CN105221428A - A kind of rotary compressor and crank assemblby thereof - Google Patents

A kind of rotary compressor and crank assemblby thereof Download PDF

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Publication number
CN105221428A
CN105221428A CN201410305790.4A CN201410305790A CN105221428A CN 105221428 A CN105221428 A CN 105221428A CN 201410305790 A CN201410305790 A CN 201410305790A CN 105221428 A CN105221428 A CN 105221428A
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CN
China
Prior art keywords
eccentric
crank assemblby
crankshaft
rotary compressor
breach
Prior art date
Application number
CN201410305790.4A
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Chinese (zh)
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CN105221428B (en
Inventor
李永贵
王维国
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珠海凌达压缩机有限公司
珠海格力电器股份有限公司
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Priority to CN201410305790.4A priority Critical patent/CN105221428B/en
Publication of CN105221428A publication Critical patent/CN105221428A/en
Application granted granted Critical
Publication of CN105221428B publication Critical patent/CN105221428B/en

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Abstract

The invention discloses a kind of crank assemblby, comprise crankshaft body, the end of described crankshaft body is provided with eccentric part, the top of the axial cross section of described eccentric part is arc, the flange both sides of described eccentric part are relatively set with balance breach, the plane determined to the line of described eccentric part rotating center and the axis of described crankshaft body by described eccentric part outer rim summit, described two balance breach with this plane for reference level plane symmetry.In working procedure, balance breach described in symmetrically arranged two and effectively can shorten distance between the barycenter of described eccentric part and its rotating center, and reduce the counterweight of compressor, thus the frictional contact surface effectively reduced under the prerequisite guaranteeing crankshaft structure intensity and lifting surface area thereof between crank assemblby and roller, reduce the wearing and tearing of relevant counterpart, and make the operational reliability of described rotary compressor and working life thereof be able to corresponding raising.The invention also discloses a kind of rotary compressor of this crank assemblby of application.

Description

A kind of rotary compressor and crank assemblby thereof

Technical field

The present invention relates to compressor corollary equipment technical field, particularly a kind of crank assemblby.The invention still further relates to a kind of rotary compressor of this crank assemblby of application.

Background technique

Rotary compressor is that air-conditioning and refrigerator etc. need freeze the requisite constituent element of electrical equipment of operation, and crank assemblby is as the primary clustering of rotary compressor, and its usability also gets more and more people's extensive concerning day by day.

In current existing rotary compressor assembling using process, the important excitation source of the vibration being rotary compressor that runs up of its crank assemblby, the rotation of crankshaft high-speed simultaneously makes the rotary inertia of pump assembly larger, although be provided with counterweight, but desirable state of equilibrium can not be reached, cause compressor body vibration still larger; The eccentric part of bent axle and the comprehensive engagement of roller simultaneously will directly affect the mechanical efficiency of the pump housing, increase friction torque and friction power loss, especially will the reliability of compressor be produced to direct negative effect and then affect the total quality of compressor under bad working environments.

Therefore, how to reduce the vibration of rotary compressor, reduce its component wear, improving its operational reliability and extending its working life is the important technological problems that those skilled in the art need to solve at present.

Summary of the invention

The object of this invention is to provide a kind of crank assemblby, this crank assemblby can reduce the vibration of rotary compressor, reduces its component wear, improves its operational reliability and extends its working life.Another object of the present invention is to provide a kind of rotary compressor applying above-mentioned crank assemblby.

For solving the problems of the technologies described above, the invention provides a kind of crank assemblby, comprise crankshaft body, the end of described crankshaft body is provided with eccentric part, the top of the axial cross section of described eccentric part is arc, the flange both sides of described eccentric part are relatively set with balance breach, the plane determined to the line of described eccentric part rotating center and the axis of described crankshaft body by described eccentric part outer rim summit, and described two balance breach with this plane for reference level plane symmetry.

Preferably, the edge of the cross section of described balance breach is straight line.

Preferably, the edge of the cross section of described balance breach is the circular arc that the center of circle is positioned at the axis side away from described crankshaft body.

The present invention also provides a kind of rotary compressor, comprises housing, and described enclosure interior is provided with the crank assemblby and roller that cooperatively interact, and described crank assemblby is specially the crank assemblby as described in above-mentioned any one.

