WO2006006297A1 - 回転式流体機械 - Google Patents
回転式流体機械 Download PDFInfo
- Publication number
- WO2006006297A1 WO2006006297A1 PCT/JP2005/008637 JP2005008637W WO2006006297A1 WO 2006006297 A1 WO2006006297 A1 WO 2006006297A1 JP 2005008637 W JP2005008637 W JP 2005008637W WO 2006006297 A1 WO2006006297 A1 WO 2006006297A1
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- WO
- WIPO (PCT)
- Prior art keywords
- piston
- cylinder
- chamber
- blade
- cylinder chamber
- Prior art date
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Classifications
-
- 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
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/04—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal-axis type
- F04C18/045—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal-axis type having a C-shaped piston
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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
- 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
- F04C18/32—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 both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members
-
- 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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
- F04C2230/602—Gap; Clearance
-
- 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
- F04C2240/20—Rotors
Definitions
- the present invention relates to a rotary fluid machine, and particularly relates to measures against a gap between a cylinder and a piston.
- a fluid machine has an eccentric cylinder having a cylinder having an annular cylinder chamber and an annular piston housed in the cylinder chamber and performing eccentric rotational movement.
- a compressor having a rotary piston mechanism.
- the fluid machine compresses the refrigerant by changing the volume of the cylinder chamber accompanying the eccentric rotational movement of the piston.
- Patent Document 1 Japanese Patent Laid-Open No. 6-288358
- the conventional fluid machine has a force that does not take into account a gap generated between the wall surface of the cylinder and the wall surface of the piston. As a result, there was a problem that the refrigerant leaked from the high pressure chamber to the low pressure chamber, resulting in poor efficiency.
- the present invention has been made in view of such a point, and an object of the present invention is to improve the efficiency by reducing a gap generated between the wall surface of the cylinder and the wall surface of the piston. .
- the first invention includes a cylinder (21) having an annular cylinder chamber (50), and a cylinder chamber (50) eccentric to the cylinder (21). ) And an annular piston (22) dividing the cylinder chamber (50) into an outer working chamber (51) and an inner working chamber (52), Rotation in which the cylinder (21) and the piston (22) rotate relatively with a blade (23) arranged in the cylinder chamber (50) and dividing each working chamber into a high pressure side and a low pressure side It has a mechanism (20).
- the cylinder chamber (50) has a width T1 of the cylinder chamber (50) such that the clearance between the wall surface of the cylinder (21) and the wall surface of the piston (22) during rotation is a predetermined value. Change in the first lap of the room (50)! /!
- the second invention is a cylinder (21) having an annular cylinder chamber (50), and is stored in the cylinder chamber (50) eccentrically with respect to the cylinder (21).
- An annular piston (22) that divides the working chamber (51) and the inner working chamber (52) and the cylinder chamber (50), and each working chamber is divided into a high pressure side and a low pressure side.
- a rotating mechanism (20) that rotates relative to the cylinder (21) and the piston (22) without rotating the cylinder (21) and the piston (22). ing.
- the piston (22) has a piston T (22) having a width T2 of the piston (22) such that a clearance between the wall of the cylinder (21) and the wall of the piston (22) during rotation is a predetermined value.
- the cylinder chamber (50) has a predetermined gap between the wall surface of the cylinder (21) and the wall surface of the piston (22) during rotation. As described above, the width T1 of the cylinder chamber (50) is changed in one cycle of the cylinder chamber (50)!
- the width T1 of the cylinder chamber (50) changes over the circumference of the cylinder chamber (50) V, and the width T2 of the piston (22) 22), the gap generated between the wall surface of the cylinder (21) and the wall surface of the piston (22) is minimized.
- the width of the cylinder chamber (50) is as follows.
- T1 is formed from the starting point of one turn of the cylinder chamber (50) to the center line of the blade (23), and is wide from the starting point to 180 degrees, narrower than 180 degrees and less than 360 degrees.
- the gap generated between the wall surface of the cylinder (21) and the wall surface of the piston (22) is more reliably minimized.
- the center of the inner wall circle in plan view and the center of the outer wall circle in the cylinder chamber (50) are different.
- the cylinder chamber (50) includes:
- the cylinder (21) and the piston (22) are reliably positioned between the wall surface of the cylinder (21) and the wall surface of the piston (22) in the entire region of relative rotation between the cylinder (21) and the piston (22). The resulting gap is minimized.
- the piston (22) and the blade (23) are relatively swung at a predetermined rocking center.
- the width T2 of the piston (22) is such that the starting point of one revolution of the piston (22) is the center of oscillation between the piston (22) and the blade (23), and narrows to 180 degrees from the starting point. The degree is widely formed.
- the gap generated between the wall surface of the cylinder (21) and the wall surface of the piston (22) is more reliably minimized.
