WO2005010371A1 - スクロール型流体機械 - Google Patents
スクロール型流体機械 Download PDFInfo
- Publication number
- WO2005010371A1 WO2005010371A1 PCT/JP2004/010625 JP2004010625W WO2005010371A1 WO 2005010371 A1 WO2005010371 A1 WO 2005010371A1 JP 2004010625 W JP2004010625 W JP 2004010625W WO 2005010371 A1 WO2005010371 A1 WO 2005010371A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- scroll
- side wrap
- flat plate
- movable
- plate portion
- 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
- 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
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/023—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where both members are moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- 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
- F04C2240/50—Bearings
-
- 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
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
- F04C2250/102—Geometry of the inlet or outlet of the outlet
Definitions
- the present invention relates to a scroll type fluid machine.
- scroll-type fluid machines have been widely known, and are used for various purposes such as compressors for compressing a refrigerant in a refrigerating device.
- Japanese Patent Application Laid-Open No. 9-1126164 / 2002/235682 discloses a scroll type fluid machine having two sets of movable side and fixed side wraps which are engaged with each other.
- spiral wraps are erected on both sides of a flat plate portion of the movable scroll.
- a first fluid chamber is formed by combining a movable wrap erected on a front surface of a flat plate portion and a first fixed wrap, and a first fluid chamber is formed on a back surface of the flat plate portion.
- a second fluid chamber is formed by combining the upright movable wrap and the second fixed wrap.
- the present invention has been made in view of power and curl, and an object of the present invention is to provide a scroll-type fluid in which a fluid chamber is formed by two fixed-side and movable-side wraps provided. The goal is to reduce the size of the machine.
- a first invention provides a fixed scroll (40), a movable scroll (50), a rotating shaft (20) engaged with the movable scroll (50), and a rotation preventing mechanism for the movable scroll (50). It is intended for scroll-type fluid machines equipped with (39).
- the fixed scroll (40) includes a first fixed side member (41) including a first fixed side wrap (42) and a second fixed side member (46) including a second fixed side wrap (47).
- the movable scroll (50) is provided with an engaging portion (64) for engaging with the rotating shaft (20) on the back surface, and the front surface is in sliding contact with the first fixed side wrap (42).
- a second invention provides a fixed scroll (40), a movable scroll (50), a rotating shaft (20) engaged with the movable scroll (50), and a rotation preventing mechanism for the movable scroll (50). It is intended for scroll-type fluid machines equipped with (39).
- the fixed scroll (40) includes a first fixed side member (41) including a first fixed side wrap (42) and a second fixed side member (46) including a second fixed side wrap (47).
- the movable scroll (50) is provided with an engaging portion (64) for engaging with the rotating shaft (20) on the back surface, and the front surface is in sliding contact with the first fixed side wrap (42).
- a second movable side wrap (54) that meshes with the second flat plate portion (52), the second fixed side wrap (47) and the second fluid chamber (72), and the second movable side wrap A third flat plate portion (49) slidingly in contact with the second fixed side wrap (47) opposite to the second flat plate portion (52) with the (54) interposed therebetween;
- a third invention is the scroll-type fluid machine according to the first or second invention, wherein the first movable wrap (53) is formed integrally with the first flat plate portion (51), and The part (52) is formed separately from the first flat plate part (51) and the first movable side wrap (53).
- a fourth invention is the scroll fluid machine according to the third invention, wherein the second movable wrap (54) is formed integrally with the second flat plate portion (52).
- a fifth invention is directed to the scroll-type fluid machine according to the first or second invention, wherein the spiral direction of the first fixed side wrap (42) and the first movable side wrap (53) and the second fixed side wrap (53) are different from each other.
- the spiral directions of the wrap (47) and the second movable wrap (54) are different from each other.
- a sixth invention is directed to the scroll-type fluid machine according to the fifth invention, wherein the movable scroll
- a seventh invention is the scroll type fluid machine according to the sixth invention, wherein the third flat plate portion (49) has an introduction opening (66, 68, 69) communicating with the second fluid chamber (72). ) Are formed at different positions in the radial direction of the second fixed side wrap (47) or the second movable side wrap (54), and are opened and closed to open and close each of the introduction openings (66, 68, 69).
- a mechanism (85) is provided.
- An eighth invention is directed to the scroll-type fluid machine according to the first or second invention, wherein the spiral direction of the first fixed side wrap (42) and the first movable side wrap (53) and the second fixed side wrap (53)
- the spiral directions of the wrap (47) and the second movable wrap (54) are the same as each other.
- a ninth invention is directed to the scroll-type fluid machine according to the eighth invention, wherein the first fluid chamber (71) and the second fluid chamber (72) have a ratio of a maximum value to a minimum value for each volume. Are different from each other.
- the first fluid chamber (71) and the second fluid chamber (72) are each a ratio of a maximum value to a minimum value for each volume. Are equal to each other.
- An eleventh invention is directed to the scroll-type fluid machine according to the eighth invention, wherein a fluid compressed in one of the first fluid chamber (71) and the second fluid chamber (72) is introduced to the other. Then, it is configured to further compress.
- the orbiting scroll (50) rotates while being guided by the rotation preventing mechanism (39), and performs only the orbital movement while the rotation is restricted.
- the volumes of the first fluid chamber (71) and the second fluid chamber (72) change with the orbital movement of the orbiting scroll (50).
- an engagement portion (64) is provided on the back surface of the first flat plate portion (51), and the engagement portion (64) is engaged with the rotating shaft (20).
- a first movable side wrap (53) is provided on the front side of the first flat plate portion (51).
- the first movable side wrap (53) is combined with the first fixed side wrap (42) of the first fixed side member (41) to form a first fluid chamber (71).
- the first fixed side wrap (42) has one end surface in sliding contact with the front surface of the first flat plate portion (51), and the other end surface in sliding contact with the rear surface of the second flat plate portion (52).
- the first fluid chamber (71) is defined by a first movable side wrap (53), a first fixed side wrap (42), a first flat plate portion (51), and a second flat plate portion (52).
- a second movable wrap (54) is provided on the front side of the second flat plate portion (52).
- the second movable side wrap (54) is engaged with the second fixed side wrap (47) of the second fixed side member (46) to form a second fluid chamber (72).
- the distal end surface of the second movable side wrap (54) is in sliding contact with a third flat plate portion (49) provided on the second fixed side member (46).
- the distal end surface of the second fixed side wrap (47) is in sliding contact with the front surface of the second flat plate portion (52).
- the second fluid chamber (72) is defined by a second movable wrap (54), a second fixed wrap (47), a second flat plate (52), and a third flat plate (49).
- the second movable side wrap (54) is provided on the front side of the second flat plate portion (52).
- the second movable side wrap (54) is engaged with the second fixed side wrap (47) of the second fixed side member (46) to form a second fluid chamber (72).
- the second fixed side wrap (47) has one end surface in sliding contact with the front surface of the second flat plate portion (52), and the other end surface in sliding contact with the third flat plate portion (49).
- the second fluid chamber (72) is defined by a second movable wrap (54), a second fixed wrap (47), a second flat plate (52), and a third flat plate (49).
- the end face of the first fixed side wrap (42) and the front face of the first flat plate (51) do not necessarily have to directly touch each other. In other words, strictly speaking, even if there is a small gap between the first fixed side wrap (42) and the first flat plate portion (51), the first fixed side wrap (42) 1 If the flat plate (51) looks like they are rubbing against each other. The same applies to the end face of the first fixed wrap (42) and the back face of the second flat plate (52), and the end face of the second fixed wrap (47) and the second flat plate (52). The same applies to the front. Further, in the first invention, the same applies to the end face of the second movable side wrap (54) and the third flat plate portion (49). In the second invention, the end face of the second fixed side wrap (47) is The same applies to the three flat portions (49).
- the first movable side wrap (53) is integrally formed on the front side of the first flat plate portion (51).
- the second flat plate (52) is attached to the first flat plate (51) or the first movable side wrap (53).
- the second movable side wrap (54) is integrally formed on the front side of the second flat plate portion (52).
- the second flat plate portion (52) formed integrally with the second movable side wrap (54) is attached to the first flat plate portion (51) or the first movable side wrap (53). .
- the spiral direction of the first fixed-side wrap (42) and the first movable-side wrap (53) is changed to the second fixed-side wrap (47) and the second movable-side wrap (54).
- the direction of the spiral is opposite.
- the first fixed-side wrap (42) and the first movable-side wrap (53) have a right-handed spiral shape
- the second fixed-side wrap (47) and the second movable-side wrap (54) have a left-handed spiral. It has a spiral shape.
- the fluid is compressed inside one of them and the fluid expands inside the other. That is, for example, if the fluid is sucked into the first fluid chamber (71) and compressed, the fluid sent into the second fluid chamber (72) expands.
