KR20190065904A - A Linear Compressor - Google Patents

Abstract

The present invention relates to a linear compressor and, more specifically, to a linear compressor capable of providing a dual function including guiding and center-maintaining to provide a guide function while maintaining the center by coming into contact with the internal surface of a cylinder in the middle part of a piston. Since most linear compressors have a structure including a piston operation part and a gas compression part which are separated to be operated, the structure has to be complex, noise is generated, and volume can be high. Accordingly, a linear compressor cannot be large and has to be limited to small domestic appliances, and only a one-way compressor performing absorption and discharge through only one side of a cylinder can be manufactured, which is a structural weakness. Moreover, since the linear compressor performs absorption and discharge through both sides around a piston, the compressor does not make a pulsatory motion and functions as a cushion with compressed pressure, so the compressor is simplified, has a large capacity and generates less noise.

Description

[0001] A Linear Compressor [0002]

The present invention relates to a linear compressor, and more particularly to a linear compressor provided with a dual function of a centering and guiding device that serves as a guiding function while the center portion of the piston comes in contact with the inner circumferential surface of the cylinder.

BACKGROUND ART [0002] Generally, a reciprocating compressor is constituted such that a compression space in which a working gas is sucked and discharged is formed between a piston and a cylinder, so that the piston linearly reciprocates within the cylinder and compresses the refrigerant.

In recent years, since the reciprocating compressor includes components such as a crankshaft in order to convert the rotational force of the driving motor to the reciprocating linear motion force of the piston, there is a problem that mechanical loss due to the motion conversion is largely generated. A large number of linear compressors are being developed.

In particular, the linear compressor is directly connected to a linear motor in which the piston reciprocates linearly, so that there is no mechanical loss due to the switching of the motion, so that the compression efficiency is improved and the structure is simple. Since the operation can be controlled, the noise is smaller than that of other compressors, and thus it is widely applied to home appliances such as refrigerators used indoors.

However, most of the linear compressors have a disadvantage in that the structure is complicated, noise is generated, and the volume increases because the structure is such that the piston driven portion and the gas compressing portion are operated separately.

Therefore, it can not be manufactured in a large size and can only be used in a small home appliance.

In addition, there is a structural disadvantage in that it can only be made as a one-way compressor that sucks and discharges only one side of the cylinder.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a device and a method for mounting the guide member having a radius equal to the inner diameter of the cylinder at a predetermined pitch and radius, Is required.

In order to accomplish the above-described technique, there is a need for a technique capable of automatically compensating for the amount of wear when the guide pieces are worn out due to prolonged use and the center is not held.

In this case, since the circumference of the circular shape becomes longer when the diameter becomes larger, it is necessary to compensate the wear of the larger radius in a state where the worn radius is small. This is very important because it relates to the function and performance of the sealing ring used in the sealing condition. It should also be considered in terms of illumination.

According to an aspect of the present invention, there is provided a piston in which a guide member having a radius equal to the inner diameter of the cylinder is provided in the intermediate portion of the piston with a predetermined pitch and a radius, the center being maintained by the guide members; The guide piece serves as an oil-less bearing to reduce friction. When the wearer wears for a long period of time, the shortage is slid by the spring and the magnet. [The pulling force of the magnet and the force of the coil spring cause friction The present invention is to provide a linear compressor that can compensate for the amount of wear caused by abrasion by friction so that centering and guiding functions can be performed.

Further, it is an object of the present invention to provide a linear compressor which is simple, large-capacity, and low-noise, since it is a compressor capable of sucking and discharging from both sides with respect to a piston and having no pulsation phenomenon and acting as a cushion with a pressure to be compressed.

As described above, the linear compressor of the present invention produces the following effects.

1. Large capacity is possible.

2. High energy efficiency.

3. Low noise is possible.

4. Low vibration is possible.

)는 이동방향. 화살표(→)는 유체의 이동방향.
표시 없는 사각은 공간과 상용부품임.1 is a sectional view of a linear compressor according to the present invention;
2 is a sectional view of the linear compressor according to the present invention.
3 is a partial enlarged view of the linear compressor of the present invention.
4 is a diagram showing the "a" - "a" of the linear compressor of the present invention.
5 is a perspective view of a component assembly of a linear compressor according to the present invention;
DESCRIPTION OF REFERENCE NUMERALS
01) Core core 03) Wire coil 05) Body plate A
07) Disc magnet 09) Piston 11) Body plate B
13) Suction check valve 15) Discharge check valve 25) Assembly plate
27) SEAL (seal) 31) cylinder 33) thread housing
35) permanent magnet 45) inner rib 47) outer rib
49) Central holding guide body A 51) Center holding guide body B
53) Centering guide body C
* arrow(

) Is the direction of movement. Arrow (→) indicates the flow direction of the fluid.
Square without mark is space and commercial parts.

The constitutional state of the present invention will be described in detail with reference to the drawings from FIG. 1 to FIG. 5.

The wire coil 03 is wound around the outer periphery of the core core 01 in the form of a cylindrical body in an appropriate number of turns and the cylinder 31 is fitted in the inner space of the core core 01.

On the other hand, a disc magnet 07 is provided at one side of the piston 09 at a central portion thereof; A seal housing (33) having a plurality of sealing chambers (SEAL) (27) fixed to the piston (09) by fixing the assembly plate A (25) along one outer peripheral surface of the piston (09); A permanent magnet 35 having a ball in the middle is installed on the piston 09 and the tapered surfaces of the inner rib 45 and the outer rib 47 are closely fitted to each other; A center holding guide body A 49, a center holding guide body B 51, a centering holding guide C 53 and the like are formed on the outer side of the outer rib 47 so as to form a circular ring; The inner ribs 45 and the outer ribs 47 are provided in a Y-axis symmetrical manner by fitting the tapered surfaces of the inner ribs 45 and the outer ribs 47 in close contact with each other; And the permanent magnet 35 is sandwiched therebetween.

