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WO2017154064A1 - Compresseur à volutes et dispositif à cycle de réfrigération - Google Patents

Compresseur à volutes et dispositif à cycle de réfrigération Download PDF

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Publication number
WO2017154064A1
WO2017154064A1 PCT/JP2016/056933 JP2016056933W WO2017154064A1 WO 2017154064 A1 WO2017154064 A1 WO 2017154064A1 JP 2016056933 W JP2016056933 W JP 2016056933W WO 2017154064 A1 WO2017154064 A1 WO 2017154064A1
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WO
WIPO (PCT)
Prior art keywords
scroll
relief
fixed
port
ports
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/056933
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English (en)
Japanese (ja)
Inventor
誠 伊勢野
圭亮 鳴海
茗ヶ原　将史
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2016/056933 priority Critical patent/WO2017154064A1/fr
Publication of WO2017154064A1 publication Critical patent/WO2017154064A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a scroll compressor and a refrigeration cycle apparatus provided with a relief mechanism for relieving a refrigerant in the middle of compression that has become a discharge pressure or higher under pressure conditions of a low compression ratio from a compression chamber.
  • a conventional scroll compressor is disclosed in Patent Document 1.
  • a compression mechanism section is provided in a sealed container.
  • the compression mechanism section has a fixed scroll and an orbiting scroll each including a standing wall-shaped spiral body formed along an involute spiral on the base plate.
  • the spiral bodies of the fixed scroll and the swing scroll are combined so as to face each other.
  • the fixed scroll is fixed to the sealed container.
  • the swing scroll is held by a frame fixed in the hermetic container.
  • the rocking scroll is rocked by an eccentric crankshaft while its posture is maintained by an Oldham ring having a claw shape for restricting the scroll from rotating.
  • the two scroll parts facing each other form a compression chamber from the outside of the spiral shape by combining the spiral bodies of each other.
  • the refrigerant is sucked from a suction port provided in the compression mechanism part, transferred and compressed in the center in the compression chamber, and discharged from the compression mechanism part into the sealed container by the discharge port provided in the spiral center part.
  • the overcompressed state is a state in which the refrigerant pressure in the middle of compression exceeds the discharge pressure, and the energy consumed for compression above the discharge pressure is lost.
  • a relief mechanism having a relief hole for relieving the refrigerant to the discharge pressure space and a relief valve for preventing a backflow from the relief hole.
  • the refrigerant that has been overcompressed until the compression chamber formed between the two spiral bodies moves to the center is relieved from the relief hole to the discharge pressure space.
  • the refrigerant that flows backward from the discharge pressure space to the compression chamber is prevented from flowing back into the relief hole by the relief valve.
  • the compression chamber is prevented from being over-compressed, and the over-compression loss is reduced.
  • Compressor chamber capacity must be secured when performing scroll compressor volume expansion or downsizing.
  • One of the main methods for securing the capacity of the compression chamber is to reduce the thickness of the spiral body.
  • the thickness of the spiral body is smaller than the diameter of the relief hole, the internal and external compression chambers on both sides of the spiral body communicate with each other through the relief hole when the spiral body overlaps the relief hole. .
  • a reverse flow of the refrigerant occurs from the high pressure side compression chamber to the low pressure side compression chamber.
  • reducing the thickness of the spiral body has a limitation on the diameter of the relief hole.
  • a relief hole with a plurality of relief ports that open to the compression chamber and a merge port that joins the relief ports and opens to the discharge pressure space.
  • one relief valve that opens and closes the opening of the junction port is provided, so that an increase in the number of parts can be suppressed, costs can be suppressed, and man-hours can be suppressed.
  • the force applied to the relief valve causes the free end and fixed end of the relief valve to There is a possibility that the relief valve is twisted and broken, not evenly on both sides with respect to the connecting center line.
  • the present invention is for solving the above-mentioned problems.
  • the force applied to the relief valve is equal on both sides with respect to the center line, and the relief valve is difficult to break without being twisted.
  • An object of the present invention is to provide a scroll compressor and a refrigeration cycle apparatus in which improvement is achieved.