- the center of the inner wall circle in plan view of the piston (22) is different from the center of the outer wall circle.
- the piston (22) is easily created because the center of the inner wall and the outer wall of the piston (22) are different.
- the piston (22) and the blade (23) are relatively oscillated at a predetermined oscillation center, and
- the piston (22) is divided into four regions in the circumferential direction, narrow and narrow regions (Wl, W3) and wide and wide regions (W2, W4). Are formed to be alternately continuous.
- the cylinder (21) and the piston (22) are securely disposed between the wall surface of the cylinder (21) and the wall surface of the piston (22) in the entire region of relative rotation between the cylinder (21) and the piston (22). The resulting gap is minimized.
- the piston (22) of the rotating mechanism (20) is formed in a C-shape having a dividing portion in which a part of the annular ring is divided.
- the blade (23) of the rotating mechanism (20) extends from the inner peripheral wall surface of the cylinder chamber (50) to the outer peripheral wall surface, and is provided through the dividing portion of the piston (22). .
- the swinging bush that is in surface contact with the piston (22) and the blade (23) allows the blade (23) to move forward and backward, and the piston of the blade (23) ( Relative oscillation with 22) is provided freely.
- the blade (23) moves forward and backward between the swing bush (27) !, and the blade (23) and the swing bush (27) become a single body.
- the piston (22) is oscillated.
- the cylinder (21) and the piston (22) rotate while swinging relatively, and the rotating mechanism (20) performs a predetermined operation such as compression.
- the cylinder (21) and the piston ( 22) can be kept constant during one rotation.
- leakage of the refrigerant from the high pressure side to the low pressure side can be suppressed in the outer working chamber (51) and the inner working chamber (52).
- the efficiency can be improved.
- the width T1 of the cylinder chamber (50) is increased from 180 degrees from the starting point of one turn of the cylinder chamber (50) to more than 180 degrees and less than 360 degrees.
- the width T2 of the piston (22) is narrowed from the starting point of one turn of the piston (22) to 180 degrees and is widened from 180 degrees to 360 degrees. Therefore, it is possible to reliably suppress the leakage of the refrigerant throughout the entire rotation. For this reason, it is possible to reliably improve efficiency.
- the cylinder chamber (50) has an inner wall circle in plan view. While the center and the center of the outer wall circle are made different, according to the eighth invention, the center of the inner wall circle and the center of the outer wall circle in the plan view of the piston (22) are made different. The change of the width T1 of the cylinder chamber (50) and the change of the width T2 of the piston (22) can be easily performed.
- the cylinder chamber (50) has a wide and wide region portion (Zl, Z3) and a narrow narrow region portion (Z2, Z4) alternately continuous.
- the piston (22) has a narrow width !, a narrow area portion (Wl, W3) and a wide, wide area portion (W2, W4). Since the four regions are alternately formed, the cylinder (21) and the piston (22) are securely connected to the piston (22) during the entire region of relative rotation between the cylinder (21) and the piston (22). The gap generated between the wall surfaces can be minimized.
- the swing bush (27) is provided as a connecting member for connecting the piston (22) and the blade (23), and the swing bush (27) is provided with the piston (22 ) And the blade (23) are configured to be substantially in surface contact with each other, so that the piston (22) and the blade (23) can be prevented from being worn or burned-in during operation. .
- the swing bush (27) is provided so that the swing bush (27) and the piston (22) and the blade (23) are in surface contact with each other, the sealing performance of the contact portion is improved. Is also excellent. For this reason, it is possible to reliably prevent refrigerant leakage in the compression chamber (51) and the expansion chamber (52), and it is possible to prevent the compression efficiency and the expansion efficiency from being lowered.
- the blade (23) is provided integrally with the cylinder (21), and the cylinder is provided at both ends thereof.
- FIG. 1 is a longitudinal sectional view of a compressor according to Embodiment 1 of the present invention.
- FIG. 2 is a cross-sectional view showing a compressor.
- FIG. 3 is a cross-sectional view showing the operation of the compressor.
- FIG. 4 (A) is a cross-sectional view of the cylinder
- FIG. [FIG. 5] FIG. 5 (A) is a cross-sectional view of the piston
- FIG. 5 (B) is a change characteristic diagram showing changes in the width of the piston.
- Fig. 6 is a cross-sectional view showing the action direction of the gas load for each operation of the compressor.
- FIG. 7 is a cross-sectional view showing the cylinder of the second embodiment.
- FIG. 8 is a cross-sectional view showing the piston of the second embodiment.
- Fig. 9 is a change characteristic diagram showing a change in the geometric gap between the cylinder and the piston. Explanation of symbols
- the present invention is applied to a compressor (1).
- the compressor (1) is provided, for example, in a refrigerant circuit.
