WO2015033586A1 - ロータリ圧縮機 - Google Patents
ロータリ圧縮機 Download PDFInfo
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- WO2015033586A1 WO2015033586A1 PCT/JP2014/051979 JP2014051979W WO2015033586A1 WO 2015033586 A1 WO2015033586 A1 WO 2015033586A1 JP 2014051979 W JP2014051979 W JP 2014051979W WO 2015033586 A1 WO2015033586 A1 WO 2015033586A1
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- Prior art keywords
- oil supply
- hole
- eccentric
- compression
- shaft
- Prior art date
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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
- 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
- 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
- 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
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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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0085—Prime movers
-
- 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
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
Definitions
- the present invention relates to a rotary compressor used in an air conditioner or a refrigerator.
- an oil supply mechanism that includes an electric element in a sealed container and a rotary compression element that is connected to the electric element via a drive shaft, and supplies lubricating oil that accumulates at the bottom of the sealed container to a sliding portion of the rotary compression element.
- the rotary compression element has two bearings for supporting the drive shaft and a cylinder provided between the bearings, and the drive shaft is fitted in the cylinder.
- a plurality of horizontal holes that are equal to or lower than the discharge pressure and that extend from the through hole toward the outer peripheral surface of the drive shaft are provided, and each of the horizontal holes functions as either an oil supply passage or a gas passage. Head to the outer surface The transverse bore number, shifted 90 ° out of phase with each other, the sealed type rotary compressor compressive stress of the drive shaft is provided on a side effect has been disclosed (e.g., see Patent Document 1).
- the present invention has been made in view of the above, and the strength of the drive shaft (rotating shaft) can be ensured, the oil supply to the sliding portion is not intermittent, and the processing cost does not increase. It aims at obtaining the rotary compressor provided with the drive shaft.
- the present invention provides a sealed vertical compression in which a refrigerant discharge portion is provided in the upper portion and a refrigerant suction portion is provided in the lower portion and lubricating oil is stored.
- a compressor casing disposed at a lower portion of the compressor casing, compressing the refrigerant sucked from the suction section and discharging the refrigerant from the discharge section, and disposed at an upper portion of the compressor casing,
- a motor for driving the compression part via the oil supply mechanism, and an oil supply mechanism for supplying the lubricating oil stored in the lower part of the compressor housing to the sliding part of the compression part through the oil supply vertical hole and the oil supply horizontal hole of the rotary shaft
- the oil supply lateral hole of the oil supply mechanism is provided in the same direction as the eccentric direction of the eccentric part provided in the rotary shaft and revolving the annular piston of the compression part in the cylinder, and from the same direction.
- the direction opposite to the rotation direction of the rotating shaft Characterized in that it is formed between the direction shifted 80 ° phase.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a rotary compressor according to the present invention.
- FIG. 2 is a cross-sectional view seen from above the first and second compression portions of the embodiment.
- FIG. 3 is a side view of the lower portion of the rotating shaft according to the first embodiment.
- FIG. 4 is a longitudinal sectional view of an oil supply pipe according to the first embodiment.
- FIG. 5 is a side view of the pump blade according to the first embodiment.
- FIG. 6A is a cross-sectional view taken along the line AA in FIG.
- FIG. 6B is a cross-sectional view taken along the line BB in FIG.
- FIG. 7 is a view taken from the bottom of FIG.
- FIG. 3 is a diagram illustrating an action state of the refrigerant compression load on the rotation shaft when the rotation angle of the eccentric portion of the rotation shaft is 270 °.
- FIG. 8 is a diagram illustrating the relationship between the rotation angle of the eccentric portion of the rotation shaft and the refrigerant compression load.
- FIG. 9 is a diagram illustrating an action state of the refrigerant compression load on the rotation shaft of the conventional rotary compressor described in Patent Document 1 when the rotation angle of the eccentric portion of the rotation shaft is 270 °.
- FIG. 10 is a side view of the lower part of the rotating shaft according to the second embodiment.
- 11A is a cross-sectional view taken from the bottom along the line DD in FIG.
- FIG. 11B is a cross-sectional view taken along the line EE in FIG.
- FIG. 12 is an F arrow view seen from the bottom of FIG. 10, and is a diagram illustrating an action state of the refrigerant compression load on the rotation shaft when the rotation angle of the eccentric portion of the rotation shaft is 180 °.
- FIG. 13 is an F arrow view seen from the bottom of FIG. 10 and is a diagram illustrating an action state of the refrigerant compression load on the rotation shaft when the rotation angle of the eccentric portion of the rotation shaft is 270 °.
- FIG. 14 is a diagram illustrating the positions of the oil supply lateral holes of the third embodiment.
- FIG. 15 is a diagram illustrating the positions of the oil supply lateral holes of the fourth embodiment.
- FIG. 16 is a diagram illustrating the positions of the oil supply lateral holes of the fifth embodiment.
- FIG. 17 is a diagram illustrating the positions of the oil supply lateral holes of the sixth embodiment.
- FIG. 18 is a diagram illustrating the positions of the oil supply lateral holes of the seventh embodiment.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a rotary compressor according to the present invention
- FIG. 2 is a transverse sectional view seen from above the first and second compression portions of the embodiment.