  • a scroll compressor includes a hermetic container and a spiral body provided in the hermetic container, each of which is provided on a base plate, and the mutual spiral bodies are combined to form a compression chamber.
  • a compression mechanism having a scroll and an orbiting scroll; an electric mechanism for driving the orbiting scroll; and a rotating shaft for transmitting the rotational force of the electric mechanism to the orbiting scroll so as to be in an orbiting motion;
  • the base plate of the fixed scroll is provided with a relief hole that communicates the compression chamber and a discharge pressure space on the opposite side of the fixed scroll having the spiral body, and the relief hole includes A plurality of relief ports opened in the compression chamber, and a merge port opened in the discharge pressure space by joining the plurality of relief ports, and the fixed scroll
  • On the surface of the base plate on the discharge pressure space side there is provided a relief valve that connects a free end portion that opens and closes the opening portion of the merging port and a fixed end portion that is fixed to the base plate of the fixed scroll.
  • a refrigeration cycle apparatus includes the scroll compressor described above.
  • the opening portion of the merge port is formed in a line-symmetric shape with respect to the center line connecting the free end portion and the fixed end portion of the relief valve.
  • FIG. 2B is an explanatory view showing the AA cross section of FIG. 2A of the relief mechanism of the scroll compressor according to the first embodiment of the present invention.
  • 2B is an explanatory diagram showing a BB cross section of FIG. 2A of the relief mechanism of the scroll compressor according to the first embodiment of the present invention.
  • FIG. It is explanatory drawing which shows the valve closing state of the relief valve of the scroll compressor which concerns on Embodiment 1 of this invention.
  • movement of (theta) 270 degrees among 1 rotation of the rocking
  • FIG. 1 is an explanatory diagram showing a schematic configuration of a scroll compressor 100 according to Embodiment 1 of the present invention.
  • the scroll compressor 100 is a high-pressure shell type scroll compressor.
  • the compression mechanism unit 1 is accommodated in the upper part of the sealed container 18.
  • An electric mechanism 19 is housed in the lower part of the sealed container 18.
  • the compression mechanism unit 1 includes a fixed scroll 2, an orbiting scroll 3, a guide frame 4, a compliant frame 5, and an Oldham ring 6 as main components.
  • a relief mechanism 20 is provided in the compression mechanism unit 1.
  • the electric mechanism part 19 has the stator 10, the rotor 8, the balance weight 9, and the cup 12 as main components.
  • the electric mechanism unit 19 drives the swing scroll 3.
  • the compression mechanism unit 1 and the electric mechanism unit 19 are connected by a rotating shaft 7.
  • the rotating shaft 7 connects the swing scroll 3 eccentrically from the electric mechanism portion 19 and transmits the rotational force of the electric mechanism portion 19 to the swing scroll 3 so as to be in a swing motion.
  • the fixed scroll 2 in the compression mechanism unit 1 is fixed to the guide frame 4 with bolts.
  • the guide frame 4 is fixed to the sealed container 18 by welding.
  • the swing scroll 3 is held by a compliant frame 5.
  • the compliant frame 5 is held by the guide frame 4.
  • the claw shape of the Oldham ring 6 is applied to the groove shape provided in the fixed scroll 2 and the orbiting scroll 3, and the position of the orbiting scroll 3 is set so that the orbiting scroll 3 does not rotate with respect to the fixed scroll 2. It is regulated.
  • a discharge port 16 for discharging the refrigerant from the compression mechanism unit 1 is provided at the center of the fixed scroll 2.
  • a suction port 14 for sucking refrigerant into the compression mechanism 1 is provided below and outside the fixed scroll 2.
  • the fixed scroll 2 and the orbiting scroll 3 are provided in the hermetic container 18, and are provided on the base plates 2a and 3a, respectively.
  • the fixed spiral body 2b and the swinging spiral body 3b are combined, and the fixed spiral body 2b and the swinging spiral body 3b are combined to form a compression chamber.