- the refrigerant circuit is configured to perform at least one of cooling and heating, for example. That is, the refrigerant circuit is, for example, a compressor (1) with a heat source side heat exchanger. An outdoor heat exchanger ⁇ , an expansion valve that is an expansion mechanism, and an indoor heat exchanger that is a user side heat exchanger are connected in order.
- the refrigerant compressed by the compressor (1) dissipates heat in the outdoor heat exchanger and then expands in the expansion valve.
- the expanded refrigerant absorbs heat in the indoor heat exchanger and returns to the compressor (1). This circulation is repeated and the indoor air is cooled by the indoor heat exchanger.
- the compressor (1) is a rotary fluid machine in which a compression mechanism (20) and an electric motor (30) are housed in a casing (10) and configured in a hermetically sealed type.
- the casing (10) includes a cylindrical body (11), an upper end plate (12) fixed to the upper end of the body (11), and a lower end of the body (11). It consists of a fixed lower end plate (13).
- the upper end plate (12) is provided with a suction pipe (14) passing through the end plate (12).
- the suction pipe (14) is connected to the indoor heat exchanger.
- the body (11) is provided with a discharge pipe (15) penetrating the body (11).
- the discharge pipe (15) is connected to outdoor heat exchange.
- the electric motor (30) includes a stator (31) and a rotor (32), and constitutes a drive mechanism.
- the stator (31) is disposed below the compression mechanism (20) and is fixed to the body (11) of the casing (10).
- a drive shaft (33) is connected to the rotor (32), and the drive shaft (33) is configured to rotate together with the rotor (32).
- the drive shaft (33) is provided with an oil supply passage (not shown) extending in the axial direction inside the drive shaft (33).
- An oil supply pump (34) is provided at the lower end of the drive shaft (33).
- the oil supply passage extends upward from the oil supply pump (34).
- the oil supply passage supplies the lubricating oil stored in the bottom of the casing (10) to the sliding portion of the compression mechanism (20) by the oil supply pump (34).
- the drive shaft (33) has an eccentric portion (35) formed on the upper portion thereof.
- the eccentric part (35) is formed with a larger diameter than the upper and lower parts of the eccentric part (35), and is eccentric from the axis of the drive shaft (33) by a predetermined amount.
- the compression mechanism (20) constitutes a rotation mechanism, and is configured between an upper housing (16) fixed to the casing (10) and a lower housing (17).
- the compression mechanism (20) includes a cylinder (21) having an annular cylinder chamber (50), and the cylinder An annular piston (22) disposed in the chamber (50) and dividing the cylinder chamber (50) into an outer compression chamber (51) and an inner compression chamber (52), and an outer compression as shown in FIG. And a blade (23) that divides the chamber (51) and the inner compression chamber (52) into a high pressure side and a low pressure side.
- the piston (22) is configured to perform an eccentric rotational motion relative to the cylinder (21) in the cylinder chamber (50). That is, the piston (22) and the cylinder (21) rotate relatively eccentrically.
- the cylinder (21) having the cylinder chamber (50) constitutes a movable side cooperating member
- the piston (22) disposed in the cylinder chamber (50) serves as a fixed side cooperating member. It is composed.
- the cylinder (21) includes an outer cylinder (24) and an inner cylinder (25).
- the outer cylinder (24) and the inner cylinder (25) are integrated by connecting the lower end portions thereof with the end plate (26).
- the inner cylinder (25) is slidably fitted into the eccentric part (35) of the drive shaft (33). That is, the drive shaft (33) penetrates the cylinder chamber (50) upward and downward.
- the piston (22) is formed integrally with the upper housing (16).
- the upper housing (16) and the lower housing (17) are respectively formed with bearing portions (18, 19) for supporting the drive shaft (33).
- the drive shaft (33) penetrates the cylinder chamber (50) in the vertical direction, and the axially opposite side portions of the eccentric portion (35) are bearing portions ( It has a through-shaft structure that is held by the casing (10) through 18, 19).
- the compression mechanism (20) includes a swing bush (27) for movably connecting the piston (22) and the blade (23) to each other.
- the piston (22) is formed in a C shape in which a part of the ring is divided.
- the blade (23) extends on the radial line of the cylinder chamber (50) from the inner peripheral wall surface to the outer peripheral wall surface of the cylinder chamber (50) through the dividing portion of the piston (22). And is fixed to the outer cylinder (24) and the inner cylinder (25).
- the swing bush (27) constitutes a connecting member for connecting the piston (22) and the blade (23) at the dividing portion of the piston (22).
- the inner peripheral surface of the outer cylinder (24) and the outer peripheral surface of the inner cylinder (25) are cylindrical surfaces arranged on the same center, and one cylinder chamber (50) is formed therebetween.
