CN111720320B

CN111720320B - Refrigerating device

Info

Publication number: CN111720320B
Application number: CN202010606131.XA
Authority: CN
Inventors: 谭琴; 罗承卓
Original assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2022-03-01
Anticipated expiration: 2040-06-29
Also published as: CN111720320A

Abstract

The invention discloses a refrigerating device. The refrigerating apparatus includes: the air cylinder is internally provided with a cylinder chamber and a slide sheet groove; an exhaust port in communication with the cylinder chamber; a piston; a crankshaft for driving the piston to eccentrically rotate within the cylinder chamber; an upper bearing and a lower bearing that rotatably support the crankshaft; the sliding sheet is arranged in the sliding sheet groove and can move back and forth between an inner limit position and an outer limit position; the exhaust valve plate is used for opening and closing the exhaust hole; and the transmission component is driven when the slide sheet moves outwards, so that the transmission component pushes the exhaust valve sheet to close the exhaust hole, and the exhaust valve sheet does not have elastic restoring force for closing the exhaust hole. According to the compression mechanism provided by the invention, the applicability and the reliability of the exhaust valve plate are good, the closing noise is low, and the energy efficiency is high.

Description

Refrigerating device

Technical Field

The invention relates to the technical field of compressors, in particular to a refrigerating device with a compression mechanism.

Background

The exhaust valve plate is an important part of the rotary compressor, and influences the energy efficiency, power consumption, noise and the like of the compressor. Various improvements to the structure and material of the exhaust valve sheet itself have been proposed in the related art, but these improvements have respective problems, and thus there is a need for improvement.

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

in the related art, the discharge valve plate of the rotary compressor is usually a reed valve plate having a certain elasticity, i.e., a certain rigidity, one end of the discharge valve plate is fixed, and the other end is free, and the discharge valve plate opens the discharge hole under the action of compressing other thrust forces and closes the discharge hole by its own elastic restoring force.

The inventor finds and realizes through research that since one end of the exhaust valve sheet is fixed and the other end is free to close the exhaust hole by its own elastic restoring force, the greater the rigidity of the exhaust valve sheet, the better the closure timeliness of the exhaust valve, the higher the reliability, the lower the noise impacting the valve seat. However, the larger the rigidity of the exhaust valve plate is, the slower the opening is, the smaller the opening amplitude is, the smaller the exhaust flow area is, the larger the exhaust resistance loss is, the larger the power consumption of the compressor is, and thus the rigidity design of the exhaust valve plate is difficult, the design flexibility is limited, and the applicability and reliability of the exhaust valve plate are poor.

Disclosure of Invention

In the related art, the rigidity of the exhaust valve plate is usually designed according to the gas thrust force applied to the exhaust valve plate, but the exhaust valve plate designed in the way cannot adapt to different compressors and different working conditions of the compressors. For example, for a variable frequency compressor, the rotating speed of the variable frequency compressor is variable, when the compressor runs at a high speed, more gas is discharged in unit time, the acting force of the gas on the exhaust valve plate is larger, and in order to ensure that the exhaust valve plate is closed in time, avoid backflow to influence energy efficiency and reduce noise, the exhaust valve plate needs to be designed to have larger rigidity; when the compressor runs at a low speed, the gas acting force on the exhaust valve plate is small, the exhaust valve plate with high rigidity cannot ensure the full opening of the exhaust valve plate, so that the flutter is easy to occur, the exhaust resistance loss is large, and the noise problem caused by the airflow pulsation is easy to cause. Therefore, when the compressor is operated at a variable speed, the discharge valve sheet is generally designed to have a large rigidity in order to ensure reliability of the discharge valve sheet, but this inevitably results in an influence on the energy efficiency of the compressor at a low speed.

Therefore, the inventor realizes that the rigidity design problem of the exhaust valve sheet cannot be solved only by improving the structure and the material of the exhaust valve sheet, which results in the problem of poor applicability and reliability of the exhaust valve sheet.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides a compression mechanism, and the exhaust valve plate of the compression mechanism is good in closing timeliness, applicability and reliability, low in noise and high in energy efficiency.

The embodiment of the invention also provides a rotary compressor comprising the compression mechanism.

The embodiment of the invention also provides a refrigerating device comprising the compressor.