- the fluid is sucked into the first fluid chamber (71), compressed, and sent to the second fluid chamber (72). Expands.
- the plurality of introduction openings (66, 68, 69) are formed in the third flat plate portion (49).
- the Each introduction opening (66, 68, 69) is opened and closed by an opening and closing mechanism (85).
- the fluid flows into the second fluid chamber (72) through the introduction openings (66, 68, 69) in the open state.
- the position of each introduction opening (66, 68, 69) in the third flat plate portion (49) is determined by the radial direction of the second fixed side wrap (47) or the second movable side wrap (54). Is different.
- the volume of the second fluid chamber (72) in which each of the introduction openings (66, 68, 69) is open is different from each other for each of the introduction openings (66, 68, 69). Therefore, when the introduction openings (66, 68, 69) through which the fluid passes are changed, the volume of the second fluid chamber (72) at the time of introducing the fluid changes.
- the spiral direction of the first fixed-side wrap (42) and the first movable-side wrap (53) is changed to the second fixed-side wrap (47) and the second movable-side wrap (54).
- the spiral direction is changed to the second fixed-side wrap (47) and the second movable-side wrap (54).
- the spiral direction is changed.
- the first fixed side wrap (42) and the first movable side wrap (53) have a right-handed spiral shape
- the second fixed side wrap (47) and the second movable side wrap (54) will also have a right-handed spiral. It has a spiral shape.
- the fluid is compressed inside both, or the fluid expands inside both. That is, for example, if the fluid is sucked into the first fluid chamber (71) and compressed, the fluid is also sucked into the first fluid chamber (71) and compressed.
- the ratio of the maximum volume to the minimum volume of the first fluid chamber (71) is different from the ratio of the maximum volume to the minimum volume of the second fluid chamber (72). That is, when the scroll fluid machine (10) of the present invention is used as a compressor, the compression ratio in the first fluid chamber (71) is set to a value different from the compression ratio in the second fluid chamber (72). When the scroll type fluid machine (10) is used as an expander, the expansion ratio in the first fluid chamber (71) is set to a value different from the expansion ratio in the second fluid chamber (72).
- the ratio of the maximum volume to the minimum volume of the first fluid chamber (71) is equal to the ratio of the maximum volume to the minimum volume of the second fluid chamber (72). That is, when the scroll fluid machine (10) of the present invention is used as a compressor, the compression ratio in the first fluid chamber (71) is set to the same value as the compression ratio in the second fluid chamber (72). When the scroll type fluid machine (10) is used as an expander, the expansion ratio in the first fluid chamber (71) is set to the same value as the expansion ratio in the second fluid chamber (72). In the eleventh invention, so-called two-stage compression is performed in the scroll-type fluid machine (10).
- the fluid compressed in the first fluid chamber (71) is sucked into the second fluid chamber (72) and further compressed.
- the fluid compressed in the second fluid chamber (72) is sucked into the first fluid chamber (71) and further compressed.
- the engaging portion (64) is provided on the back surface of the first flat plate portion (51) constituting the movable scroll (50), and the engaging portion (64) is engaged with the rotating shaft (20). .
- the first movable side wrap (53) is combined with the first fixed side wrap (42) to form the first fluid chamber (71), while the first movable side wrap (53) is provided in the movable scroll (50).
- a second movable side wrap (54) is arranged on the front side of the flat plate portion (52), and the second movable side wrap (54) is combined with the second fixed side wrap (47) to form a second fluid chamber. (72) is formed.
- the scroll type fluid machine (10) including two sets of the movable side wrap (53, 54) and the fixed side wrap (42, 47) engaged with each other, Similar to a general scroll type fluid machine having only one set of movable side wrap and fixed side wrap, the first movable side wrap (53) can be arranged at the center of the front surface of the first flat plate (51). It becomes possible.
- the innermost diameter of the first movable side wrap (53) and the second movable side wrap (54) in the spiral form is set to be smaller than the case where the wrap is provided on both sides of one flat plate portion. As a result, the minimum volumes of the first fluid chamber (71) and the second fluid chamber (72) can be set small.
- the outermost diameter of the first movable side wrap (53) and the second movable side wrap (54) on the winding end side is reduced.
- the scroll type fluid machine (10) can be downsized.
- the movable scroll (50) is provided with a third flat plate portion (49) for partitioning the movable scroll (50).
- the second flat part (52) and The internal pressure of the second fluid chamber (72) acts on the second flat plate portion (49) and the force acting on the second flat plate portion (52) and the force acting on the third flat plate portion (49).
- they have the same size but opposite directions. Therefore, the force of the fluid in the first fluid chamber (71) on the first flat plate portion (51) and the force on the second flat plate portion (52) cancel each other, and the fluid in the second fluid chamber (72) cancels out.
- the force exerted on the second flat plate portion (52) and the force exerted on the third flat plate portion (49) also cancel each other.
- the force that the movable scroll (50) receives from the fluid in each of the fluid chambers (71, 72) can be made apparently zero, and the action on the movable scroll (50) can be reduced.
- Axial load ie, thrust load
- the friction loss when the orbiting scroll (50) orbits can remarkably be reduced, and the efficiency of the scroll type fluid machine (10) can be improved.
- the first movable side wrap (53) is formed integrally with the first flat plate portion (51) provided with the engagement portion (64) on the back surface. That is, the one in which the first flat plate portion (51) and the first movable side wrap (53) are integrally formed is a movable scroll of a general scroll type fluid machine having only one set of movable side and fixed side wraps. It has almost the same shape as. Therefore, when manufacturing the first flat plate portion (51) and the first movable side wrap (53) which are integrally formed, the movable scroll of a general scroll type fluid machine is added. Facilities and methods to do this are available. Therefore, according to the present invention, it is possible to avoid an increase in the processing cost of the first flat plate portion (51) and the first movable side wrap (53), and to suppress an increase in the manufacturing cost of the scroll fluid machine (10). .
- the first movable side wrap (53) is integrally formed on the front side of the first flat plate portion (51), and the second movable side wrap (53) is integrally formed on the front side of the second flat plate portion (52).
- the wrap (54) is integrally formed. Therefore, as compared with the above-mentioned conventional scroll type fluid machine in which the movable side wraps are formed on both surfaces of one flat plate portion, the working process of the movable scroll (50) can be simplified, and the production of the scroll type fluid machine (10) can be simplified. Costs can be reduced.
- the fluid can be expanded in one of the fluid chambers (71, 72), and the internal energy of the fluid can be recovered as rotational power, and the recovered power can be used as the other power. It can be used for compressing fluid in the fluid chambers (71, 72).
- the fluid when the fluid is compressed by the scroll-type fluid machine (10), the fluid is supplied from the outside. Power can be reduced, and the efficiency of the scroll fluid machine (10) can be improved.
- the third flat plate portion (49) is provided with the plurality of introduction openings (66, 68, 69), and each introduction opening (66, 68, 69) is opened and closed by the opening / closing mechanism (85). ) Can be opened and closed. Therefore, the volume of the second fluid chamber (72) at the time of introducing the fluid from the introduction openings (66, 68, 69) can be changed. That is, the substantial minimum volume of the second fluid chamber (72) can be changed. Therefore, according to the present invention, the displacement volume of the second fluid chamber (72) can be made variable, and the usability of the scroll fluid machine (10) can be improved.
- the fluid is compressed or expanded in both the first fluid chamber (71) and the second fluid chamber (72). Therefore, the capacity of the scroll-type fluid machine (10) can be adjusted by switching the fluid chambers (71, 72) into which the fluid is introduced, or the fluid compressed in one fluid chamber can be further changed in the other fluid chamber.
- the use of the scroll type fluid machine (10) can be expanded, for example, two-stage compression becomes possible.
- the scroll fluid machine (10) performs two-stage compression. Therefore, according to the present invention, the movable scroll (50) can be reduced in size, and the compression ratio of the scroll type fluid machine (10) as a whole can be set to a large value by performing two-stage compression.
- FIG. 1 is a schematic sectional view showing the overall configuration of a scroll fluid machine according to Embodiment 1.
- FIG. 2 is an enlarged sectional view showing a main part of the scroll fluid machine according to Embodiment 1.
- FIG. 3 is a sectional view showing a first fixed side member of the fixed scroll according to the first embodiment.
- FIG. 4 is a sectional view showing a movable scroll according to the first embodiment.
- FIG. 5 is a plan view showing a first fixed-side member and a movable scroll according to the first embodiment.
- FIG. 6 is a schematic configuration diagram of a refrigerant circuit including the scroll-type fluid machine of Embodiment 1.
- FIG. 7 is a schematic configuration diagram of a scroll type fluid machine of Embodiment 2 and a refrigerant circuit including the same.
- FIG. 8 is a schematic configuration diagram of a scroll type fluid machine of Embodiment 3 and a refrigerant circuit including the same.
