CN201687711U - Compressor pump body structure and compressor with the same - Google Patents
Compressor pump body structure and compressor with the same Download PDFInfo
- Publication number
- CN201687711U CN201687711U CN2010202149520U CN201020214952U CN201687711U CN 201687711 U CN201687711 U CN 201687711U CN 2010202149520 U CN2010202149520 U CN 2010202149520U CN 201020214952 U CN201020214952 U CN 201020214952U CN 201687711 U CN201687711 U CN 201687711U
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- pump body
- body structure
- compressor
- compressor pump
- lower flange
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Abstract
The utility model provides a compressor pump body structure and a compressor with the same, wherein the compressor pump body structure comprises a crankshaft and a lower flange; the crankshaft comprises a long shaft, a short shaft and an eccentric shaft connected between the long shaft and the short shaft; the short shaft is provided with a first matching surface; and the lower flange is provided with a second matching surface matched with the first matching surface which is a spherical surface. The utility model further provides the compressor which comprises the compressor pump body structure. The utility model realizes automatic alignment by eliminating overturning moment, and overcomes the problems of mechanical loss, noise vibration and the like; and on the basis, by designing an oil line, the utility model increases the lubrication between motion pairs, reduces the wear, leads the axial structure of the compressor to be more compact and further achieves the effect of improving the reliability and performance of the compressor.
Description
Technical field
The utility model relates to refrigerating field, in particular to a kind of compressor pump body structure and have the compressor of this pump body structure.
Background technique
As shown in Figure 1, in the existing rotary roller formula compressor pump body structure, cylinder 7 is installed between upper flange 5 and the lower flange 3.Bent axle 1 passes upper flange 5 and lower flange 3 and cylinder 7.Bent axle 1 comprises: major axis 13, minor axis 15 and be connected eccentric shaft 11 between the two, and wherein major axis 13 and minor axis 15 coaxial settings, eccentric shaft 11 is different with the axis of major axis 13 or minor axis 15.Adopt the cooperating of bent axle 1 and lower flange 3 fit system of axle and bearing shell, the fit system of genus cylindricality sliding bearing.Pump body structure (the abbreviation pump housing) is in operation process, and the load that minor axis 15 bears is bigger usually, thereby wearing and tearing are more serious, can reduce the reliability of compressor.
Secondly, for preventing the axial runout of bent axle, bent axle and lower flange have a power of pressing lower flange vertically downward in axial design usually, bent axle is processed a thrust surface 111 down with the eccentric part that contacting of flange leans against bent axle, but thrust surface can only design the eccentric position at bent axle, be on the eccentric shaft 11, the direction of 3 pairs of bent axle 1 holding powers of lower flange in the axle center of the major axis or the minor axis of bent axle, does not inevitably produce a tilting moment again.From the stressed angle analysis of bent axle, the pump housing must add to axial power of bent axle when design, makes bent axle can press the lower flange surface, does not produce and beats.Among the figure G represent the additional electromagnetic force of giving bent axle of the gravity of bent axle and rotor and motor with joint efforts, direction is straight down; Lower flange can be given holding power N of bent axle, direction straight up, N and G equal and opposite in direction, direction is opposite.Its point of action not on the medial axis of major axis or minor axis, with the distance of medial axis be d.Bent axle has a tilting moment under the effect of N and G, size is N*d, and direction is shown in arrow among the figure.The holding power that this moment can only rely on upper and lower flange to offer bent axle comes balance, and this will cause the wearing and tearing of bent axle and the appearance of noise and vibration problem, and can reduce the mechanical efficiency of compressor.
The model utility content
The utility model purpose is to provide a kind of compressor pump body structure, to solve the pump housing in operation process, and problem such as the load that bent axle bears is big, wearing and tearing are more serious.
For this reason, the utility model provides a kind of compressor pump body structure, comprise: bent axle and lower flange, bent axle comprises: major axis, minor axis and be connected eccentric shaft between the two, minor axis has first fitting surface, lower flange has second fitting surface that matches with first fitting surface, and first fitting surface is a sphere.
Further, sphere is hemisphere face or the playing surface of the table or spherical crown surface.
Further, the diameter of the sphere of minor axis is D
X, the major axis diameter of axle is D
L, wherein, 0.5D
L≤ D
X≤ 3D
L
Further, second fitting surface is provided with straight trough shape oil groove.
Further, second fitting surface is provided with helical oil groove.
Further, the end of eccentric shaft is provided with thrust surface.
Further, first fitting surface is provided with solid lubricant layer.
Further, solid lubricant layer is the molybdenum disulfide lubricating layer.
Further, lower flange is provided with nitriding high speed steel material layer, and second fitting surface is arranged on the described nitriding high speed steel material layer.
