WO2007114020A1 - 圧縮機 - Google Patents
圧縮機 Download PDFInfo
- Publication number
- WO2007114020A1 WO2007114020A1 PCT/JP2007/055217 JP2007055217W WO2007114020A1 WO 2007114020 A1 WO2007114020 A1 WO 2007114020A1 JP 2007055217 W JP2007055217 W JP 2007055217W WO 2007114020 A1 WO2007114020 A1 WO 2007114020A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- ejector
- pipe
- oil suction
- compression
- Prior art date
Links
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
- 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
- F04C23/008—Hermetic pumps
-
- 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
- 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
- F04C23/001—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 of similar working principle
-
- 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
-
- 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
- F04C29/023—Lubricant distribution through a hollow driving shaft
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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
- F04C29/028—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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- 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
- F04C2240/80—Other components
- F04C2240/809—Lubricant sump
Definitions
- the present invention relates to a compressor that discharges refrigerant compressed by a compression mechanism into a hermetically sealed container.
- this type of compressor for example, a horizontal multi-stage compression rotary compressor including a first compression element and a second compression element, includes a drive element in a horizontally long cylindrical sealed container,
- the compression mechanism is composed of a first compression element and a second rotation compression element that extend in the horizontal direction of the drive element and is driven by the rotation shaft of the drive element. Then, the low-pressure refrigerant gas is drawn from the suction port of the first compression element to the low-pressure chamber side of the cylinder, compressed by the operation of the roller and vane to become an intermediate pressure, and from the high-pressure chamber side through the discharge port and discharge silencer chamber It is discharged into a closed container.
- the intermediate-pressure refrigerant gas discharged into the sealed container is sucked into the low-pressure chamber side of the cylinder from the suction port of the second compression element, and the second-stage compression is performed by the operation of the roller and vane, resulting in high temperature and high pressure.
- the refrigerant gas was discharged from the high-pressure chamber side to the outside of the compressor through the discharge port and discharge silencer chamber.
- the bottom of the sealed container is an oil reservoir, and oil is sucked from the oil reservoir by an oil pump as an oil supply means configured at one end of the rotating shaft, and formed in the rotating shaft.
- the oil is supplied to the compression mechanism through the oil passage to prevent wear of the compression mechanism and the sliding part of the rotating shaft.
- the inner diameter of the other end of the oil suction pipe is larger than the outer diameter of the other end of the ejector pipe, and there is a gap for oil suction between the two.
- the space is composed. Then, due to the ejector effect using the intermediate pressure refrigerant discharged from the first compression element, the oil in the oil reservoir is sucked into the rotating shaft from the oil suction gap, and the oil passage in the rotating shaft is drawn. It was assumed that oil was supplied to the compression mechanism.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-36740
- the present invention has been made to solve the conventional technical problem, and an object thereof is to provide a compressor that stably supplies oil to a sliding portion.
- the compressor of the present invention includes a driving element and a compression mechanism unit driven by a rotating shaft of the driving element in a sealed container, and discharges the refrigerant compressed by the compression mechanism unit into the sealed container.
- An ejector oil pump is provided for sucking oil from an oil reservoir at the bottom of the sealed container into an oil passage formed in the rotating shaft, and one end of the ejector oil pump is connected to the oil passage. The other end is connected to the discharge side of the compression mechanism, the other end is connected to the oil suction noise.
- the oil suction pipe has an inner diameter at the other end of the oil suction pipe that is larger than the outer diameter of the other end of the ejector pipe. And the other end of the oil suction pipe is provided with a positioning portion for positioning the other end of the ejector pipe.
- the compressor mechanism section is composed of first and second compression elements, and the refrigerant compressed by the first compression element is put in the sealed container.
- one end of the ejector pipe communicates with the discharge side of the first compression element.
- the compressor according to the invention of claim 3 is the compressor according to each of the above inventions, wherein the drive element and the compression mechanism are juxtaposed in a horizontal direction and housed in a sealed container.
- a baffle plate is provided that is divided into a compression mechanism portion side to form a differential pressure, and a part of the refrigerant discharged from the compression mechanism portion or the first compression element is discharged to the jet nozzle and the baffle plate The oil is sucked from an oil sump formed on the compression mechanism portion side of the compressor, and the rest is discharged to the drive element side of the baffle plate.
