CN2844513Y

CN2844513Y - Gas exhausting assembly of rotary compressor

Info

Publication number: CN2844513Y
Application number: CN 200520027812
Authority: CN
Inventors: 李元鹤; 郎涛
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2005-10-21
Filing date: 2005-10-21
Publication date: 2006-12-06
Anticipated expiration: 2015-10-21

Abstract

The utility model relates to an exhaust assembly for a rotary compressor, which comprises a casing, a spring and an exhaust hole plug, wherein the casing forms a circular cover shape, the lower part of the casing is open and the edge of one side of the lower end can be fixed on the edge of a groove on the top surface of a bearing on the upper part. The spring is arranged in the casing, the upper end is fixed on the inner wall of the top surface of the casing, and the lower end is connected with the exhaust hole plug which can be inserted into an exhaust hole; the outer diameter of the exhaust hole plug is the same as the inner diameter of the exhaust hole, and the exhaust hole plug is made of high-temperature resistant elastic material. The exhaust assembly for a rotary compressor, which is provided by the utility model, uses the exhaust hole plug made of high-temperature resistant elastic material to plug the inner space of the exhaust hole; accordingly, problem that the work efficiency of a compressor is reduced because of the detention of cooling media in the exhaust hole can be avoided, the structure of the exhaust assembly is simple, and accordingly, the production cost can be reduced.

Description

The discharge means of rotary compressor

Technical field

The present invention relates to a kind of rotary compressor, particularly relate to a kind of discharge means of rotary compressor.

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 10 of this prior art is made of cylindrical housing 3 and loam cake 4 and lower cover 5.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.30 of compression mechanical portion that are positioned at the seal container bottom mainly comprise cylinder 35 and are installed in the upper bearing 32 and the lower bearing 33 of cylinder 35 upper and lower end faces respectively.Bent axle 31 runs through the center of rotor 12 and cylinder 35, and it can together rotate with rotor 12, thereby the rotating force that electromechanical part produces can be passed to compression mechanical portion 30.The bottom of bent axle 31 is formed with eccentric part 31a, and the outside of eccentric part 31a then is with and can be rotated in cylinder 35, thereby rolling of compression refrigerant encircles 36.Because eccentric part 31a and roll ring 36 center of gravity and do not overlap with the rotating center of bent axle 31, so the power energy imbalance can occur during high speed rotating when bent axle 31 in compressor, the compressor generation is vibrated and the main cause of noise thereby become.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.Fig. 2 is the rotary compressor middle and upper part bearing and the discharge means partial structurtes sectional view of prior art.As shown in Figure 2, the upper bearing 32 of this prior art mainly comprises the top that is combined in cylinder 35, is formed with oval-shaped groove 13 on the upper surface, and a side of groove 13 then connects the circular shaft bearing 15 that is formed with exhaust port 14; With protruding upward and integrally formed from the center portion of bearing support 15, and the center is formed with the axle sleeve 16 of the center hole that can run through bent axle 31.On the upper bearing 32 discharge means is installed, described discharge means comprises the inside that is installed in bearing support 15 upper grooves 13, and an end is fixed on the exhaust valve plate 17 on groove 13 bottom surfaces with exhaust port 14 relative sides; With exhaust valve plate 17 tops that are positioned at groove 13, the fixed end of an end and exhaust valve plate 17 is fixed together, and the other end is warpage upwards then, thereby can limit the snubber 18 of exhaust valve plate 17 free end lifting heights.When this rotary compressor 10 moves, the rotor 12 at seal container central upper portion position will by and stator 11 between electromagnetic action carry out high speed rotating, drive simultaneously to run through the bent axle 31 at its center and be enclosed within rolling of bent axle 31 bottoms and encircle 36 also together rotations, thereby in the future self-circulation system and the refrigerant that enters cylinder 35 inside through refrigerant import 1 compress, compression process will finish after the refrigerant of overcompression will rely on the pressure jack-up that makes progress to be positioned at exhaust valve plate 17 free ends of upper bearing 32 upper grooves 13 inside and to drain into electromechanical part from the exhaust port 14 of bearing support 15 formation, be expelled back into the circulatory system from the refrigerant exit 2 that is arranged in loam cake 4 center portions at last.But, there is following point in the rotary compressor of this prior art: as mentioned above, when through the refrigerant of overcompression from the process that upwards discharge by the exhaust port on the upper bearing 32 14 inside of cylinder 35, all the time can be detained a part of refrigerant in the exhaust port 14 and can't all discharge, thereby the formation dead space will reduce the working efficiency of compressor so undoubtedly.In addition, the structure more complicated of this discharge means, thereby can raise because of increasing of making and assembling procedure makes cost of production.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind of working efficiency that can improve compressor, the discharge means of the simple in structure and rotary compressor that can reduce production costs.

In order to achieve the above object, the discharge means of rotary compressor provided by the invention comprises housing, spring and exhaust stopple; Described housing is open and lower end one side in bottom along the dome-shaped that can be fixed on upper bearing end face upper groove edge; Spring is arranged on the inside of housing, and its upper end is fixed on the end face inwall of housing, and the lower end links to each other with the exhaust stopple; The exhaust stopple then can insert the inside of exhaust port.

The external diameter of described exhaust stopple is identical with the internal diameter of exhaust port.

Described exhaust port adopts high temperature resistant elastic material to make.

The discharge means of rotary compressor provided by the invention is to utilize the exhaust stopple of being made by high temperature resistant elastic material to block the inner space of exhaust port, not only can avoid like this because of being detained the problem that compressor operating efficient that refrigerant causes reduces in the exhaust port, and discharge means is simple in structure, thereby can reduce production costs.

Description of drawings

Be elaborated below in conjunction with the discharge means of the drawings and specific embodiments to rotary compressor provided by the invention.The parts identical with prior art use identical symbol, and omit its explanation of carrying out.

Fig. 1 is the rotary compressor internal structure sectional view of prior art.

Fig. 2 is the rotary compressor middle and upper part bearing and the discharge means partial structurtes sectional view of prior art.

Fig. 3 is rotary compressor provided by the invention middle and upper part bearing and discharge means partial structurtes sectional view.

Embodiment

As Fig. 3 and shown in Figure 1, the discharge means of rotary compressor provided by the invention comprises housing 40, spring 41 and exhaust stopple 42; Described housing 40 is open and lower end one side in bottom along the dome-shaped that can be fixed on upper bearing 32 end face upper grooves 13 edges; Spring 41 is arranged on the inside of housing 40, and its upper end is fixed on the end face inwall of housing 40, and the lower end links to each other with exhaust stopple 42; Exhaust stopple 42 then can insert the inside of exhaust port 14.The external diameter of described exhaust stopple 42 is identical with the internal diameter of exhaust port 14, thereby the refrigerant that can prevent cylinder 35 inside and adopts high temperature resistant elastic material to make to external leakage.When rotary compressor provided by the invention moves, the rotor 12 at seal container central upper portion position will by and stator 11 between electromagnetic action carry out high speed rotating, drive simultaneously to run through the bent axle 31 at its center and be enclosed within rolling of bent axle 31 bottoms and encircle 36 also together rotations, thereby in the future self-circulation system and the refrigerant that enters cylinder 35 inside through refrigerant import 1 compress, compression process finishes in the rear cylinder 35 refrigerants through overcompression and will rely on the pressure jack-up that makes progress to be positioned at the exhaust stopple 42 of exhaust port 14 inside, thereby exhaust stopple 42 is moved up in pressure spring 41 and open exhaust port 14, so that the refrigerants in the cylinder 35 drain into electromechanical part by the passage 43 that forms between exhaust port 14 and groove 13 and housing 40 opposite side edges successively, be expelled back into the circulatory system from the refrigerant exit 2 that is arranged in loam cake 4 center portions at last.After treating that exhaust process finishes, the pressure in the cylinder 35 reduce rapidly, and exhaust this moment stopple 42 will come back to the inside of exhaust port 14 and block the inner space of exhaust port 14 under the elastic restoring force effect of spring 41.Thereby enter next cyclic process.Because exhaust stopple 42 is arranged in the inner space of exhaust port 14 all the time in the compression process of refrigerant, thus can not be detained refrigerant in the exhaust process end final vacuum hole 14, thus can not form dead space, therefore can improve the working efficiency of compressor.In addition, compared with the prior art, that discharge means provided by the invention also has is simple in structure, assembling easily and need not to change the advantage of upper bearing 32 original structures, therefore can reduce production costs.

Claims

1, a kind of discharge means of rotary compressor is characterized in that: the discharge means of described rotary compressor comprises housing (40), spring (41) and exhaust stopple (42); Described housing (40) is open and lower end one side in bottom along the dome-shaped that can be fixed on upper bearing (32) end face upper groove (13) edge; Spring (41) is arranged on the inside of housing (40), and its upper end is fixed on the end face inwall of housing (40), and the lower end links to each other with exhaust stopple (42); Exhaust stopple (42) then can insert the inside of exhaust port (14).

2, the discharge means of rotary compressor according to claim 1 is characterized in that: the external diameter of described exhaust stopple (42) is identical with the internal diameter of exhaust port (14).

3, the discharge means of rotary compressor according to claim 1 is characterized in that: described exhaust stopple (42) adopts high temperature resistant elastic material to make.