The compression mechanism comprises a cylinder, wherein a cylinder chamber and a slide sheet groove are arranged in the cylinder; an exhaust port in communication with the cylinder chamber; a piston; a crankshaft for driving the piston to eccentrically rotate within the cylinder chamber; an upper bearing and a lower bearing that rotatably support the crankshaft; the sliding sheet is arranged in the sliding sheet groove and can move back and forth between an inner limit position and an outer limit position, and the inner end of the sliding sheet is abutted against the piston; the exhaust valve plate is used for opening and closing the exhaust hole; and the transmission component is driven when the slide sheet moves outwards, so that the transmission component pushes the exhaust valve sheet to close the exhaust hole, and the exhaust valve sheet does not have elastic restoring force for closing the exhaust hole.

According to the compression mechanism provided by the embodiment of the invention, when the slide plate moves from the inner limit position to the outer limit position, namely the slide plate moves along the center far away from the cylinder chamber, the transmission part applies closing force for closing the exhaust hole to the exhaust valve plate, namely the exhaust valve plate is driven to close the exhaust hole, the exhaust valve plate drives the exhaust hole to be closed by virtue of the driving force of the transmission part, so that the timeliness and the reliability of closing the exhaust valve plate can be improved, the exhaust valve plate has no rigidity, the exhaust valve plate can be quickly opened even if the compression mechanism is at an ultralow rotation speed, and compared with the traditional reed valve plate, the compression mechanism has a larger opening degree and higher energy efficiency.

In some embodiments, the vent flap is a disc.

In some embodiments, the compression mechanism further comprises a valve plate restraining member that restrains radial movement of the discharge valve plate and allows the discharge valve plate to translate in an axial direction of the discharge hole to open and close the discharge hole.

In some embodiments, the compression mechanism further comprises a lift limiter for limiting the lift of the exhaust valve flap.

In some embodiments, the lift limiter has a limiting surface facing the exhaust hole, the limiting surface being orthogonal to an axis of the exhaust hole.

In some embodiments, the valve plate restraining member includes a plurality of guide posts provided on the lift limiter and extending from the lift limiter toward the exhaust hole.

In some embodiments, the guide posts are integral with the lift limiter, and a plurality of guide posts are evenly spaced along a circumference of the exhaust hole.

In some embodiments, the exhaust hole is provided on the upper bearing, a first end of the lift stopper is fixed on the upper bearing, and the guide post is formed at the other end of the lift stopper.

In some embodiments, a receiving groove is formed on the upper surface of the upper bearing, and the discharge valve plate is installed in the receiving groove.

In some embodiments, the exhaust valve plate is a steel plate, and the thickness of the exhaust valve plate is t, wherein t is more than or equal to 0.15 mm and less than or equal to 0.35 mm.

In some embodiments, the vent plate is a plastic sheet, and the thickness of the vent plate is t, wherein t is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

In some embodiments, the transmission member contacts the vent valve plate when the slide is at the inner limit position or contacts the vent valve plate after the slide moves outward from the inner limit position by a predetermined distance to drive the vent valve plate to close the vent hole.

In some embodiments, the exhaust hole is a plurality of exhaust holes, and the transmission component is arranged corresponding to at least one exhaust hole.

In some embodiments, the transmission component is a swing rod, and the swing rod is driven to swing around a pivot when the slide sheet moves outwards, so that the swing rod drives the exhaust valve sheet to close the exhaust hole.

In some embodiments, the transmission component includes a main translational part and an auxiliary translational part, the slide plate drives the main translational part to translate when moving outwards, and the main translational part drives the auxiliary translational part to translate so that the auxiliary translational part drives the exhaust valve plate to close the exhaust hole.

In some embodiments, the primary translational member is provided with a guide surface for driving the secondary translational member, and the guide surface is a slope or an arc surface.

The rotary compressor according to the embodiment of the present invention includes the compression mechanism of the above-described embodiment.

In some embodiments, the rotary compressor is a multi-cylinder compressor.

The refrigeration device according to the embodiment of the invention comprises the rotary compressor of the above embodiment.

Drawings

Fig. 1 is a sectional view of a compressor according to an embodiment of the present invention.

Fig. 2 is an exploded view of a compression mechanism according to an embodiment of the present invention.

Fig. 3 is a plan view of a compression mechanism according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along B-B in fig. 3.

Fig. 5 is a sectional view taken along C-C in fig. 3.

Fig. 6 is a schematic structural view of a transmission member according to an embodiment of the present invention.

FIG. 7A is a schematic diagram of a lift stop for a compression mechanism according to an embodiment of the present invention.

