CN103206376A - Rotary compressor and eccentric cam assembly - Google Patents
Rotary compressor and eccentric cam assembly Download PDFInfo
- Publication number
- CN103206376A CN103206376A CN2013100164774A CN201310016477A CN103206376A CN 103206376 A CN103206376 A CN 103206376A CN 2013100164774 A CN2013100164774 A CN 2013100164774A CN 201310016477 A CN201310016477 A CN 201310016477A CN 103206376 A CN103206376 A CN 103206376A
- Authority
- CN
- China
- Prior art keywords
- eccentric cam
- running shaft
- cylinder body
- rotary compressor
- upper flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011796 hollow space material Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 10
- 238000005057 refrigeration Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/60—Shafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Disclosed are a rotary compressor and an eccentric cam assembly. The rotary compressor is capable of reducing a maximum load applied to a rotary shaft, and the rotary compressor includes a casing, a cylinder installed at an inside the casing and configured to provide a space to compress gas, a rotary shaft disposed while passing through the cylinder, a roller configured to compress gas by rotating along an inner circumferential surface of the cylinder, and an eccentric cam integrally formed with the rotary shaft and disposed at an inside the roller, wherein the eccentric cam is disposed at an eccentric position side in a shaft direction on an axial line of the rotary shaft.
Description
Technical field
Embodiment of the present disclosure relates to a kind of rotary compressor, more particularly, relates to a kind of eccentric cam that can reduce to be applied to the rotary compressor of the maximum load on the running shaft.
Background technique
Usually, rotary compressor is configured to carry out following function: the refrigeration agent that will be configured to comprise the air-conditioning place of refrigeration cycle is compressed into high-temperature high-pressure refrigerant, and described refrigeration cycle has the continuous process of compression, condensation, expansion and evaporation by using refrigeration agent as media.
Such rotary compressor is provided with: casing, casing have the entrance that is configured to suck gas (such as air and refrigerant gas) and are configured to discharge the outlet of the gas of compression; Rotating equipment, the inside that is formed at casing produces rotating force; Compression device has running shaft, eccentric cam, roller and cylinder body, and compression device is configured to by utilizing the rotating force pressurized gas of rotating equipment.
Say that at length the bottom of running shaft is formed at rotation when passing cylinder body, and longitudinally arrange.Eccentric cam is formed on the running shaft place of cylinder interior with eccentric state, and roller is formed at the outer surface place that is arranged on eccentric cam and the pressurized gas along the interior perimeter surface rotation of cylinder body time the by eccentric cam.
At this moment, upper flange and lower flange are installed in top and the bottom of cylinder body respectively, with supporting rotating shaft rotatably.
According to total length and the cost of compressor, the total length of upper flange and lower flange can be relatively different, therefore, pressure loading may occur at the running shaft place.
Summary of the invention
Therefore, one side of the present disclosure is to provide a kind of rotary compressor that can reduce to be applied to the maximum load on the running shaft.
Another aspect of the present disclosure is to provide a kind of rotary compressor, this rotary compressor be configured to owing to eccentric cam along the axial mobile maximum load that reduces to be applied to running shaft prejudicially.
An other side part of the present disclosure will be set forth in part in the following description, and a part will by describing obviously perhaps can be understood by enforcement of the present disclosure.
According to embodiment of the present disclosure, a kind of rotary compressor comprises casing, cylinder body, running shaft, roller and eccentric cam.Cylinder body can be installed in the inside of casing and be configured to be provided for the space of pressurized gas.Running shaft can arrange when passing cylinder body.Roller can be configured to rotate and pressurized gas by the interior perimeter surface along cylinder body.Eccentric cam can form and be arranged on the inside of roller with running shaft.Eccentric cam can be arranged on the axial eccentric position place on the axis of running shaft.
Described eccentric cam can arrange prejudicially along the direction towards axial upside.
Described rotary compressor can comprise upper flange and the lower flange that the top place that is separately positioned on cylinder body and bottom are located, with supporting rotating shaft rotatably.Described eccentric cam can arrange prejudicially along the direction towards upper flange.
According to another aspect of the present disclosure, a kind of eccentric cam assembly comprises running shaft and eccentric cam.Eccentric cam can be installed on the running shaft.Eccentric cam can running shaft axially on arrange prejudicially.