  • the fixed scroll 2 having the standing wall-shaped fixed spiral body 2b formed along the involute spiral on the base plate 2a and the standing wall-shaped swinging spiral body 3b having the same shape as the fixed spiral body 2b of the fixed scroll 2 are provided.
  • the oscillating scroll 3 that is provided is combined so as to face each other.
  • the rocking scroll 3 is rocked by the power obtained from the electric mechanism unit 19 by the eccentric rotating shaft 7.
  • the claw shape of the Oldham ring 6 moves in parallel along the groove shapes provided at right angles to the fixed scroll 2 and the orbiting scroll 3, and the rotational movement of the orbiting scroll 3 relative to the fixed scroll 2 is restricted.
  • the fixed scroll 2 and the oscillating scroll 3 combined in opposition to each other make the compression chamber 31 from the outside of the spiral shape by the mutual contact between the fixed vortex body 2b and the oscillating spiral body 3b.
  • the refrigerant is sucked from the suction port 14 by the swing motion of the swing scroll 3, transported and compressed toward the center of the fixed spiral body 2 b and the swing spiral body 3 b, and the discharge port provided at the center of the compression mechanism unit 1. 16 is discharged into the sealed container 18.
  • the high-pressure refrigerant discharged into the sealed container 18 flows out from the discharge pipe 15 to the refrigeration cycle circuit.
  • FIG. 2A is a top view showing relief mechanism 20 of scroll compressor 100 according to Embodiment 1 of the present invention.
  • FIG. 2B is an explanatory diagram showing the AA cross section of FIG. 2A of the relief mechanism 20 of the scroll compressor 100 according to Embodiment 1 of the present invention.
  • FIG. 2C is an explanatory view showing a BB cross section of FIG. 2A of the relief mechanism 20 of the scroll compressor 100 according to Embodiment 1 of the present invention.
  • a relief mechanism 20 is provided in the compression mechanism unit 1 of the scroll compressor 100.
  • the relief mechanism 20 includes a relief hole 21, a relief valve 22, a stopper 23, and a bolt 24.
  • the relief hole 21 is provided in the base plate 2a of the fixed scroll 2 so as to communicate the compression chamber 31 and the discharge pressure space 30 on the opposite side of the fixed scroll 2 from the side having the fixed spiral body 2b.
  • a confluence port 21b is provided in the base plate 2a of the fixed scroll 2 so as to communicate the compression chamber 31 and the discharge pressure space 30 on the opposite side of the fixed scroll 2 from the side having the fixed spiral body 2b.
  • the two relief ports 21a are circular in cross section, and two are formed as a set with the same hole diameter in the thickness direction of the base plate 2a of the fixed scroll 2.
  • the two relief ports 21 a are formed with openings that open to the compression chamber 31 in a region adjacent to the fixed spiral body 2 b of the fixed scroll 2.
  • the hole diameters of the two relief ports 21 a are smaller than the thickness of the swinging spiral body 3 b of the swinging scroll 3.
  • the merge port 21b has a circular cross section, and the two relief ports 21a, which are a set of two, merge.
  • the merge port 21 b is provided with the same hole diameter in the thickness direction of the base plate 2 a of the fixed scroll 2.
  • the opening part opened to the discharge pressure space 30 of the merging port 21b is formed in the range including the opening part joined to the merging port 21b of the two relief ports 21a.
  • the relief valve 22 includes a free end 22a that opens and closes an opening opened in the discharge pressure space 30 of the merge port 21b on the surface of the base plate 2a of the fixed scroll 2 on the discharge pressure space 30 side, and a base plate of the fixed scroll 2 And a fixed end 22b fixed to 2a. That is, one relief valve 22 is arranged corresponding to one of the merging ports 21b.
  • the free end 22a of the relief valve 22 has a larger area than the opening so as to close the opening that opens to the discharge pressure space 30 of the merging port 21b.
  • the fixed end 22 b of the relief valve 22 is fixed by screwing the bolt 24 to the base plate 2 a of the fixed scroll 2.
  • the bolt 24 also fixes the stopper 23 together with the relief valve 22.
