CN203717352U - Compressing pump body of rotary compressor - Google Patents
Compressing pump body of rotary compressor Download PDFInfo
- Publication number
- CN203717352U CN203717352U CN201320864121.1U CN201320864121U CN203717352U CN 203717352 U CN203717352 U CN 203717352U CN 201320864121 U CN201320864121 U CN 201320864121U CN 203717352 U CN203717352 U CN 203717352U
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- China
- Prior art keywords
- lower bearing
- groove
- rotary compressor
- pump housing
- compression pump
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Abstract
The utility model discloses a compressing pump body of a rotary compressor. The compressing pump body comprises a cylinder component, an upper bearing, an lower bearing and a crankshaft, wherein the cylinder component comprises at least one cylinder; the upper bearing and the lower bearing are respectively arranged on the upper surface and the lower surface of the cylinder component; a groove is formed in the end surface of the lower bearing, which is towards the cylinder component; the crankshaft penetrates through the upper bearing, the cylinder component and the lower bearing; the inner diameter of the cylinder tightly attached to the lower bearing is Dcy; the radius of the eccentric shaft shoulder of the crankshaft is Rcr; the eccentric amount of the crankshaft is e; the groove is within an annular area which is located on the end surface of the lower bearing, which is towards the cylinder component; the central axis of the annular area is overlapped with that of the crankshaft; the outer diameter Dw and the inner diameter Dn of the annular area satisfy the expressions: Dw is smaller than (Dc -4e) and Dn is larger than 2Rcr. According to the compressing pump body of the rotary compressor, the contact area between a piston and the lower bearing is lessened and the friction loss is reduced.
Description
Technical field
The utility model relates to refrigerating field, especially relates to a kind of compression pump housing of rotary compressor.
Background technique
In order to improve the efficiency of compressor, the compressor in correlation technique is compressed structure, to optimize the frictional loss between each moving element.(V=π e(D-e) H in the situation that discharge volume is certain), the high H of cylinder and crankshaft eccentric portion external diameter are constant, and D is larger in cylinder footpath, and the eccentric amount e of bent axle is less, and now piston is also larger.It is large that piston becomes, and it is large that weight becomes, and also increases with the area of contact of lower bearing, and frictional loss is corresponding increase also, thereby has reduced the effect of improving of compressed structure.
Model utility content
The utility model is intended to solve at least to a certain extent one of above-mentioned technical problem of the prior art.For this reason, an object of the present utility model is to propose a kind of compression pump housing of rotary compressor, has reduced the area of contact between piston and lower bearing, has reduced frictional loss.
The compression pump housing according to rotary compressor of the present utility model, comprising: cylinder assembly, and described cylinder assembly comprises at least one cylinder, upper bearing (metal) and lower bearing, described upper bearing (metal) and described lower bearing be located at respectively described cylinder assembly above and below, the end face towards described cylinder assembly of described lower bearing is provided with groove, bent axle, described bent axle runs through described upper bearing (metal), described cylinder assembly and described lower bearing, wherein, the internal diameter of the described cylinder of being close to described lower bearing is Dcy, the radius of the eccentric shaft shoulder of described bent axle is Rcr, the offset of described bent axle is e, described groove is positioned at annular region, described annular region be positioned at described lower bearing on the end face of described cylinder assembly, the central axis of described annular region and the central axes of described bent axle, the outer diameter D w of described annular region and inside diameter D n meet following relation: Dw < (Dcy-4e), Dn > 2Rcr.
According to the compression pump housing of rotary compressor of the present utility model, by being provided with groove at lower bearing on the end face of cylinder assembly, thereby reduced the area of contact between piston and lower bearing, reduced frictional loss, while is due to the oil storage function of groove, improve the lubrication effect of the contact surface between piston and lower bearing, further reduced frictional loss.By groove is arranged in annular region, guarantee the reliability of the compressor pump running body of rotary compressor simultaneously, avoided occurring the problems such as leakage.
In embodiments more of the present utility model, described groove type becomes annular groove.
In embodiments more of the present utility model, described lower bearing is provided with communicating passage, one end of described communicating passage and described groove conducting, and the other end of described communicating passage extends to the inner circle wall of described lower bearing.Thereby reduced the frictional loss between lower bearing and bent axle, improved the efficiency of the compression pump housing of rotary compressor.
