CN110701020A - High efficiency and energy saving reciprocating permanent magnet linear compressor - Google Patents

Abstract

The invention relates to a high-efficiency and energy-saving reciprocating permanent magnet linear compressor, comprising a power mechanism and a compressor mechanism. The power mechanism includes a mover assembly and a pair of stator assemblies with excitation coils. The mover assembly includes a mover body and a magnet assembly, and the mover body is composed of two or more parts arranged in separate parts, and is linked against the magnet assembly from both sides along the moving direction of the mover body, so that a linkage is formed. The mover body is linked and connected with the piston rod. In the present invention, the mover body that is arranged in separate parts presses against the magnet assembly from both sides along the moving direction of the mover body to form a linkage, so there is no need to provide support for the magnet assembly from the thickness direction, so the thickness and air of the magnet assembly part will not be increased. The gap spacing is more conducive to improving the magnetic field strength between the air gaps and enhancing the effective magnetic field of the compressor motor, thereby effectively improving the thrust and efficiency.

Description

High efficiency and energy saving reciprocating permanent magnet linear compressor

technical field

The invention relates to a reciprocating permanent magnet linear compressor, in particular to a high-efficiency and energy-saving reciprocating permanent magnet linear compressor.

Background technique

Existing reciprocating permanent magnet linear compressors generally include a power mechanism and a compressor mechanism. The power mechanism includes a pair of stator assemblies and mover assemblies with excitation coils; the compressor mechanism includes a cylinder block, a piston and a piston rod. The mover assembly includes a mover body and a ring magnet assembly, the ring magnet assembly is fixedly arranged on the mover body, and is located in the air gap between the two stator assemblies arranged in pairs, the The piston rod is fixedly connected with the mover body. By inputting excitation current to the excitation coil, the paired stator assemblies generate a magnetic field, and the mover assembly is driven to reciprocate and drive the piston rod and the piston under the interaction of the magnetic field and the ring magnet assembly to complete the cycle suction, compression process. According to the principle of the reciprocating permanent magnet linear compressor, the stronger the magnetic field strength generated by the stator assembly, the greater the power of the compressor. Without increasing the excitation current, reducing the air gap between the two stator assemblies will have It is beneficial to increase the magnetic field strength, thereby increasing the power. However, in the existing reciprocating permanent magnet linear compressor, the annular magnet assembly in the mover assembly is usually attached to the surface of the mover body, especially for the annular magnet assembly arranged in a ring shape, due to the thickness of the mover body itself , increasing the air gap between the two stator assemblies, affecting the magnetic field strength, thereby reducing the power, especially for high-power permanent magnet linear compressors, which require larger ring magnet assemblies, which in turn require a thicker mover body support, which has a greater impact on the power of the permanent magnet linear compressor.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a reciprocating permanent magnet linear compressor with a reasonable structure and higher efficiency.

In order to achieve the above purpose, the present invention provides the following technical solutions: a high-efficiency and energy-saving reciprocating permanent magnet linear compressor, including a power mechanism and a compressor mechanism, the power mechanism includes a mover assembly and has excitation coils and are arranged in pairs The stator assembly, the gap between the paired stator assemblies forms an air gap; the mover assembly includes a mover body and a magnet assembly, and the compressor mechanism includes a cylinder, a piston and a piston rod; it is characterized in that: The mover body is composed of two or more separate parts, the magnet assembly is movably arranged in the air gap of the paired stator assemblies, and the mover body is two or more separate parts The arranged part is opposed to the magnet assembly from two sides along the movement direction of the mover body to form a linkage, the mover assembly is movably arranged, and the mover body is linked with the piston rod.

Because in the technical solution of the present invention, the mover body that is arranged in a separate body presses against the magnet assembly from both sides along the moving direction of the mover body to form a linkage, and there is no need to provide support for the magnet assembly from the thickness direction, so no additional magnet assembly is required. Part of the thickness and air gap spacing, which is more conducive to improving the magnetic field strength between the air gaps, enhancing the effective magnetic field of the compressor motor, thereby effectively improving the thrust and efficiency.

As a further arrangement of the present invention: the paired stator assemblies are composed of an inner stator assembly and an outer stator assembly, the inner stator assembly and the outer stator assembly are both annular as a whole, and the outer diameter of the inner stator assembly is smaller than that of the outer stator The inner diameter of the assembly, the inner stator assembly is sleeved in the center of the outer stator assembly, the gap between the inner stator assembly and the outer stator assembly forms an annular air gap; the magnet assembly is annular to form an annular magnet assembly, and the The two parts of the mover body disposed in the body are opposed to the two side end faces of the ring magnet assembly from two sides in the axial direction to form a linkage. The inner stator assembly and the outer stator assembly are annular as a whole, which is more conducive to obtaining greater thrust and power in a smaller overall machine volume.

As a further arrangement of the present invention: the reciprocating permanent magnet linear compressor is provided with a pair of stator assemblies, a set of the compressor mechanism, a linkage shaft and a frame assembly; the frame assembly is fixedly provided with a stator The stator assembly is disposed in the stator cavity, the linkage shaft is slidably disposed on the base assembly, the mover body is fixedly connected with the linkage shaft, and the linkage shaft is connected to the piston rod The linkage connection constitutes the linkage connection between the mover body and the piston rod to form a reciprocating permanent magnet linear single-cylinder compressor.

As a further arrangement of the present invention: the machine base assembly includes a shaft sleeve whose inner hole is adapted to the linkage shaft, a left end plate and a right end plate, and the center of the left end plate and the right end plate is provided with a shaft for the linkage shaft to penetrate The left end plate and the right end plate are respectively fixed on both ends of the shaft sleeve, the annular space enclosed between the left end plate, the right end plate and the shaft sleeve constitutes a stator cavity, the inner stator assembly and the outer The stator assembly is arranged in the stator cavity, and the annular magnet assembly is arranged in the air gap between the inner stator assembly and the outer stator assembly; the mover body is composed of two separate left movers and right movers , the left mover and the right mover are cylindrical members with one end open and one end provided with a bottom as a whole. The cylinder walls at the open ends of the left and right movers are provided with a number of axial slots, so that a number of top claws are formed at the front of the cylinder walls of the left and right movers, and the left end plate is The position corresponding to the right end plate is provided with a slot hole matched with the gap of the top claw, and the top claw of the left and right mover is respectively inserted into the air gap from the slot hole of the left end plate and the right end plate, The two end faces of the ring magnet assembly are pressed against each other from both sides to form an axial linkage; the bottom center of the left mover and the right mover is provided with a through hole for the linkage shaft to pass through, and the linkage shaft passes through the shaft sleeve, the The shaft hole in the center of the left end plate and the right end plate and the hole in the bottom center of the left mover and the right mover, the linkage shaft and the shaft sleeve are axially slidable relative to each other, and the two ends of the linkage shaft are respectively connected to the left and right. The mover and the right mover are fixedly connected to form an axial linkage; the cylinder body is a cylindrical member with an open end at one end and a bottom, and a cylinder chamber is arranged inside, and the open end of the cylinder body is opposite to the left end plate and is fixedly connected, The piston is arranged in the cylinder chamber, and the end of the linkage shaft penetrates through the hole and is connected with the piston rod to form a linkage. Through the above arrangement, the mover body can well press against the two end faces of the annular magnet assembly to form an axial linkage, and the structure is simple and the operation is reliable.

