CN100532849C - Eccentric device for vortex compressor - Google Patents
Eccentric device for vortex compressor Download PDFInfo
- Publication number
- CN100532849C CN100532849C CNB2004100198165A CN200410019816A CN100532849C CN 100532849 C CN100532849 C CN 100532849C CN B2004100198165 A CNB2004100198165 A CN B2004100198165A CN 200410019816 A CN200410019816 A CN 200410019816A CN 100532849 C CN100532849 C CN 100532849C
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- China
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- eccentric
- vortex
- live axle
- pin
- fixed bushing
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Abstract
The eccentric device for vortex compressor includes vortex compressor comprising vortex stator and vortex rotor and features that it includes also one driving shaft fixed to the motor rotor and inserted inside the shaft hole of the frame to form a radial support rotating structure and a eccentric structure over the rotating structure; one fixed shaft bush connected to the end of the eccentric structure in the driving shaft to transfer the driving force of the driving motor to the vortex rotor; and one eccentric device for vortex compressor comprising the fixing pin inserted between the driving shaft and the fixed shaft bush to avoid the rotation of the fixed shaft bush. The present invention has expanded use range of the main casing mold, lowered cost, simplified assembling operation and raised production efficiency.
Description
Technical field
The present invention relates to a kind of eccentric of scroll compressor.
Background technique
Usually, scroll compressor is divided into radius variable formula and fixation radius formula according to the leak-proof manner of radial direction.The radius variable formula is meant that working as liquid refrigerant or machine oil and foreign matter enters pressing chamber inside, when causing pressing chamber pressure inside abnormal ascending, in order to prevent the damage of helical coil, the mode that the vortex rotor radial is retreated, and the fixation radius formula is meant no matter how contractive condition changes, the mode that the vortex rotor always rotates in same track.Radius variable formula and fixation radius formula scroll compressor itself all have merits and demerits, and the present invention will utilize the advantage of two kinds of scroll compressors just, has effectively prevented the phenomenon of refrigerant gas radial leakage.
As shown in Figure 1, existing scroll compressor comprises: the casing 1 that possesses sucking pipe SP and outlet pipe DP; Be separately positioned on the mainframe 2 and the secondary frame 3 of the both sides up and down of casing 1 inner cylinder; Be arranged on the drive motor 4 between mainframe 2 and the secondary frame 3; Be pressed in the center of drive motor 4, run through mainframe 2, transmit the live axle 5 of the rotating force of drive motor 4; Place mainframe 2 on, combine with live axle 5, carry out the vortex rotor 6 of circumnutation; Possessed the helical coil 7a of screw type for the helical coil 6a engagement with the vortex rotor forms several pressing chambers P, be fixed on the vortex stator 7 above the mainframe 2; Be arranged between vortex rotor 6 and the mainframe 1, prevent the European shaft coupling 8 of the autobiography of described vortex rotor 6; Combine with the back side of vortex stator 7, with the internal separation of casing 1 for sucking the high low pressure separating plate 9 of regional S1 and output area S2; Be arranged on the check valve assembly 10 of the adverse current that prevents to output to the pressurized gas in the output area S2 at the vortex stator 7 top board back sides.
The diameter of axis hole 2a changes according to the driving mode of described scroll compressor, and promptly fixation radius formula and radius variable formula adopt the axis hole 2a of different-diameter.For example, in fixation radius formula scroll compressor, as shown in Figure 2, the eccentric structure 5b that is arranged on the rotational structure 5a upper end of live axle 5 is rotated motion in order to make vortex rotor 6, a part of outer cylinder eccentric degree of its eccentric structure 5b relatively shows so that a part of outer cylinder of rotational structure 5a is outwards outstanding, and in variable-diameter formula scroll compressor, as shown in Figure 3, owing on described eccentric structure 5b, inserted slide bushings 11 in addition, so its eccentric structure 5b need not too depart from the center of rotational structure 5a.Thus, the diameter d 1 of the rotational structure 5b of the diameter D1 relative drive shaft 5 of the axis hole of the mainframe 2 of fixation radius formula scroll compressor needs to increase described eccentric structure 5b to the outstanding length in the rotational structure outside.And in variable-diameter formula scroll compressor, because eccentric structure 5b is arranged on the inside of rotational structure 5a, so the diameter D2 of the diameter d 2 of rotational structure 5a and axis hole 2a is big or small haply identical.Label 4A among the figure is a motor stator, and 4B is a rotor.