- the rotary compressor 1 As shown in FIG. 1, the rotary compressor 1 according to the embodiment is disposed at a lower portion of a sealed vertical cylindrical compressor housing 10 and an upper portion of the compressor housing 10. And a motor 11 that drives the compression unit 12 via the rotary shaft 15.
- the stator 111 of the motor 11 is formed in a cylindrical shape, and is fixed by being shrink-fitted on the inner peripheral surface of the compressor housing 10.
- the rotor 112 of the motor 11 is disposed inside the cylindrical stator 111 and is fixed by being shrink-fitted to a rotating shaft 15 that mechanically connects the motor 11 and the compression unit 12.
- the compression unit 12 includes a first compression unit 12S and a second compression unit 12T that is arranged in parallel with the first compression unit 12S and stacked on the upper side of the first compression unit 12S. As shown in FIG. 2, the first and second compression parts 12S and 12T are arranged on the first and second side projecting parts 122S and 122T in a radial manner with the first and second suction holes 135S and 135T, , Annular first and second cylinders 121S and 121T provided with second vane grooves 128S and 128T are provided.
- first and second cylinder inner walls 123S and 123T are formed in the first and second cylinders 121S and 121T concentrically with the rotating shaft 15 of the motor 11.
- first and second annular pistons 125S and 125T having an outer diameter smaller than the cylinder inner diameter are arranged, respectively, and the first and second cylinder inner walls 123S and 123T,
- the first and second working chambers 130S and 130T are formed between the first and second annular pistons 125S and 125T for sucking, compressing and discharging the refrigerant gas.
- First and second vane grooves 128S and 128T are formed in the first and second cylinders 121S and 121T in the radial direction from the first and second cylinder inner walls 123S and 123T over the entire cylinder height.
- Flat plate-like first and second vanes 127S and 127T are slidably fitted into the second vane grooves 128S and 128T, respectively.
- first and second vane grooves 128S and 128T are communicated with the first and second vane grooves 128S and 128T from the outer periphery of the first and second cylinders 121S and 121T at the back of the first and second vane grooves 128S and 128T.
- First and second spring holes 124S and 124T are formed.
- First and second vane springs (not shown) that press the back surfaces of the first and second vanes 127S and 127T are inserted into the first and second spring holes 124S and 124T.
- first and second vane 127S and 127T are moved from the inside of the first and second vane grooves 128S and 128T by the repulsive force of the first and second vane springs.
- the first and second working chambers 130S, 130T are protruded into the working chambers 130S, 130T, their tips abutting against the outer peripheral surfaces of the first and second annular pistons 125S, 125T, and the first and second vanes 127S, 127T.
- 130T is partitioned into first and second suction chambers 131S and 131T and first and second compression chambers 133S and 133T.
- first and second cylinders 121S and 121T communicate with the inner portions of the first and second vane grooves 128S and 128T and the interior of the compressor housing 10 through the opening R shown in FIG.
- First and second pressure introducing passages 129S and 129T are formed in which the compressed refrigerant gas in the housing 10 is introduced and back pressure is applied to the first and second vanes 127S and 127T by the pressure of the refrigerant gas. .
- first and second suction chambers 131S and 131T communicate with the outside in order to suck the refrigerant from the outside into the first and second suction chambers 131S and 131T.
- Second suction holes 135S and 135T are provided.
- an intermediate partition plate 140 is disposed between the first cylinder 121S and the second cylinder 121T, and the first working chamber 130S (see FIG. 2) of the first cylinder 121S and the second cylinder.
- the second working chamber 130T (see FIG. 2) of 121T is partitioned and closed.
- a lower end plate 160S is disposed at the lower end of the first cylinder 121S, and closes the first working chamber 130S of the first cylinder 121S.
- An upper end plate 160T is disposed at the upper end portion of the second cylinder 121T, and closes the second working chamber 130T of the second cylinder 121T.
- a secondary bearing portion 161S is formed on the lower end plate 160S, and the secondary shaft portion 151 of the rotary shaft 15 is rotatably supported by the secondary bearing portion 161S.
- a main bearing portion 161T is formed on the upper end plate 160T, and the main shaft portion 153 of the rotary shaft 15 is rotatably supported by the main bearing portion 161T.
- the rotating shaft 15 includes a first eccentric portion 152S and a second eccentric portion 152T that are eccentric with a phase difference of 180 ° from each other.
- the first eccentric portion 152S is connected to the first annular piston 125S of the first compression portion 12S.
- the second eccentric portion 152T is rotatably fitted to the second annular piston 125T of the second compression portion 12T.
- the first and second annular pistons 125S and 125T move in the first and second cylinders 121S and 121T counterclockwise in FIG. 2 along the first and second cylinder inner walls 123S and 123T. Revolving and following this, the first and second vanes 127S and 127T reciprocate. Due to the movement of the first and second annular pistons 125S and 125T and the first and second vanes 127S and 127T, the volumes of the first and second suction chambers 131S and 131T and the first and second compression chambers 133S and 133T are continuous.
