CN110005590A - A moving coil linear compressor - Google Patents

Abstract

The invention provides a moving coil type linear compressor, which includes a compressor casing, a stator assembly and a mover assembly. The mover assembly includes a wire wrapping frame located between an inner stator and a split outer stator, and a wire wrapping frame wound on the wire wrapping frame. The coil, the left end of the wire wrap frame is connected with the piston rod of the cylinder through the connecting frame; a permanent magnet magnetic ring is installed on the inner ring of the split outer stator, and the wire wrap frame is driven by the magnetic field force generated between the permanent magnet magnetic ring and the coil. , and then drive the piston of the cylinder to compress the gas to do work. The shock-absorbing support in the present invention is a structure with a built-in cylindrical spring between the two rings, which can dampen and support the internal structure of the compressor, reduce the transmission of vibration generated by the movement of the internal structure of the compressor to the outer shell, and has better performance. Filter the effect of vibration. The resonant spring assembly gives a certain restoring force to the piston and the mover assembly during the entire working process of the compressor, so that the entire compressor system achieves a more ideal working state with good stability and reliability.

Description

A moving coil linear compressor

technical field

The present invention relates to the technical field of linear compressors, in particular to a moving coil type linear compressor.

Background technique

Refrigeration equipment such as refrigerators and air conditioners have now become an indispensable part of our daily life. The compressor is the core component of refrigeration equipment such as refrigerators and air conditioners. It compresses the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant, and then the high-temperature and high-pressure refrigerant enters the refrigeration cycle system through the condenser and evaporator. The function of other refrigeration system components realizes refrigeration, and the compressor continuously inhales, compresses and exhausts, so as to realize the circulating refrigeration work of the refrigeration equipment. The compressors are driven by the motor to drive the piston movement to compress the refrigerant to do work, and discharge the high-temperature and high-pressure refrigerant to the exhaust pipe to provide power for the refrigeration cycle. The power source of the compressor is a motor, and the motor can be divided into two types, one is a traditional rotary motor, and the other is a linear motor. A compressor that uses a linear motor is called a linear compressor.

At present, most domestic refrigerators, air conditioners and other refrigeration equipment use rotary compressors, which use the crank connecting rod mechanism to convert the rotary motion of the motor into the linear reciprocating motion of the piston. This kind of compressor is economical, but its frictional resistance is large. , The efficiency is low, and it is difficult to improve the cooling performance. Compared with rotary compressors, linear compressors can reduce friction loss, improve system efficiency, and greatly improve refrigeration performance because the crank and connecting rod mechanism can be omitted. However, the stability, efficiency, noise and service life of the existing linear compressors need to be improved.

SUMMARY OF THE INVENTION

In view of the above technical problems, the purpose of the present invention is to provide a moving coil linear compressor with a novel structure, the entire compressor is compact in structure, stable in connection, good in stability, high in efficiency, low in noise and long in service life.

In order to achieve the above object, the present invention provides a moving coil linear compressor, comprising a compressor casing, a stator assembly and a mover assembly located in the compressor casing, characterized in that:

The stator assembly includes an inner stator located on the central axis of the compressor casing, a split outer stator arranged around the inner stator, and an end cover for fixing the split outer stator, and the end cover is supported by shock absorption The parts are supported at both ends of the compressor casing;

The mover assembly includes a wire package holder located between the inner stator and the split outer stator, a coil wound on the wire package holder, and the left end of the wire package holder is connected with the piston rod of the cylinder through a connecting frame ;

The left end of the split outer stator is provided with a resonance spring assembly, which is used to give a certain restoring force to the piston of the cylinder and the mover assembly during the operation of the compressor;

A permanent magnet magnetic ring is installed on the inner ring of the split outer stator, and the magnetic field force generated between the permanent magnet magnetic ring and the coil drives the wire package frame to move, and then drives the piston of the cylinder to compress the gas to do work.

