EP2313654A1 - Refrigeration compressor with internal cooling system - Google Patents
Refrigeration compressor with internal cooling systemInfo
- Publication number
- EP2313654A1 EP2313654A1 EP09775668A EP09775668A EP2313654A1 EP 2313654 A1 EP2313654 A1 EP 2313654A1 EP 09775668 A EP09775668 A EP 09775668A EP 09775668 A EP09775668 A EP 09775668A EP 2313654 A1 EP2313654 A1 EP 2313654A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil
- compressor
- cooling system
- cylinder
- shell
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/023—Hermetic compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
Definitions
- the present invention refers to hermetic refrigeration compressors, with reciprocal movement, which have means for collecting oil which is expelled by the drive shaft by way of the cam, in the upper part of the compressor shell. This accumulated oil is used to cool certain specific parts of the compressor block so as to increase the efficiency thereof. Thereafter, the oil returns to the bottom of the compressor.
- Description of the State of the Art Attempts to improve the performance of refrigeration compressors are increasingly common, the main purpose being to reduce their energy consumption. It is known that a large part of the losses of compressors are due to the overheating of gas in the path from the entry of the compressor up to the entry of the compression cylinder. Another factor that reduces the performance of compressors is the inefficiency of gas compression, due to the high working temperature of the cylinder.
- a refrigeration compressor with an internal cooling system comprising compressor shell, inside of which are disposed a compression cylinder having a cylinder body and a cylinder head, a piston that performs an alternating movement inside the cylinder, an oil accumulation region in the lower part of the compressor shell, piston drive means that drive the alternating movement of the piston inside the cylinder, and means for pumping oil from the oil accumulation region over the piston drive means, and the compressor shell comprises an oil sump located in its internal upper portion, the oil sump having an oil drain directed on the surface of the cylinder.
- the oil sump extends around the entire inner circumference of the shell, and the oil drain from the oil sump is intended for spilling oil over the cylinder body.
- the compressor shell may comprise a cover, and the oil sump is formed in the region of this cover, and can be formed integrally with the cover, or integrally with the compressor shell, or as an additional part which is coupled to a part of the compressor shell.
- the oil sump can be formed by stamping during the production process of a part of the compressor shell.
- the piston drive means comprise a rotary shaft oriented substantially vertically, which has an upper end mounted to a piston drive cam, which expels the oil pumped over the piston drive means.
- the oil sump preferably comprises an oil collection region, in which at least a portion of the oil is collected that is expelled by the piston drive means, and the oil collection region has a geometry that allows the run-off of the oil collected to drain from the oil sump.
- figure 1 - is a cross-sectional view of a refrigeration compressor of the state of the art, without the inner cooling system of the present invention
- figure 2 - is a cross-sectional view of a refrigeration compressor according to a present invention, with the inner cooling system.
- FIG. 1 depicts a compressor of the state of the art merely for comparison purposes with the present invention.
- This compressor of the hermetic refrigeration compressor type with reciprocal movement does not have the internal cooling system of the present invention.
- This compressor is disposed inside the shell 1.
- the compressor comprises a cylinder that has a cylinder body 3 and a cylinder head 2, and a piston that performs an alternating movement inside the cylinder.
- an oil accumulating region 5 is formed in the shape of a well.
- the oil accumulating in this accumulation region originally has the purpose of lubricating the compressor parts, reducing the attrition between them and increasing the durability of the compressor.
- This refrigeration compressor of the state of the art also has piston drive means, which are responsible for driving the alternating movement of the piston inside the cylinder, compressing the compression fluid.
- the drive means normally comprise a rotor and a stator, which drive the rotational movement of a rotary shaft 4.
- This rotary shaft is oriented substantially vertically in relation to the compressor shell, and is disposed in such a way that its lower end 13 is immersed in the oil well, while its opposite upper end is mounted to a cam 7 which drives the piston movement.
- an oil pump pumps the oil upwards that is accumulated in the oil accumulation region 5, towards the drive means, and particularly around the rotary shaft 4, such that a portion of the oil 14 is ultimately slung to the upper part of the shaft, by means of the also rotational cam 7.
- this portion of oil is aimed upwards, towards the upper face of the compressor shell 1 , or on the inner surface of the cover of the compressor 6, and also sidewards, towards the inner walls of the upper region of the compressor shell.
