WO2020124880A1 - Compresseur linéaire - Google Patents

Compresseur linéaire Download PDF

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Publication number
WO2020124880A1
WO2020124880A1 PCT/CN2019/082069 CN2019082069W WO2020124880A1 WO 2020124880 A1 WO2020124880 A1 WO 2020124880A1 CN 2019082069 W CN2019082069 W CN 2019082069W WO 2020124880 A1 WO2020124880 A1 WO 2020124880A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
stepped
hole
hollow
linear motor
Prior art date
Application number
PCT/CN2019/082069
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English (en)
Chinese (zh)
Inventor
唐明生
邹慧明
田长青
Original Assignee
中国科学院理化技术研究所
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Publication of WO2020124880A1 publication Critical patent/WO2020124880A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections

Definitions

  • the embodiments of the present invention relate to the technical field of compressors, and in particular, to a linear compressor.
  • the linear compressor driven by a linear motor reduces the motion conversion device and greatly improves the efficiency of the compressor. It has the advantages of compact structure, light weight, no oil or less lubricant, and excellent variable capacity characteristics. It is getting more and more widely. Has become a major development direction for high-efficiency compressors for small refrigeration equipment.
  • the linear compressor in the prior art will arrange the compression chamber formed by the cylinder, the piston and other components on the outside of the cylindrical linear motor, and use low temperature and low pressure gas to compress the inside and outside of the linear motor and compress The outer side of the cavity dissipates heat, which improves the efficiency and reliability of the linear compressor.
  • the cylinder and the piston are externally required for the coaxial precision of assembly, there is a greater risk of the compressor piston and the cylinder jamming. Therefore, in view of the above deficiencies, it is necessary to provide a linear compressor with high compression efficiency, low noise, and small external dimensions.
  • the object of the present invention is to provide a linear compressor to solve the above problems.
  • the first aspect of the present invention provides a linear compressor, including: a linear motor, a hollow stepped shaft piston and a stepped hole cylinder; the stepped hole cylinder is provided with a bearing hole of the linear motor; One end of the hollow stepped shaft piston is provided inside the linear motor and fixedly connected to the mover of the linear motor; the hollow stepped shaft piston slides linearly along the axial direction of the bearing hole, and the hollow stepped shaft piston The other end of the shaft penetrates the linear motor through the bearing hole and is inserted into the stepped hole cylinder to form a compression space inside the stepped hole cylinder; the shape of the hollow stepped shaft piston is a cylinder, the cylinder There is a hollow cavity inside, and a small hole is provided on the side of the cylinder, and the small hole communicates with the hollow cavity to form an air suction channel.
  • annular groove for lubricating oil flow is provided inside the stepped hole cylinder, and a first oil groove and a second oil groove are provided on the outer surface of the stepped hole cylinder; the annular groove and the first oil groove and the The second oil tank communicates.
  • a heat dissipation sleeve the heat dissipation sleeve is fixedly connected with the stepped hole cylinder, one end of the heat dissipation sleeve is sleeved on the outer surface of the stepped hole cylinder, and the inner stator of the linear motor is sleeved on the The outer surface of the other end of the heat dissipation sleeve; the heat dissipation sleeve is provided with a first oil passage hole, the first oil passage hole cooperates with the first oil groove and the second oil groove to form a linear compressor lubricating oil in the stepped hole Flow channel outside the cylinder.
  • first resonance spring and a second resonance spring further includes: a first resonance spring and a second resonance spring; the first resonance spring and the second resonance spring are sleeved on the outer surface of the hollow stepped shaft piston, and the first resonance spring and the second The resonant springs are respectively arranged on both sides of the bearing hole.
  • a spring connector is cylindrical, fixedly connected to the linear motor mover, and the spring connector is sleeved on the outside of one end of the hollow stepped shaft piston and One end of the hollow stepped shaft piston is connected, one end of the first resonance spring is connected to the spring connector, the other end of the first resonance spring is connected to one side of the bearing hole, and the second resonance spring One end is connected to the other side of the bearing hole, and the other end of the second resonance spring is connected to the other end of the hollow stepped shaft piston.
  • the linear motor further includes: a first connector and a second connector; the first connector and the second connector are disposed on an outer surface of the heat dissipation sleeve, and the first connector and The second connector fixes the outer stator of the linear motor on the outer surface of the heat dissipation sleeve.