Further, the compressor casing is also provided with a suction and exhaust component for increasing the suction and exhaust effect during the working process of the compressor and reducing the working noise of the compressor;

The suction and exhaust assembly includes a suction pipe located at the right end of the compressor casing, an exhaust pipe located at the left end of the compressor casing, a suction valve plate, an exhaust valve plate, and an exhaust muffler;

The suction valve plate is fixed on the left end of the piston, the exhaust valve plate is installed in the inner ring groove of the cylinder; the right end of the exhaust muffler is screwed on the left end of the cylinder, and the exhaust valve plate is The left end of the muffler is connected with the exhaust pipe through an exhaust pipe locking cap.

Further, the suction valve sheet is a spoke-type structure, and the middle position is a circular baffle; the exhaust valve sheet is a fan blade structure, one end of which is in close contact with the inner ring groove of the cylinder, and the other end is in close contact with the inner ring groove of the cylinder. The right end of the exhaust muffler is pressed tightly;

The inside of the exhaust muffler is a labyrinth-type cavity structure, and the right end and the inside are respectively provided with axial ventilation holes and four radial ventilation holes arranged in the circumferential direction. The right end of the exhaust muffler and the left end of the cylinder enter the exhaust muffler through four radial ventilation holes, then enter the right end of the chamber of the exhaust muffler through the axial ventilation holes, and finally pass through the radial ventilation at the right end of the inner chamber. The hole enters the labyrinth chamber, and finally the high temperature and high pressure gas enters the refrigeration cycle system through the exhaust pipe locking cap and the exhaust pipe connected to the exhaust muffler.

Preferably, the resonant spring assembly includes a leaf spring and a resonant cylindrical spring, the middle position of the leaf spring is connected to the wire package frame through a transition gasket, and the circumferential position of the outer ring of the leaf spring is connected to the left and right through the mounting plate. side end cap connection;

The resonant cylindrical spring is installed between the left end cover and the connecting frame and between the spring seat and the connecting frame, and the right end of the spring seat is closely attached to the mounting plate.

Preferably, the connecting frame is a four-spoke structure, the end of the spoke structure is a two-way spring support seat structure, and the middle position of the connecting frame close to the cylinder is a threaded mounting hole for connecting the piston rod, which is close to the wire package The middle position of the frame is the threaded mounting hole for connecting the wire wrapping frame. The wire wrapping frame, the transition gasket, the leaf spring, the connecting frame and the piston are connected together through the threaded connection. The movement of the coil and the wire wrapping frame drives the leaf spring. , transition gasket and connecting frame, piston movement, so as to achieve compressor compression work.

Further, the shock absorbing support is a structure with a built-in cylindrical spring between the two rings, wherein the inner side of the outer ring and the radial direction of the outer side of the inner ring are provided with two rows of support feet, wherein each row has 8 and Evenly distributed along the circumferential direction, it is used to fix and support cylindrical springs.

Preferably, the left shock absorbing support is installed at the left flange inside the compressor casing, its outer ring is matched with the inner hole formed at the left flange, and the inner ring of the inner ring has a thread, which is compatible with the inner ring. The thread on the outer side of the exhaust muffler is threaded, so as to realize the fixation of the left shock absorption support;

The right shock-absorbing support is installed at the right flange inside the compressor casing, the outer ring is matched with the inner hole formed at the right flange, and the inner ring of the inner ring is in the middle of the right end cover. The flanges of the fuselage are matched to realize the fixation of the right shock-absorbing support.

Optionally, the cylinder is of a liner type structure, and its left inner ring has threads for fixing the exhaust muffler;

The middle position of the inner wall of the cylinder is used to fix the exhaust valve plate, and at the same time, four small exhaust holes are evenly distributed in the circumferential position on the right side of the cylinder. There are cylinder mounting holes on the lug plate outside the cylinder for connecting with the left end cover And fixedly install the cylinder;

The outer ring on the right side of the cylinder has threads for installing the cylinder head, and the flow direction of the small exhaust hole is from the inner wall of the cylinder to the upper edge of the middle position of the cylinder.