As a further arrangement of the present invention: the reciprocating permanent magnet linear compressor is provided with a pair of stator assemblies, linkage shafts, base assemblies and two groups of the compressor mechanisms; the two groups of the compressor mechanisms respectively include a left A cylinder body, a left piston and a left piston rod, a right cylinder body, a right piston and a right piston rod; a stator cavity is fixed on the base assembly, the stator assembly is arranged in the stator cavity, and the linkage shaft can It is slidably arranged on the base assembly, the mover body is fixedly connected with the linkage shaft, and the two ends of the linkage shaft are respectively linked with the left piston rod and the right piston rod to form the mover body and the piston. The rods are linked together to form a reciprocating permanent magnet linear twin-cylinder compressor.

As a further arrangement of the present invention: the machine base assembly includes a shaft sleeve whose inner hole is adapted to the linkage shaft, a left end plate and a right end plate, and the center of the left end plate and the right end plate is provided with a shaft for the linkage shaft to penetrate The left end plate and the right end plate are respectively fixed on both ends of the shaft sleeve, the annular space enclosed between the left end plate, the right end plate and the shaft sleeve constitutes a stator cavity, the inner stator assembly and the outer The stator assembly is arranged in the stator cavity, and the annular magnet assembly is arranged in the air gap between the inner stator assembly and the outer stator assembly; the mover body is composed of two separate left movers and right movers. The left mover and the right mover are both cylindrical members with an open end at one end and a bottom at the other end, and the cylinder wall cross-sectional shape of the left mover and the right mover is the same as the air gap cross-sectional shape and is clearance fit , the cylinder wall at the opening end of the left mover and the right mover is provided with a number of axial slots, so that a number of top claws are formed in the front of the cylinder wall of the left mover and the right mover. The corresponding positions of the left end plate and the right end plate are provided with slot holes matched with the gaps of the top claws, and the top claws of the left and right movers are respectively inserted into the air gaps from the slot holes of the left and right end plates. The two end faces of the ring magnet assembly are opposed to each other from both sides to form a linkage; the bottom center of the left mover and the right mover is provided with a perforation for the linkage shaft to pass through, and the linkage shaft passes through the shaft sleeve, the The shaft hole in the center of the left end plate and the right end plate and the hole in the bottom center of the left mover and the right mover, the linkage shaft and the shaft sleeve are axially slidable relative to each other, and the two ends of the linkage shaft are respectively connected to the left and right. The mover and the right mover are fixedly connected to form an axial linkage; the left cylinder block and the right cylinder block are both cylindrical members with one end open and one end provided with a bottom, and a left cylinder chamber and a right cylinder chamber are respectively arranged inside, and the left cylinder body and the right cylinder chamber are respectively provided. The cylinder body and the right cylinder body are arranged at the left and right ends, the open ends of the left and right cylinder bodies are respectively opposite and fixedly connected with the left end plate and the right end plate, and the left piston and the right piston are respectively arranged in the left cylinder chamber and the right end plate. In the cylinder chamber, the two ends of the linkage shaft protrude from the perforations and are respectively connected to the left piston rod and the right piston rod to form a linkage. Through the above arrangement, the high-efficiency and energy-saving reciprocating permanent magnet linear compressor can form a double compressor, which can perform work in both directions and has higher efficiency.

As a further arrangement of the present invention: the reciprocating permanent magnet linear compressor is provided with two pairs of stator assemblies, two sets of the ring magnet assemblies, a linkage shaft, a frame assembly and two sets of the compressor mechanisms; two The compressor mechanisms respectively include a left cylinder, a left piston and a left piston rod, and a right cylinder, a right piston and a right piston rod; two stator cavities are fixed on the base assembly, and the two sets are paired The arranged stator assemblies are respectively arranged in two stator cavities, the linkage shaft is slidably arranged on the base assembly, the mover body is fixedly connected with the linkage shaft, and the two ends of the linkage shaft are respectively Linked with the left piston rod and the right piston rod, the mover body is linked with the piston rod to form a reciprocating permanent magnet linear double-cylinder compressor.

As a further arrangement of the present invention: the base assembly includes a shaft sleeve with an inner hole adapted to the linkage shaft, a left end plate, a left middle plate, a right middle plate, and a right end plate; the mover body is composed of a separate set of The left mover, the middle mover and the right mover are composed; the center of the left end plate, the left middle plate, the right middle plate and the right end plate is provided with a shaft hole for the linkage shaft to penetrate, the left end plate, the left middle plate, The right middle plate and the right end plate are respectively fixed and arranged on the shaft sleeve in sequence, the annular space enclosed between the left end plate, the left middle plate and the shaft sleeve constitutes the left stator cavity, and the right middle plate, the right end plate and the shaft sleeve form a left stator cavity. The annular space enclosed between the shaft sleeves constitutes the right stator chamber, the left stator chamber and the right stator chamber constitute the two stator chambers, and the two pairs of stator assemblies are respectively arranged in the left stator chamber. In the cavity and the right stator cavity, the two sets of ring magnet assemblies are respectively arranged in the air gaps of the two sets of stator assemblies, and the left mover and the right mover are both cylindrical members with one end open and one end provided with a bottom. , the middle mover is a straight cylindrical member, the left mover, the middle mover and the right mover have the same diameter, and the cross-sectional shape of the cylinder wall is the same as the air gap cross-sectional shape and fits with clearance, and the left mover and the right mover are open. The cylinder walls at the ends are provided with a number of axial slots, so that a number of top claws are formed at the front of the cylinder walls of the left and right movers, and the cylinder walls at both ends of the middle mover are also provided with Several axial slots are formed with several top claws, the middle mover is arranged between the left middle plate and the right middle plate, and the corresponding positions of the left end plate, the left middle plate, the right middle plate and the right end plate are provided with The slot holes matched with the clearance of the top claws, the top claws of the left mover, the middle mover and the right mover are respectively inserted into the slot holes of the left end plate, the left middle plate, the right middle plate and the right end plate. In the air gap, the two end faces of the two sets of ring magnet assemblies are pressed against each other from opposite sides to form a linkage; the bottom center of the left mover and the right mover is provided with a perforation for the linkage shaft to pass through, and the linkage shaft passes through. Through the shaft hole in the center of the shaft sleeve, the left end plate, the left middle plate, the right middle plate and the right end plate, the hole in the bottom center of the left mover and the right mover, and the inner hole of the middle mover, the linkage shaft is connected to the center of the center mover. The shaft sleeve is axially slidable relatively, and the two ends of the linkage shaft are respectively fixedly connected with the left mover and the right mover to form an axial linkage; the left cylinder body and the right cylinder body are both open at one end and provided with a bottom at the other end A left cylinder chamber and a right cylinder chamber are respectively provided inside, the open ends of the left and right cylinders are respectively opposite to the left and right end plates and are fixedly connected, and the left and right pistons are respectively set In the left cylinder chamber and the right cylinder chamber, the two ends of the linkage shaft protrude from the through holes and are respectively connected to the left piston rod and the right piston rod to form a linkage. By arranging two sets of paired stator assemblies and two sets of the ring magnet assemblies, the dual compressors can obtain double the thrust, thereby further improving the power.

