CN104976121A - Crankshaft for rotary compressor and rotary compressor having same - Google Patents
Crankshaft for rotary compressor and rotary compressor having same Download PDFInfo
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- CN104976121A CN104976121A CN201510391383.4A CN201510391383A CN104976121A CN 104976121 A CN104976121 A CN 104976121A CN 201510391383 A CN201510391383 A CN 201510391383A CN 104976121 A CN104976121 A CN 104976121A
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- rotary compressor
- bent axle
- eccentric
- shaft
- countershaft
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Abstract
The invention discloses a crankshaft for a rotary compressor and the rotary compressor having the same, wherein the crankshaft for the rotary compressor includes a main shaft, an auxiliary shaft and an eccentric shaft; the main shaft and the auxiliary shaft are in coaxial arrangement and are separated in the axial direction; the eccentric shaft includes a main body part and an eccentric part, the main body part and the main shaft are in coaxial arrangement, two ends of the eccentric shaft are respectively connected with the main shaft and the auxiliary shaft, and the eccentric part is arranged at one side of the main body part and forms a hollow structure. According to the crankshaft for the rotary compressor, the hollow structure is formed in the eccentric shaft of the crankshaft, the mass center of the crankshaft is close to the central axis of the main shaft, a balance block of the related technology is omitted, the crankshaft is guaranteed to rotate around the rotation center in the rotation process, the self balance of the crankshaft and the reliability and performance of the rotary compressor are improved, and moreover, the crankshaft for the rotary compressor is simple in structure and low in cost.
Description
Technical field
The present invention relates to Compressor Technology field, more specifically, relate to a kind of bent axle for rotary compressor and there is its rotary compressor.
Background technique
Rotary compressor in correlation technique, due to the employing of crankshaft eccentric structure, the vibration of rotary compressor is larger, for reducing the axial vibration of compressor, generally on the rotor of compressor, equilibrium block being installed, by allocating the weight of equilibrium block, making compressor close to self balancing, but this kind of structure greatly reduces the reliability of rotary compressor.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention proposes a kind of bent axle for rotary compressor, and this is used for, and the bent axle reliability of rotary compressor is high, performance is strong.
The present invention also proposes a kind of rotary compressor with the above-mentioned bent axle for rotary compressor.
The bent axle for rotary compressor of embodiment according to a first aspect of the present invention, comprising: main shaft and countershaft, and described main shaft and described countershaft are coaxially arranged and spaced apart vertically; Eccentric shaft, described eccentric shaft comprises main part and eccentric part, and described main part coaxially arranges with described main shaft and two ends are connected with described countershaft with described main shaft respectively, and described eccentric part is located at the side of described main part and is formed as hollow-core construction.
According to the bent axle for rotary compressor of the embodiment of the present invention, by arranging hollow-core construction on the eccentric shaft of bent axle, make the central axis of barycenter close to main shaft of bent axle, eliminate the equilibrium block in correlation technique, ensure that bent axle can rotate around its rotating center in rotary course, improve the self balancing of bent axle and the reliability of rotary compressor and performance, and this is used for, and the crankshaft structure of rotary compressor is simple, cost is low.
According to one embodiment of present invention, described eccentric shaft also comprises push stopping part, and described push stopping part is located on the opposite side relative with described eccentric part of described main part.
According to one embodiment of present invention, described push stopping part is distributed on all positions except described eccentric part of described main part.
According to one embodiment of present invention, the minimum range of the outer contour of described push stopping part and the outer contour of described countershaft is H, H >=1mm.
According to one embodiment of present invention, the minimum range H >=2mm of the outer contour of described push stopping part and the outer contour of described countershaft.
According to one embodiment of present invention, the weight of described push stopping part equals the weight of described eccentric part.
According to one embodiment of present invention, described push stopping part described bent axle axially exceed described main part and described eccentric part place end face extends to both sides.
According to one embodiment of present invention, described main shaft, eccentric shaft and countershaft are integrally formed.
The rotary compressor of embodiment according to a second aspect of the present invention, comprises the bent axle for rotary compressor according to above-described embodiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the bent axle for rotary compressor according to the embodiment of the present invention;
Fig. 2 is according to an embodiment of the invention for the side view of the bent axle of rotary compressor;
Fig. 3 is the sectional view along A-A line in Fig. 1;
Fig. 4 is according to the side view of the bent axle for rotary compressor of another embodiment of the present invention.
