WO2019119739A1 - Compressor and refrigeration circulation device - Google Patents

Compressor and refrigeration circulation device Download PDF

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Publication number
WO2019119739A1
WO2019119739A1 PCT/CN2018/090667 CN2018090667W WO2019119739A1 WO 2019119739 A1 WO2019119739 A1 WO 2019119739A1 CN 2018090667 W CN2018090667 W CN 2018090667W WO 2019119739 A1 WO2019119739 A1 WO 2019119739A1
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WIPO (PCT)
Prior art keywords
expansion
refrigerant
compressor
cylinder
assembly
Prior art date
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PCT/CN2018/090667
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French (fr)
Chinese (zh)
Inventor
胡余生
魏会军
邹鹏
杨欧翔
余冰
吴健
Original Assignee
珠海格力节能环保制冷技术研究中心有限公司
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Publication of WO2019119739A1 publication Critical patent/WO2019119739A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations 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
    • F04C23/02Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C13/00Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01C13/04Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby for driving pumps or compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00Fluid
    • F04C2210/26Refrigerants with particular properties, e.g. HFC-134a
    • F04C2210/261Carbon dioxide (CO2)

Definitions

  • the invention relates to the technical field of compressor refrigeration, and in particular to a compressor and a refrigeration cycle device.
  • the refrigerants commonly used in the refrigeration industry are mainly CFCs and HCFCs.
  • CFC and HCFC refrigerants have a destructive effect on the ozone layer and a greenhouse effect.
  • the critical temperature of carbon dioxide is low (31.1 °C) and the critical pressure is high (7.37 MPa).
  • the main form is a transcritical refrigeration cycle, and the coefficient of performance is 20% lower than that of the conventional refrigerant cycle. Above; the main reason is that the operating pressure and pressure difference of carbon dioxide are both high and the throttling loss is greater.
  • One of the technical paths is to improve the performance of the compressor in order to improve the performance of the circulating refrigeration.
  • the prior art mainly discloses the following two types of compressors using carbon dioxide as a refrigerant.
  • the first type of compressor is a rolling rotor type medium pressure carbon dioxide compressor using a two-stage principle.
  • the compressor has two cylinders, one of which is a primary compression cylinder and the other is a secondary compression. Cylinder; the low-pressure refrigerant first flows into the first-stage compression cylinder at the bottom of the compressor, is compressed to the intermediate pressure under the action of the compression structure, is directly discharged into the compressor casing, and then cooled in the intercooler and flows into the upper part of the compressor.
  • the secondary cylinder the refrigerant is compressed to a high pressure in the secondary cylinder and discharged.
  • the second type of compressor is a vortex rotor compressor with an expansion mechanism
  • the expansion mechanism is in the form of a vortex
  • the compression mechanism is in the form of a rolling rotor
  • the vortex and the rotor portion are coaxially designed to expand the refrigerant flowing into the expansion mechanism and drive together with the motor.
  • the spindle rotates, thereby driving the compression mechanism to compress, thereby recovering power during the refrigeration cycle and utilizing it during the compression process, thereby improving the refrigeration cycle performance.
  • the present invention provides a compressor and a refrigeration cycle device capable of performing multi-stage compression of a refrigerant and expanding and recovering expansion work of the refrigerant after compression, and the main purpose is to reduce the pressure difference of each stage. Reduce the leakage of refrigerant and the power consumption of the compressor to improve the coefficient of performance of the compressor and refrigeration cycle.
  • the present invention mainly provides the following technical solutions:
  • an embodiment of the present invention provides a compressor, wherein the compressor includes:
  • a compression assembly disposed in the housing, and the compression assembly is drivingly coupled to the drive assembly for performing multi-stage compression processing of the refrigerant under the driving of the drive assembly;
  • An expansion assembly disposed in the housing, and the expansion assembly is coupled to the drive assembly; wherein the expansion assembly is configured to expand a refrigerant processed by the compression assembly.
  • the compressor further includes a first cooler; wherein
  • the refrigerant compressed by the compression assembly is first cooled by the first cooler, and then expanded by the expansion assembly.
  • the compression component comprises:
  • a primary compression structure wherein the primary compression structure performs a first-stage compression treatment on the refrigerant discharged from the evaporator;
  • the secondary compression structure performs a secondary compression treatment on the primary refrigerant; wherein the primary refrigerant includes a refrigerant that is first-stage compressed by the primary compression structure.
  • the compressor includes a supplemental air passage for feeding a gaseous refrigerant into the compressor;
  • the primary refrigerant further includes a refrigerant supplemented by the supplementary gas passage.
  • the compressor further includes a second cooler; wherein
  • the primary refrigerant is first cooled by the second cooler and then subjected to secondary compression treatment by the secondary compression structure.
  • the primary compression structure comprises:
  • first stage cylinder wherein the first stage cylinder is provided with a first air inlet and a first air outlet; wherein the first air inlet is used to communicate with an outlet of the evaporator;
  • first-stage roller wherein the first-stage roller is disposed in the first-stage cylinder, and the first-stage roller is subjected to a first-stage compression treatment of the refrigerant by the first-stage cylinder under the driving of the driving component;
  • a first-stage cavity that communicates with the first exhaust port to discharge the first-stage compressed refrigerant into the first-stage cavity.
  • the secondary compression structure comprises:
  • a second cylinder wherein the second cylinder is provided with a second suction port and a second exhaust port; wherein the second intake port draws the primary refrigerant into the secondary cylinder;
  • a secondary roller wherein the secondary roller is disposed in the secondary cylinder, and the secondary roller is driven by the driving component to cooperate with the secondary cylinder to perform secondary compression treatment on the primary refrigerant;
  • the secondary cavity being in communication with the second exhaust port to discharge secondary compressed refrigerant into the secondary cavity.
  • the volume ratio of the primary cylinder to the secondary cylinder is 0.5-1.35.
  • the housing is provided with an exhaust line, and the exhaust line is in communication with the inner cavity of the housing;
  • the first stage cavity is in communication with the inner cavity of the housing when the compressor includes the second cooler, and the exhaust line is for communicating with the inlet of the second cooler, and the outlet of the second cooler is a second suction port on the secondary cylinder is connected; or
  • the first stage cavity is in communication with a second suction port on the secondary cylinder, the secondary cavity is in communication with a lumen of the housing, and the exhaust line is configured to communicate with the first cooling Import of the device.
  • the expansion assembly comprises:
  • the first expansion cylinder is provided with a third suction port and a third exhaust port;
  • first roller being disposed in the first expansion cylinder
  • the third suction port is configured to suck the refrigerant subjected to the multi-stage compression treatment by the compression assembly into the first expansion cylinder; the first roller is used to be driven by the drive assembly Performing an expansion treatment on the refrigerant sucked into the first expansion cylinder; the refrigerant after the expansion treatment is discharged from the third exhaust port;
  • the third suction port is connected to an outlet of the first cooler.
  • the expansion assembly further includes a first cavity, wherein
  • the first cavity is in communication with the third exhaust port, and the first cavity is provided with a fourth exhaust port to discharge the refrigerant after the expansion assembly expansion process to the compressor connection On the hot part.
  • the ratio of the suction volume to the expansion volume of the first expansion cylinder is 2.0-5.55.
  • the expansion component further comprises:
  • the second expansion cylinder is provided with a fourth suction port and a fifth exhaust port; wherein the fourth intake port is in communication with the third exhaust port;
  • the second roller being disposed in the second expansion cylinder, and the second roller being drivingly coupled to the drive assembly.
  • the drive assembly includes a crankshaft and a drive structure for driving the operation of the crankshaft;
  • the drive structure includes a motor stator and a motor rotor;
  • the compression assembly and the expansion assembly are assembled on the crankshaft
  • the refrigerant in the cavity of the casing passes through the driving structure before being sucked into the exhaust pipe to cool and cool the driving structure.
  • a baffle plate is mounted on the crankshaft at a position higher than the drive structure for separating the refrigerating oil.
  • the compression assembly is located below the drive structure
  • the expansion assembly is located above the drive structure; or the expansion assembly is located below the drive structure.
  • embodiments of the present invention provide a refrigeration cycle apparatus, wherein the refrigeration cycle apparatus includes the compressor described above.
  • the refrigeration cycle device further comprises:
  • An evaporator an inlet of the evaporator for communicating with the expansion assembly, an outlet of the evaporator for communicating the compression assembly.
  • the refrigeration cycle device when the compressor includes an air supply passage, the refrigeration cycle device further includes an economizer; wherein
  • An inlet of the economizer is in communication with the expansion assembly
  • the economizer is provided with a first outlet communicating with an inlet of the evaporator for conveying liquid refrigerant to the evaporator, and a second outlet communicating with the supplemental passage It is used to charge the flashed gaseous refrigerant into the compressor through the air supply passage.
  • an expansion mechanism is provided on the pipeline communicating between the economizer and the evaporator for reducing the power of the refrigerant operation.
  • the compressor and the refrigeration cycle apparatus of the present invention have at least the following beneficial effects:
  • the compressor provided in this embodiment can perform multi-stage compression treatment on the refrigerant, can reduce the pressure difference of each stage, reduce the leakage amount, and improve the volumetric efficiency of the compressor; and simultaneously expand and compress the compressed refrigerant through the expansion component, and The drive assembly is driven by the power generated by the expansion of the refrigerant to drive the compression assembly, thereby reducing compressor power consumption.
  • multi-stage compression treatment of the refrigerant, expansion treatment of the compressed refrigerant, and absorption of expansion work synergize with the performance of the compressor and the refrigeration cycle device, so that the coefficient of performance of the compressor and the refrigeration cycle device high.
  • the compressor provided by the embodiment of the present invention further includes a first cooler disposed outside the casing; wherein the refrigerant compressed by the compression component is first cooled by the first cooler and then expanded by the expansion component.
  • This arrangement can avoid the high temperature of the compressor body, protect the compressor, and improve the compression efficiency.
  • the compressor provided by the embodiment of the present invention further includes a supplemental air passage for supplementing the gas refrigerant into the compressor, and the compressor is provided with a function of supplementing gas and increasing the capacity, thereby further increasing the volume of the compressor. Efficiency and cooling capacity.
  • the compressor provided by the embodiment of the present invention further includes a second cooler disposed outside the casing; wherein the primary refrigerant is first cooled by the second cooler and then subjected to the secondary compression treatment by the secondary compression structure; This arrangement can avoid the high temperature of the compressor body and protect the compressor.
  • the volume ratio of the primary cylinder and the secondary cylinder in the compression assembly provided by the embodiment of the present invention is 0.5-1.35, and the ratio of the suction volume to the expansion volume of the first expansion cylinder is 2.0-5.55.
  • the analysis and verification structure, the volume ratio of the primary cylinder and the secondary cylinder is set to 0.5-1.35, and the ratio of the suction volume to the expansion volume of the first expansion cylinder is 2.0-5.55, which is beneficial to improve the performance of the compressor.
  • the compressor and the refrigeration cycle device provided by the embodiments of the present invention are two-stage compression zone inter-stage gas-enhanced structure, which can reduce the pressure difference of each stage, reduce the leakage amount, and improve the compressor compared with the single-stage compression.
  • FIG. 1 is a schematic structural view of a first refrigeration cycle apparatus according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a second compressor provided by an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a third compressor according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a fourth compressor according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of a fifth compressor according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a sixth compressor according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural view of a seventh compressor provided by an embodiment of the present invention.
  • FIG. 8 is a schematic structural view of an eighth compressor according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural view of a ninth compressor provided by an embodiment of the present invention.
  • Figure 10 is a schematic structural view of a tenth compressor provided by an embodiment of the present invention.
  • Figure 11 is a schematic structural view of an eleventh compressor provided by an embodiment of the present invention.
  • Figure 12 is a simplified structural view of the refrigeration cycle apparatus shown in Figure 1;
  • Figure 13 is a simplified structural view of a second refrigeration cycle apparatus according to an embodiment of the present invention.
  • Figure 14 is a simplified structural view of a third refrigeration cycle apparatus according to an embodiment of the present invention.
  • Figure 15 is a simplified structural view of a fourth refrigeration cycle apparatus according to an embodiment of the present invention.
  • Figure 16 is a collapsed view of a refrigeration cycle apparatus according to an embodiment of the present invention.
  • the embodiment provides a compressor.
  • the compressor of the embodiment includes: a casing (in which the casing is composed of an upper cover 11, a shell 12 and a lower cover 13) and is disposed in the casing.
  • Drive component 2 compression assembly and expansion assembly 4.
  • the compression assembly is drivingly coupled to the driving assembly 2 for performing multi-stage compression processing on the refrigerant under the driving of the driving assembly 2 (the multi-stage compression processing herein refers to: the gas starts from the suction compressor, after many times (at least twice) boost to achieve the required working pressure).
  • the expansion assembly 4 is coupled to the drive assembly 2; wherein the expansion assembly 4 is used to expand the refrigerant subjected to compression treatment by the compression assembly, and the drive assembly 2 can drive the compression assembly together with the power generated by the expansion assembly 4.
  • the compressor provided in this embodiment can perform multi-stage compression treatment on the refrigerant, can reduce the pressure difference of each stage, reduce the leakage amount, and improve the volumetric efficiency of the compressor; and simultaneously expand and compress the compressed refrigerant through the expansion component, and The power generated by the expansion of the drive assembly and the refrigerant drives the compression assembly together, thereby reducing compressor power consumption.
  • multi-stage compression treatment of the refrigerant, expansion treatment of the compressed refrigerant, and absorption of expansion work synergize with the performance of the compressor and the refrigeration cycle device, so that the coefficient of performance of the compressor and the refrigeration cycle device high.
  • the compressor further includes a first cooler 90; the first cooler 90 is disposed outside the casing, wherein the refrigerant compressed by the compression assembly is first cooled by the first cooler 90, and then expanded by the expansion assembly. 4 expansion treatment.
  • This arrangement can avoid the high temperature of the compressor body, protect the compressor, and improve the expansion efficiency of the expansion assembly.
  • the inlet and outlet of the first cooler 90 are connected to the compressor 1 (specifically, the inlet of the first cooler 90 is in communication with the exhaust port of the secondary compression structure, the outlet of the first cooler 90 and the suction port of the expansion assembly Connected).
  • the compressor further includes a supplemental air passage 5 for replenishing the gaseous refrigerant into the compressor, and the compressor is provided with a function of supplementing the air and increasing the capacity, thereby further improving the volumetric efficiency and the cooling capacity of the compressor. .
  • compressors of the present embodiment and the following embodiments mainly use carbon dioxide as a refrigerant.
  • the present embodiment provides a compressor.
  • the embodiment further designs the compression component as follows:
  • the compression assembly in this embodiment includes a primary compression structure 31 and a secondary compression structure 32.
  • the primary compression structure 31 performs a first-stage compression treatment on the refrigerant discharged from the evaporator 95;
  • the secondary compression structure 32 performs a secondary compression treatment on the primary refrigerant.
  • the primary refrigerant includes a refrigerant that has been compressed by the primary compression structure 31.
  • the primary refrigerant further includes a refrigerant that is supplemented by the supplemental gas passage 5.
  • the compressor further includes a second cooler 91 (the second cooler 91 is disposed outside the casing, and the inlet of the second cooler 91 is in communication with the exhaust port of the primary refrigerant of the compressor 1, the second cooler The outlet of 91 is in communication with the secondary compression structure; wherein the primary refrigerant is first cooled by the second cooler 91 and then subjected to secondary compression by the secondary compression structure 32.
  • the second cooler 91 is disposed outside the casing, and the inlet of the second cooler 91 is in communication with the exhaust port of the primary refrigerant of the compressor 1, the second cooler The outlet of 91 is in communication with the secondary compression structure; wherein the primary refrigerant is first cooled by the second cooler 91 and then subjected to secondary compression by the secondary compression structure 32.