- the piston (22) has an outer peripheral surface with a smaller diameter than the inner peripheral surface of the outer cylinder (24), and the inner peripheral surface is the inner surface. It is formed larger in diameter than the outer peripheral surface of the side cylinder (25).
- an outer compression chamber (51) which is a working chamber, is formed between the outer peripheral surface of the piston (22) and the inner peripheral surface of the outer cylinder (24), and the inner peripheral surface and inner side of the piston (22) are formed.
- An inner compression chamber (52), which is a working chamber, is formed between the outer peripheral surface of the cylinder (25).
- the outer peripheral surface of the piston (22) and the inner peripheral surface of the outer cylinder (24) are substantially in contact at one point (strictly speaking, a gap in the micron order)
- the inner surface of the piston (22) and the outer surface of the inner cylinder (25) are 1 They are actually touching at a point.
- the swing bush (27) includes a discharge side bush (2a) located on the discharge side with respect to the blade (23) and a suction side bush (2b located on the suction side with respect to the blade (23). ).
- the discharge-side bush (2a) and the suction-side bush (2b) are V, the cross-sections are substantially semicircular and are formed in the same shape, and are arranged so that the flat surfaces face each other.
- the space between the opposing surfaces of the discharge side bush (2a) and the suction side bush (2b) constitutes a blade groove (28).
- the blade (23) is inserted into the blade groove (28), the flat surface of the oscillating bush (27) is substantially in surface contact with the blade (23), and the arcuate outer peripheral surface is the piston (22 Is substantially in surface contact.
- the swing bush (27) is configured so that the blade (23) advances and retreats in the blade groove (28) in the surface direction in a state where the blade (23) is sandwiched between the blade grooves (28). At the same time, the swing bush (27) is configured to swing integrally with the blade (23) with respect to the piston (22).
- the swing bush (27) is configured such that the blade (23) and the piston (22) can swing relatively with the center point of the peristaltic bush (27) as the swing center, and the blade (23) is configured to be movable back and forth in the surface direction of the blade (23) with respect to the piston (22).
- the bushes (2a, 2b) are partially connected to each other. It may be a monolithic structure.
- the volume of the outer compression chamber (51) decreases outside the piston (22) in the order of FIGS. 3 (C), (D), (A), and (B).
- the volume of the inner compression chamber (52) decreases in the order of FIGS. 3 (A), (B), (C), and (D) inside the piston (22).
- the upper housing (16) is provided with an upper cover plate (40).
- the upper part of the upper housing (16) and the upper cover plate (40) is formed in the suction space (4a), and the lower part of the lower housing (17) is in the discharge space (4b). Is formed.
- One end of a suction pipe (14) is opened in the suction space (4a), and one end of a discharge pipe (15) is opened in the discharge space (4b).
- a chamber (4c) is formed between the upper housing (16) and the upper cover plate (40).
- the upper housing (16) is formed with a vertical hole (42) that opens into the suction space (4a) and is long in the radial direction and penetrates in the axial direction.
- the upper housing (16) and the lower housing (17) have pockets (4f) formed on the outer periphery of the outer cylinder (24).
- the pocket (4f) communicates with the suction space (4a) through the vertical hole (42) of the upper housing (16), and is configured in a low pressure atmosphere of suction pressure.
- the vertical hole (42) of the upper housing (16) is formed on the right side of the blade (23) in FIG.
- the vertical hole (42) opens to the outer compression chamber (51) and the inner compression chamber (52), and communicates the outer compression chamber (51) and the inner compression chamber (52) with the suction space (4a).
- the outer cylinder (24) and the piston (22) are formed with a lateral hole (43) penetrating in the radial direction, and the lateral hole (43) is formed on the right side of the blade (23) in FIG. Is formed.
- the lateral hole (43) of the outer cylinder (24) communicates the outer compression chamber (51) and the pocket (4f), and communicates the outer compression chamber (51) to the suction space (4a).
- the lateral hole (43) of the piston (22) communicates the inner compression chamber (52) and the outer compression chamber (51), and communicates the inner compression chamber (52) to the suction space (4a).
- the vertical holes (42) and the horizontal holes (43) respectively serve as refrigerant inlets. It is composed.
- the refrigerant inlet may be formed with only one of the vertical hole (42) and the horizontal hole (43).
- Two discharge ports (44) are formed in the upper housing (16).
- the discharge port (44) passes through the upper housing (16) in the axial direction.
- One end of the one discharge port (44) faces the high pressure side of the outer compression chamber (51), and one end of the other discharge port (44) opens so as to face the high pressure side of the inner compression chamber (52). .
- the discharge port (44) is formed in the vicinity of the blade (23), and is located on the opposite side of the vertical hole (42) with respect to the blade (23).
- the other end of the outlet (44) communicates with the chamber (4c).
- the outer end of the discharge port (44) is provided with a discharge valve (45) which is a reed valve that opens and closes the discharge port (44).