- the compressor 12 continuously sucks, compresses and discharges the refrigerant gas.
- a lower muffler cover 170S is disposed below the lower end plate 160S, and a lower muffler chamber 180S is formed between the lower end plate 160S. And the 1st compression part 12S is opened to lower muffler room 180S. That is, a first discharge hole 190S (see FIG. 2) that connects the first compression chamber 133S of the first cylinder 121S and the lower muffler chamber 180S is provided in the vicinity of the first vane 127S of the lower end plate 160S. A first discharge valve 200S that prevents the backflow of the compressed refrigerant gas is disposed in the hole 190S.
- the lower muffler chamber 180S is one chamber formed in an annular shape, and the lower end plate 160S, the first cylinder 121S, the intermediate partition plate 140, the second cylinder 121T, and the upper end plate 160T are arranged on the discharge side of the first compression unit 12S. This is a part of the communication path that communicates with the upper muffler chamber 180T through the refrigerant path 136 (see FIG. 2) that passes through.
- the lower muffler chamber 180S reduces the pressure pulsation of the discharged refrigerant gas.
- a first discharge valve presser 201S for limiting the amount of deflection opening of the first discharge valve 200S is fixed to the first discharge valve 200S by a rivet together with the first discharge valve 200S.
- the first discharge hole 190S, the first discharge valve 200S, and the first discharge valve presser 201S constitute a first discharge valve portion of the lower end plate 160S.
- an upper muffler cover 170T is disposed above the upper end plate 160T, and an upper muffler chamber 180T is formed between the upper end plate 160T and the upper muffler cover 170T.
- a second discharge hole 190T (see FIG. 2) that communicates the second compression chamber 133T of the second cylinder 121T and the upper muffler chamber 180T is provided, and the second discharge hole 190T. Is provided with a reed valve type second discharge valve 200T for preventing the backflow of the compressed refrigerant gas.
- a second discharge valve presser 201T for limiting the deflection opening amount of the second discharge valve 200T is fixed to the second discharge valve 200T by a rivet together with the second discharge valve 200T.
- the upper muffler chamber 180T reduces the pressure pulsation of the discharged refrigerant.
- the second discharge hole 190T, the second discharge valve 200T, and the second discharge valve presser 201T constitute a second discharge valve portion of the upper end plate 160T.
- the first cylinder 121S, the lower end plate 160S, the lower muffler cover 170S, the second cylinder 121T, the upper end plate 160T, the upper muffler cover 170T, and the intermediate partition plate 140 are integrally fastened by a plurality of through bolts 175 and the like.
- the outer peripheral portion of the upper end plate 160T is fixed to the compressor housing 10 by spot welding, and the compression portion 12 is fixed to the compressor housing 10. .
- the first and second through holes 101 and 102 are passed through the outer peripheral wall of the cylindrical compressor housing 10 in order from the lower part in the axial direction so as to pass the first and second suction pipes 104 and 105. Is provided.
- an accumulator 25 formed of an independent cylindrical sealed container is held by an accumulator holder 252 and an accumulator band 253 on the outer side of the compressor housing 10.
- a system connection tube 255 connected to the evaporator of the refrigeration cycle is connected to the center of the top of the accumulator 25, and one end of the bottom through hole 257 provided at the bottom of the accumulator 25 extends to the upper part inside the accumulator 25.
- the other ends of the first and second suction pipes 104 and 105 are connected to the first and second low-pressure communication pipes 31S and 31T.
- the first and second low-pressure connecting pipes 31S and 31T that guide the low-pressure refrigerant of the refrigeration cycle to the first and second compression parts 12S and 12T through the accumulator 25 are the first and second suction pipes 104,
- the first and second cylinders 121S and 121T are connected to the first and second suction holes 135S and 135T (see FIG. 2) via the 105. That is, the first and second suction holes 135S and 135T are connected in parallel to the evaporator of the refrigeration cycle.
- a discharge pipe 107 is connected to the top of the compressor housing 10 as a discharge unit that is connected to the refrigeration cycle and discharges high-pressure refrigerant gas to the condenser side of the refrigeration cycle. That is, the first and second discharge holes 190S and 190T are connected to the condenser of the refrigeration cycle.
- Lubricating oil is enclosed in the compressor housing 10 up to the height of the second cylinder 121T. Further, the lubricating oil is sucked up from an oil supply pipe 16 attached to the lower end portion of the rotating shaft 15 by a pump blade 157 (see FIG. 5) to be described later and inserted into the lower portion of the rotating shaft 15, and circulates through the compressing portion 12. Then, the sliding part is lubricated and a minute gap in the compression part 12 is sealed.
- FIGS. 3 is a side view of the lower part of the rotating shaft of the first embodiment
- FIG. 4 is a longitudinal sectional view of an oil supply pipe of the first embodiment
- FIG. 5 is a side view of a pump blade of the first embodiment
- 6A is a cross-sectional view taken along line AA in FIG. 3
- FIG. 6B is a cross-sectional view seen from below along line BB in FIG. 7 is a view taken from the bottom of FIG. 3, and is a diagram showing an action state of the refrigerant compression load on the rotation shaft when the rotation angle of the eccentric portion of the rotation shaft is 270 °
- FIG. It is a figure which shows the relationship between the rotation angle of the eccentric part of a rotating shaft, and a refrigerant
- the rotating shaft 15 has a compression portion 12 (see FIG. 5) from the fitting vertical hole 155b, the oil supply vertical holes 155 and 155a, and the oil supply vertical hole 155 in order from the bottom. 1), first and second oil supply lateral holes 156a and 156b for supplying lubricating oil are provided.
- the fitting vertical hole 155 b is formed with an inner diameter larger than the inner diameter of the oil supply vertical hole 155.
- the oil supply pipe 16 is made of a soft material such as copper or aluminum, has a suction port 16a at the lower end, and is open at the upper end.
- the pump blade 157 is made of a steel plate, and includes a blade portion 157a and a base portion 157b formed wider than the blade portion 157a.
- the blade portion 157a has a shape twisted by 180 ° and twisted.
- Width H 1 of the base portion 157b can have a dimensional relationship of the inside diameter [phi] D 1 and interference fit of the oil supply pipe 16 (H 1> ⁇ D 1) , pump vanes 157 are secured to the oil supply pipe 16.
- the blade portion 157 a of the pump blade 157 is inserted into the oil supply vertical hole 155 of the rotary shaft 15, and the upper portion of the oil supply pipe 16 is press-fitted and fitted into the fitting vertical hole 155 b to fix the oil supply pipe 16 to the rotary shaft 15.
- the length of the oil supply pipe 16 is approximately twice the depth of the fitting vertical hole 155b of the rotating shaft 15, and the lower part of the oil supply pipe 16 protrudes below the fitting vertical hole 155b.
- the first oil supply lateral hole 156a of the oil supply mechanism 159A of the first embodiment is formed on the auxiliary shaft portion 151 side of the first eccentric portion 152S of the rotary shaft 15, As viewed from below in the rotational direction of the rotary shaft 15 (downward in FIGS. 6-1 and 7) with respect to the eccentric direction of the first eccentric portion 152S (downward in FIGS. 3 and 6-1, left in FIG. 7). It is formed as a lateral through hole of the rotating shaft 15 in a direction shifted by 40 ° in the opposite direction to the clockwise direction.
- the second oil supply lateral hole 156b of the oil supply mechanism 159A is formed on the main shaft portion 153 side of the second eccentric portion 152T of the rotating shaft 15, and the second eccentric portion.
- the phase is shifted by 40 ° in the direction opposite to the rotational direction of the rotating shaft 15 (clockwise as viewed from below in FIG. 6-2) with respect to the eccentric direction of 152T (upward in FIGS. 3 and 6-2). In the direction, it is formed as a lateral through hole of the rotary shaft 15.
- Conventional oil supply lateral holes were formed in a direction orthogonal to the eccentric directions of the first and second eccentric portions 152S and 152T in view of the ease of fixing the rotary shaft 15 during drilling. Drilling the first and second oil supply lateral holes 156a and 156b according to the first embodiment is performed by fixing the first and second eccentric portions 152S and 152T to the horizontal plane by using a dedicated jig. Good.
- the first and second eccentric portions are in a high compression ratio (high load) condition such as during heating operation of the rotary compressor 1.
- 152S, 152T is the maximum due to the compression reaction force of the refrigerant when rotated approximately 270 ° clockwise from the dead point (when the eccentric direction is directed to the first and second vanes 127S, 127T positions). Take the load.
- the maximum load is applied from the direction shifted by 50 ° clockwise from the eccentric direction of the first eccentric portion 152S (leftward direction in FIG. 7), and the eccentric direction of the first eccentric portion 152S.
- the first oil supply lateral hole 156a formed in a direction shifted by 40 ° counterclockwise from the (leftward direction in FIG. 7) is a neutral axis direction in which no stress is generated with respect to the bending moment acting on the rotary shaft 15. No high tensile / compressive stress is generated around the first oil supply lateral hole 156a having a low strength. Accordingly, the first refueling lateral hole 156a does not cause the rotating shaft 15 to have insufficient strength.
- FIG. 9 is a diagram showing an action state of the refrigerant compression load on the rotation shaft of the conventional rotary compressor described in Patent Document 1 when the rotation angle of the eccentric portion of the rotation shaft is 270 °.
- the first oil supply horizontal hole 956a is located in a direction shifted by 40 ° in the clockwise direction from the neutral axis, and the first oil supply horizontal hole is located.
- the hole 956b is located in a direction in which the phase is shifted by 50 ° counterclockwise from the neutral axis. Therefore, a high compressive stress is generated around the conventional first oil supply lateral holes 956a and 956b.
- the first oil supply lateral hole 156a of the first embodiment is advantageous in terms of stress as compared with the conventional first oil supply lateral holes 956a and 956b, because high tensile / compressive stress is not generated in the periphery.
- first oil supply horizontal holes 156a have openings on the peripheral surface of the rotary shaft 15 spaced apart from each other by 180 °, the oil supply intervals are equal compared to the conventional first oil supply horizontal holes 956a and 956b. .