Fig. 7B is a sectional view of a lift stopper of a compression mechanism according to an embodiment of the present invention.

FIG. 7C is a plan view of a lift stop of a compression mechanism according to an embodiment of the present invention.

Fig. 8A is a plan view of a discharge valve sheet of a compression mechanism according to an embodiment of the present invention.

Fig. 8B is a sectional view taken along E-E in fig. 8A.

Fig. 9 is a state diagram in which the transmission member of the compression mechanism does not contact the discharge valve sheet according to the embodiment of the present invention.

Fig. 10 is a view showing a state where a transmission member of the compression mechanism contacts the discharge valve sheet according to the embodiment of the present invention.

Fig. 11 is a schematic diagram of the compression mechanism according to the embodiment of the present invention, in which the crank angle is 0 ° or 360 °.

Fig. 12 is a schematic view of a compression mechanism according to an embodiment of the present invention having a crank angle of 180 °.

Fig. 13 is an exploded view of a compression mechanism according to another embodiment of the present invention.

Fig. 14 is a schematic top view of a compression mechanism according to another embodiment of the invention.

Fig. 15 is a sectional view taken along D-D in fig. 14.

Fig. 16 is a view showing a state in which a discharge valve sheet is not driven to close a discharge hole by a transmission member of a compression mechanism according to another embodiment of the present invention.

Fig. 17 is a view showing a state in which a discharge valve sheet is driven to close a discharge hole by a driving part of a compression mechanism according to another embodiment of the present invention.

Fig. 18 is a schematic cross-sectional view of the primary translation of the transmission component of the compression mechanism according to another embodiment of the present invention.

Reference numerals:

100. a housing;

200. a motor;

300. a compression mechanism;

1. a cylinder; 101. a cylinder chamber; 102. a slide groove;

2. an exhaust hole;

3. a piston;

4. a crankshaft; 401. an eccentric portion;

5. an upper bearing; 501. accommodating grooves;

6. a lower bearing;

7. sliding blades;

8. an exhaust valve plate;

9. a lift limiter; 901. avoiding holes; 902. a limiting surface; 903. mounting holes; 904. a guide post; 9041. a guiding zone;

10. a swing rod; 1001. a rod body; 1002. a slider contact portion; 1003. a valve sheet contact portion; 1004. a pivot hole;

11. a pivot;

12. a translation component; 1201. a primary translational member; 12011. a first vertical section; 12012. a first horizontal segment; 12013. a second vertical section; 12014. a second horizontal segment; 12015. an inclined section; 12016. a guide surface; 1202. and an auxiliary translation member.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A compression mechanism 300 and a rotary compressor according to an embodiment of the present invention will be described with reference to fig. 1 to 18.

As shown in fig. 1, the rotary compressor according to the embodiment of the present invention includes a casing 100, a motor 200 and a compression mechanism 300, the motor 200 and the compression mechanism 300 being installed in the casing 100, the motor 200 being used to drive the compression mechanism 300.

A compression mechanism 300 of a rotary compressor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 18, a compression mechanism 300 according to an embodiment of the present invention includes a cylinder 1, an exhaust hole 2, a piston 3, a crankshaft 4, an upper bearing 5, a lower bearing 6, a vane 7, an exhaust valve plate 8, and a transmission member.

The cylinder 1 has a cylinder chamber 101 and a vane groove 102 therein. The exhaust hole 2 communicates with the cylinder chamber 101, an eccentric portion 401 is provided at one end of the crankshaft 4, and the piston 3 is attached to the eccentric portion 401. The crankshaft 4 is rotatably supported by an upper bearing 5 and a lower bearing 6, and the crankshaft 4 drives the piston 3 to eccentrically rotate in the cylinder chamber 101, thereby performing compression. The slide plate 7 is movable in a reciprocating manner in the slide plate groove 102, the inner end of the slide plate 7 abuts against the piston 3, the slide plate 7 partitions the cylinder chamber 101 into an intake chamber and an exhaust chamber as the piston 3 eccentrically rotates in the cylinder chamber 101, and the exhaust hole 2 communicates with the exhaust chamber. The vane 7 has an inner limit position and an outer limit position in the vane groove 102, and the vane 7 reciprocates between the inner limit position and the outer limit position in the vane groove 102 as the piston 3 eccentrically rotates in the cylinder chamber 101.

In the present invention, the meaning of "the discharge valve sheet 8 does not have an elastic restoring force for closing the discharge hole 2" means that the discharge valve sheet 8 does not close the discharge hole 2 by the elastic force generated by its deformation, but closes the discharge hole 2 only by the pushing of the transmission member, in other words, unlike the reed of the prior art in which one end is fixed and the other end is free, in the present invention, the movement of the discharge valve sheet 8 in the axial direction of the discharge hole 2 is not restricted, and thus, the discharge valve sheet 8 "floats" above the discharge hole 2 during discharge, and therefore, the discharge valve sheet 8 in the present invention can also be referred to as a "non-rigid" discharge valve sheet 8, and thus, the rigidity of the discharge valve sheet 8 does not need to be considered during design. That is, in the present invention, the discharge valve sheet 8 is not fixed to other members. However, it should be understood that, although the movement of the exhaust valve sheet 8 in the axial direction of the exhaust hole 2 is not constrained and can move freely, the lift of the exhaust valve sheet 8 (i.e. the distance from the exhaust hole 2) can be limited, and the movement of the exhaust valve sheet 8 in the radial direction of the exhaust hole 2 can be limited, so that, it can also be said that the exhaust valve sheet 8 can move freely and unconstrained within a certain distance range from the exhaust hole 2 in the axial direction of the exhaust hole 2, and thus the exhaust valve sheet 8 has no rigidity.

In the embodiment of the present invention, for convenience of description, the term "inner" refers to a direction toward the center of the cylinder chamber 101 in the radial direction of the cylinder chamber 101, and "outer" refers to a direction away from the center of the cylinder chamber 101 in the radial direction of the cylinder chamber 101.

Correspondingly, the end of the sliding sheet 7 close to the piston 3 is the inner end of the sliding sheet 7, the end of the sliding sheet 7 far away from the piston 3 is the outer end of the sliding sheet 7, and the sliding sheet 7 moves outwards, namely the sliding sheet 7 moves from the inner limit position to the outer limit position. For example, in fig. 4, the inward movement of the slider 7 is the leftward movement of the slider 7, and the outward movement of the slider 7 is the rightward movement of the slider 7.

The inner limit position is a position of the vane 7 when the inner end of the vane 7 is closest to the center of the cylinder chamber 101, that is, a position of the vane 7 when the crank angle is 180 degrees, as shown in fig. 12. The outer limit position is a position of the vane 7 when the inner end of the vane 7 is farthest from the center of the cylinder chamber 101, that is, a position of the vane 7 when the crank angle is 0 or 360 degrees, which is a rotation angle of the compressor, as shown in fig. 11.

The discharge valve sheet 8 is used to open and close the discharge hole 2. The transmission component is used for driving the exhaust valve plate 8 to close the exhaust hole 2 when the sliding sheet 7 moves outwards. In other words, the transmission member is linked with the sliding piece 7, and when the sliding piece 7 moves from the inner limit position to the outer limit position, the transmission member drives the exhaust valve piece 8 to close the exhaust hole 2.

As shown in fig. 1 to 5, when the compression mechanism 300 operates, the piston 3 eccentrically rotates in the cylinder chamber 101, the gas in the cylinder chamber 101 is compressed into high-pressure gas, when the pressure reaches a certain value, the gas pushes the exhaust valve plate 8 open and is exhausted from the exhaust hole 2, the piston 3 pushes the slide plate 7 to move from the inner limit position to the outer limit position, and the transmission part applies a closing force for closing the exhaust hole 2 to the exhaust valve plate 8 to drive the exhaust valve plate 8 to close the exhaust hole 2. Because the exhaust valve plate 8 is pushed by the transmission part to close the exhaust hole 2, the timeliness and the reliability are improved when the exhaust valve plate 8 is closed. Moreover, due to the assistance of the transmission part, the closing timeliness and reliability of the exhaust valve plate 8 can be improved, the exhaust valve plate 8 has no rigidity, the exhaust valve plate 8 can be quickly opened even if the compression mechanism 300 is at an ultralow rotating speed, and compared with the traditional reed valve plate, the exhaust valve plate has a larger opening degree and higher energy efficiency.