- Another portion of oil expelled over the cam around the area formed between the compressor block and the upper face of the shell falls again and runs over the compressor block as a whole.
- FIG. 2 illustrates a compressor according to the present invention, which is provided with the internal cooling system.
- This compressor has the same parts described for the compressor of the state of the art, namely the shell 1 inside of which the compressor is disposed, the cylinder which has a cylinder body 3 and a cylinder head 2, and a piston 12 that performs an alternating movement inside the cylinder.
- the oil accumulation region 5 is also formed by the lower portion of the compressor shell 1.
- the refrigeration compressor according to the invention also has piston drive means, which drive the alternating movement of the piston inside the cylinder, and which comprise, for example, a motor and a stator which drive a rotary shaft 4 oriented substantially vertically in relation to the compressor shell.
- piston drive means which drive the alternating movement of the piston inside the cylinder, and which comprise, for example, a motor and a stator which drive a rotary shaft 4 oriented substantially vertically in relation to the compressor shell.
- the lower end of the shaft 13 is immersed in the oil well, whereas its opposite upper end is mounted to a cam 7 which drives the piston movement.
- This compressor also has a pumping system which pumps the oil upwards that is accumulated in the oil accumulation region 5, towards the piston drive means, and particularly around the rotary shaft 4, when the compressor is switched on, such that a portion of the oil is expelled upwards, towards the upper face inside the compressor shell 1 , or on the cover of the compressor 6, and also sidewards, over the inner walls of the upper region of the compressor shell, as shown by the arrows illustrated in figure 2. Another portion of oil expelled by the cam around the area formed between the compressor block and the upper face of the shell falls again and runs over the compressor block as a whole.
- the compressor illustrated in figure 2 also comprises an oil sump 8 located in the upper portion inside the compressor shell.
- This oil sump 8 has an oil collection region 11 and an oil drain 9, which is directed to spill oil on the surface of the cylinder.
- the oil accumulated on the sump 8, and having a temperature considerably lower than the temperature of the cylinder is drained so as to run on the surface of the cylinder, preferably on the surface of its body 3, so as to cool it. After this run-off, the oil returns to the oil accumulation region 5 in the lower part of the compressor shell, where again it exchanges heat with the shell 1.
- the oil sump preferably extends around the entire inner circumference of the compressor shell, and can be, for example, a circumferential wing that extends from the inner wall of the compressor shell towards the center, and has an edge 10 extending vertically upwards from its inner end.
- the area formed on the circumferential wing and limited by the edge 10 forms the oil collection region 11. Therefore, the oil 14 that was expelled from the cam 7 on the upper face of the compressor shell 1 , will ⁇ drop or run down over the oil sump 8, accumulating in the oil collection region 11 , and prevented from leaking out of the sump 8 by the vertical edge 10.
- a portion of the oil 14 expelled by the cam around the area formed between the compressor block and the upper face of the shell can also be collected by the oil sump 8.
- the oil drain 9 is built, for example, in the shape of a wing inclined downwards from an end of the oil sump 8, in a position above the compression cylinder, such that the drain 9 is directed to spill oil onto the surface of the cylinder, and preferably onto the surface of the cylinder body.
- the drain can also be built in the form of a hole on the surface of the oil sump 8 or on its edge, or in any other form that is capable of draining the oil accumulated in the oil sump 8 over the surface of the cylinder of the compressor.
- the oil collection region 11 is preferably shaped with geometry such that it allows or facilitates the run-off of the oil collected for draining 9 the oil sump, for example, with a horizontal circumferential wing which can be slightly inclined downwards towards the drain region 9.
- the compressor shell preferably comprises a cover 6 in its upper part.
- the oil sump 8 can be formed directly in the region of this cover 6, being mounted thereon in the form of an additional part, or formed integrally and jointly to the cover 6 in the form of a single part.
- the oil sump 8 can be formed as an additional part mounted directly on the compressor shell 1 in its upper region, or fixed to any other part of this shell, for example being fixed to its inner side walls.
- the oil sump 8 is formed integrally and jointly with the compressor shell.
- this sump can be formed by means of additional steps in the process of stamping of these parts, during the production process thereof.
- the compressor may also comprise an oil- cooling device disposed in the upper oil sump 8.
- This device should be able to cool the oil accumulated in the sump, before this oil falls onto the cylinder, thus boosting the temperature reductions of this cylinder.
