WO2019049226A1 - 密閉型圧縮機及び冷凍サイクル装置 - Google Patents
密閉型圧縮機及び冷凍サイクル装置 Download PDFInfo
- Publication number
- WO2019049226A1 WO2019049226A1 PCT/JP2017/032046 JP2017032046W WO2019049226A1 WO 2019049226 A1 WO2019049226 A1 WO 2019049226A1 JP 2017032046 W JP2017032046 W JP 2017032046W WO 2019049226 A1 WO2019049226 A1 WO 2019049226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injection
- passage
- cylinder chamber
- introduction
- check valve
- Prior art date
Links
Images
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- 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
- F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
Definitions
- Embodiments of the present invention relate to a hermetic compressor and a refrigeration cycle apparatus provided with an injection flow channel.
- an injection flow path may be provided for guiding liquid refrigerant at an intermediate pressure in a refrigeration cycle to a cylinder chamber of a compression mechanism portion for the purpose of cooling.
- the liquid refrigerant at this intermediate pressure evaporates in the cylinder chamber and reduces the temperature of the discharged refrigerant discharged from the cylinder chamber.
- such a hermetic compressor is also equipped with a check valve in the middle of the injection flow path in order to reduce the compression loss due to the backflow of the refrigerant compressed from the cylinder chamber to the injection flow path. is there.
- the injection flow channels of the compressors described in Patent Document 1 and Patent Document 2 include an introduction channel for introducing the liquid refrigerant into the compression mechanism and an injection channel for injecting the liquid refrigerant led through the introduction channel into the cylinder chamber.
- the injection passage is formed in the axial direction of the rotary shaft of the compressor, and the introduction passage is formed in the radial direction. In this case, the design freedom of the position is limited in order to connect the introduction path and the injection path.
- patent document 1 is provided with the communicating pipe
- the problem to be solved by the present invention is to increase the design freedom for the communication position of the introduction passage and the injection passage of the injection flow passage to improve the manufacturability and to prevent the backflow of the refrigerant from the check valve of the injection flow passage. It is an object of the present invention to provide a compressor with high compression efficiency.
- a closed type compressor of an embodiment stores an electric motor part and a compression mechanism part in a closed case.
- the compression mechanism portion includes a cylinder having a cylinder chamber, a closing member fixed to one end face of the cylinder and closing the cylinder chamber, an end plate overlapped on the closing member, eccentrically rotating the cylinder chamber, and It has the roller which compresses the refrigerant
- the injection channel is provided with an injection channel which is provided in the closing member and one end is open to the cylinder chamber and the other end is open to the end plate side.
- the injection flow path is formed of an injection introduction pipe, an introduction path, a communication path and an injection path provided in the closing member and the end plate. Furthermore, the introduction passage and the injection passage are connected by the communication passage, and the design freedom can be increased with respect to the communication position of the introduction passage and the injection passage. Further, since the check valve is provided to open and close the communication passage side opening of the introduction passage located between the closing member and the end plate, it is possible to reliably prevent the back flow and reduce the flow passage loss.
- FIG. 1 is a longitudinal sectional view of a hermetic compressor according to a first embodiment and a configuration diagram of a refrigeration cycle of a refrigeration cycle apparatus. It is a cross-sectional view of the compression mechanism part which concerns on the embodiment. It is a longitudinal cross-sectional view of the injection flow path when the non-return valve based on the embodiment is closed. It is a longitudinal cross-sectional view of the injection circuit when the non-return valve based on the embodiment is open. It is a longitudinal cross-sectional view of the sealed compressor which concerns on 2nd Embodiment, and a refrigerating-cycle block diagram of a refrigerating-cycle apparatus.
- FIG. 7 is a plan view of the check valve as viewed in the direction of the arrows in the CC cross section of FIG. 6; It is a longitudinal cross-sectional view of the injection flow path when the non-return valve which concerns on the embodiment is open.
- FIG. 9 is a plan view of the check valve as viewed in the direction of the arrows in the CC cross section of FIG. 8;
- FIG. 1 is a longitudinal sectional view of a hermetic compressor and a configuration diagram of a refrigeration cycle of a refrigeration cycle apparatus.
- the refrigeration cycle 1 includes an enclosed compressor 2 (hereinafter referred to as a compressor), a condenser 3 that is a radiator, an expansion device 4, an evaporator 5 that is a heat absorber, and an accumulator that is attached to the compressor 2 6 are connected in order by refrigerant piping.