As a further arrangement of the present invention: the left cylinder body and the right cylinder body are both provided with spring chambers, and elastic members are arranged in the spring chambers, and the elastic members respectively enable the mover assembly to have a The elastic damping force in the opposite movement direction of the mover assembly makes the piston, the elastic member and the mover assembly form an elastic system. Through the above arrangement, when the frequency of the excitation current used by the stator is the same as the resonance frequency of the elastic system, the maximum compression stroke of the compressor can be achieved with the minimum energy consumption, and therefore the most efficient and energy-saving.

As a further arrangement of the present invention: the elastic member is a helical compression spring, the left cylinder block and the right cylinder block are provided with a stepped shaft-shaped cavity, and the cavity with a smaller diameter in the stepped shaft-shaped cavity constitutes a cylinder In the stepped shaft-shaped cavity, the larger diameter cavity constitutes the spring cavity. The diameter of the spring cavity is in clearance fit with the diameters of the compression spring, the left mover and the right mover, and one end of the compression spring elastically resists On the shoulder step of the cavity, the other end elastically presses against the end face of the left mover or the right mover to form the elastic system.

As a further arrangement of the present invention: the shoulder of the cavity is provided with a groove that is clearance fit with the end of the compression spring, one end of the compression spring is in the groove, and the other end elastically abuts against the left mover or the right The elastic system is formed on the end face of the mover.

As a further arrangement of the present invention: the magnet assembly is composed of permanent magnets as a whole.

As a further arrangement of the present invention: the magnet assembly includes a bracket and a plurality of permanent magnets, and the plurality of permanent magnets are embedded on the bracket. The bracket is composed of a ring-shaped member whose thickness matches the air gap and is gap-fitted. The edge of the bracket is evenly spaced with a number of rectangular gaps, and the two sides of the gap are arranged in arc grooves. The shape and thickness of the permanent magnet are related to the gap. It is a tile shape with a radian that matches the diameter of the bracket. The cross-section of the edges on both sides is arc-shaped, which matches with the arc-shaped grooves on both sides of the gap. The permanent magnet is inserted into the gap to form the ring magnet assembly. By arranging a bracket to embed a plurality of permanent magnets to form a magnet assembly, the cost can be reduced and the manufacture can be facilitated.

Description of drawings

1 is a cross-sectional view of the internal structure of a specific embodiment 1 of the present invention;

2 is a sectional view of the internal structure of the specific embodiment 2 of the present invention;

Fig. 3 is one of the partial exploded views of the structure of the specific embodiment 2 of the present invention;

Fig. 4 is the second partial exploded view of the structure of the specific embodiment 2 of the present invention;

Fig. 5 is the third partial exploded view of the structure of the specific embodiment 2 of the present invention;

FIG. 6 is a schematic three-dimensional structure diagram of a machine base assembly according to Embodiment 2 of the present invention;

7 is a schematic three-dimensional structural diagram of a specific embodiment of the left mover and the right mover of the present invention;

8 is a schematic diagram of the three-dimensional structure of the appearance of the specific embodiment 3 of the present invention;

9 is a cross-sectional view of the internal structure of the specific embodiment 3 of the present invention;

FIG. 10 is a schematic diagram of the three-dimensional structure of the base assembly according to the third embodiment of the present invention

11 is one of the partial exploded views of the structure of the specific embodiment 3 of the present invention;

Fig. 12 is the second partial exploded view of the structure of the specific embodiment 3 of the present invention;

13 is a schematic three-dimensional structural diagram of a specific embodiment of the magnet assembly of the present invention;

FIG. 14 is an exploded view of the structure of a specific embodiment of the magnet assembly of the present invention.

Detailed ways

The high-efficiency and energy-saving reciprocating permanent magnet linear compressor of the present invention includes a power mechanism and a compressor mechanism. The power mechanism includes a mover assembly and a pair of stator assemblies with excitation coils. The stator assemblies arranged in pairs may be upper and lower pairs or concentric annular inner and outer pairs, and the gaps between the paired stator assemblies form air gaps. The compressor mechanism includes a cylinder, a piston and a piston rod. The mover assembly includes a mover body and a magnet assembly, and the mover body is composed of two or more separate parts, and the two or more separate parts are arranged from both sides along the moving direction of the mover body. Opposite to the magnet assembly to form a linkage, the mover assembly is movably arranged, the magnet assembly is movably arranged in the air gap of the pair of stator assemblies, and the mover body is linked with the piston rod Connected to drive the piston rod and piston to reciprocate to complete the compressor function. If only one end is provided with a compressor mechanism, a single-cylinder reciprocating permanent magnet linear compressor can be constructed, and if both ends are provided with a compressor mechanism, a double-cylinder reciprocating permanent magnet linear compressor can be constructed.

The concentric annular inner and outer stator assemblies are preferably composed of an inner stator assembly and an outer stator assembly. The inner stator assembly and the outer stator assembly are both annular as a whole, preferably annular, and the outer stator assembly of the inner stator assembly is annular. The diameter is smaller than the inner diameter of the outer stator assembly, the inner stator assembly is concentrically sleeved in the center of the outer stator assembly, and the gap between the inner stator assembly and the outer stator assembly constitutes the air gap; the magnet assembly is annular. In the ring magnet assembly, the two parts of the separate mover body are opposed to the two end faces of the ring magnet assembly from opposite sides in the axial direction to form a linkage.

The present invention will be further described below with reference to the accompanying drawings and preferred specific embodiments.

Specific embodiment 1:

This specific embodiment takes the high-efficiency and energy-saving reciprocating permanent magnet linear single-cylinder compressor as an example, which includes a power mechanism, a linkage shaft 4, a base assembly and a set of compressor mechanisms.

As shown in FIG. 1 , the base assembly includes a shaft sleeve 1 with an inner hole adapted to the linkage shaft 4 , a left end plate 2 and a right end plate 3 , and the diameter of the left end plate 2 and the right end plate 3 is preferably the same as that of the outer stator. The components have the same diameter, the left end plate 2 and the right end plate 3 are arranged symmetrically, the center of the left end plate 2 and the right end plate 3 is provided with a shaft hole 17 for the linkage shaft 4 to penetrate, the left end plate 2 and the right end plate 3 They can be fixed on both ends of the shaft sleeve 1 by pressing nuts 5 or by tight fitting.

The power mechanism includes a mover assembly and a stator assembly having excitation coils and arranged in pairs. The stator assembly is composed of an inner stator assembly 7 and an outer stator assembly 8. The inner stator assembly 7 and the outer stator assembly 8 are both annular as a whole, and the outer diameter of the inner stator assembly 7 is smaller than the inner stator assembly 8. Aperture, the inner stator assembly 7 is concentrically sleeved in the center of the outer stator assembly 8, the inner aperture of the inner stator assembly 7 is adapted to the outer diameter of the shaft sleeve 1, and the inner stator assembly 7 and the outer The stator assembly composed of the stator assembly 8 is arranged in the stator cavity 6 , and the gap between the inner stator assembly 7 and the outer stator assembly 8 constitutes the air gap 9 .

