EP3795828B1 - Verdichter mit verbesserten schmiermitteln - Google Patents

Verdichter mit verbesserten schmiermitteln Download PDF

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Publication number
EP3795828B1
EP3795828B1 EP20193619.2A EP20193619A EP3795828B1 EP 3795828 B1 EP3795828 B1 EP 3795828B1 EP 20193619 A EP20193619 A EP 20193619A EP 3795828 B1 EP3795828 B1 EP 3795828B1
Authority
EP
European Patent Office
Prior art keywords
compressor
lubricant
lubricating device
crank
shaft
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
Application number
EP20193619.2A
Other languages
English (en)
French (fr)
Other versions
EP3795828A1 (de
Inventor
Semih GUREL
Ergin TASDELEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelik AS
Original Assignee
Arcelik AS
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP3795828A1 publication Critical patent/EP3795828A1/de
Application granted granted Critical
Publication of EP3795828B1 publication Critical patent/EP3795828B1/de
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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
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • F04B39/0253—Hermetic compressors with oil distribution channels in the rotating shaft using centrifugal force for transporting the oil
    • 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
    • F04B39/0094—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 crankshaft
    • 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
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • 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
    • F04B39/0261—Hermetic compressors with an auxiliary oil pump

Definitions

  • the present invention relates to a compressor, in particular to a compressor having improved lubrication means.
  • Hermetically sealed reciprocating compressor are commonly used in a wide range of applications such as cooling appliances and air conditioning appliances.
  • the lubrication of moving parts and parts guiding said moving parts such as crankshaft, cylinder block and main bearing is performed by the lubricating oil collected inside the compressor especially in the lower section of the compressor casing.
  • the lubricant is transferred towards the upper portions of the compressor by means of centrifugal forces and the channel provided inside the crankshaft.
  • the lubricant is carried along the channel and towards the crank.
  • the lubricant is then ejected, preferably upwards, by means of an extension pipe or other means.
  • the lubricant is ejected, collides with the upper section of the casing of the compressor after which the lubricant starts to drip on moving parts and parts guiding said moving parts therefore lubricating the said parts.
  • the lubrication in compressors is vital as the moving parts tends to wear out in the absence of proper lubrication which in time leads to decrease in energy efficiency of the compressor.
  • Another problem with compressors is that the compressor requires more lubrication in higher operating speeds meaning that the rpm (revolutions per minute).
  • a problem faced with compressors working at high rpm values is that the lubricant is ejected from the crankshaft or other lubricating means provided on the crankshaft at a high speed.
  • the lubricant collides the upper section of the casing at a high speed therefore increasing the operational noise level of the compressor.
  • Another problem faced with compressors operating at high rpm values is that the lubricant, after hitting the upper section of the casing, scatters inside the casing and reaches the suction muffler. The lubricant enters the suction muffler and mixes with the coolant which in turn decreases the energy efficiency of the compressor.
  • crankshaft for a hermetic compressor wherein the crankshaft comprises means for transferring and distributing lubricant towards the moving parts and parts guiding said moving parts.
  • An objective of the present invention is to provide a lubricating device which provides improved lubrication performance, reducing the noise generated by the compressor and ensuring that no lubricant enters the suction muffler and therefore to the cooling cycle of the appliance wherein the compressor is utilized.
  • the method realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims comprises a compressor suitable to be used in a cooling appliance.
  • the compressor comprises a cylinder block and a main bearing.
  • the main bearing supports a crankshaft.
  • the compressor comprises a casing hermetically sealing the operational parts of the compressor wherein the casing comprises a lower section and an upper section.
  • the lower section and the upper section are connected to each other, hermetically sealing the compressor.