In other embodiments of the present utility model, described groove comprises a plurality of spaced sub-grooves.
Alternatively, described in each sub-groove be shaped as circle.
Alternatively, described in each sub-groove be shaped as long-round-shape.
Preferably, described a plurality of sub-groove is evenly spaced apart around the central axis of described bent axle.
Particularly, described groove is casting machine shaping part or machining moulding part.。
In embodiments more of the present utility model, described cylinder assembly comprises two cylinders, between described two cylinders, is provided with dividing plate.
Accompanying drawing explanation
Fig. 1 is according to the sectional drawing of the compression pump housing of the utility model embodiment's rotary compressor;
Fig. 2 is according to the fragmentary cross-sectional view of the compression pump housing of the utility model embodiment's rotary compressor;
Fig. 3 is according to the schematic diagram of the annular region in the compression pump housing of the utility model embodiment's rotary compressor;
Fig. 4 is according to the schematic diagram of an embodiment's of the utility model groove;
Fig. 5 is according to the schematic diagram of another embodiment's of the utility model groove;
Fig. 6 is according to the schematic diagram of another embodiment's of the utility model groove.
Reference character:
The compression pump housing 100 of rotary compressor, cylinder 1, upper bearing (metal) 2, lower bearing 3, groove 30, sub-groove 301, annular region 31, communicating passage 32, bent axle 4, eccentric part 40, the eccentric shaft shoulder 41, piston 5, slide plate 6
Embodiment
Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; It can be mechanical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
Below with reference to Fig. 1-Fig. 6, describe according to the compression pump housing 100 of the utility model embodiment's rotary compressor, this compression pump housing 100 coordinates to be assembled into rotary compressor with motor, housing etc.
As shown in Fig. 1-Fig. 6, the compression pump housing 100 according to the utility model embodiment's rotary compressor, comprising: cylinder assembly, upper bearing (metal) 2, lower bearing 3 and bent axle 4, wherein, cylinder assembly comprises at least one cylinder 1.Upper bearing (metal) 2 and lower bearing 3 be located at respectively cylinder assembly above and below, the end face towards cylinder assembly of lower bearing 3 is provided with groove 30.Particularly, groove 30 is casting machine shaping part or machining moulding part, that is to say, groove 30 can be that casting forms, and can be also that machining forms.
Particularly, as shown in Figure 1, when the compression pump housing 100 of rotary compressor is the compression pump housing of single cylinder rotary compressor, cylinder assembly only includes a cylinder 1, upper bearing (metal) 2 and lower bearing 3 be located at respectively cylinder 1 above and below, upper bearing (metal) 2, cylinder 1 and lower bearing 3 limit a cylinder chamber.When the compression pump housing 100 of rotary compressor is during for the compression pump housing of twin-tub rotation-type compressor (scheming not shown), cylinder assembly comprises along the bearing of trend of bent axle 4 two cylinders 1 spaced apart, and be provided with dividing plate between two cylinders 1, two cylinders 1 are respectively the first cylinder and the second cylinder, the first cylinder is positioned at the top of the second cylinder, now upper bearing (metal) 2 be located at the first cylinder above, upper bearing (metal) 2, between the first cylinder and dividing plate, limit a cylinder chamber, lower bearing 3 be located at the second cylinder below, dividing plate, between the second cylinder and lower bearing 3, limit another cylinder chamber.Certainly it should be noted that, the compression pump housing 100 of rotary compressor also can be the compression pump housing of multi-cylinder rotary compressor, now the matching relationship between upper bearing (metal) 2, lower bearing 3 and cylinder assembly is similar to the matching relationship of the compression pump housing of twin-tub rotation-type compressor, is just no longer repeated in this description here.
Bent axle 4 runs through upper bearing (metal) 2, cylinder assembly and lower bearing 3, bent axle 4 has eccentric part 40 and the eccentric shaft shoulder 41, in bent axle 4, be provided with center oilhole and oil outlet simultaneously, wherein, the internal diameter of the cylinder 1 of being close to lower bearing 3 is Dcy, the radius of the eccentric shaft shoulder 41 of bent axle 4 is Rcr, the offset of bent axle 4 is e, groove 30 is positioned at annular region 31, annular region 31 be positioned at lower bearing 3 on the end face of cylinder assembly, the central axes of the central axis of annular region 31 and bent axle 4, the outer diameter D w of annular region 31 and inside diameter D n meet following relation: Dw < (Dcy-4e), Dn > 2Rcr.Wherein, as shown in Figure 2, the eccentric amount e of bent axle 4 refers to the central axis of eccentric part 40 of bent axle 4 and the distance between the central axis of bent axle 4.As shown in Figure 2, the radius R cr of the eccentric shaft shoulder 41 of bent axle 4 refers to the outer circumferential face of the eccentric shaft shoulder 41 of bent axle 4 and the distance between the central axis of bent axle 4 simultaneously.