The mover assembly includes a mover body and a magnet assembly 10 . The magnet assembly 10 is annular to form a ring magnet assembly 10 . The diameter and thickness of the magnet assembly 10 are matched with the air gap 9 and clearance fit, so that the magnet assembly 10 can reciprocate in the air gap 9 . The magnet assembly 10 may be composed of annular permanent magnets of corresponding shapes as a whole; the magnet assembly 10 may also be composed of a bracket 1001 and a plurality of permanent magnets 1002, and the plurality of permanent magnets 1002 are embedded in the bracket 1001. As mentioned above, this specific embodiment adopts this method. Specifically, the bracket 1001 can be composed of a ring-shaped member whose thickness matches the air gap 9 and is clearance fit, preferably a metal ring made of a non-magnetically conductive metal such as a stainless steel strip, and the edges of the bracket 1001 are evenly spaced with several A rectangular gap 1003, the two sides of the gap 1003 are arc-shaped grooves, the permanent magnet 1002 is a tile-shaped whose shape and thickness match the gap 1003, and the radian matches the diameter of the bracket 1001, and the edge cross-sections on both sides are arc-shaped, Matching with the arc grooves on both sides of the gap 1003, the permanent magnet 1002 is inserted in the gap 1003 to form the ring magnet assembly 10, and the ring magnet assembly 10 is arranged between the inner stator assembly 7 and the outer stator assembly 8 in the air gap 9.

In this specific embodiment, as shown in FIG. 7 , the mover body is composed of two separate left movers 11 and right movers 12 . The left mover 11 and the right mover 12 are both cylindrical members with one end open and one end provided with a bottom as a whole, and the two are symmetrically arranged. The cross-sectional shape of the cylinder wall of the left mover 11 and the right mover 12 is the same as the cross-sectional shape of the air gap 9 and the diameters are matched to form a clearance fit. A number of axial slits 13, the slits 13 are preferably evenly distributed, so that a number of top claws 14 are formed on the front of the cylinder wall of the left mover 11 and the right mover 12. The left end plate 2 and the right end plate 3 The corresponding position is provided with a slot hole 16 that matches the clearance of the top claws 14, and the top claws 14 of the left mover 11 and the right mover 12 are respectively inserted from the slot holes 16 of the left end plate 2 and the right end plate 3 Into the air gap 9 , the end faces on both sides of the ring magnet assembly 10 are pressed against each other from both sides to form an axial linkage.

The bottom center of the left mover 11 and the right mover 12 is provided with a through hole 15 for the linkage shaft 4 to pass through. The left mover 11 and the right mover 12 are coaxially arranged on the outside of the left end plate 2 and the right end plate 3 , the linkage shaft 4 passes through the shaft sleeve 1, the shaft hole 17 in the center of the left end plate 2 and the right end plate 3 and the through hole 15 in the bottom center of the left mover 11 and the right mover 12, the linkage shaft 4 Axially slidable relative to the shaft sleeve 1 , the two ends of the linkage shaft 4 are respectively fixedly connected with the left mover 11 and the right mover 12 to form an axial linkage.

The compressor mechanism includes a cylinder block 18, a piston 19 and a piston rod 20. The cylinder block 18 is a cylindrical member with an open end at one end and a bottom at the other end. A cylinder chamber 1801 is provided inside. The diameters of the left end plate 2 and the right end plate 3 are the same, and the open end of the cylinder body 18 is opposite to the left end plate 2 or the right end plate 3 and is fixedly connected. In this specific embodiment, the open end of the cylinder body 18 is connected to the right end plate 3 Oppositely and fixedly connected, the left end plate 2 is fixedly connected to an end cover 34, the center of the end cover 34 is provided with a shaft hole for sliding fit with the end of the linkage shaft 4, the piston 19 is arranged in the cylinder chamber 1801, The two ends of the linkage shaft 4 protrude from the through hole 15, one end is connected with the piston rod 20 to form a linkage, and the other end is slidingly fitted in the shaft hole in the center of the end cover 34 to form a reciprocating permanent magnet linear single-cylinder compressor. .

Specific embodiment 2:

This specific embodiment takes the high-efficiency and energy-saving reciprocating permanent magnet linear two-cylinder compressor as an example. As shown in FIG. 2 , the high-efficiency and energy-saving reciprocating permanent magnet linear two-cylinder compressor includes a power mechanism, a linkage shaft 4, a base assembly and two groups of compressor mechanism. A stator cavity is fixed on the base assembly, the stator assembly is arranged in the stator cavity, the linkage shaft is slidably disposed on the base assembly, the mover body and the linkage shaft Fixed connection, the two ends of the linkage shaft are respectively linked with the left piston rod and the right piston rod, forming the linkage connection between the mover body and the piston rod, forming a reciprocating permanent magnet linear double-cylinder compressor.

As shown in FIGS. 3-5 , in this specific embodiment, the base assembly includes a shaft sleeve 1 whose inner hole is adapted to the linkage shaft 4 , a left end plate 2 and a right end plate 3 , the left end plate 2 and the right end plate 3 The diameter of the plate 3 is preferably the same as the diameter of the outer stator assembly, the left end plate 2 and the right end plate 3 are symmetrically arranged, and the center of the left end plate 2 and the right end plate 3 is provided with a shaft hole 17 for the linkage shaft 4 to penetrate, so The left end plate 2 and the right end plate 3 can be respectively fixed on both ends of the shaft sleeve 1 by pressing nuts 5 or tight fitting. The annular space constitutes the stator cavity 6 , as shown in FIG. 6 .

The power mechanism includes a mover assembly and a stator assembly having excitation coils and arranged in pairs. The stator assembly is composed of an inner stator assembly 7 and an outer stator assembly 8. The inner stator assembly 7 and the outer stator assembly 8 are both annular as a whole, and the outer diameter of the inner stator assembly 7 is smaller than the inner stator assembly 8. Aperture, the inner stator assembly 7 is concentrically sleeved in the center of the outer stator assembly 8, the inner aperture of the inner stator assembly 7 is adapted to the outer diameter of the shaft sleeve 1, and the inner stator assembly 7 and the outer The stator assembly composed of the stator assembly 8 is arranged in the stator cavity 6 , and the gap between the inner stator assembly 7 and the outer stator assembly 8 constitutes the air gap 9 .

The mover assembly includes a mover body and a magnet assembly 10 . The magnet assembly 10 is annular to form a ring magnet assembly 10 . The diameter and thickness of the magnet assembly 10 are matched with the air gap 9 and clearance fit, so that the magnet assembly 10 can reciprocate in the air gap 9 . The magnet assembly 10 may be composed of corresponding annular permanent magnets as a whole; the magnet assembly 10 may also be composed of a bracket 1001 and a plurality of permanent magnets 1002 , and the plurality of permanent magnets 1002 are embedded on the bracket 1001 , which is adopted in this specific embodiment. Specifically, the bracket 1001 may be composed of a ring-shaped member with a thickness matching the air gap 9 and clearance fit. The edge of the bracket 1001 is evenly spaced with a number of rectangular gaps 1003, and the two sides of the gap 1003 are arranged in arc-shaped grooves. The permanent magnet 1002 is a tile-shaped whose shape and thickness match the gap 1003, and the radian matches the diameter of the bracket 1001. The edge cross-sections on both sides are arc-shaped, matching the arc-shaped grooves on both sides of the gap 1003. The permanent magnet 1002 The ring magnet assembly 10 is formed by being inserted into the gap 1003 , and the ring magnet assembly 10 is arranged in the air gap 9 between the inner stator assembly 7 and the outer stator assembly 8 .