At this time, a space is provided on the lower surface of the inner rib 45; A spring and a permanent magnet are installed in the space. The magnetic force directions of the disk magnet 07 and the permanent magnet 35 should be aligned in one direction; Preferably, the permanent magnets provided in the lower space of the inner ribs 45 are installed in opposite directions; The outer surface of the center holding guide member A 49, the center holding guide member B 51 and the center holding guide member C 53 come into contact with the inner surface of the cylinder 31 to keep the center thereof and guide the piston 09 It acts as a linear bearing, when a gap is created due to wear; The inner ribs 45 are pushed closer to each other by the attraction force and the spring force between the permanent magnets 35 and the repulsive force between the permanent magnets 35 and the permanent magnets to increase the installation radius of the outer ribs 47; The gap is compensated.

Then, the inner rib 45, the centering guide body A 49, the centering holding body B 51, the centering holding guide C 53, and the center holding guide body 53 provided between the permanent magnet 35 and the permanent magnet 35, Providing a plurality of sets of outer ribs 47 as a unit set; After installing the seal housing 33, the assembly plate 25, and the disk magnet 07 in the opposite direction of the assembly, Fitted into the internal space of the cylinder (31); A body plate A 05 and a body plate B 11 are fixedly installed on both sides of the cylinder 31; The suction check valve 13 and the discharge check valve 15 are installed on the other outer surfaces of the body plate A 05 and the body plate B 11 to complete the construction of the present invention.

The operation state of the present invention will now be described in detail with reference to the drawings from FIG. 1 to FIG. 5.

The electric current is short-circuited due to the switch and the electric pole is reversely supplied to the electric wire coil 03, the magnetic pole is reversely guided to the core core 01, .

Conversion of the direction of the power source may be reversed by configuring a circuit with a timer or a circuit receiving a signal from the sensor.

When the piston advances to one side, the suction check valve 13 on the approaching side is closed, the discharge check valve 15 is opened by pressure, the suction check valve 13 on the far side is opened, The seal 15 closes and compresses the fluid. In particular, when the coolant is used as a fluid, the selection of the material of the seal chamber 27 is important, and a material which maintains elasticity at a low temperature is used.

At this time, the pressure of the fluid to be compressed acts as a cushion, so that there is no need to provide a separate cushion device, noise is reduced, and the fluid is compressed by performing a high compression ratio.

In order to compensate for the worn amount, the circumferential length of the portion of the worn diameter is larger than the circumferential length of the remaining portion. In order to compensate the worn amount, the material of the center holding guide member A (49) 51 and the center holding guide C 53. The repulsive force between the permanent magnets 35 and the permanent magnets used for the inner ribs 45 should be stronger.

As described above, when the center retaining and guiding device are simultaneously installed on the inner surface of the cylinder and the piston 09 reciprocates by the electromagnetic field while simultaneously acting as a piston of the hydraulic cylinder, noise is reduced and a high efficiency compression ratio can be obtained. The cooling of the heat generated between the inner surface of the cylinder 31 and the center holding guide body A 49, the center holding guide body B 51 and the centering holding guide C 53 is naturally eliminated .

Therefore, it is an indispensable invention in view of the tendency of home electronic appliances where a quiet and highly efficient compressor is desperately needed.

It is to be understood that the present invention is not limited to the above-described embodiment, and that various modifications, additions, and substitutions are possible, without departing from the scope of the present invention as claimed in the following claims. Any person skilled in the art will be able to make various modifications.

Claims (4)

The wire coil 03 is wound around the core core 01 in an appropriate number of turns and the cylinder 31 is fitted in the inner space of the core core 01,
A disk magnet (07) is provided at one side of the piston (09) at a central portion; A seal housing (33) having a plurality of seal chambers (SEAL) (27) is fixed to the piston (09) by fixing the assembly plate A (25) along one outer peripheral surface of the piston (09); A permanent magnet 35 having a ball in the middle is installed on the piston 09 and the tapered surfaces of the inner rib 45 and the outer rib 47 are closely fitted to each other; A center holding guide body A 49, a center holding guide body B 51, a centering holding guide C 53 and the like are formed on the outer side of the outer rib 47 so as to form a circular ring; The inner ribs 45 and the outer ribs 47 are provided in a Y-axis symmetrical manner by fitting the tapered surfaces of the inner ribs 45 and the outer ribs 47 in close contact with each other; Means for fitting the permanent magnet 35,
Means provided with a coil spring and a permanent magnet in the lower space of the inner rib 45,
The body plate A (05) and the body plate B (11) are fixedly installed on both sides of the cylinder 31; Characterized in that a suction check valve (13) and a discharge check valve (15) are provided on the other outer surface of the body plate (A) (05) and the body plate (B) The seal ring according to claim 1, wherein a sealing chamber (SEAL) (27), in which a seal housing (33) having a plurality of sealing chambers (27) Features a linear compressor. The bearing device according to claim 1, wherein the centering guide body (49), the centering holding guide body (51), and the centering holding guide body (53) Linear compressors featured in installed. The linear compressor according to claim 1, wherein the material of the piston (09) and the cylinder (31) is made of magnesium.

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