Further, there are four ventilation holes evenly distributed in the circumferential direction of the left end of the piston. When the piston is compressed, a small amount of high-pressure gas at the left end of the piston reaches the edge of the contact between the piston and the cylinder through these ventilation holes, forming a layer of gas film between the piston and the cylinder. , plays the role of gas bearing;

A gas passage is formed from the middle position of the left end of the piston to the middle position of the piston rod.

Optionally, the compressor casing is divided into an upper semicircular casing and a lower square cavity structure casing, the left and right middle positions are both provided with flanges, and the upper and lower parts of the compressor casing are combined in the middle. The parts are connected together by welding;

The split outer stator is divided into a left outer stator and a right outer stator, and grooves and bosses are respectively provided at the contact surfaces of the two; Ring groove.

From the above, the shock-absorbing support in the moving magnet compressor of the new structure of the present invention is a structure with a built-in cylindrical spring between the two rings, and one is installed at the left and right ends, which plays the role of shock-absorbing and supporting the internal structure of the compressor. The transmission of the vibration generated by the movement of the internal structure of the compressor to the casing is reduced, and the vibration is better filtered. Secondly, the moving coil linear compressor clamps the permanent magnet between the two split outer stators, so that the permanent magnet is tightly fixed. By reducing the distance between the coil and the outer stator and the inner stator, the gas is reduced. Therefore, the utilization rate of the magnetic field is greatly improved, the possibility of magnetic leakage is reduced, and the specific thrust of the motor is finally increased, and the efficiency of the motor is improved. Thirdly, the plate spring and the resonant cylindrical spring in the resonance spring assembly of the moving coil linear compressor give a certain restoring force to the piston and the mover assembly during the whole process of the compressor, so that the entire compressor system can achieve a more ideal work. In addition, it can prevent the piston from colliding with the cylinder before and out of the cylinder after the movement, thereby greatly improving the stability and reliability of the entire compressor system. Finally, the structural design of the suction valve plate, the exhaust valve plate, the piston, the cylinder and the exhaust muffler in the suction and exhaust assembly of the moving coil linear compressor makes the suction and exhaust effect and noise of the whole compressor work. The control has reached a better state.

Description of drawings

1 is a schematic cross-sectional view of the overall structure of the moving coil linear compressor of the present invention;

Fig. 2 is the left side view of the internal structure of the moving coil linear compressor of the present invention;

3 is a schematic structural diagram of a left shock absorbing support of the moving coil linear compressor of the present invention;

Fig. 4 is the longitudinal sectional view of Fig. 3;

5 is a schematic structural diagram of the right shock-absorbing support member of the moving coil linear compressor of the present invention;

Fig. 6 is the longitudinal sectional view of Fig. 5;

7 is a schematic diagram of the connection between the suction and exhaust components of the moving coil linear compressor of the present invention and the cylinder;

8 is a schematic structural diagram of the exhaust muffler of the moving coil linear compressor of the present invention;

Fig. 9 is the longitudinal sectional view of Fig. 8;

10 is a schematic structural diagram of an exhaust valve piece of a moving coil linear compressor of the present invention;

11 is a schematic structural diagram of a suction valve piece of a moving coil linear compressor of the present invention;

12 is a schematic structural diagram of the cylinder of the moving coil linear compressor of the present invention;

Fig. 13 is the longitudinal sectional view of Fig. 12;

14 is a schematic structural diagram of a piston and a piston rod of the moving coil linear compressor of the present invention;

FIG. 15 is a longitudinal sectional view of FIG. 14 .

In the picture, 1. Copper rigid pipe; 2. PVC rigid plastic exhaust pipe; 3. Left shock-absorbing support; 4. Exhaust pipe locking cap; 5. Exhaust muffler; 6. Exhaust valve Sheet; 7. Cylinder; 8. Suction valve sheet; 9. Left end cover; 10. Piston; 11. Connecting frame; 12. Upper compressor shell; 13. Left outer stator; 14. Right outer stator; 15 , the first long bolt; 16, the mounting plate; 17, the right end cover; 18, the right shock absorber support; 19, the suction pipe; 20, the transition flange; 21, the wire package frame; 22, the inner stator; 23, coil; 24, permanent magnet ring; 25, lower compressor casing; 26, transition gasket; 27, mounting seat; 28, second long bolt; 29, spring seat; 30, cylinder head; 31, resonance Cylindrical spring; 32, leaf spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention. Inside.