  • the oil pump is fixedly connected to the first connector, the oil pump is connected to the cylindrical oil hole of the first connector, and lubricating oil is pumped into the cylinder of the first connector through the oil pump After the oil hole on the surface, it enters the first oil path formed by the inner hole of the cooling sleeve and the cylindrical surface of the cylinder of the stepped hole, and then enters the internal oil groove of the cylinder of the stepped hole, and cooperates with the outer cylindrical surface of the cylinder of the stepped hole through the inner hole of the cooling sleeve The formed second oil passage flows out.
  • both the inner stator and the outer stator are hollow cylindrical; and the inner stator and the outer stator are coaxially arranged; the outer stator (2) is provided with an excitation coil (3), the The outer stator (4) is wrapped around the circumference of the exciting coil (3).
  • the shape of the mover is a cup-shaped cylinder, and the bottom of the cup-shaped cylinder is provided with an opening and connected to the spring connector. , The mover (5) is located in the air gap between the inner stator (2) and the outer stator (4).
  • an exhaust device is provided at one end of the stepped hole cylinder outer surface away from the linear motor, and an air suction device is provided on the other side of the stepped hollow stepped shaft piston.
  • the invention provides a linear compressor, including: a linear motor, a hollow stepped shaft piston and a stepped hole cylinder; the stepped hole cylinder is provided with a bearing hole of the linear motor; one end of the hollow stepped shaft piston is provided on the The inside of the linear motor and fixedly connected to the mover of the linear motor; the hollow stepped shaft piston slides linearly along the axial direction of the bearing hole, and the other end of the hollow stepped shaft piston passes through the bearing hole
  • the linear motor is inserted into the stepped hole cylinder to form a compression space inside the stepped hole cylinder; the hollow stepped shaft piston is shaped as a cylinder, the cylinder has a hollow cavity inside, and the cylinder A small hole is provided on the side, and the small hole communicates with the hollow cavity to form a suction air flow channel.
  • the linear compressor provided by the embodiment of the present invention places the resonance spring inside the linear motor, which can effectively use the internal space of the motor and reduce the external dimensions of the linear compressor; the stepped cylinder is used to form the stepped cylinder and the motor bearing hole It can effectively avoid the phenomenon that the cylinder of the stepped hole cylinder and the hollow stepped shaft piston are externally stuck.
  • the space formed by the stepped hole cylinder stepped hole, the hollow stepped shaft piston stepped shaft and the small end cylindrical hole of the stepped hollow stepped shaft piston constitute the suction
  • the air hole muffler cavity can effectively reduce the suction noise.
  • the space formed by the cooperation of the hollow stepped shaft piston and the bearing hole of the cylinder motor can achieve the effect of suction pre-compression during the suction process, which can reduce the reduction of exhaust gas caused by the density reduction caused by the overheating of the refrigerant, and effectively increase the compressor suction Increase the compressor displacement and cooling capacity.
  • FIG. 1 is a schematic cross-sectional structure view of a linear compressor according to a first embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional structure view of a linear compressor according to an alternative embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a left side view of a linear compressor according to an alternative embodiment of the present invention.
  • FIG. 1 A schematic diagram of a layer structure according to an embodiment of the present invention is shown in the drawings. These figures are not drawn to scale, and some details have been enlarged for clarity and some details may have been omitted.
  • the shapes of the various regions and layers shown in the figure, as well as their relative sizes and positional relationships, are only exemplary, and may be deviated due to manufacturing tolerances or technical limitations in practice. Areas/layers with different shapes, sizes and relative positions can be additionally designed.
  • a linear compressor including: a linear motor, a hollow stepped shaft piston 10 and a stepped hole cylinder 12; the hollow stepped shaft piston 10 is two in appearance Two coaxial cylinders with different diameters are combined, and the inside of the piston is hollow. The side of the cylinder is provided with small holes.
  • the stepped hole cylinder 12 is matched with the hollow stepped shaft piston. There are two chambers and two chambers. The chamber communicates through the bearing hole.
  • the stepped hole cylinder 12 is provided with a bearing hole of the linear motor; one end of the hollow stepped shaft piston 10 is provided inside the linear motor and is fixedly connected to the mover 5 of the linear motor; The hollow stepped shaft piston 10 slides linearly along the axial direction of the bearing hole, and the other end of the hollow stepped shaft piston 10 passes through the bearing hole through the linear motor and is inserted into the stepped hole cylinder 12 at the stepped hole A compression space is formed inside the cylinder 12; the shape of the hollow stepped shaft piston 10 is a cylinder, and the cylinder has a hollow cavity inside, and a small hole is provided on the side of the cylinder, the small hole and the hollow cavity Connected to form a suction flow channel.
  • the space formed by the hollow stepped shaft piston 10 and the bearing hole of the cylinder motor can achieve the effect of suction pre-compression during the suction process, which can reduce the reduction of exhaust gas caused by the reduction of density due to refrigerant overheating, and effectively increase the compressor suction. Air volume, increase compressor displacement and cooling capacity.
  • annular groove for lubricating oil is opened inside the stepped hole cylinder 12, and a first oil groove and a second oil groove are provided on the outer surface of the stepped hole cylinder 12; the annular groove and the first oil groove are respectively It communicates with the second oil tank.
  • a heat dissipation sleeve 11 the heat dissipation sleeve 11 is fixedly connected to the stepped hole cylinder 12, one end of the heat dissipation sleeve 11 is sleeved on the outer surface of the stepped hole cylinder 12, and the linear motor is set internally
  • the sub 2 is sleeved on the outer surface of the other end of the heat dissipation sleeve 11; the heat dissipation sleeve 11 is provided with a first oil passage hole, and the first oil passage hole cooperates with the first oil groove and the second oil groove
  • the linear compressor lubricating oil constitutes a flow channel outside the stepped hole cylinder 12.
  • the method further includes: a first resonance spring 91 and a second resonance spring 92; the first resonance spring 91 and the second resonance spring 92 are sleeved on the outer surface of the hollow stepped shaft piston 10, and the first A resonance spring 91 and a second resonance spring 92 are respectively disposed on both sides of the bearing hole.
  • a spring connector 8 is cylindrical, fixedly connected to the linear motor mover 5, and the spring connector 8 is sleeved on one end of the hollow stepped shaft piston 10 Is connected to one end of the hollow stepped shaft piston 10, one end of the first resonance spring 91 is connected to the spring connector 8, and the other end of the first resonance spring 91 is connected to one of the bearing holes Connected to one side, one end of the second resonance spring 92 is connected to the other side of the bearing hole, and the other end of the second resonance spring 92 is connected to the other end of the hollow stepped shaft piston 10.
  • the linear motor further includes: a first connector and a second connector 6; the first connector 1 and the second connector 6 are disposed on the outer surface of the heat dissipation sleeve 11, and the The first connector 1 and the second connector 6 fix the outer stator 4 of the linear motor to the outer surface of the heat dissipation sleeve 11.
  • it also includes: an oil pump 17; the oil pump 17 is fixedly connected to the first connector 1; the oil pump 17 is connected to the cylindrical oil hole of the first connector 1; lubricating oil is pumped in through the oil pump 17 After the oil hole on the cylindrical surface of the first connector 1 enters the first oil passage formed by the inner hole of the heat dissipation sleeve 11 and the outer cylindrical surface of the cylinder 12 of the stepped hole, and then enters the oil groove inside the cylinder 12 of the stepped hole and passes through the heat dissipating sleeve 11 The second oil passage formed by the cooperation of the inner hole and the outer cylindrical surface of the cylinder 12 of the stepped hole flows out.
  • both the inner stator 2 and the outer stator 4 are hollow cylindrical; and the inner stator 2 and the outer stator 4 are coaxially arranged; the shape of the mover 5 is a cup-shaped cylinder, The bottom of the cup-shaped cylinder is provided with an opening and is connected to the spring connector 8.
  • an exhaust device 14 is provided on an end of the outer surface of the stepped hole cylinder 12 away from the linear motor, and an air suction device 13 is provided on the other side of the stepped hollow stepped shaft piston 10.
  • a linear compressor including: a linear motor, a hollow stepped shaft piston 10 and a stepped hole cylinder 12; the small end of the hollow stepped shaft piston 10 is disposed inside the linear motor and inserted into the stepped hole The motor bearing hole of the cylinder 12 slides linearly in the axial direction. The large end of the hollow stepped shaft piston 10 passes through the linear motor and is inserted into the stepped hole cylinder 12 to form a compression space. The hollow stepped shaft piston 10 is fixedly connected to the mover 5 of the linear motor There are a number of small holes in the cylindrical surface of the small end of the hollow stepped shaft piston 10, and the center hole of the hollow stepped shaft piston forms a suction flow path.
  • the stepped hole cylinder 12 is provided with a motor bearing hole matched with the small end of the hollow stepped shaft piston 10, which is placed inside the motor, and the other end passes through the linear motor and cooperates with the large end of the hollow stepped shaft piston 10 to form a compression space.
  • the spaces 10-a, 10-b formed by the cooperation of the stepped hole cylinder stepped hole, the hollow stepped shaft piston stepped shaft and the small end cylindrical hole of the hollow stepped shaft piston 10 constitute a suction small hole muffler.
  • Lubricating oil flow annular grooves are formed inside the stepped hole cylinder 12, and a first oil groove 12-a and a second oil groove 12-b are respectively formed on the outer cylindrical surface.
  • the lubricating oil flow annular grooves inside the stepped hole cylinder 12 pass through the stepped hole cylinder column
  • the surface oil hole communicates with the first oil groove 12-a and the second oil groove 12-b of the outer cylindrical surface.
  • the first oil groove 12-a and the second oil groove 12-b constitute a flow path of the linear compressor lubricating oil outside the cylinder with stepped holes.
  • the suction small hole muffler cavity By adopting the stepped hole cylinder stepped hole, hollow stepped shaft piston stepped shaft, the space 10-a, 10-b and the small end cylindrical hole of the stepped hollow stepped shaft piston 10 constitute the suction small hole muffler cavity, which can effectively reduce the suction Gas noise.
  • the space 10-a formed by the cooperation between the hollow stepped shaft, the stepped shaft of the piston and the stepped hole of the cylinder can achieve the effect of suction pre-compression during the suction process, which can reduce the reduction of exhaust gas caused by the density reduction caused by the overheating of the refrigerant. Thereby effectively increasing the compressor suction volume and increasing the compressor displacement and cooling capacity.
  • the compressor is driven by a linear motor, and most of the compression components are arranged inside the linear motor, which can make full use of the internal space of the linear motor, greatly reduce the space occupied by the compressor, and reduce the size of the compressor.
  • the resonance springs are all arranged inside the linear motor, and the stepped cylinder 12 is arranged outside the linear motor, so that the overall size of the compressor is reduced.
  • the integral formation of stepped hole cylinder and motor bearing hole can effectively avoid the phenomenon of the external stuck cylinder of stepped hole cylinder and hollow stepped shaft piston.
  • the hollow stepped shaft piston 10 is set by steps, because the hollow stepped shaft piston shaft is the stepped long axis
  • the shape is not only convenient for transmitting power, but also easy to penetrate into the internal setting of the linear motor.
  • the inner hole of the heat dissipation sleeve 11 cooperates with the outer cylindrical surface of the stepped hole cylinder 12, and is fixedly connected with the stepped hole cylinder 12, so as to ensure the coaxiality of the stepped hole cylinder 12 and the linear motor.
  • One end of the heat dissipation sleeve 11 is provided with a plurality of heat dissipation fins arranged coaxially with the inner hole of the heat dissipation sleeve, and the other end is provided with a cylindrical tube that fixes the inner stator of the linear motor.
  • the inner stator part 2 of the linear motor is sleeved on the inner stator connection of the heat dissipation sleeve Cylindrical surface of the cylindrical cylinder.
  • the cylindrical surface of the heat dissipation sleeve 11 is provided with oil holes, which form a passage between the oil pump 17 and the first oil groove 12-a and the second oil groove 12-b of the cylinder with stepped holes.
  • the stepped hole cylinder 12 is provided outside the linear motor, which can facilitate the cooling and cooling of the stepped hole cylinder 12 and can easily introduce low-temperature and low-pressure gas into the compressor casing so that the low-temperature and low-pressure gas flows around the stepped hole cylinder 12 Convective heat exchange to reduce the temperature and improve the compression efficiency.
  • the resonance spring includes: a first resonance spring 9-1 and a second resonance spring 9-2; inside the linear motor, the first resonance spring 9-1 and the second resonance spring 9 are provided on both sides of the bearing hole of the stepped cylinder 12 -2, and sleeve outside the small end of the hollow stepped shaft piston 10.
  • the spring connector 8 also includes a spring connector 8; the spring connector 8 is in the shape of a stepped cylinder, fixedly connected to the motor mover 5, and the spring connector 8 is sleeved on the outer side of the small end of the hollow stepped shaft piston 10 and connected to the hollow stepped shaft piston 10 Fixed.
  • One end 9-1b of the first resonance spring 9-1 is connected to the spring connector 8
  • the other end 9-1a of the first resonance spring 9-1 is connected to one side of the bearing hole of the stepped hole cylinder 12
  • One end 9-2a of 2 is connected to the other side of the bearing hole of the stepped hole cylinder 10, and the other end 9-2b of the second resonance spring 9-2 is connected to the large end of the hollow stepped shaft piston.
  • the method further includes: a first connecting member 1 and a second connecting member 6; the first connecting member 1 and the heat dissipation sleeve 11 are connected by a split-molded screw fastening method, and the cylindrical surface of the first connecting member 1 is provided with an oil hole.
  • the outer stator part 5 is fixed by the first connector 1 and the second connector 6, respectively, and the first connector 1 and the second connector 6 are located on both sides of the linear motor, respectively.
  • the oil pump 17 also includes an oil pump 17; the oil pump 17 is fixedly connected to the first connector 1, the oil pump 17 is connected to the cylindrical oil hole of the first connector 1, the lubricating oil passes through the first connector 1 and the oil hole of the cylindrical surface of the heat dissipation sleeve 11
  • the formed first oil passage 17-a enters the first oil groove 12-a on the outer cylindrical surface of the cylinder with stepped holes, and then enters the inner oil groove of the cylinder with stepped cylinders through the cylindrical surface oil holes of the stepped holes, and flows out through the cylindrical cylinder oil holes on the stepped holes
  • the stepped hole cylinder enters the second cylindrical oil groove 12-b on the outer cylindrical surface of the stepped hole cylinder, and finally flows out through the second oil passage 17-b formed by the oil holes of the cylindrical surface of the first connector 1 and the heat dissipation sleeve 11.
  • the inner stator 2 and the outer stator 4 are both hollow cylindrical and coaxially arranged, the outer stator part 2 is provided with an excitation coil 3, the outer stator part 4 is coated on the circumference of the excitation coil 3, and the mover part 5 is located on the inner stator 2 In the air gap between the outer stator 4, the mover 5 includes a plurality of tile-shaped magnets and styling materials.
  • the mover part 5 is a cup-shaped cylinder, and the cup bottom of the cup-shaped cylinder is provided with an opening and is connected with a spring 8 connected.
  • An intake device 13 is provided on the other side of the large end of the hollow stepped shaft piston 10, and an exhaust device 14 is provided on the end of the stepped hole cylinder 12 facing away from the hollow stepped shaft piston 10.
  • an exhaust device 14 is also provided.
  • the exhaust device 14 is provided on the cylinder head of the stepped hole, and an exhaust spring 15 and an exhaust valve 16 are provided inside the exhaust device 14.
  • the exhaust valve 16 cooperates with the stepped hole cylinder 12 and corresponds to the large end of the stepped hollow stepped shaft piston 10.
  • a linear compressor in an alternative embodiment of the present invention, includes: a linear motor, a hollow stepped shaft, a hollow stepped shaft piston 10, and a stepped hole cylinder 12; a hollow stepped shaft
  • the small end of the hollow stepped shaft piston 10 is provided inside the linear motor and is inserted into the motor bearing hole of the stepped hole cylinder 12 and slides linearly in the axial direction.
  • the large end of the hollow stepped shaft piston 10 passes through the linear motor and is inserted into the stepped hole cylinder 12 to form In the compression space, the hollow stepped shaft piston 10 is fixedly connected to the mover part 5 of the linear motor.
  • the small end cylindrical surface of the stepped hollow stepped shaft piston 10 has a plurality of small holes, and forms a suction air passage with the center hole of the hollow stepped shaft piston.
  • the stepped hole cylinder 12 is provided with a motor bearing hole matched with the small end of the hollow stepped shaft piston 10, which is arranged inside the motor, and the other end passes through the linear motor and cooperates with the large end of the hollow stepped shaft piston 10 to form a compression space.
  • the stepped hole of the stepped cylinder 12 and the stepped shaft of the hollow stepped shaft piston 10 are formed with the space 10-a and the small end cylindrical hole of the hollow stepped shaft piston 10 to form a suction small hole muffler.
  • Lubricating oil flow annular grooves are formed inside the stepped hole cylinder 12, and a first oil groove 12-a and a second oil groove 12-b are respectively formed on the outer cylindrical surface.
  • the lubricating oil flow annular grooves inside the stepped hole cylinder 12 pass through the stepped hole cylinder column
  • the surface oil hole communicates with the first oil groove 12-a and the second oil groove 12-b of the outer cylindrical surface.
  • the first oil groove 12-a and the second oil groove 12-b constitute a flow path of the linear compressor lubricating oil outside the cylinder with stepped holes.
  • a stepped hole cylinder stepped hole By adopting a stepped hole cylinder stepped hole, a hollow stepped shaft piston stepped shaft, a space 10-a and a small end cylindrical hole of the stepped hollow stepped shaft piston 10 constitute a suction small hole muffler cavity, which can effectively reduce the suction noise.
  • the space 10-a formed by the cooperation between the stepped shaft of the hollow stepped shaft piston 10 and the stepped hole of the stepped hole cylinder 12 can achieve the effect of suction pre-compression during the suction process, which can reduce the exhaust gas caused by the density reduction due to the overheating of the refrigerant Reduce, so as to effectively increase the compressor suction, increase the compressor displacement and cooling capacity.
  • the linear compressor is driven by a linear motor, and most of the compression components are arranged inside the linear motor, which can make full use of the internal space of the linear motor, greatly reduce the space occupied by the compressor, and reduce the size of the compressor.
  • the resonance springs are all arranged inside the linear motor, and the stepped cylinder 12 is arranged outside the linear motor, so that the overall size of the compressor is reduced.
  • the integral formation of the stepped hole cylinder and the motor bearing hole in the form of a stepped hole cylinder can effectively avoid the phenomenon of the external stuck cylinder of the stepped hole cylinder and the hollow stepped shaft piston.
  • the hollow stepped shaft piston shaft is The long axis of the ladder is not only easy to transmit power, but also convenient to penetrate into the internal setting of the linear motor.
  • the resonant spring outside the stepped shaft hollow stepped shaft piston, it can not only satisfy the resonance effect of the hollow stepped shaft piston 10, but also facilitate the placement of the resonant spring inside the motor.
  • the inner hole of the heat dissipation sleeve 11 cooperates with the outer cylindrical surface of the stepped hole cylinder 12, and is fixedly connected with the stepped hole cylinder 12, so as to ensure the coaxiality of the stepped hole cylinder 12 and the linear motor.
  • One end of the heat dissipation sleeve 11 is provided with a heat sink which is coaxially arranged with the inner hole of the heat dissipation sleeve as a stepped hole cylinder, and the other end is provided with a cylindrical tube which fixes the stator of the linear motor, and the inner stator part of the linear motor is sleeved
  • the outer cylindrical surface of the cylindrical barrel connected to the inner stator of the heat sink.
  • the cylindrical surface of the heat dissipation sleeve 11 is provided with oil holes, which form a passage between the oil pump 17 and the first oil groove 12-a and the second oil groove 12-b of the cylinder with stepped holes.
  • the method further includes: a first connecting member 1 and a second connecting member 6; the first connecting member 1 is integrally formed with the heat dissipation sleeve 11, and the cylindrical surface of the first connecting member 1 is provided with an oil hole.
  • the outer stator part 5 is fixed by the first connector 1 and the second connector 6, respectively, and the first connector 1 and the second connector 6 are located on both sides of the linear motor, respectively.
  • the stepped hole cylinder 12 is provided outside the linear motor, which can facilitate the cooling and cooling of the stepped hole cylinder 12 and can easily introduce low-temperature and low-pressure gas into the compressor casing so that the low-temperature and low-pressure gas flows around the stepped hole cylinder 12 Convective heat exchange to reduce the temperature and improve the compression efficiency.
  • the resonance spring includes: a first resonance spring 9-1 and a second resonance spring 9-2; inside the linear motor, the first resonance spring 9-1 and the second resonance are respectively provided on both sides of the bearing hole of the stepped stepped hole cylinder 12
  • the spring 9-2 is sleeved outside the small end of the stepped hollow stepped shaft piston 10.
  • it also includes a spring connector 8; the spring connector 8 is in the shape of a stepped cylinder, fixedly connected to the motor mover part 5, and the spring connector 8 is sleeved on the outside of the small end of the stepped hollow stepped shaft piston 10, and is connected with the stepped hollow step
  • the shaft piston 10 is fixedly connected.
  • One end 9-1b of the first resonance spring 9-1 is connected to the spring connector 8
  • the other end 9-1a of the first resonance spring 9-1 is connected to one side of the bearing hole of the stepped stepped hole cylinder 12
  • the second resonance spring One end 9-2a of 9-2 is connected to the other side of the bearing hole of the stepped stepped hole cylinder 12
  • the other end 9-2b of the second resonance spring 9-2 is connected to the large end of the hollow stepped shaft piston 10.
  • the oil pump 17 also includes an oil pump 17; the oil pump 17 is fixedly connected to the first connector 1, the oil pump 17 is connected to the cylindrical oil hole of the first connector 1, the lubricating oil passes through the first connector 1 and the oil hole of the cylindrical surface of the heat dissipation sleeve 11
  • the formed first oil passage 17-a enters the first oil groove 12-a on the outer cylindrical surface of the cylinder with stepped holes, and then enters the inner oil groove of the cylinder with stepped cylinders through the cylindrical surface oil holes of the stepped holes, and flows out through the cylindrical cylinder oil holes on the stepped holes
  • the stepped hole cylinder enters the second cylindrical oil groove 12-b on the outer cylindrical surface of the stepped hole cylinder, and finally flows out through the second oil passage 17-b formed by the first connector 1 and the oil hole on the cylindrical surface of the heat dissipation sleeve 11.
  • Both the inner stator component 2 and the outer stator component 4 are hollow cylindrical and coaxially arranged, the outer stator component 2 is provided with an excitation coil 3, the outer stator component 4 is coated on the circumference of the excitation coil 3, and the mover component 5 is located in the inner In the air gap between the sub-component 2 and the outer stator component 4, the mover component 5 includes a plurality of tile-shaped magnets and styling materials, the mover component 5 is a cup-shaped cylinder, and the cup bottom of the cup-shaped cylinder is provided with an opening And connected with the spring connector 8.
  • An intake device 13 is provided on the other side of the large end of the stepped hollow stepped shaft piston 10, and an exhaust device 14 is provided on the end of the stepped hole cylinder 12 facing away from the hollow stepped shaft piston 10. Specifically, an exhaust device 14 is also provided.
  • the exhaust device 14 is provided in the cylinder head of the stepped hole, and an exhaust spring 15 and an exhaust valve 16 are provided inside the exhaust device 14. The exhaust valve 16 cooperates with the stepped hole cylinder 12 and corresponds to the large end of the stepped hollow stepped shaft piston 10.
  • the invention aims to protect a linear compressor, including: a linear motor, a hollow stepped shaft piston and a stepped hole cylinder; the stepped hole cylinder is provided with a bearing hole of the linear motor; one end of the hollow stepped shaft piston is provided Inside the linear motor and fixedly connected to the mover of the linear motor; the hollow stepped shaft piston slides linearly along the axial direction of the bearing hole, and the other end of the hollow stepped shaft piston passes through the bearing hole Penetrate the linear motor and insert into the stepped hole cylinder to form a compression space inside the stepped hole cylinder; the shape of the hollow stepped shaft piston is a cylinder, and there is a hollow cavity inside the cylinder, and the A small hole is provided on the side of the cylinder, and the small hole communicates with the hollow cavity to form an air suction channel.
  • the invention places the resonant spring inside the linear motor, which can effectively use the internal space of the motor and reduce the external dimensions of the linear compressor; the stepped hole cylinder is used to form the stepped hole cylinder and the motor bearing hole integrally to effectively avoid the stepped hole cylinder and hollow
  • the phenomenon of rear cylinder jamming of the stepped shaft piston is adopted.
  • the space formed by the stepped hole cylinder stepped hole, the hollow stepped shaft piston stepped shaft and the small end cylindrical hole of the stepped hollow stepped shaft piston constitute the suction small hole muffler cavity, which can be effective Reduce inhalation noise.
  • the space formed by the cooperation of the hollow stepped shaft piston and the bearing hole of the cylinder motor can achieve the effect of suction pre-compression during the suction process, which can reduce the reduction of exhaust gas caused by the density reduction caused by the overheating of the refrigerant, and effectively increase the compressor suction Increase the compressor displacement and cooling capacity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne un compresseur linéaire comprenant : un moteur linéaire, un piston d'arbre étagé creux (10) et un cylindre (12) à trou étagé. Un trou de palier du moteur linéaire est prévu sur le cylindre (12) à trou étagé; une extrémité du piston d'arbre étagé creux (10) est disposée au niveau d'une partie interne du moteur linéaire et reliée fixe à un dispositif de déplacement (5) du moteur linéaire; et le piston d'arbre étagé creux (10) coulisse linéairement le long de la direction axiale du trou de palier, et une autre extrémité du piston d'arbre étagé creux (10) pénètre dans le moteur linéaire au moyen du trou de palier, et elle est introduite dans le cylindre (12) à trou étagé afin de former un espace de compression à l'intérieur d'une partie interne du cylindre (12) à trou étagé. Dans le présent compresseur, un ressort résonant est placé au niveau de la partie interne du moteur linéaire, et peut utiliser efficacement un espace interne du moteur, ce qui permet de réduire les dimensions externes du compresseur linéaire. Le cylindre à trou étagé et le trou de palier de moteur sont moulés d'un seul tenant à l'aide de l'utilisation de la forme du cylindre à trou étagé, ce qui peut empêcher efficacement le phénomène selon lequel le cylindre à trou étagé est bloqué après avoir été monté extérieurement avec le piston d'arbre étagé creux.
PCT/CN2019/082069 2018-12-20 2019-04-10 Compresseur linéaire WO2020124880A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811591323.7A CN109723620B (zh) 2018-12-20 2018-12-20 一种线性压缩机
CN201811591323.7 2018-12-20

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WO2020124880A1 true WO2020124880A1 (fr) 2020-06-25

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110566434B (zh) * 2019-09-18 2021-02-26 辽宁工程技术大学 一种线性压缩机

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JP2001200787A (ja) * 2000-01-18 2001-07-27 Matsushita Refrig Co Ltd 振動式圧縮機
CN106368927A (zh) * 2016-11-14 2017-02-01 青岛万宝压缩机有限公司 直线压缩机用润滑结构及直线压缩机
CN108518332A (zh) * 2018-03-23 2018-09-11 中国科学院理化技术研究所 一种线性压缩机
CN108757382A (zh) * 2018-06-08 2018-11-06 华中科技大学 一种对动式直线压缩机

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WO1998001675A1 (fr) * 1996-07-09 1998-01-15 Sanyo Electric Co., Ltd. Compresseur lineaire
JP2003097426A (ja) * 2001-09-26 2003-04-03 Matsushita Refrig Co Ltd リニア圧縮機
KR100619768B1 (ko) * 2005-02-03 2006-09-11 엘지전자 주식회사 2단 왕복동식 압축기 및 이를 적용한 냉장고
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US6202791B1 (en) * 1998-05-18 2001-03-20 Lg Electronics, Inc. Oil circulation structure for linear compressor and method of the same
JP2001200787A (ja) * 2000-01-18 2001-07-27 Matsushita Refrig Co Ltd 振動式圧縮機
CN106368927A (zh) * 2016-11-14 2017-02-01 青岛万宝压缩机有限公司 直线压缩机用润滑结构及直线压缩机
CN108518332A (zh) * 2018-03-23 2018-09-11 中国科学院理化技术研究所 一种线性压缩机
CN108757382A (zh) * 2018-06-08 2018-11-06 华中科技大学 一种对动式直线压缩机

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