It should be noted that, the compression pump housing 100 of rotary compressor also comprises piston 5 and slide plate 6, in each cylinder chamber, be provided with a piston 5 and slide plate 6, outside each piston 5, be enclosed within on the eccentric part 40 of bent axle 4, the tip of each slide plate 6 is only against on the outer surface of corresponding piston 5, bent axle 4 drives piston 5 eccentric rotary in corresponding cylinder chamber while rotating, when piston 5 eccentric rotary, drive slide plate 6 to move.Wherein contact with lower bearing 3 with the piston 5 in the cylinder of being close to 1 of lower bearing 3.Certainly be worth understanding, the compression pump housing 100 of rotary compressor also comprises the elements such as baffler, outlet valve, and the working principle of the compression pump housing 100 of rotary compressor etc. is prior art, is not just described in detail here.
Particularly, because the end face towards cylinder assembly of lower bearing 3 is provided with groove 30, now can reduce the area of contact between lower bearing 3 and piston 5, thereby reduce the frictional loss of piston 5, wherein, the outer diameter D w of annular region 31 can not surpass the running orbit Dcy-4e scope of piston 5, otherwise can there are other, reveals, and produces reaction.Simultaneously, lower bearing 3 also plays the effect of supporting bent axle 4, the eccentric shaft shoulder 41 of bent axle 4 can not arrange groove 30 to reduce area of contact with the contact position of lower bearing 3, because now can increase the pressure-bearing of unit area and worsen reliability, therefore, the inside diameter D n of the annular region 31 of the groove 30 of setting must be greater than the running orbit 2Rcr of the eccentric shaft shoulder 41 of bent axle 4.
Now because the space forming between groove 30 and the inner circle wall of piston 5 and the eccentric shaft shoulder 41 of bent axle 4 is communicated with, the oil that the oil outlet of bent axle 4 is discharged can enter in groove 30, oil storage effect due to groove 30, thereby increased the lubrication effect that oil film pressure has improved contact surface between piston 5 and lower bearing 3, further reduced frictional loss.
According to the compression pump housing 100 of the utility model embodiment's rotary compressor, by being provided with groove 30 at lower bearing 3 on the end face of cylinder assembly, thereby reduced the area of contact between piston 5 and lower bearing 3, reduced frictional loss, while is due to the oil storage function of groove 30, the lubrication effect that has improved the contact surface between piston 5 and lower bearing 3, has further reduced frictional loss.By groove 30 is arranged in annular region 31, guarantee the compression pump housing 100 reliabilities of operation of rotary compressor simultaneously, avoided occurring the problems such as leakage.
In some embodiments of model utility, as shown in Figure 4, lower bearing 3 is provided with communicating passage 32, one end of communicating passage 32 and groove 30 conductings, and the other end of communicating passage 32 extends to the inner circle wall of lower bearing 3.That is to say, communicating passage 32 directs into the oil in groove 30 on the inner circle wall of lower bearing 3, thereby has reduced the frictional loss between lower bearing 3 and bent axle 4, improves the efficiency of the compression pump housing 100 of rotary compressor.
As shown in Figure 4, in embodiments more of the present utility model, groove 30 forms annular groove.As shown in Figure 5 and Figure 6, in other embodiments of the present utility model, groove 30 comprises a plurality of spaced sub-grooves 301.Preferably, the central axis of a plurality of sub-groove 301 flexing axles 4 is evenly spaced apart.In the example of Fig. 5, groove 30 comprises four even sub-grooves 301 spaced apart, every sub-groove 301 be shaped as long-round-shape.In the example of Fig. 6, groove 30 comprises eight even sub-grooves 301 spaced apart, every sub-groove 301 be shaped as circle.Certainly be worth understanding, the shape of every sub-groove 301 is not limited to this, and every sub-groove 301 also can form irregularly shaped.A plurality of sub-groove 301 shapes can be the same or different simultaneously.In sum, the shape of groove 30 can be regular, can be also irregular, can be continuous, can be also interrupted.