  • the crankshaft comprises a shaft vertically extending wherein the shaft comprises a bearing section.
  • the bearing section is guided inside the main bearing.
  • the shaft further comprises a tip section on a lower surface of the shaft. The tip section is immersed inside in the lubricant collected inside the lower section.
  • the shaft comprises an integral crank on an upper part of the shaft.
  • the crank converts the rotational movement in reciprocating movement.
  • a channel is provided inside the shaft and transmits the lubricant from the tip section towards the crank upon rotation of the shaft.
  • the crank is provided with an outlet by means of which the lubricant that was conveyed is transferred towards the surface of the crank.
  • the compressor further comprises a lubricating device.
  • the lubricating is device is hollow and is placed onto the crank via an inlet pipe.
  • the inlet pipe provides the lubricant to enter inside the lubricating device.
  • a hole is provided on the surface of the lubricating device. By means of the hole, the lubricant that was conveyed inside the lubricating device is transferred to the moving parts of the compressor and the parts guiding the said moving parts. As the rpm of the compressor increases more lubricant will be conveyed via the channel towards the lubricating device.
  • the hole is provided on the lubricating device so as to transfer the lubricant at least partly laterally.
  • the lubrication of the moving parts of the compressor and the parts guiding the said moving parts is achieved meanwhile hindering the lubricant to hit upper section of the casing. This helps decrease the noise level of the compressor.
  • Another advantageous effect provided by means of this invention is that the lubricant is prevented from reaching the suction muffler, minimizing the possibility of the lubricant getting into the coolant cycle which in turn minimizes energy efficiency losses.
  • the lubricating device comprises a lower surface.
  • the lower surface accommodates the inlet pipe.
  • the lubricating device further comprises an upper surface and a side surface interconnecting the upper surface and the lower surface. The hole is located on the side surface.
  • lubricating device is in cylindrical shape and forms a planar and almost continuous surface with the crank.
  • the crank reciprocates and the flush surface the crank forms with the surface of the lubricating device eliminates the possibility of the lubricating device colliding with other parts of the compressor.
  • the lubricating device is at least partially in spherical shape. It is to be understood that the vertical projection of the lubricating device should not be extending beyond the vertical projection of the crank.
  • the lubricating device comprises plurality of holes on side surface at different heights.
  • the compressor starts to operate at higher rpm values, more and more lubricant will be conveyed towards the lubricating device.
  • Higher rpm values require higher lubrication and by means of plurality of holes the moving parts of the compressor and the parts guiding the said moving parts are lubricated in an efficient manner.
  • Another advantage of using plurality of holes is that the lubricant is divided among the holes, decreasing the speed of lubricant as it exits the lubricating device. By this means, the operational noise level of the compressor is decreased.
  • the hole forms an internal wall of the side surface of the lubricating device.
  • the internal wall of the holes is inclined wherein the cross sectional area of the hole narrows towards the exterior of the lubricating device. By means of this, the lubricant reaches farther as the lubricant exits the lubricating device even during lower rpm values.
  • the upper part of the internal wall in inclined, directing the lubricant downwards and onto the moving parts of the compressor.
  • lubrication of the moving parts of the compressor such as crankshaft, main bearing, shaft and crank is lubricated properly thanks to the hole provided on the crank meanwhile eliminating the possibility of the lubricant from reaching the suction muffler.
  • Another advantageous effect provided by the hole being located on the side surface is that the lubricating oil is prevented to hit the upper section of the casing thereby minimizing the noise level of the compressor.