- This cooling device can be in the form of a heat exchanger, a heat tube or any other means of cooling oil.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0802447-2A BRPI0802447A2 (en) | 2008-07-15 | 2008-07-15 | refrigeration compressor with internal cooling system |
PCT/BR2009/000204 WO2010006396A1 (en) | 2008-07-15 | 2009-07-15 | Refrigeration compressor with internal cooling system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2313654A1 true EP2313654A1 (en) | 2011-04-27 |
EP2313654B1 EP2313654B1 (en) | 2013-05-08 |
Family
ID=41056789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09775668.8A Not-in-force EP2313654B1 (en) | 2008-07-15 | 2009-07-15 | Refrigeration compressor with internal cooling system |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110154982A1 (en) |
EP (1) | EP2313654B1 (en) |
JP (1) | JP2011528076A (en) |
KR (1) | KR20110031470A (en) |
CN (1) | CN102099580A (en) |
BR (1) | BRPI0802447A2 (en) |
WO (1) | WO2010006396A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012082785A (en) * | 2010-10-14 | 2012-04-26 | Panasonic Corp | Compressor |
DE102012222752A1 (en) | 2012-12-11 | 2014-06-12 | Mahle International Gmbh | bearing arrangement |
WO2014103320A1 (en) * | 2012-12-27 | 2014-07-03 | パナソニック株式会社 | Hermetic compressor and refrigeration device with same |
WO2014197607A1 (en) * | 2013-06-05 | 2014-12-11 | The Regents Of The University Of California | Detection of tick-borne diseases |
CN104564737A (en) * | 2014-01-13 | 2015-04-29 | 陈永刚 | Spinning roller pressurizing refrigeration compressor |
TR201721861A2 (en) * | 2017-12-26 | 2019-07-22 | Arcelik As | ONE COMPRESSOR |
DE102020120772A1 (en) * | 2019-09-17 | 2021-03-18 | Hanon Systems | Compressor module |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2583583A (en) * | 1948-10-20 | 1952-01-29 | John R Mangan | Compressor pump |
US2797857A (en) * | 1953-07-16 | 1957-07-02 | Whirlpool Seeger Corp | Refrigerator compressor |
US3356293A (en) * | 1965-11-19 | 1967-12-05 | Gen Motors Corp | Refrigerating apparatus |
JPS5212303U (en) * | 1975-07-15 | 1977-01-28 | ||
JPS5472711U (en) * | 1977-11-02 | 1979-05-23 | ||
DD145949A1 (en) * | 1979-09-18 | 1981-01-14 | Axel D Lorenz | HERMETIC CHEMICAL COMPOSITIONS |
US4569639A (en) * | 1982-05-03 | 1986-02-11 | Tecumseh Products Company | Oil distribution system for a compressor |
BR9102288A (en) * | 1991-05-28 | 1993-01-05 | Brasileira S A Embraco Empresa | SUCTION DIFFERENT SET FOR HERMETIC COMPRESSOR |
JP2004027969A (en) | 2002-06-26 | 2004-01-29 | Matsushita Refrig Co Ltd | Hermetically sealed compressor |
WO2007060238A1 (en) * | 2005-11-28 | 2007-05-31 | Arcelik Anonim Sirketi | A compressor |
-
2008
- 2008-07-15 BR BRPI0802447-2A patent/BRPI0802447A2/en not_active IP Right Cessation
-
2009
- 2009-07-15 CN CN2009801277748A patent/CN102099580A/en active Pending
- 2009-07-15 US US13/003,985 patent/US20110154982A1/en not_active Abandoned
- 2009-07-15 EP EP09775668.8A patent/EP2313654B1/en not_active Not-in-force
- 2009-07-15 JP JP2011517718A patent/JP2011528076A/en active Pending
- 2009-07-15 WO PCT/BR2009/000204 patent/WO2010006396A1/en active Application Filing
- 2009-07-15 KR KR1020117001283A patent/KR20110031470A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2010006396A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2011528076A (en) | 2011-11-10 |
CN102099580A (en) | 2011-06-15 |
WO2010006396A1 (en) | 2010-01-21 |
US20110154982A1 (en) | 2011-06-30 |
EP2313654B1 (en) | 2013-05-08 |
KR20110031470A (en) | 2011-03-28 |
BRPI0802447A2 (en) | 2010-03-23 |
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