CN221442772U - Compressor and electrical equipment - Google Patents

Abstract

The present application relates to a compressor and an electrical apparatus, the compressor comprising: a machine body structure; the cylinder sleeve is movably arranged on the machine body structure along the first direction; one end of the piston is positioned in the cylinder sleeve, and the other end of the piston is movably arranged on the machine body structure and can perform eccentric motion around an eccentric axis in a controlled manner; the first direction, the axial direction of the cylinder sleeve and the eccentric axial direction are coplanar in pairs and do not intersect. When one end of the piston is eccentrically moved, the other end of the piston is driven to reciprocate in the cylinder sleeve, the piston head of the piston can reciprocate in the first direction on the engine body structure due to the thrust generated by the piston head of the piston to the cylinder sleeve, so that uneven stress between the piston and the cylinder sleeve is relieved, noise and vibration are reduced, and the experience of a user is improved.

Description

Compressor and electrical equipment

Technical Field

The application relates to the technical field of household appliances, in particular to a compressor and electrical equipment.

Background

The oxygenerator is a machine for preparing oxygen, the oxygenerator realizes the separation of oxygen and nitrogen based on the difference of the adsorption capacity of the adsorbent to oxygen and nitrogen in air, when the air enters an adsorption tower filled with the adsorbent such as molecular sieve after being compressed by a compressor, the adsorption separation process of oxygen and nitrogen is completed by utilizing the different adsorptivity of the molecular sieve to oxygen and nitrogen under different pressures, and the adsorbed nitrogen is analyzed under reduced pressure.

At present, a compressor in an oxygenerator generally adopts piston type movement to prepare high-pressure gas, and when the oxygenerator works, a piston of the compressor is driven by a motor shaft, so that the piston reciprocates in a cylinder sleeve, the piston is driven by the motor shaft to not move along a fixed direction, and further stress between the piston and the cylinder sleeve is uneven, and finally, larger noise and vibration are generated in the process of the movement of the piston in the cylinder sleeve, so that the user experience degree is reduced.

Disclosure of utility model

Based on the above, it is necessary to provide a compressor and an electric apparatus for solving the problem that a large noise and vibration are generated during the movement of the piston in the cylinder liner.

A compressor, comprising:

a machine body structure;

the cylinder sleeve is movably arranged on the machine body structure along the first direction;

One end of the piston is positioned in the cylinder sleeve, and the other end of the piston is movably arranged on the machine body structure and can perform eccentric motion around an eccentric axis in a controlled manner;

The first direction, the axial direction of the cylinder sleeve and the eccentric axial direction are coplanar in pairs and do not intersect.

In one embodiment, the engine body structure comprises a cylinder cover assembly and a base assembly, one end of the piston, which is far away from the cylinder sleeve, is movably mounted on the base assembly, the cylinder cover assembly is connected with the base assembly, and two ends of the cylinder sleeve in the axial direction are movably mounted on the cylinder cover assembly and the base assembly along the first direction.

In one embodiment, a first guiding part is formed on the cylinder cover assembly, a first limiting part is arranged on the piston, and the first limiting part can be matched with the first guiding part and limit the movement range of the cylinder sleeve in the first direction.

In one embodiment, the cylinder cover assembly comprises a valve plate, the valve plate is mounted at one end of the cylinder sleeve, which is far away from the base assembly, and a first guide part is arranged on the valve plate.

In one embodiment, the first guiding portion is a limiting groove formed in the inner wall of the valve plate, the limiting groove extends longitudinally in the first direction, the first limiting portion is a limiting block protruding out of the circumferential side wall of the cylinder sleeve, and the limiting block extends into the limiting groove.

In one embodiment, the two limiting grooves are symmetrically arranged on two sides of the valve plate in the direction of the eccentric axis;

The limiting blocks comprise two limiting blocks, the two limiting blocks are symmetrically arranged on two sides of the cylinder sleeve in the direction of the eccentric axis and extend into one limiting groove respectively.

In one embodiment, the cylinder cover assembly further comprises a sealing element, the sealing element is arranged between the valve plate and the cylinder sleeve in a sealing mode, two first buffer parts are arranged on the sealing element, the two first buffer parts are distributed on two sides of the cylinder sleeve at intervals along a first direction, and each buffer part is located on a movement path of the cylinder sleeve in the first direction.

In one embodiment, the second guiding portion is provided on the base assembly, the second limiting portion is provided on the piston, and the second limiting portion can be matched with the second guiding portion and limit the movement range of the cylinder sleeve in the first direction.

