CN108916049B - Pump body structure and compressor - Google Patents
Pump body structure and compressor Download PDFInfo
- Publication number
- CN108916049B CN108916049B CN201810956718.6A CN201810956718A CN108916049B CN 108916049 B CN108916049 B CN 108916049B CN 201810956718 A CN201810956718 A CN 201810956718A CN 108916049 B CN108916049 B CN 108916049B
- Authority
- CN
- China
- Prior art keywords
- roller
- pump body
- body structure
- flange
- compressor
- 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.)
- Active
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a pump body structure and a compressor, wherein the pump body structure comprises: the device comprises a working cavity, a roller and a crankshaft, wherein the roller rolls along the cavity wall in the working cavity, the crankshaft comprises a main shaft and an eccentric part positioned in the roller, and the eccentric part is provided with a friction thrust surface which is contacted with an external mounting piece. The friction thrust surface rotates along with the main shaft to form a circular movement track surface, and the outer circular surface of the roller always surrounds the outer side of the movement track surface in the rolling process. The invention can effectively prevent high-low pressure air leakage and improve the reliability of the pump body.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a pump body structure and a compressor.
Background
As shown in fig. 1 and 2, the cylinder of the conventional high back pressure compressor is at high pressure, the roller 2 is located in the working chamber 1 of the cylinder 5, the eccentric portion 32 of the crankshaft 3 is located in the roller 2, the crankshaft is vertically installed, the lower thrust surface of the eccentric portion 32 is a friction thrust surface 321 in contact with the lower flange, a sliding friction pair is formed between the friction thrust surface 321 and the lower flange, a circular movement track surface 322 is formed in the process that the friction thrust surface 321 follows the rotation of the main shaft 31 of the crankshaft 3, and fig. 3 to 7 are the formation process of the movement track surface 322. As shown in FIG. 8, after long-time running, the thrust surface is in contact friction with the lower flange when moving, so that the lower flange plane can form a circle of circular abrasion surface which is the same as the movement track surface, the abrasion surface is lower by a few um than other plane parts of the lower flange, namely, a high-low step plane is formed, the longer the total running time is, the more obvious the steps are, at the moment, if the distance X between the movement track surface and the outer circle surface of the roller is not reasonably designed, the size X is a negative value or very small, the problem that the high-pressure refrigerant 6 of the pressure cavity and the low-pressure refrigerant 7 of the air suction cavity are seriously mixed can occur, and the influence of power consumption increase and capability reduction is brought.
Therefore, how to design a pump body structure that ensures high and low pressure without air leakage is a technical problem to be solved in the industry.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a pump body structure and a compressor.
The invention adopts the technical scheme that a pump body structure is designed, and the pump body structure comprises: the device comprises a working cavity, a roller and a crankshaft, wherein the roller rolls along the cavity wall in the working cavity, the crankshaft comprises a main shaft and an eccentric part positioned in the roller, and the eccentric part is provided with a friction thrust surface attached to an external mounting piece. The friction thrust surface rotates along with the main shaft to form a circular movement track surface, and the outer circular surface of the roller always surrounds the outer side of the movement track surface in the rolling process.
Preferably, the minimum distance from the outer circular surface of the roller to the movement track surface in the rolling process is X, and the X meets the following range: x is more than or equal to 0.2mm.
Preferably, the minimum distance from the outer circular surface of the roller to the movement track surface in the rolling process is X, and the X meets the following range: x is less than or equal to 5mm.
Preferably, the spindle and the working cavity are coaxially arranged, the distance from the axis of the roller to the axis of the working cavity is e, the outer diameter of the roller is ∅ D1, the radius of the movement track surface is R1, and X meets the following relation: x= (0.5× ∅ D1-e) -R1.
Preferably, the eccentricity of the eccentric portion is equal to e.
Preferably, the friction thrust surface comprises: the first cambered surface is matched with the shape of the inner circular surface of the roller, and the center of the second cambered surface is positioned on the axis of the main shaft.
In a preferred embodiment, the end face of the roller adjacent the outer mount is fitted to the outer mount, which is a flange.
The invention also provides a compressor, which comprises the pump body structure.