- the compressor 2 compresses a gas refrigerant, and the condenser 3 condenses the gas refrigerant discharged from the compressor 2 into a liquid refrigerant.
- the expansion device 4 is a decompressor that decompresses the refrigerant.
- the evaporator 5 evaporates the liquid refrigerant to make it a gas refrigerant.
- the accumulator 6 separates the gas refrigerant and the liquid refrigerant, and supplies the gas refrigerant to the compressor 2.
- an injection pipe 7 for guiding the liquid refrigerant having passed through the condenser 3 to the compressor 2 is provided, and is communicated with the injection flow path 40 provided in the compressor 2.
- the compressor 2 includes a sealed case 10, a motor unit 14 provided on the upper side of the sealed case 10, and a compression mechanism unit 17 provided on the lower side.
- the motor unit 14 has a stator 15 fixed in the sealed case 10 and a rotor 16 fixed to the rotating shaft 12.
- An eccentric part 13 is provided on the opposite side of the motor part 14 to the rotating shaft 12, and a compression mechanism part 17 is provided at a position corresponding to the eccentric part 13. Therefore, the motor unit 14 and the compression mechanism unit 17 are connected by the rotating shaft 12.
- the compression mechanism portion 17 has a cylinder 18 fixed to the sealing case 10.
- a cylinder chamber 19 is formed inside the cylinder 18.
- Main bearings 25 and a sub bearing 26 which is a closing member are disposed above and below the cylinder 18.
- the flange portion 25f of the main bearing 25 is a hollow case surrounding the periphery, and a muffler 27 forming a muffler chamber 28 is attached.
- An eccentric portion 13 of the rotary shaft 12 is located in the cylinder chamber 19, and a roller 22 is rotatably fitted to the eccentric portion 13.
- the roller 22 is arranged to be eccentrically rotated while the outer peripheral wall is in linear contact with the inner peripheral surface of the cylinder 18 via an oil film when the rotation shaft 12 rotates.
- a blade groove 24 is formed in the cylinder 18.
- a blade 23 is accommodated in the blade groove 24 so as to reciprocate, and as shown in FIG. 2, the blade 23 is pressed in such a direction that the tip end portion abuts on the outer peripheral wall of the roller 22.
- the blade 23 divides the cylinder chamber 19 into two spaces 19a and 19b.
- a suction port 20 for guiding the gas refrigerant supplied from the accumulator 6 to the cylinder chamber 19 is formed, and in the space partitioned by the blades 23, one where the suction port 20 is located is a suction chamber 19a, The other is called a compression chamber 19b. That is, as shown in FIG. 2, the roller 22 rotates counterclockwise in the planar direction. At this time, the suction port 20 is provided on the left side of the blade 23, and the left side of the cylinder chamber 19 is the suction chamber 19a, and the right side is the compression chamber 19b.
- the main bearing 25 is provided with a discharge port (not shown) and a discharge valve for opening and closing the discharge port.
- a discharge port not shown
- the discharge valve is opened, and the refrigerant in the cylinder chamber 19 is discharged to the muffler chamber 28 through the discharge port. Further, the refrigerant is discharged from the muffler chamber 28 into the closed case 10, and the compressed refrigerant discharged into the closed case 10 is discharged to the outside of the compressor 2 through the discharge pipe 11.
- the injection pipe 7 of the first embodiment guides the liquid refrigerant condensed in the condenser 4 of the refrigeration cycle 1 to the compressor 2.
- the liquid refrigerant having passed through the injection pipe 7 flows into the injection flow path 40 and is injected into the cylinder chamber 19.
- the injection flow path 40 includes an injection path 41, a communication path 42, an introduction path 49, an injection introduction pipe 70, and a check valve 44 provided in the communication path 42.
- the respective flow channels 41, 42 and 49 are provided in the end plate 30 overlapped with the sub bearing 26 closing the lower side of the cylinder chamber 19 and the lower side of the flange portion 26 f of the sub bearing 26 and fixed by the fastening bolt 31 It is done.
- the injection pipe 7 is provided with a control valve 8 for reducing the pressure of the refrigerant introduced from the downstream side of the condenser 4 and adjusting the injection flow rate.