In this specific embodiment, the mover body is composed of two separate left movers 11 and right movers 12 . The left mover 11 and the right mover 12 are both cylindrical members with one end open and one end provided with a bottom as a whole, and the two are symmetrically arranged. The cross-sectional shape of the cylinder wall of the left mover 11 and the right mover 12 is the same as the cross-sectional shape of the air gap 9 and the diameters are matched to form a clearance fit. A number of axial slits 13, the slits 13 are evenly distributed, so that a number of top claws 14 are formed on the front part of the cylinder wall of the left mover 11 and the right mover 12, and the left end plate 2 and the right end plate 3 correspond to There is a slot hole 16 matched with the clearance of the top claws 14, and the top claws 14 of the left mover 11 and the right mover 12 are respectively inserted from the slot holes 16 of the left end plate 2 and the right end plate 3 into the slot hole 16. In the air gap 9, the two end faces of the ring magnet assembly 10 are opposed to each other from both sides to form an axial linkage.

The bottom center of the left mover 11 and the right mover 12 is provided with a through hole 15 for the linkage shaft 4 to pass through. The left mover 11 and the right mover 12 are coaxially arranged on the outside of the left end plate 2 and the right end plate 3 , the linkage shaft 4 passes through the shaft sleeve 1, the shaft hole 17 in the center of the left end plate 2 and the right end plate 3 and the through hole 15 in the bottom center of the left mover 11 and the right mover 12, the linkage shaft 4 Axially slidable relative to the shaft sleeve 1 , the two ends of the linkage shaft 4 are respectively fixedly connected with the left mover 11 and the right mover 12 to form an axial linkage.

The two sets of compressor mechanisms respectively include a left cylinder block 21, a left piston 22 and a left piston rod 23, a right cylinder block 24, a right piston 25 and a right piston rod 26; the left cylinder block 21 and the right cylinder block 24 are both. A cylindrical member with an open end at one end and a bottom at the other end. The left cylinder block 21 and the right cylinder block 24 preferably have the same structure and are symmetrically arranged. The diameter of the open end of the left cylinder block 21 and the right cylinder block 24 is preferably the same as the The diameters of the plate 2 and the right end plate 3 are the same, the left cylinder block 21 is provided with a left cylinder chamber 2101, the right cylinder block 24 is provided with a left cylinder chamber 2401, and the left cylinder block 21 and the right cylinder block 24 have the same diameter. The open ends are respectively opposite to the left end plate 2 and the right end plate 3 and are fixedly connected, the left piston 22 is arranged in the left cylinder chamber 2101, the right piston 23 is arranged in the right cylinder chamber 2401, and the end of the linkage shaft 4 is The perforations 15 pass through and are respectively connected with the left piston rod 23 and the right piston rod 26 to form a linkage, forming a reciprocating permanent magnet linear double-cylinder compressor. After the dual compressors are formed, work can be done in both directions, and the efficiency is higher.

In order to further improve the efficiency of the compressor, preferably both the left cylinder block 21 and the right cylinder block 24 are provided with spring chambers 27, and elastic members 28 are provided in the spring chambers 27, and the elastic members 28 make the The mover assembly has an elastic damping force opposite to the movement direction of the mover assembly, so that the piston, the piston rod, the elastic member 28 and the mover assembly form an elastic system.

Specifically, in this embodiment, the elastic member 28 is a helical compression spring, the left cylinder block 21 and the right cylinder block 24 are provided with a stepped shaft-shaped cavity, and the diameter of the stepped shaft-shaped cavity is smaller. The cavity formed by the cylinder chamber, the larger diameter of the stepped shaft-shaped cavity constitutes the spring cavity 27, and the diameter of the spring cavity 27 has a gap between the diameter of the compression spring, the left mover 11 and the right mover 12. In cooperation, one end of the compression spring elastically presses against the shoulder step 29 of the cavity, and the other end elastically presses against the end surface of the left mover 11 or the right mover 12 to form the elastic system.

The shoulder step 29 of the cavity is provided with a groove 30 for clearance fit with the end of the compression spring, one end of the compression spring is in the groove 30, and the other end elastically abuts against the left mover 11 or the right mover 12 The end face forms the elastic system.

The high-efficiency and energy-saving permanent magnet linear double-cylinder compressor of the present invention is provided with a pair of elastic parts in the linear motor double-cylinder compressor, so that the mover has an elastic damping force opposite to the moving direction of the mover, so that the piston, A pair of elastic members and a mover form an elastic system, and the excitation current frequency of the stator matches the resonance frequency of the elastic system. Through the above arrangement, when the frequency of the excitation current used by the stator is the same as the resonance frequency of the elastic system, the maximum compression stroke of the compressor can be achieved with the minimum energy consumption, and therefore the most efficient and energy-saving.

Specific embodiment 3:

The present invention can also conveniently increase the thrust and improve the compressor power by increasing the number of stator components. That is, in the reciprocating permanent magnet linear compressor, there are two sets of stator assemblies arranged in pairs, two sets of the ring magnet assemblies, the linkage shaft, the base assembly and the two sets of the compressor mechanisms; the two sets of the compression The machine mechanism includes a left cylinder body, a left piston and a left piston rod, a right cylinder body, a right piston and a right piston rod respectively; two stator chambers are fixed on the base assembly, and the two sets of stator assemblies are arranged in pairs. They are respectively arranged in two stator cavities, the linkage shaft is slidably arranged on the base assembly, the mover body is fixedly connected with the linkage shaft, and the two ends of the linkage shaft are respectively connected with the left piston rod. Linked connection with the right piston rod constitutes the linkage connection between the mover body and the piston rod to form a reciprocating permanent magnet linear double-cylinder compressor.

This specific embodiment takes a double-thrust reciprocating permanent magnet linear double-cylinder compressor as an example, which includes a power mechanism, a linkage shaft 4, a base assembly and two sets of compressor mechanisms.

As shown in Figures 8-12, the base assembly includes a shaft sleeve 1 with an inner hole adapted to the linkage shaft 4, a left end plate 2, a left middle plate 32, a right middle plate 33 and a right end plate 3. The left end plate 3 The diameters of the plate 2, the left middle plate 32, the right middle plate 33 and the right end plate 3 are preferably the same as the diameter of the outer stator assembly, and the left middle plate 32 and the right middle plate 33 and the left end plate 2 and the right end plate 3 are respectively arranged symmetrically, The shaft sleeve 1 includes a left shaft sleeve 101 and a right shaft sleeve 102, and the center of the left end plate 2, the left middle plate 32, the right middle plate 33 and the right end plate 3 is provided with a shaft for the linkage shaft 4 to penetrate. Hole 17, the left end plate 2 and the left middle plate 32 can be respectively fixed on both ends of the left shaft sleeve 101 by pressing nuts 5 or tight fitting. The left end plate 2, the left middle plate 32 and the left shaft The annular space enclosed between the sleeves 101 constitutes the left stator cavity 601; the right middle plate 33 and the right end plate 3 can be fixedly arranged on both ends of the right shaft sleeve 102 by means of the compression nut 5 or tight fitting, respectively , the annular space enclosed between the right middle plate 33, the right end plate 3 and the right shaft sleeve 102 constitutes the right stator chamber 602, and the left stator chamber 601 and the right stator chamber 602 constitute the two stator chambers cavity.