- first oil supply lateral hole 156a is a lateral through hole, and the machining cost is low because only one drilling process is required.
- the first oil supply horizontal hole 156a of the first embodiment has been described above.
- the second oil supply horizontal hole 156b has the same function and effect as the first oil supply horizontal hole 156a, and thus the description thereof is omitted.
- the oil supply mechanism 159A according to the first embodiment including the oil supply pipe 16, the pump blade 157, the oil supply vertical holes 155 and 155a, the first and second oil supply horizontal holes 156a and 156b, and the like described above is provided at the lower portion of the compressor housing 10.
- the stored lubricating oil is pumped up from the oil supply pipe 16 and lubricates the auxiliary shaft portion 151, the compression portion 12, the main shaft portion 153, and the like.
- FIG. 10 is a side view of the lower part of the rotating shaft of the second embodiment
- FIG. 11-1 is a cross-sectional view seen from the bottom along the line DD in FIG. 10
- FIG. FIG. 12 is a cross-sectional view taken from the bottom along the line EE of FIG. 10
- FIG. 12 is a view taken from the bottom of FIG. 10 and shows the rotation axis when the rotation angle of the eccentric part of the rotation axis is 180 °
- FIG. 13 is an F arrow view seen from the bottom of FIG. 10, and shows a state in which the rotation angle of the eccentric part of the rotation shaft is 270 °. It is a figure which shows the action state of a refrigerant
- the first oil supply lateral hole 156 c of the oil supply mechanism 159 ⁇ / b> B of the second embodiment is formed on the auxiliary shaft portion 151 side of the first eccentric portion 152 ⁇ / b> S of the rotating shaft 15,
- the first eccentric portion 152S is formed as a lateral through hole of the rotary shaft 15 in the same direction as the eccentric direction with respect to the eccentric direction (downward in FIGS. 10, 11-1 and 12).
- the second oil supply lateral hole 156d of the oil supply mechanism 159B is formed on the main shaft portion 153 side of the second eccentric portion 152T of the rotating shaft 15, and the second eccentric portion. It is formed as a lateral through hole of the rotary shaft 15 in the same direction as the eccentric direction with respect to the eccentric direction of 152T (upward in FIGS. 10, 11-2 and 12).
- the first and second eccentric parts 152S and 152T have dead points (the eccentric direction is the first in the cooling rated condition of the rotary compressor 1). (When facing the first and second vanes 127S and 127T positions), when receiving a maximum rotation due to the compression reaction force of the refrigerant, when rotated approximately 180 ° clockwise as viewed from below.
- the maximum load is applied from the direction perpendicular to the eccentric direction of the first eccentric portion 152S (downward direction in FIG. 12) (left direction in FIG. 12), and the eccentricity of the first eccentric portion 152S occurs.
- the first oil supply horizontal hole 156c formed in the same direction as the direction is directed to the neutral axis where no stress is generated with respect to the bending moment acting on the rotary shaft 15, and the first oil supply horizontal hole 156c and its surroundings are weak. There is no tension / compression concentrated stress.
- the first and second eccentric portions 152S and 152T have dead points (the eccentric direction is the first direction).
- the second vanes 127S and 127T are turned to the position of about 270 ° clockwise as viewed from below, the maximum load due to the compression reaction force of the refrigerant is received.
- the maximum load is applied from the direction shifted by 50 ° clockwise from the eccentric direction of the first eccentric portion 152S (leftward direction in FIG. 13), and the eccentric direction of the first eccentric portion 152S.
- the first oil supply lateral hole 156c formed in the same direction is positioned in a direction shifted by 40 ° in the clockwise direction from the neutral axis.
- the first oil supply horizontal hole 956a is located in a direction shifted by 40 ° in the clockwise direction from the neutral shaft, and the first oil supply horizontal hole 956b. Is located in a direction that is 50 ° out of phase from the neutral axis in a counterclockwise direction. Therefore, an equivalent compressive stress is generated in one first oil supply horizontal hole 156c of the second embodiment relative to the conventional first oil supply horizontal hole 956a, but the other first oil supply horizontal hole 156c of the second embodiment is around The tensile stress generated in the above is smaller than the compressive stress generated around the conventional first oil supply lateral hole 956b, which is advantageous in terms of stress.
- the first oil supply horizontal hole 156c has been described above.
- the second oil supply horizontal hole 156d has exactly the same effect as the first oil supply horizontal hole 156c, and thus the description thereof is omitted.
- the oil supply mechanism 159B including the oil supply pipe 16, the pump blade 157, the oil supply vertical holes 155 and 155a and the first and second oil supply horizontal holes 156c and 156d described above,
- the stored lubricating oil is pumped up from the oil supply pipe 16 and lubricates the auxiliary shaft portion 151, the compression portion 12, the main shaft portion 153, and the like.
- FIG. 14 is a view showing the positions of the oil supply lateral holes of the third embodiment.
