JPH10159738A - Flow preventing device for hermetic compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flow preventing device for a hermetic compressor which can reduce rotational load by shortening the length of a rotary shaft of a compressor and by forming a flow preventing means for effectively preventing flow so as to solve the problem that consumption input is increased by the increased weight of a rotating part to reduce the efficiency of the compressor because the rotary shaft is made so long that it can be inserted into the fixed cap. SOLUTION: In a hermetic compressor provided with a flow preventing means 100 at a predetermined position of a top cover 2 disposed on the upper side of the main body 1 of a compressor, the flow preventing means 100 is constituted by a fixed shaft 120 which is shorter than the rotary shaft 110 of the compressor and a rotary shaft 110 having a through hole 114 which is made in the predetermined position of the upper end thereof so that the fixed shaft 20 is inserted thereinto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor for compressing a refrigerant at a high temperature and a high pressure. More particularly, the present invention relates to a compressor for reducing the weight of a rotating shaft of a compressor and a rotating load, thereby improving the efficiency of the compressor. The present invention relates to a flow preventing device for a hermetic compressor which can be improved.

[0002]

2. Description of the Related Art As shown in FIG.
There is a main body 1 that forms an external appearance, and a top cover 2 that covers the upper side is disposed above the main body 1. Inside the main body 1, there is disposed a stator 3 to which an external power supply is supplied to form a magnetic field.
A rotor 5 that is rotated under the influence of a magnetic field formed on the stator 3 is provided inside the stator 3. A rotating shaft 9 that rotates in conjunction with the rotor 5 is provided inside the rotor 5. One end of the rotating shaft 9 reciprocates the rotational motion of the rotating shaft 9. A connecting rod 11 for converting to motion is provided.

A piston 13 is disposed at an end of the connecting rod 11 so as to reciprocate in conjunction with the reciprocating movement of the connecting rod 11.
A cylinder block 15 is disposed outside the piston 13 so as to guide the piston 13 to reciprocate and form a space where the refrigerant is compressed. A bearing 17 for rotatably supporting the rotating shaft 9 is provided on an outer peripheral surface of the rotating shaft 9, and the main body 1 is provided at a lower end of the rotating shaft 9.
An oil pick-up member 19 is provided at the bottom of the tank for lifting up the oil remaining there. A flow preventing means 30 is provided inside the top cover 2 so as to prevent breakage of the internal structure due to rapid flow during transfer or operation and stoppage of the compressor.

The flow preventing means 30 comprises a fixed cap 31 disposed inside the top cover 2 so that the upper end of the rotating shaft 9 is inserted therein.

[0005] Inside the lower end of the rotary shaft 9 is formed an oil hole 9a into which the oil picked up by the oil pickup member 19 flows. An oil groove 9b is formed so as to continuously raise the oil raised through 9a and prevent friction with the inner surface of the bearing 17. The oil groove 9b is provided on the outer peripheral surface of the rotating shaft 9.
The oil bank 9c which stores the oil raised along the upper side and re-rises to the uppermost end of the bearing 17 is formed in a linear form.

In the conventional hermetic compressor constructed as described above, when power is applied, a magnetic field is formed in the stator 3, and when the rotor 5 is rotated by the magnetic field formed in the stator 3, The rotation shaft 9 fixed integrally with the rotor 5 rotates. When the rotor 5 rotates, the connecting rod 11 disposed at one end of the rotor 5 linearly reciprocates, and the connecting rod 11 linearly reciprocates. When one end of the connecting rod 11 and the piston 13 disposed inside the cylinder block 15 are reciprocated linearly and driven in one direction, the refrigerant flows into the cylinder block 15. The piston 13 linearly moves in a direction opposite to the above-described direction,
The compressed refrigerant inside the cylinder block 15 has a high pressure and is discharged to the outside of the cylinder block 15 through a discharge port (not shown).

On the other hand, the oil pickup member 19 rotated in conjunction with the rotation of the rotary shaft 9 pulls up the oil that has stopped at the bottom of the main body 1, and the raised oil is formed inside the lower end of the rotary shaft 9. The oil that has risen through the oil hole 9a and is primarily supplied to the piston 13 through the connecting rod 11, and the oil that has risen through the oil hole 9 a is secondarily formed on the outer peripheral surface of the rotating shaft 9. By continuing to rise along the oil groove 9b, the oil is supplied to the inside of the bearing 17 to perform a lubricating action.

In this case, the rising oil is supplied to the rotating shaft 9.
The oil stays on the oil bank 9c machined on the outer peripheral surface of the bearing 17, and the oil rises again, rises to the upper end portion of the bearing 17, and drops down repeatedly, thereby performing the lubricating action.

On the other hand, the compressor which operates as described above has the flow preventing means 30, that is, the upper end of the rotating shaft 9 located inside the fixed cap 31. The structure is prevented from flowing and being damaged.

However, in the conventional hermetic compressor having the above-described structure, the upper end of the rotating shaft 9 is inserted into the fixed cap 31 in order to prevent the internal structure from flowing. By increasing the length of the rotating shaft 9, the weight of the rotating part increases, thereby increasing the power consumption and reducing the efficiency of the compressor.

[0011]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the rotational load by reducing the length of the rotating shaft of the compressor and simultaneously forming flow preventing means for effectively preventing the flow. Another object of the present invention is to provide a flow preventing device for a hermetic compressor.

[0012]

According to the present invention, there is provided a flow preventing device for a hermetic compressor according to the present invention, comprising: a fixed shaft formed by further reducing the length of a rotating shaft of the compressor; The fixed shaft is constituted by a rotating shaft having a shaft passage hole formed at a predetermined position at an upper end thereof so that the fixed shaft can be inserted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings (FIG. 2). For reference, the same parts as those shown in FIG. 1 are given the same reference numerals and the same names.