In this specific embodiment, the power mechanism includes a mover assembly and two sets of stator assemblies, a left stator assembly and a right stator assembly. The left stator assembly is composed of a left inner stator assembly 701 and a left outer stator assembly 801. The left inner stator assembly 701 and the left outer stator assembly 801 are both annular as a whole, and the outer diameter of the left inner stator assembly 701 is smaller than The inner diameter of the left outer stator assembly 801, the left inner stator assembly 701 is concentrically sleeved in the center of the left outer stator assembly 801, and the inner diameter of the left inner stator assembly 701 is the same as the outer diameter of the left shaft sleeve 101 Adaptation, the left stator assembly composed of the left inner stator assembly 701 and the left outer stator assembly 801 is arranged in the left stator cavity 601, and the gap between the left inner stator assembly 701 and the left outer stator assembly 801 The air gap 9 is formed.

Similarly, the right inner stator assembly 702 and the right outer stator assembly 802 are both annular as a whole, the outer diameter of the right inner stator assembly 702 is smaller than the inner diameter of the right outer stator assembly 802, and the right inner stator assembly 702 Concentrically sleeved on the center of the right outer stator assembly 802, the inner diameter of the right inner stator assembly 702 is adapted to the outer diameter of the right shaft sleeve 102, and the right inner stator assembly 702 and the right outer stator assembly are composed of The right stator assembly composed of 802 is disposed in the right stator cavity 602 , and the gap between the right inner stator assembly 702 and the right outer stator assembly 802 constitutes the air gap 9 .

The mover assembly includes a mover body and two sets of magnet assemblies 10 , and the two sets of magnet assemblies 10 preferably have the same structure. The magnet assembly 10 is in the shape of a circular ring, and the diameter and thickness of the magnet assembly 10 are matched with the air gap 9 and clearance fit, so that the magnet assembly 10 can reciprocate in the air gap 9 . The magnet assembly 10 may be composed of corresponding annular permanent magnets as a whole. As shown in FIGS. 13 and 14 , the magnet assembly 10 may also be composed of a bracket 1001 and several permanent magnets 1002 . The several permanent magnets 1002 It is embedded in the bracket 1001, which is adopted in this specific embodiment. Specifically, the bracket 1001 may be composed of a ring-shaped member with a thickness matching the air gap 9 and clearance fit. The edge of the bracket 1001 is evenly spaced with a number of rectangular gaps 1003, and the two sides of the gap 1003 are arranged in arc-shaped grooves. The permanent magnet 1002 is a tile-shaped whose shape and thickness match the gap 1003, and the radian matches the diameter of the bracket 1001. The edge cross-sections on both sides are arc-shaped, matching the arc-shaped grooves on both sides of the gap 1003. The permanent magnet 1002 The ring magnet assembly 10 is formed by being inserted into the gap 1003 , and the ring magnet assembly 10 is arranged in the air gap 9 between the inner stator assembly 7 and the outer stator assembly 8 .

In this specific embodiment, the mover body is composed of three separate left movers 11 , middle movers 31 and right movers 12 . The left mover 11 and the right mover 12 are both straight cylindrical members with an open end at one end and a bottom at the other end, and the two are symmetrically arranged. The middle mover 31 is a straight cylindrical member with both ends open. , the diameter of the middle mover 31 and the right mover are the same, and the cross-sectional shape of the cylinder wall is the same as the cross-sectional shape of the air gap, and the gap fits,

The cylinder walls of the open ends of the left and right movers are provided with a number of axial slots, so that a number of top claws are formed at the front of the cylinder walls of the left and right movers. The sub 31 is arranged between the left middle plate and the right middle plate. The cylinder walls at both ends of the middle mover 31 are also provided with a number of axial slots to form a number of top claws. The left end plate and the left middle plate , The corresponding positions of the right middle plate and the right end plate are provided with slot holes that match the gaps of the top claws, and the top claws of the left mover, middle mover 31 and right mover are respectively , The slot holes of the right middle plate and the right end plate are inserted into the air gap, and the two end faces of the two sets of ring magnet assemblies are pressed against each other from both sides to form a linkage; the bottom center of the left mover and the right mover is provided with The through hole for the linkage shaft to pass through, the linkage shaft passes through the shaft sleeve, the left end plate, the left middle plate, the right middle plate and the shaft hole in the center of the right end plate and the center of the bottom center of the left mover and the right mover. The perforation and the inner hole of the middle mover 31, the linkage shaft and the shaft sleeve are axially slidable relative to each other, and the two ends of the linkage shaft are respectively fixedly connected with the left mover and the right mover to form an axial linkage;

The two sets of compressor mechanisms respectively include a left cylinder block 21, a left piston 22 and a left piston rod 23, a right cylinder block 24, a right piston 25 and a right piston rod 26; the left cylinder block 21 and the right cylinder block 24 are both. A cylindrical member with an open end at one end and a bottom at the other end. The left cylinder block 21 and the right cylinder block 24 preferably have the same structure and are symmetrically arranged. The diameter of the open end of the left cylinder block 21 and the right cylinder block 24 is preferably the same as the The diameters of the plate 2 and the right end plate 3 are the same, the left cylinder block 21 is provided with a left cylinder chamber 2101, the right cylinder block 24 is provided with a left cylinder chamber 2401, and the left cylinder block 21 and the right cylinder block 24 have the same diameter. The open ends are respectively opposite to the left end plate 2 and the right end plate 3 and are fixedly connected, the left piston 22 is arranged in the left cylinder chamber 2101, the right piston 23 is arranged in the right cylinder chamber 2401, and the end of the linkage shaft 4 is The perforations 15 pass through and are respectively connected with the left piston rod 23 and the right piston rod 26 to form a linkage, forming a reciprocating permanent magnet linear double-cylinder compressor.

In order to further improve the efficiency of the compressor, in this specific embodiment, it is preferred that the piston, the piston rod, the elastic member 28 and the mover assembly form an elastic system. The specific structure is the same as that of the previous embodiment, and is not repeated here.

The present invention is not limited to the above-mentioned specific embodiments, but also includes those of ordinary skill in the art according to the contents disclosed in the present invention, and can adopt other various equivalent specific embodiments. Any simple changes or modifications can be made by using the design structure and idea of the present invention. , all fall within the protection scope of the present invention.

Claims (20)

1. A high-efficiency energy-saving reciprocating permanent magnet linear compressor comprises a power mechanism and a compressor mechanism, wherein the power mechanism comprises a rotor assembly and stator assemblies which are provided with magnet exciting coils and are arranged in pairs, and gaps are formed among the stator assemblies arranged in pairs; the rotor assembly comprises a rotor body and a magnet assembly, and the compressor mechanism comprises a cylinder body, a piston and a piston rod; the method is characterized in that: the rotor body is composed of two or more split parts, the magnet assemblies are movably arranged in air gaps of the stator assemblies arranged in pairs, the two or more split parts of the rotor body oppositely abut against the magnet assemblies from two sides along the motion direction of the rotor body to form linkage, the rotor assemblies are movably arranged, and the rotor body is in linkage connection with the piston rod.

2. The high efficiency energy saving reciprocating permanent magnet linear compressor of claim 1, wherein: the stator assemblies arranged in pairs comprise inner stator assemblies and outer stator assemblies, the inner stator assemblies and the outer stator assemblies are both annular, the outer diameter of each inner stator assembly is smaller than the inner diameter of each outer stator assembly, the inner stator assemblies are sleeved at the centers of the outer stator assemblies, and gaps between the inner stator assemblies and the outer stator assemblies form annular air gaps; the magnet assembly is annular to form an annular magnet assembly, and two parts of the split rotor body oppositely abut against the end faces of two sides of the annular magnet assembly from two axial sides to form linkage.