Relative above-mentioned background technology, crank assemblby provided by the present invention, comprise crankshaft body, the end of described crankshaft body is provided with eccentric part, the top of the axial cross section of described eccentric part is arc, the flange both sides of described eccentric part are relatively set with balance breach, the plane determined to the line of described eccentric part rotating center and the axis of described crankshaft body by described eccentric part outer rim summit, and described two balance breach with this plane for reference level plane symmetry.In working procedure, balance breach described in symmetrically arranged two and effectively can shorten distance between the barycenter of described eccentric part and its rotating center, and reduce the counterweight of compressor, thus the frictional contact surface effectively reduced under the prerequisite guaranteeing crankshaft structure intensity and lifting surface area thereof between crank assemblby and roller, reduce the wearing and tearing of relevant counterpart, and make the operational reliability of described rotary compressor and working life thereof be able to corresponding raising.

In another preferred version of the present invention, the edge of the cross section of described balance breach is straight line.The edge of this kind of cross section is the global stability that the balance breach of linear structure can ensure described eccentric part, and process implementing process is comparatively simple and easy to do, and operation easier is lower, and work efficiency is higher.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

The assembly structure schematic diagram of the crank assemblby that Fig. 1 provides for a kind of embodiment of the present invention;

Fig. 2 is the side view of Fig. 1;

The assembly structure schematic diagram of the crank assemblby that Fig. 3 provides for the another kind of embodiment of the present invention;

Fig. 4 is the side view of Fig. 3.

Embodiment

Core of the present invention is to provide a kind of crank assemblby, and this crank assemblby can reduce the vibration of rotary compressor, reduces its component wear, improves its operational reliability and extends its working life; Meanwhile, a kind of rotary compressor applying above-mentioned crank assemblby is provided.

In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

Please refer to Fig. 1 and Fig. 2, the assembly structure schematic diagram of the crank assemblby that Fig. 1 provides for a kind of embodiment of the present invention; Fig. 2 is the side view of Fig. 1.

In a specific embodiment, crank assemblby provided by the present invention, comprise crankshaft body 11, the end of crankshaft body 11 is provided with eccentric part 12, the top of the axial cross section of eccentric part 12 is arc, the flange both sides of eccentric part 12 are relatively set with balance breach 121, the plane determined to the line of eccentric part 12 rotating center and the axis of crankshaft body 11 by eccentric part 12 outer rim summit, and two balance breach 121 with this plane for reference level plane symmetry.In working procedure, symmetrically arranged two balance breach 121 effectively can shorten the distance between the barycenter of eccentric part 12 and its rotating center, and reduce the counterweight of compressor, thus the frictional contact surface effectively reduced under the prerequisite guaranteeing crankshaft structure intensity and lifting surface area thereof between crank assemblby and roller, reduce the wearing and tearing of relevant counterpart, and make the operational reliability of described rotary compressor and working life thereof be able to corresponding raising.

Further, the edge balancing the cross section of breach 121 is straight line.The edge of this kind of cross section is the global stability that the balance breach 121 of linear structure can ensure eccentric part 12, and process implementing process is comparatively simple and easy to do, and operation easier is lower, and work efficiency is higher.

Please refer to Fig. 3 and Fig. 4, the assembly structure schematic diagram of the crank assemblby that Fig. 3 provides for the another kind of embodiment of the present invention; Fig. 4 is the side view of Fig. 3.

On the other hand, the edge balancing the cross section of breach 121 is the circular arc that the center of circle is positioned at the axis side away from crankshaft body 11.The edge of this kind of cross section is the two layers of material resection that the balance breach 121 of circular arc can improve eccentric part 12 further, thus shortens the distance between the barycenter of eccentric part 12 and its rotating center further, the counterweight of a step-down low compression machine of going forward side by side.

In a specific embodiment, rotary compressor provided by the present invention, comprises housing, and described enclosure interior is provided with the crank assemblby and roller that cooperatively interact, and described crank assemblby is specially the crank assemblby as described in foregoing embodiments.Structural vibration and the component wear thereof of this rotary compressor are less, and its working life is longer, run comparatively reliable and stable.