- the chamber (4c) and the discharge space (4b) communicate with each other through a discharge passage (4g) formed in the upper housing (16) and the lower housing (17).
- the lower housing (17) is provided with a seal ring (6a).
- the seal ring (6a) is loaded into the annular groove of the lower housing (17) and is pressed against the lower surface of the end plate (26) of the cylinder (21). Furthermore, high pressure lubricating oil is introduced into the contact surface between the cylinder (21) and the lower housing (17) in the radially inner portion of the seal ring (6a).
- the seal ring (6a) constitutes a compliance mechanism (60) for adjusting the axial position of the cylinder (21), and the piston (22), the cylinder (21), and the upper housing (16). The axial gap between them is reduced.
- the cylinder chamber (50) has a cylinder chamber (50) such that the gap between the wall surface of the cylinder (21) and the wall surface of the piston (22) during rotation is a predetermined value.
- the width T1 of 50) will change! / To one round of the cylinder chamber (50)!
- the piston (22) has a predetermined value so that the gap between the wall surface of the cylinder (21) and the wall surface of the piston (22) during rotation is a predetermined value.
- the width T2 of the piston (22) will change!
- the width T1 of the cylinder chamber (50) is set to the center line of the blade (23) at the start point of one turn of the cylinder chamber (50), and extends from the start point to 180 degrees. It is narrow and formed. Specifically, the center of the inner wall circle in plan view in the cylinder chamber (50) is different from the center of the outer wall circle. In other words, the center of the inner wall circle of the cylinder chamber (50) is the center of the outer wall circle. The angle of rotation is 270 degrees. As a result, the width T1 of the cylinder chamber (50) increases from the rotation angle of 0 degree and becomes the widest at the rotation angle of 90 degrees.
- the width T1 of the cylinder chamber (50) is narrowed to a rotation angle of 270 degrees, and becomes the narrowest at the rotation angle of 270 degrees. Furthermore, the width T1 of the cylinder chamber (50) increases from a rotation angle of 270 degrees to a rotation angle of 0 degrees.
- the width T1 of the cylinder chamber (50) may be widened from 70 degrees to 160 degrees and narrowed from 250 degrees to 340 degrees.
- the width T2 of the piston (22) exceeds 180 degrees narrowing from the starting point to 180 degrees with the starting point of one revolution of the piston (22) being the center of oscillation of the piston (22) and the blade (23). Up to 360 degrees is widely formed. Specifically, the center of the inner wall circle in plan view of the piston (22) is different from the center of the outer wall circle. That is, the center of the outer wall circle of the piston (22) is displaced in the direction of a rotation angle of 270 degrees from the center of the inner wall circle. As a result, the width T2 of the piston (22) is narrowed from a rotation angle of 0 degree and is the narrowest at a rotation angle of 90 degrees.
- the width T2 of the piston (22) is widened up to a rotational angle of 270 degrees, and is widest at the rotational angle of 270 degrees. Further, the width T2 of the piston (22) is narrowed from a rotation angle of 270 degrees to a rotation angle of 0 degrees.
- width T2 of the piston (22) only needs to be formed broadly between 250 degrees and 340 degrees, narrowing between 70 degrees and 160 degrees.
- the refrigerant pressure that is, the acting direction of the gas load changes.
- the line passing through the oscillation center of the piston (22) centered on the axis of the drive shaft (the center of the blade) is defined as the Y axis
- the line orthogonal to the Y axis is defined as the X axis.
- the piston (22) is located at the bottom dead center.
- the outer compression chamber (51) is divided into a suction-side low pressure chamber (5b) and a discharge-side high pressure chamber (5a), while the inner compression chamber (52) It is formed in one chamber and is a low-pressure chamber (5b) with suction pressure. Therefore, only the gas load of the high pressure chamber (5a) of the outer compression chamber (51) acts on the cylinder (21) and the piston (22), and acts on the projection surface of the cylinder chamber (50).
- the direction of action is the left direction in Fig. 6 in the direction of the X axis.
- the outer compression chamber (51) When the cylinder (21) rotates 90 degrees to reach the state shown in Fig. 6 (B), the outer compression chamber (51) , The volume of the low pressure chamber (5b) increases and the volume of the high pressure chamber (5a) decreases.
- the inner compression chamber (52) is divided into a low pressure chamber (5b) on the suction side and a high pressure chamber (5a) on the discharge side, and the compression of the high pressure chamber (5a) and the suction of the low pressure chamber (5b) And done. Therefore, the gas load of the high pressure chamber (5a) of the outer compression chamber (51) and the inner compression chamber (52) acts on the cylinder (21) and the piston (22), and the projection surface of the cylinder chamber (50). Act on.
- the direction of action is the upper left direction in Fig. 6, 45 degrees ahead of the X axis.
- the outer cylinder (24) and the piston (22) are close to each other at the left end of the X axis. Since the cylinder (21) is pressed in the direction of the gas load, the gap Ml between the outer cylinder (24) and the piston (22) is increased, and at the right end of the X axis, The gap N1 between the inner cylinder (25) and the piston (22) is increased.
- the piston (22) is located at the top dead center.
- the inner compression chamber (52) is divided into a low-pressure chamber (5b) on the suction side and a high-pressure chamber (5a) on the discharge side, while the outer compression chamber (51) is a single chamber.
- the action direction is the right direction in FIG.
- the cylinder (21) rotates 90 degrees to reach the state shown in Fig. 6 (D)
- the volume of the low pressure chamber (5b) increases in the inner compression chamber (52), and the high pressure chamber (5a)
- the outer compression chamber (51) is divided into a low pressure chamber (5b) on the suction side and a high pressure chamber (5a) on the discharge side, and the compression of the high pressure chamber (5a) and the suction of the low pressure chamber (5b) And done. Therefore, the gas load of the high pressure chamber (5a) of the outer compression chamber (51) and the inner compression chamber (52) acts on the cylinder (21) and the piston (22), and the projection surface of the cylinder chamber (50). Act on.
- the direction of action is the lower right direction in Fig. 6, 45 degrees ahead of the X axis.
- the inner cylinder (25) and the piston (22) are close to each other at the left end of the X axis. Since the cylinder (21) is pressed in the direction of the gas load, the gap M2 between the inner cylinder (25) and the piston (22) is increased, and at the right end of the X-axis, The gap N2 between the outer cylinder (24) and the piston (22) is increased.
- the center of the inner wall circle of the cylinder chamber (50) is displaced in the direction of the rotation angle of 270 degrees from the center of the outer wall circle, and the width T1 of the cylinder chamber (50) is most It is preferable to make it the narrowest at a wide rotation angle of 270 degrees.
- the center of the outer wall circle of the piston (22) It is preferable to displace the piston (22) in the direction of a rotation angle of 270 degrees from the center of the wall circle so that the width T2 of the piston (22) is the widest at the rotation angle of 270 degrees that is the narrowest at the rotation angle of 90.
- the gap Ml and the gap M2 are narrowed. Therefore, as shown in FIGS. 4 and 5 as described above, the widths Tl and T2 of the cylinder chamber (50) and the piston (22) are set!
- the discharge valve (45) is opened by the high-pressure refrigerant in the outer compression chamber (51), and the high pressure The refrigerant flows out from the discharge space (4b) to the discharge pipe (15).
- the inner compression chamber (52) starts the suction stroke when the drive shaft (33) rotates clockwise in the state force of Fig. 3 (A) where the piston (22) is at bottom dead center. 3 (B), FIG. 3 (C), and FIG. 3 (D), the volume of the inner compression chamber (52) increases, and the refrigerant passes through the vertical hole (42) and the horizontal hole (43). Inhaled.
- the discharge valve (45) is opened by the high-pressure refrigerant in the inner compression chamber (52), and the high pressure The refrigerant flows out from the discharge space (4b) to the discharge pipe (15).
- the width T1 of the cylinder chamber (50) is the narrowest at a rotation angle of 270 degrees which is the widest at the rotation angle 90, while the width T2 of the piston (22) is the narrowest at the rotation angle of 90.
- the rotation angle is 270 degrees. Therefore, during one rotation, the gap Ml and the gap M2 are narrowed, and the gap between the cylinder (21) and the piston (22) is kept narrow.
- the outer cylinder (24) and the piston can be kept constant during one rotation.
- leakage of the refrigerant from the high pressure side to the low pressure side can be suppressed in the outer compression chamber (51) and the inner compression chamber (52). This can improve efficiency.
- the width T1 of the cylinder chamber (50) is wide from the start point of one turn of the cylinder chamber (50) to 180 degrees, narrower than 180 degrees and less than 360 degrees, while the piston ( The width T2 of 22) is narrowed from the starting point of the first round of the piston (22) to 180 degrees, and it is widely formed from 180 degrees to 360 degrees.
- the width T2 of 22 is narrowed from the starting point of the first round of the piston (22) to 180 degrees, and it is widely formed from 180 degrees to 360 degrees.
- a swing bush (27) is provided as a connecting member for connecting the piston (22) and the blade (23), and the swing bush (27) is substantially connected to the piston (22) and the blade (23). Since it is configured to make surface contact with the piston, it is possible to prevent the piston (22) and the blade (23) from being worn during operation and the contact portion from being seized.
- the swing bush (27) is provided so that the swing bush (27) and the piston (22) and the blade (23) are in surface contact with each other, the sealing performance of the contact portion is improved. Is also excellent. For this reason, it is possible to reliably prevent refrigerant leakage in the outer compression chamber (51) and the inner compression chamber (52), and it is possible to prevent a reduction in compression efficiency.
- the blade (23) is provided integrally with the cylinder (21), and the cylinders are provided at both ends thereof.
- the first embodiment changes the width T 1 of the cylinder chamber (50) and the width T2 of the piston (22) in two regions. Instead, it is designed to change in four areas.
- the cylinder chamber (50) is divided into four regions in the circumferential direction, with a wide wide region portion (Zl, Z3) and a narrow narrow region portion (Z2, And Z4) are alternately continuous.
- the piston (22) is divided into four regions in the circumferential direction so that the narrow narrow region (Wl, W3) and the wide wide region (W2, W4) continue alternately. Is formed.
- the cylinder chamber (50) is, as shown in FIG. 7, a first region sandwiching the blade (23).
- the part (Zl) is formed in the range of 90 degrees as the wide area part (Z1).
- a second region portion (Z2) that is a narrow region portion (Z2)
- a third region portion (Z3) that is a wide region portion (Z3)
- the fourth region (Z4) which is the narrow region (Z4), is formed in the range of 90 degrees in order.
- the first region (W1) sandwiching the divided portion of the swing bush (27) is 90 ° as the narrow region (W1). Formed in a range.
- the fourth region portion (W4), which is the wide region portion (W4), is formed in the range of 90 degrees in order.
- the present invention may be configured as follows for the first and second embodiments.
- the cylinder (21) may be a fixed side
- the piston (22) may be a movable side
- the cylinder (21) has an outer cylinder (24) and an inner cylinder (25) at the upper end.
- the piston (22) may be formed integrally with the lower housing (17) by connecting with a mirror plate (26).
- the piston (22) may be formed in a complete ring shape having no dividing portion.
- the blade (23) is divided into an outer blade (23) and an inner blade (23), and the outer blade (23) advances and retreats from the outer cylinder (21) to contact the piston (22), and the inner blade ( 23) move forward and backward from the inner cylinder (21) so that it contacts the piston (22)
- the rotary fluid machine of the present invention may of course be an expander that expands the refrigerant, a pump, or the like!
- the present invention is useful for a rotary fluid machine having an outer working chamber and an inner working chamber.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020077003076A KR100812934B1 (ko) | 2004-07-09 | 2005-05-11 | 회전식 유체기계 |
US10/573,889 US7534100B2 (en) | 2004-07-09 | 2005-05-11 | Rotary fluid machine |
AU2005261267A AU2005261267B2 (en) | 2004-07-09 | 2005-05-11 | Rotary fluid machine |
EP05739311A EP1674731B1 (en) | 2004-07-09 | 2005-05-11 | Rotary fluid machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-203665 | 2004-07-09 | ||
JP2004203665A JP3724495B1 (ja) | 2004-07-09 | 2004-07-09 | 回転式流体機械 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006006297A1 true WO2006006297A1 (ja) | 2006-01-19 |
Family
ID=35500463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008637 WO2006006297A1 (ja) | 2004-07-09 | 2005-05-11 | 回転式流体機械 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7534100B2 (ja) |
EP (1) | EP1674731B1 (ja) |
JP (1) | JP3724495B1 (ja) |
KR (1) | KR100812934B1 (ja) |
CN (1) | CN100443727C (ja) |
AU (1) | AU2005261267B2 (ja) |
WO (1) | WO2006006297A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101925744B (zh) * | 2008-01-24 | 2013-03-20 | 大金工业株式会社 | 旋转式流体机械 |
JP4396773B2 (ja) * | 2008-02-04 | 2010-01-13 | ダイキン工業株式会社 | 流体機械 |
CN101251106A (zh) * | 2008-04-01 | 2008-08-27 | 贲铭鑫 | 转动式流体机械变容机构 |
CN102767519A (zh) * | 2011-05-06 | 2012-11-07 | 广东美芝制冷设备有限公司 | 旋转压缩机 |
KR101144288B1 (ko) * | 2011-10-11 | 2012-05-11 | 전광석 | 공기 압축기 |
CN103835948B (zh) * | 2012-11-22 | 2016-08-03 | 珠海格力节能环保制冷技术研究中心有限公司 | 压缩机泵体及压缩机 |
