CN204941961U - Rotary compressor and there is its freezing cycle device - Google Patents
Rotary compressor and there is its freezing cycle device Download PDFInfo
- Publication number
- CN204941961U CN204941961U CN201520639178.0U CN201520639178U CN204941961U CN 204941961 U CN204941961 U CN 204941961U CN 201520639178 U CN201520639178 U CN 201520639178U CN 204941961 U CN204941961 U CN 204941961U
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- Prior art keywords
- rotary compressor
- main bearing
- bearing
- oil supply
- utility
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Abstract
The utility model discloses a kind of rotary compressor and have its freezing cycle device, described rotary compressor comprises cylinder assembly, main bearing and supplementary bearing.Main bearing is located at the top of cylinder assembly, and the inner peripheral surface of main bearing is formed with the first oil supply that the axial screw along main bearing extends, the axial angle of the first oil supply is θ
1; Supplementary bearing is located at the bottom of cylinder assembly, and the inner peripheral surface of supplementary bearing is formed with the second oil supply that the axial screw along supplementary bearing extends, the axial angle of the second oil supply is θ
2, wherein, θ
1, θ
2meet: θ
1> θ
2.According to rotary compressor of the present utility model, by making the axial angle θ of the first oil supply on main bearing
1with the axial angle θ of the second oil supply on supplementary bearing
2meet: θ
1> θ
2, the fuel feeding of main bearing can be ensured thus, thus the main bearing of rotary compressor can be made to obtain good lubrication, and then rotary compressor can be made to obtain high energy efficiency.
Description
Technical field
The utility model relates to Compressor Technology field, especially relates to a kind of rotary compressor and has its freezing cycle device.
Background technique
Rotary compressor in correlation technique utilizes piston to be arranged on bent axle, rotates and reduce volume, thus realize the compression of refrigerant in cylinder.The compression assembly of rotary compressor is by being bearing in the main bearing of bent axle bottom and supplementary bearing, at least one cylinder between main bearing and supplementary bearing, being located in cylinder and forming with the piston that crankshaft eccentric portion is connected to form.
The inner peripheral surface of the master/slave bearing of this rotary compressor is provided with oil supply, and main bearing places get Geng Gao than supplementary bearing position.During rotary compressor running, along with crankshaft operation, lubricant oil carries out fuel feeding from major and minor axle oil supply to pivot friction pair.Because the height H of usual main bearing is higher than the height h of supplementary bearing, bent axle occurs bending and deformation in running simultaneously, and the internal diameter of main bearing is more difficult for the internal diameter fuel feeding of oil ratio supplementary bearing.Traditional structural design is that the oil groove pitch of major and minor bearing is identical, and oil groove radius is identical with the degree of depth, improves the supply capability of major and minor bearing by strengthening oil groove sectional area.
Refrigerator oil flows on oil supply, takes away frictional heat to while friction lubricating, prevents friction pair from wearing and tearing, sinters.Because the fuel feeding of major and minor bearing is all from central hole of the crankshaft, if the supply capability of supplementary bearing is larger than main bearing, the supply capability of main bearing will be weakened further.Height h due to supplementary bearing is less than the height H of main bearing, the friction area of supplementary bearing is less than the friction area of main bearing, so the frictional heat of supplementary bearing is less than the frictional heat of main bearing, the fuel delivery of the fuel delivery needs more secondary than main bearing friction that supplementary bearing friction pair needs is little.But the fuel delivery that main bearing friction pair needs is excessive, can strengthen refrigerator oil and flow out from main bearing upper end, mix with the refrigerant of surrounding, increase refrigerator oil and discharge compressor probability with refrigerant, thus reduce the refrigerating capacity of rotary compressor, rotary compressor performance reduces.
Model utility content
The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the utility model proposes a kind of rotary compressor, this rotary compressor lubrication is good, efficiency is high.
Another object of the present utility model is to propose a kind of freezing cycle device with above-mentioned rotary compressor.
According to the rotary compressor of the utility model first aspect embodiment, comprising: cylinder assembly; Main bearing, described main bearing is located at the top of described cylinder assembly, and the inner peripheral surface of described main bearing is formed with the first oil supply that the axial screw along described main bearing extends, the axial angle of described first oil supply is θ
1; And supplementary bearing, described supplementary bearing is located at the bottom of described cylinder assembly, and the inner peripheral surface of described supplementary bearing is formed with the second oil supply that the axial screw along described supplementary bearing extends, the axial angle of described second oil supply is θ
2, wherein, described θ
1, θ
2meet: θ
1> θ
2.