In one embodiment, the base assembly comprises a base body, one end of the cylinder sleeve, far away from the cylinder cover assembly, is installed on the base body, the piston is movably installed on the base body, and the second guide part is arranged on the base body.

In one embodiment, the second guiding portion is a bar-shaped hole formed in the base body, the bar-shaped hole extends longitudinally along the first direction, the second limiting portion is a limiting column mounted on the cylinder sleeve, and the limiting column extends into the bar-shaped hole.

In one embodiment, a plurality of limit posts are arranged on the end face of one side, facing the base body, of the cylinder sleeve, and the limit posts are arranged at intervals around the axis of the cylinder sleeve;

The base body is provided with a plurality of strip-shaped holes, and when the cylinder sleeve is installed on the base body, each limit column penetrates through one of the strip-shaped holes.

In one embodiment, the base assembly further comprises a bottom pad, the bottom pad is installed between the cylinder sleeve and the base body, the bottom pad is provided with an avoidance hole, and the limiting column penetrates through the avoidance hole.

In one embodiment, the bottom pad is further provided with a plurality of second buffer portions, the second buffer portions are arranged around the cylinder sleeve at intervals in the circumferential direction, and each second buffer portion is located on a movement path of the cylinder sleeve in the first direction.

An electrical apparatus comprising a compressor as claimed in any one of the preceding claims.

Above-mentioned compressor is installed on the body structure through the cylinder liner in first direction X movability for the cylinder liner has certain movable range, and eccentric motion is done to the one end of piston, drives the other end of piston and is reciprocating motion's in the cylinder liner in-process in the cylinder liner, and the thrust that the piston head of piston produced to the cylinder liner can make the piston reciprocate along first direction in the body structure, thereby alleviates the atress inhomogeneous between piston and the cylinder liner, has reduced noise and vibration production, has improved user's experience degree.

Drawings

Fig. 1 is a schematic diagram illustrating a structure of a compressor with a piston moving to a bottom dead center according to some embodiments of the present application.

Fig. 2 is a schematic diagram of the structure of the compressor in the embodiment of fig. 1, in which the piston moves from bottom dead center to top dead center.

Fig. 3 is a schematic diagram of the piston movement to top dead center of the compressor of the embodiment of fig. 1.

Fig. 4 is a schematic diagram of the structure of the compressor according to the embodiment of fig. 1, in which the piston moves from the top dead center to the bottom dead center.

Fig. 5 is a schematic structural view of a cylinder liner of the compressor of the embodiment of fig. 1.

Fig. 6 is a schematic structural view of a valve plate of the compressor of the embodiment of fig. 1.

Fig. 7 is a schematic view of the gasket of the compressor of the embodiment of fig. 1.

Fig. 8 is a schematic structural view of a base body of the compressor in the embodiment of fig. 1.

Fig. 9 is a schematic view of the structure of the bottom pad of the compressor of the embodiment of fig. 1.

Reference numerals illustrate:

A cylinder liner 10; a first limit part 11; a second limit part 12; a stopper 13; a limit post 14;

a piston 20; a piston head 21; a link 22;

A cylinder head assembly 30; a first guide 31; a valve plate 32; a cylinder head body 33; a limit groove 34; a seal 35; a first buffer 36;

a base assembly 40; a second guide 41; a base body 42; a bar-shaped hole 43; a bottom pad 44; a second buffer 45; a relief hole 46;

A first direction X.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a compressor according to an embodiment of the present application, where the compressor includes a body mechanism, a cylinder liner 10 and a piston 20, the cylinder liner 10 is movably mounted on the body mechanism along a first direction X, one end of the piston 20 is located in the cylinder liner 10, and the other end is movably mounted on the body mechanism and is controllably eccentrically moved about an axis. In the embodiment of fig. 1, the first direction X is a left-right direction, the axial direction of the cylinder liner 10 is an up-down direction, the eccentric axis direction is a direction perpendicular to the paper surface, and when one end of the piston 20 located outside the cylinder liner 10 moves eccentrically around the eccentric axis, one end of the piston 20 located inside the cylinder liner 10 moves along the axial direction of the cylinder liner 10.

