KR102036200B1 - A compressor having an oil separator - Google Patents

A compressor having an oil separator Download PDF

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Publication number
KR102036200B1
KR102036200B1 KR1020140134496A KR20140134496A KR102036200B1 KR 102036200 B1 KR102036200 B1 KR 102036200B1 KR 1020140134496 A KR1020140134496 A KR 1020140134496A KR 20140134496 A KR20140134496 A KR 20140134496A KR 102036200 B1 KR102036200 B1 KR 102036200B1
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KR
South Korea
Prior art keywords
oil
separation chamber
compressor
rear casing
chamber
Prior art date
Application number
KR1020140134496A
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Korean (ko)
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KR20160040936A (en
Inventor
문치명
김홍민
임재훈
정수철
황인국
Original Assignee
한온시스템 주식회사
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Priority to KR1020140134496A priority Critical patent/KR102036200B1/en
Publication of KR20160040936A publication Critical patent/KR20160040936A/en
Application granted granted Critical
Publication of KR102036200B1 publication Critical patent/KR102036200B1/en

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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
    • 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
    • F04C29/026—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
    • 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
    • F04C18/0207—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 both members having co-operating elements in spiral form
    • F04C18/0215—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 both members having co-operating elements in spiral form where only one member is moving
    • 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
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/30—Casings or housings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The present invention is intended to allow centrifugal separation while the oil-containing gas flows only to the upper portion of the compressor without having to install a separate separation pipe in the rear casing of the compressor. According to the present invention, the rear casing 250 of the compressor 1 is provided. In the compressor installed in the oil separator for separating the oil from the oil-containing gas flowing from the discharge chamber 150, the rear casing 250 discharge port 260 for discharging the gas separated from the oil to the outside of the compressor The oil separator includes: a first lower communication hole 280 through which the oil-containing gas flows from the discharge chamber 150, and an upper discharge port 290 through which the oil-separated gas is discharged upward. An oil separator comprising a separation chamber 270 and a second separation chamber 300 communicating between an upper outlet 290 of the first separation chamber 270 and the discharge port 260. An installed compressor is provided.

Description

A compressor having an oil separator

The present invention relates to a compressor equipped with an oil separator, and more particularly, to a compressor coupled to a refrigeration circuit of an air conditioning system of a vehicle.

Conventionally, the compressor provided with the oil separator of the centrifugal separation system as a compressor couple | bonded with the refrigeration system of a vehicle air conditioner is known (patent document 1 and patent document 2).

1 is a schematic cross-sectional view of an axial cross section of a scroll compressor equipped with a conventional oil separator, and FIG. 2 is a cross-sectional view of the rear casing when the cut line AA of FIG. 1 is viewed in the axial direction B direction. .

The conventional compressor 1 includes a drive casing 10, a compression casing 20, and a rear casing 30, and the drive shaft 40 is rotatably supported by a bearing 50 in the drive casing 10. In the compression casing 20, the scroll unit 80 including the movable scroll 110 and the fixed scroll 120 is accommodated, and between the inner circumferential wall of the compression casing 20 and the scroll unit 80, a suction port. A suction chamber 100 in communication with 90 is formed.

The movable scroll 110 and the fixed scroll 120 are disposed to face each other while being engaged with each other so that the compression chamber 130 is formed therebetween, and the movable scroll 110 connected to the drive shaft 40 is connected to the fixed scroll 120. When rotated, gas is sucked into the compression chamber 130 to compress and discharge the gas.

At the outer side in the axial direction of the compression casing 20, a rear casing 30 having a cylindrical separation chamber 60 and a discharge port 70 formed therein is provided.

A discharge chamber 150 is formed between the end wall 140 of the fixed scroll 120 and the wall portion 180 of the rear casing 30, and the compression chamber (150) is formed through the discharge hole 160 formed in the end wall 140. In communication with 130, the discharge hole 160 is opened and closed by the discharge valve 170.

In FIG. 1, the line XX represents the central axis (corresponding to the point X in FIG. 2) of the rear casing 30, and the discharge port 70 is formed on the side of the discharge port 70 based on the central axis X of the rear casing 30. The upper side ", the opposite side of the discharge port 70 with respect to the center axis X of the rear casing 30 is defined as" lower ".