  • the relief valve 22 has a free end portion 22a and a fixed end portion 22b that are wider than their intermediate portions.
  • the relief valve 22 extends straight along a center line 25 connecting the free end 22a and the fixed end 22b.
  • the stopper 23 presses the relief valve 22 from the rear so that it does not bend too much into the discharge pressure space 30 when the relief valve 22 is opened.
  • the stopper 23 has a rectangular shape that is slightly larger than the relief valve 22, and is configured such that the free end 22 a side of the relief valve 22 is bent from the beginning to the discharge pressure space 30 side.
  • the stopper 23 is fixed using a bolt 24 together with the fixed end 22 b of the relief valve 22.
  • the opening opened to the discharge pressure space 30 of the merging port 21b is a circle symmetrical with respect to the center line 25 connecting the free end 22a and the fixed end 22b of the relief valve 22. It is formed into a shape.
  • the opening joined to the joining port 21b of the two relief ports 21a is symmetrical with respect to the center line 25 connecting the free end portion 22a and the fixed end portion 22b of the relief valve 22 with respect to the center line 25.
  • the center of the opening joined to the joining port 21b of the two relief ports 21a is located on the orthogonal line 26 orthogonal to the center line 25 of the relief valve 22.
  • the center position of the opening joined to the joining port 21b of the two relief ports 21a is separated from the intersection of the center line 25 and the orthogonal line 26 by an equal distance.
  • FIG. 3A is an explanatory diagram showing a closed state of the relief valve 22 of the scroll compressor 100 according to Embodiment 1 of the present invention.
  • FIG. 3B is an explanatory diagram showing the opened state of the relief valve 22 of the scroll compressor 100 according to Embodiment 1 of the present invention.
  • the compression chamber 31 formed by the fixed scroll 2 and the fixed scroll 2 b and the swing scroll 3 b of the fixed scroll 2 takes in the refrigerant from the suction port 14, and the end of the swing scroll of the swing scroll 3 is the fixed scroll.
  • the compression is performed from the point of time when the compression chamber 31 is closed in contact with the two fixed spiral bodies 2b. With the swinging motion of the swing scroll 3, the compression chamber 31 moves toward the center of the fixed spiral body 2b and the swing spiral body 3b.
  • the relief mechanism 20 is shown as an opening that opens into the compression chambers 31 of the two relief ports 21a.
  • the two relief ports 21 a are formed with openings that open to the compression chamber 31 in a region adjacent to the fixed spiral body 2 b of the fixed scroll 2.
  • the hole diameters of the two relief ports 21 a are smaller than the thickness of the swinging spiral body 3 b of the swinging scroll 3.
  • the two relief ports 21a are fixed to the fixed scroll 2 at a position where the orbiting scroll 3 and the orbiting spiral body 3b of the orbiting scroll 3 overlap with the openings opened in the compression chambers 31 of the two relief ports 21a.
  • the openings opened in the compression chambers 31 of the two relief ports 21a are closed by the thickness of the rocking spiral body 3b of the rocking scroll 3.
  • the three relief mechanisms 20 represented by the two relief ports 21a are arranged so that any one of the compression chambers 31 from the start of compression to the discharge from the discharge port 16 has one relief.
  • the state communicating with the mechanism 20 is ensured, and the compression chamber 31 is always suppressed from being overcompressed.
  • the relief amount equal to or larger than the conventional one is secured by providing two relief ports 21a. is doing. Further, the two relief ports 21 a join the flow paths to the merge port 21 b until the relief to the discharge pressure space 30, and the opening to the discharge pressure space 30 of the merge port 21 b is closed by one relief valve 22. By doing so, an increase in the number of parts can be suppressed.
  • merging port 21b is formed in the circular shape symmetrical with respect to the centerline 25 which connects the free end part 22a of the relief valve 22, and the fixed end part 22b.
  • the opening joined to the joining port 21b of the two relief ports 21a is symmetrical with respect to the center line 25 connecting the free end portion 22a and the fixed end portion 22b of the relief valve 22 with respect to the center line 25.
  • the force applied to the relief valve 22 becomes equal on both sides with respect to the center line 25.
  • the relief valve 22 is not easily broken without being twisted, and the use durability is improved. Further, the dead volume can be minimized in accordance with the position phase of the relief valve 22, and the compressor efficiency can be maintained and improved together with securing the relief amount.
  • FIG. 5 is a top view showing the relief mechanism 20 of Modification 1 according to Embodiment 1 of the present invention.
  • FIG. 6 is a top view showing the relief mechanism 20 of Modification 2 according to Embodiment 1 of the present invention.
  • FIG. 7 is a top view showing the relief mechanism 20 of Modification 3 according to Embodiment 1 of the present invention.
  • the opening portion opened to the discharge pressure space 30 of the merging port 21b is axisymmetric with respect to the center line 25 connecting the free end portion 22a and the fixed end portion 22b of the relief valve 22. It is formed into a shape. Further, the opening joined to the joining port 21b of the two or three relief ports 21a is arranged symmetrically with respect to the center line 25 connecting the free end 22a and the fixed end 22b of the relief valve 22. . Furthermore, the opening part opened to the discharge pressure space 30 of the merging port 21b is formed in the range including the opening part merged with the merging port 21b of two or three relief ports. In the first modification shown in FIG.
  • the opening joined to the joining port 21b of the two relief ports 21a is the center connecting the free end 22a and the fixed end 22b of the relief valve 22. They are arranged symmetrically with respect to the line 25 on both sides of the center line.
  • the opening joined to the merge port 21 b of the two or three relief ports 21 a is formed by a free end 22 a and a fixed end 22 b of the relief valve 22.
  • the same effects as those of the first embodiment can be obtained.
  • FIG. 8 is a top view showing the relief mechanism 20 of Modification 4 according to Embodiment 1 of the present invention.
  • FIG. 9 is a top view showing the relief mechanism 20 of Modification 5 according to Embodiment 1 of the present invention.
  • FIG. 10 is a top view showing the relief mechanism 20 of Modification 6 according to Embodiment 1 of the present invention.
  • FIG. 11 is a top view showing the relief mechanism 20 of Modification 7 according to Embodiment 1 of the present invention.
  • the opening opened to the discharge pressure space 30 of the merging port 21b is axisymmetric with respect to the center line 25 connecting the free end 22a and the fixed end 22b of the relief valve 22. It is formed into a shape. However, the opening joined to the joining port 21b of the two or three relief ports 21a is not arranged symmetrically with respect to the center line 25 connecting the free end 22a and the fixed end 22b of the relief valve 22. . However, the opening part opened to the discharge pressure space 30 of the merging port 21b is formed in the range including the opening part merged with the merging port 21b of the two or three relief ports 21a.
  • the opening joined to the joining port 21b of the two or three relief ports 21a is in relation to the center line 25 connecting the free end 22a and the fixed end 22b of the relief valve 22.
  • the balance in which the force applied to the relief valve 22 is equal on both sides with respect to the center line 25 is slightly weakened, but the same effect as in the first embodiment can be obtained.
  • FIG. FIG. 12 is a refrigerant circuit diagram showing a refrigeration cycle apparatus 200 to which the scroll compressor 100 according to Embodiment 2 of the present invention is applied.
  • the refrigeration cycle apparatus 200 includes a scroll compressor 100, a condenser 80, an expansion valve 81, and an evaporator 82.
  • the scroll compressor 100, the condenser 80, the expansion valve 81, and the evaporator 82 are connected by a refrigerant pipe to form a refrigeration cycle circuit. Then, the refrigerant flowing out of the evaporator 82 is sucked into the scroll compressor 100 and becomes high temperature and pressure.
  • the high-temperature and high-pressure refrigerant is condensed in the condenser 80 to become a liquid.
  • the refrigerant that has become liquid is decompressed and expanded by the expansion valve 81 to become a low-temperature and low-pressure gas-liquid two-phase, and the gas-liquid two-phase refrigerant is heat-exchanged in the evaporator 82.