According to the compression pump housing 100 of the utility model embodiment's rotary compressor, by be provided with groove 30 on lower bearing 3, can reduce the area of contact between piston 5 and lower bearing 3, can also utilize the oil storage function of groove 30 simultaneously, further reduce the frictional loss between piston 5 and lower bearing 3, promote the efficiency of the compression pump housing 100 of rotary compressor.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.In addition, those skilled in the art can engage the different embodiments that describe in this specification or example and combine.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, modification, replacement and modification.
Claims (9)
1. a compression pump housing for rotary compressor, is characterized in that, comprising:
Cylinder assembly, described cylinder assembly comprises at least one cylinder;
Upper bearing (metal) and lower bearing, described upper bearing (metal) and described lower bearing be located at respectively described cylinder assembly above and below, the end face towards described cylinder assembly of described lower bearing is provided with groove;
Bent axle, described bent axle runs through described upper bearing (metal), described cylinder assembly and described lower bearing, wherein, the internal diameter of the described cylinder of being close to described lower bearing is Dcy, the radius of the eccentric shaft shoulder of described bent axle is Rcr, the offset of described bent axle is e, described groove is positioned at annular region, described annular region be positioned at described lower bearing on the end face of described cylinder assembly, the central axis of described annular region and the central axes of described bent axle, the outer diameter D w of described annular region and inside diameter D n meet following relation: Dw < (Dcy-4e), Dn > 2Rcr.
2. the compression pump housing of rotary compressor according to claim 1, is characterized in that, described groove type becomes annular groove.
3. the compression pump housing of rotary compressor according to claim 1 and 2, it is characterized in that, described lower bearing is provided with communicating passage, one end of described communicating passage and described groove conducting, and the other end of described communicating passage extends to the inner circle wall of described lower bearing.
4. the compression pump housing of rotary compressor according to claim 1, is characterized in that, described groove comprises a plurality of spaced sub-grooves.
5. the compression pump housing of rotary compressor according to claim 4, is characterized in that, described in each, sub-groove is shaped as circle.
6. the compression pump housing of rotary compressor according to claim 4, is characterized in that, described in each, sub-groove is shaped as long-round-shape.
7. the compression pump housing of rotary compressor according to claim 4, is characterized in that, described a plurality of sub-grooves are evenly spaced apart around the central axis of described bent axle.
8. the compression pump housing of rotary compressor according to claim 1, is characterized in that, described groove is casting machine shaping part or machining moulding part.
9. the compression pump housing of rotary compressor according to claim 1, is characterized in that, described cylinder assembly comprises two cylinders, between described two cylinders, is provided with dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864121.1U CN203717352U (en) | 2013-12-25 | 2013-12-25 | Compressing pump body of rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864121.1U CN203717352U (en) | 2013-12-25 | 2013-12-25 | Compressing pump body of rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717352U true CN203717352U (en) | 2014-07-16 |
Family
ID=51156510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320864121.1U Withdrawn - After Issue CN203717352U (en) | 2013-12-25 | 2013-12-25 | Compressing pump body of rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717352U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742414A (en) * | 2013-12-25 | 2014-04-23 | 广东美芝精密制造有限公司 | Compression pump body of rotary compressor |
| CN113494456A (en) * | 2020-04-07 | 2021-10-12 | 广东美芝制冷设备有限公司 | Bearing for compressor and compressor |
-
2013
- 2013-12-25 CN CN201320864121.1U patent/CN203717352U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742414A (en) * | 2013-12-25 | 2014-04-23 | 广东美芝精密制造有限公司 | Compression pump body of rotary compressor |
| CN103742414B (en) * | 2013-12-25 | 2016-03-16 | 广东美芝精密制造有限公司 | The compression pump housing of rotary compressor |
| CN113494456A (en) * | 2020-04-07 | 2021-10-12 | 广东美芝制冷设备有限公司 | Bearing for compressor and compressor |
| CN113494456B (en) * | 2020-04-07 | 2023-10-24 | 广东美芝制冷设备有限公司 | Bearing for compressor and 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: 20140716 Effective date of abandoning: 20160316 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |