CN110118175B - Scroll compressor with oil cooling function - Google Patents
Scroll compressor with oil cooling function Download PDFInfo
- Publication number
- CN110118175B CN110118175B CN201910494427.4A CN201910494427A CN110118175B CN 110118175 B CN110118175 B CN 110118175B CN 201910494427 A CN201910494427 A CN 201910494427A CN 110118175 B CN110118175 B CN 110118175B
- Authority
- CN
- China
- Prior art keywords
- oil
- compressor
- cooler
- main
- scroll 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.)
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 12
- 239000003921 oil Substances 0.000 claims abstract description 122
- 239000010687 lubricating oil Substances 0.000 claims abstract description 36
- 238000009423 ventilation Methods 0.000 claims abstract description 32
- 239000010725 compressor oil Substances 0.000 claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 description 9
- 238000005461 lubrication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- 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
- F04C29/02—Lubrication; Lubricant separation
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
-
- 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
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention provides a scroll compressor with oil cooling, and relates to the technical field of scroll compressors. The scroll compressor comprises a bearing assembly, a compressor oil sump, an oil pump, a main bearing oil sump and an air inlet, and further comprises a cooler arranged at the air inlet, wherein an internal oil duct and a ventilation groove are arranged in the cooler, the internal oil duct is in fluid communication with the main bearing oil sump and is isolated from the air inlet, a refrigerant sucked through the air inlet flows into the compressor through the ventilation groove, when the compressor operates, lubricating oil from the compressor oil sump is pumped to the bearing assembly through the oil pump, at least part of the lubricating oil flows into the main bearing oil sump, the lubricating oil in the main bearing oil sump is led into the cooler to be cooled, and finally flows back to the compressor oil sump. The cooler is arranged at the air inlet of the compressor, and the oil in the main bearing oil storage tank is led into the cooler, so that the lower-temperature suction refrigerant is utilized to cool the lubricating oil, and the bearing capacity of the lubricating oil is effectively improved.
Description
Technical Field
The invention relates to the technical field of scroll compressors, in particular to an oil-cooled scroll compressor.
Background
With the development of economy and technology, scroll compressors are widely used in various industries. When the compressor runs, lubricating oil circulates in the compressor, oil in the oil pool is conveyed to the bearing, after the bearing is lubricated, the temperature rises, and the lubricating oil returns to the oil pool through the oil return channel. Too high a temperature of the lubricating oil may reduce the carrying capacity of the oil and reduce the cooling capacity of the motor, resulting in a reduced motor load capacity.
For low pressure scroll compressors, the lubrication oil circulation is typically as follows: the lubricating oil is pumped to each lubricating point, after the bearing is lubricated, one part of the lubricating oil is stored in an oil storage tank of the main bearing and is discharged outside the main bearing through an oil drain hole formed in the side part of the main bearing, and the lubricating oil flows downwards through an oil drain groove of the motor stator and flows into an oil tank at the bottom of the compressor.
However, in the above-mentioned manner, the circulation of the lubricating oil in the compressor is not cooled, and the temperature is high under the heavy load condition, so that the lubricating capacity is reduced, and the motor cannot be effectively cooled.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a vortex compressor with oil cooling so as to solve the problem of cooling lubricating oil in the compressor.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The invention provides a scroll compressor with oil cooling, which comprises a bearing assembly, a compressor oil pool, an oil pump, a main bearing oil storage pool and an air inlet, wherein the cooler is arranged at the air inlet, an internal oil duct and a ventilation groove are arranged in the cooler, the internal oil duct is in fluid communication with the main bearing oil storage pool and is isolated from the air inlet, a refrigerant sucked by the scroll compressor through the air inlet flows into the scroll compressor after passing through the ventilation groove, when the scroll compressor operates, lubricating oil from the compressor oil pool is pumped to the bearing assembly through the oil pump, at least one part of the lubricating oil flows into the main bearing oil storage pool, and the lubricating oil in the main bearing oil storage pool is led into the cooler to be cooled and finally flows back into the compressor oil pool.
Optionally, the cooler includes a main body and a fixing plate, an oil inlet, a main groove for forming a ventilation groove, and a channel for forming an internal oil channel are provided on the main body, an auxiliary groove corresponding to the main groove on the main body for forming the ventilation groove is provided on the fixing plate, and after the main body and the fixing plate are assembled, the internal oil channel and the ventilation groove which are not communicated with each other are formed.
Optionally, the main body is made of aluminum.
Optionally, the fixing plate is a stamping.
Alternatively, the fixing plate is welded at the air inlet by resistance welding.
Optionally, the fixing plate completely covers the air inlet.
Optionally, an oil guide pipe is arranged at the side part of the main bearing oil storage tank and used for communicating the main bearing oil storage tank with an internal oil duct of the cooler.
Alternatively, the main grooves for forming the ventilation grooves on the main body include a plurality of first main grooves alternately arranged with the passages of the internal oil passage.
Optionally, the main recess for forming the ventilation groove in the main body further comprises a plurality of second main recesses arranged around the oil inlet.
Optionally, the lubricant oil cooled by the cooler flows back to the compressor sump after flowing through the stator of the motor of the scroll compressor while the scroll compressor is operating.
The beneficial effects of the invention include:
The invention provides a scroll compressor which comprises a bearing assembly, a compressor oil tank, an oil pump, a main bearing oil storage tank and an air inlet, and further comprises a cooler arranged at the air inlet, wherein an internal oil duct and a ventilation groove are arranged in the cooler, the internal oil duct is in fluid communication with the main bearing oil storage tank and isolated from the air inlet, a refrigerant sucked by the scroll compressor through the air inlet flows into the scroll compressor after passing through the ventilation groove, when the scroll compressor operates, lubricating oil from the compressor oil tank is pumped to the bearing assembly through the oil pump, at least one part of the lubricating oil flows into the main bearing oil storage tank, and the lubricating oil in the main bearing oil storage tank is led into the cooler to be cooled and finally flows back into the compressor oil tank. The cooler is arranged at the air inlet of the scroll compressor, and the oil in the main bearing oil storage tank is led into the cooler, so that the lubricant is cooled by using the sucked refrigerant with lower temperature, and the bearing capacity of the lubricant is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates a schematic diagram of a scroll compressor with oil cooling provided by an embodiment of the present invention;
Fig. 2 shows a schematic structural diagram of a main body of a cooler according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a fixing plate of a cooler according to an embodiment of the present invention;
fig. 4 shows a schematic diagram of an installation position of a cooler according to an embodiment of the present invention.
Reference numerals: 1-a bearing assembly; 2-compressor oil sump; 3-a main bearing oil storage tank; 4-air inlet; a 5-cooler; 51-a main body; 52-fixing plates; 511-oil inlet; 512-main groove; 5121-a first primary groove; 5122-a second primary groove; 513-channel; 521-auxiliary grooves; and 6-an oil guide pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 shows a schematic structure of a scroll compressor with oil cooling according to an embodiment of the present invention. As shown in fig. 1, the scroll compressor includes a bearing assembly 1 (it is to be noted that the bearing assembly 1 includes, but is not limited to, the bearing assembly shown in fig. 1), a compressor oil sump 2, an oil pump (not shown), a main bearing oil sump 3, and an intake port 4, the scroll compressor further includes a cooler 5 provided at the intake port 4, an internal oil passage and a ventilation groove are provided in the cooler 5, the internal oil passage is in fluid communication with the main bearing oil sump 3 and isolated from the intake port 4, a refrigerant sucked by the scroll compressor through the intake port 4 flows into the scroll compressor through the ventilation groove, and when the scroll compressor is in operation, a lubricant oil from the compressor oil sump 2 is pumped to the bearing assembly 1 by the oil pump, then at least a part of the lubricant oil flows into the main bearing oil sump 3, the lubricant oil (high-temperature lubricant oil) in the main bearing oil sump 3 is introduced into the cooler 5 to be cooled, and finally flows back into the compressor oil sump 2. The dotted arrows in fig. 1 show the flow path of the lubricating oil when the scroll compressor is in operation, and the solid arrows show the flow path of the suction refrigerant in the vicinity of the intake port 4 when the scroll compressor is in operation.
The cooler is arranged at the air inlet of the scroll compressor, and the oil in the main bearing oil storage tank is led into the cooler, so that the lubricant is cooled by using the sucked refrigerant with lower temperature, and the bearing capacity of the lubricant is effectively improved.
Alternatively, as shown in fig. 2 and 3, the cooler 5 includes a main body 51 and a fixing plate 52, the main body 51 is provided with an oil inlet 511, a main groove 512 for forming a ventilation groove, and a passage 513 for forming an internal oil passage, the fixing plate 52 is provided with an auxiliary groove 521 for forming a ventilation groove corresponding to the main groove 512 on the main body 51, and after the main body 51 and the fixing plate 52 are assembled, the internal oil passage and the ventilation groove are formed so as not to communicate with each other. Optionally, the main body 51 is made of aluminum to enhance the heat exchange effect. The fixing plate 52 is preferably a stamping. The fixing plate 52 may be welded at the air inlet 4 by resistance welding. Preferably, the fixing plate 52 completely covers the air inlet 4, thereby effectively utilizing the sucked refrigerant to cool down the lubricating oil in the internal oil passage.
With continued reference to fig. 1, the side portion of the main bearing oil reservoir 3 is provided with an oil guide pipe 6, and the oil guide pipe 6 is used for communicating the main bearing oil reservoir 3 with an internal oil passage of the cooler 5 (specifically, an oil inlet 511 communicating the main bearing oil reservoir 3 with an upper portion of the cooler 5).
Referring to fig. 2, the main groove 512 for forming a ventilation groove on the main body 51 includes a plurality of first main grooves 5121 alternately arranged with passages 513 of the internal oil passage. The main groove 512 of the main body 51 for forming the ventilation groove further includes a plurality of second main grooves 5122 provided around the oil inlet 511. The internal oil duct and the ventilation groove can be arranged in a plurality according to the size limitation, so that the cooling effect is ensured. The dashed arrow in fig. 2 shows the flow path of the lubricating oil in the cooler 5.
Alternatively, the lubricating oil cooled by the cooler 5 flows back to the compressor oil sump 2 after flowing through the stator of the motor of the scroll compressor when the scroll compressor is operated. The lubricating oil cooled by the cooler 5 flows through the stator of the motor to cool the stator, thereby improving the load capacity of the motor.
The mounting position of the cooler 5 at the intake port 4 is as shown in fig. 4, the body 51 and the fixing plate 52 are fitted (such that the grooves for forming the ventilation grooves are aligned correspondingly) to be fixed inside the intake port 4 such that the refrigerant entering through the intake port 4 enters the inside of the compressor via the ventilation grooves, the oil inlet 511 on the body 51 is aligned with the oil guide pipe 6 such that the high-temperature lubricating oil flowing through the oil guide pipe 6 enters the inside of the cooler 5 via the oil inlet 511, and flows out of the cooler 5 through the passage 513 in the cooler 5. The high-temperature lubricating oil flowing through the passage 513 is cooled by heat exchange with the refrigerant flowing through the ventilation groove.
In summary, a cooler is disposed at an air inlet of the compressor, the cooler forms a relatively closed internal oil duct, lubricating oil in a main bearing oil storage tank is led into the oil duct of the cooler, the cooler is provided with a ventilation groove, refrigerant sucked by the compressor flows into the interior of the compressor after passing through the ventilation groove, high-temperature lubricating oil flowing through the oil duct is cooled by heat exchange with the refrigerant flowing through the ventilation groove, and the cooled lubricating oil flows through a motor stator to cool the motor; lubricating oil from the motor flows into the oil sump of the compressor, is pumped to each lubrication point of the compressor by the oil pump, and part of the lubricating oil flows into the oil sump of the main bearing, so that the lubricating oil is circulated. The lubrication oil temperature of the compressor oil sump is effectively reduced, and in actual use, the lubrication oil temperature can be reduced by 15 degrees at most compared with the prior art under the maximum load working condition, so that the bearing capacity of lubrication oil and the load capacity of a motor are ensured.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, but not limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. The scroll compressor with oil cooling comprises a bearing assembly, a compressor oil sump, an oil pump, a main bearing oil sump and an air inlet, and is characterized by further comprising a cooler arranged at the air inlet, wherein an internal oil passage and a ventilation groove are arranged in the cooler, the internal oil passage is in fluid communication with the main bearing oil sump and is isolated from the air inlet, a refrigerant sucked by the scroll compressor through the air inlet flows into the scroll compressor after passing through the ventilation groove, when the scroll compressor operates, lubricating oil from the compressor oil sump is pumped to the bearing assembly through the oil pump, then at least one part of the lubricating oil flows into the main bearing oil sump, the lubricating oil in the main bearing oil sump is led into the cooler for cooling, and the lubricating oil cooled by the cooler flows back to the compressor oil sump after flowing through a stator of a motor of the scroll compressor;
The cooler comprises a main body and a fixed plate, wherein an oil inlet, a main groove for forming the ventilation groove and a channel for forming the internal oil duct are arranged on the main body, an auxiliary groove which corresponds to the main groove on the main body and is used for forming the ventilation groove is arranged on the fixed plate, and after the main body and the fixed plate are assembled, the internal oil duct and the ventilation groove which are not communicated with each other are formed;
The fixing plate is a stamping part;
The fixing plate is welded at the air inlet through resistance welding.