  • the scroll compressor 100 according to Embodiment 1 and Modifications 1 to 7 can be applied to such a refrigeration cycle apparatus 200.
  • the refrigeration cycle apparatus 200 include an air conditioner, a refrigeration apparatus, and a water heater.
  • the scroll compressor 100 includes the sealed container 18.
  • the fixed spiral body 2b and the swing spiral body 3b which are provided in the sealed container 18 and are respectively provided on the base plates 2a and 3a, are compressed by combining the fixed spiral body 2b and the swing spiral body 3b.
  • a compression mechanism 1 having a fixed scroll 2 and a swinging scroll 3 forming a chamber 31 is provided.
  • An electric mechanism unit 19 for driving the orbiting scroll 3 is provided.
  • a rotating shaft 7 is provided for transmitting the rotational force of the electric mechanism section 19 to the orbiting scroll 3 so as to be in an oscillating motion.
  • the base plate 2a of the fixed scroll 2 is provided with a relief hole 21 for communicating the compression chamber 31 with the discharge pressure space 30 on the opposite side of the fixed scroll 2 from the side having the fixed spiral body 2b.
  • the relief hole 21 is provided with two or three relief ports 21a opened in the compression chamber 31, and a merge port 21b opened in the discharge pressure space 30 by joining the two or three relief ports 21a. Yes.
  • a surface of the base plate 2a of the fixed scroll 2 on the discharge pressure space 30 side is connected with a free end portion 22a that opens and closes the opening of the merging port 21b and a fixed end portion 22b fixed to the base plate 2a of the fixed scroll 2.
  • a relief valve 22 is provided.
  • the opening of the merging port 21b is formed in a line-symmetric shape with respect to the center line 25 connecting the free end 22a and the fixed end 22b of the relief valve 22. According to this configuration, when the refrigerant is relieved from the opening of the confluence port 21 b of the relief hole 21 to the discharge pressure space 30, the force applied to the relief valve 22 is equal on both sides with respect to the center line 25. It is difficult to break without being twisted, and durability is improved.
  • the opening joined to the joining port 21b of the two or three relief ports 21a is arranged symmetrically with respect to the center line 25 connecting the free end 22a and the fixed end 22b of the relief valve 22. According to this configuration, when the refrigerant is relieved from the opening of the junction port 21 b of the relief hole 21 to the discharge pressure space 30, the effect that the force applied to the relief valve 22 is equal on both sides with respect to the center line 25 is improved. In addition, the relief valve 22 is not easily broken without being twisted, and the use durability is improved.
  • the opening portion of the merge port 21b is formed in a range including the opening portion that merges with the merge port 21b of the two or three relief ports 21a. According to this configuration, the overcompressed refrigerant can be ejected without the opening joined to the joining port 21b of the two or three relief ports 21a being narrowed by the joining port 21b. For this reason, when the refrigerant from the two or three relief ports 21a merges with the merge port 21b, the refrigerant is not disturbed excessively.
  • the merge port 21b is formed in a counterbore hole, and the two or three relief ports 21a can be directly formed through the merge port 21b so that the relief hole 21 can be easily processed. Man-hours are reduced and costs can be reduced.
  • the two or three relief ports 21 a are provided with the same hole diameter in the thickness direction of the base plate 2 a of the fixed scroll 2.
  • the merge port 21 b is provided with the same hole diameter in the thickness direction of the base plate 2 a of the fixed scroll 2.
  • the two or three relief ports 21a and the merging port 21b may be formed as through holes that penetrate straight in the thickness direction of the base plate 2a of the fixed scroll 2, and the relief holes 21 can be easily processed. It is possible to reduce the man-hours and costs.
  • the two or three relief ports 21 a are formed with openings that open to the compression chamber 31 in a region adjacent to the fixed spiral body 2 b of the fixed scroll 2.
  • the fixed scroll 2 of the fixed scroll 2 is moved at a position where the swing scroll 3 is swung so that the swing scroll 3b of the swing scroll 3 overlaps the openings of the two or three relief ports 21a opened in the compression chambers 31.