Specifically, the compressor further comprises a motor shaft, the piston 20 comprises a piston head 21 and a connecting rod 22, the piston head 21 is positioned in the cylinder sleeve 10, the circumferential side wall of the piston head 21 is in sealing abutting joint with the inner wall of the cylinder sleeve 10, one end of the connecting rod 22 is hinged with the piston head 21, the other end of the connecting rod 22 is connected with the motor shaft so as to drive one end of the connecting rod 22 to eccentrically move around an eccentric axis through the motor shaft, and the connecting rod 22 drives the piston head 21 to repeatedly move in the cylinder sleeve 10, so that gas in the cylinder sleeve 10 is compressed.

Referring to fig. 1, 2 and 3, when the piston 20 moves from bottom dead center to top dead center, and the piston head 21 moves to the middle of the cylinder liner 10, one end of the connecting rod 22 is in an eccentric state, the piston head 21 will incline with the connecting rod 22 to a certain degree, so that the piston head 21 has a thrust force to one side of the cylinder liner 10, as shown in fig. 2, so that the stress between the piston 20 and the cylinder liner 10 is uneven, and larger noise and vibration are generated. Similarly, referring to fig. 2, 3 and 4, when the piston 20 moves from the top dead center to the bottom dead center, the piston head 21 generates thrust on the other side of the cylinder liner 10, as shown in fig. 3, so that the stress between the piston 20 and the cylinder liner 10 is uneven, and larger noise and vibration are generated.

The cylinder sleeve 10 is movably arranged on the machine body structure in the first direction X, so that the cylinder sleeve 10 has a certain movement range, when one end of the piston 20 is eccentrically moved to drive the other end of the piston 20 to reciprocate in the cylinder sleeve 10, the piston head 21 of the piston 20 can reciprocate the cylinder sleeve 10 in the first direction X, so that uneven stress between the piston 20 and the cylinder sleeve 10 is relieved, noise and vibration are reduced, and user experience is improved.

In some embodiments of the present application, the machine body structure includes a base assembly 40 and a cylinder cover assembly 30, and an end of the piston 20 remote from the port platform is movably mounted on the base assembly 40, i.e., an end of the connecting rod 22 is movably mounted on the base assembly 40 to make eccentric movement about an eccentric axis, and the motor shaft is also disposed on the base assembly 40 to drive the piston 20 to move.

The cylinder cover assembly 30 is connected with the base assembly 40, the two ends of the cylinder sleeve 10 in the axial direction are movably arranged on the cylinder cover assembly 30 and the base assembly 40 along the first direction X, the base assembly 40 is used for supporting the cylinder sleeve 10, the cylinder cover assembly 30 is used for covering the cylinder sleeve 10 and sealing one end of the cylinder sleeve 10, so that the piston 20 can compress air in the cylinder sleeve 10 through movement of the cylinder sleeve 10, and compressed air can be discharged out of the compressor through the cylinder cover assembly 30.

In some embodiments, the cylinder cover assembly 30 is provided with a first guiding portion 31, the piston 20 is provided with a first limiting portion 11, and the first limiting portion 11 can cooperate with the first guiding portion 31 and limit the movement range of the cylinder liner 10 in the first direction X. Thereby avoiding the collision between the cylinder sleeve 10 and other parts on the machine body structure caused by the movement of the cylinder sleeve 10 beyond the range, and the damage to the cylinder sleeve 10.

In particular to some embodiments, the cylinder cover assembly 30 includes a cylinder cover body 33 and a valve plate 32, the valve plate 32 is mounted at one end of the cylinder liner 10 far away from the base assembly 40, the cylinder cover body 33 is mounted on the valve plate 32 and is connected with the base assembly 40 through fasteners such as bolts, so that the valve plate 32 is pressed on the cylinder liner 10, the valve plate 32 can have a sealing effect on the cylinder liner 10, the valve plate 32 is also provided with an air valve, and the compressor is alternately opened and closed through the air suction valve and the air valve when in reciprocating motion so as to realize circulation of air suction, compression and exhaust.

Referring to fig. 5 and 6, the valve plate 32 is provided with the first guiding portion 31, and since the valve plate 32 is directly contacted with the end portion of the cylinder liner 10, the first guiding portion 31 is disposed on the valve plate 32, so that the first guiding portion 31 can be conveniently matched with the first limiting portion 11 of the cylinder liner 10, and a good limiting effect is achieved.