It should be noted that all directional indications (such as up, down, left, right...) in the embodiments of the present invention are only used to explain the relative positional relationship between the various components under a certain posture (as shown in the accompanying drawings), Movement conditions, etc., if the specific posture changes, the directional indication also changes accordingly. Wherein, “left” corresponds to the left side in FIG. 1 , and “right” corresponds to the right side in FIG. 1 .

Referring to FIGS. 1 to 15, the moving coil linear compressor of the present invention will be described in detail. The moving coil linear compressor of the present invention includes compressor casings 12, 25, damping supports 3, 18, suction and exhaust components, and stators Components, mover components, resonant spring components and end caps 9, 17, mounting seat 27, mounting plate 16, transition gasket 26. The compressor casing is divided into an upper semi-circular casing 12 and a lower square cavity structure casing 25, and flanges are provided in the middle positions of the left and right sides for installing the shock-absorbing supports 3, 18 to compress the The upper side and the lower side part of the casing are connected together by welding.

The shock-absorbing supports 3 and 18 are structures with built-in cylindrical springs between the two rings, wherein two rows of support feet are arranged radially on the inner side of the outer ring and the outer side of the inner ring, wherein each row has 8 and Evenly distributed along the circumferential direction, it is used to fix and support the cylindrical spring. In the present invention, a shock-absorbing support is installed at the left and right ends, wherein the left shock-absorbing support 3 is installed on the left flange inside the compressor shell, and its outer The ring is matched with the inner hole formed at the left flange, and the inner ring of the inner ring has a thread, which is threadedly connected with the thread on the outside of the exhaust muffler 5, so as to realize the fixation of the left shock-absorbing support 3. The right shock absorbing support 18 is installed at the right flange inside the compressor casing, its outer ring is matched with the inner hole formed at the right flange, and the inner ring of the inner ring is connected to the right end cover 17 The flange at the middle position is matched to realize the fixation of the right shock-absorbing support 18. The application of the shock-absorbing supports 3 and 18 can dampen and support the internal structure of the compressor. The application of the shock-absorbing support The transmission of the vibration generated by the movement of the internal structure of the compressor to the casing is reduced, and the vibration is better filtered. In the process of structural design of the compressor casing, the shape of the compressor casing is made close to the internal structure to the greatest extent, so that the volume of the compressor is small.

A mounting seat 27 is welded on the outer wall of the lower side square cavity structure shell 25 of the compressor shell, and the mounting seat 27 is four rectangular thin plates with mounting holes provided on them for fixing the compressor.

The intake and exhaust assembly of the present invention includes an intake pipe 19, an exhaust pipe, an intake valve plate 8, an exhaust valve plate 6, an exhaust muffler 5, and an exhaust pipe locking cap 4, wherein the intake pipe 19 It is a hard copper pipe, which is directly welded to the suction pipe mounting hole left on the right side of the compressor casing by welding. The exhaust pipe is divided into two parts, one of which is a hard plastic exhaust pipe 2 of PVC material drawn from the internal structure of the compressor, which is locked to the exhaust muffler inside the compressor through the exhaust pipe locking cap 4 5, the other part is made of the same material as the suction pipe 19, which is a copper material hard pipe 1, which is welded to the exhaust pipe installation hole left on the left side of the compressor casing by welding. The hard plastic exhaust pipe 2 is inserted into the copper material rigid pipe 1 to realize the exhaust working process of the compressor and the communication with other external system components.

The cylinder 7 in the present invention is of a liner type structure, and its left inner ring has threads for fixing the exhaust muffler 5 . There are four small exhaust holes evenly distributed to the positions. There are cylinder mounting holes on the lug plate on the outside of the cylinder 7, which are used to connect with the left end cover 9 and fixedly install the cylinder 7. The outer ring on the right side of the cylinder 7 has threads for Install the cylinder head 30. The inner ring of the cylinder head 30 is threaded for connecting with the outer ring on the right side of the cylinder 7 to fix the cylinder head 30. The middle position of the cylinder head 30 has a piston rod that can accommodate the cylinder 7. There are four weight-reducing ventilation holes evenly distributed in the circumferential direction. The flow direction of the exhaust small hole is from the inner wall of the cylinder to the upper edge of the middle position of the cylinder.

The outer diameter of the left end of the piston 10 of the cylinder 7 is the same in size as the inner diameter of the cylinder 7, and four ventilation holes are evenly distributed in the circumferential direction. When the piston 10 is compressed, a small amount of high-pressure gas at the left end of the piston passes through these ventilation holes. 7 contact edges, a layer of air film is formed between the piston 10 and the cylinder 7, which acts as a gas bearing, thereby greatly reducing the friction between the piston 10 and the cylinder 7, and at the same time, it plays a certain supporting role for the piston 10. . A gas channel is formed from the middle position of the left end of the piston 10 to the middle position of the piston rod, which is the suction gas channel. The remaining positions of the left end of the piston 10 except for the ventilation hole are the fixing screw holes of the suction valve plate, which are used for fixing the suction valve. Piece 8, the end of the piston rod close to the piston 10 is threaded for fixed installation of the piston 10, and the maximum stroke of the piston 10 is 14mm when it reciprocates.

The suction valve plate 8 is fixed on the left end of the piston 10, which is a spoke-type structure, and the middle position is a circular blocking plate, which is the open position in the suction state, and diverges radially from the middle position to the surrounding, There is a valve plate fixing hole on the spoke structure, which is used to install the valve plate. The end of the divergence is a circular structure, which is close to the left end face of the piston 10. When the pressure difference between the left and right ends of the piston 10 reaches the suction valve plate 8 When the opening pressure is , the suction valve plate 8 is opened and starts to enter the suction working state. The exhaust valve sheet 6 is installed in the inner ring groove of the cylinder 7, which is a fan blade structure, and the middle position is the fixed position of the exhaust valve sheet, one end of which is close to the middle position of the inner wall of the cylinder 7, and the other end is close to the middle position of the inner wall of the cylinder 7. Press the right end of the exhaust muffler 5, and the outside of the exhaust valve plate 6 is in the shape of four fan blades, which are used to block the exhaust hole of the cylinder 7. During the operation of the compressor, when the exhaust pressure is greater than the exhaust valve When the sheet opening pressure is reached, the exhaust valve sheet 6 is opened, and begins to enter the exhaust working state.

The interior of the exhaust muffler 5 of the present invention is a labyrinth-type cavity structure, and the right end and the inside thereof are respectively provided with axial ventilation holes and four radial ventilation holes arranged in the circumferential direction, and the high-temperature and high-pressure gas flows through the inner labyrinth-type cavity. structure, most of the noise is eliminated, and then enters the refrigeration cycle system, the left end of the exhaust muffler 5 has a locking cap installation threaded hole, and the left end of the exhaust pipe locking cap 4 is a zigzag structure for clamping Lock the PVC hard plastic exhaust pipe 2, and the right end of the exhaust pipe locking cap 4 has an external thread, which is used to connect with the internal thread on the exhaust muffler 5, so as to fix the exhaust pipe locking cap effect. The right end of the exhaust muffler 5 has an external thread and is threadedly connected to the left end of the cylinder 7 for fixing the exhaust muffler 5. The high temperature and high pressure gas discharged from the exhaust valve plate 6 is the right end of the self-exhaust muffler 5 . The left end of the cylinder 7 enters the exhaust muffler 5 through four radial ventilation holes, then enters the right end of the chamber of the exhaust muffler 5 through the axial ventilation holes, and finally enters the exhaust muffler 5 through the radial ventilation holes at the right end of the inner chamber. In the labyrinth chamber, the high temperature and high pressure gas finally enters the refrigeration cycle system through the exhaust pipe locking cap 4 connected to the exhaust muffler 5 and the exhaust copper rigid pipe 1 .