- FIG. 9 is an outline of a scroll type fluid machine of a modified example of Embodiment 3 and a refrigerant circuit including the same. It is a schematic block diagram.
- FIG. 10 is a schematic configuration diagram of a scroll type fluid machine of a modified example of Embodiment 3 and a refrigerant circuit including the same.
- FIG. 11 is a schematic configuration diagram of a scroll type fluid machine of Embodiment 4 and a refrigerant circuit including the same.
- FIG. 12 is a schematic configuration diagram of a scroll type fluid machine of Embodiment 5 and a refrigerant circuit including the same.
- FIG. 13 is a schematic configuration diagram of a scroll type fluid machine of a modified example of Embodiment 5 and a refrigerant circuit including the same.
- FIG. 14 is a schematic sectional view showing the overall configuration of a scroll fluid machine according to Embodiment 6.
- FIG. 15 is an enlarged sectional view showing a main part of a scroll fluid machine according to a seventh embodiment.
- Embodiment 1 of the present invention will be described.
- the scroll-type fluid machine (10) includes a casing (11) formed in a vertically long cylindrical closed container shape. Inside the casing (11), a main body mechanism (30), an electric motor (16), and a lower bearing (19) are arranged in order from top to bottom. A drive shaft (20) extending vertically is provided as a rotation shaft inside the casing (11).
- the inside of the casing (11) is vertically partitioned by a housing (33) of the main body mechanism (30). Inside the casing (11), the space above the housing (33) becomes the low-pressure chamber (12), and the space below it becomes the high-pressure chamber (13).
- the high-pressure chamber (13) houses an electric motor (16) and a lower bearing (19).
- the electric motor (16) includes a stator (17) and a rotor (18).
- the stator (17) is fixed to the body of the casing (11).
- the rotor (18) is located at the vertical center of the drive shaft (20). It is fixed.
- the lower bearing (19) is fixed to the body of the casing (11).
- the lower bearing (19) rotatably supports the lower end of the drive shaft (20).
- the casing (11) is provided with a tubular discharge port (74).
- One end of the discharge port (74) is open to a space above the electric motor (16) in the high-pressure chamber (13).
- the housing (33) of the main body mechanism (30) is provided with a main bearing (34) penetrating it vertically.
- the drive shaft (20) passes through the main bearing (34), and is supported by the main bearing (34) in a rotating manner.
- an upper end protruding above the housing (33) forms an eccentric part (21).
- the eccentric part (21) is eccentric with respect to the center axis of the drive shaft (20).
- a balance weight (25) is attached to the drive shaft (20) between the housing (33) and the stator (17).
- an oil supply passage is formed in the drive shaft (20).
- the refrigerating machine oil collected at the bottom of the housing (33) is sucked up from the lower end of the drive shaft (20) by the action of the centrifugal pump, and is supplied to each part through an oil supply passage.
- a discharge passage (22) is formed in the drive shaft (20). This discharge passage (22) will be described later.
- the low-pressure chamber (12) houses a fixed scroll (40) and a movable scroll (50) of the main body mechanism (30).
- a first volume change section (31) constituting the compressor and a second volume change section (32) constituting the expander are formed in the main body mechanism (30).
- the low pressure chamber (12) contains an onore dam ring (39).
- the fixed scroll member (40) includes a first fixed side member (41) and a second fixed side member (46).
- the first fixed side member (41) and the second fixed side member (46) constituting the fixed scroll (40) are fixed to the housing (33).
- the first fixed side member (41) includes a first fixed side wrap (42) and a first outer peripheral portion (43).
- FIG. 3 shows only the first fixed side member (41) in the AA section of FIG.
- the first fixed side wrap (42) is formed in a spiral wall shape having a constant height.
- the first outer peripheral portion (43) is formed in a thick ring shape surrounding the first fixed side wrap (42), and is formed integrally with the first fixed side wrap (42). I have.
- the first fixed side member (41) The first fixed side wrap (42) protrudes in a cantilever shape from the inner peripheral surface of the first outer peripheral portion (43).
- the first outer peripheral portion (43) is formed with three through holes (44) and three bolt holes (45). The first fixed side member (41) is fastened and fixed to the housing (33) by a bolt passed through the bolt hole (45).
- the suction check valve (35) includes a valve body (36) and a coil spring (37).
- the valve element (36) is formed in a cap shape and is installed so as to close the lower end of the suction port (73). The valve body (36) is pressed against the lower end of the suction port (73) by a coil spring (37).
- the second fixed side member (46) includes a second fixed side wrap (47), a second outer peripheral portion (48), and a third flat plate portion (49).
- the entire shape of the second fixed side member (46) is a disk having a smaller thickness and a smaller diameter than the first fixed side member (41).
- the third flat plate portion (49) is formed in a disk shape, and is arranged at an upper portion of the second fixed side member (46).
- the second outer peripheral portion (48) is formed integrally with the third flat plate portion (49), and extends downward from the third flat plate portion (49).
- the shape of the second outer peripheral portion (48) is a ring-shaped wall having the same outer diameter as the third flat plate portion (49).
- the second fixed-side wrap (47) is disposed inside the second outer peripheral portion (48), and is formed integrally with the third flat plate portion (49). .
- the second fixed side wrap (47) is formed in a spiral wall shape lower than the first fixed side wrap (42), and extends downward from the lower surface of the third flat plate portion (49).
- the spiral direction of the second fixed wrap (47) is opposite to the spiral direction of the first fixed wrap (42). That is, while the first fixed side wrap (42) is formed in a right-handed spiral wall shape (see FIG. 3), the second fixed-side wrap (47) is formed in a left-handed spiral wall shape. Let's do it.
- One end of a tubular outflow port (76) is inserted into the second fixed side member (46).
- the outflow port (76) is provided through the upper end of the casing (11).
- An inflow port (66) is formed at the center of the third flat plate portion (49) of the second fixed member (46).
- the inflow port (66) is open near the end on the winding start side of the second fixed side wrap (47), and penetrates the third flat plate portion (49).
- One end of a tubular inflow port (75) is inserted into the inflow port (66).
- the inflow port (75) is provided through the upper end of the casing (11).
- the movable scroll (50) includes a first flat plate portion (51), a first movable side wrap (53), and a second flat plate portion (51).
- the first movable side wrap (53) is formed integrally with the first flat plate portion (51).
- the second movable side wrap (54) is formed integrally with the second flat plate portion (52).
- the first movable wrap (50) is formed integrally with the first movable wrap (50).
- Three pillar members (61) are erected on the upper surface of the first flat plate portion (51) integral with the 53), and the second flat plate portion (52) integral with the second movable side wrap (54) is provided on the pillar member (61). ) Is placed on top.
- the orbiting scroll (50) the stacked first flat plate portion (51), the support member (61), and the second flat plate portion (52) are fastened by bolts (62).
- FIG. 4 shows only the orbiting scroll (50) in the AA section of FIG.
- FIG. 5 illustrates the first fixed-side member (41) and the movable scroll (50) in the cross section AA in FIG.
- the first flat plate portion (51) is formed in a substantially circular flat plate shape.
- the front surface (the upper surface in FIG. 2) of the first flat plate portion (51) is in sliding contact with the lower end surface of the first fixed side wrap (42).
- the first flat plate portion (51) is formed with three radially swelled portions, and one support member (61) is provided on each of the portions.
- the support member (61) is a somewhat thick tubular member, and is formed separately from the first flat plate portion (51).
- the first movable side wrap (53) is formed in a spiral wall shape having a constant height, and stands upright on the front side (the upper side in FIG. 2) of the first flat portion.
- the first movable side wrap (53) is engaged with the first fixed side wrap (42) of the first fixed side member (41) (see FIG. 5). Then, the side surface of the first movable side wrap (53) is in sliding contact with the side surface of the first fixed side wrap (42).
- the second flat plate portion (52) is formed in a flat plate shape having substantially the same shape as the first flat plate portion (51).
- the rear surface (lower surface in FIG. 2) of the second flat plate portion (52) is in sliding contact with the upper end surface of the first fixed side wrap (42), and the front surface (upper surface in FIG. 2) is in contact with the second fixed side wrap (42). (47) Sliding contact with the lower end surface.
- a second movable side wrap (54) is provided upright on the front side (the upper side in FIG. 2) of the second flat plate portion (52).
- the spiral direction of the second movable wrap (54) is opposite to the spiral direction of the first movable wrap (53). That is, while the first movable side wrap (53) is formed in a right-handed spiral wall shape (see FIG. 4), the second movable side wrap (54) is formed in a left-handed spiral wall shape. I have.
- the first fixed side wrap (42), the first movable side wrap (53), the first flat plate portion (51), and the second flat plate portion (52) form a plurality of first wraps.
- a fluid chamber (71) is formed.
- the second fixed side wrap (47), the second movable side wrap (54), the second flat plate portion (52), and the third flat plate portion (49) form a plurality of A second fluid chamber (72) is formed.
- the second fixed side member (46) forms a second volume change portion (32).
- the first flat plate portion (51) of the orbiting scroll (50) has a discharge port (63) at the center thereof.
- the discharge port (63) is opened near the end on the winding start side of the first movable wrap (53) (see FIG. 4), and penetrates the first flat plate portion (51).
- a bearing portion (64) is formed on the first flat plate portion (51).
- the bearing portion (64) is formed in a substantially cylindrical shape, and protrudes from the rear surface side (the lower surface side in FIG. 2) of the first flat plate portion (51).
- a flange portion (65) is formed at the lower end of the bearing portion (64).
- a seal ring (38) is provided between the lower surface of the flange (65) of the bearing (64) and the housing (33). Inside the seal ring (38), high-pressure refrigerating machine oil is supplied through an oil supply passage of the drive shaft (20). When high-pressure refrigerating machine oil is sent into the inside of the seal ring (38), hydraulic pressure acts on the bottom surface of the flange (65), and the movable scroll (50) is pushed upward.
- the eccentric part (21) of the drive shaft (20) is inserted into the bearing part (64) of the first flat plate part (51).
- the inlet end of the discharge passage (22) is open at the upper end surface of the eccentric part (21).
- the discharge passage (22) has a slightly large diameter near the inlet end, and has a cylindrical seal (23) and a coil spring (24) installed therein.
- the cylindrical seal (23) is formed in a tubular shape whose inner diameter is slightly larger than the diameter of the discharge port (63), and is pressed against the back surface of the first flat plate portion (51) by the coil spring (24). .
- the outlet end of the discharge passage (22) opens between the stator (17) and the lower bearing (19) on the side surface of the drive shaft (20) (see FIG. 1).
- An Oldham ring (39) is interposed between the first flat plate portion (51) and the housing (33).
- the Oldham ring (39) includes a pair of keys for engaging the first flat plate (51) and a pair of keys for engaging the housing (33). This constitutes the anti-rotation mechanism.
- the inside of the seal ring (38) has a high pressure, and the outside has a low pressure (suction pressure). As a result, the refrigerating machine oil flows out from the inside of the seal ring (38) to the outside, and the leaked refrigerating machine oil is supplied to the key portion of the Oldham ring (39).
- the scroll fluid machine (10) of the present embodiment is provided in a refrigerant circuit (90) of a refrigeration system.
- the refrigerant circulates to perform a vapor compression refrigeration cycle.
- the scroll-type fluid machine (10) has a discharge port (74) connected to the condenser.
- the first volume change section (31) of the scroll fluid machine (10) constitutes a compressor that compresses the refrigerant in the refrigerant circuit (90).
- the second volume change portion (32) is an expander that recovers power by expanding the refrigerant in the refrigerant circuit (90), and constitutes a refrigerant expansion mechanism together with the expansion valve (92). I have.
- rotational power generated by the electric motor (16) is transmitted to the orbiting scroll (50) by the drive shaft (20).
- the orbiting scroll (50) engaged with the eccentric part (21) of the drive shaft (20) is guided by the on-reed dam ring (39), and does not rotate without rotating. Perform only rolling motion.
- the high-pressure refrigerant discharged from the discharge port (74) is sent to the condenser (91) and condensed.
- the refrigerant condensed in the condenser (91) flows into the inlet port (75) after being somewhat depressurized when passing through the expansion valve (92).
- the expansion valve (92) may be set to the fully open state and the refrigerant condensed in the condenser (91) may be sent to the inflow port (75) with almost no pressure reduction.
- the refrigerant flowing into the inflow port (75) is introduced into the second fluid chamber (72) and expands.
- the second movable wrap (54) moves, and as the second movable wrap (54) moves, the volume of the second fluid chamber (72) increases. growing. That is, a part of the internal energy of the refrigerant introduced into the second fluid chamber (72) is converted into power for moving the second movable wrap (54).
- the orbiting scroll (50) is driven by both the driving force generated by the electric motor (16) and the power recovered by the refrigerant power in the second volume changing section (32).
- the bearing (64) is provided on the back surface of the first flat plate (51) constituting the orbiting scroll (50), and the end of the drive shaft (20) is connected to the bearing (64).
- the drive shaft (20) is engaged with the orbiting scroll (50).
- the first movable side wrap (53) is combined with the first fixed side wrap (42) to form the first fluid chamber (71), while the first movable side wrap (53) is provided in the movable scroll (50).
- a second movable side wrap (54) is arranged on the front side of the second flat plate portion (52), and this second movable side wrap (54) is combined with the second fixed side wrap (47) to form a second fluid.
- a chamber (72) is formed.
- the scroll-type fluid machine (10) including two sets of the movable side wrap (53, 54) and the fixed side wrap (42, 47) which are engaged with each other
- the first movable side wrap (53) should be placed in the center of the front surface of the first flat plate part (51), as in a general scroll type fluid machine that has only one set of movable side wrap and fixed side wrap. Becomes possible.
- the innermost diameter of the first movable side wrap (53) and the second movable side wrap (54) in the spiral shape is smaller than that of the case where the wrap is provided on both sides of one flat plate portion.
- the minimum volumes of the first fluid chamber (71) and the second fluid chamber (72) can be set small.
- the diameter can be set small, and the movable scroll (50) can be downsized.
- the scuronole type fluid machine (10) can be downsized.
- the first movable side wrap (53) is formed integrally with the first flat plate portion (51) having the bearing portion (64) projecting from the rear surface. That is, the first flat plate portion (51) and the first movable side wrap (
- the first movable side wrap (53) is integrally formed on the front side of the first flat plate portion (51), and the second movable side wrap is formed on the front side of the second flat plate portion (52).
- (54) is integrally formed. Therefore, compared with the above-mentioned conventional scroll type fluid machine in which the movable side wrap is formed on both surfaces of one flat plate portion, the working process of the movable scroll (50) can be simplified, and the scroll type fluid machine ( 10) Manufacturing cost can be reduced.
- the fluid can be expanded in one of the fluid chambers (71, 72), and the internal energy of the fluid can be recovered as rotational power, and the recovered power can be used for the other fluid chamber (71, 72). 71, 72).
- the scroll-type fluid When the fluid is compressed by the machine (10), the power to be supplied from the outside can be reduced, and the efficiency of the scroll type fluid machine (10) can be improved.
- the first volume change section (31) forms a compressor, and the second volume change section (32) formed above the first volume change section (31) expands. Make up the machine. Therefore, according to the present embodiment, the lubrication between the Oldham ring (39), the housing (33), and the first flat plate portion (51) can be reliably performed, and the reliability of the scroll fluid machine (10) can be improved. The ability to secure nature.
- the scroll type fluid machine (10) of the present embodiment uses the first volume changing section (31) as an expander.
- the liquid refrigerant introduced into the first fluid chamber (71) expands to a gas-liquid two-phase state, and the refrigerant in the gas-liquid two-phase state is sent out from the first fluid chamber (71).
- the scroll-type fluid machine (10) has a structure in which the refrigerant sent from the first fluid chamber (71) flows into the low-pressure chamber (12) (see FIG. 2).
- the liquid refrigerant discharged from the first fluid chamber (71) also enters the vicinity of the on-dam ring (39), and lubrication between the Oldham ring (39) and the first flat plate portion (51) or the like does not occur. There is a possibility of falling into good.
- the second volume changing section (32) is used as an expander. Then, the inflow port (75) and the outflow port (76) are connected to the second fixed side member (46), and the refrigerant passing through the second fluid chamber (72) does not flow into the low pressure chamber (12). It has a structure. Further, the refrigerant sucked into the first fluid chamber (71) of the first volume changing portion (31) constituting the compressor is completely a gas refrigerant in a normal operation state. That is, only the gas refrigerant flows into the vicinity of the onore dam ring (39). For this reason, an oil film is secured between the onore dam ring (39) and the first flat plate portion (51) and the like, and lubrication is appropriately performed.
- the refrigerating machine oil supplied to the vicinity of the Oldham ring (39) has a part thereof in the first fluid chamber.
- the refrigerating machine oil is discharged from the first fluid chamber (71) together with the discharge gas, though mixed into the refrigerant sucked into the (71).
- the refrigerating machine oil that has flowed out of the first fluid chamber (71) exists in the gas refrigerant, not in the liquid refrigerant, as oil droplets. For this reason, the discharge gas and the refrigerating machine oil can be easily separated, and the storage amount of the refrigerating machine oil in the casing (11) can be secured.
- the second volume changing portion (32) when used as an expander, a general scroll Even when a lubrication method similar to that of the wheel compressor is employed, it is possible to reliably perform lubrication between the onore dam ring (39), the housing (33), and the first flat plate portion (51). Therefore, according to the present embodiment, the reliability of the scroll fluid machine (10) can be sufficiently ensured.
- Embodiment 2 of the present invention will be described. This embodiment is obtained by changing the configuration of the main body mechanism (30) in the first embodiment.
- the differences of the scroll type fluid machine (10) of the present embodiment from the above-described first embodiment will be described.
- the first volume changing section (31) forms a compressor
- the second volume changing section (31) 32) constitutes the expander.
- the capacity of the expander constituted by the second volume changing section (32) is variable. Accordingly, in the refrigerant circuit (90) of the present embodiment, the expansion valve (92) is omitted.
- three inflow ports (66, 68, 69) serving as introduction openings are formed in the third flat plate portion (49) of the second fixed side member (46). .
- These three inlets (66, 68, 69) are arranged at different positions in the radial direction of the second fixed side wrap (47), and penetrate the third flat plate portion (49).
- the first inflow port (66) is open near the end on the winding start side of the second fixed side wrap (47).
- the second inlet (68) and the third inlet (69) are formed at positions radially away from the first inlet (66) on the second fixed side wrap (47).
- the distance between the third inlet (69) and the first inlet (66) is longer than the distance between the second inlet (68) and the first inlet (66). Note that these three inlets (66, 68, 69) need not be arranged in a straight line.
- Each of the inflow ports (66, 68, 69) opens at the lower surface of the third flat plate portion (49), and communicates with the second fluid chamber (72). Further, as described above, the respective inlets (66, 68, 69) are formed at different positions in the radial direction of the second fixed side wrap (47). Therefore, the second fluid chambers (72) communicating with the respective inlets (66, 68, 69) have different volumes from each other.
- the inflow port (75) of the present embodiment is branched into three at the terminal side. Inflow port Each end of (75) has a first end at the first inlet (66), a second end at the second inlet (68), and a third end at the third inlet (68). 69). On the other hand, the starting end of the inflow port (75) is connected to the condenser (91) via the piping of the refrigerant circuit (90).
- the inflow port (75) is provided with a four-way valve (85).
- the four-way valve (85) is arranged at a branch point of the inflow port (75).
- the four-way valve (85) constitutes an opening / closing mechanism, and opens and closes the first, second, and third inlets (66, 67, 68) individually. Of these three inlets (66, 67, 68), the one set in the open state by the four-way valve (85) communicates with the start end of the inflow port (75). Then, the refrigerant condensed in the condenser (91) flows into the second fluid chamber (72) through the inlets (66, 67, 68) set in the open state.
- the inflow ports (66, 68, 69) through which the refrigerant passes toward the second fluid chamber (72) are changed, and the refrigerant flows from the condenser (91).
- the volume of the second fluid chamber (72) at the time when the refrigerant is introduced changes.
- the volume of the second fluid chamber (72) is the smallest when the refrigerant is introduced through the first inlet (66). It increases in the order in which the refrigerant is introduced through the inlet (69). In other words, the closed volume of the second fluid chamber (72) in the second volume changing section (32) increases in order.
- the capacity of the expander constituted by the second volume change portion (32) is minimum when introducing the refrigerant through the first inlet (66), and is minimum when introducing the refrigerant through the second inlet (68).
- the size gradually increases in the order in which the refrigerant is introduced through the third inlet (69).
- the second inlet (68) When the second inlet (68) is set to the open state, it is desirable to set the first inlet (66) to the open state at the same time. If the first inlet (66) is set in the open state, an abnormal decrease in the internal pressure in the second fluid chamber (72) closer to the center than the second inlet (68) can be prevented.
- the third inlet (69) when the third inlet (69) is set to the open state, it is preferable to set the first inlet (66) and the second inlet (68) to the open state at the same time. If the first inlet (66) and the second inlet (68) are set to the open state, an abnormal decrease in the internal pressure in the second fluid chamber (72) closer to the center than the third inlet (69) is prevented. Can be prevented.
- the capacity of the expander constituted by the second volume changing portion (32) is variable. Therefore, regardless of the operating conditions of the refrigeration cycle, all of the refrigerant condensed in the condenser (91) can be introduced into the second fluid chamber (72) without decompression, and the power of the refrigerant can be reliably recovered. Power to reduce the power consumption of the motor (16).
- the capacity of the compressor constituted by the first volume changing section (31), which is not limited to the capacity of the expander constituted by the second volume changing section (32), may also be variable.
- the capacity of the first volume changing section (31) can be changed.
- a bypass passage is provided directly connecting the discharge port (74) and the suction port (73) of the scroll type fluid machine (10), and is directly returned from the discharge port (74) to the suction port (73) through the bypass passage.
- the capacity of the first volume changing section (31) may be changed by adjusting the flow rate of the refrigerant.
- an expansion valve is provided between the evaporator (93) and the suction port (73) of the scroll fluid machine (10), and the degree of opening of the expansion valve is adjusted to control the refrigerant flowing into the suction port (73).
- the capacity of the first volume changing portion (31) may be changed by changing the density of the first volume changing portion.
- Embodiment 3 of the present invention will be described. This embodiment is obtained by changing the configuration of the main body mechanism (30) in the first embodiment.
- the scroll type of the present embodiment Regarding the fluid machine (10), differences from the first embodiment will be described.
- the second volume changing section (32) forms a compressor. That is, in the main body mechanism (30), both the first volume change section (31) and the second volume change section (32) constitute a compressor.
- the spiral direction of the second fixed wrap (47) is the same as the spiral direction of the first fixed wrap (42). That is, similarly to the first fixed side wrap (42) formed in a right-handed spiral wall shape (see FIG. 3), the second fixed side wrap (47) is also formed in a right-handed spiral wall shape.
- the compression ratio in the second volume changing section (32) is larger than the compression ratio in the first volume changing section (31). That is, the ratio of the maximum volume to the minimum volume in the second fluid chamber (72) is set to a value larger than the ratio of the maximum volume to the minimum volume in the first fluid chamber (71).
- the compression ratio in the second volume change section (32) is set to be larger than the compression ratio in the first volume change section (31).
- the compression ratio in the second volume change section (32) may be set smaller than the compression ratio in the first volume change section (31).
- the suction port (73) of the first embodiment forms a first suction port (73), and the discharge port (74) of the first embodiment
- the first discharge port (74) is configured.
- the discharge port (63) of the first embodiment forms a first discharge port (63), and the inflow port (66) of the first embodiment forms a second discharge port (67). are doing.
- the outflow port (76) of the first embodiment forms a second suction port (77), and the inflow port (75) of the first embodiment corresponds to the second discharge port (78).
- the refrigerant circuit (90) provided with the scroll type fluid machine (10) of the present embodiment includes an expansion valve.
- the refrigerant evaporation temperature in the second evaporator (96) is set lower than the refrigerant evaporation temperature in the first evaporator (93).
- the first discharge port (74) and the second discharge port (78) of the scroll fluid machine (10) are connected to one end of the condenser (91).
- the other end of the condenser (91) is connected to the first expansion valve (92) and the second expansion valve (95).
- the first evaporator (93) has one end Is connected to the first expansion valve (92) and to the first suction port (73) of the other end force scroll type fluid machine (10).
- the second evaporator (96) has one end connected to the second expansion valve (95), and the other end connected to the second suction port (77) of the S scroll type fluid machine (10).
- the refrigerant compressed in the first volume change section (31) is discharged from the first discharge port (74) and compressed in the second volume change section (32).
- the refrigerant is discharged from the second discharge port (78).
- Refrigerant having the same pressure is discharged from the first discharge port (74) and the second discharge port (78).
- the refrigerant discharged from the first discharge port (74) and the second discharge port (78) is condensed in the condenser (91), and then flows out of the condenser (91) and is divided into two parts.
- One of the divided refrigerants is depressurized by the first expansion valve (92), and then evaporates in the first evaporator (93), and is evaporated through the first suction port (73) to the first volume change section (31). Is sucked into the first fluid chamber (71).
- the remaining divided refrigerant is decompressed by the second expansion valve (95), then evaporated by the second evaporator (96), and is evaporated through the second suction port (77) to the second volume change section (32). Inhaled into the second fluid chamber (72).
- the opening of the second expansion valve (95) is set smaller than the opening of the first expansion valve (92), and the refrigerant evaporation pressure in the second evaporator (96) is reduced.
- the pressure is set lower than the refrigerant evaporation pressure in the first evaporator (93).
- one scroll-type fluid machine (10 ) Alone can compress the refrigerant, and the configuration of the refrigeration apparatus can be simplified.
- the first movable wrap (53) can be arranged at the center of the front surface of the first flat plate (51). .
- the outermost diameter can be set small, and the movable scroll (50) can be downsized.
- the scroll type fluid machine (10) of the present embodiment may be provided in a refrigerant circuit (90) having the following configuration.
- the refrigerant circuit (90) of the present modification is also provided with two expansion valves (92, 95) and two evaporators (93, 96). Also, the point that the refrigerant evaporation temperature in the second evaporator (96) is set lower than the refrigerant evaporation temperature in the first evaporator (93) is the same as that shown in FIG.
- the first volume change section (31) constitutes the compressor on the low stage side
- the second volume change section (32) constitutes the compressor on the high stage side. are doing.
- the compression ratios of the first volume change section (31) and the second volume change section (32) are different. May be set.
- the first discharge port (74) of the scroll fluid machine (10) is connected to one end of the condenser (91).
- the other end of the condenser (91) is branched and connected to the first expansion valve (92) and the second expansion valve (95).
- One end of the first evaporator (93) is connected to the first expansion valve (92), and the other end is connected to the first suction port (73) of the S scroll type fluid machine (10).
- the second evaporator (96) has one end connected to the second expansion valve (95) and the other end connected to the second suction port (77) of the scroll-type fluid machine (10).
- the second discharge port (78) of the scroll type fluid machine (10) is connected to a suction pipe between the first evaporator (93) and the first suction port (73).
- the refrigerant compressed in the first volume change section (31) is discharged from the first discharge port (74) and compressed in the second volume change section (32).
- the refrigerant is discharged from the second discharge port (78).
- a refrigerant having a higher pressure than the second discharge port (78) is discharged from the first discharge port (74).
- the refrigerant discharged from the first discharge port (74) is condensed in the condenser (91), and then flows out of the condenser (91) and is divided into two parts.
- One of the divided refrigerants is depressurized by the first expansion valve (92), then evaporates in the first evaporator (93), and joins with the refrigerant discharged from the second discharge port (78). Then, it is sucked into the first fluid chamber (71) of the first volume changing portion (31) through the first suction port (73). Meanwhile, under the condenser (91) The remaining refrigerant diverted by the flow is depressurized by the second expansion valve (95) and then evaporated by the second evaporator (96), and is evaporated through the second suction port (77) to the second volume change section (32). Inhaled into the second fluid chamber (72).
- the opening of the second expansion valve (95) is set smaller than the opening of the first expansion valve (92), and the refrigerant evaporation pressure in the second evaporator (96) is reduced. It is set lower than the refrigerant evaporation pressure in the first evaporator (93).
- the refrigerant discharged from the second discharge port (78) is drawn into the first volume changing section (31) from the first suction port (73), and is compressed in two stages.
- the refrigerant circuit (90) shown in FIG. 8 when the difference in refrigerant evaporation temperature between the first evaporator (93) and the second evaporator (96) is large (for example, this refrigerant circuit ( 90) is applied to refrigeration and freezing, or air conditioning and freezing, etc.), the required compression ratio of the second volume change section (32) increases, and the amount of refrigerant leakage increases or the discharge temperature becomes too high. Or
- the refrigerant evaporated in the second evaporator (96) is cooled by the second volume changing section (32) and the first volume changing section (31). ) And two-stage compression.
- the second volume change section (32) 32) does not need to be operated at an excessively large compression ratio, and the amount of refrigerant leakage in the second volume change section (32) can be suppressed.
- the temperature of the refrigerant discharged from the second volume change section (32) can be kept low, and the refrigerant itself and lubricating oil caused by the temperature of the refrigerant discharged from the second volume change section (32) becoming too high. Degradation can be avoided.
- the refrigerant evaporating in the first evaporator (93) is changed to the refrigerant evaporating in the second evaporator (96) in the first volume changing section (31), as shown in FIG.
- the second volume change section (96) is changed to the refrigerant evaporating in the first volume changing section (31), as shown in FIG.
- a refrigerant circuit (90) may be configured as shown in FIG. 10 so that the operation possible in the refrigerant circuit shown in FIG. 8 and the operation possible in the refrigerant circuit shown in FIG. 9 can be switched.
- This figure 10 In the refrigerant circuit (90) shown in FIG. 9, a three-way switching valve (97) is added to the refrigerant circuit (90) shown in FIG.
- the three-way switching valve (97) is provided in a discharge pipe connected to the second discharge port (78). In this discharge pipe, the three-way switching valve (97) is positioned closer to the second discharge port (78) than the position where the suction pipe between the first evaporator (93) and the first suction port (73) is connected. It is provided in.
- the three-way switching valve (97) is connected to a discharge pipe connected to the first discharge port (74).
- the three-way switching valve (97) is capable of switching the destination of the refrigerant flowing from the second discharge port (78) side to the first suction port (73) side and the first discharge port (74). In this way, it is possible to switch between the operation that can be performed by the refrigerant circuit shown in FIG. 8 and the operation that can be performed by the refrigerant circuit shown in FIG.
- Embodiment 4 of the present invention will be described.
- the scroll type fluid machine (10) of the present embodiment has the same configuration as that of the third embodiment. That is, in the scroll type fluid machine (10) of the present embodiment, both the first volume change section (31) and the second volume change section (32) constitute a compressor, and the second volume change section (32) The compression ratio in 32) is larger than the compression ratio in the first volume change section (31).
- the refrigerant circuit (90) provided with the scroll type fluid machine (10) of the present embodiment includes a condenser (91, 94) and an expansion valve (92, 95). Two are provided.
- the refrigerant condensing temperature in the second condenser (94) is set higher than the refrigerant condensing temperature in the first condenser (91).
- the first condenser (91) is connected at one end to the first discharge port (74) of the force scroll type fluid machine (10), and at the other end to the first expansion valve (92). ) Is connected to one end.
- the second condenser (94) has one end connected to the second discharge port (78) of the S scroll type fluid machine (10) and the other end connected to one end of the second expansion valve (95).
- One end of each of the first expansion valve (92) and the second expansion valve (95) is connected to one end of the evaporator (93).
- the other end of the evaporator (93) is connected to the first suction port (73) and the second suction port (77) of the scroll type fluid machine (10).
- the refrigerant compressed in the first volume changing section (31) is discharged to the first discharge port.
- the refrigerant discharged from the outlet port (74) and compressed by the second volume changing portion (32) is discharged from the second discharge port (78).
- the pressure of the refrigerant discharged from the second discharge port (78) is higher than the pressure of the refrigerant discharged from the first discharge port (74).
- the refrigerant discharged from the first discharge port (74) is condensed in the first condenser (91) and then decompressed in the first expansion valve (92).
- the refrigerant discharged from the second discharge port (78) is condensed by the second condenser (94) and then decompressed by the second expansion valve (95).
- one scroll-type fluid machine (10 ) Alone can compress the refrigerant, and the configuration of the refrigeration apparatus can be simplified.
- Embodiment 5 of the present invention will be described.
- the scroll type fluid machine (10) of the present embodiment has the same configuration as that of the third embodiment. That is, in the scroll-type fluid machine (10) of the present embodiment, both the first volume change section (31) and the second volume change section (32) constitute a compressor. However, in this scroll type fluid machine (10), the compression ratios of the first volume change section (31) and the second volume change section (32) do not need to be different. May be set.
- the refrigerant circuit (90) provided with the scroll fluid machine (10) of the present embodiment includes a condenser (91), an expansion valve (92), and an evaporator (93). ), An intermediate heat exchanger (97) is provided.
- a two-stage compression refrigeration cycle is performed.
- the first volume change section (31) forms a low-stage compressor
- the second volume change section (32) forms a high-stage compressor.
- the first discharge port (74) is connected to one end of the intermediate heat exchanger (97), and the second suction port (77) is connected to the intermediate port. Others heat exchangers (97) Connected to the end.
- the second discharge port (78) of the scroll fluid machine (10) is connected to one end of the condenser (91).
- the other end of the condenser (91) is connected to one end of the evaporator (93) via an expansion valve (92).
- the other end of the evaporator (93) is connected to a first suction port (73) of the scroll type fluid machine (10).
- the scroll fluid machine (10) sucks the refrigerant evaporated by the evaporator (93) from the first suction port (73).
- the refrigerant sucked into the first suction port (73) is sucked into the first fluid chamber (71) of the first volume changing section (31) and is compressed.
- the refrigerant compressed in the first volume change section (31) is discharged from the first discharge port (74), cooled by the intermediate heat exchanger (97), and then cooled by the second suction port (77). It is sucked again into the fluid machine (10).
- the refrigerant sucked into the second suction port (77) is sucked into the second fluid chamber (72) of the second volume change part (32), is further compressed.
- the refrigerant compressed in the second volume changing section (32) is discharged from the second discharge port (78) and condensed in the condenser (91). Thereafter, the refrigerant is decompressed by the expansion valve (92), flows into the evaporator (93), and evaporates.
- the scroll type fluid machine (10) including two sets of the movable side wrap (53, 54) and the fixed side wrap (42, 47) engaged with each other also has the movable side wrap (53, 54).