- the positioning portion has a predetermined range of dimensions for inserting the ejector pipe into the oil suction pipe and the position of the ejector nove in the oil suction pipe. It is characterized in that it is confirmed within.
- the compressor of the invention of claim 5 is formed at a position where the other end of the ejector pipe abuts in the invention of claim 4, and the length for inserting the ejector pipe into the oil suction nozzle is fixed. And a second dowel part that abuts the outer peripheral surface of the ejector pipe and fixes the position of the ejector pipe in the radial direction of the oil suction pipe. .
- the airtight container is provided with a drive element and a compression mechanism portion driven by the rotation shaft of the drive element, and the refrigerant compressed by the compression mechanism portion is placed in the airtight container.
- This ejector is equipped with an ejector oil pump for sucking oil from an oil reservoir at the bottom of the sealed container into an oil passage formed in the rotary shaft.
- the oil pump has one end connected to the oil passage, the other end opened in the oil reservoir, one end communicating with the discharge side of the compression mechanism, and the other end with an oil suction nozzle.
- the other end of the oil suction pipe is made larger than the outer diameter of the other end of the ejector pipe and is used for oil suction between the two.
- a positioning portion for positioning the other end of the ejector pipe is formed at the other end of the oil suction pipe, so that the ejector pipe is placed in the oil suction pipe. It can be reliably inserted into a predetermined position.
- the compressor mechanism section is composed of first and second compression elements, and the refrigerant compressed by the first compression element is sealed in a sealed container. Since the discharged intermediate-pressure refrigerant is further compressed by the second compression element and discharged, one end of the ejector pipe communicates with the discharge side of the first compression element. Stable oil suction and supply can be performed by using refrigerant with little change in gas capacity.
- the positioning portion determines the dimension for inserting the ejector pipe into the oil suction pipe and the position of the ejector pipe in the oil suction pipe within a predetermined range.
- the positioning portion is formed at a position where the other end of the ejector pipe comes into contact with the first dowel to fix the length for inserting the ejector pipe into the oil suction pipe.
- a second dowel part that abuts the outer peripheral surface of the ejector pipe and fixes the position of the oil suction pipe in the radial direction of the oil suction pipe, thereby ensuring a gap for oil suction. It becomes possible to set. Therefore, the positioning unit can set the oil suction amount by the ejector oil pump to a desired optimum amount, and can realize stable oil supply.
- the positioning portion is constituted by the first dowel portion and the second dowel portion, so that stable oil supply can be performed with a simple configuration. .
- the drive element and the compression mechanism are arranged side by side in a horizontal direction and housed in a hermetically sealed container.
- FIG. 1 is a longitudinal sectional side view of a horizontal type internal intermediate pressure type multistage compression type (two stage) rotary compressor 10 having first and second compression elements 32 and 34 as an embodiment of the compressor of the present invention ( 4 corresponds to a cross-sectional view taken along line AA in FIG. 4 to be described later),
- FIG. 2 shows another longitudinal side view of multi-stage compression rotary compressor 10 (corresponding to a cross-sectional view taken along line B-B in FIG. 4), and
- FIG. FIG. 2 is a cross-sectional plan view showing a refrigerant introduction pipe and a refrigerant discharge pipe of the rotary compressor 10.
- or FIG. 3 is shown as a cross section which avoided the rotating shaft 16.
- or FIG. 3 is shown as a cross section which avoided the rotating shaft 16.
- 10 is a horizontally installed internal intermediate pressure type rotary compressor.
- This rotary compressor 10 is provided with a horizontally long cylindrical hermetic container 12 sealed at both ends, and the bottom of the hermetic container 12 is an oil reservoir. 15 and so on.
- the sealed container 12 includes a container body 12A and a substantially bowl-shaped end cap (lid body) 12B that closes an opening at one end of the container body 12A.
- a circular mounting hole 12D is formed, and a terminal 20 for supplying electric power to the electric element 14 is attached to the mounting hole 12D.