  • the present invention relates to a compressor (1) of a cooling appliance, the compressor (1) comprising a crankshaft (2) and a cylinder block (3) which has a main bearing (4) for supporting the crankshaft (2) and a casing (5) which has a lower section (6) for collecting lubricant, the crankshaft (2) comprising a vertically extending shaft (7) which includes an integral bearing section (8) that is adapted for being guided into the main bearing (4), the shaft (7) comprising an integral lower tip section (9) that is adapted for being directly immersed into the lubricant inside the lower section (6), wherein shaft (7) comprises an integral crank (10) adapted for converting rotational movement in reciprocating movement and an axially upwardly continuous lubricant channel (11) that is formed so as to extend along and within the shaft (7) and adapted for conveying the lubricant from the lower tip section (9) towards the surface of the crank (10) via an outlet that is provided on the crank (10) upon rotation of the shaft (7).
  • the present invention relates to a compressor (1) further comprising a lubricating device (12) that is hollow wherein the lubricating device (12) is placed onto the crank (10) via an inlet pipe (13) and wherein the inlet pipe (13) is inserted inside the outlet and adapted for conveying the lubricant inside the lubricating device (12) and a hole (14) on a surface of the lubricating device (12).
  • the lubricating device is hollow, and the conveyed lubricant enters the hollow inner volume of the lubricating device (12).
  • the crank (10) along with the rotational movement reciprocates, the lubricant is ejected via the hole (14) provided on the lubricating device (12).
  • the rotating and reciprocating parts of the compressor (1) are lubricated efficiently.
  • range of the jet of the lubricant is controlled. As a result of this, lubricant is prevented from colliding with the upper section, minimizing the noise level of the compressor (1).
  • Another advantageous effect provided by means of the lubricating device (12) is that the position of the hole (14) on the lubricating device (12) is adjusted so as to keep the jet of the lubricant away from the suction muffler. By means of this, the lubricant is prevented from getting into the cooling cycle, increasing energy efficiency of the compressor (1).
  • the lubricating device (12) comprises a lower surface (15) an upper surface (16) and a side surface (17) interconnecting the lower surface (15) and the upper surface (16) wherein the hole (14) is on the side surface (17).
  • the hole (14) is on the side surface (17) .
  • the lubricant is ejected from the lubricating device (12) laterally which in turn helps to lubricate the moving parts of the compressor (1). This helps decrease the noise of the compressor (1) resulting from collision of the lubricant and the lower section (7) and/or the upper section.
  • the side surface (17) is cylindrical and forms a planar and almost continuous surface with the crank (10).
  • the lubricating device (12) having a cylindrical shape, the lubricating device (12) is prevented colliding with parts of the compressor (1) during reciprocating movement.
  • the lubricating device (12) is at least partially in spherical shape.
  • the side surface (17) comprises plurality of holes (14) at different heights.
  • lubricant is conveyed towards the lubricating device (12) via the channel (11).
  • the lubricating device (12) is filled with lubricant.
  • Plurality of holes (14) provides multiple orifices for the lubricant to emerge and lubricate the moving parts of the compressor (1).
  • the height difference between the holes (14) provides the lubricant to reach different areas of the compressor (1).
  • plurality of holes (14) has the advantage to dispose of the lubricant faster which will lead to increased noise level at high rpm values.
  • the hole (14) is formed by an internal wall (18) on the side surface (15) wherein the internal wall (18) is inclined, narrowing the hole (14) towards the exterior of the lubricating device (12).
  • the upper part of the internal wall (18) is inclined.
  • the direction of the jet of lubricant is directed downwards, eliminating the possibility of the lubricant reaching the suction muffler.
  • Energy efficiency of the compressor (1) decreases if the lubricant gets into the cooling cycle along with coolant.
  • the lubricating oil is prevented to hit the upper section as it exits the crank (10) therefore minimizing operational noise of the compressor (1).
  • Another advantageous effect of the present invention is that the lubricating oil is prevented to reach suction muffler by means of holes (14) that limit the horizontal distance travelled by the lubricating oil.
  • Another advantageous effect of the present invention is that the holes (14) that are drilled onto the side surface (17) at different height helps to reduce noise level and limit the horizontal distance travelled by the lubricating oil at varying capacities the compressor (1) operates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Claims (7)