KR101973623B1 (ko) | 2012-12-28 | 2019-04-29 | 엘지전자 주식회사 | 압축기 |
KR101983049B1 (ko) * | 2012-12-28 | 2019-09-03 | 엘지전자 주식회사 | 압축기 |
CA2928469C (en) * | 2013-11-25 | 2019-08-06 | Halliburton Energy Services, Inc. | Nutating fluid-mechanical energy converter |
US9657519B2 (en) | 2014-01-30 | 2017-05-23 | Halliburton Energy Services, Inc. | Nutating fluid-mechanical energy converter to power wellbore drilling |
CN106168214A (zh) * | 2016-06-29 | 2016-11-30 | 珠海格力节能环保制冷技术研究中心有限公司 | 一种转缸增焓活塞压缩机及具有其的空调系统 |
CN106050653B (zh) * | 2016-07-08 | 2019-12-27 | 珠海格力电器股份有限公司 | 泵体组件及具有其的压缩机 |
JP7082000B2 (ja) * | 2018-06-29 | 2022-06-07 | 株式会社明治 | 経口摂取品開発支援方法及び経口摂取品開発支援システム |
TWI726764B (zh) * | 2020-07-07 | 2021-05-01 | 楊進煌 | 迴轉式流體傳送裝置 |
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JPS6092789U (ja) * | 1983-11-30 | 1985-06-25 | 三菱重工業株式会社 | リング揺動型流体機械 |
JPH06288358A (ja) * | 1991-04-26 | 1994-10-11 | Tecumseh Prod Co | 旋回運動型ロータリ圧縮機 |
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US3125031A (en) * | 1964-03-17 | Multi-chamber rotary pump | ||
US3125032A (en) * | 1964-03-17 | Rotary pump | ||
US1229676A (en) * | 1915-07-28 | 1917-06-12 | Francis D Tice | Pump. |
US1780109A (en) * | 1927-05-11 | 1930-10-28 | Vacuum Compressor Ab | Rotary machine |
US2561280A (en) * | 1946-12-27 | 1951-07-17 | Neptune Meter Co | Oscillating piston meter |
US3369399A (en) * | 1965-05-06 | 1968-02-20 | Worthington Corp | Measuring chamber bridge for use in water meters |
US3645653A (en) * | 1970-06-01 | 1972-02-29 | Valcor Eng Corp | Pump |
CH561842A5 (ja) * | 1971-12-10 | 1975-05-15 | Aginfor Ag | |
US4606711A (en) * | 1983-01-10 | 1986-08-19 | Nippon Soken, Inc. | Fluid pump with eccentrically driven C-shaped pumping member |
DE58900498D1 (de) * | 1988-09-20 | 1992-01-09 | Gutag Innovations Ag | Verdraengermaschine fuer inkompressible medien. |
US5165878A (en) * | 1989-02-10 | 1992-11-24 | Nippon Soken, Inc | Scroll type compressor with slide guide for preventing rotation of the moveable scroll |
JPH0629789U (ja) * | 1991-09-24 | 1994-04-19 | ニューマシン株式会社 | 香料付溶接棒 |
ES2120494T3 (es) * | 1992-04-28 | 1998-11-01 | Daikin Ind Ltd | Compresor giratorio con alabe y rodillo integrados. |
GR980100045A (el) * | 1998-01-30 | 1999-09-30 | Αντλια σχηματος ωμεγα | |
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US6336336B1 (en) * | 2000-03-20 | 2002-01-08 | Hitachi, Ltd. | Rotary piston compressor and refrigerating equipment |
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2004
- 2004-07-09 JP JP2004203665A patent/JP3724495B1/ja not_active Expired - Fee Related
-
2005
- 2005-05-11 EP EP05739311A patent/EP1674731B1/en not_active Not-in-force
- 2005-05-11 KR KR1020077003076A patent/KR100812934B1/ko not_active IP Right Cessation
- 2005-05-11 AU AU2005261267A patent/AU2005261267B2/en not_active Ceased
- 2005-05-11 CN CNB2005800226454A patent/CN100443727C/zh not_active Expired - Fee Related
- 2005-05-11 US US10/573,889 patent/US7534100B2/en not_active Expired - Fee Related
- 2005-05-11 WO PCT/JP2005/008637 patent/WO2006006297A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6092789U (ja) * | 1983-11-30 | 1985-06-25 | 三菱重工業株式会社 | リング揺動型流体機械 |
JPH06288358A (ja) * | 1991-04-26 | 1994-10-11 | Tecumseh Prod Co | 旋回運動型ロータリ圧縮機 |
Also Published As
Publication number | Publication date |
---|---|
EP1674731B1 (en) | 2012-12-12 |
JP3724495B1 (ja) | 2005-12-07 |
EP1674731A1 (en) | 2006-06-28 |
KR20070034093A (ko) | 2007-03-27 |
US20070036666A1 (en) | 2007-02-15 |
CN1981133A (zh) | 2007-06-13 |
AU2005261267A1 (en) | 2006-01-19 |
US7534100B2 (en) | 2009-05-19 |
JP2006022789A (ja) | 2006-01-26 |
AU2005261267B2 (en) | 2009-05-14 |
CN100443727C (zh) | 2008-12-17 |
EP1674731A4 (en) | 2012-04-18 |
KR100812934B1 (ko) | 2008-03-11 |
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