  • the specific structural design of the primary compression structure 31 and the secondary compression structure 32 in this embodiment is as follows:
  • the primary compression structure 31 includes a primary cylinder 311, a primary roller 312, and a primary cavity 310.
  • the first air cylinder 311 is provided with a first air inlet 313 and a first air outlet; wherein the first air inlet 313 is used to communicate with the air outlet of the evaporator 95.
  • the primary roller 312 is disposed in the primary cylinder 311, and the primary roller 312 is driven by the drive assembly 2 to cooperate with the primary cylinder 311 to perform a primary compression process on the refrigerant.
  • the primary cavity 310 is in communication with the first exhaust port to discharge the primary compressed refrigerant into the primary cavity 310.
  • the first-stage compression structure 31 is located at the bottom, the first-stage cavity 310 is opened on the lower flange 15, and the first-stage cavity 310 is formed by the following method.
  • the secondary compression structure 32 includes a secondary cylinder 321, a secondary roller 322, and a secondary cavity.
  • the second cylinder is provided with a second suction port 323 and a second exhaust port; wherein the second intake port 323 is for drawing in the primary refrigerant.
  • the secondary roller 322 is disposed in the secondary cylinder 321 and the secondary roller is driven by the drive assembly 2 to cooperate with the secondary cylinder 321 to perform secondary compression treatment of the refrigerant.
  • the secondary cavity is in communication with the second exhaust port to discharge the secondary compressed refrigerant into the secondary cavity.
  • the secondary cavity is disposed on the intermediate partition 17, and the sealed cavity is surrounded by the intermediate partition 17 and the upper partition 18, and the secondary cavity is used for storing the secondary compression.
  • the latter refrigerant is provided with a total exhaust port 324 having a secondary compression structure to communicate with the first cooler 90.
  • the volume ratio of the primary cylinder 311 and the secondary cylinder 321 is 0.5-1.35; here, the volume ratio of the primary cylinder 311 and the secondary cylinder 321 is set to 0.5 by the analysis and verification structure of the freezing condition. -1.35, which is beneficial to improve the performance of the compressor.
  • the housing is provided with an exhaust line 8 (preferably, the exhaust line 8 is disposed on the upper cover 11), and the exhaust line 8 and the inner chamber of the housing (ie, the compressor The chamber is connected; here, the housing is a fully enclosed structure.
  • the compressor structure shown in FIG. 1 is the first scheme, that is, the first-stage cavity 310 is in communication with the inner cavity of the casing, and the exhaust pipe 8 is used to communicate with the second cooling.
  • the inlet of the device 91 and the outlet of the second cooler 91 are in communication with the second suction port 323 on the secondary cylinder 321; for this solution, the primary refrigerant in the primary cavity 310 is sequentially passed from bottom to top.
  • the flow passages of the stage cylinder 311, the lower partition 16, the secondary cylinder 321, the intermediate partition 17, the upper partition 18, the first expansion cylinder 41, the exhaust chamber 10, and the upper flange 19 enter the inner cavity of the casing.
  • the compressor structure shown in FIGS. 8 and 9 is the second solution: the first cavity 310 is connected to the second suction port of the secondary cylinder 321, and the second The cavity is in communication with the interior of the housing and the exhaust line 8 is for communicating with the inlet of the first cooler 90. As shown in FIG.
  • the first-stage cavity directly communicates with the suction port of the secondary cylinder 321, and the secondary-compressed refrigerant enters the secondary cavity and sequentially passes through the first expansion cylinder 41, the exhaust cavity and the upper portion.
  • the flow passage on the flange enters the interior of the housing.
  • the exhaust port 314 on the primary cavity directly communicates with the second intake port 323 of the secondary cylinder 321 through the external passage of the compressor, and the refrigerant after the secondary compression enters the secondary cavity. And sequentially passing through the flow passages on the first expansion cylinder 41, the exhaust chamber and the upper flange into the inner cavity of the housing.
  • the supplemental air passage 5 is in direct communication with the primary cavity (see FIGS. 1 to 6 ). , Figure 10 and Figure 11); or the air supply channel is in direct communication with the inner cavity of the housing (as shown in Figure 7, the air supply channel 5 is directly disposed on the housing); or may be associated with the primary cavity and the housing cavity
  • the circulation channels are connected.
  • the supplemental passage 5 is in direct communication with the primary chamber.
  • the present embodiment provides a compressor.
  • the present embodiment mainly designs the expansion assembly 4 as follows:
  • the expansion assembly 4 in this embodiment mainly includes: a first expansion cylinder 41 and a first roller 42; wherein the first expansion cylinder 41 is provided with a third suction port 411 and a third exhaust port.
  • the first roller 42 is disposed in the first expansion cylinder 41.
  • the third suction port 411 is for sucking the refrigerant subjected to the multi-stage compression processing of the compression assembly into the first expansion cylinder 41; the first roller 42 is for sucking into the first expansion cylinder 41 under the driving of the drive assembly 2
  • the refrigerant is subjected to expansion treatment; the refrigerant after expansion treatment is discharged from the third exhaust port.
  • the third suction port 411 is connected to the outlet of the first cooler.
  • the first expansion cylinder does not need to compress the refrigerant, and the volume change (from small to large) of the high-pressure refrigerant inside the first expansion cylinder changes from high pressure to low pressure, and the state of the refrigerant changes from a gaseous state to a liquid state.
  • the refrigerant works on the first expansion cylinder, and part of the lost work can be recovered, thereby improving the compression efficiency of the compressor.
  • the expansion assembly further includes a first cavity, wherein the first cavity is in communication with the third exhaust port, and the first cavity is provided with a fourth exhaust port.
  • the fourth exhaust port serves as a total exhaust port 43 of the expansion assembly for discharging the refrigerant expanded by the expansion assembly to a heat exchange member (e.g., economizer 93) connected to the compressor.
  • the ratio of the suction volume to the expansion volume of the first expansion cylinder 41 is 2.0-5.55; the ratio of the suction volume to the expansion volume of the first expansion cylinder 41 is 2.0-5.55 by the analysis and verification structure of the freezing condition. Conducive to improve the performance of the compressor.
  • the expansion assembly further includes: a second expansion cylinder 47 and a second roller 48; wherein the second expansion cylinder 47 is provided with a fourth suction port and a fifth exhaust port; The fourth suction port is in communication with the fifth exhaust port; the second roller 48 is disposed in the second expansion cylinder 47, and the second roller 48 is drivingly coupled to the drive assembly.
  • the fifth exhaust port serves as a total exhaust port of the expansion assembly for discharging the refrigerant expanded by the expansion assembly to a heat exchange member (e.g., economizer 93) connected to the compressor.
  • a heat exchange member e.g., economizer 93
  • the expansion assembly in this embodiment may be in the form of a single cylinder expansion (only the first expansion cylinder is provided) and the two-cylinder expansion form (the first expansion cylinder and the second expansion cylinder are simultaneously provided), and further set on the basis of the first expansion cylinder
  • the second expansion cylinder can increase the expansion efficiency.
  • the expansion efficiency is higher than that of the vortex form, the production processability is good, and the cost is low.
  • the present embodiment provides a compressor.
  • the driving assembly of the embodiment is designed as follows: the driving assembly 2 includes a motor, and specifically, the driving assembly includes a driving structure and The crankshaft 23; the driving structure comprises a motor stator 21 and a motor rotor 22; wherein the compression assembly and the expansion assembly are fitted on the crankshaft 23 of the motor.
  • the electronic stator 21 is fitted outside the motor rotor 22, and the motor rotor 22 is fitted over the crankshaft 23.
  • the terminal 111 is disposed on the circular arc-shaped upper cover 11 and connected to the motor stator 21 through a power line; when the terminal 111 is energized, a magnetic pulling force is generated between the motor stator 21 and the motor rotor 22, and the drive is assembled in the middle of the motor rotor 22.
  • the crankshaft 23 rotates at a high speed.
  • the crankshaft 23 is provided with three eccentric portions, and the first eccentric portion is respectively equipped with a first-stage roller, a second-stage roller and a first roller, and is respectively rotated and compressed in the first-stage cylinder, the second-stage cylinder and the first expansion cylinder. .
  • the inlet of the exhaust line 8 is located above the motor stator 21 and the motor rotor 22, so that the refrigerant in the chamber of the housing passes through the motor stator 21 and the motor on the motor before being sucked into the exhaust line 8.
  • the rotor 22 cools and cools the motor stator 21 and the motor rotor 22.
  • the oil deflector 7 (preferably at a position on the crankshaft 23 that is 5 mm higher than the rotor of the motor) is mounted on the crankshaft 23 at a position higher than the rotor 22 of the motor to separate the frozen oil.
  • the bottom of the compressor in the embodiment is provided with an oil storage tank, and the bottom is filled with the refrigerating oil 110; specifically, the pump body assembly, the casing and the lower cover 13 are formed, and the lower end of the crankshaft 23 is connected with the oil pump 6.
  • the present embodiment further details the structure of the compressor shown in FIGS. 1 to 11 as follows:
  • the compressor casing shown in FIG. 1 is a fully enclosed drum-shaped closed container, and is housed and assembled.
  • the pump body assembly includes a compression assembly and an expansion assembly 4 that is comprised of two separate primary compression structures 31 and two secondary compression structures 32.
  • the primary compression structure 31 includes a primary cylinder 311, a primary roller 312, and a primary cavity 310 disposed on the lower flange 15.
  • the secondary compression structure is composed of a secondary cylinder 321, a secondary roller 322, and a secondary cavity disposed on the intermediate partition 17 (the secondary cavity is formed by the upper partition 18 and the intermediate partition 17 to form a closed cavity)
  • the secondary cylinder 321 is located on the primary cylinder 311, and the lower partition 16 is disposed between the primary cylinder 311 and the secondary cylinder 321 .
  • the expansion assembly 4 includes a first expansion cylinder 41, a first roller 42, and a first cavity disposed on the exhaust chamber 10 (a cavity formed between the upper flange 19 and the exhaust chamber 10 is a first cavity)
  • the total exhaust port 43 of the expansion assembly is connected to the economizer of the refrigeration system on the side of the exhaust chamber 10; wherein the exhaust chamber 10 is connected
  • the compression assembly 3 is designed coaxially with the expansion assembly 4, and the refrigerant expands within the expansion assembly to urge the crankshaft 23 to rotate, transmitting torque to the compression assembly 3.
  • An exhaust valve assembly is provided on both the intermediate partition 17 and the lower flange 15.
  • the upper flange 19 and the exhaust chamber 10 above the first expansion cylinder 41 and the lower flange 15 below the primary cylinder 311 serve to support and seal.
  • a first air inlet 313 is disposed on a side of the first stage cylinder 311, a gas supply passage 5 is disposed on a side of the lower flange 15, and a second air inlet 323 is disposed on a side of the second cylinder 321 at a side of the first expansion cylinder 41.
  • a third suction port 411 is provided, and a fourth exhaust port is provided on the side of the exhaust chamber 10 as the total exhaust port 43 of the expansion assembly, and the side of the intermediate partition plate 17 is provided with a total exhaust of the secondary compression structure.
  • Port 324 is provided.
  • the air supply passage 5 may be on the side of the lower flange 15, or may be disposed in the primary cylinder 311, the lower partition 16, the secondary cylinder 321, the intermediate partition 17, the upper partition 18, and the first expansion cylinder 41.
  • the side surface of the upper flange 19 (in the lower flange 15, the primary cylinder 311, the lower partition 16, the secondary cylinder 321, the intermediate partition 17, the upper partition 18, the first expansion cylinder 41, the exhaust chamber 10,
  • the flange 19 has intermediate flow passages which are circular, curved, square or irregular in shape.
  • the first air inlet 313 and the air supply passage 5 are welded to the casing to ensure the reliability of the compressor.
  • the lower cover 14 and the lower flange 15 form a closed and cavity for storing the mixed primary refrigerant (including: the compressed refrigerant of the primary cylinder 311 and the intermediate pressure of the economizer 93 through the supplementary air passage 5) The refrigerant).
  • the oil pump 6 is attached to the lower end of the crankshaft 23, sucks oil from the oil storage tank as the crankshaft 23 rotates, and supplies the refrigerating oil to the respective friction pairs through the flow holes in the crankshaft 23, thereby ensuring various compressors. Good lubrication under working conditions improves the reliability of the compressor.
  • the expansion assembly, the primary compression structure and the secondary compression structure of the compressor shown in Fig. 2 to Fig. 6 are adjusted correspondingly in the upper and lower positions of the casing.
  • the structure of the compressor shown in FIG. 2 only expands the assembly.
  • the positions of the (first expansion cylinder 41, the first cavity) and the secondary compression structure (the secondary cylinder 321 and the secondary cavity) are exchanged (in FIG. 2, the secondary compression structure and the expansion are sequentially arranged from top to bottom). Components and primary compression structure).
  • the structure of the compressor shown in FIG. 1 the expansion assembly, the secondary compression structure, the primary compression structure are arranged in order from top to bottom in FIG. 1
  • the structure of the compressor shown in FIG. 2 only expands the assembly.
  • the positions of the (first expansion cylinder 41, the first cavity) and the secondary compression structure (the secondary cylinder 321 and the secondary cavity) are exchanged (in FIG. 2, the secondary compression structure and the expansion are sequentially arranged from top to bottom). Components and primary compression structure).
  • FIG. 3 is based on the structure shown in FIG. 1, and the positions of the primary compression structure and the secondary compression structure are exchanged (in FIG. 3, the expansion assembly, the primary compression structure, and the first compression structure are arranged in order from top to bottom. Secondary compression structure).
  • the structure of the compressor shown in FIG. 4 is based on the structure of the compressor shown in FIG. 2, and the positions of the primary compression structure and the secondary compression structure are replaced (in FIG. 4, the primary compression structure is sequentially arranged from top to bottom, Expansion assembly and secondary compression structure).
  • the compressor structure shown in FIG. 5 is based on the structure of the compressor shown in FIG. 2, and the position of the expansion assembly and the primary compression structure is changed. (In FIG. 5, the secondary compression structure is set in order from top to bottom, Compression structure, expansion assembly).
  • the compressor structure shown in Fig. 6 is based on the structure of the compressor shown in Fig. 4, and the position of the secondary compression structure and the expansion assembly is changed (in Fig. 6, the primary compression structure is set in order from top to bottom, Compression structure and expansion assembly).
  • the compressor structure shown in Fig. 7 is compared with the compressor structure shown in Fig. 1.
  • the position of the air supply passage 5 is directly communicated with the first-stage cavity, and is directly communicated with the inner cavity of the casing.
  • the exhaust line in the compressor shown in Figs. 1 to 7 discharges the refrigerant of the first stage pressure.
  • the compressor structure shown in FIG. 8 is compared with the compressor structure shown in FIG. 1.
  • the first-stage cavity in the primary compression structure directly communicates with the suction port of the secondary cylinder, and the secondary cavity passes through the interior of the pump body assembly.
  • the intermediate flow passage is in communication with the interior of the housing.
  • the exhaust line discharges the refrigerant of the second stage pressure.
  • the compressor structure shown in FIG. 9 is compared with the compressor structure shown in FIG. 8.
  • the first-stage cavity in the primary compression structure communicates with the suction port of the secondary cylinder through the external passage, and the secondary cavity passes through the pump body.
  • the inner intermediate passage of the assembly is in communication with the interior of the housing.
  • the compression assembly and the expansion assembly in the compressor shown in Figures 1 through 9 are all located below the drive structure.
  • the compressor shown in Fig. 10 is disposed above the drive structure in comparison with the compressor structure shown in Fig. 1, and the upper and lower sides of the first expansion cylinder 41 are positioned by flanges.
  • the compressor shown in Fig. 11 is based on the compressor shown in Fig. 10, in addition to the first expansion cylinder 41, a second expansion cylinder 47 is provided, and a second roller 48 is disposed in the second expansion cylinder.
  • the first expansion cylinder 41 and the second expansion cylinder 47 are separated by a partition 46.
  • a first flange 44 is disposed above the first expansion cylinder 41, and a second flange is disposed below the second expansion cylinder 47. 45 positioning.
  • the refrigeration cycle apparatus of the present embodiment includes the compressor 1 described in any of the above embodiments.
  • the refrigeration cycle apparatus further includes an evaporator 95; wherein an inlet of the evaporator 95 is used to communicate with a total exhaust port of the expansion assembly 4, and an outlet of the evaporator is used to communicate the compression assembly (the suction port of the primary compression structure) ).
  • the refrigeration cycle apparatus further includes an economizer 93; wherein the inlet of the economizer 93 is in communication with the total exhaust port of the expansion assembly.
  • the economizer 93 is provided with a first outlet and a second outlet, the first outlet is connected to the inlet of the evaporator 95 for conveying the liquid refrigerant to the evaporator 95; the second outlet is connected to the supplemental passage 5 for flashing
  • the gaseous refrigerant is supplied to the compressor 1 through the gas supply passage 5.
  • the economizer 93 functions to flash a medium pressure gaseous refrigerant.
  • an expansion mechanism 94 is provided on the line communicating between the economizer 93 and the evaporator 95 for reducing the power of the refrigerant operation.
  • the expansion mechanism 94 mainly includes an expansion valve, an expander, a throttle valve, and the like.
  • the cooling mode of the first cooler 90 and the second cooler 91 may be air-cooled or water-cooled.
  • the working principle of the refrigeration cycle apparatus shown in FIG. 1 and FIG. 12 is as follows: after the terminal 111 is energized, a magnetic pulling force is generated between the motor stator 21 and the motor rotor 22, and the crankshaft 23 assembled in the middle of the motor rotor 22 is driven to rotate at a high speed, and the crankshaft 23 is rotated.
  • the first stage compressed refrigerant After the first stage cylinder 311 sucks the low temperature and low pressure refrigerant from the evaporator 95, the first stage compressed refrigerant is discharged to the lower cover 14 and the lower flange 15 to form the first stage cavity 310, and the economizer 93 flashes.
  • the medium-pressure refrigerant passes through the air supply passage 5, enters the first-stage cavity 310 at the same time, and is mixed with the first-stage compressed refrigerant to pass through the first-stage cylinder 311, the lower partition plate 16, the second-stage cylinder 321, and the intermediate partition plate 17.
  • the intermediate flow passage of the upper partition 18, the first expansion cylinder 41, the exhaust chamber 10, and the upper flange 19 enters into the inner cavity of the compressor casing, and the pressure inside the casing is the first-stage exhaust pressure, and Cooling and cooling the motor stator and the motor rotor, and the oil deflector 7 performs oil and gas separation on the refrigerant, and the separated refrigerant is cooled by the exhaust pipe 8 to the second cooler 91, and then passed through the secondary cylinder 321
  • the second suction port 323 enters the secondary cylinder 321 for compression, and the secondary compressed refrigerant enters the first cooler 90 through the total exhaust port 324 of the secondary compression structure for heat release, and then the heat is released.
  • the refrigerant enters the third intake port 411 of the first expansion cylinder 41
  • the expansion of the refrigerant in the expansion cylinder 41 causes a low-pressure two-phase refrigerant to be formed in the first expansion cylinder 41, and finally enters the economizer 93 through the total exhaust port 43 of the expansion assembly, and a portion of the refrigerant flashes the intermediate pressure therein.
  • the gaseous refrigerant is injected into the interior of the compressor 1 from the supplementary gas passage 5, and the remaining liquid refrigerant is depressurized by the expansion mechanism 94, then enters the evaporator 95 to absorb heat to form a gaseous refrigerant, and finally enters the compressor, thereby forming refrigeration. cycle.
  • the refrigeration cycle apparatus shown in FIG. 13 (corresponding to the compressors shown in FIGS. 8 and 9) is different from the refrigeration cycle apparatus of FIGS. 1 and 12 in that the second cooler is not provided, and the first stage refrigeration The agent does not enter the inner cavity of the casing of the compressor, but directly enters the secondary cylinder 321 for secondary compression, so there is no intermediate refrigeration for the intermediate refrigeration cycle.
  • the refrigeration cycle device shown in FIG. 14 is different from the refrigeration cycle device shown in FIG. 1 and FIG. 12 in that the expansion assembly is a two-cylinder expansion unit; after the refrigerant is compressed in the secondary compression structure, the refrigerant enters the first An expansion cylinder performs expansion treatment and then enters the second expansion cylinder for expansion treatment.
  • the expansion assembly is a two-cylinder expansion unit; after the refrigerant is compressed in the secondary compression structure, the refrigerant enters the first An expansion cylinder performs expansion treatment and then enters the second expansion cylinder for expansion treatment.
  • the difference from FIG. 14 is that the second cooler is not provided, and the primary refrigerant does not enter the casing inner cavity of the compressor, but directly enters the secondary cylinder 321 Secondary compression, so there is no primary compression and then intermediate cooling this refrigeration cycle.
  • FIG. 16 is a pressure diagram of a refrigeration system according to an embodiment of the present invention.
  • 5-6h means equal enthalpy expansion (throttle valve realization)
  • 5-6S means isentropic expansion (ideal situation, practically difficult to achieve)
  • 5-6 means actual expander expansion process
  • ⁇ difference 5-6h means unit mass The refrigerant expands to recover energy.
  • the compressor and the refrigeration cycle device provided by the embodiments of the present invention are two-stage compression zone inter-stage gas-enhanced structure, which can reduce the pressure difference of each stage, reduce the leakage amount, and improve the single-stage compression.
  • the volumetric efficiency and cooling capacity of the compressor at the same time, the expansion work is recovered by the expansion component, the power consumption of the compressor is reduced, the coefficient of performance of the compressor and the circulation system is improved; and the coefficient of performance of the transcritical cycle refrigeration device can be greatly improved. .

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Abstract

Provided are a compressor (1) and a refrigeration circulation device. The compressor (1) comprises a housing, a driving assembly (2), a compression assembly (3) and an expansion assembly (4), wherein the compression assembly (3) is connected to the driving assembly (2), and is driven by the driving assembly (2) to carry out multi-stage compression on a refrigerant; and the expansion assembly (4) is connected to the driving assembly (2), and expands the compressed refrigerant. The refrigeration circulation device comprises the compressor (1).

Description

一种压缩机及制冷循环装置Compressor and refrigeration cycle device 技术领域Technical field
本发明涉及一种压缩机制冷技术领域,特别是涉及一种压缩机及制冷循环装置。The invention relates to the technical field of compressor refrigeration, and in particular to a compressor and a refrigeration cycle device.
背景技术Background technique
目前,在制冷行业中,普遍使用的制冷剂主要为CFC和HCFC。但是,CFC和HCFC制冷剂对臭氧层有破坏作用、以及产生温室效应。近年来,业内人士进行代替制冷剂CFC和HCFC的研究工作;其中,二氧化碳具有ODP=0、GWP=1、不破坏臭氧层、不污染环境、来源丰富、价格便宜及优良的传热性能等优点,因此被作为制冷剂可能的替代物而受到关注。与CFC和HCFC相比,二氧化碳的临界温度低(31.1℃)、临界压力高(7.37MPa),当其作为制冷剂时,主要形式为跨临界制冷循环,性能系数比常规制冷剂循环低20%以上;主要原因是二氧化碳的运行压力和压力差都很高,节流损失更大,为了提高循环制冷性能,其中一个技术路径是提高压缩机的性能。At present, the refrigerants commonly used in the refrigeration industry are mainly CFCs and HCFCs. However, CFC and HCFC refrigerants have a destructive effect on the ozone layer and a greenhouse effect. In recent years, the industry has carried out research work to replace refrigerant CFC and HCFC; among them, carbon dioxide has the advantages of ODP=0, GWP=1, no ozone layer destruction, no pollution to the environment, abundant sources, low price and excellent heat transfer performance. It has therefore received attention as a possible alternative to refrigerants. Compared with CFC and HCFC, the critical temperature of carbon dioxide is low (31.1 °C) and the critical pressure is high (7.37 MPa). When it is used as a refrigerant, the main form is a transcritical refrigeration cycle, and the coefficient of performance is 20% lower than that of the conventional refrigerant cycle. Above; the main reason is that the operating pressure and pressure difference of carbon dioxide are both high and the throttling loss is greater. One of the technical paths is to improve the performance of the compressor in order to improve the performance of the circulating refrigeration.
现有技术主要公开以下两种以二氧化碳作为制冷剂的压缩机。第一种压缩机为一种滚动转子式中背压二氧化碳压缩机,采用双级原理,具体地,该压缩机有两个气缸,其中一个气缸为一级压缩缸,另外一个气缸为二级压缩缸;低压制冷剂先流入压缩机底部的一级压缩缸,在压缩结构的作用下被压缩至中间压力,直接排放到压缩机壳体中,然后在中间冷却器中冷却后流入压缩机上部的二级气缸,制冷剂在二级气缸中被压缩至高压后排出。第二种压缩机为带膨胀机构的涡流转子压缩机,膨胀机构为涡流形式,压缩机构为滚动转子形式,涡流与转子部分采用同轴设计,使流入膨胀机构的制冷剂膨胀,和电动机共同驱动主轴旋转,由此驱动压缩机构压缩,这样通过制冷循环过程中回收动力并在压缩过程中加以利用,由此提高制冷循环性能。The prior art mainly discloses the following two types of compressors using carbon dioxide as a refrigerant. The first type of compressor is a rolling rotor type medium pressure carbon dioxide compressor using a two-stage principle. Specifically, the compressor has two cylinders, one of which is a primary compression cylinder and the other is a secondary compression. Cylinder; the low-pressure refrigerant first flows into the first-stage compression cylinder at the bottom of the compressor, is compressed to the intermediate pressure under the action of the compression structure, is directly discharged into the compressor casing, and then cooled in the intercooler and flows into the upper part of the compressor. In the secondary cylinder, the refrigerant is compressed to a high pressure in the secondary cylinder and discharged. The second type of compressor is a vortex rotor compressor with an expansion mechanism, the expansion mechanism is in the form of a vortex, the compression mechanism is in the form of a rolling rotor, and the vortex and the rotor portion are coaxially designed to expand the refrigerant flowing into the expansion mechanism and drive together with the motor. The spindle rotates, thereby driving the compression mechanism to compress, thereby recovering power during the refrigeration cycle and utilizing it during the compression process, thereby improving the refrigeration cycle performance.
但是,本发明的发明人发现上述两种以二氧化碳作为制冷剂的压缩机至少分别存在如下技术问题:However, the inventors of the present invention have found that the above two types of compressors using carbon dioxide as a refrigerant have at least the following technical problems:
(1)上述第一种压缩机由于需要对制冷剂进行双极压缩处理,相对于单级压缩机而言,压缩机的功耗较大。(1) Since the first type of compressor described above requires bipolar compression treatment of the refrigerant, the power consumption of the compressor is large relative to the single-stage compressor.
(2)上述第二种压缩机在大压力差的工况下,存在制冷剂泄露偏大、功耗高等技术问题。(2) In the above-mentioned second type of compressor, under the condition of large pressure difference, there are technical problems such as large refrigerant leakage and high power consumption.
发明内容Summary of the invention
有鉴于此,本发明提供一种既能对制冷剂进行多级压缩、又能对压缩处理后的制冷剂进行膨胀并回收膨胀功的压缩机及制冷循环装置,主要目的在于减少每级压力差、降低制冷剂的泄漏量及压缩机功耗,以提高压缩机及制冷循环装置的性能系数。In view of the above, the present invention provides a compressor and a refrigeration cycle device capable of performing multi-stage compression of a refrigerant and expanding and recovering expansion work of the refrigerant after compression, and the main purpose is to reduce the pressure difference of each stage. Reduce the leakage of refrigerant and the power consumption of the compressor to improve the coefficient of performance of the compressor and refrigeration cycle.
为达到上述目的,本发明主要提供如下技术方案:In order to achieve the above object, the present invention mainly provides the following technical solutions:
一方面,本发明的实施例提供一种压缩机,其中,所述压缩机包括:In one aspect, an embodiment of the present invention provides a compressor, wherein the compressor includes:
壳体;case;
驱动组件,设置在所述壳体中;a drive assembly disposed in the housing;
压缩组件,设置在所述壳体中,且所述压缩组件与所述驱动组件驱动连接,用于在所述驱动组件的驱动下对制冷剂进行多级压缩处理;a compression assembly disposed in the housing, and the compression assembly is drivingly coupled to the drive assembly for performing multi-stage compression processing of the refrigerant under the driving of the drive assembly;
膨胀组件,设置在所述壳体中,且所述膨胀组件与所述驱动组件连接;其中,所述膨胀组件用于对经所述压缩组件压缩处理后的制冷剂进行膨胀处理。An expansion assembly disposed in the housing, and the expansion assembly is coupled to the drive assembly; wherein the expansion assembly is configured to expand a refrigerant processed by the compression assembly.
本发明的目的及解决其技术问题还可采用以下技术措施进一步实现。The object of the present invention and solving the technical problems thereof can be further achieved by the following technical measures.
优选地,所述压缩机还包括第一冷却器;其中,Preferably, the compressor further includes a first cooler; wherein
经所述压缩组件压缩处理后的制冷剂先通过所述第一冷却器冷却后,再经所述膨胀组件膨胀处理。The refrigerant compressed by the compression assembly is first cooled by the first cooler, and then expanded by the expansion assembly.
优选地,所述压缩组件包括:Preferably, the compression component comprises:
一级压缩结构,所述一级压缩结构对由蒸发器排出的制冷剂进行一级压缩处理;a primary compression structure, wherein the primary compression structure performs a first-stage compression treatment on the refrigerant discharged from the evaporator;
二级压缩结构,所述二级压缩结构对一级制冷剂进行二级压缩处理;其中,所述一级制冷剂包括经所述一级压缩结构一级压缩处理后的制冷剂。a secondary compression structure, the secondary compression structure performs a secondary compression treatment on the primary refrigerant; wherein the primary refrigerant includes a refrigerant that is first-stage compressed by the primary compression structure.
优选地,所述压缩机包括补气通道,用于向压缩机内补入气态制冷剂;Preferably, the compressor includes a supplemental air passage for feeding a gaseous refrigerant into the compressor;
其中,所述一级制冷剂还包括由所述补气通道补入的制冷剂。Wherein, the primary refrigerant further includes a refrigerant supplemented by the supplementary gas passage.
优选地,所述压缩机还包括第二冷却器;其中,Preferably, the compressor further includes a second cooler; wherein
所述一级制冷剂先通过第二冷却器冷却后再经所述二级压缩结构进行二级压缩处理。The primary refrigerant is first cooled by the second cooler and then subjected to secondary compression treatment by the secondary compression structure.
优选地,所述一级压缩结构包括:Preferably, the primary compression structure comprises:
一级气缸,所述一级气缸上设有第一吸气口和第一排气口;其中,所述第一吸气口用于连通蒸发器的出口;a first stage cylinder, wherein the first stage cylinder is provided with a first air inlet and a first air outlet; wherein the first air inlet is used to communicate with an outlet of the evaporator;
一级滚子,所述一级滚子安置在所述一级气缸中,且所述一级滚子在所述驱动组件的驱动下配合一级气缸对制冷剂进行一级压缩处理;a first-stage roller, wherein the first-stage roller is disposed in the first-stage cylinder, and the first-stage roller is subjected to a first-stage compression treatment of the refrigerant by the first-stage cylinder under the driving of the driving component;
一级腔体,所述一级腔体与所述第一排气口连通,以使一级压缩后的制冷剂排放到所述一级腔体中。a first-stage cavity that communicates with the first exhaust port to discharge the first-stage compressed refrigerant into the first-stage cavity.
优选地,所述二级压缩结构包括:Preferably, the secondary compression structure comprises:
二级气缸,所述二级气缸上设有第二吸气口和第二排气口;其中,所述第二吸气口将一级制冷剂吸入所述二级气缸中;a second cylinder, wherein the second cylinder is provided with a second suction port and a second exhaust port; wherein the second intake port draws the primary refrigerant into the secondary cylinder;
二级滚子,所述二级滚子安置在所述二级气缸中,且所述二级滚子在所述驱动组件的驱动下配合二级气缸对一级制冷剂进行二级压缩处理;a secondary roller, wherein the secondary roller is disposed in the secondary cylinder, and the secondary roller is driven by the driving component to cooperate with the secondary cylinder to perform secondary compression treatment on the primary refrigerant;
二级腔体,所述二级腔体与所述第二排气口连通,以使二级压缩后的制冷剂排放到所述二级腔体中。a secondary cavity, the secondary cavity being in communication with the second exhaust port to discharge secondary compressed refrigerant into the secondary cavity.
优选地,所述一级气缸和二级气缸的容积比为0.5-1.35。Preferably, the volume ratio of the primary cylinder to the secondary cylinder is 0.5-1.35.
优选地,所述壳体上设置有排气管路,且所述排气管路与所述壳体的内腔连通;其中,Preferably, the housing is provided with an exhaust line, and the exhaust line is in communication with the inner cavity of the housing;
当压缩机包括第二冷却器时,所述一级腔体与所述壳体的内腔连通,且所述排气管路用于连通第二冷却器的进口,第二冷却器的出口与所述二级气缸上的第二吸气口连通;或The first stage cavity is in communication with the inner cavity of the housing when the compressor includes the second cooler, and the exhaust line is for communicating with the inlet of the second cooler, and the outlet of the second cooler is a second suction port on the secondary cylinder is connected; or
所述一级腔体与所述二级气缸上的第二吸气口连通,所述二级腔体与所述壳体的内腔连通,且所述排气管路用于连通第一冷却器的进口。The first stage cavity is in communication with a second suction port on the secondary cylinder, the secondary cavity is in communication with a lumen of the housing, and the exhaust line is configured to communicate with the first cooling Import of the device.
优选地,所述膨胀组件包括:Preferably, the expansion assembly comprises:
第一膨胀气缸,所述第一膨胀气缸上设置有第三吸气口和第三排气口;a first expansion cylinder, the first expansion cylinder is provided with a third suction port and a third exhaust port;
第一滚子,所述第一滚子安置在所述第一膨胀气缸中;a first roller, the first roller being disposed in the first expansion cylinder;
其中,所述第三吸气口用于将经所述压缩组件多级压缩处理后的制冷剂吸入所述第一膨胀气缸中;所述第一滚子用于在所述驱动组件的驱动下对吸入所述第一膨胀气缸中的制冷剂进行膨胀处理;经膨胀处理后的制冷剂由所述第三排气口排出;Wherein the third suction port is configured to suck the refrigerant subjected to the multi-stage compression treatment by the compression assembly into the first expansion cylinder; the first roller is used to be driven by the drive assembly Performing an expansion treatment on the refrigerant sucked into the first expansion cylinder; the refrigerant after the expansion treatment is discharged from the third exhaust port;
其中,当所述压缩机连接第一冷却器时,所述第三吸气口与第一冷却器的出口连接。Wherein, when the compressor is connected to the first cooler, the third suction port is connected to an outlet of the first cooler.
优选地,所述膨胀组件还包括第一腔体,其中,Preferably, the expansion assembly further includes a first cavity, wherein
所述第一腔体与所述第三排气口连通,且所述第一腔体上设置有第四排气口,以将膨胀组件膨胀处理后的制冷剂排到与压缩机连接的换热部件上。The first cavity is in communication with the third exhaust port, and the first cavity is provided with a fourth exhaust port to discharge the refrigerant after the expansion assembly expansion process to the compressor connection On the hot part.
优选地,所述第一膨胀气缸的吸气容积与膨胀容积比为2.0-5.55。Preferably, the ratio of the suction volume to the expansion volume of the first expansion cylinder is 2.0-5.55.
优选地,所述膨胀组件还包括:Preferably, the expansion component further comprises:
第二膨胀气缸,所述第二膨胀气缸上设有第四吸气口和第五排气口;其中,所述第四吸气口与所述第三排气口连通;a second expansion cylinder, wherein the second expansion cylinder is provided with a fourth suction port and a fifth exhaust port; wherein the fourth intake port is in communication with the third exhaust port;
第二滚子,所述第二滚子安置在所述第二膨胀气缸中,且所述第二滚子与所述驱动组件驱动连接。a second roller, the second roller being disposed in the second expansion cylinder, and the second roller being drivingly coupled to the drive assembly.
优选地,所述驱动组件包括曲轴和用于驱动曲轴运转的驱动结构;所述驱动结构包括电机定子、电机转子;其中,Preferably, the drive assembly includes a crankshaft and a drive structure for driving the operation of the crankshaft; the drive structure includes a motor stator and a motor rotor; wherein
所述压缩组件、膨胀组件套装在所述曲轴上;The compression assembly and the expansion assembly are assembled on the crankshaft;
其中,当所述壳体上设置有排气管路时,所述壳体的腔体内的制冷剂在吸入排气管路前先经过所述驱动结构,以对驱动结构进行冷却降温。Wherein, when the exhaust pipe is disposed on the casing, the refrigerant in the cavity of the casing passes through the driving structure before being sucked into the exhaust pipe to cool and cool the driving structure.
优选地,所述曲轴上的在高于所述驱动结构位置处安装有挡油板,用于分离冷冻油。Preferably, a baffle plate is mounted on the crankshaft at a position higher than the drive structure for separating the refrigerating oil.
优选地,所述压缩组件位于所述驱动结构的下方;Preferably, the compression assembly is located below the drive structure;
所述膨胀组件位于所述驱动结构的上方;或所述膨胀组件位于所述驱动结构的下方。The expansion assembly is located above the drive structure; or the expansion assembly is located below the drive structure.
另一方面,本发明的实施例提供一种制冷循环装置,其中,所述制冷循环装置包括上述的压缩机。In another aspect, embodiments of the present invention provide a refrigeration cycle apparatus, wherein the refrigeration cycle apparatus includes the compressor described above.
优选地,所述制冷循环装置还包括:Preferably, the refrigeration cycle device further comprises:
蒸发器,所述蒸发器的进口用于连通所述膨胀组件连通,所述蒸发器的出口用于连通所述压缩组件。An evaporator, an inlet of the evaporator for communicating with the expansion assembly, an outlet of the evaporator for communicating the compression assembly.
优选地,当所述压缩机包括补气通道时,所述制冷循环装置还包括经济器;其中,Preferably, when the compressor includes an air supply passage, the refrigeration cycle device further includes an economizer; wherein
所述经济器的进口与所述膨胀组件连通;An inlet of the economizer is in communication with the expansion assembly;
所述经济器上设置有第一出口和第二出口,所述第一出口连通所述蒸发器的进口,用于将液态制冷剂输送至蒸发器;所述第二出口连通所述补气通道,用于将闪发出的气态制冷剂通过补气通道补入压缩机中。The economizer is provided with a first outlet communicating with an inlet of the evaporator for conveying liquid refrigerant to the evaporator, and a second outlet communicating with the supplemental passage It is used to charge the flashed gaseous refrigerant into the compressor through the air supply passage.
优选地,所述经济器和蒸发器之间连通的管路上还设置有膨胀机构,用于降低制冷剂运行的动力。Preferably, an expansion mechanism is provided on the pipeline communicating between the economizer and the evaporator for reducing the power of the refrigerant operation.
与现有技术相比,本发明的压缩机及制冷循环装置至少具有下列有益效果:Compared with the prior art, the compressor and the refrigeration cycle apparatus of the present invention have at least the following beneficial effects:
本实施例提供的压缩机能对制冷剂进行多级压缩处理,能减少每级压力差,降低泄漏量,提高压缩机的容积效率;同时通过膨胀组件对压缩处理后的制冷剂进行膨胀处理,并使驱动组件利用制冷剂膨胀产生的动力驱动压缩组件,从而降低压缩机功耗。另外,对制冷剂进行多级压缩处理、对压缩处理后的制冷剂进行膨胀处理,并吸收膨胀功对压缩机及制冷循环装置的性能起到协同作用,使得压缩机及制冷循环装置的性能系数高。The compressor provided in this embodiment can perform multi-stage compression treatment on the refrigerant, can reduce the pressure difference of each stage, reduce the leakage amount, and improve the volumetric efficiency of the compressor; and simultaneously expand and compress the compressed refrigerant through the expansion component, and The drive assembly is driven by the power generated by the expansion of the refrigerant to drive the compression assembly, thereby reducing compressor power consumption. In addition, multi-stage compression treatment of the refrigerant, expansion treatment of the compressed refrigerant, and absorption of expansion work synergize with the performance of the compressor and the refrigeration cycle device, so that the coefficient of performance of the compressor and the refrigeration cycle device high.
进一步地,本发明实施例提供的压缩机还包括设置在壳体外的第一冷却器;其中,经压缩组件压缩处理后的制冷剂先通过第一冷却器冷却后,再经膨胀组件膨胀处理。这样设置,能避免压缩机的机身温度高,保护压缩机,提高压缩效率。Further, the compressor provided by the embodiment of the present invention further includes a first cooler disposed outside the casing; wherein the refrigerant compressed by the compression component is first cooled by the first cooler and then expanded by the expansion component. This arrangement can avoid the high temperature of the compressor body, protect the compressor, and improve the compression efficiency.
进一步地,本发明实施例提供的压缩机还包括补气通道,用于向压缩机内补入气态制冷剂,通过这样设置,使得压缩机具有补气增焓功能,进一步能提高压缩机的容积效率和制冷量。Further, the compressor provided by the embodiment of the present invention further includes a supplemental air passage for supplementing the gas refrigerant into the compressor, and the compressor is provided with a function of supplementing gas and increasing the capacity, thereby further increasing the volume of the compressor. Efficiency and cooling capacity.
进一步地,本发明实施例提供的压缩机还包括设置在壳体外的第二冷却器;其中,一级制冷剂先通过第二冷却器冷却后再经二级压缩结构进行二级压缩处理;通过这样设置,能避免压缩机的机身温度高,保护压缩机。Further, the compressor provided by the embodiment of the present invention further includes a second cooler disposed outside the casing; wherein the primary refrigerant is first cooled by the second cooler and then subjected to the secondary compression treatment by the secondary compression structure; This arrangement can avoid the high temperature of the compressor body and protect the compressor.
进一步地,本发明实施例提供的压缩组件中的一级气缸和二级气缸的容积比为0.5-1.35、第一膨胀气缸的吸气容积与膨胀容积比为2.0-5.55在此,通过冷冻工况的分析和验证结构,将一级气缸和二级气缸的容积比设置成0.5-1.35、第一膨胀气缸的吸气容积与膨胀容积比为2.0-5.55有利于提高压缩机的性能。Further, the volume ratio of the primary cylinder and the secondary cylinder in the compression assembly provided by the embodiment of the present invention is 0.5-1.35, and the ratio of the suction volume to the expansion volume of the first expansion cylinder is 2.0-5.55. The analysis and verification structure, the volume ratio of the primary cylinder and the secondary cylinder is set to 0.5-1.35, and the ratio of the suction volume to the expansion volume of the first expansion cylinder is 2.0-5.55, which is beneficial to improve the performance of the compressor.
综上,本发明实施例提供的压缩机及制冷循环装置为双级压缩带级间补气增焓结构形式,相比单级压缩,能减小每级压力差,降低泄漏量,提高压缩机的容积效率和制冷量;同时通过膨胀组件回收膨胀功,降低压缩机功耗,提高压缩机和循环系统的性能系数;以及可以使跨临界循环制冷装置的性能系数得到较大幅度的提升。In summary, the compressor and the refrigeration cycle device provided by the embodiments of the present invention are two-stage compression zone inter-stage gas-enhanced structure, which can reduce the pressure difference of each stage, reduce the leakage amount, and improve the compressor compared with the single-stage compression. The volumetric efficiency and cooling capacity; at the same time, the expansion work is recovered by the expansion component, the compressor power consumption is reduced, the performance coefficient of the compressor and the circulation system is improved; and the performance coefficient of the transcritical cycle refrigeration device can be greatly improved.
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,并可依照说明书的内容予以实施,以下以本发明的较佳实施例并配合附图详细说明如后。The above description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood and can be implemented in accordance with the contents of the specification. Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
附图说明DRAWINGS
图1是本发明的实施例提供的第一种制冷循环装置的结构示意图;1 is a schematic structural view of a first refrigeration cycle apparatus according to an embodiment of the present invention;
图2是本发明的实施例提供的第二种压缩机的结构示意图;2 is a schematic structural view of a second compressor provided by an embodiment of the present invention;
图3是本发明的实施例提供的第三种压缩机的结构示意图;3 is a schematic structural view of a third compressor according to an embodiment of the present invention;
图4是本发明的实施例提供的第四种压缩机的结构示意图;4 is a schematic structural view of a fourth compressor according to an embodiment of the present invention;
图5是本发明的实施例提供的第五种压缩机的结构示意图;Figure 5 is a schematic structural view of a fifth compressor according to an embodiment of the present invention;
图6是本发明的实施例提供的第六种压缩机的结构示意图;6 is a schematic structural view of a sixth compressor according to an embodiment of the present invention;
图7是本发明的实施例提供的第七种压缩机的结构示意图;7 is a schematic structural view of a seventh compressor provided by an embodiment of the present invention;
图8是本发明的实施例提供的第八种压缩机的结构示意图;8 is a schematic structural view of an eighth compressor according to an embodiment of the present invention;
图9是本发明的实施例提供的第九种压缩机的结构示意图;9 is a schematic structural view of a ninth compressor provided by an embodiment of the present invention;
图10是本发明的实施例提供的第十种压缩机的结构示意图;Figure 10 is a schematic structural view of a tenth compressor provided by an embodiment of the present invention;
图11是本发明的实施例提供的第十一种压缩机的结构示意图;Figure 11 is a schematic structural view of an eleventh compressor provided by an embodiment of the present invention;
图12是图1所示制冷循环装置的结构简化图;Figure 12 is a simplified structural view of the refrigeration cycle apparatus shown in Figure 1;
图13是本发明的实施例提供的第二种制冷循环装置的结构简化图;Figure 13 is a simplified structural view of a second refrigeration cycle apparatus according to an embodiment of the present invention;
图14是本发明的实施例提供的第三种制冷循环装置的结构简化图;Figure 14 is a simplified structural view of a third refrigeration cycle apparatus according to an embodiment of the present invention;
图15是本发明的实施例提供的第四种制冷循环装置的结构简化图;Figure 15 is a simplified structural view of a fourth refrigeration cycle apparatus according to an embodiment of the present invention;
图16是本发明的实施例提供的制冷循环装置的压焓图。Figure 16 is a collapsed view of a refrigeration cycle apparatus according to an embodiment of the present invention.
附图说明:BRIEF DESCRIPTION OF THE DRAWINGS:
1、压缩机;2、驱动组件;3、压缩组件;4、膨胀组件;5、补气通道;6、油泵;7、挡油板;8、排气管路;10、排气腔;11、上盖;12、壳身;13、下盖;14、下盖板;15、下法兰;16、下隔板;17、中隔板;18、上隔板;19、上法兰;22、电机转子;21、电机定子;23、曲轴;31、一级压缩结构;310、一级腔体;311、一级气缸;312、一级滚子;313、第一吸气口;314、排气口;32、二级压缩结构;321、二级气缸;322、二级滚子;323、第二吸气口;324、总排气口;111、接线柱;41、第一膨胀气缸;42、第一滚子;411、第三吸气口;43、总排气口;44、第一法兰;45、第二法兰;46、隔板;47、第二膨胀气缸;48、第二滚子;90、第一冷却器;91、第二冷却器;93、经济器;94、膨胀机构;95、蒸发器;110、冷冻油。1. Compressor; 2. Drive assembly; 3. Compression assembly; 4. Expansion assembly; 5. Air supply passage; 6. Oil pump; 7. Oil baffle; 8. Exhaust line; 10. Exhaust chamber; , upper cover; 12, shell body; 13, lower cover; 14, lower cover; 15, lower flange; 16, lower partition; 17, middle partition; 18, upper partition; 19, upper flange; 22, motor rotor; 21, motor stator; 23, crankshaft; 31, primary compression structure; 310, first-stage cavity; 311, first-stage cylinder; 312, first-stage roller; 313, first suction port; , exhaust port; 32, secondary compression structure; 321, secondary cylinder; 322, secondary roller; 323, second suction port; 324, total exhaust port; 111, terminal; 41, first expansion Cylinder; 42, first roller; 411, third suction port; 43, total exhaust port; 44, first flange; 45, second flange; 46, partition; 47, second expansion cylinder; 48, second roller; 90, first cooler; 91, second cooler; 93, economizer; 94, expansion mechanism; 95, evaporator; 110, refrigeration oil.
具体实施方式Detailed ways
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效,以下结合附图及较佳实施例,对依据本发明申请的具体实施方式、结构、特征及其功效,详细说明如后。在下述说明中,不同的“一实施例”或“实施例”指的不一定是同一实施例。此外,一或多个实施例中的特定特征、结构、或特点可由任何合适形式组合。In order to further explain the technical means and functions of the present invention for achieving the intended purpose of the present invention, the specific embodiments, structures, features and functions according to the present application will be described in detail below with reference to the accompanying drawings and preferred embodiments. . In the following description, different "an embodiment" or "an embodiment" does not necessarily mean the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments can be combined in any suitable form.
实施例1Example 1
本实施例提供一种压缩机,如图1所示,本实施例的压缩机包括:壳体(其中,壳体由上盖11、壳身12及下盖13组成)及设置在壳体中的驱动组 件2、压缩组件及膨胀组件4。其中,压缩组件与驱动组件2驱动连接,用于在驱动组件2的驱动下对制冷剂进行多级压缩处理(在此的多级压缩处理指的是:气体从吸入压缩机开始,经过多次(至少两次)升压而达到所需要的工作压力)。膨胀组件4与驱动组件2连接;其中,膨胀组件4用于对经压缩组件压缩处理后的制冷剂进行膨胀处理,且驱动组件2能和膨胀组件4产生的动力共同驱动压缩组件。The embodiment provides a compressor. As shown in FIG. 1, the compressor of the embodiment includes: a casing (in which the casing is composed of an upper cover 11, a shell 12 and a lower cover 13) and is disposed in the casing. Drive component 2, compression assembly and expansion assembly 4. Wherein, the compression assembly is drivingly coupled to the driving assembly 2 for performing multi-stage compression processing on the refrigerant under the driving of the driving assembly 2 (the multi-stage compression processing herein refers to: the gas starts from the suction compressor, after many times (at least twice) boost to achieve the required working pressure). The expansion assembly 4 is coupled to the drive assembly 2; wherein the expansion assembly 4 is used to expand the refrigerant subjected to compression treatment by the compression assembly, and the drive assembly 2 can drive the compression assembly together with the power generated by the expansion assembly 4.
本实施例提供的压缩机能对制冷剂进行多级压缩处理,能减少每级压力差,降低泄漏量,提高压缩机的容积效率;同时通过膨胀组件对压缩处理后的制冷剂进行膨胀处理,并使驱动组件和制冷剂膨胀产生的动力共同驱动压缩组件,从而降低压缩机功耗。另外,对制冷剂进行多级压缩处理、对压缩处理后的制冷剂进行膨胀处理,并吸收膨胀功对压缩机及制冷循环装置的性能起到协同作用,使得压缩机及制冷循环装置的性能系数高。The compressor provided in this embodiment can perform multi-stage compression treatment on the refrigerant, can reduce the pressure difference of each stage, reduce the leakage amount, and improve the volumetric efficiency of the compressor; and simultaneously expand and compress the compressed refrigerant through the expansion component, and The power generated by the expansion of the drive assembly and the refrigerant drives the compression assembly together, thereby reducing compressor power consumption. In addition, multi-stage compression treatment of the refrigerant, expansion treatment of the compressed refrigerant, and absorption of expansion work synergize with the performance of the compressor and the refrigeration cycle device, so that the coefficient of performance of the compressor and the refrigeration cycle device high.
较佳地,压缩机还包括第一冷却器90;第一冷却器90设置在壳体之外其中,经压缩组件压缩处理后的制冷剂先通过第一冷却器90冷却后,再经膨胀组件4膨胀处理。这样设置,能避免压缩机的机身温度高,保护压缩机,还能提高膨胀组件的膨胀效率。第一冷却器90的进口、出口与压缩机1连接(具体地,第一冷却器90的进口与二级压缩结构的排气口连通、第一冷却器90的出口与膨胀组件的吸气口连通)。Preferably, the compressor further includes a first cooler 90; the first cooler 90 is disposed outside the casing, wherein the refrigerant compressed by the compression assembly is first cooled by the first cooler 90, and then expanded by the expansion assembly. 4 expansion treatment. This arrangement can avoid the high temperature of the compressor body, protect the compressor, and improve the expansion efficiency of the expansion assembly. The inlet and outlet of the first cooler 90 are connected to the compressor 1 (specifically, the inlet of the first cooler 90 is in communication with the exhaust port of the secondary compression structure, the outlet of the first cooler 90 and the suction port of the expansion assembly Connected).
较佳地,压缩机还包括补气通道5,用于向压缩机内补入气态制冷剂,通过这样设置,使得压缩机具有补气增焓功能,进一步能提高压缩机的容积效率和制冷量。Preferably, the compressor further includes a supplemental air passage 5 for replenishing the gaseous refrigerant into the compressor, and the compressor is provided with a function of supplementing the air and increasing the capacity, thereby further improving the volumetric efficiency and the cooling capacity of the compressor. .
另外,本实施例及下述实施例所述的压缩机主要以二氧化碳作为制冷剂。Further, the compressors of the present embodiment and the following embodiments mainly use carbon dioxide as a refrigerant.
实施例2Example 2
较佳地,本实施例提供一种压缩机,与上一实施例相比,如图1所示,本实施例进一步对压缩组件进行如下设计:Preferably, the present embodiment provides a compressor. Compared with the previous embodiment, as shown in FIG. 1, the embodiment further designs the compression component as follows:
本实施例中的压缩组件包括一级压缩结构31和二级压缩结构32。其中,一级压缩结构31对由蒸发器95的排出的制冷剂进行一级压缩处理;二级 压缩结构32对一级制冷剂进行二级压缩处理。其中,一级制冷剂包括由一级压缩结构31压缩处理后的制冷剂。较佳地,一级制冷剂还包括由补气通道5补入的制冷剂。较佳地,压缩机还包括第二冷却器91(第二冷却器91设置在壳体外,第二冷却器91的进口与压缩机1的一级制冷剂的排气口连通,第二冷却器91的出口与二级压缩结构连通);其中,一级制冷剂先通过第二冷却器91冷却后再经二级压缩结构32进行二级压缩处理。通过这样设置,能避免压缩机的机身温度高,保护压缩机。The compression assembly in this embodiment includes a primary compression structure 31 and a secondary compression structure 32. Among them, the primary compression structure 31 performs a first-stage compression treatment on the refrigerant discharged from the evaporator 95; the secondary compression structure 32 performs a secondary compression treatment on the primary refrigerant. Among them, the primary refrigerant includes a refrigerant that has been compressed by the primary compression structure 31. Preferably, the primary refrigerant further includes a refrigerant that is supplemented by the supplemental gas passage 5. Preferably, the compressor further includes a second cooler 91 (the second cooler 91 is disposed outside the casing, and the inlet of the second cooler 91 is in communication with the exhaust port of the primary refrigerant of the compressor 1, the second cooler The outlet of 91 is in communication with the secondary compression structure; wherein the primary refrigerant is first cooled by the second cooler 91 and then subjected to secondary compression by the secondary compression structure 32. By setting in this way, it is possible to avoid the high temperature of the compressor body and protect the compressor.
较佳地,如图1所示,本实施例中的一级压缩结构31、二级压缩结构32的具体结构设计如下:Preferably, as shown in FIG. 1, the specific structural design of the primary compression structure 31 and the secondary compression structure 32 in this embodiment is as follows:
一级压缩结构31包括:一级气缸311、一级滚子312及一级腔体310。一级气缸311上设有第一吸气口313和第一排气口;其中,第一吸气口313用于连通蒸发器95的排气口。一级滚子312安置在一级气缸311中,且一级滚子312在驱动组件2的驱动下配合一级气缸311对制冷剂进行一级压缩处理。一级腔体310与第一排气口连通,以使一级压缩后的制冷剂排放到一级腔体310中。如图1所示压缩机的结构,相对于二级压缩结构、膨胀组件,一级压缩结构31位于最下方,一级腔体310开设在下法兰15上,且一级腔体310由下法兰15与下盖板14围成的封闭腔体。The primary compression structure 31 includes a primary cylinder 311, a primary roller 312, and a primary cavity 310. The first air cylinder 311 is provided with a first air inlet 313 and a first air outlet; wherein the first air inlet 313 is used to communicate with the air outlet of the evaporator 95. The primary roller 312 is disposed in the primary cylinder 311, and the primary roller 312 is driven by the drive assembly 2 to cooperate with the primary cylinder 311 to perform a primary compression process on the refrigerant. The primary cavity 310 is in communication with the first exhaust port to discharge the primary compressed refrigerant into the primary cavity 310. The structure of the compressor shown in FIG. 1 is opposite to the secondary compression structure and the expansion assembly, the first-stage compression structure 31 is located at the bottom, the first-stage cavity 310 is opened on the lower flange 15, and the first-stage cavity 310 is formed by the following method. A closed cavity surrounded by the blue 15 and the lower cover 14.
二级压缩结构32包括:二级气缸321、二级滚子322及二级腔体。二级气缸上设有第二吸气口323和第二排气口;其中,第二吸气口323用于吸入一级制冷剂。二级滚子322安置在二级气缸321中,且二级滚子在驱动组件2的驱动下配合二级气缸321对制冷剂进行二级压缩处理。二级腔体与第二排气口连通,以使二级压缩后的制冷剂排放到二级腔体中。如图1所述压缩机的结构,二级腔体设置在中隔板17上,且由中隔板17和上隔板18围成的密封腔体,二级腔体用于储存二级压缩后的制冷剂,其上开设有二级压缩结构的总排气口324,以与第一冷却器90连通。The secondary compression structure 32 includes a secondary cylinder 321, a secondary roller 322, and a secondary cavity. The second cylinder is provided with a second suction port 323 and a second exhaust port; wherein the second intake port 323 is for drawing in the primary refrigerant. The secondary roller 322 is disposed in the secondary cylinder 321 and the secondary roller is driven by the drive assembly 2 to cooperate with the secondary cylinder 321 to perform secondary compression treatment of the refrigerant. The secondary cavity is in communication with the second exhaust port to discharge the secondary compressed refrigerant into the secondary cavity. As shown in the structure of the compressor of Fig. 1, the secondary cavity is disposed on the intermediate partition 17, and the sealed cavity is surrounded by the intermediate partition 17 and the upper partition 18, and the secondary cavity is used for storing the secondary compression. The latter refrigerant is provided with a total exhaust port 324 having a secondary compression structure to communicate with the first cooler 90.
较佳地,一级气缸311和二级气缸321的容积比为0.5-1.35;在此,通过冷冻工况的分析和验证结构,将一级气缸311和二级气缸321的容积比设置成0.5-1.35,有利于提高压缩机的性能。Preferably, the volume ratio of the primary cylinder 311 and the secondary cylinder 321 is 0.5-1.35; here, the volume ratio of the primary cylinder 311 and the secondary cylinder 321 is set to 0.5 by the analysis and verification structure of the freezing condition. -1.35, which is beneficial to improve the performance of the compressor.
较佳地,壳体上设置有排气管路8(较佳地,排气管路8设置在上盖 11上),且排气管路8与壳体的内腔(即,压缩机内腔)连通;在此,壳体为全封闭的结构。在此,有以下两种设计方案:图1所示压缩机结构为第一种方案,即,一级腔体310与壳体的内腔连通,且排气管路8用于连通第二冷却器91的进口、第二冷却器91的出口与二级气缸321上的第二吸气口323连通;对于该种方案,一级腔体310内的一级制冷剂依次从下到上经过一级气缸311、下隔板16、二级气缸321、中隔板17、上隔板18、第一膨胀气缸41、排气腔10及上法兰19上的流通通道进入壳体的内腔中。若制冷循环装置未设置第二冷却器时:如图8和图9所示的压缩机结构为第二种方案:一级腔体310与二级气缸321的第二吸气口连通,二级腔体与壳体的内腔连通,且排气管路8用于连通第一冷却器90的进口。如图8所示,一级腔体直接与二级气缸321的吸气口连通,二级压缩后的制冷剂进入二级腔体中,并依次经过第一膨胀气缸41、排气腔及上法兰上的流通通道进入壳体的内腔中。如图9所示,一级腔体上的排气口314直接通过压缩机外部通道与二级气缸321的第二吸气口323连通,经二级压缩后的制冷剂进入二级腔体中,并依次经过第一膨胀气缸41、排气腔及上法兰上的流通通道进入壳体的内腔中。Preferably, the housing is provided with an exhaust line 8 (preferably, the exhaust line 8 is disposed on the upper cover 11), and the exhaust line 8 and the inner chamber of the housing (ie, the compressor The chamber is connected; here, the housing is a fully enclosed structure. Here, there are two design schemes: the compressor structure shown in FIG. 1 is the first scheme, that is, the first-stage cavity 310 is in communication with the inner cavity of the casing, and the exhaust pipe 8 is used to communicate with the second cooling. The inlet of the device 91 and the outlet of the second cooler 91 are in communication with the second suction port 323 on the secondary cylinder 321; for this solution, the primary refrigerant in the primary cavity 310 is sequentially passed from bottom to top. The flow passages of the stage cylinder 311, the lower partition 16, the secondary cylinder 321, the intermediate partition 17, the upper partition 18, the first expansion cylinder 41, the exhaust chamber 10, and the upper flange 19 enter the inner cavity of the casing. . If the refrigeration cycle device is not provided with the second cooler: the compressor structure shown in FIGS. 8 and 9 is the second solution: the first cavity 310 is connected to the second suction port of the secondary cylinder 321, and the second The cavity is in communication with the interior of the housing and the exhaust line 8 is for communicating with the inlet of the first cooler 90. As shown in FIG. 8, the first-stage cavity directly communicates with the suction port of the secondary cylinder 321, and the secondary-compressed refrigerant enters the secondary cavity and sequentially passes through the first expansion cylinder 41, the exhaust cavity and the upper portion. The flow passage on the flange enters the interior of the housing. As shown in FIG. 9, the exhaust port 314 on the primary cavity directly communicates with the second intake port 323 of the secondary cylinder 321 through the external passage of the compressor, and the refrigerant after the secondary compression enters the secondary cavity. And sequentially passing through the flow passages on the first expansion cylinder 41, the exhaust chamber and the upper flange into the inner cavity of the housing.
较佳地,若排气管路8与一级腔体连通(如图1至图7、图10及图11),则补气通道5与一级腔体直接连通(如图1至图6、图10及图11);或补气通道与壳体的内腔直接连通(如图7所示,补气通道5直接设置在壳体上);或者可以与一级腔体和壳体内腔之间的流通通道连通。如图8和图9所示,若排气管路8与二级腔体连通,则补气通道5与一级腔体直接连通。Preferably, if the exhaust line 8 is in communication with the first-stage cavity (as shown in FIGS. 1 to 7 , 10 and 11 ), the supplemental air passage 5 is in direct communication with the primary cavity (see FIGS. 1 to 6 ). , Figure 10 and Figure 11); or the air supply channel is in direct communication with the inner cavity of the housing (as shown in Figure 7, the air supply channel 5 is directly disposed on the housing); or may be associated with the primary cavity and the housing cavity The circulation channels are connected. As shown in FIGS. 8 and 9, if the exhaust line 8 is in communication with the secondary chamber, the supplemental passage 5 is in direct communication with the primary chamber.
实施例3Example 3
较佳地,本实施例提供一种压缩机,与上述实施例相比,如图1至图11所示,本实施例主要对膨胀组件4进行如下设计:Preferably, the present embodiment provides a compressor. Compared with the above embodiment, as shown in FIG. 1 to FIG. 11 , the present embodiment mainly designs the expansion assembly 4 as follows:
本实施例中的膨胀组件4主要包括:第一膨胀气缸41和第一滚子42;其中,第一膨胀气缸41上设置有第三吸气口411和第三排气口。第一滚子42安置在第一膨胀气缸41中。第三吸气口411用于将经压缩组件多级压缩处理后的制冷剂吸入第一膨胀气缸41中;第一滚子42用于在驱动组件2的驱动下对吸入第一膨胀气缸41中的制冷剂进行膨胀处理;经膨胀处理后 的制冷剂由第三排气口排出。其中,当压缩机连接第一冷却器90时,第三吸气口411与第一冷却器的出口连接。在此,第一膨胀气缸不需要对制冷剂进行压缩,高压制冷剂在第一膨胀气缸内部的容积变化(由小变大)会从高压变成低压,制冷剂的状态由气态变成液态两相态,在状态改变过程中,制冷剂对第一膨胀气缸做功,可以回收部分损失功,提高压缩机的压缩效率。The expansion assembly 4 in this embodiment mainly includes: a first expansion cylinder 41 and a first roller 42; wherein the first expansion cylinder 41 is provided with a third suction port 411 and a third exhaust port. The first roller 42 is disposed in the first expansion cylinder 41. The third suction port 411 is for sucking the refrigerant subjected to the multi-stage compression processing of the compression assembly into the first expansion cylinder 41; the first roller 42 is for sucking into the first expansion cylinder 41 under the driving of the drive assembly 2 The refrigerant is subjected to expansion treatment; the refrigerant after expansion treatment is discharged from the third exhaust port. Wherein, when the compressor is connected to the first cooler 90, the third suction port 411 is connected to the outlet of the first cooler. Here, the first expansion cylinder does not need to compress the refrigerant, and the volume change (from small to large) of the high-pressure refrigerant inside the first expansion cylinder changes from high pressure to low pressure, and the state of the refrigerant changes from a gaseous state to a liquid state. In the phase state, during the state change process, the refrigerant works on the first expansion cylinder, and part of the lost work can be recovered, thereby improving the compression efficiency of the compressor.
较佳地,如图1至图9所示,膨胀组件还包括第一腔体,其中,第一腔体与第三排气口连通,且第一腔体上设置有第四排气口,该第四排气口作为膨胀组件的总排气口43,用于将膨胀组件膨胀处理后的制冷剂排到与压缩机连接的换热部件(如,经济器93)上。Preferably, as shown in FIG. 1 to FIG. 9 , the expansion assembly further includes a first cavity, wherein the first cavity is in communication with the third exhaust port, and the first cavity is provided with a fourth exhaust port. The fourth exhaust port serves as a total exhaust port 43 of the expansion assembly for discharging the refrigerant expanded by the expansion assembly to a heat exchange member (e.g., economizer 93) connected to the compressor.
较佳地,第一膨胀气缸41的吸气容积与膨胀容积比为2.0-5.55;通过冷冻工况的分析和验证结构,第一膨胀气缸41的吸气容积与膨胀容积比为2.0-5.55,有利于提高压缩机的性能。Preferably, the ratio of the suction volume to the expansion volume of the first expansion cylinder 41 is 2.0-5.55; the ratio of the suction volume to the expansion volume of the first expansion cylinder 41 is 2.0-5.55 by the analysis and verification structure of the freezing condition. Conducive to improve the performance of the compressor.
较佳地,如图11所示,膨胀组件还包括:第二膨胀气缸47和第二滚子48;其中,第二膨胀气缸47上设有第四吸气口和第五排气口;其中,第四吸气口与第五排气口连通;第二滚子48安置在第二膨胀气缸47中,且第二滚子48与驱动组件驱动连接。第五排气口作为膨胀组件的总排气口,用于将膨胀组件膨胀处理后的制冷剂排到与压缩机连接的换热部件(如,经济器93)上。Preferably, as shown in FIG. 11, the expansion assembly further includes: a second expansion cylinder 47 and a second roller 48; wherein the second expansion cylinder 47 is provided with a fourth suction port and a fifth exhaust port; The fourth suction port is in communication with the fifth exhaust port; the second roller 48 is disposed in the second expansion cylinder 47, and the second roller 48 is drivingly coupled to the drive assembly. The fifth exhaust port serves as a total exhaust port of the expansion assembly for discharging the refrigerant expanded by the expansion assembly to a heat exchange member (e.g., economizer 93) connected to the compressor.
本实施例中的膨胀组件可以为单缸膨胀形式(仅设置第一膨胀气缸)和双缸膨胀形式(同时设置第一膨胀气缸和第二膨胀气缸),在第一膨胀气缸的基础上进一步设置第二膨胀气缸,可以提高膨胀效率。另外本实施例通过设置膨胀气缸形式,使得膨胀效率比涡旋形式的高,生产工艺性好,成本低。The expansion assembly in this embodiment may be in the form of a single cylinder expansion (only the first expansion cylinder is provided) and the two-cylinder expansion form (the first expansion cylinder and the second expansion cylinder are simultaneously provided), and further set on the basis of the first expansion cylinder The second expansion cylinder can increase the expansion efficiency. In addition, in the embodiment, by setting the expansion cylinder form, the expansion efficiency is higher than that of the vortex form, the production processability is good, and the cost is low.
实施例4Example 4
较佳地,本实施例提供一种压缩机,与上述实施例相比,如图1所示,本实施例的驱动组件设计如下:驱动组件2包括电机,具体地,驱动组件包括驱动结构和曲轴23;驱动结构包括电机定子21、电机转子22;其中,压缩组件、膨胀组件套装在电机的曲轴23上。Preferably, the present embodiment provides a compressor. Compared with the above embodiment, as shown in FIG. 1, the driving assembly of the embodiment is designed as follows: the driving assembly 2 includes a motor, and specifically, the driving assembly includes a driving structure and The crankshaft 23; the driving structure comprises a motor stator 21 and a motor rotor 22; wherein the compression assembly and the expansion assembly are fitted on the crankshaft 23 of the motor.
电子定子21套装在电机转子22外,电机转子22套装在曲轴23上。接线柱111设置在圆弧形的上盖11上,通过电源线与电机定子21连接;当接线柱111通电后,电机定子21与电机转子22之间产生磁拉力,驱动装配在电机转子22中间的曲轴23高速旋转。曲轴23上设置有三个偏心部,在这三个偏心部分别装有一级滚子、二级滚子及第一滚子,分别在一级气缸、二级气缸及第一膨胀气缸内进行旋转压缩。The electronic stator 21 is fitted outside the motor rotor 22, and the motor rotor 22 is fitted over the crankshaft 23. The terminal 111 is disposed on the circular arc-shaped upper cover 11 and connected to the motor stator 21 through a power line; when the terminal 111 is energized, a magnetic pulling force is generated between the motor stator 21 and the motor rotor 22, and the drive is assembled in the middle of the motor rotor 22. The crankshaft 23 rotates at a high speed. The crankshaft 23 is provided with three eccentric portions, and the first eccentric portion is respectively equipped with a first-stage roller, a second-stage roller and a first roller, and is respectively rotated and compressed in the first-stage cylinder, the second-stage cylinder and the first expansion cylinder. .
较佳地,排气管路8的进口位于电机定子21、电机转子22的上方,以使壳体的腔体内的制冷剂在吸入排气管路8前先经过电机上的电机定子21和电机转子22,以对电机定子21、电机转子22进行冷却降温。Preferably, the inlet of the exhaust line 8 is located above the motor stator 21 and the motor rotor 22, so that the refrigerant in the chamber of the housing passes through the motor stator 21 and the motor on the motor before being sucked into the exhaust line 8. The rotor 22 cools and cools the motor stator 21 and the motor rotor 22.
较佳地,曲轴23上的在高于电机转子22的位置处安装有挡油板7(优选在曲轴23上的高于电机转子5mm的位置处),以分离冷冻油。另外,本实施例中的压缩机的底部设有蓄油池,底部充满冷冻油110;具体由泵体组件、壳体及下盖13组成,且曲轴23的下端连接有油泵6。Preferably, the oil deflector 7 (preferably at a position on the crankshaft 23 that is 5 mm higher than the rotor of the motor) is mounted on the crankshaft 23 at a position higher than the rotor 22 of the motor to separate the frozen oil. In addition, the bottom of the compressor in the embodiment is provided with an oil storage tank, and the bottom is filled with the refrigerating oil 110; specifically, the pump body assembly, the casing and the lower cover 13 are formed, and the lower end of the crankshaft 23 is connected with the oil pump 6.
实施例5Example 5
在上述实施例的基础上,本实施例进一步对图1至图11所示的压缩机结构详细进行如下说明:Based on the above embodiments, the present embodiment further details the structure of the compressor shown in FIGS. 1 to 11 as follows:
在此,先以如图1所示的压缩机的结构为例进行详细说明:如图1所示,图1所示的压缩机壳体为全封闭式的圆桶状密闭容器,收纳装配在壳体上部的驱动结构,容器下部的泵体组件。泵体组件包括压缩组件和膨胀组件4,压缩组件由两个独立一级压缩结构31和二级压缩结构32组成。一级压缩结构31包括一级气缸311、一级滚子312及由设置在下法兰15上的一级腔体310构成。二级压缩结构由二级气缸321、二级滚子322、及设置在中隔板17上的二级腔体构成(二级腔体由上隔板18与中隔板17形成密闭的空腔,用以存储二级气缸压缩后的制冷剂);在此,二级气缸321位于一级气缸311上,且一级气缸311和二级气缸321之间设置有下隔板16。膨胀组件4包括第一膨胀气缸41、第一滚子42、设置在排气腔10上的第一腔体(上法兰19与排气腔10之间形成密闭的空腔为第一腔体,用以存储第一膨胀气缸41膨胀后的制冷剂,在排气腔10的侧面有膨胀组件的总排气口43,与制冷系统的经济器相连接);其中,排气腔10上连接有上法 兰19,第一膨胀气缸41和中隔板17之间设置有上隔板18。压缩组件3与膨胀组件4同轴设计,制冷剂在膨胀组件内膨胀推动曲轴23旋转,将力矩传递到压缩组件3上。在中隔板17和下法兰15上均带有排气阀组件。在第一膨胀气缸41上面的上法兰19和排气腔10,在一级气缸311下面的下法兰15,均起到支撑、密封作用。Here, the structure of the compressor shown in FIG. 1 will be described in detail as an example. As shown in FIG. 1, the compressor casing shown in FIG. 1 is a fully enclosed drum-shaped closed container, and is housed and assembled. The drive structure on the upper part of the housing and the pump body assembly on the lower part of the container. The pump body assembly includes a compression assembly and an expansion assembly 4 that is comprised of two separate primary compression structures 31 and two secondary compression structures 32. The primary compression structure 31 includes a primary cylinder 311, a primary roller 312, and a primary cavity 310 disposed on the lower flange 15. The secondary compression structure is composed of a secondary cylinder 321, a secondary roller 322, and a secondary cavity disposed on the intermediate partition 17 (the secondary cavity is formed by the upper partition 18 and the intermediate partition 17 to form a closed cavity) For storing the refrigerant after compression of the secondary cylinder); here, the secondary cylinder 321 is located on the primary cylinder 311, and the lower partition 16 is disposed between the primary cylinder 311 and the secondary cylinder 321 . The expansion assembly 4 includes a first expansion cylinder 41, a first roller 42, and a first cavity disposed on the exhaust chamber 10 (a cavity formed between the upper flange 19 and the exhaust chamber 10 is a first cavity) For storing the expanded refrigerant of the first expansion cylinder 41, the total exhaust port 43 of the expansion assembly is connected to the economizer of the refrigeration system on the side of the exhaust chamber 10; wherein the exhaust chamber 10 is connected There is an upper flange 19, and an upper partition 18 is disposed between the first expansion cylinder 41 and the intermediate partition 17. The compression assembly 3 is designed coaxially with the expansion assembly 4, and the refrigerant expands within the expansion assembly to urge the crankshaft 23 to rotate, transmitting torque to the compression assembly 3. An exhaust valve assembly is provided on both the intermediate partition 17 and the lower flange 15. The upper flange 19 and the exhaust chamber 10 above the first expansion cylinder 41 and the lower flange 15 below the primary cylinder 311 serve to support and seal.
在一级气缸311侧面设有第一吸气口313,下法兰15侧面设有补气通道5,在二级气缸321侧面设有第二吸气口323,在第一膨胀气缸41的侧面设有第三吸气口411,在排气腔10的侧面设有第四排气口,作为膨胀组件的总排气口43,中隔板17的侧面设有二级压缩结构的总排气口324。另外,其中补气通道5即可以在下法兰15的侧面,也可以设置在一级气缸311、下隔板16、二级气缸321、中隔板17、上隔板18、第一膨胀气缸41、上法兰19的侧面(在下法兰15、一级气缸311、下隔板16、二级气缸321、中隔板17、上隔板18、第一膨胀气缸41、排气腔10、上法兰19上均有中间流通通道,通道的为圆形、弧形、方形或其余不规则形状。)。膨胀组件4的总排气口43、第一膨胀气缸41的第三吸气口411、二级压缩结构的总排气口324、二级气缸321的第二吸气口323、一级气缸311的第一吸气口313、补气通道5均焊接在壳体上,保证了压缩机的可靠性。下盖板14与下法兰15形成密闭的以及腔体,用以存储混合一级制冷剂(包括:一级气缸311压缩后的制冷剂和经济器93通过补气通道5补入的中压制冷剂)。A first air inlet 313 is disposed on a side of the first stage cylinder 311, a gas supply passage 5 is disposed on a side of the lower flange 15, and a second air inlet 323 is disposed on a side of the second cylinder 321 at a side of the first expansion cylinder 41. A third suction port 411 is provided, and a fourth exhaust port is provided on the side of the exhaust chamber 10 as the total exhaust port 43 of the expansion assembly, and the side of the intermediate partition plate 17 is provided with a total exhaust of the secondary compression structure. Port 324. In addition, the air supply passage 5 may be on the side of the lower flange 15, or may be disposed in the primary cylinder 311, the lower partition 16, the secondary cylinder 321, the intermediate partition 17, the upper partition 18, and the first expansion cylinder 41. The side surface of the upper flange 19 (in the lower flange 15, the primary cylinder 311, the lower partition 16, the secondary cylinder 321, the intermediate partition 17, the upper partition 18, the first expansion cylinder 41, the exhaust chamber 10, The flange 19 has intermediate flow passages which are circular, curved, square or irregular in shape. The total exhaust port 43 of the expansion assembly 4, the third intake port 411 of the first expansion cylinder 41, the total exhaust port 324 of the secondary compression structure, the second intake port 323 of the secondary cylinder 321, and the primary cylinder 311 The first air inlet 313 and the air supply passage 5 are welded to the casing to ensure the reliability of the compressor. The lower cover 14 and the lower flange 15 form a closed and cavity for storing the mixed primary refrigerant (including: the compressed refrigerant of the primary cylinder 311 and the intermediate pressure of the economizer 93 through the supplementary air passage 5) The refrigerant).
另外,油泵6安装在曲轴23的下端,随着曲轴23的旋转从蓄油池抽吸供油,并通过曲轴23内的流通孔将冷冻油送到各个摩擦副中,保证压缩机在各种工况下的良好润滑,提高压缩机的可靠性。Further, the oil pump 6 is attached to the lower end of the crankshaft 23, sucks oil from the oil storage tank as the crankshaft 23 rotates, and supplies the refrigerating oil to the respective friction pairs through the flow holes in the crankshaft 23, thereby ensuring various compressors. Good lubrication under working conditions improves the reliability of the compressor.
与图1所示压缩机的结构相比,图2至图6所示压缩机的结构中膨胀组件、一级压缩结构及二级压缩结构在壳体内上下的安置位置进行相应的调整。具体地,相对于图1所示的压缩机结构(图1中,从上到下依次设置膨胀组件、二级压缩结构、一级压缩结构),图2所示压缩机的结构仅仅将膨胀组件(第一膨胀气缸41、第一腔体)和二级压缩结构(二级气缸321、二级腔体)的位置进行调换一下(图2中,从上到下依次设置二级压缩结构、膨胀组件及一级压缩结构)。图3所示压缩机的结构在图1所示结构的 基础上,调换了一级压缩结构和二级压缩结构的位置(图3中,从上到下依次设置膨胀组件、一级压缩结构、二级压缩结构)。图4所示压缩机的结构在图2所示压缩机结构的基础上,又调换了一级压缩结构和二级压缩结构的位置(图4中,从上到下依次设置一级压缩结构、膨胀组件及二级压缩结构)。图5所示的压缩机结构在图2所示压缩机结构的基础上,又调换了膨胀组件和一级压缩结构的位置(图5中,从上到下依次设置二级压缩结构、一级压缩结构、膨胀组件)。图6所示的压缩机结构在图4所示压缩机结构的基础上,又调换了二级压缩结构和膨胀组件的位置(图6中,从上到下依次设置一级压缩结构、二级压缩结构及膨胀组件)。Compared with the structure of the compressor shown in Fig. 1, the expansion assembly, the primary compression structure and the secondary compression structure of the compressor shown in Fig. 2 to Fig. 6 are adjusted correspondingly in the upper and lower positions of the casing. Specifically, with respect to the compressor structure shown in FIG. 1 (the expansion assembly, the secondary compression structure, the primary compression structure are arranged in order from top to bottom in FIG. 1), the structure of the compressor shown in FIG. 2 only expands the assembly. The positions of the (first expansion cylinder 41, the first cavity) and the secondary compression structure (the secondary cylinder 321 and the secondary cavity) are exchanged (in FIG. 2, the secondary compression structure and the expansion are sequentially arranged from top to bottom). Components and primary compression structure). The structure of the compressor shown in FIG. 3 is based on the structure shown in FIG. 1, and the positions of the primary compression structure and the secondary compression structure are exchanged (in FIG. 3, the expansion assembly, the primary compression structure, and the first compression structure are arranged in order from top to bottom. Secondary compression structure). The structure of the compressor shown in FIG. 4 is based on the structure of the compressor shown in FIG. 2, and the positions of the primary compression structure and the secondary compression structure are replaced (in FIG. 4, the primary compression structure is sequentially arranged from top to bottom, Expansion assembly and secondary compression structure). The compressor structure shown in FIG. 5 is based on the structure of the compressor shown in FIG. 2, and the position of the expansion assembly and the primary compression structure is changed. (In FIG. 5, the secondary compression structure is set in order from top to bottom, Compression structure, expansion assembly). The compressor structure shown in Fig. 6 is based on the structure of the compressor shown in Fig. 4, and the position of the secondary compression structure and the expansion assembly is changed (in Fig. 6, the primary compression structure is set in order from top to bottom, Compression structure and expansion assembly).
图7所示的压缩机结构与图1所示压缩机结构相比,补气通道5的设置位置由直接与一级腔体连通,改为与壳体的内腔直接连通。The compressor structure shown in Fig. 7 is compared with the compressor structure shown in Fig. 1. The position of the air supply passage 5 is directly communicated with the first-stage cavity, and is directly communicated with the inner cavity of the casing.
图1至图7所示的压缩机中的排气管路排出的是第一级压力的制冷剂。The exhaust line in the compressor shown in Figs. 1 to 7 discharges the refrigerant of the first stage pressure.
图8所示的压缩机结构与图1所示的压缩机结构相比,一级压缩结构中的一级腔体直接与二级气缸的吸气口连通,二级腔体通过泵体组件内部中间流通通道与壳体的内腔连通。排气管路排出第二级压力的制冷剂。The compressor structure shown in FIG. 8 is compared with the compressor structure shown in FIG. 1. The first-stage cavity in the primary compression structure directly communicates with the suction port of the secondary cylinder, and the secondary cavity passes through the interior of the pump body assembly. The intermediate flow passage is in communication with the interior of the housing. The exhaust line discharges the refrigerant of the second stage pressure.
图9所示的压缩机结构与图8所示的压缩机结构相比,一级压缩结构中的一级腔体通过外部通道与二级气缸的吸气口连通,二级腔体通过泵体组件内部中间流通通道与壳体的内腔连通。排气管路排出的第二级压力的制冷剂。The compressor structure shown in FIG. 9 is compared with the compressor structure shown in FIG. 8. The first-stage cavity in the primary compression structure communicates with the suction port of the secondary cylinder through the external passage, and the secondary cavity passes through the pump body. The inner intermediate passage of the assembly is in communication with the interior of the housing. The second stage pressure refrigerant discharged from the exhaust line.
图1至图9所示的压缩机中的压缩组件、膨胀组件均位于驱动结构的下方。The compression assembly and the expansion assembly in the compressor shown in Figures 1 through 9 are all located below the drive structure.
图10所示的压缩机与图1所示的压缩机结构相比,膨胀组件安置在驱动结构的上方,且第一膨胀气缸41上下两侧通过法兰定位。The compressor shown in Fig. 10 is disposed above the drive structure in comparison with the compressor structure shown in Fig. 1, and the upper and lower sides of the first expansion cylinder 41 are positioned by flanges.
图11所示的压缩机在图10所示的压缩机的基础上,又在第一膨胀气缸41的基础上增加第二膨胀气缸47,第二膨胀气缸内设置有第二滚子48。第一膨胀气缸41和第二膨胀气缸47之间由隔板46隔开,在第一膨胀气缸41的上方设置有第一法兰44、在第二膨胀气缸47的下方设置有第二法兰45定位。The compressor shown in Fig. 11 is based on the compressor shown in Fig. 10, in addition to the first expansion cylinder 41, a second expansion cylinder 47 is provided, and a second roller 48 is disposed in the second expansion cylinder. The first expansion cylinder 41 and the second expansion cylinder 47 are separated by a partition 46. A first flange 44 is disposed above the first expansion cylinder 41, and a second flange is disposed below the second expansion cylinder 47. 45 positioning.
实施例6Example 6
如图1、图12至图15所示,本实施例的制冷循环装置包括上述任一实施例所述的压缩机1。As shown in Figs. 1 and 12 to 15, the refrigeration cycle apparatus of the present embodiment includes the compressor 1 described in any of the above embodiments.
具体地,制冷循环装置还包括蒸发器95;其中,蒸发器95的进口用于连通膨胀组件4的总排气口连通,蒸发器的出口用于连通压缩组件(一级压缩结构的吸气口)。Specifically, the refrigeration cycle apparatus further includes an evaporator 95; wherein an inlet of the evaporator 95 is used to communicate with a total exhaust port of the expansion assembly 4, and an outlet of the evaporator is used to communicate the compression assembly (the suction port of the primary compression structure) ).
较佳地,压缩机1包括补气通道5时,制冷循环装置还包括经济器93;其中,经济器93的进口与膨胀组件的总排气口连通。经济器93上设置有第一出口和第二出口,第一出口连通蒸发器95的进口,用于将液态制冷剂输送至蒸发器95;第二出口连通补气通道5,用于将闪发出的气态制冷剂通过补气通道5补入压缩机1中。较佳地,经济器93的作用是闪发出中压气态制冷剂。Preferably, when the compressor 1 includes the supplemental gas passage 5, the refrigeration cycle apparatus further includes an economizer 93; wherein the inlet of the economizer 93 is in communication with the total exhaust port of the expansion assembly. The economizer 93 is provided with a first outlet and a second outlet, the first outlet is connected to the inlet of the evaporator 95 for conveying the liquid refrigerant to the evaporator 95; the second outlet is connected to the supplemental passage 5 for flashing The gaseous refrigerant is supplied to the compressor 1 through the gas supply passage 5. Preferably, the economizer 93 functions to flash a medium pressure gaseous refrigerant.
较佳地,经济器93和蒸发器95之间连通的管路上还设置有膨胀机构94,用于降低制冷剂运行的动力。较佳地,膨胀机构94主要包括膨胀阀、膨胀机、节流阀等。Preferably, an expansion mechanism 94 is provided on the line communicating between the economizer 93 and the evaporator 95 for reducing the power of the refrigerant operation. Preferably, the expansion mechanism 94 mainly includes an expansion valve, an expander, a throttle valve, and the like.
较佳地,第一冷却器90、第二冷却器91的冷却方式可以是风冷,也可以是水冷。Preferably, the cooling mode of the first cooler 90 and the second cooler 91 may be air-cooled or water-cooled.
图1、图12所示制冷循环装置的工作原理如下:接线柱111通电后,电机定子21与电机转子22之间产生磁拉力,驱动装配在电机转子22中间的曲轴23高速旋转,曲轴23带有三个偏心部,在三个偏心部上分别装有一级滚子312、二级滚子322、第一滚子42,且一级滚子312、二级滚子322、第一滚子42分别在一级气缸311、二级气缸321、第一膨胀气缸41内进行旋转。一级气缸311从蒸发器95中吸入低温低压的制冷剂后,将一级压缩后的制冷剂排到下盖板14与下法兰15形成一级腔体310中,经济器93闪发出的中压制冷剂通过补气通道5,同时进入一级腔体310,与经一级压缩后的制冷剂进行混合后通过一级气缸311、下隔板16、二级气缸321、中隔板17、上隔板18、第一膨胀气缸41、排气腔10、上法兰19的中间流通通道进入到压缩机壳体的内腔中,壳体内部的压力为第一级排气压力,并对电机定子与电机转子进行冷却降温,同时挡油板7对制冷剂进行油气分离, 分离后的制冷剂通过排气管路8到第二冷却器91进行冷却后,通过二级气缸321上的第二吸气口323进入二级气缸321中进行压缩,二级压缩后的制冷剂通过二级压缩结构的总排气口324进入到第一冷却器90中进行放热,然后放热后的制冷剂通过第一膨胀气缸41的第三吸气口411进入到第一膨胀气缸41中进行制冷剂膨胀,在第一膨胀气缸41内形成低压两相制冷剂,最后通过膨胀组件的总排气口43的进入到经济器93中,部分制冷剂在此闪发出中压气态制冷剂由补气通道5喷射进压缩机1的内部,余下的液态制冷剂,通过膨胀机构94降压后,进入蒸发器95吸热形成气态制冷剂,最后进入压缩机,由此形成制冷循环。The working principle of the refrigeration cycle apparatus shown in FIG. 1 and FIG. 12 is as follows: after the terminal 111 is energized, a magnetic pulling force is generated between the motor stator 21 and the motor rotor 22, and the crankshaft 23 assembled in the middle of the motor rotor 22 is driven to rotate at a high speed, and the crankshaft 23 is rotated. There are three eccentric portions, and the first eccentric roller 312, the second roller 322, and the first roller 42 are respectively mounted on the three eccentric portions, and the primary roller 312, the secondary roller 322, and the first roller 42 are respectively The first cylinder 311, the secondary cylinder 321, and the first expansion cylinder 41 rotate. After the first stage cylinder 311 sucks the low temperature and low pressure refrigerant from the evaporator 95, the first stage compressed refrigerant is discharged to the lower cover 14 and the lower flange 15 to form the first stage cavity 310, and the economizer 93 flashes. The medium-pressure refrigerant passes through the air supply passage 5, enters the first-stage cavity 310 at the same time, and is mixed with the first-stage compressed refrigerant to pass through the first-stage cylinder 311, the lower partition plate 16, the second-stage cylinder 321, and the intermediate partition plate 17. The intermediate flow passage of the upper partition 18, the first expansion cylinder 41, the exhaust chamber 10, and the upper flange 19 enters into the inner cavity of the compressor casing, and the pressure inside the casing is the first-stage exhaust pressure, and Cooling and cooling the motor stator and the motor rotor, and the oil deflector 7 performs oil and gas separation on the refrigerant, and the separated refrigerant is cooled by the exhaust pipe 8 to the second cooler 91, and then passed through the secondary cylinder 321 The second suction port 323 enters the secondary cylinder 321 for compression, and the secondary compressed refrigerant enters the first cooler 90 through the total exhaust port 324 of the secondary compression structure for heat release, and then the heat is released. The refrigerant enters the third intake port 411 of the first expansion cylinder 41 The expansion of the refrigerant in the expansion cylinder 41 causes a low-pressure two-phase refrigerant to be formed in the first expansion cylinder 41, and finally enters the economizer 93 through the total exhaust port 43 of the expansion assembly, and a portion of the refrigerant flashes the intermediate pressure therein. The gaseous refrigerant is injected into the interior of the compressor 1 from the supplementary gas passage 5, and the remaining liquid refrigerant is depressurized by the expansion mechanism 94, then enters the evaporator 95 to absorb heat to form a gaseous refrigerant, and finally enters the compressor, thereby forming refrigeration. cycle.
对于图13所示的制冷循环装置(与图8、图9所示的压缩机对应),与图1和图12的制冷循环装置的不同之处在于:未设置第二冷却器,一级制冷剂不进入压缩机的壳体内腔中,而是直接进入二级气缸321中进行二级压缩,因此没有一级压缩后进行中间冷却这路制冷循环。The refrigeration cycle apparatus shown in FIG. 13 (corresponding to the compressors shown in FIGS. 8 and 9) is different from the refrigeration cycle apparatus of FIGS. 1 and 12 in that the second cooler is not provided, and the first stage refrigeration The agent does not enter the inner cavity of the casing of the compressor, but directly enters the secondary cylinder 321 for secondary compression, so there is no intermediate refrigeration for the intermediate refrigeration cycle.
对于图14所示的制冷循环装置,与图1和图12所示的制冷循环装置的不同之处在于:膨胀组件为双缸膨胀单元;制冷剂在二级压缩结构压缩处理后,先进入第一膨胀气缸进行膨胀处理、再进入第二膨胀气缸进行膨胀处理。The refrigeration cycle device shown in FIG. 14 is different from the refrigeration cycle device shown in FIG. 1 and FIG. 12 in that the expansion assembly is a two-cylinder expansion unit; after the refrigerant is compressed in the secondary compression structure, the refrigerant enters the first An expansion cylinder performs expansion treatment and then enters the second expansion cylinder for expansion treatment.
对于图15所示的制冷循环装置,与图14的不同之处在于,未设置第二冷却器,一级制冷剂不进入压缩机的壳体内腔中,而是直接进入二级气缸321中进行二级压缩,因此没有一级压缩后进行中间冷却这路制冷循环。For the refrigeration cycle apparatus shown in FIG. 15, the difference from FIG. 14 is that the second cooler is not provided, and the primary refrigerant does not enter the casing inner cavity of the compressor, but directly enters the secondary cylinder 321 Secondary compression, so there is no primary compression and then intermediate cooling this refrigeration cycle.
另外,参见图16所示,图16为本发明实施例提供的制冷系统的压焓图。其中,5-6h表示等焓膨胀(节流阀实现),5-6S表示等熵膨胀(理想状况,实际难以实现),5-6表示实际膨胀机膨胀过程,焓差5-6h表示单位质量制冷剂膨胀回收能量。In addition, referring to FIG. 16, FIG. 16 is a pressure diagram of a refrigeration system according to an embodiment of the present invention. Among them, 5-6h means equal enthalpy expansion (throttle valve realization), 5-6S means isentropic expansion (ideal situation, practically difficult to achieve), 5-6 means actual expander expansion process, 焓 difference 5-6h means unit mass The refrigerant expands to recover energy.
综上所述,本发明实施例提供的压缩机及制冷循环装置为双级压缩带级间补气增焓结构形式,相比单级压缩,能减小每级压力差,降低泄漏量,提高压缩机的容积效率和制冷量;同时通过膨胀组件回收膨胀功,降低压缩机功耗,提高压缩机和循环系统的性能系数;以及可以使跨临界循环制冷装置的性能系数得到较大幅度的提升。In summary, the compressor and the refrigeration cycle device provided by the embodiments of the present invention are two-stage compression zone inter-stage gas-enhanced structure, which can reduce the pressure difference of each stage, reduce the leakage amount, and improve the single-stage compression. The volumetric efficiency and cooling capacity of the compressor; at the same time, the expansion work is recovered by the expansion component, the power consumption of the compressor is reduced, the coefficient of performance of the compressor and the circulation system is improved; and the coefficient of performance of the transcritical cycle refrigeration device can be greatly improved. .
以上所述,仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still in the present invention. Within the scope of the inventive solution.

Claims (19)

  1. 一种压缩机,其特征在于,所述压缩机包括:A compressor, characterized in that the compressor comprises:
    壳体;case;
    驱动组件,设置在所述壳体中;a drive assembly disposed in the housing;
    压缩组件,设置在所述壳体中,且所述压缩组件与所述驱动组件驱动连接,用于在所述驱动组件的驱动下对制冷剂进行多级压缩处理;a compression assembly disposed in the housing, and the compression assembly is drivingly coupled to the drive assembly for performing multi-stage compression processing of the refrigerant under the driving of the drive assembly;
    膨胀组件,设置在所述壳体中,且所述膨胀组件与所述驱动组件连接;其中,所述膨胀组件用于对经所述压缩组件压缩处理后的制冷剂进行膨胀处理。An expansion assembly disposed in the housing, and the expansion assembly is coupled to the drive assembly; wherein the expansion assembly is configured to expand a refrigerant processed by the compression assembly.
  2. 根据权利要求1所述的压缩机,其特征在于,所述压缩机还包括第一冷却器;其中,The compressor according to claim 1, wherein said compressor further comprises a first cooler;
    经所述压缩组件压缩处理后的制冷剂先通过所述第一冷却器冷却后,再经所述膨胀组件膨胀处理。The refrigerant compressed by the compression assembly is first cooled by the first cooler, and then expanded by the expansion assembly.
  3. 根据权利要求1所述的压缩机,其特征在于,所述压缩组件包括:The compressor of claim 1 wherein said compression assembly comprises:
    一级压缩结构,所述一级压缩结构对由蒸发器排出的制冷剂进行一级压缩处理;a primary compression structure, wherein the primary compression structure performs a first-stage compression treatment on the refrigerant discharged from the evaporator;
    二级压缩结构,所述二级压缩结构对一级制冷剂进行二级压缩处理;其中,所述一级制冷剂包括经所述一级压缩结构一级压缩处理后的制冷剂。a secondary compression structure, the secondary compression structure performs a secondary compression treatment on the primary refrigerant; wherein the primary refrigerant includes a refrigerant that is first-stage compressed by the primary compression structure.
  4. 根据权利要求3所述的压缩机,其特征在于,所述压缩机包括补气通道,用于向压缩机内补入气态制冷剂;The compressor according to claim 3, wherein said compressor includes a supplemental air passage for replenishing a gaseous refrigerant into said compressor;
    其中,所述一级制冷剂还包括由所述补气通道补入的制冷剂。Wherein, the primary refrigerant further includes a refrigerant supplemented by the supplementary gas passage.
  5. 根据权利要求3所述的压缩机,其特征在于,所述压缩机还包括第二冷却器;其中,The compressor according to claim 3, wherein said compressor further comprises a second cooler; wherein
    所述一级制冷剂先通过所述第二冷却器冷却后再经所述二级压缩结构进行二级压缩处理。The primary refrigerant is first cooled by the second cooler and then subjected to a secondary compression treatment by the secondary compression structure.
  6. 根据权利要求3-5中任一项所述的压缩机,其特征在于,所述一级压缩结构包括:The compressor according to any one of claims 3 to 5, wherein the primary compression structure comprises:
    一级气缸,所述一级气缸上设有第一吸气口和第一排气口;其中,所述第一吸气口用于连通蒸发器的出口;a first stage cylinder, wherein the first stage cylinder is provided with a first air inlet and a first air outlet; wherein the first air inlet is used to communicate with an outlet of the evaporator;
    一级滚子,所述一级滚子安置在所述一级气缸中,且所述一级滚子在所述驱动组件的驱动下配合一级气缸对制冷剂进行一级压缩处理;a first-stage roller, wherein the first-stage roller is disposed in the first-stage cylinder, and the first-stage roller is subjected to a first-stage compression treatment of the refrigerant by the first-stage cylinder under the driving of the driving component;
    一级腔体,所述一级腔体与所述第一排气口连通,以使一级压缩后的制冷剂排放到所述一级腔体中。a first-stage cavity that communicates with the first exhaust port to discharge the first-stage compressed refrigerant into the first-stage cavity.
  7. 根据权利要求6所述的压缩机,其特征在于,所述二级压缩结构包括:The compressor according to claim 6, wherein said secondary compression structure comprises:
    二级气缸,所述二级气缸上设有第二吸气口和第二排气口;其中,所述第二吸气口将一级制冷剂吸入所述二级气缸中;a second cylinder, wherein the second cylinder is provided with a second suction port and a second exhaust port; wherein the second intake port draws the primary refrigerant into the secondary cylinder;
    二级滚子,所述二级滚子安置在所述二级气缸中,且所述二级滚子在所述驱动组件的驱动下配合二级气缸对一级制冷剂进行二级压缩处理;a secondary roller, wherein the secondary roller is disposed in the secondary cylinder, and the secondary roller is driven by the driving component to cooperate with the secondary cylinder to perform secondary compression treatment on the primary refrigerant;
    二级腔体,所述二级腔体与所述第二排气口连通,以使二级压缩后的制冷剂排放到所述二级腔体中。a secondary cavity, the secondary cavity being in communication with the second exhaust port to discharge secondary compressed refrigerant into the secondary cavity.
  8. 根据权利要求7所述的压缩机,其特征在于,所述一级气缸和二级气缸的容积比为0.5-1.35。The compressor according to claim 7, wherein the primary cylinder and the secondary cylinder have a volume ratio of 0.5 to 1.35.
  9. 根据权利要求7所述的压缩机,其特征在于,所述壳体上设置有排气管路,且所述排气管路与所述壳体的内腔连通;其中,The compressor according to claim 7, wherein the housing is provided with an exhaust line, and the exhaust line is in communication with the inner cavity of the housing;
    当压缩机包括第二冷却器时,所述一级腔体与所述壳体的内腔连通,且所述排气管路用于连通第二冷却器的进口,第二冷却器的出口与所述二级气缸上的第二吸气口连通;或The first stage cavity is in communication with the inner cavity of the housing when the compressor includes the second cooler, and the exhaust line is for communicating with the inlet of the second cooler, and the outlet of the second cooler is a second suction port on the secondary cylinder is connected; or
    所述一级腔体与所述二级气缸上的第二吸气口连通,所述二级腔体与所述壳体的内腔连通,且所述排气管路用于连通第一冷却器的进口。The first stage cavity is in communication with a second suction port on the secondary cylinder, the secondary cavity is in communication with a lumen of the housing, and the exhaust line is configured to communicate with the first cooling Import of the device.
  10. 根据权利要求1-5中任一项所述的压缩机,其特征在于,所述膨胀组件包括:A compressor according to any one of claims 1 to 5, wherein the expansion assembly comprises:
    第一膨胀气缸,所述第一膨胀气缸上设置有第三吸气口和第三排气口;a first expansion cylinder, the first expansion cylinder is provided with a third suction port and a third exhaust port;
    第一滚子,所述第一滚子安置在所述第一膨胀气缸中;a first roller, the first roller being disposed in the first expansion cylinder;
    其中,所述第三吸气口用于将经所述压缩组件多级压缩处理后的制冷剂吸入所述第一膨胀气缸中;所述第一滚子用于在所述驱动组件的驱动下对吸入所述第一膨胀气缸中的制冷剂进行膨胀处理;经膨胀处理后的制冷剂由所述第三排气口排出;Wherein the third suction port is configured to suck the refrigerant subjected to the multi-stage compression treatment by the compression assembly into the first expansion cylinder; the first roller is used to be driven by the drive assembly Performing an expansion treatment on the refrigerant sucked into the first expansion cylinder; the refrigerant after the expansion treatment is discharged from the third exhaust port;
    其中,当所述压缩机连接第一冷却器时,所述第三吸气口与第一冷却器的出口连接。Wherein, when the compressor is connected to the first cooler, the third suction port is connected to an outlet of the first cooler.
  11. 根据权利要求10所述的压缩机,其特征在于,所述膨胀组件还包括第一腔体,其中,The compressor according to claim 10, wherein said expansion assembly further comprises a first cavity, wherein
    所述第一腔体与所述第三排气口连通,且所述第一腔体上设置有第四排气口,以将膨胀组件膨胀处理后的制冷剂排到与压缩机连接的换热部件上。The first cavity is in communication with the third exhaust port, and the first cavity is provided with a fourth exhaust port to discharge the refrigerant after the expansion assembly expansion process to the compressor connection On the hot part.
  12. 根据权利要求10所述的压缩机,其特征在于,所述第一膨胀气缸的吸气容积与膨胀容积比为2.0-5.55。The compressor according to claim 10, wherein said first expansion cylinder has an intake volume to expansion volume ratio of from 2.0 to 5.55.
  13. 根据权利要求10所述的压缩机,其特征在于,所述膨胀组件还包括:The compressor according to claim 10, wherein the expansion assembly further comprises:
    第二膨胀气缸,所述第二膨胀气缸上设有第四吸气口和第五排气口;其中,所述第四吸气口与所述第三排气口连通;a second expansion cylinder, wherein the second expansion cylinder is provided with a fourth suction port and a fifth exhaust port; wherein the fourth intake port is in communication with the third exhaust port;
    第二滚子,所述第二滚子安置在所述第二膨胀气缸中,且所述第二滚子与所述驱动组件驱动连接。a second roller, the second roller being disposed in the second expansion cylinder, and the second roller being drivingly coupled to the drive assembly.
  14. 根据权利要求1-5中任一项所述的压缩机,其特征在于,所述驱动组件包括曲轴和用于驱动曲轴运转的驱动结构;所述驱动结构包括电机定子、电机转子;其中,A compressor according to any one of claims 1 to 5, wherein the drive assembly comprises a crankshaft and a drive structure for driving the operation of the crankshaft; the drive structure comprises a motor stator, a motor rotor;
    所述压缩组件、膨胀组件套装在所述曲轴上;The compression assembly and the expansion assembly are assembled on the crankshaft;
    其中,当所述壳体上设置有排气管路时,所述壳体的腔体内的制冷剂在吸入排气管路前先经过所述驱动结构,以对驱动结构进行冷却降温。Wherein, when the exhaust pipe is disposed on the casing, the refrigerant in the cavity of the casing passes through the driving structure before being sucked into the exhaust pipe to cool and cool the driving structure.
  15. 根据权利要求14所述的压缩机,其特征在于,所述曲轴上的在高于所述驱动结构位置处安装有挡油板,用于分离制冷剂中的冷冻油;和/或The compressor according to claim 14, wherein a baffle plate is mounted on the crankshaft at a position higher than the drive structure for separating refrigerant oil in the refrigerant; and/or
    所述膨胀组件位于所述驱动结构的上方;或所述膨胀组件位于所述驱动结构的下方。The expansion assembly is located above the drive structure; or the expansion assembly is located below the drive structure.
  16. 一种制冷循环装置,其特征在于,所述制冷循环装置包括权利要求1-15任一项所述的压缩机。A refrigeration cycle apparatus characterized by comprising the compressor according to any one of claims 1 to 15.
  17. 根据权利要求16所述的制冷循环装置,其特征在于,所述制冷循 环装置还包括:The refrigeration cycle apparatus according to claim 16, wherein the refrigeration cycle device further comprises:
    蒸发器,所述蒸发器的进口用于连通所述膨胀组件连通,所述蒸发器的出口用于连通所述压缩组件。An evaporator, an inlet of the evaporator for communicating with the expansion assembly, an outlet of the evaporator for communicating the compression assembly.
  18. 根据权利要求17所述的制冷循环装置,其特征在于,当所述压缩机包括补气通道时,所述制冷循环装置还包括经济器;其中,The refrigeration cycle apparatus according to claim 17, wherein when said compressor includes an air supply passage, said refrigeration cycle apparatus further includes an economizer;
    所述经济器的进口与所述膨胀组件连通;An inlet of the economizer is in communication with the expansion assembly;
    所述经济器上设置有第一出口和第二出口,所述第一出口连通所述蒸发器的进口,用于将液态制冷剂输送至蒸发器;所述第二出口连通所述补气通道,用于将闪发出的气态制冷剂通过补气通道补入压缩机中。The economizer is provided with a first outlet communicating with an inlet of the evaporator for conveying liquid refrigerant to the evaporator, and a second outlet communicating with the supplemental passage It is used to charge the flashed gaseous refrigerant into the compressor through the air supply passage.
  19. 根据权利要求18所述的制冷循环装置,其特征在于,A refrigeration cycle apparatus according to claim 18, wherein
    所述经济器和蒸发器之间连通的管路上还设置有膨胀机构,用于降低制冷剂运行的动力。An expansion mechanism is also provided on the pipeline communicating between the economizer and the evaporator for reducing the power of the refrigerant operation.
PCT/CN2018/090667 2017-12-22 2018-06-11 Compressor and refrigeration circulation device WO2019119739A1 (en)

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