- the sealed container 12 houses an electric element 14 as a driving element of the rotary compressor 10 and a rotary compression mechanism part (compression mechanism part) 18 driven by the electric element 14 and the rotating shaft 16. ing.
- the electric element 14 is housed on the end cap 12B side in the hermetic container 12, and the rotary compression mechanism 18 is on the side opposite to the end cap 12B and in the horizontal direction (left and right in FIG. 1) with the electric element 14. They are stored side by side.
- the electric element 14 includes a stator 22 attached in an annular shape along the inner peripheral surface of the hermetic container 12, and a rotor 24 inserted and installed inside the stator 22 with a slight gap.
- the rotor 24 is fixed to a rotating shaft 16 that passes through the center and extends in the axial direction (horizontal direction) of the sealed container 12.
- An oil passage 90 is formed in the rotating shaft 16 in the extending direction (axial direction).
- the oil passage 90 has a large-diameter portion 90A and an electric element on the rotary compression mechanism portion 18 side.
- a small diameter portion 90B is formed on the 14 side.
- the inner diameter ratio is set, for example, such that the inner diameter on the large diameter portion 90A side is 1, and the diameter on the small diameter portion 90B side is set to 0.9 to 0.3.
- the oil passage 90 provided in the rotary shaft 16 sets the inner diameter ratio of the large diameter portion 90A and the small diameter portion 90B to 1: 0.9 to 0.3, and the refrigerant gas flowing into the large diameter portion 90A.
- it is configured so that a large centrifugal force can be stored and oil can be stored.
- one end of an oil suction pipe 82 of an ejector oil pump 80 which will be described later, is connected to one end of the oil passage 90 of the rotating shaft 16 (end on the rotary compression mechanism 18 side).
- the stator 22 includes a laminate 26 in which donut-shaped electromagnetic steel plates are laminated, and a stator coil 28 that is fitted around the teeth of the laminate 26 by a direct winding (concentrated winding) method. .
- the rotor 24 is formed of a laminated body 30 of electromagnetic steel plates, and is formed by inserting a permanent magnet MG into the laminated body 30.
- the rotary compression mechanism 18 includes a first rotary compression element 32 serving as a first compression element in the first stage, and an intermediate compressed by the first rotary compression element 32 and discharged into the hermetic container 12.
- the second rotary compression element 34 as a second compression element in the second stage that compresses the refrigerant having the pressure.
- the first and second rotary compression elements 32 and 34 are respectively connected to the cylinders 38 and 40 disposed on both sides of the intermediate partition plate 36 (left and right in FIG. 1), and the rotary shaft 16 has a phase difference of 180 degrees.
- the rollers 46 and 48 are fitted into the eccentric parts 42 and 44 installed in the cylinder and rotate eccentrically in the cylinders 38 and 40, and the cylinders 38 and 40 are in contact with the rollers 46 and 48, respectively.
- the vanes 50 and 52 partitioned on the high-pressure chamber side, and the opening surface of the cylinder 38 on the side of the electric element 14 and the opening surface on the opposite side of the cylinder 40 on the side of the electric element 14 are closed, respectively. It is comprised from the supporting members 54 and 56 which serve as both. Also, the outer circumference of each of the cylinders 38 and 40 is in contact with or close to the inner surface of the sealed container 12!
- suction passages 58, 60 are formed in the support members 54, 56 to communicate with the low pressure chamber side inside the cylinders 38, 40 through suction ports 160, 161, respectively.
- the suction passage 58 communicates with the inside of the sealed container 12 on the electric element 14 side of the baffle plate 100, which will be described later, via the refrigerant introduction pipe 92, and the second rotary compression element 34 sucks the refrigerant gas in the sealed container 12 It is configured to be.
- Discharge silencer chambers 62 and 64 are formed. These discharge silencing chambers 62 and 64 are not shown respectively, and communicate with the high pressure chamber side of the cylinders 38 and 40 via the discharge port.
- the discharge silencing chamber 64 is formed through the support member 54, the cylinders 40, 38, the intermediate partition plate 36, and the cover 66, and further through the baffle plate 100 that is spaced from the cover 66. Further, the intermediate discharge pipe 121 communicates with the inside of the sealed container 12 on the electric element 14 side of the baffle plate 100. Accordingly, the intermediate pressure refrigerant gas compressed by the first rotary compression element 32 and discharged into the discharge muffler chamber 64 is discharged into the sealed container 12.