- the first oil supply lateral hole 156e of the third embodiment is formed on the side of the sub-shaft portion 151 of the first eccentric portion 152S of the rotating shaft 15, and the eccentric direction of the first eccentric portion 152S (in FIG. 14) In the direction shifted by 20 ° in the direction opposite to the rotation direction of the rotary shaft 15 (clockwise as viewed from below in FIG. 14) with respect to the left) (direction shifted by 20 ° from the neutral axis) , Formed as a horizontal through hole of the rotary shaft 15.
- Example 3 the first oil supply of Example 3 is compared with the conventional rotary compressor described in Patent Document 1 shown in FIG. 9 in which the first oil supply lateral holes 956a and 956b are out of phase by 40 ° or more from the neutral shaft.
- the lateral hole 156e is close to the neutral axis, and the tensile / compressive stress generated in the periphery is reduced, which is advantageous in terms of stress.
- FIG. 15 is a diagram showing the positions of the oil supply lateral holes of the fourth embodiment.
- the first oil supply horizontal hole 156g of the fourth embodiment is formed on the side of the sub-shaft portion 151 of the first eccentric portion 152S of the rotating shaft 15, and the eccentric direction of the first eccentric portion 152S (in FIG. 15) In the direction (60 ° phase shifted from the neutral axis) in the direction opposite to the rotation direction of the rotary shaft 15 (clockwise as viewed from below in FIG. 15) with respect to the left) , Formed as a horizontal through hole of the rotary shaft 15.
- the first oil supply of Example 4 is compared with the conventional rotary compressor described in Patent Document 1 in which the first oil supply lateral holes 956a and 956b are shifted in phase by 40 ° or more from the neutral shaft shown in FIG.
- the lateral hole 156g is close to the neutral axis, and the tensile / compressive stress generated in the periphery is reduced, which is advantageous in terms of stress.
- FIG. 16 is a diagram showing the positions of the oil supply lateral holes of the fifth embodiment.
- the first oil supply lateral hole 156i of the fifth embodiment is formed on the side of the sub-shaft portion 151 of the first eccentric portion 152S of the rotating shaft 15, and the eccentric direction of the first eccentric portion 152S (in FIG. In the direction shifted by 70 ° in the direction opposite to the rotation direction of the rotary shaft 15 (clockwise as viewed from below in FIG. 16) with respect to the left) (the direction shifted by 30 ° from the neutral axis). , Formed as a horizontal through hole of the rotary shaft 15.
- the first oil supply of Example 4 is compared with the conventional rotary compressor described in Patent Document 1 in which the first oil supply lateral holes 956a and 956b are shifted in phase by 40 ° or more from the neutral shaft shown in FIG.
- the lateral hole 156g is close to the neutral axis, and the tensile / compressive stress generated in the periphery is reduced, which is advantageous in terms of stress.
- FIG. 17 is a view showing the positions of the oil supply lateral holes of the sixth embodiment.
- the first oil supply lateral hole 156k of the sixth embodiment is formed on the side of the sub-shaft portion 151 of the first eccentric portion 152S of the rotating shaft 15, and the eccentric direction of the first eccentric portion 152S (in FIG. 17) In the direction shifted by 80 ° in the direction opposite to the rotation direction of the rotary shaft 15 (clockwise as viewed from the bottom in FIG. 17) with respect to the left) (direction shifted by 40 ° from the neutral axis). , Formed as a horizontal through hole of the rotary shaft 15.
- the first oil supply horizontal hole 956a is located in a direction that is shifted by 40 ° in the clockwise direction from the neutral shaft, and the first oil supply horizontal hole 956b. Is located in a direction that is 50 ° out of phase from the neutral axis in a counterclockwise direction. Therefore, an equivalent compressive stress is generated around one first oil supply horizontal hole 156k of the sixth embodiment relative to the conventional first oil supply horizontal hole 956a, but the other first oil supply horizontal hole 156k of the sixth embodiment.
- the tensile stress generated in the periphery is smaller than the compressive stress generated in the vicinity of the conventional first oil supply lateral hole 956b, which is advantageous in terms of stress.
- FIG. 18 is a diagram showing the positions of the oil supply lateral holes of the seventh embodiment.
- the first oil supply lateral hole 156m of the seventh embodiment is formed on the side of the sub-shaft portion 151 of the first eccentric portion 152S of the rotating shaft 15, and the eccentric direction of the first eccentric portion 152S (in FIG. 18)
- the rotation axis in the direction shifted by 10 ° in the rotation direction of the rotation shaft 15 (clockwise as viewed from below in FIG. 18) (the direction shifted by 50 ° phase from the neutral axis) with respect to the left) It is formed as 15 lateral through holes.
- the first oil supply horizontal hole 956a is located in a direction that is shifted by 40 ° in the clockwise direction from the neutral shaft, and the first oil supply horizontal hole 956b. Is located in a direction that is 50 ° out of phase from the neutral axis in a counterclockwise direction. Therefore, an equivalent compressive stress is generated around the other first oil supply horizontal hole 156m of the seventh embodiment relative to the conventional first oil supply horizontal hole 956b, but one first oil supply horizontal hole 156m of the seventh embodiment.
- the tensile stress generated in the periphery is larger than the compressive stress generated in the periphery of the conventional first oil supply lateral hole 956a, which is disadvantageous in terms of stress.