Reference character:
Bent axle 100;
Main shaft 10; Countershaft 20; Eccentric shaft 30; Main part 31; Eccentric part 32; Hollow-core construction 321; Push stopping part 322.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
First the bent axle 100 for rotary compressor of embodiment is according to a first aspect of the present invention specifically described below referring to figs. 1 to Fig. 4.
As shown in Figure 1 to Figure 3, main shaft 10, countershaft 20 and eccentric shaft 30 is comprised according to the bent axle 100 for rotary compressor of the embodiment of the present invention.Specifically, main shaft 10 and countershaft 20 be coaxial to be arranged and spaced apart vertically, eccentric shaft 30 comprises main part 31 and eccentric part 32, and main part 31 and main shaft 10 be coaxial to be arranged and two ends are connected with countershaft 20 with main shaft 10 respectively, and eccentric part 32 is located at the side of main part 31 and is formed as hollow-core construction 321.
That is, bent axle 100 is primarily of main shaft 10, countershaft 20 and eccentric shaft 30 form, the two ends of eccentric shaft 30 are connected with countershaft 20 with main shaft 10 respectively, and main shaft 10 and countershaft 20 are coaxially arranged, and eccentric shaft 30 is arranged relative to the center axis of main shaft 10 and countershaft 20, wherein, eccentric shaft 30 forms primarily of main part 31 and eccentric part 32, main part 31 is coaxially arranged with main shaft 10 and countershaft 20, and eccentric part 32 protrudes from the component side surface of main part 31, and eccentric part 32 forms hollow structure to make the barycenter of eccentric shaft 30 close to the central axis of main shaft 10.When in the housing that bent axle 100 is arranged on rotary compressor, rotor (not shown) is set on the main shaft 10 of bent axle 100, and the periphery wall of eccentric shaft 30 is provided with piston (not shown), main shaft 10 is in rotary course, and piston does eccentric motion along with the central axis of eccentric shaft 30 relative main 10.
Thus, according to the bent axle 100 for rotary compressor of the embodiment of the present invention, by arranging hollow-core construction 321 on the eccentric shaft 30 of bent axle 100, make the barycenter of bent axle 100 close to the central axis of main shaft 10, eliminate the equilibrium block in correlation technique, ensure that bent axle 100 can rotate around its rotating center in rotary course, improve the self balancing of bent axle 100 and the reliability of rotary compressor and performance, and this is used for, and bent axle 100 structure of rotary compressor is simple, cost is low.
In addition, according to one embodiment of present invention, eccentric shaft 30 also comprises push stopping part 322, and push stopping part 322 is located on the opposite side relative with eccentric part 32 of main part 31.
Particularly, as shown in Figure 2, the eccentric part 32 of eccentric shaft 30 is positioned at the top of the central axis of main shaft 10, and the push stopping part 322 of eccentric shaft 30 is positioned at the below of the central axis of main shaft 10, be understandable that, eccentric part 32 and push stopping part 322 lay respectively at the both sides (both sides up and down as shown in Figure 2) of main part 31, further, the distance of the central axis of the lower end surface distance countershaft 20 of push stopping part 322 upper push stopping part 322 in the direction (above-below direction as shown in Figure 1) of the axis perpendicular to countershaft 20 is greater than the radius of countershaft 20.
When bent axle 100 is arranged in rotary compressor, the thrust surface of push stopping part 322 is only against for load-bearing on attachment face, and the section area of the central axis perpendicular to main shaft 10 of push stopping part 322 is larger, and bent axle 100 is installed more reliable.Certainly, the thrust surface of this push stopping part 322 is not limited to this, and as shown in Figure 4, thrust surface also can be positioned at the end of the countershaft 20 of bent axle 100 to be used for load-bearing.
Thus, by push stopping part 322 and eccentric part 32 being located at respectively the both sides of main part 31, not only can play the effect of the weight of balanced eccentric shaft 30, make the barycenter of eccentric shaft 30 near the central axis of main shaft 10, when bent axle 100 is arranged in rotary compressor, bent axle 100 can rotate around its rotating center, avoid making bent axle 100 that rigid deformation occurs because there is bias, and, the load-bearing area of push stopping part 322 can be increased, ensure the reliability that bent axle 100 is installed.
Alternatively, according to one embodiment of present invention, push stopping part 322 is distributed on all positions except eccentric part 32 of main part 31.As shown in Figure 2, eccentric part 32 is positioned at the upside of the central axis of main shaft 10 and forms crescent shape, hollow structure is formed in eccentric part 32, and the end face be connected with countershaft 20 of main part 31 is formed push stopping part 322, like this, push stopping part 322 and eccentric part 32 can by suitable size design, by the centroid transition of bent axle 100 on the central axis of main shaft 10, ensure the self balancing of bent axle 100, avoid bent axle 100, in rotary course, rigid deformation occurs, the structure of this bent axle 100 is simple, when bent axle 100 is used in rotary compressor, can economize in de-correlation technique to allocate the equilibrium block of barycenter, ensure the structure stability of this rotary compressor and the reliability of use.
And according to one embodiment of present invention, the minimum range of the outer contour of push stopping part 322 and the outer contour of countershaft 20 is H, H >=1mm.
Particularly, as shown in Figure 1, push stopping part 322 is on the direction (above-below direction as shown in Figure 1) of the axis perpendicular to countershaft 20, the distance of the central axis of the lower end surface distance countershaft 20 of push stopping part 322 is greater than the radius of countershaft 20, and, distance H between the lower end surface of push stopping part 322 and the lower end surface of countershaft 20 is more than or equal to 1mm, such as, the edge being positioned at bottom of the outer contour of push stopping part 322 exceeds edge 1mm or 3mm etc. being positioned at bottom of the outer contour of countershaft 20, like this, the section area axially perpendicular to main shaft 10 of push stopping part 322 is larger, the bearing power of push stopping part 322 is larger, ensure the installation reliability of bent axle 100.
Alternatively, according to one embodiment of present invention, the minimum range H >=2mm of the outer contour of push stopping part 322 and the outer contour of countershaft 20.
Thus, empty according in the middle of the eccentric part 32 of the bent axle 100 for rotary compressor of the embodiment of the present invention, and relative to correlation technique, push stopping part 322 moves on to eccentric part 32 offside (push stopping part 322 is not emptied), ensure that push stopping part 322 has certain thickness simultaneously, the barycenter of eccentric shaft 30 can be made as far as possible close to the rotating center of bent axle 100, reducing the noise and vibration caused because installing equilibrium block in correlation technique, further ensuring the reliability of rotary compressor.
Preferably, according to one embodiment of present invention, the weight of push stopping part 322 equals the weight of eccentric part 32.That is, by regulating the size of the hollow portion of push stopping part 322, eccentric part 32 and eccentric part 32, the weight of push stopping part 322 can be made to equal the weight of eccentric part 32, namely the barycenter of eccentric shaft 30 is positioned on the rotation centerline of bent axle 100, avoid bent axle 100 that centroid motion and rigid deformation occur in rotation process, ensure the reliability of rotary compressor.
According to one embodiment of present invention, push stopping part 322 bent axle 100 axially exceed main part 31 and eccentric part 32 place end face extends to both sides.As shown in Figure 1, in the present embodiment, the left side of main part 21 is provided with push stopping part 322, this push stopping part 322 exceeds the left side of main part 31 and eccentric part 32, certainly, push stopping part 322 can also lay respectively at the left and right sides of main part 31 and exceed the left and right end face of main part 31 respectively, by arranging push stopping part 322 on eccentric shaft 30, both the effect of load-bearing can have been played to bent axle 100, again can the quality of balanced bent axle 100, ensure the self balancing of bent axle 100 in rotation process, improve the reliability of bent axle 100.
Wherein, according to one embodiment of present invention, main shaft 10, eccentric shaft 30 and countershaft 20 are integrally formed.The structure be integrally formed not only can ensure the properity stability of bent axle 100, thus ensure the reliability of rotary compressor, and facilitate shaping, manufacture simple, and eliminate main shaft 10, assembly parts between countershaft 20 and eccentric shaft 30 and connect operation, substantially increase the efficiency of assembling of rotary compressor.