- the injection passage 41 is provided in the sub bearing 26 and has a first opening 51 opened to the cylinder chamber 19 and a second opening 52 opened to the end plate 30 side. As shown in FIG. 2, the first opening 51 for injecting the liquid refrigerant at an intermediate pressure into the cylinder chamber 19 is provided at a position opened and closed by the lower surface of the roller 22 provided in the cylinder chamber 19.
- the communication passage 42 is formed by the end plate 30 and the auxiliary bearing 26.
- a groove 43 is provided on the upper end surface of the end plate 30, and the groove 43 becomes a communication passage 42 by overlapping the end plate 30 and the sub bearing 26.
- the communication passage 42 is in communication with the injection passage 41 by the second opening 52 of the injection passage 41.
- the introduction passage 49 is provided horizontally in the radial direction of the sub bearing 26 and has on one end side a third opening 53 opened in the communication passage 42 in the axial direction, and the other end 54 is the outer periphery of the sub bearing 26 It is open to the surface.
- An injection introduction pipe 70 communicating with the outside of the sealed case 10 is connected to the other end 54 of the introduction path 49, and the injection pipe 7 is connected to the injection introduction pipe 70 outside the sealed case 10.
- the cross-sectional area of the third opening 53 of the introduction passage 49 is formed larger than the cross-sectional area of the first opening 51 of the injection passage 41.
- the check valve 44 opens and closes the third opening 53 of the introduction passage 49 from the communication passage 42 side.
- the check valve 44 of the first embodiment is a disk-shaped free valve, and is biased by a spring 46.
- the valve seat surface 45 a in contact with the sub bearing 26 of the check valve 44 is located on the same plane as the joint surface of the sub bearing 26 and the end plate 30.
- the check valve 44 is pressed by the spring 46 in a direction to close the third opening 53.
- FIG. 3 shows the injection channel 40 when the check valve 44 closes the third opening 53 of the introduction passage 49
- FIG. 4 shows the case where the check valve 44 opens the third opening 53.
- the check valve 44 opens and closes the third opening 53 of the introduction passage 49 by the pressure difference between the introduction passage 49 and the communication passage 42.
- the communication passage 42 is in communication with the cylinder chamber 19 via the injection passage 41. That is, when the pressure in the compression chamber 19 b is larger than the pressure in the introduction passage 49, the check valve 44 closes the third opening 53 of the introduction passage 49 and the pressure in the compression chamber 19 b is smaller than the pressure in the introduction passage 49.
- the check valve 44 is pushed out by the refrigerant pressure on the introduction passage 49 side, the third opening 53 of the introduction passage 49 is opened.
- the rotor 16 is rotated by energizing the motor unit 14 of the compressor 2.
- the compression mechanism unit 17 is driven via the rotation shaft 12.
- the compression mechanism portion 17 is driven, the gas refrigerant separated by the accumulator 6 is sucked into the suction chamber 19 a of the cylinder chamber 19.
- the rotation of the roller 22 in the cylinder chamber 19 causes the first opening 51 of the injection passage 41 formed in the cylinder 18 to open at the same time when the roller 22 passes the position of the suction port 20.
- the gas refrigerant sucked from the suction port 20 is compressed by the rotation of the roller 22, and the liquid refrigerant having an intermediate pressure is compressed from the first opening 51 of the injection passage 41 opened and closed by the rotation of the roller 22
- the refrigerant is injected into 19 b and evaporated in the compression chamber 19 b to cool the refrigerant in the compression chamber 19 b, and the refrigerant is discharged from the discharge port together with the refrigerant sucked from the suction port 20.
- the refrigerant discharged from the discharge port is discharged to the outside of the compressor 2 through the muffler chamber 28, and the refrigerant condensed in the condenser 3 is introduced to the compressor 2 through the branched injection pipe 7.
- the liquid refrigerant introduced from the injection pipe 7 first flows into the introduction path 49 via the injection introduction pipe 70 of the injection flow path 40. Then, it flows toward the third opening 53 of the introduction passage 49, and the third opening 53 of the introduction passage 49 is normally closed by the check valve 44.
- the check valve 44 When the pressure in the introduction passage 49 becomes larger than the pressure in the cylinder chamber 19, the check valve 44 is pressed to the communication passage 42 side and the third opening 53 of the introduction passage 49 is opened, the liquid refrigerant is It flows into the communication passage 42.
- the check valve 44 closes the third opening 53.