- the rotation angle at which the maximum load due to the compression reaction force of the refrigerant is applied to the first and second eccentric portions 152S and 152T of the rotary shaft 15 varies depending on the operating range set in the rotary compressor 1, but is approximately 180 ° to 270 °. Between. Therefore, as described in the first to sixth embodiments, the direction in which the oil supply lateral hole is formed is the same direction as the eccentric direction of the first and second eccentric portions 152S and 152T, and the rotational direction of the rotary shaft 15 from the same direction. And a direction shifted by 80 ° in the opposite direction.
- the first and second oil supply horizontal holes 156a, 156b, 156c, 156d, 156e, 156g, 156i, and 156k are horizontal through holes of the rotary shaft 15.
- a through hole is not required, it is good also as an oil supply horizontal hole of the one side connected to the oil supply vertical hole 155 only.
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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
10 圧縮機筐体
11 モータ
12 圧縮部
15 回転軸
16 給油パイプ
16a 吸込口
25 アキュムレータ
31S 第1低圧連絡管
31T 第2低圧連絡管
101 第1貫通孔
102 第2貫通孔
104 第1吸入管
105 第2吸入管
107 吐出管(吐出部)
111 ステータ
112 ロータ
12S 第1の圧縮部
12T 第2の圧縮部
121S 第1シリンダ(シリンダ)
121T 第2シリンダ(シリンダ)
122S 第1側方張出部
122T 第2側方張出部
123S 第1シリンダ内壁(シリンダ内壁)
123T 第2シリンダ内壁(シリンダ内壁)
124S 第1スプリング穴
124T 第2スプリング穴
125S 第1環状ピストン(環状ピストン)
125T 第2環状ピストン(環状ピストン)
127S 第1ベーン(ベーン)
127T 第2ベーン(ベーン)
128S 第1ベーン溝(ベーン溝)
128T 第2ベーン溝(ベーン溝)
129S 第1圧力導入路
129T 第2圧力導入路
130S 第1作動室(作動室)
130T 第2作動室(作動室)
131S 第1吸入室(吸入室)
131T 第2吸入室(吸入室)
133S 第1圧縮室(圧縮室)
133T 第2圧縮室(圧縮室)
135S 第1吸入孔(吸入孔)
135T 第2吸入孔(吸入孔)
136 冷媒通路
140 中間仕切板
151 副軸部
152S 第1偏心部(偏心部)
152T 第2偏心部(偏心部)
153 主軸部
155 給油縦孔
155a 給油縦孔
155b 嵌合縦孔
156a、156c 第1給油横孔(給油横孔)
156b、156d 第2給油横孔(給油横孔)
157 ポンプ羽根
157a 羽根部
157b 基部
159A、159B 給油機構
160S 下端板(端板)
160T 上端板(端板)
161S 副軸受部
161T 主軸受部
170S 下マフラーカバー
170T 上マフラーカバー
175 通しボルト
180S 下マフラー室
180T 上マフラー室
190S 第1吐出孔(吐出孔)
190T 第2吐出孔(吐出孔)
200S 第1吐出弁
200T 第2吐出弁
201S 第1吐出弁押え
201T 第2吐出弁押え
252 アキュムホルダー
253 アキュムバンド
255 システム接続管
R 開口部
Claims (2)
- 上部に冷媒の吐出部が設けられ下部に冷媒の吸入部が設けられると共に潤滑油が貯留される密閉された縦置きの圧縮機筐体と、
該圧縮機筐体の下部に配置され、前記吸入部から吸入した冷媒を圧縮して前記吐出部から吐出する圧縮部と、
前記圧縮機筐体の上部に配置され、回転軸を介して前記圧縮部を駆動するモータと、
前記圧縮機筐体の下部に貯留された潤滑油を前記回転軸の給油縦孔及び給油横孔を通して前記圧縮部の摺動部分に供給する給油機構と、
を備えるロータリ圧縮機において、
前記給油機構の給油横孔は、
前記回転軸に設けられ前記圧縮部の環状ピストンをシリンダ内で公転させる偏心部の偏心方向と同一方向と、前記同一方向から前記回転軸の回転方向と逆方向に80°位相をずらした方向との間に形成されていることを特徴とするロータリ圧縮機。 - 前記給油横孔は、前記回転軸を貫通していることを特徴とする請求項1に記載のロータリ圧縮機。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14842888.1A EP3043070B1 (en) | 2013-09-06 | 2014-01-29 | Rotary compressor |
CN201480025092.7A CN105164422B (zh) | 2013-09-06 | 2014-01-29 | 旋转式压缩机 |
US14/897,075 US9951774B2 (en) | 2013-09-06 | 2014-01-29 | Lubrication of a rotary compressor |
AU2014316483A AU2014316483B2 (en) | 2013-09-06 | 2014-01-29 | Rotary compressor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-185722 | 2013-09-06 | ||
JP2013185722A JP5561421B1 (ja) | 2013-09-06 | 2013-09-06 | ロータリ圧縮機 |
Publications (1)
Publication Number | Publication Date |
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WO2015033586A1 true WO2015033586A1 (ja) | 2015-03-12 |
Family
ID=51417008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2014/051979 WO2015033586A1 (ja) | 2013-09-06 | 2014-01-29 | ロータリ圧縮機 |
Country Status (6)
Country | Link |
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US (1) | US9951774B2 (ja) |