But, at aforesaid existing scroll compressor according to its driving mode, the eccentric degree of eccentric structure 5b that is arranged on live axle 5 upper ends is different, the axis hole 2a of mainframe 2 also needs to make respectively thus, thereby need make mould respectively, not only increase cost of production, and when assembling, separately assembled mainframe 2 that is used for fixing radius formula scroll compressor and the mainframe 2 that is used for radius variable formula compressor, so the packing engineering more complicated.
Summary of the invention
In order to overcome the above-mentioned shortcoming that existing scroll compressor exists, the invention provides a kind of rotating shaft eccentric structure of scroll compressor, its no matter the driving mode of compressor how to change, can shared same mainframe.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of eccentric of scroll compressor, scroll compressor is by the vortex stator, the vortex rotor, live axle, fixed bushing and fixing pin constitute, the helical coil of vortex stator screw type is fixed on the frame, the vortex rotor is formed with the helical coil of screw type, be rotated motion with the engagement of helical coil on the vortex stator and form the pressing chamber that moves continuously, and under the driving of drive motor, be rotated motion, live axle is inserted on the rotor of drive motor fixing, be inserted in rotationally in the axis hole of frame, forming thus can be at the rotational structure of radial direction upper support, and the outstanding eccentric structure that forms in the rotational structure the sphere of activities above rotational structure, fixed bushing is connected with the end of described live axle eccentric structure, the power of drive motor is passed on the vortex rotor, the critical line of fixing pin and live axle and fixed bushing is got involved between to prevent described fixed bushing rotation with matching, between the inner peripheral surface of the outer peripheral surface of this eccentric structure and corresponding therewith fixed bushing, form cotter way, cotter way has circular cross section, can be inserted in cotter way inside to fixing pin.
On the outer cylinder of this eccentric structure, be provided with first pin-and-hole with semi-circular cross-section, fixed bushing adopts loop configuration, identical and the external diameter of the external diameter of internal diameter and eccentric structure is exposed at outside the rotational structure of live axle outer cylinder, and on the fixed bushing inner cylinder, being provided with second pin-and-hole with semi-circular cross-section, first pin-and-hole of second pin-and-hole and eccentric structure together constitutes circular cotter way.
The eccentric of the scroll compressor of the present invention's design, off-centre is provided with the outstanding eccentric structure of live axle near rotational structure, and at described eccentric structure at the fixed bushing that fixedly has been pressed into outside the sphere of activities that projects to rotational structure, thus regardless of the driving mode of compressor, axis hole with a kind of mainframe of radial support live axle can be set, and mould that thus can shared making mainframe, obtain saving the effect of operating cost.And, also can shared mainframe in when assembling, therefore simplified packing engineering, improved manufacturing efficiency.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the longitudinal sectional drawing of existing scroll compressor example,
Fig. 2 is in existing fixed radius formula scroll compressor, the longitudinal sectional drawing of the combination relation between expression mainframe and the rotating shaft,
Fig. 3 is the longitudinal sectional drawing of the combination relation between mainframe and the rotating shaft in existing radius variable formula scroll compressor,
Fig. 4 be in scroll compressor of the present invention mainframe and rotating shaft in conjunction with after longitudinal sectional drawing,
Fig. 5 is the longitudinal sectional drawing of combination relation between mainframe and the rotating shaft in scroll compressor of the present invention,
Fig. 6 is the sectional drawing of " I-I " line among Fig. 5,
Fig. 7 is the transverse cross-sectional view in another embodiment of scroll compressor shaft eccentric structure of the present invention.