Specifically, the first guiding portion 31 is a limiting groove 34 formed in an inner wall of the valve plate 32, the limiting groove 34 extends lengthwise along the first direction X, the first limiting portion 11 is a limiting block 13 protruding from a circumferential side wall of the cylinder liner 10, and the limiting block 13 extends into the limiting groove 34, so that a movement range of the cylinder liner 10 is limited by movement of the limiting block 13 in the limiting groove 34. It should be understood that the engagement between the first limiting portion 11 and the first guiding portion 31 may be, but not limited to, the above-mentioned manner of limiting the limiting groove 34 and the limiting block 13, or may be a manner in which the first limiting portion 11 abuts against two first guiding portions 31 arranged at intervals along the first direction X. To restrict the movement of the first stopper 11 and thus the movement of the cylinder liner 10.

Further, the two limiting grooves 34 are symmetrically arranged on two sides of the valve plate 32 in the eccentric axis direction, the two limiting blocks 13 are symmetrically arranged on two sides of the cylinder sleeve 10 in the eccentric axis direction, and the two limiting blocks 13 extend into one of the limiting grooves 34 respectively. Thus, in the moving process of the cylinder sleeve 10, both sides of the cylinder sleeve 10 can be limited by the corresponding limiting grooves 34, so that the limiting effect of the cylinder sleeve 10 is better, and the movement of the cylinder sleeve 10 is smoother.

In some embodiments, referring to fig. 7, to improve the tightness between the valve plate 32 and the cylinder liner 10, the cylinder head assembly 30 further includes a seal 35, the seal 35 being sealingly disposed between the valve plate 32 and the cylinder liner 10 to seal a gap between the valve plate 32 and the cylinder liner 10. Wherein, two first buffer parts 36 are arranged on the sealing element 35, the two first buffer parts 36 are distributed at intervals on two sides of the cylinder sleeve 10 along the first direction X, and each buffer part is positioned on the moving path of the cylinder sleeve 10 in the first direction X.

In this way, in the moving process of the cylinder liner 10, the movement range of the cylinder liner 10 in the first direction X is limited by the guide groove and the limiting block 13, and when the cylinder liner 10 moves to be close to or has moved to the limit position in the first direction X, the cylinder liner 10 will contact with one of the first buffer parts 36, so that the cylinder liner 10 is prevented from impacting the valve plate 32, the cylinder liner 10 or the valve plate 32 is prevented from being damaged, and meanwhile, the movement of the cylinder liner 10 can be buffered by the first buffer part 36, so that noise and vibration generated by the movement of the cylinder liner 10 are reduced.

In some embodiments of the present application, referring to fig. 8, the base assembly 40 is provided with a second guiding portion 41, the piston 20 is provided with a second limiting portion 12, and the second limiting portion 12 can cooperate with the second guiding portion 41 and limit the movement range of the cylinder liner 10 in the first direction X. In this way, the first guiding part 31 on the cylinder cover assembly 30 is used for limiting the movement range of the top end of the cylinder sleeve 10 in the first direction X, the second guiding part 41 on the base assembly 40 is used for limiting the movement range of the bottom end of the cylinder sleeve 10 in the first direction X, and the first guiding part and the second guiding part are combined, so that the movement range limiting effect of the cylinder sleeve 10 is better, and meanwhile, the movement of the cylinder sleeve 10 is smoother.

In some embodiments, the base assembly 40 includes a base body 42, and an end of the cylinder liner 10 away from the cylinder head assembly 30 is mounted on the base body 42, and the base body 42 not only can be used for mounting the cylinder liner 10, but also can provide mounting and movement space for eccentric movement of the motor shaft and the piston 20, and the base body 42 is connected with the cylinder head body 33 through fasteners such as bolts, so that the cylinder head body 33 compresses the cylinder liner 10 on the base body 42. The base body 42 is provided with a second guiding portion 41, so that the movement of the bottom end of the cylinder liner 10 in the first direction X is limited by the second guiding portion 41.

Specifically, the second guiding portion 41 is a bar-shaped hole 43 formed on the base body 42, the bar-shaped hole 43 extends lengthwise along the first direction X, the second limiting portion 12 is a limiting post 14 mounted on the cylinder liner 10, and the limiting post 14 extends into the bar-shaped hole 43, so that the movement of the cylinder liner 10 in the first direction X is limited by the movement of the limiting post 14 in the bar-shaped hole 43. The engagement of the second stopper 12 and the second guide 41 with the first guide 31 may be, but is not limited to, the engagement of the stopper groove 34 and the stopper 13, or the engagement of the second stopper 12 with the second guide 41 may be performed by two second guide portions spaced apart in the second direction. To restrict movement of the second stopper 12 and thus the cylinder liner 10.