The stator assembly of the present invention includes an inner stator 22 located on the central axis of the compressor casing, and split outer stators 13 and 14 arranged around the inner stator 22. The inner rings of the split outer stators 13 and 14 are mounted with a shape of The ring-shaped permanent magnet magnetic ring 24, the inner stator 22 is a cylindrical shape, one side has a mounting hole in the middle, and the outer ring has a groove in the middle, and the inner stator 22 is connected to the inner stator 22 through the transition flange 20. The split outer stator is connected, and the transition flange 20 has an I-shaped structure, which plays a role of transition support for the inner stator 22 . The split outer stator is divided into a left outer stator 13 and a right outer stator 14. The contact surfaces of the two are respectively provided with grooves and bosses. The cooperation between the two determines the position of the split outer stator and ensures the separation of The coaxiality of the one-piece outer stator, the inner rings of the left outer stator 13 and the right outer stator 14 respectively have grooves for installing the permanent magnet magnetic ring 24, and the permanent magnet magnetic ring 24 is embedded in the inner ring of the split outer stator. in the slot.

The mover assembly of the present invention includes a coil frame 21 and a coil 23, the wire frame 21 is located between the inner stator 22 and the split outer stators 13, 14, and the outer ring of the wire frame 21 has three bosses , there is a groove between each two bosses for winding the coil 23, the three bosses are respectively provided with lead grooves for drawing out copper wires, and the left end face has a weight-reducing hole and a threaded mounting hole, and is connected by The frame 11 is connected with the piston rod of the cylinder 7, and the material of the coil 23 is enameled copper wire.

The resonant spring assembly of the present invention is arranged at the left ends of the split outer stators 13 and 14 and includes a leaf spring 32 and a resonant cylindrical spring 31. The right end face of the leaf spring 32 in the middle position is closely fitted with the transition gasket 26, and the outer surface of the leaf spring 32 There are plate spring mounting holes in the circumferential direction of the ring, which are used to install and fix the plate spring. The transition gasket 26 is circular, and four threaded mounting holes are evenly arranged in the circumferential direction. flange. The plate spring 32 is provided with an involute groove in the circumferential direction, and the circumferential direction of the middle part has four mounting holes, and the positions of the four mounting holes are the same as the positions of the threaded mounting holes of the transition gasket 26, which not only plays The function of installation and fixation also plays the role of circumferential limit on the integrated structure of the coil 23 and the wire package frame 21 .

The connecting frame 11 is a four-spoke structure, the end of the spoke structure is a two-way spring support seat structure, the middle position near the cylinder 7 is a piston thread mounting hole, and the middle position near the wire package frame 21 is four. The threaded mounting hole of the wire wrapping frame connects the wire wrapping frame 21, the transition gasket 26, the leaf spring 32, the connecting frame 11, and the piston 10 into an integrated structure through the connection of the thread, and the movement of the coil 23 and the wire wrapping frame 21 drives the plate The spring 32, the transition washer 26, the connecting frame 11, and the piston 10 move, so as to realize the compressor compression work.

In addition, the two ends of the split outer stators 13 and 14 are respectively connected to the left end cover 9 and the left end cover 17 through the mounting plate 16 , and the circumferential directions of the mounting plate 16 with different radial distances are respectively uniformly distributed. Eight mounting holes, the mounting holes evenly distributed on the inside of the left mounting plate 16 are used for fixing the mounting plate and pressing the plate spring 32, and the mounting holes evenly distributed on the outside are used for fixing the left end cover 9 and the left end cover 17. The left end cover 9 is a four-spoke frame structure with a spring seat on the inner side, and four cylinder mounting holes are evenly distributed in the circumferential direction of the middle position of the left end for connecting with the lug plate outside the cylinder 7 and fixing the cylinder 7, The outer side of the right end of the left end cover 9 is provided with an end cover fixing hole, which is used for connecting and fixing with the mounting plate 16 on the left side. The right end cover 17 is also a four-spoke frame structure, and an end cover fixing hole is formed on the outer side of the left end, and is fixed to the right mounting plate 16 through the end cover fixing hole.