- the liquid refrigerant flowing into the communication passage 42 flows into the injection passage 41 through the second opening 52 of the injection passage 41.
- the liquid refrigerant introduced into the injection passage 41 is injected into the cylinder chamber 19 when the first opening 51 of the injection passage 41 opened and closed by the lower surface of the roller 22 rotating in the cylinder chamber 19 is opened. Ru.
- the injection flow path 40 of the first embodiment includes the injection path 41 and the introduction path 49 in the sub bearing 26 and the communication path 42 in the end plate 30, but the combination of the sub bearing 26 and the end plate 30
- the communication passage 42 is formed, and the third opening 53 of the introduction passage 49 is opened in the axial direction, and the valve seat surface 45a of the check valve 44 provided in the communication passage 42 is a joint between the sub bearing 26 and the end plate 30. It may be the same plane as the plane.
- the groove portion 43 is provided in the flange portion 26 f of the sub bearing 26, and the end plate 30 is fixed to form the communication passage 42.
- the introduction passage 49 is formed in the end plate 30, the third opening 53 is opened in the axial direction, and the valve seat 45 of the check valve 44 is in contact with the joint surface of the end plate 30 with the sub bearing 26. It is possible to open and close from the upper side of the third opening 53 on the same plane.
- the injection flow path 40 is formed of the injection introduction pipe 70, the introduction path 49, the communication path 42 and the injection path 41. Since these flow paths are provided in the sub bearing 26 and the end plate 30, and the introduction path 49 and the injection path 41 are connected by the communication path 42, design freedom is provided for the communication position of the introduction path 49 and the injection path 41. It can be enhanced.
- the cross sectional area of the third opening 53 of the introduction channel 49 is formed larger than the cross sectional area of the first opening 51 of the injection channel 41 for the introduction channel 49 and the injection channel 41.
- the flow rate on the side of the introduction passage 49 of the liquid refrigerant is increased to facilitate the injection into the cylinder chamber 19.
- the cross section of the third opening 53 of the introduction path 49 the flow path resistance by the check valve 44 of the liquid refrigerant can be reduced, so that the flow path loss can be reduced.
- the check valve 44 for preventing the backflow of the compressed refrigerant from the cylinder chamber 19 is provided in the communication passage 42 in the axial direction so as to open and close the third opening 53 of the introduction path 49. It is possible to prevent the flow path loss.
- the end plate 30 is fixed to the sub bearing 26 in order to form the communication passage 42, a seal is required on the joint surface thereof, so the surface roughness is small and formed with high accuracy. . If the valve seat surface 45a of the check valve 44 is provided on this joint surface, the sealing performance can be enhanced. Further, since the auxiliary bearing 26 and the end plate 30 are positioned and fixed, providing the spring 46 for restricting the movement of the check valve 44 on the end plate 30 can prevent the check valve 44 from being deviated from the opening / closing surface.
- the check valve 44 is biased by the spring 46 in the direction of closing the third opening 53 of the introduction passage 49.
- the spring 46 can reliably prevent the backflow from the cylinder chamber 19 to the introduction passage 49.
- a guide not shown may be provided on the valve seat surface. This guide can prevent the check valve 44 from shifting from the third opening of the introduction passage.
- the compressor 2 of the second embodiment will be described based on FIGS. 5 to 9. Elements that are the same as or similar to those of the first embodiment are given the same reference numerals, and redundant descriptions will be omitted as appropriate.
- the compressor 2 according to the second embodiment has two cylinders 18A and 18B in the compression mechanism 17.
- the A cylinder 18A is located on the lower side
- the B cylinder 18B is located on the upper side.
- a partition plate 32 is provided which partitions the two cylinders 18A and 18B and closes the cylinder chamber 19A of the A cylinder 18A and the cylinder chamber 19B of the B cylinder 18B.
- the partition plate 32 is formed by overlapping two partition plate members 32A and 32B.
- the injection channel 40 is provided in the partition plate 32. That is, the partition plate 32 functions as a closing member closing the cylinder chamber 19B of the B cylinder 18B and an end plate closing the cylinder chamber 19A of the A cylinder 18A.
- the partition plate member 32B is provided with the injection passage 41 for injecting the liquid refrigerant into the cylinder chamber 19B
- the partition plate member 32A is provided with the auxiliary injection passage 50 for injecting the liquid refrigerant into the cylinder chamber 19A.