- an ejector pipe 88 of an ejector oil pump 80 is connected to the middle portion of the intermediate discharge pipe 121. Therefore, one end of the ejector pipe 88 is communicated with the discharge silencer chamber 64 on the discharge side of the first rotary compression element 32 via the intermediate discharge pipe 121.
- the ejector oil pump 80 is for sucking oil from an oil reservoir 15 at the bottom of the inside of the hermetic container 12 into an oil passage 90 formed in the rotary shaft 16, and one end thereof is connected to the oil passage 90.
- the oil suction pipe 82 connected at the other end and opened in the oil sump 15 and the ejector pipe 88 are also configured.
- the jet turbine 88 passes through the cover 68 from one end connected to the middle portion of the intermediate discharge pipe 121, descends toward the bottom of the sealed container 12, and the other end is an oil suction pipe 82.
- the other end (lower end) is opened in a state of being slightly inserted.
- the outer diameter Sa of the other end opening of the ejector pipe 88 inserted into the opening of the other end (lower end) of the oil suction pipe 82 is determined from the inner diameter Sb of the other end opening of the oil suction pipe 82. Formed with small diameter.
- the other end of the ejector pipe 88 is connected to the other end of the oil suction pipe 82.
- the ejector pipe 88 When inserted into the opening, a predetermined interval for oil suction is formed between the oil suction pipe 82 and the ejector noise 88.
- the ejector pipe 88 according to the present invention is formed by inserting the small-diameter end opening of the ejector pipe 88 into the large-diameter opening of the oil suction pipe 82.
- the refrigerant gas compressed by the first rotary compression element 32 and discharged into the discharge silencer chamber 64 is divided into the intermediate discharge pipe 121 and the ejector pipe 88 and flows into them. (Arrow in Fig. 2).
- the refrigerant that has flowed into the jet nozzle 88 is discharged from the jet pipe 88 into the oil suction pipe 82, and the pressure in the gap between the oil suction pipe 82 and the jet nozzle 88 decreases. Therefore, an ejector effect that sucks in the surrounding oil from the gap occurs.
- the oil sucked by the ejector effect of the ejector oil pump 80 passes through the oil suction pipe 82 together with the refrigerant gas discharged from the ejector pipe 88, and flows into the oil passage 90 of the rotary shaft 16.
- the technology for sucking oil with the ejector oil pump 80 configured by inserting the small-diameter ejector pipe 88 into the large-diameter oil suction pipe 82 is a well-known technology from the past. Omitted.
- a positioning portion 70 for positioning the other end portion of the ejector pipe 88 is formed at the other end portion of the oil suction pipe 82.
- the positioning unit 70 determines the dimension for inserting the ejector pipe 88 into the oil suction pipe 82 within a predetermined range, and determines the position of the ejector pipe 88 within the oil suction pipe 82 within the predetermined range.
- the positioning part 70 is composed of a first dowel part 71 and a second dowel part 72.
- Both dowel portions 71 and 72 are projecting portions that are convex in the inner diameter direction of the oil suction pipe 82 (the axial center direction of the pipe 82).
- the first dowel 71 is an oil suction pipe.
- the upper pipe 82 is formed at a position where the other end of the ejector pipe 88 contacts. As a result, the length L for inserting the ejector pipe 88 into the oil suction pipe 82 is fixed.
- the second da The body portion 72 is formed on the opening side of the other end of the oil suction pipe 82 from the first dowel 71, and when the ejector pipe 88 is inserted into the oil suction pipe 82, the ejector pipe 88 It will contact
- the baffle plate 100 described above is for partitioning the inside of the sealed container 12 into the electric element 14 side and the rotary compressor structure part 18 side, thereby forming a differential pressure in the sealed container 12.