In addition, the right end of the spring seat 29 is in close contact with the mounting plate 16 , and the resonant cylindrical spring 31 is installed between the left end cover 9 and the connecting frame 11 and between the spring seat 29 and the connecting frame 11 . The spring seat 29 , the mounting plate 16 , the leaf spring 32 , the split outer stators 13 , 14 are connected and fixed together by long bolts 15 , 28 .

The whole working process of the moving-coil linear compressor of the present invention is as follows: when alternating current is supplied to the coil 23 of the compressor, the coil 23 will generate an alternating magnetic field. In this case, the coil 23 and the line The package frame 21 as a whole is in the permanent magnetic field formed by the permanent magnet magnetic ring. Due to the interaction between the alternating magnetic field and the permanent magnetic field, a magnetic field force is generated between the two. The magnitude and direction of the magnetic field force change continuously with the change of the alternating magnetic field. , due to the generated magnetic field force, the wire package frame 21 and other parts fixed with it move together, thereby pushing the compressor piston to do reciprocating linear motion to compress the gas to do work.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. a moving coil linear compressor, comprising a compressor casing, a stator assembly and a mover assembly positioned in the compressor casing, characterized in that: The stator assembly comprises an inner stator (22) located on the central axis of the compressor casing, a split outer stator (13, 14) arranged around the inner stator (22), and the split outer stator (13, 14) is arranged around the inner stator (22). 14) End caps (9, 17) for fixing, the end caps (9, 17) are supported at both ends of the compressor casing by shock-absorbing supports (3, 18); The mover assembly comprises a wire package holder (21) located between the inner stator (22) and the split outer stators (13, 14), and a coil (23) wound on the wire package holder (21) , the left end of the wire package holder (21) is connected with the piston rod of the cylinder (7) through the connecting frame (11); The left end of the split outer stator (13, 14) is provided with a resonance spring assembly, which is used to give a certain restoring force to the piston (10) of the cylinder (7) and the mover assembly during the operation of the compressor; A permanent magnet magnetic ring (24) is installed on the inner ring of the split outer stator (13, 14), and the wire package frame (21) is driven by the magnetic field force generated between the permanent magnet magnetic ring (24) and the coil (23). ) moves, and then drives the piston of the cylinder (7) to compress the gas to do work. 2 . The moving coil linear compressor according to claim 1 , wherein the compressor casing is further provided with suction and exhaust for increasing the suction and exhaust effect during the working process of the compressor and reducing the working noise of the compressor. 3 . gas components; The suction and exhaust assembly comprises a suction pipe (19) located at the right end of the compressor casing, an exhaust pipe located at the left end of the compressor casing, a suction valve sheet (8), an exhaust valve sheet (6), and an exhaust muffler (5); The suction valve plate (8) is fixed on the left end of the piston (10), and the exhaust valve plate (6) is installed in the inner ring groove of the cylinder (7); the exhaust muffler ( The right end of 5) is threadedly connected to the left end of the cylinder (7), and the left end of the exhaust muffler (5) is connected to the exhaust pipe through an exhaust pipe locking cap (4). 3. The moving-coil linear compressor according to claim 2, characterized in that, the suction valve piece (8) is of a wheel-spoke structure, and the middle position thereof is a circular blocking piece; the exhaust valve piece (8) 6) It is a fan-blade structure, one end of which is in close contact with the inner ring groove of the cylinder (7), and the other end is pressed against the right end of the exhaust muffler (5); The inside of the exhaust muffler (5) is a labyrinth-type cavity structure, and its right end and inside are respectively provided with axial ventilation holes and four radial ventilation holes arranged in the circumferential direction, which are discharged from the exhaust valve sheet (6). The high temperature and high pressure gas enters the exhaust muffler (5) from the right end of the exhaust muffler (5) and the left end of the cylinder (7) through four radial ventilation holes, and then enters the exhaust muffler (5) through the axial ventilation holes ( 5) The right end of the chamber, and finally enters the labyrinth chamber through the radial ventilation hole at the right end of the inner chamber, and finally the high temperature and high pressure gas passes through the exhaust pipe locking cap (4) connected to the exhaust muffler (5). And the exhaust pipe enters the refrigeration cycle system. 