KR100202881B1 - Hermetic Compressor Stator Assembly Fixture - Google Patents

Abstract

The present invention relates to a hermetic compressor stator assembly jig for application to an assembling process of a hermetic compressor used in a refrigerator.

The present invention provides a jig for mounting the stator (15) while maintaining a constant air gap with the rotor (16) in the motor of a hermetic compressor consisting of the stator (15) and the rotor (16). An inner groove 31a having a predetermined diameter is formed inside the body 31 in an integrated assembly consisting of a gap gauge 33 and the like, and the handle 32 in the inner groove 31a. A first jig (30) formed to communicate with the through hole (32a) to communicate with; The second jig 40 having an outer end portion 41a having a predetermined diameter is formed on the outer circumferential surface of the body 41 in an integrated assembly composed of a body 41, a handle 42, a gap gauge 43, and the like. ).

Accordingly, the present invention has the effect of preventing assembly defects due to air gap unevenness in the assembly process of the hermetic compressor having a means for sucking and discharging the refrigerant in the sealed case.

Description

Hermetic Compressor Stator Assembly Fixture

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly mechanism of a compressor, and more particularly, to a hermetic compressor stator assembly jig for applying to an assembling process of an hermetic compressor having a means used for a refrigerator and having a means for sucking and discharging a refrigerant inside the hermetic case. will be.

In a refrigerator, a compressor is a means for converting rotational force due to electrical energy into mechanical energy of reciprocating motion, and a refrigerant having a low boiling point is brought into a high pressure state as it passes through the compressor. Again, the high pressure refrigerant is cooled in the condenser to become liquid, and once this liquid refrigerant is gasified in the cooler, one refrigeration cycle is completed.

1 is a block diagram showing the inside of a hermetic compressor.

The compressor 10 has a structure in which a suction pipe and a discharge pipe of a refrigerant are bonded to the outside of the sealed case 11 and the high pressure generating means 13 is mounted therein. The high-pressure generating means 13 is composed of a cylinder, a piston, a valve, a discharge muffler, and the like, which are integrally assembled, and are connected to a motor unit and a shaft 12 installed at a lower portion thereof.

In operation, a shaft 12 rotated by a motor induces the cam motion of the eccentric cam on its upper part, the cam motion again reciprocates the piston in the cylinder through the connecting rod, and the valve is the pressure of both sides formed at this time. It is passively opened and closed by a car to move the refrigerant in one direction. Accordingly, the refrigerant introduced through the suction pipe is filled into the sealed case 11 and then introduced into the cylinder through a suction muffler (not shown), and the refrigerant compressed in the cylinder passes through the discharge muffler (not shown) and passes through the discharge pipe. It is sent to a condenser (not shown).

In this case, a single phase induction motor is usually used in a refrigerator to provide electrical energy that sustains the flow of the refrigerant in the refrigeration cycle. FIG. 1 shows the arrangement state of the stator 15 and the rotor 16 of such an induction motor. The stator 15 has a structure in which a plurality of layers of silicon steel sheets punched with a plurality of slots 15a are laminated, and the rotor Numeral 16 denotes a structure in which a plurality of current outlets are formed by die casting aluminum into a tubular shape.

2 is a perspective view showing the stator and its assembly jig together.

The stator 15 is assembled when the main coil 18, which is the winding winding, and the auxiliary coil 19, which is the winding winding, are kept insulated and wound in a patten form. In FIG. 1, the rotor 16 is press-fitted to the shaft 12 and rotatably mounted on the frame 14, and then the stator 15 is attached to the frame 14 to maintain a constant air gap with the rotor 16. Once installed, assembly of the motor unit is completed.

At this time, the assembly jig 20 composed of the body 21, the handle 22, the gap gauge 23 is used to maintain the air gap, some of the plurality of gap gauge 23 is a thin plate twisted Since the stator 15 is easily biased or folded, it may not be possible to maintain a constant air gap.