Further, a plurality of limiting posts 14 are arranged on the end face of one side of the cylinder sleeve 10 facing the base body 42, and the limiting posts 14 are arranged at intervals around the axis of the cylinder sleeve 10. The base body 42 is provided with a plurality of bar-shaped holes 43, and when the cylinder sleeve 10 is installed on the base body 42, each limiting column 14 is penetrated through one of the bar-shaped holes 43. In this way, the plurality of positions at the bottom end of the cylinder sleeve 10 are limited by the movement of the plurality of limiting posts 14 in the plurality of bar-shaped holes 43, so that the limiting effect of the cylinder sleeve 10 can be improved, and the movement of the cylinder sleeve 10 can be smoother.

In the embodiment of fig. 1, the base body 42 is provided with a mounting surface for mounting the cylinder liner 10, the mounting surface is provided with a movable hole for moving the piston 20, the mounting surface is provided with a plurality of strip-shaped holes 43, the strip-shaped holes 43 are all arranged around the movable hole, and the limiting columns 14 are also arranged on the end surface of the cylinder liner 10, so that after the cylinder liner 10 is mounted on the mounting surface, each limiting column 14 on the end surface of the cylinder liner 10 can extend into the strip-shaped hole 43, and the end surface of the cylinder liner 10 can form good contact with the mounting surface, thereby ensuring the supporting effect of the base body 42 on the cylinder liner 10.

In particular to some embodiments, referring to fig. 9, the base assembly 40 further includes a bottom pad 44, the bottom pad 44 is installed between the cylinder liner 10 and the base body 42, so as to avoid the cylinder liner 10 from directly contacting the base body 42, and the bottom pad 44 is further provided with avoiding holes 46, the number of the avoiding holes 46 is consistent with and one-to-one corresponding to the number of the strip-shaped holes 43, and each limiting post 14 passes through the avoiding hole 46 and enters the corresponding strip-shaped hole 43.

The bottom pad 44 is further provided with a plurality of second buffering portions 45, the plurality of second buffering portions 45 are disposed around the cylinder liner 10 at intervals in the circumferential direction, and each second buffering portion 45 is located on a movement path of the cylinder liner 10 in the first direction X. In this way, when the cylinder liner 10 moves in the first direction X to approach or has moved to the limit position, the cylinder liner 10 will contact with at least one second buffer portion 45, so as to avoid the cylinder liner 10 from impacting the base body 42, and damage to the cylinder liner 10, and at the same time, the second buffer portion 45 can also buffer the movement of the cylinder liner 10, so as to reduce noise and vibration generated by the movement of the cylinder liner 10.

In particular to the embodiment of fig. 1, the second buffering portions 45 comprise four, four second buffering portions 45 being arranged at intervals around the circumference of the cylinder liner 10, and when the cylinder liner 10 moves in the first direction X to a near-limit position, the cylinder liner 10 will be in contact with two second buffering portions 45 located on the same side to buffer and limit the movement of the cylinder liner 10 by the two second buffering portions 45.

The application also provides a household appliance, which comprises the compressor in any embodiment, wherein the compressor is movably arranged on a machine body structure in a first direction X through the cylinder sleeve 10, so that the cylinder sleeve 10 has a certain movement range, when one end of the piston 20 moves eccentrically, the piston head 21 of the piston 20 drives the other end of the piston 20 to reciprocate in the cylinder sleeve 10, and the thrust generated by the piston head 21 of the piston 20 to the cylinder sleeve 10 can cause the piston 20 to reciprocate in the first direction X on the machine body structure, thereby relieving uneven stress between the piston 20 and the cylinder sleeve 10, reducing noise and vibration generated in the working process of the household appliance, and improving the experience of users.

Optionally, above-mentioned domestic appliance is the oxygenerator, and the oxygenerator reduces noise and the vibration that produces in the oxygenerator process through above-mentioned compressor, has improved the use experience of oxygenerator to and improved the life of oxygenerator. The electric device may be a household electric device having a compressor, such as a refrigerator or an air conditioner, or a commercial electric device, and is not limited thereto.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (14)

1. A compressor, the compressor comprising:

a machine body structure;

a cylinder liner (10) movably mounted on the machine body structure along a first direction (X);

one end of the piston (20) is positioned in the cylinder sleeve (10), and the other end of the piston is movably arranged on the machine body structure and can perform eccentric motion around an eccentric axis in a controlled manner;

the first direction (X), the axial direction of the cylinder sleeve (10) and the eccentric axial direction are coplanar in pairs and do not intersect.

