined size at regular intervals, the body portion 320 is generated by the induction magnetic force, and a plurality of The ventilation hole 312 is provided with a top portion 310 formed therein.

In detail, a polygonal or circular vent hole 312 having a predetermined size is radially formed on an outer surface of the tower portion 310.

In addition, a plurality of magnets (magnets) are radially provided on an outer surface of the body part 320 of the movable part 300. Thus, a plurality of magnets are provided in the direction of 90 ° up and down with respect to the induction magnet formed by the Faraday's law of induction in the gap between the outer stator 100 and the inner stator 200. The force generates a linear reciprocating force.

The mover 300 is made of glass fiber and manufactured by injection molding.

When a current is applied to the magnet coil wound around the outer stator 100, an induced magnetism is generated in the outer stator 100 by the applied current, and the induction magnetism is formed between the inner stator 200 and the magnetic field. Will form.

The magnetic field formed as described above pulls a magnet (not shown) mounted on the outer surface of the mover 300 according to Faraday's law of induction to allow the mover 300 to move in one direction.

Subsequently, when the current applied to the magnet coil is cut off and the current is applied in the opposite direction, an induction magnetic field in a direction opposite to the magnetic field generated previously is generated. Will exercise.

Referring to FIG. 2, the inner surface of the outer stator 100 forming the air gap 400 has a polygonal structure. More precisely, the present embodiment is formed in a regular octagon.

Therefore, the shape of the outer surface of the inner stator 220 is also provided in the shape of a regular octagon corresponding to the shape of the inner surface of the outer stator 100.

The gap 400 formed between the outer stator 100 and the inner stator 200 is also formed in a band shape of a regular octagonal shape.

In addition, the shape of the outer surface of the body portion 320 of the movable member 300 interposed in the gap 400 is also provided in the shape of a regular octagon.

Eight plate-shaped magnets (not shown) having the same size are attached to the outer surface of the body part 320 inserted and positioned in the gap 400.

Since the outer surface of the body portion 320 is a regular octagonal shape, it may be inserted into the gap 400 regardless of the direction.

The linear compressor motor 1 having the shape as described above performs linear reciprocation by a predetermined cycle unit by the input power. At this time, the operation of the linear compressor motor 1 is possible even if the shape of the cavity 400 and the shape of the mover 300 is formed in a polygon having a predetermined internal angle rather than circular.

In addition, in order to reduce the side force (Side Force) according to the structural shape, it is preferable that the polygon is a regular polygonal shape.

In addition, by manufacturing the inner surface of the outer stator 100, the outer surface of the inner stator 200, and the outer surface of the mover 300 in a polygonal shape, precise processing in a circular shape to maintain a predetermined gap spacing It can save time and cost, and can solve the customer's emotional dissatisfaction due to noise, noise, vibration of the electrical characteristics caused by not maintaining a predetermined gap.

That is, when the linear compressor motor (1) having a polygonal shape according to an embodiment of the present invention, there is no need to manage a separate processing process and dimensions, so that the linear compressor motor having a certain quality and characteristics ( 1) can be provided.

3 is a view showing the configuration and manufacturing process of the linear compressor motor 1 according to the embodiment of the present invention.

First, the configuration and manufacturing process of the inner stator 200 will be described.

In the mold, the sheet of the core of the inner stator 200 having a predetermined shape is punched out, and the core of the punched sheet is laminated to manufacture the inner stator 200 having a predetermined thickness and polygonal shape. Done.

Next, the core sheet of the outer stator 100 is punched out, laminated to a predetermined thickness to include a core of the outer stator, and the outer stator core is arranged only a predetermined angle, and then the injection molding process is performed. The outer stator 100 is manufactured. At this time, since the inner surface of the inner stator 200 is mounted is a polygon, there is no need for a separate process.

On the other hand, when looking at the mover 300 interposed in the gap 400 formed between the outer stator 100 and the inner stator 200, a plate-shaped magnet having a predetermined size is provided to the A mover 300 formed of a body portion 320 having a structure and a shape corresponding to the shape and a top portion 310 having a predetermined vent hole 312 is manufactured.

In addition, the inner stator 200 may be manufactured through powder molding. Therefore, it is possible to eliminate the loss caused by stress, vortex loss, etc. generated in the punching and lamination work.

In addition, the core of the outer stator 100 may also be manufactured through powder molding similarly to the inner stator 200 to remove electrical stress due to stress stress, vortex loss, and the like generated during punching and lamination.

Linear compressor motor 1 having a polygonal shape according to an embodiment of the present invention in the manufacturing process, compared with the existing linear compressor motor 2 having a circular shape can be varied in shape and size of the effect In the manufacturing process, there is no need for a process such as machining to maintain a constant void, which has an advantage in cost and time required, and also has a regular polygonal shape to remove side force. It can be advantageous in terms of its performance.

* Explanation of symbols for main parts of the drawings
1 Motor 100 Outer Stator for Linear Compressor
200 inner stator 300 mover
400 voids

Claims (6)

A linear motor comprising a stator composed of an outer stator and an inner stator, and a mover positioned in a gap formed between the outer stator and the inner stator;
The outer surface of the inner stator is provided with a polygon, the shape of the hollow portion of the outer stator has a shape corresponding to the shape of the outer surface of the inner stator motor for a linear compressor.

The method of claim 1,
The mover is composed of a magnet (Magnet) is attached to form a magnetic field and the body portion located in the gap, and formed on one side of the body portion to transmit a force in one direction,
And the body portion has a shape corresponding to the shape of the outer surface of the inner stator.

The method according to claim 1 or 2,
The outer surface of the inner stator is a linear compressor motor, characterized in that provided in the shape of a regular polygon.

The method according to any one of claims 1 to 3,
The inner stator is a motor for a linear compressor, characterized in that molded into a powder core.

The method according to any one of claims 1 to 3,
The core of the outer stator forming the outer stator (Core) is a linear compressor motor, characterized in that is provided only by the punching operation and lamination work in the mold.

The method of claim 2,
Wherein the movable part is a linear compressor motor, characterized in that provided with only the magnet attached to the outer surface of the polygon.

KR1020100093099A 2010-09-27 2010-09-27 Motor for linear compressor KR20120031622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100093099A KR20120031622A (en) 2010-09-27 2010-09-27 Motor for linear compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100093099A KR20120031622A (en) 2010-09-27 2010-09-27 Motor for linear compressor

Publications (1)

Publication Number Publication Date
KR20120031622A true KR20120031622A (en) 2012-04-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100093099A KR20120031622A (en) 2010-09-27 2010-09-27 Motor for linear compressor

Country Status (1)

Country Link
KR (1) KR20120031622A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200094539A (en) * 2019-01-30 2020-08-07 충남대학교산학협력단 Transverse Flux Linear Oscillation Actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200094539A (en) * 2019-01-30 2020-08-07 충남대학교산학협력단 Transverse Flux Linear Oscillation Actuator

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