2. The oil cooled scroll compressor of claim 1, wherein the body is aluminum.
3. The oil cooled scroll compressor of claim 1, wherein the fixed plate completely covers the air intake.
4. The oil cooled scroll compressor of claim 1, wherein an oil conduit is provided at a side of the main bearing oil sump for communicating the main bearing oil sump with an internal oil gallery of the cooler.
5. The oil cooled scroll compressor of claim 1, wherein the main grooves on the main body for forming ventilation grooves include a plurality of first main grooves alternately arranged with passages of the inner oil passage.
6. The oil cooled scroll compressor of claim 5, wherein the main recess in the main body for forming a ventilation groove further comprises a plurality of second main recesses disposed about the oil inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494427.4A CN110118175B (en) | 2019-06-06 | 2019-06-06 | Scroll compressor with oil cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494427.4A CN110118175B (en) | 2019-06-06 | 2019-06-06 | Scroll compressor with oil cooling function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110118175A CN110118175A (en) | 2019-08-13 |
| CN110118175B true CN110118175B (en) | 2024-07-30 |
Family
ID=67523966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910494427.4A Active CN110118175B (en) | 2019-06-06 | 2019-06-06 | Scroll compressor with oil cooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110118175B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332113A (en) * | 2019-07-17 | 2019-10-15 | 珠海格力电器股份有限公司 | Compressor and air conditioning system with self-cooling lubricating oil function |
| US11421922B2 (en) * | 2020-04-22 | 2022-08-23 | Haier Us Appliance Solutions, Inc. | Heat dissipation assembly for a linear compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963866A (en) * | 2015-06-30 | 2015-10-07 | 李铃 | Refrigerating vortex compressor with new structure |
| CN208203646U (en) * | 2018-04-11 | 2018-12-07 | 平湖弘欣热电有限公司 | A kind of bearing cooler of air compressor machine |
| CN210484042U (en) * | 2019-06-06 | 2020-05-08 | 苏州英华特涡旋技术有限公司 | Scroll compressor with oil cooling function |
-
2019
- 2019-06-06 CN CN201910494427.4A patent/CN110118175B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963866A (en) * | 2015-06-30 | 2015-10-07 | 李铃 | Refrigerating vortex compressor with new structure |
| CN208203646U (en) * | 2018-04-11 | 2018-12-07 | 平湖弘欣热电有限公司 | A kind of bearing cooler of air compressor machine |
| CN210484042U (en) * | 2019-06-06 | 2020-05-08 | 苏州英华特涡旋技术有限公司 | Scroll compressor with oil cooling function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110118175A (en) | 2019-08-13 |
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| 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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 215500, No. 68, Southeast Avenue, Southeast Economic Development Zone, Suzhou, Jiangsu, Changshu Applicant after: Suzhou yinghuate Vortex Technology Co.,Ltd. Address before: 215500, No. 68, Southeast Avenue, Southeast Economic Development Zone, Suzhou, Jiangsu, Changshu Applicant before: SUZHOU INVOTECH SCROLL TECHNOLOGIES Co.,Ltd. |
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