According to further improvement of the utility model, a kind of compressor also is provided, it comprises foregoing compressor pump body structure.
Because minor axis has ball-type first fitting surface and lower flange ball-type second fitting surface, minor axis of the present utility model can bear axial load, so reduced and lower flange between gauge wear, overcome mechanical loss, reduced noise and vibration, so reached eliminate tilting moment, realized self-aligning, make compressor shaft to more compact structure, strengthened the effect of having lubricated, improved compressor performance.
Description of drawings
Constitute this specification a part, be used for further understanding accompanying drawing of the present utility model and show preferred embodiment of the present utility model, and be used for illustrating principle of the present utility model with specification.Among the figure:
Fig. 1 has schematically shown existing compressor pump body structure;
Fig. 2 has schematically shown the utility model embodiment's compressor pump body structure, and wherein, bent axle is provided with thrust surface;
Fig. 3 has schematically shown the structure according to second fitting surface of the utility model embodiment's lower flange;
Fig. 4 has schematically shown the straight trough structure according to the utility model embodiment's lower flange;
Fig. 5 has schematically shown the helical groove structure according to the utility model embodiment's lower flange;
Fig. 6 has schematically shown the crankshaft structure according to the utility model embodiment; And
Fig. 7 has schematically shown the utility model embodiment's compressor pump body structure, and wherein, bent axle is not provided with thrust surface.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
As shown in Figure 2, the compressor pump body structure according to embodiment of the present utility model comprises: bent axle 1, upper flange 5 and lower flange 3 and cylinder 7.Cylinder 7 is installed between upper flange 5 and the lower flange 3.Bent axle 1 passes upper flange 5 and lower flange 3 and cylinder 7.Bent axle 1 comprises: major axis 13, minor axis 15 and be connected eccentric shaft 11 between the two.Minor axis 15 of the present utility model adopts spherical plain bearing.The minor axis 15 that matches with lower flange 3 has first fitting surface, and first fitting surface is the spherical outer surface of minor axis 15.Bent axle 1 is rotated under the drive of motor, and the roller (not shown) is placed on the eccentric shaft 11 of bent axle 1, and the gas in the cylinder 7 is compressed.As shown in Figure 3, lower flange 3 has second fitting surface, 31, the second fitting surfaces 31 that match with first fitting surface and can be spherical inside surface, i.e. ball-type supporting surface.Along with the drive of motor (not shown), the pump housing has just been finished the whole process from air-breathing to compression like this.In the rotation of bent axle 1, formed the ball-type revolute pair between first fitting surface and second fitting surface and contacted.The spherical plain bearing structure of the minor axis 15 of this bent axle 1 both can have been born load radially, also can bear axial load, both can be used as sliding bearing and also can be used as thrust-bearing.Like this, reduced the gauge wear between bent axle and the lower flange, overcome mechanical loss, reduced noise and vibration.
And then, first fitting surface of bent axle 1 is spherical, be that stressed supporting surface is a spherical surface, the N (not shown among Fig. 2) that makes a concerted effort of the holding power at each stressed place is positioned on the medial axis of bent axle 1 on the spherical surface, therefore the gravity G (not shown among Fig. 2) with bent axle and rotor is positioned on the straight line, so, eliminated tilting moment, reduce the friction with last lower flange, improved mechanical efficiency.
In addition, bent axle has become the contact of ball-type revolute pair with contacting from traditional line contact of lower flange, in the crankshaft operation process, can compensate automatically because the coaxiality error that distortion produced the when amount of deflection of bent axle and operation, can effectively reduce wearing and tearing and friction power loss, realize the self-aligning function.
Preferably, as shown in Figure 2, the sphere of first fitting surface is that hemisphere face or the playing surface of the table or spherical crown surface or other can make minor axis 15 can bear the curved surface of radial load in rotating.Like this, in rotation, can make minor axis 15 bear radial load.Preferably, the hemisphere face or the playing surface of the table or spherical crown surface are convenient to processing.Preferably, as shown in Figure 2, the diameter of the sphere of the minor axis 15 of compressor pump body structure is D
X, major axis 13 diameters of axle are D
L, wherein, 0.5D
L≤ D
X≤ 3D
LThe degree that can reduce wear like this reaches bent axle rigidity and matching requirements.
The utility model can be offered oilhole at the center of lower flange and bent axle, mode by installing the Oil Guide sheet additional is to the pump body structure fuel feeding, lubricated each moving element, also can be according to the sense of rotation of bent axle and carrying and non-bearing situation in whole press cycles, select suitable zone, on the ball-type supporting surface of lower flange, offer oil groove and (comprise straight trough type or spirality type, oil groove can be communicated with the opening 33 on the lower flange, so that form oil circuit), lubricating between the minor axis of enhancing bent axle and the lower flange come lubricated better each kinematic pair.