The inventor finds that the traditional exhaust valve plate 8 is a reed valve plate with one fixed end and one free end, and the traditional exhaust valve plate has certain rigidity, and the rigidity of the reed valve plate is determined by the thickness, the width and the length of the reed valve plate. The thinner the reed valve plate, the narrower the width, and the longer the length, the smaller the rigidity. The thinner the reed valve plate is, the easier the reed valve plate is to bend and deform, and the effect of sealing the exhaust hole 2 is poor; the narrower the reed valve plate is, the more easily the reed valve plate tilts and moves, and the edge of the reed valve plate is easy to fatigue and damage; the longer the reed valve plate, the higher the requirement for installation space. The stiffness of the reed valve is hard to be lowered to a certain degree. The exhaust valve plate 8 is designed to be the exhaust valve plate 8 without rigidity, so that the exhaust valve plate 8 can be quickly opened even at an ultra-low rotating speed, such as 0.1 Hz, and has a larger opening degree.

In some embodiments, the compression mechanism 300 further includes a valve plate restricting member that restricts the radial movement of the discharge valve plate 8 and allows the discharge valve plate 8 to translate in the axial direction of the discharge hole 2 to open and close the discharge hole 2. In other words, the valve sheet restriction member restricts the movement of the discharge valve sheet 8 in the horizontal direction, and the discharge valve sheet 8 can only be translated up and down in the axial direction of the discharge hole 2 to open and close the discharge hole 2. Further, the vent valve sheet 8 is a sheet structure, when the vent valve sheet 8 is closed on the vent hole 2, the vent valve sheet 8 can limit the overflow of the gas in the vent hole 2, and preferably, the vent valve sheet 8 is a circular sheet.

In some embodiments, the compression mechanism 300 further includes a lift limiter 9, the lift limiter 9 is used for limiting the lift of the exhaust valve plate 8, the lift limiter 9 is provided with an avoiding hole 901 for avoiding a transmission component, and the transmission component can pass through the avoiding hole 901 to contact with the exhaust valve plate 8 to drive the exhaust valve plate 8 to close the exhaust hole 2. It is understood that the relief hole 901 may be a circumferentially open hole, as shown in fig. 7, or a closed hole, as shown in fig. 13. The specific form of the avoiding hole 901 may be designed according to the specific form of the transmission component, so as to avoid interference with the transmission component.

In some embodiments, the lift stopper 9 has a stopper surface 902 facing the exhaust hole 2, and when the exhaust hole 2 exhausts air and lifts up the exhaust valve sheet 8, the exhaust valve sheet 8 contacts the stopper surface 902 to limit the lift of the exhaust valve sheet 8. Further, the limiting surface 902 is orthogonal to the axis of the exhaust hole 2, in other words, the limiting surface 902 is parallel to the surface of the exhaust valve plate 8. When the exhaust hole 2 exhausts air and jacks up the exhaust valve plate 8, the exhaust valve plate 8 is attached to the limiting surface 902, so that the phenomenon that the exhaust valve plate 8 inclines and turns on one side when the exhaust hole 2 is opened and closed is avoided, and the running reliability of the exhaust valve plate 8 is improved.

In some embodiments, the valve plate constraining member may be a guide platform, the guide platform is disposed on the lift limiter 9 and extends from the lift limiter 9 towards the exhaust hole 2, and the guide platform encloses a guide area 9041 for the exhaust valve plate 8 to translate only along the axial direction of the exhaust hole 2. Optionally, the valve plate restricting component is a plurality of guide posts 904, and the plurality of guide posts 904 are arranged on the lift limiter 9 and extend from the lift limiter 9 towards the exhaust hole 2; specifically, the plurality of guide posts 904 are evenly spaced around the circumference of the exhaust hole 2; the discharge valve sheet 8 is installed in a guide area 9041 surrounded by the plurality of guide pillars 904 such that the discharge valve sheet 8 can reciprocate only in the length direction of the guide pillars 904, i.e., the axial direction of the discharge hole 2, to open and close the discharge hole 2. Preferably, the guide posts 904 are integrally formed with the lift stopper 9 to improve the assembly efficiency of the compression mechanism 300.

In some embodiments, the exhaust hole 2 is disposed on the upper bearing 5, the upper surface of the upper bearing 5 is provided with a receiving groove 501, a first end of the lift stopper 9 is fixed at the bottom of the receiving groove 501, and the guide post 904 is formed at a second end of the lift stopper 9, that is, an end of the lift stopper 9 close to the exhaust hole 2; accordingly, the discharge valve sheet 8 is installed in the guide area 9041 surrounded by the plurality of guide pillars 904, so that the discharge valve sheet 8 can reciprocate only in the length direction of the guide pillars 904, i.e., the axial direction of the discharge hole 2, to open and close the discharge hole 2.