- the first movable wrap (53) can be arranged at the center of the front surface of the first flat plate (51). .
- the winding end side of the first movable side wrap (53) and the second movable side wrap (54) is formed.
- the outermost diameter can be set small, and the movable scroll (50) can be downsized.
- the scroll type fluid machine (10) of the present embodiment may be provided in a refrigerant circuit (90) having the following configuration.
- the intermediate heat exchanger (97) is omitted.
- a second expansion valve (95) and a gas-liquid separator (98) are provided.
- the enthalpy of the refrigerant drawn into the second volume change section (32) is reduced by heat exchange with air in the intermediate heat exchanger (97).
- the enthalpy of the refrigerant sucked into the second volume changing section (32) is reduced by mixing the gas refrigerant from the gas-liquid separator (98).
- the scroll-type fluid machine (10) has the first discharge port (74) connected to the second suction port (77).
- the second discharge port (78) of the scroll fluid machine (10) is connected to one end of the condenser (91).
- the other end of the condenser (91) is connected to the top of the gas-liquid separator (98) via a first expansion valve (92).
- the top of the gas-liquid separator (98) is also connected to a pipe connecting the first discharge port (74) and the second suction port (77).
- the bottom of the gas-liquid separator (98) is connected to one end of the evaporator (93) via the second expansion valve (95).
- the other end of the evaporator (93) is connected to a first suction port (73) of the scroll fluid machine (10).
- the scroll fluid machine (10) sucks the refrigerant evaporated by the evaporator (93) from the first suction port (73).
- the refrigerant sucked into the first suction port (73) is sucked into the first fluid chamber (71) of the first volume changing portion (31), is compressed by being drawn in, and then from the first discharge port (74). Discharged.
- the refrigerant discharged from the first discharge port (74) merges with the relatively low enthalpy gas refrigerant from the gas-liquid separator (98), and then merges with the second volume from the second suction port (77).
- the fluid is sucked into the second fluid chamber (72) of the change portion (32) and is further compressed.
- the refrigerant compressed in the second volume changing section (32) is discharged from the second discharge port (78) and condensed in the condenser (91).
- the refrigerant condensed in the condenser (91) is decompressed when passing through the first expansion valve (92) and becomes a gas-liquid two-phase state, and thereafter flows into the gas-liquid separator (98).
- the liquid refrigerant flowing out of the gas-liquid separator (98) is further reduced in pressure when passing through the second expansion valve (95), and thereafter flows into the evaporator (93) and evaporates.
- the refrigerant circuit (90) of the present modification only the liquid refrigerant separated by the gas-liquid separator (98) is supplied to the evaporator (93). Therefore, the amount of heat absorbed by the refrigerant in the evaporator (93) can be increased, and the cooling capacity can be improved.
- Embodiment 6 of the Invention will be described.
- This embodiment is a modification of the third embodiment, except that the configuration of the main body mechanism (30) is changed.
- the points of the scroll type fluid machine (10) of the present embodiment that are different from those of the third embodiment will be described.
- both the first volume change section (31) and the second volume change section (32) constitute a compressor. .
- the compression ratio in the first volume change section (31) and the compression ratio in the second volume change section (32) are set to the same value.
- the first fluid chamber (71) and the second fluid chamber (72) have the same ratio of the maximum value to the minimum value for each volume.
- the scroll type fluid machine (10) of the present embodiment the second suction port (77) and the second discharge port (78) are omitted.
- the casing (11) of the scroll type fluid machine (10) is provided with only a first suction port (73) and a first discharge port (74).
- the scroll type fluid machine (10) has a first suction port (73) connected to the evaporator of the refrigerant circuit by piping, and a first discharge port (74) connected to the refrigerant. Connected to the condenser in the circuit.
- the suction port (79) is opened on the upper surface of the third flat plate (49).
- the second fluid chamber (72) of the second volume changing section (32) can communicate with the low-pressure chamber (12) via the suction port (79).
- the second discharge port (67) is formed in the second flat plate portion (52) instead of the third flat plate portion (49). Specifically, the second discharge port (67) is opened near the winding start side end of the second movable side wrap (54), and penetrates the second flat plate portion (52).
- the gas refrigerant is sucked into the first suction port (73).
- Part of the gas refrigerant flowing into the casing (11) from the first suction port (73) is sucked into the first fluid chamber (71) of the first volume changing portion (31), and the rest is supplied to the low pressure chamber (71).
- the liquid is sucked into the second fluid chamber (72) of the second volume change portion (32) through the inlet (12) and the suction port (79).
- the refrigerant drawn into the first fluid chamber (71) is compressed as the first movable wrap (53) moves, and flows into the discharge passage (22) through the first discharge port (63). I do.
- the refrigerant sucked into the second fluid chamber (72) is compressed with the movement of the second movable wrap (54), passes through the second discharge port (67) and the first discharge port (63). It flows into the discharge passage (22).
- the refrigerant discharged from the first fluid chamber (71) and the second fluid chamber (72) flows into the high-pressure chamber (13) through the discharge passage (22), and flows from the first discharge port (74) to the casing (11). ) Is discharged to the outside.
- the main body mechanism (30) of the present embodiment includes a first fluid chamber (71) between the first fixed side wrap (42) and the first movable side wrap (53), and a second fixed side wrap.
- the refrigerant is sucked into both the second fluid chamber (72) between the (47) and the second movable side wrap (54) and compressed.
- the displacement of the entire main body mechanism (30) can be sufficiently ensured. Therefore, according to the present embodiment, the displacement of the scroll fluid machine (10) can be set large without impairing the workability of each wrap (42, 47, 53, 54).
- the displacement can be set to different values. Therefore, according to the present embodiment, even when a plurality of types of scroll-type fluid machines (10) having different displacements are manufactured, it is possible to suppress an increase in the number of types of components accompanying the manufacture, and to increase the number of scroll-type fluid machines (10). 10) The manufacturing cost can be reduced.
- Embodiment 7 of the present invention will be described. This embodiment is obtained by changing the configuration of the main body mechanism (30) in the first embodiment.
- the differences of the scroll type fluid machine (10) of the present embodiment from the above-described first embodiment will be described.
- the third flat plate portion (49) is formed in a disk shape slightly smaller in diameter than the second flat plate portion (52) and is movable. Attached to scroll (50) It is. That is, in the main body mechanism (30), the third flat plate portion (49) is provided not on the second fixed side member (46) but on the movable scroll (50). In the main body mechanism (30), the third flat plate portion (49) revolves with the second flat plate portion (52) and the second movable side wrap (54), and the lower surface thereof has a second fixed side wrap (47). ) Is in sliding contact with the upper end surface.
- the second fixed-side member (46) includes a second outer peripheral portion (48) and a second fixed-side wrap (47).
- the second outer peripheral portion (48) In the second fixed side member (46), the second outer peripheral portion (48), the second outer peripheral portion (48), the second outer peripheral portion (48), the second outer peripheral portion (48), the second outer peripheral portion (48), the second outer peripheral portion (48), the second outer peripheral portion (47).
- the second fixed side wrap (47) protrudes in a cantilever shape from the inner peripheral surface of (48). That is, the second fixed side member (46) is formed in the same shape as the shape of the first fixed side member (41) (see FIG. 3).
- the first volume changing portion (31) includes a first flat plate portion (51), a second flat plate portion (52), and a first movable side wrap (51) of the movable scroll (50). 53) and the first fixed side member (41) of the fixed scroll (40) having the first fixed side wrap (42). This is the same as in the first embodiment.
- the second volume changing portion (32) is different from the first embodiment, and the second flat plate portion (52), the third flat plate portion (49), and the second movable side wrap of the movable scroll (50). (54) and the second fixed side member (46) of the fixed scroll (40) having the second fixed side wrap (47).
- the main body mechanism (30) is provided with a cover member (80).
- the cover member (80) is formed in a shape such that a circular dish is laid down, and is attached to the second fixed side member (46) to cover the third plate portion (49).
- a seal ring (81) is provided between 49.
- the seal ring (81) is fitted in a concave annular groove formed in the cover member (80), and its lower end surface is in sliding contact with the upper surface of the third flat plate portion (49). Further, the seal ring (81) is arranged so as to surround the periphery of the inlet (66) in the third flat plate portion (49). Further, of the space formed between the cover member (80) and the second fixed side member (46), the inside of the seal ring (81) constitutes a high-pressure space (82), and the seal ring (81) Outside constitutes a low-pressure space (83).
- the inflow port (75) and the outflow port (76) are both attached to the cover member (80).
- One end of the inflow port (75) opens into the high-pressure space (82), and one end of the outflow port (76) opens into the low-pressure space (83).
