KR20040040204A - Hermetic compressor with accumulator - Google Patents

Abstract

PURPOSE: A hermetic compressor having an accumulator is provided to reduce the number of parts by accelerating vaporization of an accumulator and decreasing a temperature of a compressor. CONSTITUTION: A compressor casing(61) has a space for receiving a compressing part compressing a refrigerant and an electric motor part providing driving force to the compressing part. The compressor casing has a flat part(62) on one side. An accumulator casing(71) has a space for receiving a refrigerant, and contacts with the compressor casing through a compressor casing contact part(72) to transfer heat. A heat transfer accelerating part(75) is interposed between the flat part of the compressor casing and the compressor casing contact part of the accumulator casing for accelerating heat transfer.

Description

Hermetic compressor with accumulator {HERMETIC COMPRESSOR WITH ACCUMULATOR}

The present invention relates to a hermetic compressor having an accumulator, and more particularly, to reduce the temperature of the compressor body and to promote the vaporization of the accumulator, which can extend the service life and reduce the number of parts to be inserted. It relates to a hermetic compressor having an accumulator which enables one configuration.

1 is a longitudinal sectional view of a hermetic compressor with a conventional accumulator, and FIG. 2 is a plan view of the compressor of FIG. As shown in these figures, the hermetic compressor including the accumulator includes a compressor main body 11 for compressing and discharging the sucked refrigerant and a gaseous state of the compressor main body 11 disposed outside the compressor main body 11. An accumulator 41 is provided for allowing refrigerant to be sucked in.

The compressor main body 11 includes a compressor casing 12 that forms an airtight receiving space therein, a compression part 22 that is disposed inside the compressor casing 12 and compresses the refrigerant sucked from the accumulator 41; And an electric motor portion 32 for providing a driving force to the compression portion 22.

The compression part 22 is comprised from the cylinder 23 which forms the compression space of a refrigerant | coolant inside, and the roller 25 which is arrange | positioned rotatably in the cylinder 23, and compresses a refrigerant | coolant.

The electric motor part 32 includes a stator 34 fixedly disposed in the compressor casing 12, a rotor 36 rotatably disposed in the stator 34, and a rotor 36. In addition to being rotatably coupled to the axial center as well as a rotating shaft 38 is formed with an eccentric portion (39) to eccentrically move the roller (25).

The accumulator 41 includes an accumulator casing 42 forming an accommodating space therein, an inlet pipe 44 coupled to the refrigerant at one end along the longitudinal direction of the accumulator casing 42, and the accumulator casing 42. It is provided with the outlet pipe 46 is coupled to the other end of the refrigerant to flow out. Outflow pipe 46 is extended so that the end is located in the inner upper region of the accumulator casing 42 so that the gaseous refrigerant in the refrigerant inside the accumulator casing 42 can flow out, the other end of the compressor casing 12 It is installed in communication with the inside of.

On the other hand, the support bracket 13 is integrally formed on the upper side of the compressor casing 12 so that the accumulator casing 42 can be fixed in contact, and the accumulator casing 42 is in contact with the support bracket 13. One end of the strap 15 for fixing the accumulator 41 is coupled to one side of the support bracket 13, and the other end of the strap 15 via the circumferential surface of the accumulator casing 42 is fixed to the other side of the support bracket 13. It is fastened by 17).

By this configuration, the refrigerant compressed by the compression unit 22 is radiated in the condenser (not shown) and is cooled in the evaporator and then introduced into the accumulator casing 42 through the inlet pipe 44. The introduced coolant is placed in the upper upper region of the accumulator casing 42 by the specific gravity difference, and the liquid refrigerant is located in the bottom region. On the other hand, the refrigerant in the liquid state is a gaseous state inside the accumulator casing 42, the gaseous refrigerant is sucked into the compression unit 22 through the outlet pipe 46, compressed and discharged to repeat the inside of the refrigeration cycle Cooling is performed while circulating.

By the way, in the hermetic compressor provided with such an accumulator, there exists a problem that component deterioration is accelerated | stimulated by the heat generation at the time of the drive of the compression part 22 and the electric motor part 32. As shown in FIG.

In addition, the accumulator casing 42 is not only determined in size by the amount of gas refrigerant flowing through the inlet pipe 44 and the amount of refrigerant vaporized inside the accumulator casing 42, but also by the compressor casing to fix the accumulator 41. Since the accumulator 41 is fixed to the strap 15 and the fixing bolt 17 via the support bracket 13 between the parts 12, the compact configuration is difficult and the number of components is increased. There is this.

Accordingly, an object of the present invention is to provide a hermetic compressor with an accumulator capable of lowering the temperature of the compressor body and promoting evaporation of the accumulator, extending the service life, reducing the number of parts to be put in, and allowing a compact configuration. To provide.

1 is a longitudinal sectional view of a hermetic compressor with a conventional accumulator;

2 is a plan view of the compressor of FIG.

3 is a longitudinal sectional view of a hermetic compressor having an accumulator according to an embodiment of the present invention;

4 is a plan view of the compressor of FIG.

5 is a plan view of a hermetic compressor with an accumulator according to another embodiment of the present invention;

6 is a plan view of a hermetic compressor having an accumulator according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

11: compressor main body 12: compressor casing

22 compression unit 32 electric motor unit

51: accumulator casing 52: compressor casing contact

53: weld

According to the present invention, the compressor casing for forming a receiving space for compressing the refrigerant therein and the receiving space of the electric motor unit for providing a driving force to the compression unit; It is achieved by a hermetic compressor having an accumulator comprising an accumulator casing having a compressor casing contact portion in contact with the outer surface of the compressor casing so as to allow mutual heat transfer.

Here, the compressor casing contact portion is preferably configured to be in surface contact with the compressor casing.

The compressor casing is formed with an uneven portion to increase the heat transfer surface area, and the compressor casing contact portion is effective to be engaged with the uneven portion.

The accumulator casing is preferably welded integrally to the compressor casing.

It is effective to further include a heat transfer promoting member interposed between the compressor casing and the mutual contact area of the compressor contact portion to promote heat transfer.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

3 is a longitudinal cross-sectional view of a hermetic compressor including an accumulator according to an embodiment of the present invention, and FIG. 4 is a plan view of the compressor of FIG. 3. The same and equivalent parts as those described above and shown in the drawings will be described with the same reference numerals for convenience of description. As shown in these figures, the hermetic compressor including the accumulator includes a compressor casing 12 which forms a housing space of the compression unit 22 and the electric motor unit 32 therein, and a storage space of the refrigerant therein. And an accumulator casing 51 which is in surface contact with the compressor casing 12 to allow mutual heat transfer with the compressor casing 12.

The compressor casing 12 has a cylindrical shape, and the compressor casing contact portion recessed inward to have the same curvature as the curvature of the compressor casing 12 to be in surface contact with the compressor casing 12 on one side of the accumulator casing 51. 52 is formed. Both sides of the compressor casing contact 52 are welded 53 by spot welding or CO ₂ welding such that the accumulator casing 51 can be integrally coupled to the compressor casing 12. ) Are formed respectively.

By such a configuration, the gaseous refrigerant inside the accumulator casing 51 is sucked into the compression section 22 through the outlet pipe 46, compressed and discharged. At this time, the compressor casing 12 and the accumulator casing 51 are heat-exchanged through the areas in contact with each other. Accordingly, the temperature of the compressor casing 12 is lowered, thereby suppressing the forced deterioration due to the high temperature of the internal components. The accumulator casing 51 is heated to promote vaporization of the internal refrigerant, thereby accumulating the accumulator casing 51 relatively. It can be reduced in size, allowing a compact configuration. Meanwhile, the refrigerant discharged from the compressor generates heat in the condenser and performs cooling in the evaporator, and then repeats the process of flowing into the accumulator 41 through the inlet pipe 44.

5 is a plan view of a hermetic compressor with an accumulator according to another embodiment of the present invention. As shown, the hermetic compressor including the accumulator includes a compressor casing 61 for forming a receiving space of the compression unit 22 and the electric motor unit 32 therein, and a receiving space for the refrigerant therein. One side is configured to include an accumulator casing (71) which is in surface contact with the compressor casing (61) so that heat transfer is possible.

A flat portion 62 is formed at one side of the compressor casing 61, and a compressor casing contact portion 72 having a flat surface is formed at one side of the accumulator casing 71 so as to be in surface contact with the flat portion 62. have. Between the flat portion 62 and the compressor casing contact portion 72, a heat transfer promoting member such as a thermal grease or the like, so as to increase the thermal conductivity by removing the air layer between the flat portion 62 and the compressor casing contact portion 72. (75) is interposed.

6 is a plan view of a hermetic compressor having an accumulator according to another embodiment of the present invention. As shown, the hermetic compressor having the accumulator has an uneven portion having an uneven section so as to form a receiving space of the compression unit 22 and the electric motor unit 32 therein and increase the heat transfer surface area at one side thereof. An accumulator casing having a compressor casing 81 having an 82 formed therein, and an accommodating casing having a compressor casing contact portion 92 in surface contact with the uneven portion 82 so as to form a receiving space therein and to facilitate heat transfer on one side thereof. It consists of 91.

A heat transfer promoting member 95 is interposed between the uneven portion and the compressor casing contact portion 92 so as to promote heat transfer, and the compressor casing 81 and the accumulator casing 91 are provided at both regions of the compressor casing contact portion 92. Each weld 94 is formed to be integrally coupled to each other.

In the above-described and illustrated embodiments, the case in which the outer surface of the compressor casing in contact with the accumulator casing is configured to have an outwardly convex surface or a flat or uneven surface is described as an example, but the compressor casing in contact with the accumulator casing is described. The outer surface of the accumulator may be concave and the compressor casing contact portion of the accumulator casing may be convex correspondingly.

As described above, according to the present invention, by providing a compressor casing to form a receiving space of the compression unit and the electric motor unit, and an accumulator casing in heat transfer contact with the outer surface of the compressor casing to lower the temperature of the compressor casing and accumulate the casing temperature By increasing the pressure of the internal components of the compressor casing, it is possible to suppress the forced deterioration due to the high temperature and to promote the vaporization of the refrigerant inside the accumulator casing, thereby providing a hermetic compressor having an accumulator capable of improving performance. .

In addition, since the compressor casing and the accumulator casing are mutually in surface contact, unlike the conventional case where the support bracket, the strap and the fixing bolt are used to fix the accumulator casing, the use of these can be eliminated, thereby reducing the number of input parts and the size. It is possible to reduce the size of the accumulator casing by promoting vaporization, thereby providing a hermetic compressor having an accumulator having a compact configuration.

Claims (5)

A compressor casing which forms an accommodation space for compressing a refrigerant therein and an accommodation space of an electric motor unit for providing a driving force to the compression unit; And an accumulator casing in which a compressor casing contact portion is formed in contact with an outer surface of the compressor casing so as to allow mutual heat transfer. The method of claim 1, And the compressor casing contact portion is in surface contact with the compressor casing. The method of claim 1, The compressor casing is formed with a concave-convex portion so as to increase the heat transfer surface area, the compressor casing contact portion is formed to be engaged with the concave-convex portion, hermetic compressor with an accumulator. The method according to any one of claims 1 to 3, The accumulator casing is integrally welded to the compressor casing, the hermetic compressor having an accumulator. The method according to any one of claims 1 to 4, And a heat transfer facilitating member interposed between the compressor casing and the mutual contact area of the compressor contact portion to promote heat transfer.