Preferably, as shown in Figure 4, second fitting surface 31 is provided with straight trough shape oil groove 311.Whole straight trough shape oil groove 311 is in the same plane, and is with the curvilinerar figure oil groove (for example, helical oil groove) that is different from other shapes, like this, easy to process.
Preferably, as shown in Figure 5, second fitting surface is provided with helical oil groove 311.Can improve fuel delivery like this, play better lubrication, more help the formation of oil film.
As shown in Figure 6, the end of the eccentric shaft 11 of compressor pump body structure is provided with thrust surface 111, can prevent the axial runout of bent axle further, simultaneously, because the existence of spherical first fitting surface, even adopt thrust surface to carry out also can not producing tilting moment when spacing.
Preferably, solid lubricant layer is the molybdenum disulfide lubricating layer.Molybdenum disulfide has lubrication effect preferably.
Preferably, lower flange can be used all better material of hardness and wear resistance instead, and material can be an alloy material, also can be that the nitriding high speed steel material substitutes powder metallurgy or cast iron materials, second fitting surface 31 after the fine finishing is arranged in the lower flange, for example is embedded in the lower flange, to reduce wearing and tearing.
As shown in Figure 2, according to another aspect of the present utility model, also provide a kind of compressor, it comprises foregoing compressor pump body structure.As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
Reduced mechanical wear and noise and vibration, reached the elimination tilting moment, realize self-aligning, made compressor shaft to more compact structure, the lubricated effect that reduces to wear and tear, improve compressor performance of enhancing.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. compressor pump body structure, comprise: bent axle (1) and lower flange (3), described bent axle (1) comprising: major axis (13), minor axis (15) and be connected eccentric shaft (11) between the two, described minor axis (15) has first fitting surface, described lower flange (3) has second fitting surface (31) that matches with described first fitting surface, it is characterized in that described first fitting surface is a sphere.
2. compressor pump body structure according to claim 1 is characterized in that, described sphere is hemisphere face or the playing surface of the table or spherical crown surface.
3. compressor pump body structure according to claim 1 is characterized in that, the diameter of the sphere of described minor axis (15) is D
X, described major axis (13) diameter of axle is D
L, wherein, 0.5D
L≤ D
X≤ 3D
L
4. compressor pump body structure according to claim 3 is characterized in that, described second fitting surface (31) is provided with straight trough shape oil groove (311).
5. compressor pump body structure according to claim 3 is characterized in that, described second fitting surface (31) is provided with helical oil groove (311).
6. compressor pump body structure according to claim 5 is characterized in that, the end of described eccentric shaft (11) is provided with thrust surface (111).
7. compressor pump body structure according to claim 3 is characterized in that, described first fitting surface is provided with solid lubricant layer.
8. compressor pump body structure according to claim 7 is characterized in that, described solid lubricant layer is the molybdenum disulfide lubricating layer.
9. compressor pump body structure according to claim 3 is characterized in that, described lower flange (3) is provided with nitriding high speed steel material layer, and described second fitting surface (31) is arranged on the described nitriding high speed steel material layer.
10. a compressor is characterized in that, comprises each described compressor pump body structure in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202149520U CN201687711U (en) | 2010-05-21 | 2010-05-21 | Compressor pump body structure and compressor with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202149520U CN201687711U (en) | 2010-05-21 | 2010-05-21 | Compressor pump body structure and compressor with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687711U true CN201687711U (en) | 2010-12-29 |
Family
ID=43375994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202149520U Expired - Lifetime CN201687711U (en) | 2010-05-21 | 2010-05-21 | Compressor pump body structure and compressor with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687711U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251953A (en) * | 2010-05-21 | 2011-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure of compressor and compressor with same |
| CN102966547A (en) * | 2011-09-01 | 2013-03-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary supporting lubrication structure of rotary type compressor |
-
2010
- 2010-05-21 CN CN2010202149520U patent/CN201687711U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251953A (en) * | 2010-05-21 | 2011-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure of compressor and compressor with same |
| CN102251953B (en) * | 2010-05-21 | 2013-08-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure of compressor and compressor with same |
| CN102966547A (en) * | 2011-09-01 | 2013-03-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotary supporting lubrication structure of rotary type compressor |
| CN102966547B (en) * | 2011-09-01 | 2015-12-16 | 珠海格力节能环保制冷技术研究中心有限公司 | The revolving support lubricating structure of rotary compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101229 Effective date of abandoning: 20130828 |
|
| RGAV | Abandon patent right to avoid regrant |