Wherein the compressor further comprises: the working cavity is arranged in the cylinder body, the cylinder body is arranged between the first flange and the second flange, the end face, close to the cylinder body, of the second flange is attached to the friction thrust surface of the eccentric part, and the end face, close to the second flange, of the roller is attached to the second flange.
Preferably, the compressor is a high back pressure compressor or a low back pressure compressor.
Compared with the prior art, the invention can effectively ensure that the pump body suction cavity and the high-pressure cavity do not get in touch after the compressor runs for a long time by limiting the outer circular surface of the roller to be always surrounded on the outer side of the motion track surface of the eccentric part in the rotation process, thereby improving the reliability of the pump body.
Drawings
The invention is described in detail below with reference to examples and figures, wherein:
FIG. 1 is a schematic view of an internal structure of a prior art compressor;
FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic view of the friction thrust face rotated 0;
FIG. 4 is a schematic illustration of the friction thrust face rotated 90;
FIG. 5 is a schematic illustration of the friction thrust face rotated 180;
FIG. 6 is a schematic view of the friction thrust face rotated 270;
FIG. 7 is a schematic view of a motion profile formed by rotation of a friction thrust surface;
FIG. 8 is a schematic diagram of a structure in which X is negative in the prior art;
FIG. 9 is a schematic illustration of the attachment of the pump body structure of the present invention;
FIG. 10 is a schematic cross-sectional view of B-B of FIG. 9;
FIG. 11 is a schematic diagram of the structure of X in the present invention with positive values;
FIG. 12 is a schematic view of the structure of the crankshaft;
fig. 13 is a schematic view of the direction C in fig. 12.
Detailed Description
As shown in fig. 9 and 10, the pump body structure provided by the present invention includes: working chamber 1, roller 2 and bent axle 3, roller 2 is located working chamber 1, and the appearance of roller 2 is the ring form, and the outer disc of roller 2 rolls along the chamber wall of working chamber 1, and bent axle 3 includes main shaft 31 and the eccentric part 32 of being connected with main shaft 31, and eccentric part 32 is located roller 2, and at least one terminal surface is friction thrust face 321 in the two terminal surfaces of eccentric part 32, friction thrust face 321 and outside installed part 4 laminating contact, in the preferred embodiment, the terminal surface laminating that is close to outside installed part 4 on the roller 2 is on outside installed part 4, and outside installed part 4 is the flange.
As shown in fig. 10 and 11, in the process of rotating the eccentric portion 32 along the main shaft 31, the friction thrust surface 321 rotates along the axis of the main shaft 31 as a rotation axis to form a circular movement track surface 322, and the movement track surface 322 generates the same circular abrasion surface on the external mounting member 4, which is described in detail in the background art, in order to prevent the high-pressure refrigerant 6 of the cylinder pressure cavity and the low-pressure refrigerant 7 of the suction cavity from being in air, the outer circumferential surface of the roller 2 is required to be always enclosed outside the movement track surface 322 in the rolling process, and the advantage of the arrangement is that even if the plane on the external mounting member 4, which is in contact with the friction thrust surface 321, is ground into a step surface with a height difference, the end surface, which is close to the external mounting member 4, of the roller 2 is in contact with the outer side surface of the step surface, so that the tightness of the cylinder suction cavity and the pressure cavity is maintained, and the reliability of the pump body is improved. In the design, the minimum distance from the outer circumferential surface of the roller 2 to the movement track surface 322 during rolling is set as X, and X must satisfy the following range in order to ensure the sealing performance: x is more than 0, and the tightness can be better ensured when X is designed to be a numerical value of more than or equal to 0.2mm. Preferably, X also satisfies the following ranges: x is less than or equal to 5mm so as to prevent the size design of the eccentric part from being too small and affecting the performance of the compressor.