The rotary compressor of embodiment according to a second aspect of the present invention, comprises the bent axle 100 for rotary compressor according to above-described embodiment.Because the bent axle 100 for rotary compressor according to the above embodiment of the present invention has above-mentioned technique effect, therefore, rotary compressor according to the embodiment of the present invention also has corresponding technique effect, i.e. the vibration of this rotary compressor, noise are little, and reliability is high.
According to the rotary compressor of the embodiment of the present invention other form and operation be all known for those of ordinary skills, be not described in detail here.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. for a bent axle for rotary compressor, it is characterized in that, comprising:
Main shaft and countershaft, described main shaft and described countershaft are coaxially arranged and spaced apart vertically;
Eccentric shaft, described eccentric shaft comprises main part and eccentric part, and described main part coaxially arranges with described main shaft and two ends are connected with described countershaft with described main shaft respectively, and described eccentric part is located at the side of described main part and is formed as hollow-core construction.
2. the bent axle for rotary compressor according to claim 1, is characterized in that, described eccentric shaft also comprises push stopping part, and described push stopping part is located on the opposite side relative with described eccentric part of described main part.
3. the bent axle for rotary compressor according to claim 2, is characterized in that, described push stopping part is distributed on all positions except described eccentric part of described main part.
4. the bent axle for rotary compressor according to claim 2, is characterized in that, the minimum range of the outer contour of described push stopping part and the outer contour of described countershaft is H, H >=1mm.
5. the bent axle for rotary compressor according to claim 4, is characterized in that, the minimum range H >=2mm of the outer contour of described push stopping part and the outer contour of described countershaft.
6. the bent axle for rotary compressor according to claim 2, is characterized in that, the weight of described push stopping part equals the weight of described eccentric part.
7. the bent axle for rotary compressor according to claim 2, is characterized in that, described push stopping part described bent axle axially exceed described main part and described eccentric part place end face extends to both sides.
8. the bent axle for rotary compressor according to any one of claim 1-7, is characterized in that, described main shaft, eccentric shaft and countershaft are integrally formed.
9. a rotary compressor, is characterized in that, comprises the bent axle for rotary compressor according to any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510391383.4A CN104976121A (en) | 2015-07-02 | 2015-07-02 | Crankshaft for rotary compressor and rotary compressor having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510391383.4A CN104976121A (en) | 2015-07-02 | 2015-07-02 | Crankshaft for rotary compressor and rotary compressor having same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104976121A true CN104976121A (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510391383.4A Pending CN104976121A (en) | 2015-07-02 | 2015-07-02 | Crankshaft for rotary compressor and rotary compressor having same |
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| Country | Link |
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| CN (1) | CN104976121A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253462A (en) * | 2020-10-26 | 2021-01-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6275092A (en) * | 1985-09-30 | 1987-04-06 | Toshiba Corp | Rotary compressor |
| US20030228236A1 (en) * | 2002-06-07 | 2003-12-11 | Coffey Donald L. | Self-balanced compressor crankshaft |
| CN1603623A (en) * | 2003-09-30 | 2005-04-06 | 三星电子株式会社 | Variable capacity rotary compressor |
| JP2012219643A (en) * | 2011-04-05 | 2012-11-12 | Panasonic Corp | Multi-cylinder compressor |
| CN204783678U (en) * | 2015-07-02 | 2015-11-18 | 广东美芝制冷设备有限公司 | A rotary compressor that is used for rotary compressor's bent axle and has it |
-
2015
- 2015-07-02 CN CN201510391383.4A patent/CN104976121A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6275092A (en) * | 1985-09-30 | 1987-04-06 | Toshiba Corp | Rotary compressor |
| US20030228236A1 (en) * | 2002-06-07 | 2003-12-11 | Coffey Donald L. | Self-balanced compressor crankshaft |
| CN1603623A (en) * | 2003-09-30 | 2005-04-06 | 三星电子株式会社 | Variable capacity rotary compressor |
| JP2012219643A (en) * | 2011-04-05 | 2012-11-12 | Panasonic Corp | Multi-cylinder compressor |
| CN204783678U (en) * | 2015-07-02 | 2015-11-18 | 广东美芝制冷设备有限公司 | A rotary compressor that is used for rotary compressor's bent axle and has it |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253462A (en) * | 2020-10-26 | 2021-01-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
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Application publication date: 20151014 |
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