In the interior of the rear casing 30, a cylindrical separation chamber 60 is formed in a direction substantially perpendicular to the central axis X of the rear casing 30, and the upper portion of the wall portion 180 of the rear casing 30, that is, the rear The discharge chamber 150 communicates with the separation chamber 180 and the discharge port 70 through the communication hole 190 formed in the upper portion of the rear casing 30 based on the central axis X of the casing 30.

The gas sucked into the compressor 1 contains oil as lubricating oil and is supplied to the bearing or sliding surface in the compressor 1 together with the gas to perform lubrication and seal functions. When the amount of oil is excessive, the cooling capacity of the refrigeration circuit is reduced. Since it is a factor, the separation pipe 200 is inserted into the discharge port 70 of the rear casing 30, and the separation pipe 200 is disposed coaxially with the separation chamber 60, so that the separation pipe 200 An annular space is formed between the outer circumferential surface and the inner circumferential surface of the separation chamber 60, and the communication hole 190 is formed so as to direct the space between the outer circumferential surface of the separation pipe 200 and the inner circumferential surface of the separation chamber 60.

Accordingly, when the movable shaft 110 rotates while the drive shaft 10 rotates, the volume of the compression chamber 130 increases and decreases, so that oil-containing gas (refrigerant) is sucked from the suction chamber 100 into the compression chamber 130. It is compressed and discharged into the discharge chamber 150 through the discharge hole 160.

The compressed oil-containing gas flows from the discharge chamber 150 into the separation chamber 60 through the communication hole 190 to spirally annular the space between the outer circumferential surface of the separation tube 200 and the inner circumferential surface of the separation chamber 200. The oil flows downward while turning, and the oil contained in the gas is centrifuged and attached to the inner circumferential surface of the separation chamber 60, and then descends by its own weight and flows into the oil storage chamber 210.

In addition, the gas from which the oil is separated flows into the separation pipe 200 from the lower end of the separation pipe 200 and rises and is discharged to the outside of the compressor 1 through the discharge port 70.

A communication path 220 extending from the oil storage chamber 210 to the movable scroll 110 is formed below the fixed scroll 120, and the communication path 220 is provided with a filter 230 and an orifice 240. have. Therefore, the oil of the oil storage chamber 210 is supplied to the movable scroll 120 side through the orifice 240, and is returned to the suction chamber 100, as shown by the arrow of FIG.

In the separation chamber 60 of the conventional compressor 1 configured as described above, since the separation pipe 200 made of a separate component must be inserted and installed, the assembly process is inconvenient, the number of parts increases, and thus the production cost is increased. There is a rising problem.

In addition, in the conventional compressor 1, the gas introduced into the separation chamber 60 first flows to the lower part of the separation chamber 60 toward the oil storage chamber where the oil is accumulated, and the oil surface in which the oil separated gas is accumulated in the oil storage chamber. After colliding, it is discharged to the top through the lower side of the separation pipe, there is a problem that the oil separation efficiency is lowered.

Patent Document 1: Japanese Patent Application Laid-Open No. 2005-320873 (Nov. 17, 2005) Patent Document 2: Japanese Patent Laid-Open No. 2006-207494 (published Oct. 10,200)

The present invention is to solve the above-mentioned problems, by employing an oil separator formed so that it is not necessary to install a separate separate pipe in the rear casing of the compressor, the compressor assembly is easier, the number of parts is reduced and the manufacturing cost is reduced An object of the present invention is to provide a compressor.

In addition, an object of the present invention is to provide a compressor that improves the oil separation effect by configuring the separation chamber so that the oil-containing gas flows only to the upper portion to be centrifuged.

In order to achieve the above object, according to the present invention, in the rear casing (250) of the compressor (1), in the compressor provided with an oil separator for separating oil from the oil-containing gas flowing from the discharge chamber 150, The rear casing 250 includes a discharge port 260 for discharging the gas separated from the oil to the outside of the compressor, and the oil separator includes a lower communication hole 280 through which the oil-containing gas flows from the discharge chamber 150. ) And a first separation chamber 270 having an upper discharge port 290 through which the gas separated from the oil is discharged upward, an upper discharge port 290 of the first separation chamber 270, and the discharge port 260. Provided is a compressor provided with an oil separator, characterized in that it comprises a second separation chamber (300) communicating therebetween.

The lower communication hole 280 is formed in the lower portion of the rear casing 250 with respect to the central axis X of the rear casing 250.