As shown in FIG. 2, the compressor applied to the present invention has a main body 1 forming the external appearance of the compressor, and a top cover 2 for covering the upper side is disposed above the main body 1. ing. A stator 3 is provided inside the main body 1 to supply an external power supply to form a magnetic field. Inside the stator 3, an influence of the magnetic field formed on the stator 3 is provided. Is provided. A rotating shaft 110 that rotates in conjunction with the rotor 5 is provided inside the rotor 5, and one end of the rotating shaft 110 reciprocates the rotating motion of the rotating shaft 110. A connecting rod 11 for converting to motion is provided. A piston 13 is disposed at an end of the connecting rod 11 so as to reciprocate in conjunction with the reciprocating movement of the connecting rod 11, and the piston 13 is provided outside the piston 13.
The cylinder block 15 is disposed so that the refrigerant guides the reciprocating motion and at the same time forms a space in which the refrigerant is compressed. A supporting bearing 17 is provided. At the lower end of the rotating shaft 110, an oil pickup member 19 for pulling up oil retained at the bottom of the main body 1 is disposed. A flow preventing means 100 is provided to prevent the product from being damaged by abrupt movement generated during transfer or operation and stop of the product.

The flow preventing means 100 includes a rotating shaft 11
The fixed shaft 120 is formed to have a constant length L so that the length of the top cover 2 is reduced so that the length of the top cover 2 is reduced. The rotary shaft 110 has a shaft passage hole 114 formed at a predetermined position on the upper end thereof so that the shaft 120 is inserted.

An oil hole 111 into which the oil picked up by the oil pickup member 19 flows is formed inside the lower end of the rotary shaft 110, and the oil hole 111 is formed on the outer peripheral surface of the rotary shaft 110. The oil that has been raised through the oil hole 111 is subsequently raised,
An oil groove 112 is formed to prevent friction on the inner surface of the bearing 17, and the oil raised along the oil groove 112 is stored on the outer peripheral surface of the rotating shaft 110. An oil bank 113 is formed to rise again to the uppermost end.

Next, the operation of the flow preventing device for the hermetic compressor according to one embodiment of the present invention will be described. First, when a power source (not shown) is externally applied, a magnetic field is formed in the stator 3, and when the rotor 5 is rotated by the magnetic field formed in the stator 3, the rotor 5 and the rotor 5 are rotated. The rotating shaft 110 fixed integrally rotates. When the rotor 5 rotates, the connecting rod 11 disposed at one end of the rotor 5 linearly reciprocates, and the connecting rod 11 linearly reciprocates.
When the piston 13 disposed inside the cylinder block 15 and one end of the cylinder block 15 is reciprocated linearly and driven in one direction, the refrigerant flows into the cylinder block 15. The linear movement of the piston 13 in the direction opposite to the above-described direction causes the compressed cylinder block 15 to move.
The internal refrigerant becomes high pressure and is discharged to the outside of the cylinder block 15 through a discharge port (not shown).

On the other hand, the oil pick-up member 19 rotated in conjunction with the rotation of the rotary shaft 110 pulls up the oil retained at the bottom of the main body 1, and the raised oil is formed inside the lower end of the rotary shaft 110. Rises through the oil hole 111 and is supplied to the piston 13 through the connecting rod 11,
The oil that has risen through the oil hole 111 secondarily follows the oil groove 112 formed on the outer peripheral surface of the rotating shaft 110 and then rises to supply the oil to the inside of the bearing 17 to perform a lubricating action. I do.

In this case, the rising oil is supplied to the rotating shaft 11.
The oil stays in the oil bank 113 machined on the outer peripheral surface of the bearing 17, and the oil rises again, rises to the upper end portion of the bearing 17, and drops down again, thereby performing a lubricating action.

In the hermetic compressor operating as described above, the entire length of the rotating shaft 110 is shortened, the weight of the rotating part is reduced, the operating load during the operation of the compressor is reduced, and the mechanical efficiency of the compressor is improved. You can get it. In addition, the fixed shaft 120 is disposed so as to be inserted into the upper end of the rotating shaft 110, and a sudden flow is generated by the transfer, operation, and stop operation of the compressor, and internal structures (for example, a rotor, a stator, (E.g., a rotating shaft) is prevented from being easily damaged.

[0021]

As described above, according to the flow preventing device for a hermetic compressor according to the present invention, the length of the rotating shaft is reduced by disposing the fixed shaft long inside the upper part of the main body, thereby reducing the length of the rotating shaft. Can be reduced and the rotational load can be reduced. Therefore, the efficiency of the compressor can be improved by reducing the power consumption during the operation of the compressor.

[Brief description of the drawings]

FIG. 1 is an overall longitudinal sectional view schematically illustrating a configuration of a conventional hermetic compressor.

FIG. 2 is an overall vertical sectional view schematically illustrating a configuration of a hermetic compressor according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Top cover 100 Flow prevention means 110 Rotating shaft 114 Shaft passage hole 120 Fixed shaft

Claims (2)

[Claims] 1. A closed type compressor in which a flow preventing means is provided at a predetermined portion of a top cover disposed above a main body of the compressor, wherein the flow preventing means reduces the length of a rotating shaft of the compressor. A fixed shaft formed by reducing the number of rotations, and a rotation shaft having a shaft passage hole formed in a predetermined portion at an upper end thereof so that the fixed shaft can be inserted thereinto. Anti-flow device. 2. The flow preventing device for a hermetic compressor according to claim 1, wherein the fixed shaft is fixedly disposed at a predetermined length L at a predetermined portion inside the top cover.