  • the openings of the two or three relief ports 21a opened in the compression chamber 31 are closed by the thickness of the oscillating spiral body 3b of the oscillating scroll 3. According to this configuration, the two or three relief ports 21a do not communicate with the inner and outer compression chambers 31 on both sides of the swing scroll 3b of the swing scroll 3.
  • the refrigeration cycle apparatus 200 includes a scroll compressor 100. According to this configuration, when the refrigeration cycle apparatus 200 including the scroll compressor 100 relieves the refrigerant from the opening of the merge port 21 b of the relief hole 21 to the discharge pressure space 30, the force applied to the relief valve 22 is reduced. It becomes equal on both sides with respect to the center line 25, and the relief valve 22 is not twisted and is not easily broken, so that the use durability is improved.
  • the number of relief ports formed in one relief hole is not limited to the above two or three.
  • the number of relief ports formed in one relief hole may be four or more as long as it is plural.
  • 1 compression mechanism section 2 fixed scroll, 2a base plate, 2b fixed spiral body, 3 swing scroll, 3a base plate, 3b swing spiral body, 4 guide frame, 5 compliant frame, 6 Oldham ring, 7 rotating shaft, 8 rotor, 9 balance weight, 10 stator, 12 cup, 14 suction port, 15 discharge pipe, 16 discharge port, 18 sealed container, 19 electric mechanism, 20 relief mechanism, 21 relief hole, 21a relief port, 21b merge port, 22 relief valve, 22a free end, 22b fixed end, 23 stopper, 24 bolt, 25 center line, 26 orthogonal line, 30 discharge pressure space, 31 compression chamber, 80 condenser, 81 expansion valve, 82 evaporator, 100 Scroll compressor, 200 refrigeration cycle Location.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

L'invention concerne un compresseur à volutes, au moyen duquel, lors de la détente d'un réfrigérant, une force agissant sur une vanne de détente est égale des deux côtés d'une ligne centrale, et, par conséquent, la vanne de détente n'est par tordue, de telle sorte que la vanne de détente n'est pas susceptible de se rompre et a une durée de vie améliorée lors de l'utilisation. Un compresseur à volutes comporte un récipient fermé, un mécanisme de compression, un mécanisme d'entraînement électrique et un arbre rotatif. La plaque de base d'une volute fixe comporte un trou de détente. Le trou de détente comporte une pluralité d'orifices de détente et un orifice de combinaison d'écoulement. Une surface de la plaque de base de la volute fixe, la surface faisant face à un espace de pression de décharge, comporte une vanne de détente. L'ouverture de l'orifice de combinaison d'écoulement est formée sous une forme qui est symétrique par rapport à la ligne centrale reliant l'extrémité libre et l'extrémité fixe de la vanne de détente.
PCT/JP2016/056933 2016-03-07 2016-03-07 Compresseur à volutes et dispositif à cycle de réfrigération Ceased WO2017154064A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/056933 WO2017154064A1 (fr) 2016-03-07 2016-03-07 Compresseur à volutes et dispositif à cycle de réfrigération

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/056933 WO2017154064A1 (fr) 2016-03-07 2016-03-07 Compresseur à volutes et dispositif à cycle de réfrigération

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WO2017154064A1 true WO2017154064A1 (fr) 2017-09-14

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04255589A (ja) * 1991-02-08 1992-09-10 Toshiba Corp スクロール式圧縮機
JP2008286095A (ja) * 2007-05-17 2008-11-27 Daikin Ind Ltd スクロール圧縮機
JP2011149376A (ja) * 2010-01-22 2011-08-04 Daikin Industries Ltd スクロール圧縮機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04255589A (ja) * 1991-02-08 1992-09-10 Toshiba Corp スクロール式圧縮機
JP2008286095A (ja) * 2007-05-17 2008-11-27 Daikin Ind Ltd スクロール圧縮機
JP2011149376A (ja) * 2010-01-22 2011-08-04 Daikin Industries Ltd スクロール圧縮機

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