In addition, when the first separation chamber 270 is viewed in a radial cross section of the rear casing 250, the hole axis extension line 310 of the first separation chamber 270 is connected to the discharge port 260. The first separation chamber 270 is formed to intersect the hole axis extension line 320.

The second separation chamber 300 is formed to extend in an arc shape along the inner wall of the rear casing 250 when viewed in a radial section of the rear casing 250.

According to the present invention described above, since it is not necessary to install a separate separate tube in the rear casing of the compressor, it becomes easy to assemble the compressor, it is possible to reduce the related parts score required to manufacture and combine the separator, As a result, the manufacturing cost can be reduced.

In addition, according to the present invention, since the oil-containing gas flows only upward along the first separation chamber and the second separation chamber, centrifugation is performed, thereby improving oil separation efficiency by centrifugation, and thus discharge from the compressor. It is possible to improve the evaporative cooling performance of the final refrigerant.

1 is an axial sectional view of a compressor equipped with a conventional oil separator.
FIG. 2 is a cross-sectional view of the rear casing as viewed along the line AA in FIG.
3 is a cross-sectional view of the rear casing as seen in the same direction as in FIG. 2 as an embodiment according to the present invention.

FIG. 3 shows an embodiment of a compressor equipped with an oil separator according to the invention, showing a cross-sectional view of the rear casing 250 when viewed in the same direction as shown in FIG. 2.

In FIG. 3, the point X shows the virtual center axis X of the rear casing 30.

In describing the embodiment of the present invention, the configuration of the drive casing 10 and the compression casing 20 except for the internal configuration of the rear casing 250 is the same as the configuration of the conventional compressor 1 shown in FIG. In the present invention, the same reference numerals will be used.

The oil-containing gas flowing into the rear casing 250 from the discharge chamber 150 shown in FIG. 1 is separated by an oil separator formed in the rear casing 250, and then the inside of the rear casing 250 to discharge to the outside of the compressor. The discharge port 260 is formed in the upper portion.

As shown in FIG. 3, the oil separator of the present invention includes a first separation chamber 270 formed in an elongated cylindrical shape and a second separation chamber 300 formed in an arc shape along an inner wall of the rear casing 250.

In addition, the discharge port 260 and the first separation chamber 270 according to the present invention, when the radial cross section of the rear casing 250 along the AA line of FIG. The hole axis extension line 310 of the seal 270 is formed to intersect the hole axis extension line 320 of the discharge port 260.

Therefore, unlike the conventional separation chamber 60 and the discharge port 70 is formed to be directly connected in a coaxial relationship (Fig. 2), the first separation chamber 270 and the discharge port 260 according to the present invention is It is formed in different directions and is not connected directly.

Meanwhile, the first separation chamber 270 is inclined upwardly from the bottom of the rear casing 250 so that the oil-containing gas flowing into the first separation chamber 270 flows upward from the bottom of the rear casing 30. Is formed.

In order to allow the oil-containing gas to flow into the lower side of the first separation chamber 270 from the discharge chamber 150 shown in FIG. 1, the lower communication hole 280 has a central axis X of the rear casing 250. It is formed in the lower portion of the rear casing 250 as a reference. The gas from which the oil is separated from the first separation chamber 270 is discharged to the second separation chamber 300 through the upper discharge port 290 formed above the first separation chamber 270.

The lower communication hole 280 of the first separation chamber 270 is opened toward the circumferential surface of the first separation chamber 270 in a substantially tangential direction so that the oil-containing gas flowing from the discharge chamber 150 is separated firstly. Inflow along the circumferential surface of the chamber 270 flows while gas is turned upward along the circumferential surface of the first separation chamber 270.

The second separation chamber 300 is formed to communicate the upper discharge port 290 of the first separation chamber 270 and the opening under the discharge port 260, and the second separation chamber 300 is line AA of FIG. 1. A radial cross section of the rear casing 250 along the side is formed in a cylindrical channel extending in an arc shape along the inner wall of the rear casing 250.

The first separation chamber 270 is formed by a hole processing method of the rear casing 250. In this process, the opening opened to the outside of the rear casing 250 is closed by the relief valve 330.

On the other hand, the upper discharge port 290 of the first separation chamber is opened so as to be substantially tangential to the circumferential surface of the second separation chamber 300 so that the oil-containing gas discharged from the first separation chamber 270 to the second separation It flows along the circumferential surface of the yarn 300.