According to the rotary compressor of the utility model embodiment, by making the axial angle θ of the first oil supply on main bearing
1with the axial angle θ of the second oil supply on supplementary bearing
2meet: θ
1> θ
2, the fuel feeding of main bearing can be ensured thus, thus the main bearing of rotary compressor can be made to obtain good lubrication, and then rotary compressor can be made to obtain high energy efficiency.
According to embodiments more of the present utility model, the area of the inner peripheral surface of described main bearing is S
1, the area of the inner peripheral surface of described supplementary bearing is S
2, described S
1, S
2meet: 2.15≤S
1/ S
2≤ 3.6.
According to embodiments more of the present utility model, described θ
1meet further: 15 °≤θ
1≤ 30 °.
According to embodiments more of the present utility model, the bottom surface of described main bearing is formed with the first groove, the inner circle wall of the contiguous described main bearing of described first groove is arranged.
Alternatively, described first groove type becomes annular.
According to embodiments more of the present utility model, the end face of described supplementary bearing is formed with the second groove, the inner circle wall of the contiguous described supplementary bearing of described second groove is arranged.
According to embodiments more of the present utility model, described cylinder assembly comprises a cylinder.
According to other embodiments of the present utility model, described cylinder assembly comprises multiple cylinder, is provided with dividing plate between adjacent two described cylinders.
According to the freezing cycle device of the utility model second aspect embodiment, comprise the rotary compressor according to the above-mentioned first aspect embodiment of the utility model.
According to the freezing cycle device of the utility model embodiment, by being provided with above-mentioned rotary compressor, the performance of freezing cycle device can be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the rotary compressor according to the utility model embodiment;
Fig. 2 is the structural representation of the main bearing of rotary compressor according to the utility model embodiment;
Fig. 3 is the structural representation of the supplementary bearing of rotary compressor according to the utility model embodiment;
Fig. 4 is the S of the rotary compressor according to the utility model embodiment
1/ S
2with the relation schematic diagram of COP (CoefficientofPerformance, Energy Efficiency Ratio);
Fig. 5 is the axial angle θ of the first oil supply of rotary compressor according to the utility model embodiment
1with the relation schematic diagram of COP (CoefficientofPerformance, Energy Efficiency Ratio).
Reference character:
Main bearing 1, the first oil supply 11, first groove 12,
Supplementary bearing 2, the second oil supply 21, second groove 22,
Cylinder 3, housing 4, motor 5, bent axle 6.
Embodiment
Be described below in detail embodiment of the present utility model, 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 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, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, " top ", " end " " interior ", " outward ", " axis ", " radial direction ", " circumference " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
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 description of the present utility model, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the utility model, 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, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
The rotary compressor according to the utility model embodiment is described in detail below with reference to Fig. 1-Fig. 5.
As shown in Figure 1-Figure 3, according to the rotary compressor of the utility model first aspect embodiment, comprise cylinder assembly, main bearing 1 and supplementary bearing 2.
As shown in Figure 1, this rotary compressor also comprises housing 4, motor 5 and bent axle 6.Specifically, cylinder assembly, main bearing 1, supplementary bearing 2, motor 5 and bent axle 6 are all located in housing 4, and main bearing 1 is located at the top of cylinder assembly, and supplementary bearing 2 is located at the bottom of cylinder assembly, and motor 5 is positioned at the top of main bearing 1.The upper end of bent axle 6 is connected with motor 5, and the lower end of bent axle 6 runs through main bearing 1, cylinder assembly and supplementary bearing 2 successively, and motor 5 driving crank 6 rotates to make rotary compressor carry out work.Be understandable that, cylinder assembly can comprise a cylinder 3 (as shown in Figure 1), also can comprise multiple cylinder 3 (scheming not shown).When cylinder assembly comprises multiple cylinder 3, be provided with dividing plate (scheming not shown) between two adjacent cylinders 3 to be separated by adjacent cylinder 3.
Wherein, when rotary compressor works, the inner peripheral surface of main bearing 1 and the outer circumferential face of bent axle 6 form the first friction pair, and the inner peripheral surface of supplementary bearing 2 and the outer circumferential face of bent axle 6 form the second friction pair.As shown in Figure 2, the inner peripheral surface of main bearing 1 is formed with the first oil supply 11 that the axial screw along main bearing 1 extends, first oil supply 11 is for the first friction pair fuel feeding, in first oil supply 11, the lubricant oil of flowing can take away the heat that the first friction pair produces while lubricating the first friction pair, can prevent the first friction pair wearing and tearing, sintering thus.Wherein, the axial angle of the first oil supply 11 is θ
1(the axial angle θ of the first oil supply 11
1be the angle between the center line of the projection of the first oil supply 11 on the axial plane of main bearing 1 and the central axis of main bearing 1).