The number in the figure explanation:
110: mainframe 111: axis hole
120: live axle 121: rotational structure
122: 123: the first pin-and-holes of eccentric structure
Locating face 130 in 124: the first: fixed bushing
132: the second locating faces of 131: the second pin-and-holes
140: fixing pin
Embodiment
Shown in Fig. 1,4,5,6, the scroll compressor of the present invention's design comprises: be fixed on the mainframe 110 in the casing 1; Combine with the rotor 4B of drive motor 4, on radial direction, be subjected to the live axle 120 of the support of mainframe 110; Be eccentrically set on the upper end of described live axle 120, the power of drive motor 4 is passed to vortex stator 7 constituted fixed bushing 130 in the vortex rotor 6 of a pair of pressing chamber P; And between the critical line of live axle 120 and fixed bushing 130 is got involved with matching, prevent the fixing pin 140 of the rotation of described fixed bushing 130.
Described live axle 120 comprises: insert on the axis hole that is inserted in mainframe 110 rotationally 111 be fixed on the described rotor 4B rotational structure 121 that can radial support; Protrude in the eccentric eccentric structure 122 that is provided with in upper end of described rotational structure 121.
As previously mentioned, the external diameter of described rotational structure 121 should adopt the identical outside diameter d of inside diameter D with the axis hole 111 of mainframe 110.
And, on the outer cylinder of described eccentric structure 122, be provided with and form circular cross section when carrying out plane projection, the 1st pin-and-hole 123 with semi-circular cross-section with described fixed bushing 130.
Fixed bushing 130 adopts loop configuration, the external diameter of its internal diameter and described eccentric structure 122 much at one and its external diameter adopt the outer size of rotational structure 121 that makes outer cylinder be exposed at live axle 120, and being provided with the 2nd pin-and-hole 131 on a certain side of cylinder within it with semi-circular cross-section, the 1st pin-and-hole 123 of itself and described eccentric structure 122 together constitutes round structure.
Among the figure with existing compressor in identical part used identical label.
The eccentric of scroll compressor of the present invention has following action effect.
Drive motor 4 turn-on power rear drive shafts 120 begin rotation, at this moment are rotated along the track of stipulating with the live axle 120 eccentric vortex rotors 6 that combine and move.In this process, along with the pressing chamber P that forms between vortex rotor 6 and the vortex stator 7 continuous move and volume diminishes gradually, constantly suck, compression output refrigerant gas also.
Here, when described live axle 120 being inserted on the axis hole 111 of mainframes 110, be pressed into the rotor 4B of size on the rotational structure 121 of live axle 120 greater than the drive motor 4 of the axis hole 111 diameter D of mainframe 110, therefore after the end of live axle 120 eccentric structures 122 inserts the axis hole 111 of mainframe 110, on the opposing side fixed bushing 130 is being sandwiched on the eccentric structure 122.Afterwards, in the circular trough that the 2nd pin-and-hole 131 by the 1st pin-and-hole 123 of eccentric structure 122 and fixed bushing 130 constitutes, insert described fixing pin 140, described fixed bushing 130 is arranged on the eccentric structure 122 of live axle 120.
Be arranged within the sphere of activities of rotational structure 121 by eccentric structure 122 described live axle 120, the axis hole 111 diameter D of mainframe 110 can be designed to identical with the diameter d of rotational structure 121, no matter the kind of compressor is fixation radius formula scroll compressor or radius variable formula scroll compressor thus, can utilize with the identical mainframe 110 of a kind of specification of Mold Making.
Another embodiment's of the scroll compressor of the present invention's design main contents are as follows.