Further, as shown in fig. 10 to 13, the spindle 31 is disposed coaxially with the working chamber 1, the distance from the axis of the roller 2 to the axis of the working chamber 1 is set to e, the outer circle diameter of the roller 2 is set to ∅ D1, the radius of the movement locus surface 322 is set to R1, the point on the edge of the friction thrust surface 321 farthest from the axis of the spindle 31 is set as a reference point, and the reference point rotates with the spindle 31 to form a circular movement locus line with the largest radius, which is the circumferential line of the movement locus surface 322, and therefore, the radius R1 here is actually the distance from the reference point to the axis of the spindle 31. Wherein X satisfies the following relationship: x= (0.5X ∅ D1-e) -R1, and related parameters of the pump body structure can be designed through the relational expression, so that the pump body structure meets the requirement of tightness. In the prior art, the eccentricity of the eccentric portion 32 is also equal to e, so that e can be replaced by the eccentricity of the eccentric portion 32 in the above relation. In a preferred embodiment, the friction thrust surface 321 comprises: the first arc surface 323 and the second arc surface 324, the first arc surface 323 is matched with the inner circular surface shape of the roller 2, namely, the radius of the first arc surface 323 is matched with the radius of the inner circular surface of the roller 2, and the center of the second arc surface 324 is located on the axis of the main shaft 31.
As shown in fig. 11, the present invention also proposes a compressor, which is a high back pressure compressor or a low back pressure compressor. Specifically, the compressor includes: the cylinder body 5 with the working cavity 1, the first flange, the second flange and the pump body structure. In the preferred embodiment, the crankshaft 3 is vertically mounted, the first flange is an upper flange, the second flange is a lower flange, the cylinder 5 is located between the first flange and the second flange, the upper end surface of the second flange is attached to the friction thrust surface of the eccentric portion 32, and the lower end surface of the roller 2 is attached to the upper end surface of the second flange.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (12)
1. A pump body structure, comprising: a working chamber (1), a roller (2) and a crankshaft (3), wherein the roller (2) rolls along a chamber wall in the working chamber (1), the crankshaft (3) comprises a main shaft (31) and an eccentric part (32) positioned in the roller (2), and the eccentric part (32) is provided with a friction thrust surface (321) jointed with an external mounting piece (4);
the friction thrust surface (321) rotates along with the main shaft (31) to form a circular movement track surface (322), and the outer circular surface of the roller (2) is always enclosed on the outer side of the movement track surface (322) in the rolling process.
2. Pump body structure according to claim 1, characterized in that the minimum distance from the outer circumferential surface of the roller (2) to the movement track surface (322) during rolling is X, X satisfying the following ranges: x is more than or equal to 0.2mm.
3. Pump body structure according to claim 1, characterized in that the minimum distance from the outer circumferential surface of the roller (2) to the movement track surface (322) during rolling is X, X satisfying the following ranges: x is less than or equal to 5mm.
4. A pump body structure according to claim 2 or 3, characterized in that the main shaft (31) is arranged coaxially with the working chamber (1), the distance from the axis of the roller (2) to the axis of the working chamber (1) is e, the outer diameter of the roller (2) isThe radius of the motion track surface (322) is R1, and the X satisfies the following relation: />
5. Pump body structure according to claim 4, characterized in that the eccentricity of the eccentric portion (32) is equal to e.
6. A pump body structure according to any one of claims 1 to 3, wherein the friction thrust surface (321) comprises: the first cambered surface (323) is matched with the shape of the inner circular surface of the roller (2), and the second cambered surface (324) is positioned on the axis of the main shaft (31) at the center of the circle.
7. A pump body structure according to any one of claims 1 to 3, wherein the end face of the roller (2) adjacent to the outer mounting member (4) is attached to the outer mounting member (4).
8. A pump body structure according to any one of claims 1 to 3, wherein the external mounting (4) is a flange.
9. A compressor, comprising: pump body structure according to any one of claims 1 to 8.
10. The compressor as set forth in claim 9, further comprising: the cylinder body (5), the first flange and the second flange of the working cavity (1) are arranged, the cylinder body (5) is arranged between the first flange and the second flange, and the end face, close to the cylinder body (5), on the second flange is attached to the friction thrust surface (321) of the eccentric part (32).
11. A compressor according to claim 10, wherein the end face of the roller (2) adjacent to the second flange is fitted to the second flange.