As a result of poor assembly of the motor unit, the starting and operating characteristics of the motor may be changed, and the output may be reduced, and in some cases, the motor may be burned out.

Accordingly, the present invention is to solve the above problems, a sealed compressor stator assembly jig for preventing assembly defects due to air gap unevenness in the assembly process of the hermetic compressor having a means used for a refrigerator and having a suction and discharge inside the sealed case. Its purpose is to provide.

1 is a block diagram showing the interior of the hermetic compressor.

2 is a perspective view showing the stator and its assembly jig together.

Figure 3 is a front view showing separately the assembly jig according to the present invention.

4 is a front view showing a state used for assembling the stator of FIG.

* Explanation of symbols for main parts of the drawings

10 compressor 11 sealed case

12 shaft 13 high pressure generating means

14 frame 15 stator

15a: Slot 16: Lot

17: bolt 18: main coil

19: auxiliary coil 20: assembly jig (conventional)

21,31,41: Body 22,32,42: Handle

23,33,43: gap gauge 30: first fixture

31a: inner groove 32a: through hole

40: second jig 41a: outer end

In order to achieve this object, the present invention provides a jig in which the stator 15 is mounted while maintaining a constant air gap with the rotor 16 in the motor unit of the hermetic compressor consisting of the stator 15 and the rotor 16: In an integrated assembly composed of a body 31, a handle 32, a gap gauge 33, an inner groove 31a having a predetermined diameter is formed inside the body 31, and the inner groove 31a. A first jig 30 formed to communicate with the through hole 32a communicating from the handle 32 to the handle 32; The second jig 40 having an outer end portion 41a having a predetermined diameter is formed on the outer circumferential surface of the body 41 in an integrated assembly composed of a body 41, a handle 42, a gap gauge 43, and the like. It provides a sealed compressor stator assembly jig comprising a).

At this time, the first jig 30 and the second jig 40 are loosely fitted to each of the inner groove 31a and the outer end 41a of each of the gap gauges 33 and 43 with the same diameter and concentricity. It is arranged on the circumference of.

Example

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

3 is a front view showing the assembly jig separately according to the present invention.

The present invention is applied to the jig so that the stator 15 is mounted while maintaining a constant air gap with the rotor 16 in the motor unit of the hermetic compressor consisting of the stator 15 and the rotor 16. While the assembly jig 20 (FIG. 2) is used, the present invention uses the first jig 30 and the second jig 40 in combination.

Referring to FIG. 2, the assembly tool 20 of the related art is composed of a body 21, a handle 22, and a gap gauge 23, and the body 21 and the handle 22 are predetermined. It is formed in a disk shape having a diameter and are integrally joined to each other, and the gap gauge 23 is fixed to a plurality of grooves formed at equal intervals on the outer circumferential surface of the body 21 by bolts or the like.

At this time, the first jig 30 of the present invention is an inner groove having a predetermined diameter inside the body 31 in an integrated assembly composed of a body 31, a handle 32, a gap gauge 33, and the like. 31a is formed, and the through hole 32a communicating from the inner groove portion 31a to the handle 32 is formed to communicate with each other.

The structure of the body 31, the handle 32, the gap gauge 33 and the like is the same as the conventional one, but further includes an inner groove 31a and a through hole 32a.

The inner groove 31a is processed by grinding such as honing to maintain a predetermined surface roughness where the sliding contact is generated. The body 31 may be molded using a pipe material, in which case, the man-hours due to the pores of the inner groove 31a may be reduced.

The through hole 32a is formed to a size through which the handle 32 of the second jig 40 to be described later can pass. Since the through hole 32a does not need additional grinding processing, the handle 32 may use a pipe material as it is.

Further, the second jig 40 of the present invention has an outer side having a predetermined diameter on the outer circumferential surface of the body 41 in an integrated assembly composed of a body 41, a handle 42, a gap gauge 43, and the like. End portion 41a is formed.

Although the structure of the said body 41, the handle 42, the clearance gauge 43, etc. is the same as the conventional one, the outer end part 41a is further provided. The gap gauge 43 is not fixed to a plurality of grooves formed at equal intervals on the outer circumferential surface of the body 21 (FIG. 2), but fixed with bolts or the like so as to protrude on the outer circumferential surface of the body 41. .

The outer end portion 41a is subjected to grinding processing such as honing to maintain a predetermined surface structure as a sliding contact with the inner groove portion 31a described above. The inner groove portion 31a and the outer end portion 41a allow the respective body 31 and 41 to be detachably mounted by hand and maintain a fitting tolerance such that there is no shaking during mounting, and the vertical length thereof is too small. (E.g., 10 mm or more).

At this time, the first jig 30 and the second jig 40 are loosely fitted to each of the inner groove 31a and the outer end 41a of each of the gap gauges 33 and 43 with the same diameter and concentricity. It is arranged on the circumference of.

Even if the gap gauges 33 and 43 are fixed on the circumference having the same diameter, the first jig 30 and the second jig (3) do not interfere with each other by the uneven structures of the inner groove 31a and the outer end 41a. 40) is integrated as shown in FIG. 4 described later.

4 is a front view showing a state used for assembling the stator of FIG. 3, and reference numerals not shown refer to FIG.

First, the rotor 16 is pressed into the shaft 12 and the assembly is rotatably mounted on the frame 14. Next, the first jig 30 and the second jig 40 of the present invention are shown when the main coil 18 of the winding winding and the auxiliary coil 19 of the starting winding are wound on the stator 15 while maintaining insulation. Combine them together as in

At this time, the gap gauge 33 of the first jig 30 and the gap gauge 43 of the second jig 40 are alternately arranged on the concentric circumference, and the handle 42 of the second jig 40. Is exposed to the outside of the handle 32 of the first jig (30). This state is maintained even after the assembly of the first jig 30 and the second jig 40 is mounted on the outer circumferential surface of the rotor 16.

Subsequently, when the stator 15 is pushed in from the handle 42 of the second jig 40, the stator 15 is mounted while wrapping the rotor 16 on the frame 14, and the two kinds of gap gauges 33 and 43 are mounted thereon. ), The air gap is maintained accurately. When the worker tightens the bolt 17 and pulls out the first jig 30 and the second jig 40 in order, the work is completed.

As such, when the first jig 30 and the second jig 40 are used at the same time, the frictional resistance of the gap gauges 33 and 43 is slightly increased, but distortion, folding, and abnormal abrasion occur in any one portion. Can be prevented.

As described through the above embodiments, the hermetic compressor stator assembly jig of the present invention is used in a refrigerator and has an effect of preventing assembly defects due to air gap unevenness in the assembling process of the hermetic compressor having a means for sucking and discharging refrigerant inside the hermetic case. There is.

While the invention has been shown and described with reference to certain preferred embodiments, it will be appreciated that the invention can be modified and modified in various ways without departing from the spirit or scope of the invention as set forth in the claims below. One of ordinary skill in the art will readily know.

Claims (2)

In the jig for allowing the stator 15 to be mounted while maintaining a constant air gap with the rotor 16 in the motor unit of the hermetic compressor consisting of the stator 15 and the rotor 16: the body 31 and the handle 32. An inner groove 31a having a predetermined diameter is formed inside the body 31 in an integrated assembly composed of the gap gauge 33 and the like, and communicates from the inner groove 31a to the handle 32. A first jig 30 formed to communicate with the through hole 32a; The second jig 40 having an outer end portion 41a having a predetermined diameter is formed on the outer circumferential surface of the body 41 in an integrated assembly composed of a body 41, a handle 42, a gap gauge 43, and the like. Sealed compressor stator assembly jig characterized in that it comprises a). According to claim 1, wherein the first jig 30 and the second jig 40, the respective gap gauges 33 and 43 are loosened when the respective inner groove 31a and the outer end 41a is loosely fitted A hermetic compressor stator assembly jig, characterized in that it is arranged on the same diameter and concentric circumference.