- the injection passage 41 forms a first opening 51 opening to the cylinder chamber 19B of the B cylinder 18B and a second opening 52 opening to the communication passage 42.
- One end of the auxiliary injection passage 50 forms a fifth opening that opens into the cylinder chamber 19A of the A cylinder 18A, and the other end opens in the communication passage 42.
- the communication passage 42 is formed by overlapping the groove 43 provided in the partition plate member 32B and the end face of the partition plate member 32A.
- the introduction passage 49 is horizontally provided in the partition plate member 32A in the radial direction, and has the third opening 53 of the introduction passage 42 opened in the axial direction in the communication passage 42 at one end side, and the other end 54 is a partition plate member It is open at the outer peripheral surface of 32A.
- An injection introduction pipe 70 communicating with the outside of the sealed case 10 is connected to the other end 54 of the introduction path 49, and the injection pipe 7 is connected to the injection introduction pipe 70 outside the sealed case 10.
- the communication passage 4 is formed on the upper side of the third opening 53 of the introduction passage 49.
- a check valve 44 for opening and closing the third opening 53 of the introduction passage 49 is provided on the communication passage 42 side.
- the check valve 44 according to the second embodiment contacts the valve seat 45 by gravity and closes the third opening 53 of the introduction passage 49.
- the biasing member such as the spring 46 can be omitted.
- a biasing member such as the spring 46 may be provided.
- a guide wall 47 is formed to guide the check valve 44 so as not to be displaced from the position of the third opening 53 of the introduction passage 49.
- a check valve back pressure portion 48 is provided in which the depth of the guide wall 47 is smaller than the depth of the communication passage 42 so that the check valve 44 does not stick to the upper portion of the guide wall 47.
- the liquid refrigerant flowing through the injection pipe 7 passes through the injection introduction pipe 70, the introduction path 49, the communication path 42, the injection path 41, and the auxiliary injection path 50 in the same manner as in the first embodiment. It injects into each cylinder chamber 19A, 19B.
- the check valve 44 opens and closes the third opening 53 of the introduction passage 49 by the difference between the pressure of the introduction passage 49 and the gravity and the total pressure of the cylinders 18A and 18B.
- FIG. 7 is a plan view of the non-return valve 44 seen in the direction of the arrows in the CC cross section of FIG.
- FIG. 9 is a plan view of the check valve 44 seen in the direction of the arrow in the CC cross section of FIG.
- a guide wall 47 for guiding the check valve 44 so as to close the third opening 53 of the introduction passage 49 without deviation is formed in the partition plate member 32B. As shown in FIG. 9, the guide wall 47 is formed slightly larger in diameter than the check valve 44.
- the injection channel 40 is formed in the partition plate 32 formed of the two partition plate members 32A and 32B.
- the liquid refrigerant can be supplied to the cylinder chambers 19A and 19B.
- the check valve 44 is provided at the third opening 53 of the introduction passage 49 before the liquid refrigerant flowing into the injection passage 40 is branched into the injection passage 41 and the auxiliary injection passage 50. Backflow from each cylinder chamber 19A, 19B can be prevented.
- the injection flow path 40 for guiding the liquid refrigerant to the cylinder chamber 19 of the compression mechanism 17 includes an injection introduction pipe, an introduction path 49, and an injection path 41; It is comprised from the introduction path 49 and the communicating path 42 which connects the injection path 41.
- the communication passage 42 is formed by combining two members of the closing members 26, 32A and the end plates 30, 32B, and the introducing passage 49 can be formed in either the closing members 26, 32A or the end plates 30, 32B. It is possible to increase the degree of freedom in design of the communication position between the introduction path 49 and the injection path 41.
- the check valve 44 provided in the communication passage 42 opens and closes the third opening 53 of the introduction passage 49 opened in the axial direction of the rotary shaft 12, and the valve seat surface 45a has a small surface roughness and is formed with high accuracy. Since the closing members 26, 32A and the end plates 30, 32B are provided in the same plane, the sealing performance of the valve seat surface 45a can be enhanced. Therefore, the backflow of the refrigerant from the check valve 44 can be prevented.
- the check valve 44 performs the opening and closing operation with high accuracy by adopting the configuration in which the check valve 44 in the first embodiment includes the spring 46 and the configuration in which the guide wall 47 in the second embodiment. be able to.