Described eccentric cam can arrange prejudicially along the direction towards the upside of running shaft.
According to another aspect of the present disclosure, a kind of rotary compressor comprises gas-tight container, cylinder body, upper flange, lower flange, running shaft, eccentric cam and roller.Cylinder body can be installed in the inside of gas-tight container.When can being formed at the top that is attached to cylinder body, upper flange forms pressing chamber.Lower flange forms described pressing chamber when can be formed at the bottom that is attached to cylinder body.Running shaft can arrange when passing cylinder body.When can being configured to form with running shaft, carries out eccentric cam eccentric rotation.Roller can be attached to eccentric cam, and is configured to rotate and pressurized gas by the interior perimeter surface along cylinder body.Described eccentric cam can be arranged on the eccentric position place towards upper flange on the axis of running shaft.
As mentioned above, can reduce to be applied to maximum load on the running shaft of rotary compressor effectively.
In addition, because the position of eccentric cam is mobile along eccentric axis ground, thus reduced to be applied to the maximum load on the axle, thus compression efficiency improved effectively.
Description of drawings
By the description of embodiment being carried out below in conjunction with accompanying drawing, these and/or other side of the present disclosure will become obvious and easier to understand, in the accompanying drawings:
Fig. 1 is the sectional view of schematically illustrated rotary compressor according to embodiment of the present disclosure;
Fig. 2 is the zoomed-in view of the compression unit of schematically illustrated rotary compressor according to embodiment of the present disclosure;
Fig. 3 is the zoomed-in view that schematically shows according to the eccentric cam of embodiment's of the present disclosure rotary compressor;
Fig. 4 has schematically shown indication imposes on the load of running shaft under situation about having used according to embodiment's of the present disclosure eccentric cam the view of analog result;
Fig. 5 is the view that has schematically shown indication analog result of the efficient of rotary compressor under according to the situation of embodiment's of the present disclosure eccentric cam;
Fig. 6 is the zoomed-in view that schematically shows according to the eccentric cam of another embodiment's of the present disclosure two-stage rotary compressor.
Embodiment
To be elaborated to embodiment of the present disclosure now, embodiment's example is shown in the drawings, and wherein, identical label is indicated components identical all the time.
Fig. 1 schematically shows the sectional view according to embodiment's of the present disclosure rotary compressor, and Fig. 2 is the zoomed-in view that schematically shows according to the compression unit of embodiment's of the present disclosure rotary compressor.
Shown in Fig. 1 to Fig. 2, rotary compressor 1 comprises casing 10, and casing 10 forms the outward appearance of rotary compressor 1 when forming gas-tight container.Casing 10 is provided with: refrigerant inlet 6 is configured to suck the gas such as air and refrigerant gas; Refrigerant outlet 10b is configured to discharge the gas of compression.
Inside at casing 10 is equipped with: rotating equipment 2 is configured to produce rotating force by stator 2b and rotor 2a; Compression device 20 is configured to utilize by running shaft 21 the rotating force pressurized gas of rotating equipment 2; Eccentric cam 30; Roller 28.
Running shaft 21 has the top that is inserted into rotor 2a inside and passes the bottom of cylinder body 27 longitudinally to arrange, thereby running shaft 21 rotates along with the rotation of rotor 2a.
Therefore, the oily pick-up member 23 at the oil at the lower oil pan 10a place hollow space 21a place by being inserted in running shaft 21 under the effect of the rotary centrifugal force of running shaft 21 rises, and in by oily discharge orifice 22 dischargings lubricated each rotary component.
Here, being applied to the upper flange 25 that is configured to supporting rotating shaft 21 rotatably and the load of lower flange 26 calculates according to following formula.
[mathematical formulae 1]
ΣF=0,→Fcam=Fupperjournal+Flowerjournal
ΣM=0,→Fupperjournal*Lupper=Flowerjournal*Llower
FLowerjournal=(Lupper/(Lupper+Llower))*Fcam
Fupperjournal=(Llower/(Lupper+Llower))*Fcam
At this moment, Fupperjournal represents the pressure of upper flange 25, and Flowerjournal represents the pressure of lower flange 26, and Fcam represents the pressure of eccentric cam 30, and Lupper represents the length of upper flange 25, and Llower represents the length of lower flange 26.
Yet, as shown on Fig. 2, because the length L lower of lower flange 26 is shorter than the length L upper of upper flange 25, so owing to the reaction force of pressure loading causes more load occurring at lower flange 26 places.
Therefore, on as Fig. 3 among the shown embodiment of the present disclosure, eccentric cam 30 with respect to running shaft 21 in roller 28 or the center C of the axis of the part between upper flange 25 and lower flange 26 be arranged on axial eccentric position C ' and locate.
The eccentric position C ' of expectation eccentric cam 30 is arranged on the side near upper flange 25.
Shown in mathematics formula 1, the maximum load that is subjected in running shaft 21 places is owing to eccentric cam 30 reduces with respect to the eccentric position C ' that center C is arranged on a side of close upper flange 25.
Therefore, owing to being configured to support rollers 28(rotation prejudicially in order to be rotated axle 21 compression stroke) the central position of eccentric cam 30 have relative little reaction force in upper flange 25 that the reaction force by compressive load causes and the lower flange 26 to upper flange 25(upper flange 25) side shifting, thereby reduced the maximum load that is subjected at running shaft 21 places.
Fig. 4 schematically shown indication is applied to the load of running shaft under situation about having used according to embodiment's of the present disclosure eccentric cam the view of analog result, and Fig. 5 is the view that has schematically shown indication analog result of the efficient of rotary compressor under having used according to the situation of embodiment's of the present disclosure eccentric cam.
When the central position of the eccentric cam 30 of rotary compressor 1 is raised the eccentric distance G of about 3mm, simulated the load that is applied to upper flange 25 and lower flange 26.
At this moment, running shaft 21 is provided with the length of diameter and the about 134.1mm of about 14.325mm, and eccentric cam 30 is provided with the length of diameter and the about 12.8mm of about 23mm.
Result as Fig. 4 is shown, and under the situation of the eccentric approximately 3mm in the central position that makes eccentric cam 30, the load A of lower flange 26 has been reduced about 11%.
Therefore determine: locate by its axial eccentric position C ' that is arranged on the axis of eccentric cam 30(that uses according to embodiment of the present disclosure) can reduce the total load of running shaft 21.
When Fig. 5 shows type when running shaft 21 under the state of the eccentric approximately 3mm in the central position that makes eccentric cam 30 and becomes the running shaft (b) of the running shaft (a) of the first kind and second type, the analog result with (by-frequency) efficient of change of frequency of rotary compressor 1.
As the traditional running shaft (a) that is made as center C with center with eccentric cam 30 and (b) when comparing, find that the running shaft (a ') of the disclosure (being centered close to towards the eccentric position C ' of the about 3mm of the upper flange 25 1 lateral deviation hearts of eccentric cam 30 located) and the efficient that (b ') demonstrates compressor increase about 1%.
Therefore, under the situation of the eccentric cam 30 that the axial eccentric position C ' that has used on the axis that is arranged on running shaft 21 locates, then determine to improve the efficient of whole rotary compressor 1.
Fig. 6 is the zoomed-in view that has schematically shown according to the eccentric cam of another embodiment's of the present disclosure two-stage rotary compressor.
Though it is not shown, but the axial eccentric position C ' on the axis of running shaft 21 locates to arrange among the first eccentric cam 30a and the second eccentric cam 30b each, the described first eccentric cam 30a and the second eccentric cam 30b are formed on running shaft 21 places of two-stage rotary compressor, thereby can reduce to be applied to the maximum load of running shaft 21.
Can realize axially being arranged on prejudicially the first eccentric cam 30a on the axis of running shaft 21 of two-stage rotary compressor and motion and the effect of the second eccentric cam 30b based on the top description explained, therefore, will omit the repeatability description.
Though shown and described embodiments more of the present disclosure, but skilled person will appreciate that in not breaking away from claim and equivalent thereof under the situation of the principle of the present disclosure of its scope of restriction and spirit, can change in these embodiments.
Claims (7)
1. rotary compressor comprises:
Casing;
Cylinder body is installed in the inside of casing and is configured to be provided for the space of pressurized gas;
Running shaft arranges when passing cylinder body;
Roller is configured to rotate and pressurized gas by the interior perimeter surface along cylinder body;
Eccentric cam forms and is arranged on the inside of roller with running shaft,
Wherein, eccentric cam is arranged on the axial eccentric position place on the axis of running shaft.
2. rotary compressor as claimed in claim 1, wherein:
Described eccentric cam arranges prejudicially along the direction towards axial upside.
3. rotary compressor as claimed in claim 1, wherein:
Described rotary compressor comprises upper flange and the lower flange that the top place that is separately positioned on cylinder body and bottom are located, with supporting rotating shaft rotatably,
Described eccentric cam arranges prejudicially along the direction towards upper flange.
4. eccentric cam assembly comprises:
Running shaft; With
Eccentric cam is installed on the running shaft,
Wherein, eccentric cam running shaft axially on arrange prejudicially.
5. eccentric cam assembly as claimed in claim 4, wherein:
Described eccentric cam arranges prejudicially along the direction towards the upside of running shaft.
6. rotary compressor comprises:
Gas-tight container;
Cylinder body is installed in the inside of gas-tight container;
Upper flange forms pressing chamber when being formed at the top that is attached to cylinder body;
Lower flange forms described pressing chamber when being formed at the bottom that is attached to cylinder body;
Running shaft arranges when passing cylinder body;
Eccentric cam is carried out eccentric rotation when being configured to form with running shaft;
Roller is attached to eccentric cam and is configured to and rotates and pressurized gas by the interior perimeter surface along cylinder body,
Wherein, described eccentric cam is arranged on the eccentric position place towards upper flange on the axis of running shaft.
7. rotary compressor as claimed in claim 6, wherein, described running shaft comprises:
Hollow space, the bottom along the length direction of running shaft from running shaft forms to the top of upper flange;
A plurality of oily discharge orifices are communicated with hollow space along radially forming simultaneously;
The oil pick-up member is configured to be stored in inboard and the upper flange that oil in the lower oil pan of casing of rotary compressor supplies oil to cylinder body by lifting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120004654A KR20130083998A (en) | 2012-01-16 | 2012-01-16 | Rotary compressor |
| KR10-2012-0004654 | 2012-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103206376A true CN103206376A (en) | 2013-07-17 |
Family
ID=47561407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100164774A Pending CN103206376A (en) | 2012-01-16 | 2013-01-16 | Rotary compressor and eccentric cam assembly |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130183181A1 (en) |
| EP (1) | EP2636903A3 (en) |
| KR (1) | KR20130083998A (en) |
| CN (1) | CN103206376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855535A (en) * | 2019-11-27 | 2021-05-28 | 上海海立电器有限公司 | Compressor cylinder reaches compressor including it |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6664118B2 (en) * | 2016-02-26 | 2020-03-13 | パナソニックＩｐマネジメント株式会社 | 2-cylinder hermetic compressor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4288741B2 (en) * | 1999-03-12 | 2009-07-01 | 三菱電機株式会社 | Rotary compressor |
| KR20050011549A (en) * | 2003-07-23 | 2005-01-29 | 삼성전자주식회사 | Capacity-Variable Type Rotary Compressor |
| KR20050011543A (en) * | 2003-07-23 | 2005-01-29 | 삼성전자주식회사 | Capacity-Variable Type Rotary Compressor |
| KR20050028159A (en) * | 2003-09-17 | 2005-03-22 | 삼성전자주식회사 | Variable capacity rotary compressor |
| KR20050031792A (en) * | 2003-09-30 | 2005-04-06 | 삼성전자주식회사 | Variable capacity rotary compressor |
| JP4780971B2 (en) * | 2005-02-17 | 2011-09-28 | 三洋電機株式会社 | Rotary compressor |
| JP4655166B2 (en) * | 2009-08-06 | 2011-03-23 | ダイキン工業株式会社 | Compressor |
-
2012
- 2012-01-16 KR KR1020120004654A patent/KR20130083998A/en not_active Application Discontinuation
-
2013
- 2013-01-10 US US13/738,462 patent/US20130183181A1/en not_active Abandoned
- 2013-01-15 EP EP13151369.9A patent/EP2636903A3/en not_active Withdrawn
- 2013-01-16 CN CN2013100164774A patent/CN103206376A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855535A (en) * | 2019-11-27 | 2021-05-28 | 上海海立电器有限公司 | Compressor cylinder reaches compressor including it |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130183181A1 (en) | 2013-07-18 |
| KR20130083998A (en) | 2013-07-24 |
| EP2636903A2 (en) | 2013-09-11 |
| EP2636903A3 (en) | 2014-03-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130717 |