3. The high efficiency energy saving reciprocating permanent magnet linear compressor of claim 2, wherein: the reciprocating permanent magnet linear compressor is provided with a group of stator components arranged in pairs, a group of compressor mechanisms, a linkage shaft and a base component; the stator assembly is arranged in the stator cavity, the linkage shaft is slidably arranged on the base assembly, the rotor body is fixedly connected with the linkage shaft, and the linkage shaft is in linkage connection with the piston rod to form the rotor body which is in linkage connection with the piston rod, so that the reciprocating permanent magnet linear single-cylinder compressor is formed.

4. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 3, wherein: the motor base assembly comprises a shaft sleeve, a left end plate and a right end plate, wherein the inner hole of the shaft sleeve is matched with the linkage shaft, the center of the left end plate and the center of the right end plate are provided with shaft holes for the linkage shaft to penetrate through, the left end plate and the right end plate are respectively and fixedly arranged at the two ends of the shaft sleeve, an annular space defined by the left end plate, the right end plate and the shaft sleeve forms a stator containing cavity, the inner stator assembly and the outer stator assembly are arranged in the stator containing cavity, and the annular magnet assembly is arranged in an air gap between the inner stator assembly and the outer stator assembly; the rotor body is composed of a left rotor and a right rotor which are arranged in a split mode, the left rotor and the right rotor are cylindrical components which are integrally formed, one end of each cylindrical component is provided with an opening, the bottom of each cylindrical component is arranged at one end of each cylindrical component, the cross section shapes of the cylindrical walls of the left rotor and the right rotor are the same as the cross section shapes of air gaps and are in clearance fit, a plurality of axial cutting grooves are formed in the cylindrical walls of the opening ends of the left rotor and the right rotor, a plurality of top claws are formed in the front portions of the cylindrical walls of the left rotor and the right rotor, slot holes which are in clearance fit with the top claws are formed in the corresponding positions of the left end plate and the right end plate, the top claws of the left rotor and the right rotor are respectively inserted into the air gaps from the slot holes of; the center of the bottoms of the left rotor and the right rotor is provided with a through hole for a linkage shaft to pass through, the linkage shaft passes through a shaft sleeve, shaft holes in the centers of the left end plate and the right end plate and the through hole in the center of the bottoms of the left rotor and the right rotor, the linkage shaft and the shaft sleeve are axially arranged in a relatively sliding manner, and two ends of the linkage shaft are respectively fixedly connected with the left rotor and the right rotor to form axial linkage; the cylinder body is a cylindrical component with an opening at one end and a bottom at the other end, a cylinder chamber is arranged in the cylinder body, the opening end of the cylinder body is opposite to and fixedly connected with the left end plate, the piston is arranged in the cylinder chamber, and the end part of the linkage shaft penetrates out of the through hole to be connected with the piston rod to form linkage.

5. The high efficiency energy saving reciprocating permanent magnet linear compressor of claim 2, wherein: the reciprocating permanent magnet linear compressor is provided with a group of stator components, a linkage shaft, a base component and two groups of compressor mechanisms which are arranged in pairs; the two groups of compressor mechanisms respectively comprise a left cylinder body, a left piston rod, a right cylinder body, a right piston and a right piston rod; the stator assembly is fixedly arranged on the base assembly, the stator assembly is arranged in the stator cavity, the linkage shaft is slidably arranged on the base assembly, the rotor body is fixedly connected with the linkage shaft, and two ends of the linkage shaft are respectively in linkage connection with the left piston rod and the right piston rod to form the rotor body which is in linkage connection with the piston rods, so that the reciprocating permanent magnet linear double-cylinder compressor is formed.

6. The high efficiency and energy saving reciprocating permanent magnet linear compressor according to claim 5, wherein: the motor base assembly comprises a shaft sleeve, a left end plate and a right end plate, wherein the inner hole of the shaft sleeve is matched with the linkage shaft, the center of the left end plate and the center of the right end plate are provided with shaft holes for the linkage shaft to penetrate through, the left end plate and the right end plate are respectively and fixedly arranged at the two ends of the shaft sleeve, an annular space defined by the left end plate, the right end plate and the shaft sleeve forms a stator containing cavity, the inner stator assembly and the outer stator assembly are arranged in the stator containing cavity, and the annular magnet assembly is arranged in an air gap between the inner stator assembly and the outer stator assembly; the rotor body is composed of a left rotor and a right rotor which are arranged in a split mode, the left rotor and the right rotor are cylindrical components which are integrally formed, one end of each cylindrical component is provided with an opening, the bottom of each cylindrical component is arranged at one end of each cylindrical component, the cross section shapes of the cylindrical walls of the left rotor and the right rotor are the same as the cross section shapes of air gaps and are in clearance fit, a plurality of axial cutting grooves are formed in the cylindrical walls of the opening ends of the left rotor and the right rotor, a plurality of top claws are formed in the front portions of the cylindrical walls of the left rotor and the right rotor, slot holes which are in clearance fit with the top claws are formed in the corresponding positions of the left end plate and the right end plate, the top claws of the left rotor and the right rotor are respectively inserted into the air gaps from the slot holes; the center of the bottoms of the left rotor and the right rotor is provided with a through hole for a linkage shaft to pass through, the linkage shaft passes through a shaft sleeve, shaft holes in the centers of the left end plate and the right end plate and the through hole in the center of the bottoms of the left rotor and the right rotor, the linkage shaft and the shaft sleeve are axially arranged in a relatively sliding manner, and two ends of the linkage shaft are respectively fixedly connected with the left rotor and the right rotor to form axial linkage; the left cylinder body and the right cylinder body are both cylindrical components with one ends opened and the other ends provided with bottoms, a left cylinder chamber and a right cylinder chamber are respectively arranged in the left cylinder body and the right cylinder body, the left cylinder body and the right cylinder body are arranged at the left end and the right end, the open ends of the left cylinder body and the right cylinder body are respectively opposite to and fixedly connected with the left end plate and the right end plate, the left piston and the right piston are respectively arranged in the left cylinder chamber and the right cylinder chamber, and two ends of the linkage shaft penetrate out of the through holes to be respectively connected with the left piston rod and the right.

7. The high efficiency and energy saving reciprocating permanent magnet linear compressor according to claim 5 or 6, wherein: the left cylinder body and the right cylinder body are both provided with spring containing cavities, elastic parts are arranged in the spring containing cavities, the elastic parts respectively enable the rotor assembly to have elastic damping force opposite to the moving direction of the rotor assembly, and the piston, the elastic parts and the rotor assembly form an elastic system.

8. The high efficiency, energy saving reciprocating permanent magnet linear compressor of claim 7, wherein: the elastic part is a spiral compression spring, stepped shaft-shaped cavities are arranged in the left cylinder body and the right cylinder body, a cavity with a smaller diameter in each stepped shaft-shaped cavity forms a cylinder chamber, a cavity with a larger diameter in each stepped shaft-shaped cavity forms a spring cavity, the diameter of each spring cavity is in clearance fit with the diameters of the compression spring, the left rotor and the right rotor, one end of each compression spring elastically abuts against a shoulder step of each cavity, and the other end of each compression spring elastically abuts against the end face of the left rotor or the right rotor to form the elastic system.

9. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 8, wherein: and a groove in clearance fit with the end part of the compression spring is arranged on the shoulder step of the cavity, one end of the compression spring is positioned in the groove, and the other end of the compression spring elastically abuts against the end surface of the left rotor or the right rotor to form the elastic system.

10. The high efficiency energy saving reciprocating permanent magnet linear compressor of claim 2, wherein: the reciprocating type permanent magnet linear compressor is provided with two groups of stator assemblies arranged in pairs, two groups of annular magnet assemblies, a linkage shaft, a base assembly and two groups of compressor mechanisms; the two groups of compressor mechanisms respectively comprise a left cylinder body, a left piston rod, a right cylinder body, a right piston and a right piston rod; the motor base assembly is fixedly provided with two stator containing cavities, the two stator assemblies arranged in pairs are respectively arranged in the two stator containing cavities, the linkage shaft is slidably arranged on the motor base assembly, the rotor body is fixedly connected with the linkage shaft, and two ends of the linkage shaft are respectively in linkage connection with the left piston rod and the right piston rod to form the rotor body and the piston rods in linkage connection, so that the reciprocating permanent magnet linear double-cylinder compressor is formed.

11. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 10, wherein: the engine base component comprises a shaft sleeve with an inner hole matched with the linkage shaft, a left end plate, a left middle plate, a right middle plate and a right end plate; the rotor body consists of a left rotor, a middle rotor and a right rotor which are arranged in a split manner; the center of the left end plate, the left middle plate, the right middle plate and the right end plate is provided with a shaft hole for the penetration of a linkage shaft, the left end plate, the left middle plate, the right middle plate and the right end plate are respectively and sequentially fixedly arranged on a shaft sleeve, an annular space enclosed among the left end plate, the left middle plate and the shaft sleeve forms a left stator cavity, an annular space enclosed among the right middle plate, the right end plate and the shaft sleeve forms a right stator cavity, the left stator cavity and the right stator cavity form two stator cavities, two groups of stator assemblies arranged in pairs are respectively arranged in the left stator cavity and the right stator cavity, two groups of annular magnet assemblies are respectively arranged in air gaps of the two groups of annular magnet assemblies, the left rotor and the right rotor are cylindrical components which are integrally provided with an opening at one end and a bottom at one end, the middle rotor is a straight cylindrical component, and the diameters of the left rotor, the middle rotor and the right, the section shape of the cylinder wall is the same as that of the air gap and is in clearance fit with the section shape of the cylinder wall, a plurality of axial cutting grooves are formed in the cylinder walls of the opening ends of the left rotor and the right rotor, a plurality of top claws are formed on the front parts of the cylinder walls of the left rotor and the right rotor, a plurality of axial cutting grooves are also formed in the cylinder walls of the two ends of the middle rotor, the middle rotor is arranged between the left middle plate and the right middle plate, slot holes matched with the top claw clearances are formed in the corresponding positions of the left end plate, the left middle plate, the right middle plate and the right end plate, the top claws of the left rotor, the middle rotor and the right rotor are respectively inserted into the air gap from the slot holes of the left end plate, the left middle plate, the right middle plate and the right end plate, and are respectively abutted against two end faces of two groups of annular magnet; the center of the bottoms of the left rotor and the right rotor is provided with a through hole for a linkage shaft to pass through, the linkage shaft passes through shaft holes in the centers of the shaft sleeve, the left end plate, the left middle plate, the right middle plate and the right end plate and through holes in the centers of the bottoms of the left rotor and the right rotor and inner holes of the middle rotor, the linkage shaft and the shaft sleeve are axially arranged in a relatively sliding manner, and two ends of the linkage shaft are respectively fixedly connected with the left rotor and the right rotor to form axial linkage; the left cylinder body and the right cylinder body are both cylindrical components with one ends opened and the other ends provided with bottoms, a left cylinder chamber and a right cylinder chamber are respectively arranged in the left cylinder body and the right cylinder body, the open ends of the left cylinder body and the right cylinder body are respectively opposite to and fixedly connected with the left end plate and the right end plate, the left piston and the right piston are respectively arranged in the left cylinder chamber and the right cylinder chamber, and two ends of the linkage shaft penetrate out of the through holes to be respectively connected with the left piston rod and the right piston rod to form linkage.

12. The high efficiency and energy saving reciprocating permanent magnet linear compressor according to claim 10 or 11, wherein: the left cylinder body and the right cylinder body are both provided with spring containing cavities, elastic parts are arranged in the spring containing cavities, the elastic parts respectively enable the rotor assembly to have elastic damping force opposite to the moving direction of the rotor assembly, and the piston, the elastic parts and the rotor assembly form an elastic system.

13. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 12, wherein: the elastic part is a spiral compression spring, stepped shaft-shaped cavities are arranged in the left cylinder body and the right cylinder body, a cavity with a smaller diameter in each stepped shaft-shaped cavity forms a cylinder chamber, a cavity with a larger diameter in each stepped shaft-shaped cavity forms a spring cavity, the diameter of each spring cavity is in clearance fit with the diameters of the compression spring, the left rotor and the right rotor, one end of each compression spring elastically abuts against a shoulder step of each cavity, and the other end of each compression spring elastically abuts against the end face of the left rotor or the right rotor to form the elastic system.

14. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 13, wherein: and a groove in clearance fit with the end part of the compression spring is arranged on the shoulder step of the cavity, one end of the compression spring is positioned in the groove, and the other end of the compression spring elastically abuts against the end surface of the left rotor or the right rotor to form the elastic system.

15. The high efficiency energy saving reciprocating permanent magnet linear compressor according to any one of claims 1 to 6, characterized in that: the magnet assembly comprises a support and a plurality of permanent magnets, and the permanent magnets are embedded on the support.

16. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 15, wherein: the support matches and clearance fit's cyclic annular component by thickness and air gap, the even interval in edge of support sets up a plurality of rectangle breach, and the breach both sides are the arc recess setting, the permanent magnet matches for shape and thickness and breach, and the radian with the tile shape that the support diameter matches, both sides marginal cross-section are the arc, matches with breach both sides arc recess, the permanent magnet is inserted and is established constitute in the breach annular magnet subassembly.

17. The high efficiency and energy saving reciprocating permanent magnet linear compressor according to any one of claim 7, wherein: the magnet assembly comprises a support and a plurality of permanent magnets, and the permanent magnets are embedded on the support.

18. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 17, wherein: the support matches and clearance fit's cyclic annular component by thickness and air gap, the even interval in edge of support sets up a plurality of rectangle breach, and the breach both sides are the arc recess setting, the permanent magnet matches for shape and thickness and breach, and the radian with the tile shape that the support diameter matches, both sides marginal cross-section are the arc, matches with breach both sides arc recess, the permanent magnet is inserted and is established constitute in the breach annular magnet subassembly.

19. The high efficiency and energy saving reciprocating permanent magnet linear compressor according to claim 10 or 11, wherein: the magnet assembly comprises a support and a plurality of permanent magnets, and the permanent magnets are embedded on the support.

20. The high efficiency, energy efficient reciprocating permanent magnet linear compressor of claim 19, wherein: the magnet assembly comprises a support and a plurality of permanent magnets, and the permanent magnets are embedded on the support.

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