  1. Ein Kompressor (1) eine Kühlgerätes, wobei der Kompressor (1) eine Kurbelwelle (2) und einen Zylinderblock (3) umfasst, der ein Hauptlager (4) zum Lagern der Kurbelwelle (2) und ein Gehäuse (5) hat, das einen unteren Abschnitt (6) zum Sammeln von Schmiermittel aufweist, wobei die Kurbelwelle (2) eine sich vertikal erstreckende Welle (7) umfasst, die einen integralen Lagerabschnitt (8) umfasst, der angepasst ist, um in das Hauptlager (4) geführt zu werden, die Welle (7) umfasst einen einstückigen unteren Spitzenabschnitt (9), der geeignet ist, direkt in das Schmiermittel innerhalb des unteren Abschnitts (6) eingetaucht zu werden, wobei die Welle (7) eine einstückige Kurbel (10) aufweist, die zum Umwandeln einer Drehbewegung in eine hin- und hergehende Bewegung geeignet ist, und einen axial nach oben durchgehenden Schmiermittelkanal (11), der so ausgebildet ist, dass er sich entlang und innerhalb der Welle (7) erstreckt und angepasst zum Fördern des Schmiermittels von dem unteren Spitzenabschnitt (9) zu der Oberfläche der Kurbel (10) über einen Auslass ist, der an der Kurbel (10) bei Drehung der Welle (7) vorgesehen ist,
    gekennzeichnet ist er durch
    eine Schmiervorrichtung (12), die hohl ist, wobei die Schmiervorrichtung (12) über ein Einlassrohr (13) auf die Kurbel (10) aufgesetzt ist, wobei das Einlassrohr (13) in den Auslass eingeführt und angepasst ist, um das Schmiermittel innerhalb der Schmiervorrichtung (12) und eines Lochs (14) auf einer Oberfläche der Schmiervorrichtung (12) zu befördern.
  2. Ein Kompressor (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass die Schmiervorrichtung (12) eine untere Fläche (15), eine obere Fläche (16) und eine Seitenfläche (17) umfasst, wobei die untere Fläche (15) und die obere Fläche (16) miteinander verbunden werden, wobei sich das Loch (14) auf der Seitenfläche (17) befindet.
  3. Ein Kompressor (1), wie in Anspruch 2 aufgeführt, ist dadurch gekennzeichnet, dass die Seitenfläche (17) zylindrisch ist und mit der Kurbel (10) eine ebene und nahezu durchgehende Fläche bildet.
  4. Ein Kompressor (1), wie in Anspruch 1 oder 2 aufgeführt, ist dadurch gekennzeichnet, dass die Schmiervorrichtung (12) mindestens teilweise kugelförmig ist.
  5. Ein Kompressor (1), wie in den Ansprüchen 2 bis 4 aufgeführt, ist dadurch gekennzeichnet, dass die Seitenfläche (17) mehrere Löcher (14) in unterschiedlichen Höhen umfasst.
  6. Ein Kompressor (1), wie in den Ansprüchen 2 bis 5 aufgeführt, ist dadurch gekennzeichnet, dass das Loch (14) durch eine Innenwand (18) an der Seitenfläche (17) gebildet ist, wobei die Innenwand (18) geneigt ist und das Loch (14) zum Äußeren der Schmiervorrichtung (12) verengt.
  7. Ein Kompressor (1), wie in Anspruch 6 aufgeführt, ist dadurch gekennzeichnet, dass der obere Teil der Innenwand (18) geneigt ist.
EP20193619.2A 2019-09-20 2020-08-31 Verdichter mit verbesserten schmiermitteln Active EP3795828B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201914323 2019-09-20

Publications (2)

Publication Number Publication Date
EP3795828A1 EP3795828A1 (de) 2021-03-24
EP3795828B1 true EP3795828B1 (de) 2022-05-04

Family

ID=72292366

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Application Number Title Priority Date Filing Date
EP20193619.2A Active EP3795828B1 (de) 2019-09-20 2020-08-31 Verdichter mit verbesserten schmiermitteln

Country Status (2)

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EP (1) EP3795828B1 (de)
PL (1) PL3795828T3 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088579A (en) * 1989-09-26 1992-02-18 Samsung Electronics Co., Ltd. Oil pickup structure of a compressor
WO2016119869A1 (en) 2015-01-30 2016-08-04 Arcelik Anonim Sirketi Crankshaft for a hermetic compressor
WO2016155806A1 (en) * 2015-03-31 2016-10-06 Arcelik Anonim Sirketi Hermetic compressor crankshaft with improved lubrication

Also Published As

Publication number Publication date
EP3795828A1 (de) 2021-03-24
PL3795828T3 (pl) 2022-08-22

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