In summary, the crank assemblby provided in the present invention, comprise crankshaft body, the end of described crankshaft body is provided with eccentric part, the top of the axial cross section of described eccentric part is arc, the flange both sides of described eccentric part are relatively set with balance breach, the plane determined to the line of described eccentric part rotating center and the axis of described crankshaft body by described eccentric part outer rim summit, and described two balance breach with this plane for reference level plane symmetry.In working procedure, balance breach described in symmetrically arranged two and effectively can shorten distance between the barycenter of described eccentric part and its rotating center, and reduce the counterweight of compressor, thus the frictional contact surface effectively reduced under the prerequisite guaranteeing crankshaft structure intensity and lifting surface area thereof between crank assemblby and roller, reduce the wearing and tearing of relevant counterpart, and make the operational reliability of described rotary compressor and working life thereof be able to corresponding raising.

In addition, the rotary compressor of the above-mentioned crank assemblby of application provided by the invention, structural vibration and the component wear thereof of this rotary compressor are less, and its working life is longer, run comparatively reliable and stable.

In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.

Above crank assemblby provided by the present invention and the rotary compressor of applying this crank assemblby are described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.

Claims (4)

1. a crank assemblby, it is characterized in that: comprise crankshaft body, the end of described crankshaft body is provided with eccentric part, the top of the axial cross section of described eccentric part is arc, the flange both sides of described eccentric part are relatively set with balance breach, the plane determined to the line of described eccentric part rotating center and the axis of described crankshaft body by described eccentric part outer rim summit, described two balance breach with this plane for reference level plane symmetry.
2. crank assemblby as claimed in claim 1, is characterized in that: the edge of the cross section of described balance breach is straight line.
3. crank assemblby as claimed in claim 1, is characterized in that: the edge of the cross section of described balance breach is the circular arc that the center of circle is positioned at the axis side away from described crankshaft body.
4. a rotary compressor, comprises housing, and described enclosure interior is provided with the crank assemblby and roller that cooperatively interact, it is characterized in that: described crank assemblby is specially crank assemblby as claimed any one in claims 1 to 3.
CN201410305790.4A 2014-06-30 2014-06-30 A kind of rotary compressor and its crank assemblby CN105221428B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410305790.4A CN105221428B (en) 2014-06-30 2014-06-30 A kind of rotary compressor and its crank assemblby

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410305790.4A CN105221428B (en) 2014-06-30 2014-06-30 A kind of rotary compressor and its crank assemblby

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CN105221428A true CN105221428A (en) 2016-01-06
CN105221428B CN105221428B (en) 2019-01-25

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030228236A1 (en) * 2002-06-07 2003-12-11 Coffey Donald L. Self-balanced compressor crankshaft
CN1601127A (en) * 2003-09-27 2005-03-30 乐金电子(天津)电器有限公司 Crankshaft structure of revolving type compressor
JP2011179453A (en) * 2010-03-03 2011-09-15 Panasonic Corp Rotary compressor device
CN202789529U (en) * 2012-07-03 2013-03-13 珠海格力电器股份有限公司 Crank shaft with variable offset and rotary type compressor using same
CN203130513U (en) * 2013-03-05 2013-08-14 安徽美芝精密制造有限公司 Crankshaft component for rotary compressor and rotary compressor with crankshaft component
CN203500011U (en) * 2013-07-31 2014-03-26 广东美芝制冷设备有限公司 Crankshaft component for rotary compressor
CN203926020U (en) * 2014-06-30 2014-11-05 珠海凌达压缩机有限公司 A kind of rotary compressor and crank assemblby thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030228236A1 (en) * 2002-06-07 2003-12-11 Coffey Donald L. Self-balanced compressor crankshaft
CN1601127A (en) * 2003-09-27 2005-03-30 乐金电子(天津)电器有限公司 Crankshaft structure of revolving type compressor
JP2011179453A (en) * 2010-03-03 2011-09-15 Panasonic Corp Rotary compressor device
CN202789529U (en) * 2012-07-03 2013-03-13 珠海格力电器股份有限公司 Crank shaft with variable offset and rotary type compressor using same
CN203130513U (en) * 2013-03-05 2013-08-14 安徽美芝精密制造有限公司 Crankshaft component for rotary compressor and rotary compressor with crankshaft component
CN203500011U (en) * 2013-07-31 2014-03-26 广东美芝制冷设备有限公司 Crankshaft component for rotary compressor
CN203926020U (en) * 2014-06-30 2014-11-05 珠海凌达压缩机有限公司 A kind of rotary compressor and crank assemblby thereof

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