As shown in Figure 3, the inner peripheral surface of supplementary bearing 2 is formed with the second oil supply 21 that the axial screw along main bearing 1 extends, second oil supply 21 is for carrying out fuel feeding to the second friction pair, in second oil supply 21, the oil of flowing can take away the heat that the second friction pair produces while lubricating the second friction pair, can prevent the second friction pair wearing and tearing, sintering thus, the axial angle of the second oil supply 21 is θ
2(the axial angle θ of the second oil supply 21
2be the angle of the center line of the projecting figure of the second oil supply 21 on the axial plane of supplementary bearing 2 and the central axis of supplementary bearing 2), wherein, θ
1, θ
2meet: θ
1> θ
2, thus, the fuel feeding of main bearing 1 can be ensured, thus the main bearing 1 of rotary compressor can be made to obtain good lubrication, and then rotary compressor can be made to obtain high energy efficiency.
In the example shown in Fig. 2 and Fig. 3, the internal diameter of main bearing 1 and supplementary bearing 2 is respectively D, d, and the pitch of the first oil supply 11 and the second oil supply 21 is respectively M, m (scheming not shown), the axial angle θ of the first oil supply 11 on main bearing 1
1=360 ° of * arctan (π D/M)/(2 π), the axial angle θ of the second oil supply 21 on supplementary bearing 2
2=360 ° of * arctan (π d/m)/(2 π), make θ
1, θ
2meet: θ
1> θ
2, namely to make D/M > d/m, the fuel feeding of main bearing 1 can be ensured thus, thus the main bearing 1 of rotary compressor can be made to obtain good lubrication.Such as, the inner diameter values of main bearing 1 and supplementary bearing 2 is respectively D=21mm, d=18mm, and the pitch of the first oil supply 11 and the second oil supply 21 is respectively M=180mm, m=160mm, according to above-mentioned θ
1, θ
2formula can calculate the axial angle θ of the first oil supply 11
1=20.13 °, the axial angle θ of the second oil supply 21
2=19.4 °, meet θ
1> θ
2, that is, the pitch of the main bearing 1 arranged in above-mentioned example and the inner diameter values of supplementary bearing 2 and the first oil supply 11 and the second oil supply 21 meets the demands, and namely can ensure the fuel feeding of main bearing 1.
According to the rotary compressor of the utility model embodiment, by making the axial angle θ of the first oil supply 11 on main bearing 1
1with the axial angle θ of the second oil supply 21 on supplementary bearing 2
2meet: θ
1> θ
2, the fuel feeding of main bearing 1 can be ensured thus, thus the main bearing 1 of rotary compressor can be made to obtain good lubrication, and then rotary compressor can be made to obtain high energy efficiency.
According to embodiments more of the present utility model, the area of the inner peripheral surface of main bearing 1 is S
1, the area of the inner peripheral surface of supplementary bearing 2 is S
2, S
1, S
2meet: 2.15≤S
1/ S
2≤ 3.6 (as shown in Figure 4, the scope of a is S
1/ S
2the more excellent scope of value), thus while the support stiffness ensureing main bearing 1 and supplementary bearing 2, also ensure that the fuel feeding of main bearing 1, thus rotary compressor can be made to obtain high energy efficiency.
In the example shown in Fig. 2 and Fig. 3, the internal diameter of main bearing 1 and supplementary bearing 2 is respectively D, d, and the height of main bearing 1 and supplementary bearing 2 is respectively H, h, the area S of the inner peripheral surface of main bearing 1
1=π DH, the area S of the inner peripheral surface of supplementary bearing 2
2=π dh, then S
1/ S
2=DH/dh.Such as, when the height value of main bearing 1 and supplementary bearing 2 is set to H=65mm, h=25mm respectively, the inner diameter values of main bearing 1 and supplementary bearing 2 is set to D=21mm, d=18mm respectively, can calculate S thus
1/ S
2=3.03, meet 2.15≤S
1/ S
2≤ 3.6, that is, the inner diameter values of the main bearing 1 arranged in above-mentioned example and the height value of supplementary bearing 2, main bearing 1 and supplementary bearing 2, can also ensure that the fuel feeding of main bearing 1 while the support stiffness ensureing main bearing 1 and supplementary bearing 2.
According to embodiments more of the present utility model, the axial angle θ of the first oil supply 11
1meet further: 15 °≤θ
1≤ 30 ° (as shown in Figure 5, the scope of b is the axial angle θ of the first oil supply 11
1the more excellent scope of value), the main bearing 1 of rotary compressor can be made thus to obtain good lubricity, thus the coefficient of performance of rotary compressor can be made to be in preferably level.