12. The compressor of claim 9, wherein the compressor is a high back pressure compressor or a low back pressure compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956718.6A CN108916049B (en) | 2018-08-21 | 2018-08-21 | Pump body structure and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956718.6A CN108916049B (en) | 2018-08-21 | 2018-08-21 | Pump body structure and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108916049A CN108916049A (en) | 2018-11-30 |
| CN108916049B true CN108916049B (en) | 2024-01-19 |
Family
ID=64405255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810956718.6A Active CN108916049B (en) | 2018-08-21 | 2018-08-21 | Pump body structure and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916049B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040051035A (en) * | 2002-12-11 | 2004-06-18 | 엘지전자 주식회사 | Structure for preventing friction shift in hermetic type compressor |
| JP2008157146A (en) * | 2006-12-25 | 2008-07-10 | Toshiba Kyaria Kk | Multiple cylinder rotary compressor and refrigeration cycle device |
| CN102338089A (en) * | 2011-08-31 | 2012-02-01 | 珠海格力电器股份有限公司 | Compressor for increasing volumetric efficiency of cylinder |
| CN204003445U (en) * | 2014-04-08 | 2014-12-10 | 珠海凌达压缩机有限公司 | Compressor and roller thereof |
| CN204099201U (en) * | 2014-08-07 | 2015-01-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure and duplex cylinder compressor |
| CN204436801U (en) * | 2015-01-30 | 2015-07-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Crankshaft group and compressor |
| CN208718924U (en) * | 2018-08-21 | 2019-04-09 | 珠海凌达压缩机有限公司 | A kind of pump body structure and compressor |
-
2018
- 2018-08-21 CN CN201810956718.6A patent/CN108916049B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040051035A (en) * | 2002-12-11 | 2004-06-18 | 엘지전자 주식회사 | Structure for preventing friction shift in hermetic type compressor |
| JP2008157146A (en) * | 2006-12-25 | 2008-07-10 | Toshiba Kyaria Kk | Multiple cylinder rotary compressor and refrigeration cycle device |
| CN102338089A (en) * | 2011-08-31 | 2012-02-01 | 珠海格力电器股份有限公司 | Compressor for increasing volumetric efficiency of cylinder |
| CN204003445U (en) * | 2014-04-08 | 2014-12-10 | 珠海凌达压缩机有限公司 | Compressor and roller thereof |
| CN204099201U (en) * | 2014-08-07 | 2015-01-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump body structure and duplex cylinder compressor |
| CN204436801U (en) * | 2015-01-30 | 2015-07-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Crankshaft group and compressor |
| CN208718924U (en) * | 2018-08-21 | 2019-04-09 | 珠海凌达压缩机有限公司 | A kind of pump body structure and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108916049A (en) | 2018-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108916049B (en) | Pump body structure and compressor | |
| KR20140142046A (en) | Scroll compressor | |
| US20200284258A1 (en) | Pump body assembly, compressor and air conditioner | |
| CN208718924U (en) | A kind of pump body structure and compressor | |
| CN109611337B (en) | Rolling rotor type compressor | |
| CN108825500B (en) | Compressor pump body and rotary compressor with same | |
| CN203114626U (en) | Rotary compressor with balance hole on sliding piece groove | |
| CN205190207U (en) | Scroll compressor's stator and rotor | |
| CN210715107U (en) | Pump body subassembly, pump body and compressor | |
| CN201771764U (en) | Compressing mechanism of closed rotary compressor | |
| CN214036117U (en) | Pump body assembly and fluid machine with same | |
| CN113757122A (en) | Baffle assembly, pump body assembly and compressor | |
| CN210715102U (en) | Multiple shell fragment formula slider mechanism of preventing leaking | |
| CN108194356B (en) | Pump body and compressor | |
| CN114320915A (en) | Pump body subassembly, compressor and refrigeration equipment of heating | |
| CN203655635U (en) | Rotary type translation piston compressor | |
| CN206246363U (en) | Rotary compressor | |
| CN109611336B (en) | Rolling rotor type compressor | |
| CN111706508A (en) | Gap-adjustable swing compressor piston | |
| CN207813928U (en) | The compression mechanism and compressor of compressor | |
| CN206708007U (en) | Rotary compressor and its slide plate, vane slot and compression assembly | |
| CN105275808A (en) | Rolling rotor type compressor | |
| WO2020037890A1 (en) | Pump body and compressor having same | |
| CN108591057B (en) | Single-cavity asymmetric sliding vane vacuum pump | |
| CN217761309U (en) | Pump body subassembly, compressor and refrigeration plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |