CN2826011Y

CN2826011Y - Rotary compressor

Info

Publication number: CN2826011Y
Application number: CN 200520027045
Authority: CN
Inventors: 李元鹤; 河宗勋
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2005-08-18
Filing date: 2005-08-18
Publication date: 2006-10-11
Anticipated expiration: 2015-08-18

Abstract

The utility model discloses a rotary compressor which comprises a closed container composed of a shell, an upper cover and a lower cover, an electric mechanical part composed of a stator and a rotator, and a compressing mechanical part composed of a cylinder, an upper part and a lower part bearings, a crank shaft and a rolling ring, wherein a concave ring is formed on one part where the lower end of the upper part bearing is arranged on the peripheral wall of the shell along the periphery of the shell, and a plurality of hemispherical concave parts are formed at equal intervals along the periphery of the shell on one part where the upper end of the upper part bearing is arranged; a plurality of concave grooves corresponding to the concave parts are formed on the upper part of the outer peripheral surface of the upper part bearing. The rotary compressor provided by the utility model uses the concave parts and the concave ring which are formed on the outer peripheral wall of the shell and the concave grooves formed on the outer peripheral wall of the upper part bearing to fix the compressing mechanical part; as a welding method is not used, the problem of the residue of welding slag can not occur; in addition, as hot deformation does not occur on the compressing mechanical part, the leakage problem of cooling mediums can not occur, and accordingly, the perfect performance of the compressor can be ensured.

Description

A kind of rotary compressor

Technical field

The utility model relates to a kind of rotary compressor, relates to particularly that a kind of can to reduce thermal distortion and welding slag that compression mechanical portion produces residual, thereby can guarantee the rotary compressor that its performance is intact.

Background technique

In general, compressor is a kind of machine of compressed fluid.This compressor is by the seal container with certain inner space, is installed in the electromechanical part that can produce driving force in the seal container and can utilizes the driving force of electromechanical part and the compression mechanical portion of compressed fluid constitutes.Fig. 1 is the rotary compressor longitudinal construction sectional view of prior art.As shown in Figure 1, the seal container of the rotary compressor of this prior art equidistantly is formed with the cylindrical housing 3 of three welding holes 7 and loam cake 4 and lower cover 5 by the bottom along its circumference and constitutes.One side of shell 3 is provided with refrigerant import 1, and the center portion of loam cake 4 then is provided with refrigerant exit 2.The electromechanical part on seal container top mainly by be fixed on cylindrical housing 3 inwalls stator 11 and the center of stator 11 and can by and stator 11 between the rotor 12 that is rotated of electromagnetic action form.40 of compression mechanical portion that are positioned at the seal container bottom mainly comprise cylinder 45 and are installed in the upper bearing 42 and the lower bearing 43 of cylinder 45 upper and lower end faces respectively.Bent axle 31 runs through the center of rotor 12 and cylinder 45, and it can together rotate with rotor 12, thereby the rotating force that electromechanical part produces can be passed to compression mechanical portion 40.The bottom of bent axle 31 is formed with eccentric part 31a, the outside of eccentric part 31a then be with can be rotated in the inside cavity of cylinder 45 and compressible refrigerant roll the ring 36.Do not overlap with the rotating center of bent axle 31 owing to roll ring 36 center of gravity, thus the power energy imbalance can appear during high speed rotating when bent axle 31 in compressor, thus become the vibrative main cause of compressor.To load onto equilibrium block 6 and come trimming moment in order to address this problem usually to add in the upper end portion of rotor 12.But there is following point in the rotary compressor of this prior art: compression mechanical portion 40 is to adopt three spot welding connections by three welding holes 7 that form on shell 3 peripheral wall shell 3 and upper bearing 42 directly to be welded together, because the input of the welding heat of this connecting means is bigger, thereby upper bearing 42 and easily generation thermal distortion of cylinder 45, thereby might cause problems such as coolant leakage and moving element friction, therefore can influence the performance of compressor.In addition, this welding method also is easy to make welding slag to remain in the inside of compressor and influence its life-span, and welding process also can cause certain pollution to environment.

Summary of the invention

In order to address the above problem, the purpose of this utility model is to provide a kind of thermal distortion and coolant leakage that can reduce compression mechanical portion, and can prevent that welding slag from remaining in its inner rotary compressor.

In order to achieve the above object, the rotary compressor that provides of the utility model comprises seal container, electromechanical part and compression mechanical portion; Wherein seal container is made of cylindrical housing and loam cake and lower cover, and a side of shell is provided with the refrigerant import, and the center portion of loam cake then is provided with refrigerant exit; Electromechanical part is positioned at the top of seal container, mainly by be fixed on the outer casing inner wall stator and the center of stator and can by and stator between the rotor that is rotated of electromagnetic action form; Compression mechanical portion is positioned at the bottom of seal container, mainly comprise cylinder, respectively be installed in the cylinder upper and lower end face upper bearing and lower bearing, run through the center of rotor and cylinder, the bottom is formed with eccentric part, can together rotate with rotor, thereby the rotating force that electromechanical part produces can be passed to the bent axle of compression mechanical portion and be enclosed within the outside of bent axle lower eccentric portion, and can in cylinder, rotate the ring that rolls with compression refrigerant; The position that the upper bearing lower end is installed on the described shell peripheral wall has been formed along a circumference thereof a scrobicular ring, the position that the upper bearing upper end is installed has been formed along a circumference thereof a plurality of depressed parts, and the top of upper bearing outer peripheral surface then is formed with the corresponding hollow slot of a plurality of and above-mentioned depressed part.

Described hollow slot is symmetrically formed the outer peripheral surface top at upper bearing.

Described scrobicular ring and depressed part utilize process for stamping to form.

The rotary compressor that the utility model provides is to utilize the hollow slot that forms on the scrobicular ring that forms on the shell peripheral wall and depressed part and the upper bearing outer peripheral surface to fix compression mechanical portion, owing to do not adopt welding method, thereby the welding slag residue problem can not occur.In addition, because thermal distortion does not appear in compression mechanical portion, thereby the coolant leakage problem can not occur, thereby the performance that can guarantee compressor is intact.

Description of drawings

Below in conjunction with the drawings and specific embodiments the rotary compressor that the utility model provides is elaborated.The parts identical with prior art use identical symbol, and omit its explanation of carrying out.

Fig. 1 is the rotary compressor longitudinal construction sectional view of prior art.

The rotary compressor substructure longitudinal sectional view that Fig. 2 provides for the utility model.

The rotary compressor middle and upper part bearing structure plan view that Fig. 3 provides for the utility model.

Embodiment

As Fig. 2, shown in Figure 3, the rotary compressor that the utility model provides comprises seal container, electromechanical part and compression mechanical portion; Wherein seal container is made of cylindrical housing 3 and loam cake 4 and lower cover 5, and a side of shell 3 is provided with refrigerant import 1, and the center portion of loam cake 4 then is provided with refrigerant exit 2; Electromechanical part is positioned at the top of seal container, mainly by be fixed on shell 3 inwalls stator 11 and the center of stator 11 and can by and stator 11 between the rotor 12 that is rotated of electromagnetic action form; Compression mechanical portion 50 is positioned at the bottom of seal container, mainly comprise cylinder 55, respectively be installed in cylinder 55 upper and lower end faces upper bearing 52 and lower bearing 53, run through the center of rotor 12 and cylinder 55, the bottom is formed with eccentric part 31a, can together rotate with rotor 12, thereby the rotating force that electromechanical part produces can be passed to the bent axle 31 of compression mechanical portion 50 and be enclosed within the outside of bent axle 31 31a of lower eccentric portion, and can in cylinder 55, rotate with rolling of compression refrigerant and encircle 36; The position that upper bearing 52 lower ends are installed on described shell 3 peripheral wall has been formed along a circumference thereof a scrobicular ring 8, the position that upper bearing 52 upper ends are installed has been formed along a circumference thereof a plurality of depressed parts 9, and the top of upper bearing 52 outer peripheral surfaces then is formed with a plurality of and above-mentioned depressed part 9 corresponding hollow slots 10.Described hollow slot 10 is symmetrically formed the outer peripheral surface top at upper bearing 52, and scrobicular ring 8 and depressed part 9 then utilize process for stamping to form.When the assembling the utility model provide rotary compressor the time, the position that upper bearing 52 lower ends at first are installed on shell 3 utilizes process for stamping to form scrobicular ring 8, the upper bearing 52 that then outer peripheral surface top is formed with a plurality of hollow slots 10 is put into the inside of shell 3, and make its bottom margin contact on scrobicular ring 8, on shell 3, carry out punching press from the outside and form the depressed part 9 that matches with hollow slot 10 subsequently with above-mentioned hollow slot 10 corresponding positions, so just can be with compression mechanical portion 50 fix in position.In addition, owing to compression mechanical portion 50 is to utilize scrobicular ring 8 and depressed part 9 to be fixed on the inside of shell 3, thereby compare it with three spot welding connections of prior art and can not produce welding slag, thereby can not there be the harmful effect that brings by welding, and can enhance productivity, and can not make compression mechanical portion 50 produce thermal distortions because of being heated evenly yet, thus the coolant leakage problem can not appear, therefore can guarantee that the performance of compressor is intact.

Claims

1, a kind of rotary compressor comprises seal container, electromechanical part and compression mechanical portion; Wherein seal container is by cylindrical housing (3) and loam cake (4) and lower cover (5) formation, and a side of shell (3) is provided with refrigerant import (1), and the center portion of loam cake (4) then is provided with refrigerant exit (2); Electromechanical part is positioned at the top of seal container, mainly by be fixed on the stator (11) on shell (3) inwall and be positioned at stator (11) the center and can by and stator (11) between the rotor (12) that is rotated of electromagnetic action form; Compression mechanical portion (50) is positioned at the bottom of seal container, mainly comprise cylinder (55), respectively be installed in cylinder (55) upper and lower end face upper bearing (52) and lower bearing (53), run through the center of rotor (12) and cylinder (55), the bottom is formed with eccentric part (31a), can together rotate with rotor (12), the rotating force that thereby electromechanical part can be produced pass to the bent axle (31) of compression mechanical portion (50) and be enclosed within the outside of bent axle (31) lower eccentric portion (31a), and can rotate in cylinder (55) and roll ring (36) with compression refrigerant; It is characterized in that: the position that upper bearing (52) lower end is installed on described shell (3) peripheral wall has been formed along a circumference thereof a scrobicular ring (8), the position that upper bearing (52) upper end is installed has been formed along a circumference thereof a plurality of depressed parts (9), and the top of upper bearing (52) outer peripheral surface then is formed with the corresponding hollow slot of a plurality of and above-mentioned depressed part (9) (10).

2, rotary compressor according to claim 1 is characterized in that: described hollow slot (10) is symmetrically formed the outer peripheral surface top at upper bearing (52).

3, rotary compressor according to claim 1 is characterized in that: described scrobicular ring (8) and depressed part (9) utilize process for stamping to form.