According to embodiments more of the present utility model, as shown in Figure 2, the inner circle wall bottom surface of main bearing 1 being formed with the contiguous main bearing 1 of the first groove 12, first groove 12 is arranged, and can improve partial surface pressure thus.Alternatively, the first groove 12 is formed as annular, but is not limited to above-mentioned shape.
According to embodiments more of the present utility model, as shown in Figure 3, the inner circle wall end face of supplementary bearing 2 being formed with the contiguous supplementary bearing 2 of the second groove 22, second groove 22 is arranged, and can improve partial surface pressure thus.Alternatively, the second groove 22 is formed as annular, but is not limited to above-mentioned shape.
According to the freezing cycle device of the utility model second aspect embodiment, comprise the rotary compressor according to the above-mentioned first aspect embodiment of the utility model.
According to the freezing cycle device of the utility model embodiment, by being provided with above-mentioned rotary compressor, the performance of freezing cycle device can be improved.
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 utility model 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 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, revises, replace and modification in scope of the present utility model.
Claims (9)
1. a rotary compressor, is characterized in that, comprising:
Cylinder assembly;
Main bearing, described main bearing is located at the top of described cylinder assembly, and the inner peripheral surface of described main bearing is formed with the first oil supply that the axial screw along described main bearing extends, the axial angle of described first oil supply is θ
1; And
Supplementary bearing, described supplementary bearing is located at the bottom of described cylinder assembly, and the inner peripheral surface of described supplementary bearing is formed with the second oil supply that the axial screw along described supplementary bearing extends, the axial angle of described second oil supply is θ
2, wherein, described θ
1, θ
2meet: θ
1> θ
2.
2. rotary compressor according to claim 1, is characterized in that, the area of the inner peripheral surface of described main bearing is S
1, the area of the inner peripheral surface of described supplementary bearing is S
2, described S
1, S
2meet: 2.15≤S
1/ S
2≤ 3.6.
3. rotary compressor according to claim 1, is characterized in that, described θ
1meet further: 15 °≤θ
1≤ 30 °.
4. according to the rotary compressor described in claim 1-3, it is characterized in that, the bottom surface of described main bearing is formed with the first groove, the inner circle wall of the contiguous described main bearing of described first groove is arranged.
5. rotary compressor according to claim 4, is characterized in that, described first groove type becomes annular.
6. rotary compressor according to claim 1, is characterized in that, the end face of described supplementary bearing is formed with the second groove, and the inner circle wall of the contiguous described supplementary bearing of described second groove is arranged.
7. rotary compressor according to claim 1, is characterized in that, described cylinder assembly comprises a cylinder.
8. rotary compressor according to claim 1, is characterized in that, described cylinder assembly comprises multiple cylinder, is provided with dividing plate between adjacent two described cylinders.
9. a freezing cycle device, is characterized in that, comprises the rotary compressor according to any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520639178.0U CN204941961U (en) | 2015-08-21 | 2015-08-21 | Rotary compressor and there is its freezing cycle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520639178.0U CN204941961U (en) | 2015-08-21 | 2015-08-21 | Rotary compressor and there is its freezing cycle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941961U true CN204941961U (en) | 2016-01-06 |
Family
ID=55009399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520639178.0U Withdrawn - After Issue CN204941961U (en) | 2015-08-21 | 2015-08-21 | Rotary compressor and there is its freezing cycle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941961U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090042A (en) * | 2015-08-21 | 2015-11-25 | 广东美芝制冷设备有限公司 | Rotary compressor and freezing circulating device with same |
| CN105649984A (en) * | 2016-03-10 | 2016-06-08 | 广东美芝制冷设备有限公司 | Compressing mechanism and low-backpressure rotary compressor |
| CN111287975A (en) * | 2018-12-10 | 2020-06-16 | 广东美芝精密制造有限公司 | Pump body subassembly and compressor |
-
2015
- 2015-08-21 CN CN201520639178.0U patent/CN204941961U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090042A (en) * | 2015-08-21 | 2015-11-25 | 广东美芝制冷设备有限公司 | Rotary compressor and freezing circulating device with same |
| CN105649984A (en) * | 2016-03-10 | 2016-06-08 | 广东美芝制冷设备有限公司 | Compressing mechanism and low-backpressure rotary compressor |
| CN111287975A (en) * | 2018-12-10 | 2020-06-16 | 广东美芝精密制造有限公司 | Pump body subassembly and compressor |
| CN111287975B (en) * | 2018-12-10 | 2022-04-22 | 广东美芝精密制造有限公司 | Pump body subassembly 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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160106 Effective date of abandoning: 20171114 |