- the baffle plate 100 is a donut-shaped steel plate that is disposed with a small clearance between the inner surface of the sealed container 12. In this case, the intermediate-pressure refrigerant gas compressed by the first compression element 32 and discharged to the electric element 14 side in the sealed container 12 passes through a gap formed between the sealed container 12 and the baffle plate 100. Therefore, the pressure on the electric element 14 side of the baffle plate 100 is high in the sealed container 12 due to the presence of the baffle plate 100 that is related to the force that flows into the rotary compression mechanism portion 18 side. Pressure is configured.
- the oil stored in the oil sump at the bottom of the sealed container 12 moves to the rotary compression mechanism 18 side of the baffle plate 100, and from the electric element 14 side of the baffle plate 100 to the rotary compression mechanism 18 The oil level on the side increases.
- the upper surface of the oil stored in the oil reservoir 15 at the bottom of the sealed container 12 is filled at least a predetermined dimension above the lower end of the oil suction pipe 82.
- the opening at the lower end of the oil suction nozzle 82 and the ejector pipe 88 inserted into the opening can be immersed in the oil without any trouble. Therefore, the rotary compression mechanism 18 by the ejector oil pump 80 The oil is smoothly supplied to the sliding part.
- the sleeves 141, 142, 143, and 144 are welded and fixed to the side surfaces of the sealed container 12 at positions corresponding to the support member 56, the support member 54, and the electric element 14 side of the baffle plate 100, respectively. Then, one end of a refrigerant introduction pipe 94 for introducing the refrigerant into the cylinder 40 is inserted and connected into the sleeve 142 and communicated with the suction passage 60. In the sleeve 141, one end of a refrigerant introduction pipe 92 for flowing refrigerant gas into the cylinder 38 is inserted and connected, and one end of the refrigerant introduction pipe 92 communicates with the suction passage 58 of the cylinder 38.
- the refrigerant introduction pipe 92 passes through the upper side outside the sealed container 12 to reach the sleeve 144, and the other end is inserted and connected into the sleeve 144 to be connected to the electric element 14 side of the baffle plate 100 (the electric element 14 and the bar). It communicates with the upper part of the sealed container 12 (between the baffle plate 100). Further, a coolant discharge pipe 96 is inserted into the sleeve 143, and one end of the refrigerant discharge pipe 96 communicates with the discharge silencer chamber 62. Further, a mounting base 110 is provided at the bottom of the sealed container 12 (FIG. 1).
- the refrigerant (from the suction port 161 to the low pressure chamber side of the cylinder 40 of the first rotary compression element 32 via the refrigerant introduction pipe 94 and the suction passage 60 formed in the support member 56 ( The low pressure is compressed by the operation of the roller 48 and the vane 52 to become an intermediate pressure, and is discharged from the high pressure chamber side of the cylinder 40 to the discharge silencer chamber 64. Then, the refrigerant discharged from the discharge silencer chamber 64 flows into the ejector pipe 88 and the intermediate discharge pipe 121 as described above and flows into the intermediate discharge pipe 121, and the refrigerant flowing into the intermediate discharge pipe 121 flows into the baffle in the sealed container 12. It is discharged to the electric element 14 side of the plate 100, and the inside of the sealed container 12 becomes an intermediate pressure.
- the refrigerant that has flowed into the ejector pipe 88 is also discharged into the oil suction pipe 82 by the internal force of the ejector pipe 88.
- the pressure in the gap between the oil suction pipe 82 and the ejector pipe 88 is lowered, and this causes the ejector effect that the gap force also sucks in the surrounding oil. That is, when refrigerant gas is discharged from the ejector pipe 88 into the oil suction pipe 82, the oil stored in the oil reservoir 15 causes the clearance force between the oil suction pipe 82 and the ejector pipe 88 due to the ejector effect. It is sucked into the oil suction pipe 82 (arrow in Fig. 5). The oil sucked into the oil suction nozzle 82 flows into the refrigerant gas, rises in the oil suction pipe 82, and flows into the oil passage 90 in the rotating shaft 16.
- the refrigerant gas and oil that have flowed into the oil passage 90 rotate in the oil passage 90 along with the rotation of the rotating shaft 16. Due to this rotation, oil having a mass greater than that of the refrigerant gas adheres to the inner wall of the oil passage 90 by a centrifugal force and is separated from the refrigerant gas. At this time, the large diameter portion 90A on the oil suction pipe 82 side of the oil passage 90 and the small diameter small portion on the electric element 14 side. Since 90B is formed, the refrigerant gas into which the oil flows has a large centrifugal force in the large-diameter portion 9OA in the oil passage 90.
- the separated oil is urged toward the inner wall side of the oil passage 90 with a strong pressure by the action of centrifugal force.
- the oil urged toward the inner wall side of the oil passage 90 flows into an oil passage (not shown) provided in the oil passage 90 in the rotating shaft 16 and is supplied to the sliding portion and the like.
- oil can be stably supplied to the rotary compression mechanism portion 18, particularly the sliding portion of the second rotary compression element 34 having a high pressure.
- the oil supplied to each sliding part lubricates the sliding part and then returns to the oil sump 15 at the bottom in the sealed container 12.
- the refrigerant gas from which the oil is separated in the oil passage 90 of the rotating shaft 16 is discharged from the small diameter portion 90B of the oil passage 90 to the electric element 14 side in the sealed container 12. Since the center of the rotating rotating shaft 16 (in the oil passage 90) is substantially only the refrigerant gas, the refrigerant gas is smoothly discharged to the electric element 14 side in the sealed container 12 without any trouble.
- the refrigerant gas discharged from the intermediate discharge pipe 121 to the electric element 14 side of the baffle plate 100 in the sealed container 12 rotates through a gap formed between the sealed container 12 and the baffle plate 100. It flows into the compression mechanism 18 side. At this time, the refrigerant gas passes through the gap formed between the sealed container 12 and the baffle plate 100, so that the presence of the baffle plate 100 causes the closed vessel 12 to have an electric element 14 side of the baffle plate 100. A high differential pressure is formed on the compression mechanism 18 side where the pressure is high.
- the opening at the lower end of the oil suction nozzle 82 and the ejector pipe 88 connected to the opening can be immersed in the oil. Only the oil stored in the oil reservoir 15 that sucks in the refrigerant gas of intermediate pressure inside can be sucked in and smoothly supplied to the sliding portion of the rotary compression mechanism portion 18.
- the intermediate-pressure refrigerant gas in the sealed container 12 flows into the refrigerant introduction pipe 92, passes through the upper side outside the sealed container 12, and passes through the suction port 160 through the suction port 160 through the second rotational compression. It is sucked into the low pressure chamber side of the cylinder 38 of the element 34.
- the intermediate-pressure refrigerant gas sucked into the low-pressure chamber side of the cylinder 38 is compressed at the second stage by the operation of the roller 46 and the vane 50 to become a high-temperature / high-pressure refrigerant gas.
- the high-temperature / high-pressure refrigerant gas is discharged from the refrigerant discharge pipe 96 to the outside of the rotary compressor 10 through the discharge port (not shown) from the high-pressure chamber side, through the discharge silencer chamber 62 formed in the support member 54.
- the rotary compressor 10 described above uses the ejector effect of the refrigerant discharged from the first rotary compression element 32 in the longitudinal side view to transfer oil from the inner bottom of the sealed container 12 to the oil passage 90 of the rotary shaft 16.
- Ejector oil pump 80 for suction is provided.
- the discharge gas amount and the flow velocity are determined by the excluded volume of the second rotary compression element 34, the change in the discharge gas volume of the first rotary compression element 32 is small.
- a stable effect of the ejector oil pump 80 can be obtained, and the suction and supply of oil can be stably performed by the ejector oil pump 80.
- a part of the refrigerant gas discharged from the first compression element 32 is used in the ejector oil pump 80 to suck the oil on the compression mechanism portion 18 side of the baffle plate 100, and the remaining refrigerant gas is removed. Since the discharge is made to the electric element 14 side of the baffle plate 100, the refrigerant discharged to the electric element 14 side can constitute a differential pressure with the compression mechanism portion 18 side. As a result, the oil level on the side of the compression mechanism portion 18 of the baffle plate 100 can be raised, so that suitable oil supply performance can be ensured.
- the ejector pipe 88 can be securely placed at a predetermined position in the oil suction pipe 82. Can be inserted.
- the positioning unit 70 determines the dimensions for inserting the ejector pipe 88 into the oil suction pipe 82 and the position of the ejector pipe 88 in the oil suction pipe 82 within a predetermined range.
- the positioning portion 70 is formed at a position where the other end of the ejector pipe 88 comes into contact with the first dowel portion for fixing the length for inserting the ejector pipe 88 into the oil suction nozzle 82.
- 71 and a second dowel portion 72 that abuts the outer peripheral surface of the ejector pipe 88 and fixes the position of the ejector pipe 88 in the radial direction of the oil suction pipe 82. It becomes possible to set the gap of the.
- the positioning portion 70 by configuring the positioning portion 70 with the first dowel portion 71 and the second dowel portion 72, it is possible to supply oil stably with a simple configuration and to absorb oil.
- the ejector pipe 88 By fixing the ejector pipe 88 at a predetermined position in the upper pipe 82, it is possible to eliminate the inconvenience that the ejector noise 88 moves.
- the rotary compressor 10 of the present invention makes it possible to stably supply oil to the sliding portion using the ejector oil pump 80.
- the positioning portion 70 fixes the length for inserting the ejector pipe 88 into the oil suction pipe 82 at a position where the other end of the ejector pipe 88 abuts. And a second dowel part 72 that contacts the outer peripheral surface of the ejector pipe 88 and fixes the position of the ejector pipe 88 in the radial direction of the oil suction pipe 82.
- the present invention is not limited to this, and in the inventions of claims 1 to 4, the positioning portion is formed at the other end of the oil suction pipe 82 and positions the other end of the ejector pipe 88. Just do it.
- the positioning portion determines the dimension for inserting the ejector pipe 88 into the oil suction pipe 82 and the position of the ejector pipe 88 within the oil suction pipe 82 within a predetermined range. It doesn't matter if it exists.
- the second dowel portion may not be brought into contact with the outer peripheral surface of the ejector pipe 88, and a small clearance may be formed between the two.
- the tape pipe 88 is surely used for oil suction by the second dowel section 76 by the height dimension of the second dowel section 76 (height dimension of the protruding protrusion). Can be secured. That is, the ejector pipe 88 is positioned on the first dowel 75 side opposite to the side where the second dowel 76 is formed in the oil suction pipe 82 by the second dowel 76. It becomes.
- the insertion dimension of the other end of the ejector pipe 88 is fixed by the first dowel 75, and the height of the second dowel 76 is between the ejector pipe 88 and the oil suction pipe 82. It is possible to secure a gap for minute oil suction.
- the present invention is applied to the horizontal type two-stage compression rotary compressor 10.
- the present invention is not limited to this and may be applied to a vertical type compressor.
- the present invention can be applied to a compressor in which the rear part of the compressor is composed of a single-stage compression element or a multi-stage compressor composed of three or more stages of compression elements. Similar effects can be obtained.
- FIG. 1 is a longitudinal front view (corresponding to a cross section taken along line AA in FIG. 4) of a horizontal type internal intermediate pressure type multistage compression rotary compressor according to an embodiment of the present invention.
- FIG. 2 is a longitudinal front view (corresponding to a cross section taken along line BB in FIG. 4) of a horizontal type internal intermediate pressure type multistage compression rotary compressor according to an embodiment of the present invention.
- FIG. 3 is a cross-sectional plan view cut along a refrigerant introduction pipe and a refrigerant discharge pipe of a horizontal type internal intermediate pressure multistage compression rotary compressor according to an embodiment of the present invention.
- FIG. 4 is a diagram showing an ejector oil pump of a rotary compressor of an example.
- FIG. 5 is a partially enlarged view of the ejector oil pump of FIG.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020087023747A KR101326450B1 (ko) | 2006-03-30 | 2007-03-15 | 압축기 |
EP07738667.0A EP2000673A4 (en) | 2006-03-30 | 2007-03-15 | COMPRESSOR |
US12/293,467 US8062011B2 (en) | 2006-03-30 | 2007-03-15 | Compressor having an ejector oil pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-094177 | 2006-03-30 | ||
JP2006094177A JP2007270638A (ja) | 2006-03-30 | 2006-03-30 | 圧縮機 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007114020A1 true WO2007114020A1 (ja) | 2007-10-11 |
Family
ID=38563290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/055217 WO2007114020A1 (ja) | 2006-03-30 | 2007-03-15 | 圧縮機 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8062011B2 (ja) |
EP (1) | EP2000673A4 (ja) |
JP (1) | JP2007270638A (ja) |
KR (1) | KR101326450B1 (ja) |
CN (1) | CN101410622A (ja) |
WO (1) | WO2007114020A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102536812A (zh) * | 2010-12-29 | 2012-07-04 | 珠海格力节能环保制冷技术研究中心有限公司 | 涡旋压缩机 |
CN103557162B (zh) * | 2013-10-22 | 2017-01-25 | 广东美芝制冷设备有限公司 | 旋转式压缩机 |
US11655820B2 (en) * | 2020-02-04 | 2023-05-23 | Aspen Compressor, Llc | Horizontal rotary compressor with enhanced tiltability during operation |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53119255A (en) * | 1977-03-28 | 1978-10-18 | Toshiba Corp | Electromagnetic solid phase bonding method for tubular bodies of different diameter |
JPS5591792A (en) * | 1978-12-28 | 1980-07-11 | Mitsubishi Electric Corp | Horizontal type rotary compressor |
JPS55170483U (ja) * | 1979-05-22 | 1980-12-06 | ||
JPS6069291A (ja) * | 1984-07-30 | 1985-04-19 | Hitachi Ltd | 横置密閉形回転圧縮機の給油構造 |
JPH07269534A (ja) * | 1994-03-29 | 1995-10-17 | Nitto Seiko Co Ltd | 棒状部品の取付金具 |
JP2005036740A (ja) | 2003-07-16 | 2005-02-10 | Sanyo Electric Co Ltd | 横置き型圧縮機 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4355963A (en) * | 1978-12-28 | 1982-10-26 | Mitsubishi Denki Kabushiki Kaisha | Horizontal rotary compressor with oil forced by gas discharge into crankshaft bore |
US4240774A (en) * | 1979-02-15 | 1980-12-23 | General Electric Company | Hermetically sealed compressor suction tube and method of assembly |
US5341566A (en) * | 1993-05-10 | 1994-08-30 | Eaton Corporation | Conduit attachment |
-
2006
- 2006-03-30 JP JP2006094177A patent/JP2007270638A/ja active Pending
-
2007
- 2007-03-15 WO PCT/JP2007/055217 patent/WO2007114020A1/ja active Application Filing
- 2007-03-15 US US12/293,467 patent/US8062011B2/en active Active
- 2007-03-15 KR KR1020087023747A patent/KR101326450B1/ko active IP Right Grant
- 2007-03-15 EP EP07738667.0A patent/EP2000673A4/en not_active Withdrawn
- 2007-03-15 CN CNA2007800113544A patent/CN101410622A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53119255A (en) * | 1977-03-28 | 1978-10-18 | Toshiba Corp | Electromagnetic solid phase bonding method for tubular bodies of different diameter |
JPS5591792A (en) * | 1978-12-28 | 1980-07-11 | Mitsubishi Electric Corp | Horizontal type rotary compressor |
JPS55170483U (ja) * | 1979-05-22 | 1980-12-06 | ||
JPS6069291A (ja) * | 1984-07-30 | 1985-04-19 | Hitachi Ltd | 横置密閉形回転圧縮機の給油構造 |
JPH07269534A (ja) * | 1994-03-29 | 1995-10-17 | Nitto Seiko Co Ltd | 棒状部品の取付金具 |
JP2005036740A (ja) | 2003-07-16 | 2005-02-10 | Sanyo Electric Co Ltd | 横置き型圧縮機 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2000673A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2000673A4 (en) | 2014-11-26 |
US8062011B2 (en) | 2011-11-22 |
KR20080105126A (ko) | 2008-12-03 |
US20090280020A1 (en) | 2009-11-12 |
JP2007270638A (ja) | 2007-10-18 |
CN101410622A (zh) | 2009-04-15 |
EP2000673A1 (en) | 2008-12-10 |
KR101326450B1 (ko) | 2013-11-07 |
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