- the refrigerant that has flowed into the inflow port (75) once flows into the high-pressure space (82), and is then introduced into the second fluid chamber (72) through the inflow port (66). You. Further, the refrigerant discharged from the second fluid chamber (72) is discharged to the outflow port (76) through the low-pressure space (83).
- a movable plate (50) is provided with a third flat plate portion (49) that partitions the second fluid chamber (72).
- the internal pressure of the second fluid chamber (72) acts on the second flat plate portion (52) and the third flat plate portion (49), but the force acting on the second flat plate portion (52) and the third flat plate portion (52)
- the forces acting on (49) have the same magnitude and opposite directions. Therefore, the force of the fluid in the first fluid chamber (71) on the first flat plate portion (51) and the force on the second flat plate portion (52) cancel each other, and the fluid in the second fluid chamber (72) cancels out.
- the force exerted on the second flat plate portion (52) and the force exerted on the third flat plate portion (49) also cancel each other.
- the force that the movable scroll (50) receives from the fluid in each of the fluid chambers (71, 72) can be made apparently zero, and acts on the movable scroll (50).
- Axial load that is, thrust load
- the friction loss when the orbiting scroll (50) orbits can remarkably be reduced, and the efficiency of the scroll type fluid machine (10) can be improved.
- the oil pressure of the refrigerating machine oil acts on the inside of the seal ring (38) on the bottom surface of the flange (65), and an upward load acts on the orbiting scroll (50) by this oil pressure.
- the gas pressure in the high-pressure space (82) acts on the upper surface of the third flat plate portion (49) inside the seal ring (81), and the gas pressure acts on the movable scroll (50) in a downward load. Acts. Therefore, according to this embodiment, if the diameters of the two seal rings (38, 81) are set appropriately, the upward load due to hydraulic pressure and the downward load due to gas pressure can be balanced, and the movable scroll (50 It is also possible to make the thrust load acting on ()) zero.
- the first movable side wrap (53) and the first fixed side wrap (42) and the second movable side wrap (54) and Both the second fixed-side wrap (47) is formed in the same spiral direction so that both the first volume change section (31) and the second volume change section (32) constitute a compressor.
- the first movable side wrap (53) and the first fixed side wrap (42) and both the second movable side wrap (54) and the second fixed side wrap (47) are formed in the same spiral direction while applying a force.
- both the first volume change section (31) and the second volume change section (32) may constitute an expander instead of a compressor.
- the cylindrical bearing portion (64) is formed on the back side of the first flat plate portion (51), and the eccentric portion (21) provided on the upper end of the drive shaft (20) is formed. ) Is inserted into the bearing (64), but the following structure may be used instead.
- a columnar projection is provided on the back side of the first flat plate (51), while a hole is formed at the upper end of the drive shaft (20), and the projection of the first flat plate (51) is connected to the drive shaft.
- the movable scroll (50) may be engaged with the drive shaft (20) by inserting into the hole of (20).
- the protrusion protruding from the back surface of the first flat plate (51) constitutes the engaging portion.
- the present invention is useful for a scroll type fluid machine in which a fluid is compressed or expanded.
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Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04770936A EP1653084A4 (en) | 2003-07-28 | 2004-07-26 | LIQUID MACHINE OF THE SCREW TYPE WITHOUT END |
AU2004259945A AU2004259945B2 (en) | 2003-07-28 | 2004-07-26 | Scroll type fluid machinery |
JP2005512051A JP4337820B2 (ja) | 2003-07-28 | 2004-07-26 | スクロール型流体機械 |
US10/565,842 US7172395B2 (en) | 2003-07-28 | 2004-07-26 | Scroll-type fluid machine |
CN2004800191145A CN1816696B (zh) | 2003-07-28 | 2004-07-26 | 涡旋型流体机械 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-281171 | 2003-07-28 | ||
JP2003281171 | 2003-07-28 | ||
JP2003291043 | 2003-08-11 | ||
JP2003-291043 | 2003-08-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005010371A1 true WO2005010371A1 (ja) | 2005-02-03 |
Family
ID=34106917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/010625 WO2005010371A1 (ja) | 2003-07-28 | 2004-07-26 | スクロール型流体機械 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7172395B2 (ja) |
EP (1) | EP1653084A4 (ja) |
JP (1) | JP4337820B2 (ja) |
KR (1) | KR100725893B1 (ja) |
AU (1) | AU2004259945B2 (ja) |
WO (1) | WO2005010371A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8128388B2 (en) * | 2006-09-28 | 2012-03-06 | Mitsubishi Electric Corporation | Scroll-type expansion machine |
US7988433B2 (en) | 2009-04-07 | 2011-08-02 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
US9651043B2 (en) | 2012-11-15 | 2017-05-16 | Emerson Climate Technologies, Inc. | Compressor valve system and assembly |
US9249802B2 (en) | 2012-11-15 | 2016-02-02 | Emerson Climate Technologies, Inc. | Compressor |
US9790940B2 (en) | 2015-03-19 | 2017-10-17 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
US10598180B2 (en) | 2015-07-01 | 2020-03-24 | Emerson Climate Technologies, Inc. | Compressor with thermally-responsive injector |
US10890186B2 (en) | 2016-09-08 | 2021-01-12 | Emerson Climate Technologies, Inc. | Compressor |
US10801495B2 (en) | 2016-09-08 | 2020-10-13 | Emerson Climate Technologies, Inc. | Oil flow through the bearings of a scroll compressor |
US10753352B2 (en) | 2017-02-07 | 2020-08-25 | Emerson Climate Technologies, Inc. | Compressor discharge valve assembly |
US11022119B2 (en) | 2017-10-03 | 2021-06-01 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
US10962008B2 (en) | 2017-12-15 | 2021-03-30 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
US10995753B2 (en) | 2018-05-17 | 2021-05-04 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
US11655813B2 (en) | 2021-07-29 | 2023-05-23 | Emerson Climate Technologies, Inc. | Compressor modulation system with multi-way valve |
US11846287B1 (en) | 2022-08-11 | 2023-12-19 | Copeland Lp | Scroll compressor with center hub |
US11965507B1 (en) | 2022-12-15 | 2024-04-23 | Copeland Lp | Compressor and valve assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05312160A (ja) * | 1992-05-08 | 1993-11-22 | Daikin Ind Ltd | スクロール型流体装置 |
JPH07133770A (ja) * | 1993-11-11 | 1995-05-23 | Daikin Ind Ltd | スクロール型流体装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1255799A (en) * | 1967-12-18 | 1971-12-01 | Krauss Maffei Ag | Rotary positive fluid displacement apparatus |
US4192152A (en) * | 1978-04-14 | 1980-03-11 | Arthur D. Little, Inc. | Scroll-type fluid displacement apparatus with peripheral drive |
JPS61152984A (ja) * | 1984-12-26 | 1986-07-11 | Nippon Soken Inc | スクロ−ル型圧縮機 |
JP2718295B2 (ja) * | 1991-08-30 | 1998-02-25 | ダイキン工業株式会社 | スクロール圧縮機 |
JP3700218B2 (ja) | 1995-11-07 | 2005-09-28 | ダイキン工業株式会社 | スクロール型流体装置 |
JP4419039B2 (ja) | 2001-02-08 | 2010-02-24 | 株式会社豊田自動織機 | 燃料電池用スクロール式圧縮機 |
JP2005282495A (ja) * | 2004-03-30 | 2005-10-13 | Anest Iwata Corp | スクロール流体機械 |
-
2004
- 2004-07-26 EP EP04770936A patent/EP1653084A4/en not_active Withdrawn
- 2004-07-26 WO PCT/JP2004/010625 patent/WO2005010371A1/ja active Application Filing
- 2004-07-26 AU AU2004259945A patent/AU2004259945B2/en not_active Ceased
- 2004-07-26 US US10/565,842 patent/US7172395B2/en not_active Expired - Fee Related
- 2004-07-26 KR KR1020067001902A patent/KR100725893B1/ko not_active IP Right Cessation
- 2004-07-26 JP JP2005512051A patent/JP4337820B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05312160A (ja) * | 1992-05-08 | 1993-11-22 | Daikin Ind Ltd | スクロール型流体装置 |
JPH07133770A (ja) * | 1993-11-11 | 1995-05-23 | Daikin Ind Ltd | スクロール型流体装置 |
Also Published As
Publication number | Publication date |
---|---|
JP4337820B2 (ja) | 2009-09-30 |
AU2004259945B2 (en) | 2007-10-04 |
EP1653084A4 (en) | 2011-07-06 |
KR20060030521A (ko) | 2006-04-10 |
AU2004259945A1 (en) | 2005-02-03 |
JPWO2005010371A1 (ja) | 2007-09-27 |
EP1653084A1 (en) | 2006-05-03 |
KR100725893B1 (ko) | 2007-06-08 |
US20060182645A1 (en) | 2006-08-17 |
US7172395B2 (en) | 2007-02-06 |
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