- the check valve 44 according to the embodiment is described for the check valve 44 including a free valve, a reed valve may be used.
- the cross-sectional area of the third opening 53 of the introduction channel 49 is formed larger than the cross-sectional area of the first opening 51 of the injection channel 41 for the introduction channel 49 and the injection channel 41.
- the compressor 2 according to the embodiment can be applied even in the case of having a plurality of cylinders 19, and is configured to overlap the two partition plate members 32A and 32B in the axial direction and provide the injection flow path 40 in each of them. With such a structure, it is possible to prevent the backflow from the plurality of cylinder chambers 19 with one check valve 44, so that the structure can be simplified, and the manufacturability is high, and the low cost compressor 2 can be obtained. .
- the compressor 2 of the embodiment is a rotary compressor using the blade 23 and the roller 22
- the injection flow passage 40 of the embodiment is formed in a swing type compressor in which the blade 23 and the rotor 22 are integrated. The same effect can be obtained in the case of
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
特許文献2は、インジェクション導入路の途中にスライド弁を精度よく挿入する必要があり、製造性が極めて悪い。
(第1の実施形態)
第1の実施形態の密閉型圧縮機について、図1乃至図4を参照して説明する。図1は、密閉型圧縮機の縦断面図及び冷凍サイクル装置の冷凍サイクル構成図である。
まず、冷凍サイクル1を説明する。冷凍サイクル1は、密閉型圧縮機2(以下、圧縮機という。)と、放熱器である凝縮器3と、膨張装置4と、吸熱器である蒸発器5と、圧縮機2に取り付けられるアキュームレータ6が冷媒配管で順に接続される。圧縮機2はガス冷媒を圧縮し、凝縮器3は圧縮機2から吐出されるガス冷媒を凝縮して液冷媒にする。膨張装置4は冷媒を減圧する減圧器である。蒸発器5は液冷媒を蒸発してガス冷媒にする。アキュームレータ6はガス冷媒と液冷媒とを分離し、ガス冷媒を圧縮機2に供給する。第1の実施形態の冷凍サイクル1では、凝縮器3を通った液冷媒を圧縮機2へ導くためのインジェクション管7が設けられ、圧縮機2に備えられるインジェクション流路40と連通する。
さらに、シリンダ室19からの圧縮冷媒の逆流を防ぐ逆止弁44が、導入路49の第3の開口部53を開閉するように、連通路42に軸方向に備えられるので、確実に逆流を防ぐことができ、流路損失を低減できる。
第2の実施形態の圧縮機2について図5乃至図9に基づいて説明する。第1の実施形態と同一又は類似する要素には同一の符号を付し、重複する説明は適宜省略する。
第2の実施形態の圧縮機2は、圧縮機構部17に2つのシリンダ18A,18Bを有し、下側にAシリンダ18Aが位置し、上側にBシリンダ18Bが位置している。2つのシリンダ18A,18Bの間には、2つのシリンダ18A,18Bを仕切り、Aシリンダ18Aのシリンダ室19Aと、Bシリンダ18Bのシリンダ室19Bとを閉塞する仕切り板32が設けられている。仕切り板32は、2つの仕切り板部材32A,32Bを重ねて形成されている。
Claims (9)
- 密閉ケース内に電動機部と圧縮機構部を収容し、
前記圧縮機構部は、前記電動機部により偏心部を有する回転軸を介して駆動されるとともに、
シリンダ室を有するシリンダと、
前記シリンダの一方の端面に固定され、前記シリンダ室を閉塞する閉塞部材と、
前記閉塞部材に重ねられる端板と、
前記シリンダ室内を偏心回転するとともに、前記シリンダ室に流入した冷媒を圧縮するローラと、
前記シリンダ室内に冷媒を供給するインジェクション流路と、を有し、
前記インジェクション流路は、前記閉塞部材に設けられ一端が前記シリンダ室に開口し、他端が前記端板側に開口する注入路と、
前記閉塞部材と前記端板との間に形成され、前記注入路と連通する連通路と、
前記閉塞部材あるいは前記端板のどちらか一方に設けられ、一端側が前記連通路に前記回転軸の軸方向から開口し、他端に前記密閉ケース外部に連通するインジェクション導入管が接続される導入路と、
前記導入路の連通路側開口部を開閉し、前記シリンダ室から前記導入路への冷媒の流れを阻止する逆止弁と、から構成される密閉型圧縮機。 - 前記導入路の前記連通路側開口部の断面積が、前記注入路のシリンダ室側開口部の断面積より大きく形成されている、請求項1に記載の密閉型圧縮機。
- 前記逆止弁の弁座面が、前記閉塞部材と前記端板の接合面と同一面である請求項1に記載の密閉型圧縮機。
- 前記逆止弁は前記軸方向に動いて前記導入路の連通路側開口部を開閉する請求項1に記載の密閉型圧縮機。
- 前記逆止弁は、付勢部材により前記導入路の連通路側開口部を塞ぐ方向に押圧されている請求項1に記載の密閉式圧縮機。
- 前記逆止弁が円板状であるとともに、前記連通路に前記逆止弁が前記導入路の連通路側開口部を塞ぐとき、前記逆止弁が前記連通路側開口部の位置からずれないようにガイドするガイド壁が形成される請求項1に記載の密閉型圧縮機。
- 前記圧縮機構部は、前記シリンダを複数有し、
前記複数のシリンダの間に、一方のシリンダの前記シリンダ室を閉塞する前記閉塞部材と、他方のシリンダの前記シリンダ室を閉塞する前記端板及び、前記インジェクション流路を備える請求項1乃至6に記載の密閉型圧縮機。 - 前記端板に、一端が前記他方のシリンダの前記シリンダ室に開口し、他端が前記連通路に開口する補助注入路を設けた請求項7に記載の密閉型圧縮機。
- 請求項1乃至請求項8のいずれかに記載の密閉型圧縮機と、前記密閉型圧縮機に接続される放熱器と、前記放熱器に接続される膨張装置と、前記膨張装置と前記密閉型圧縮機の間に接続される吸熱器を備える冷凍サイクル装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/032046 WO2019049226A1 (ja) | 2017-09-06 | 2017-09-06 | 密閉型圧縮機及び冷凍サイクル装置 |
CN201780094614.2A CN111065826B (zh) | 2017-09-06 | 2017-09-06 | 密闭型压缩机及冷冻循环装置 |
DE112017007976.4T DE112017007976B4 (de) | 2017-09-06 | 2017-09-06 | Hermetischer Verdichter und Kühlkreislaufeinrichtung |
JP2019540171A JP6886522B2 (ja) | 2017-09-06 | 2017-09-06 | 密閉型圧縮機及び冷凍サイクル装置 |
GB2002843.7A GB2579937B (en) | 2017-09-06 | 2017-09-06 | Hermetic compressor and refrigeration cycle apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/032046 WO2019049226A1 (ja) | 2017-09-06 | 2017-09-06 | 密閉型圧縮機及び冷凍サイクル装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019049226A1 true WO2019049226A1 (ja) | 2019-03-14 |
Family
ID=65633675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/032046 WO2019049226A1 (ja) | 2017-09-06 | 2017-09-06 | 密閉型圧縮機及び冷凍サイクル装置 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP6886522B2 (ja) |
CN (1) | CN111065826B (ja) |
DE (1) | DE112017007976B4 (ja) |
GB (1) | GB2579937B (ja) |
WO (1) | WO2019049226A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220136509A1 (en) * | 2020-10-29 | 2022-05-05 | Bascom Hunter Technologies, Inc. | Refrigeration system having a compressor driven by a magnetic coupling |
WO2024029566A1 (ja) * | 2022-08-04 | 2024-02-08 | 三菱重工サーマルシステムズ株式会社 | ロータリー圧縮機 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6425487U (ja) * | 1987-08-04 | 1989-02-13 | ||
JP2017101592A (ja) * | 2015-12-01 | 2017-06-08 | ダイキン工業株式会社 | スクロール圧縮機 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62173585A (ja) | 1986-01-27 | 1987-07-30 | 三洋電機株式会社 | 硬貨識別装置 |
JPS62173585U (ja) | 1986-04-23 | 1987-11-04 | ||
JP5760836B2 (ja) | 2011-08-10 | 2015-08-12 | ダイキン工業株式会社 | ロータリ圧縮機 |
JP6355453B2 (ja) | 2014-06-27 | 2018-07-11 | 三菱電機株式会社 | スクロール圧縮機 |
CN105065273B (zh) | 2015-08-24 | 2017-06-13 | 广东美芝制冷设备有限公司 | 旋转式压缩机和具有其的冷冻循环装置 |
CN105422462B (zh) | 2015-12-10 | 2018-04-10 | 安徽美芝精密制造有限公司 | 旋转式变容压缩机 |
CN108474376B (zh) | 2016-01-29 | 2019-07-19 | 三菱电机株式会社 | 涡旋压缩机及热泵装置 |
CN205858676U (zh) * | 2016-07-28 | 2017-01-04 | 广东美芝制冷设备有限公司 | 双缸压缩机 |
-
2017
- 2017-09-06 JP JP2019540171A patent/JP6886522B2/ja active Active
- 2017-09-06 WO PCT/JP2017/032046 patent/WO2019049226A1/ja active Application Filing
- 2017-09-06 GB GB2002843.7A patent/GB2579937B/en active Active
- 2017-09-06 CN CN201780094614.2A patent/CN111065826B/zh active Active
- 2017-09-06 DE DE112017007976.4T patent/DE112017007976B4/de active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6425487U (ja) * | 1987-08-04 | 1989-02-13 | ||
JP2017101592A (ja) * | 2015-12-01 | 2017-06-08 | ダイキン工業株式会社 | スクロール圧縮機 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220136509A1 (en) * | 2020-10-29 | 2022-05-05 | Bascom Hunter Technologies, Inc. | Refrigeration system having a compressor driven by a magnetic coupling |
US11867181B2 (en) * | 2020-10-29 | 2024-01-09 | Bascom Hunter Technologies, Inc. | Refrigeration system having a compressor driven by a magnetic coupling |
WO2024029566A1 (ja) * | 2022-08-04 | 2024-02-08 | 三菱重工サーマルシステムズ株式会社 | ロータリー圧縮機 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2019049226A1 (ja) | 2020-08-27 |
DE112017007976B4 (de) | 2024-04-18 |
DE112017007976T5 (de) | 2020-06-04 |
GB202002843D0 (en) | 2020-04-15 |
CN111065826B (zh) | 2022-03-18 |
JP6886522B2 (ja) | 2021-06-16 |
CN111065826A (zh) | 2020-04-24 |
GB2579937B (en) | 2022-05-18 |
GB2579937A (en) | 2020-07-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5774134B2 (ja) | ベーン型圧縮機 | |
WO2019202976A1 (ja) | 密閉型圧縮機および冷凍サイクル装置 | |
WO2019049226A1 (ja) | 密閉型圧縮機及び冷凍サイクル装置 | |
JP6083408B2 (ja) | ベーン型圧縮機 | |
JP2015175258A (ja) | 回転式圧縮機及び冷凍サイクル装置 | |
WO2016031129A1 (ja) | 回転式圧縮機及び冷凍サイクル装置 | |
CN109154297B (zh) | 密闭型压缩机以及冷冻循环装置 | |
JP6978359B2 (ja) | 密閉型圧縮機及び冷凍サイクル装置 | |
JP2005207306A (ja) | 2気筒回転圧縮機 | |
JP6267360B2 (ja) | 回転式圧縮機及び冷凍サイクル装置 | |
WO2013183545A1 (ja) | 気体圧縮機 | |
WO2015025449A1 (ja) | 多段圧縮機及び冷凍サイクル装置 | |
JP6171482B2 (ja) | ベーン型圧縮機 | |
CN111788391B (zh) | 旋转式压缩机 | |
JP2013204555A (ja) | タンデム式ベーン型圧縮機 | |
WO2016110982A1 (ja) | 多気筒密閉型圧縮機 | |
JP6467311B2 (ja) | 圧縮機及び冷凍サイクル装置 | |
JP2016037906A (ja) | 高圧ドーム型圧縮機 | |
CN116378957A (zh) | 多级旋转式压缩机以及冷冻循环装置 | |
JP6430904B2 (ja) | 圧縮機及び冷凍サイクル装置 | |
WO2022269752A1 (ja) | ロータリ圧縮機および冷凍サイクル装置 | |
JP6457303B2 (ja) | 回転式圧縮機、および冷凍サイクル装置 | |
JP2007211672A (ja) | ロータリ圧縮機 | |
JP2005351233A (ja) | 気体圧縮機 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17924749 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2019540171 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 202002843 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20170906 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17924749 Country of ref document: EP Kind code of ref document: A1 |