4. The moving coil linear compressor according to claim 1, wherein the resonance spring assembly comprises a plate spring (32) and a resonance cylindrical spring (31), and the middle position of the plate spring (32) passes through The transition gasket (26) is connected with the wire package holder (21), and the circumferential position of the outer ring of the leaf spring (32) is connected with the left end cover (9) through the mounting plate (16); The resonant cylindrical spring (31) is installed between the left end cover (9) and the connecting frame (11) and between the spring seat (29) and the connecting frame (11), and the right end of the spring seat (29) is tightened. affixed to the mounting plate (16). 5. The moving coil type linear compressor according to claim 4, wherein the connecting frame (11) is a four-spoke structure, and the end of the spoke structure is a bidirectional spring support seat type structure, and the connecting frame (11) is a four-spoke structure. 11) The middle position near the cylinder (7) is the threaded mounting hole for connecting the piston rod, and the middle position near the wire package holder (21) is the threaded mounting hole for connecting the wire package holder (21). The connection of the wire wrapping frame (21), the transition gasket (26), the leaf spring (32), the connecting frame (11) and the piston (10) is integrated into one, the movement of the coil (23) and the wire wrapping frame (21) The plate spring (32), the transition washer (26), the connecting frame (11), and the piston (10) are driven to move, thereby realizing compressor compression work. 6. The moving-coil linear compressor according to claim 2, wherein the shock-absorbing support (3, 18) is a structure in which a cylindrical spring is built between two rings, wherein the inner side of the outer ring and the Two rows of supporting feet are arranged radially on the outer side of the inner ring, wherein each row has 8 and are evenly distributed along the circumferential direction for fixing and supporting the cylindrical spring. 7 . The moving coil linear compressor according to claim 6 , wherein the left shock absorbing support ( 3 ) is installed at the left flange inside the compressor casing, and its outer ring and the left convex The inner hole formed at the edge is matched, and the inner ring of the inner ring has a thread, which is threadedly connected with the thread on the outer side of the exhaust muffler (5), so as to realize the fixation of the left shock-absorbing support (3); The right shock-absorbing support (18) is installed at the right flange inside the compressor casing, the outer ring is matched with the inner hole formed at the right flange, and the inner ring of the inner ring is connected to the right end. The flange at the middle position of the cover (17) is matched to realize the fixation of the right shock-absorbing support (18). 8. The moving coil linear compressor according to claim 3, characterized in that the cylinder (7) is of a bushing type structure, and its left inner ring has threads for fixing the exhaust muffler ( 5); The middle position of the inner wall of the cylinder (7) is used to fix the exhaust valve plate (6), and at the same time, four small exhaust holes are evenly distributed in the circumferential position of the right side of the cylinder (7). The cylinder mounting hole is used to connect with the left end cover (9) and fix the cylinder (7); The right outer ring of the cylinder (7) has threads for installing the cylinder head (30), and the flow direction of the small exhaust hole is from the inner wall of the cylinder to the upper edge of the middle position of the cylinder. 9 . The moving coil linear compressor according to claim 1 , wherein four vent holes are evenly distributed in the circumferential direction of the left end of the piston (10), and a small amount of high-pressure gas at the left end of the piston when the piston (10) is compressed. 10 . Through these vent holes, the edge of the contact between the piston (10) and the cylinder (7) is reached, and an air film is formed between the piston (10) and the cylinder (7), which acts as a gas bearing; A gas channel is formed from the middle position of the left end of the piston (10) to the middle position of the piston rod. 10. The moving coil linear compressor according to claim 1, wherein the compressor casing is divided into an upper semicircular casing (12) and a lower square cavity structure casing (25), There are flanges in the middle positions of the left and right sides, and the upper and lower parts of the compressor casing are connected together by welding; The split outer stator is divided into a left outer stator (13) and a right outer stator (14), and grooves and bosses are respectively provided at the contact surfaces of the two; the left outer stator (13) and the right outer stator (14) ) respectively have grooves for installing permanent magnet rings (24).