EP (1) | EP3043070B1 (ja) |
JP (1) | JP5561421B1 (ja) |
CN (1) | CN105164422B (ja) |
AU (1) | AU2014316483B2 (ja) |
WO (1) | WO2015033586A1 (ja) |
Families Citing this family (3)
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JP6578932B2 (ja) | 2015-12-21 | 2019-09-25 | 株式会社富士通ゼネラル | ロータリ圧縮機 |
CN112594185B (zh) * | 2020-12-04 | 2022-09-06 | 珠海格力节能环保制冷技术研究中心有限公司 | 泵体组件、压缩机以及具有其的空调器 |
EP4443005A1 (en) * | 2022-06-17 | 2024-10-09 | Samsung Electronics Co., Ltd. | Rotary compressor, and home appliance comprising same |
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JP2001073977A (ja) * | 1999-09-03 | 2001-03-21 | Sanyo Electric Co Ltd | 2段圧縮式ロータリコンプレッサ |
JP2004019506A (ja) | 2002-06-14 | 2004-01-22 | Hitachi Ltd | 密閉型回転圧縮機 |
US20120174620A1 (en) * | 2009-09-25 | 2012-07-12 | Toshiba Carrier Corporation | Hermetic compressor and refrigeration cycle equipment using the same |
JP5014346B2 (ja) * | 2006-08-22 | 2012-08-29 | パナソニック株式会社 | 膨張機一体型圧縮機およびそれを備えた冷凍サイクル装置 |
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US4640669A (en) * | 1984-11-13 | 1987-02-03 | Tecumseh Products Company | Rotary compressor lubrication arrangement |
CA1274494A (en) | 1984-11-13 | 1990-09-25 | Edwin L. Gannaway | Rotary compressor lubrication arrangement |
JPS61210285A (ja) * | 1985-03-14 | 1986-09-18 | Toshiba Corp | 回転式圧縮機 |
JP2006300048A (ja) | 2005-03-24 | 2006-11-02 | Matsushita Electric Ind Co Ltd | 密閉型圧縮機 |
JP4420040B2 (ja) | 2007-02-19 | 2010-02-24 | 三菱電機株式会社 | 圧縮機 |
US8814546B2 (en) * | 2009-08-10 | 2014-08-26 | Lg Electronics Inc. | Compressor |
EP2489879A4 (en) * | 2009-10-14 | 2015-08-05 | Panasonic Ip Man Co Ltd | COMPRESSOR |
CN102734168A (zh) | 2011-04-08 | 2012-10-17 | 广东美芝制冷设备有限公司 | 一种旋转式压缩机偏心曲轴的供油孔结构 |
CN102734171B (zh) | 2012-07-03 | 2015-06-10 | 南京奥特佳新能源科技有限公司 | 商用涡旋式压缩机动平衡供油机构 |
-
2013
- 2013-09-06 JP JP2013185722A patent/JP5561421B1/ja active Active
-
2014
- 2014-01-29 US US14/897,075 patent/US9951774B2/en active Active
- 2014-01-29 CN CN201480025092.7A patent/CN105164422B/zh active Active
- 2014-01-29 WO PCT/JP2014/051979 patent/WO2015033586A1/ja active Application Filing
- 2014-01-29 EP EP14842888.1A patent/EP3043070B1/en active Active
- 2014-01-29 AU AU2014316483A patent/AU2014316483B2/en not_active Ceased
Patent Citations (4)
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JP2001073977A (ja) * | 1999-09-03 | 2001-03-21 | Sanyo Electric Co Ltd | 2段圧縮式ロータリコンプレッサ |
JP2004019506A (ja) | 2002-06-14 | 2004-01-22 | Hitachi Ltd | 密閉型回転圧縮機 |
JP5014346B2 (ja) * | 2006-08-22 | 2012-08-29 | パナソニック株式会社 | 膨張機一体型圧縮機およびそれを備えた冷凍サイクル装置 |
US20120174620A1 (en) * | 2009-09-25 | 2012-07-12 | Toshiba Carrier Corporation | Hermetic compressor and refrigeration cycle equipment using the same |
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Title |
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See also references of EP3043070A4 |
Also Published As
Publication number | Publication date |
---|---|
US20160131137A1 (en) | 2016-05-12 |
AU2014316483B2 (en) | 2017-02-16 |
EP3043070B1 (en) | 2020-11-04 |
CN105164422B (zh) | 2016-11-23 |
EP3043070A4 (en) | 2017-05-24 |
JP2015052299A (ja) | 2015-03-19 |
JP5561421B1 (ja) | 2014-07-30 |
US9951774B2 (en) | 2018-04-24 |
EP3043070A1 (en) | 2016-07-13 |
CN105164422A (zh) | 2015-12-16 |
AU2014316483A1 (en) | 2015-12-17 |
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