In the foregoing embodiments, on the critical surface of the eccentric structure 122 of live axle 120 and fixed bushing 130, be provided with pin-and-hole 123,131, and in pin-and-hole, inserted fixing pin 140, the eccentric structure 122 and the fixed bushing 140 of live axle 120 are combined.But, in the present embodiment, as shown in Figure 7, carried out " secondary cutting " for the eccentric structure 122 of live axle 120 and formed the 1st locating face 124, formed the 2nd locating face 132 and also carried out " secondary cutting " in the inner cylinder of corresponding with it fixed bushing 130, when described eccentric structure rotates, prevented the idle running of fixed bushing 130 thus.For this reason, though in drawing, do not show, can make the outer cylinder of described eccentric structure and the inner cylinder of fixed bushing adopt structure with same profile.
The effect of invention
The eccentric of the scroll compressor of the present invention design, near rotational structure eccentric setting drive The outstanding eccentric structure of moving axis, and project to rotational structure at described eccentric structure fixedly being pressed into Fixed bushing outside the scope of activities regardless of the type of drive of compressor, can arrange same thus Plant the axis hole of the mainframe of radial support driving shaft, and can share thus the mould of making mainframe, To the effect of saving producing cost. And, when assembling, also can share mainframe, therefore simplified group The dress engineering has improved production efficiency.
Claims (2)
1, a kind of eccentric of scroll compressor, scroll compressor is by the vortex stator, the vortex rotor, live axle, fixed bushing and fixing pin constitute, the helical coil that the vortex stator forms screw type is fixed on the frame, the vortex rotor is formed with the helical coil of screw type, be rotated motion and form the pressing chamber that moves continuously with the helical coil engagement on the vortex stator, and under the driving of drive motor, be rotated motion, live axle is inserted on the rotor of drive motor fixing, be inserted in rotationally in the axis hole of frame, form the radial support rotational structure, and the outstanding eccentric structure that forms in the rotational structure the sphere of activities above rotational structure
Fixed bushing is connected with the end of described live axle eccentric structure, the power of drive motor is passed on the vortex rotor, the critical line of fixing pin and live axle and fixed bushing is got involved between to prevent the fixed bushing rotation with matching, it is characterized in that: between the inner peripheral surface of the outer peripheral surface of described eccentric structure (122) and corresponding fixed bushing (130), form cotter way, cotter way has circular cross section, and fixing pin (140) is inserted in cotter way inside.
2, the eccentric of scroll compressor according to claim 1, it is characterized in that: on the outer cylinder of described eccentric structure (122), be provided with first pin-and-hole (123) with semi-circular cross-section, fixed bushing (130) adopts loop configuration, identical and the external diameter of the external diameter of internal diameter and eccentric structure (122) is exposed at outside the rotational structure (121) of live axle (120) outer cylinder, and on fixed bushing (130) inner cylinder, being provided with second pin-and-hole (131) with semi-circular cross-section, second pin-and-hole (131) together constitutes circular cotter way with first pin-and-hole (123) of eccentric structure (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100198165A CN100532849C (en) | 2004-06-28 | 2004-06-28 | Eccentric device for vortex compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100198165A CN100532849C (en) | 2004-06-28 | 2004-06-28 | Eccentric device for vortex compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715663A CN1715663A (en) | 2006-01-04 |
| CN100532849C true CN100532849C (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100198165A Expired - Fee Related CN100532849C (en) | 2004-06-28 | 2004-06-28 | Eccentric device for vortex compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100532849C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101767062B1 (en) * | 2010-12-29 | 2017-08-10 | 엘지전자 주식회사 | Hermetic compressor and manufacturing method thereof |
| KR101849138B1 (en) * | 2012-01-04 | 2018-04-16 | 엘지전자 주식회사 | Scroll compressor with shaft inserting portion and manufacturing method thereof |
| CN102900670A (en) * | 2012-08-31 | 2013-01-30 | 珠海格力电器股份有限公司 | Horizontal compressor having symmetrical double cylinders |
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2004
- 2004-06-28 CN CNB2004100198165A patent/CN100532849C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1715663A (en) | 2006-01-04 |
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Granted publication date: 20090826 Termination date: 20100628 |