According to the configuration of the oil separator according to the present invention, after the oil-containing gas flows into the first separation chamber 270 through the lower communication hole 280 formed in the lower portion of the rear casing 30 from the discharge chamber 150 The oil and gas are centrifuged primarily while turning upward along the circumferential surface of the first separation chamber 270, and then the gas is discharged to the second separation chamber 300 through the upper discharge port 290.

At this time, the gas discharged through the upper discharge port 290 is rotated along the circumferential surface of the second separation chamber 300 and continued along the arc-shaped flow path of the second separation chamber 300 (250). Centrifugation takes place secondarily as it flows upwards.

10: drive casing 20: compression casing
30: rear casing 60: separation chamber
80: scroll unit 100: suction chamber
130: compression chamber 150: discharge chamber
160: discharge hole 190: communication hole
200: separation pipe 210: oil reservoir
250: rear casing 260: discharge port
270: first separation chamber 280: lower communication hole
290: upper outlet 300: second separation chamber
310: hole axis extension line 320: hole axis extension line
X: central axis of the rear casing 30

Claims (8)

In a compressor provided with an oil separator in the rear casing (250) of the compressor (1) for separating oil from oil-containing gas flowing from the discharge chamber (150),
The rear casing 250 includes a discharge port 260 for discharging the gas separated from the oil to the outside of the compressor,
The oil separator may include a first communication chamber 270 including a lower communication hole 280 through which the oil-containing gas flows from the discharge chamber 150 and an upper discharge port 290 through which the oil separated gas is discharged upward. and,
A second separation chamber 300 communicating between an upper discharge port 290 of the first separation chamber 270 and the discharge port 260,
The first separation chamber 270 is formed in a cylindrical shape having a straight section and extends upwardly toward the opposite side of the discharge port 260,
The second separation chamber 300 is formed to extend toward the discharge port 260 in an arc shape along the inner wall of the rear casing 250 when viewed in a radial section of the rear casing 250. The flow of the oil-containing gas flowing from the first separation chamber 270 to the second separation chamber 300 is switched,
When the first separation chamber 270 is viewed in a radial cross section of the rear casing 250, the hole axis extension line 310 of the first separation chamber 270 is the hole axis extension line of the discharge port 260 ( Compressor with an oil separator, characterized in that the intersection with 320). The method according to claim 1,
The lower communication hole 280 is provided with an oil separator, characterized in that formed in the lower portion of the rear casing 250 with respect to the center axis (X) of the rear casing (250). delete delete delete The method according to claim 1,
The lower communication hole (280) is installed in the oil separator characterized in that the oil-containing gas flowing from the discharge chamber 150 is formed along the circumferential surface of the first separation chamber (270). The compressor of claim 6, wherein the second separation chamber (300) is formed in a cylindrical channel. The method according to claim 7,
The upper outlet 290 is an oil separator, characterized in that the oil-containing gas discharged from the first separation chamber 270 is formed to flow along the circumferential surface of the second separation chamber (300).
KR1020140134496A 2014-10-06 2014-10-06 A compressor having an oil separator KR102036200B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140134496A KR102036200B1 (en) 2014-10-06 2014-10-06 A compressor having an oil separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140134496A KR102036200B1 (en) 2014-10-06 2014-10-06 A compressor having an oil separator

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KR20160040936A KR20160040936A (en) 2016-04-15
KR102036200B1 true KR102036200B1 (en) 2019-10-24

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008190459A (en) * 2007-02-06 2008-08-21 Sanden Corp Compressor with built-in oil separator
JP2013060911A (en) 2011-09-14 2013-04-04 Panasonic Corp Electric compressor
JP2013185531A (en) 2012-03-09 2013-09-19 Panasonic Corp Compressor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4436185B2 (en) 2004-05-06 2010-03-24 サンデン株式会社 Compressor
JP2006207494A (en) 2005-01-28 2006-08-10 Sanden Corp Compressor
KR20130011658A (en) * 2011-07-22 2013-01-30 한라공조주식회사 Scroll compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008190459A (en) * 2007-02-06 2008-08-21 Sanden Corp Compressor with built-in oil separator
JP2013060911A (en) 2011-09-14 2013-04-04 Panasonic Corp Electric compressor
JP2013185531A (en) 2012-03-09 2013-09-19 Panasonic Corp Compressor

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