2. The compressor of claim 1, wherein the engine body structure comprises a cylinder cover assembly (30) and a base assembly (40), one end of the piston (20) away from the cylinder sleeve (10) is movably mounted on the base assembly (40), the cylinder cover assembly (30) is connected with the base assembly (40), and both ends of the cylinder sleeve (10) in the axial direction are movably mounted on the cylinder cover assembly (30) and the base assembly (40) along the first direction (X).

3. Compressor according to claim 2, characterized in that the cylinder head assembly (30) is provided with a first guiding portion (31), the piston (20) is provided with a first limiting portion (11), the first limiting portion (11) can cooperate with the first guiding portion (31) and limit the movement range of the cylinder liner (10) in the first direction (X).

4. A compressor according to claim 3, wherein the cylinder head assembly (30) comprises a valve plate (32), the valve plate (32) is mounted at one end of the cylinder sleeve (10) far away from the base assembly (40), and the valve plate (32) is provided with a first guide part (31).

5. The compressor as claimed in claim 4, wherein the first guiding portion (31) is a limiting groove (34) formed in an inner wall of the valve plate (32), the limiting groove (34) extends lengthwise along a first direction (X), the first limiting portion (11) is a limiting block (13) protruding from a circumferential side wall of the cylinder liner (10), and the limiting block (13) extends into the limiting groove (34).

6. The compressor according to claim 5, wherein the limit grooves (34) comprise two, and the two limit grooves (34) are symmetrically arranged at both sides of the valve plate (32) in the direction of the eccentric axis;

The limiting blocks (13) comprise two limiting blocks (13), the two limiting blocks (13) are symmetrically arranged on two sides of the cylinder sleeve (10) in the direction of the eccentric axis, and the limiting blocks extend into one limiting groove (34) respectively.

7. The compressor of claim 4, wherein the cylinder head assembly (30) further comprises a sealing member (35), the sealing member (35) is arranged between the valve plate (32) and the cylinder sleeve (10) in a sealing manner, two first buffer parts (36) are arranged on the sealing member (35), the two first buffer parts (36) are arranged on two sides of the cylinder sleeve (10) at intervals along a first direction (X), and each buffer part is located on a movement path of the cylinder sleeve (10) in the first direction (X).

8. Compressor according to claim 2, wherein the base assembly (40) is provided with a second guiding portion (41), the piston (20) is provided with a second limiting portion (12), and the second limiting portion (12) can cooperate with the second guiding portion (41) and limit the movement range of the cylinder liner (10) in the first direction (X).

9. The compressor of claim 8, wherein the base assembly (40) includes a base body (42), an end of the cylinder liner (10) away from the cylinder head assembly (30) is mounted on the base body (42), the piston (20) is movably mounted on the base body (42), and the second guide portion (41) is provided on the base body (42).

10. The compressor as claimed in claim 9, wherein the second guiding portion (41) is a bar-shaped hole (43) formed in the base body (42), the bar-shaped hole (43) extends lengthwise along the first direction (X), the second limiting portion (12) is a limiting post (14) mounted on the cylinder liner (10), and the limiting post (14) extends into the bar-shaped hole (43).

11. The compressor according to claim 10, wherein a plurality of the stopper posts (14) are provided on a side end surface of the cylinder liner (10) facing the base body (42), the plurality of stopper posts (14) being disposed at intervals around an axis of the cylinder liner (10);

A plurality of strip-shaped holes (43) are formed in the base body (42), and when the cylinder sleeve (10) is installed on the base body (42), each limiting column (14) penetrates through one of the strip-shaped holes (43).

12. The compressor of claim 10, wherein the base assembly (40) further comprises a bottom pad (44), the bottom pad (44) is installed between the cylinder sleeve (10) and the base body (42), the bottom pad (44) is provided with a avoiding hole (46), and the limiting post (14) is arranged through the avoiding hole (46).

13. The compressor of claim 12, wherein a plurality of second buffer portions (45) are further provided on the base pad (44), the plurality of second buffer portions (45) are disposed at intervals around the circumference of the cylinder liner (10), and each second buffer portion (45) is located on a movement path of the cylinder liner (10) in the first direction (X).

14. An electrical apparatus comprising a compressor as claimed in any one of claims 1 to 13.