In some embodiments, the exhaust valve plate 8 is a steel plate, and in order to avoid the phenomenon that the exhaust valve plate 8 is seriously concave when the exhaust valve plate 8 closes the exhaust hole 2, the thickness of the exhaust valve plate 8 is t, and t is less than or equal to 0.15 mm; in order to ensure that the exhaust valve plate 8 is quickly opened and has small mass, t is less than or equal to 0.35 mm.

In other embodiments, the air vent flap 8 is a plastic sheet, and optionally, the air vent flap 8 is a polyetheretherketone material; in order to avoid the phenomenon that the exhaust valve plate 8 is seriously concave when the exhaust valve plate 8 closes the exhaust hole 2, the thickness of the exhaust valve plate 8 is t, and t is less than or equal to 0.5 mm; in order to ensure that the exhaust valve plate 8 is quickly opened and has small mass, t is less than or equal to 0.15 mm.

In the embodiment of the present invention, the transmission member drives the discharge valve plate 8 to close the discharge hole 2 when the sliding plate 7 moves outward, which should be broadly understood as follows.

In some embodiments, the transmission part contacts the discharge valve plate 8 to drive the discharge valve plate 8 to close the discharge hole 2 after the sliding plate 7 moves outwards from the inner limit position by a predetermined distance. In other words, before the sliding piece 7 moves from the inner limit position to the outer limit position by the predetermined distance, the transmission part moves towards the exhaust valve sheet 8, but does not contact with the exhaust valve sheet 8, and does not drive the exhaust valve sheet 8, and after the sliding piece 7 moves by the predetermined distance, the transmission part contacts with the exhaust valve sheet 8 and drives the exhaust valve sheet 8 to move towards the exhaust hole 2 to close the exhaust hole 2.

In other embodiments, the transmission member is in contact with the discharge valve plate 8 when the slide 7 is in the inner limit position. In other words, when the sliding vane 7 is at the inner limit position, the transmission part is in contact with the exhaust valve sheet 8, and in the process that the sliding vane 7 moves from the inner limit position to the outer limit position, the transmission part drives the exhaust valve sheet 8 to move towards the exhaust hole 2 so as to gradually close the exhaust hole 2. Because when the gleitbretter 7 outwards moved, transmission unit contacts with discharge valve piece 8 all the time, can slow down the instantaneous speed that discharge valve piece 8 closed exhaust hole 2, reduces the noise that the discharge valve piece 8 struck the disk seat and produced when closing exhaust hole 2.

In some embodiments, the upper bearing 5 is located at an upper end provided above the cylinder 1 to close the cylinder chamber 101, the lower bearing 6 is located at a lower end provided below the cylinder 1 to close the cylinder chamber 101, and the exhaust hole 2 is formed on at least one of the upper bearing 5 and the lower bearing 6. As shown in fig. 2 and 4 to 5, the discharge hole 2 is formed on the upper bearing 5, i.e., the discharge hole 2 penetrates the upper bearing 5 and communicates with the cylinder chamber 101. It is understood that the exhaust holes 2 may be formed on the lower bearing 6, or both the upper bearing 5 and the lower bearing 6. It will be appreciated that the discharge holes 2 may be formed at other positions, for example, in the embodiment of the multi-cylinder compressor, the discharge holes 2 may be formed on the partition plate between the adjacent cylinders 1.

In some embodiments, the number of the exhaust holes 2 may be one or more, and the transmission component is disposed corresponding to at least one exhaust hole 2, that is, the exhaust valve sheet 8 for opening and closing at least one exhaust hole 2 is driven by the transmission component. Preferably, the transmission parts are provided in one-to-one correspondence with the exhaust holes 2.

In some embodiments, as shown in fig. 9 and 10, the transmission member is a swinging member, in particular, the transmission member is a swinging rod 10, and the swinging rod 10 is swingable about a pivot 11 mounted on the upper bearing 5. When the slide sheet 7 moves outwards, the swing rod 10 is driven to swing around the pivot 11, for example, in fig. 9 and 10, the swing rod 10 swings anticlockwise, so as to drive the exhaust valve sheet 8 to close the exhaust hole 2 downwards.

As shown in fig. 2, fig. 4-6 and fig. 9-10, the swing link 10 includes a lever 1001, a slide contact 1002 and a valve plate contact 1003. The pivot 11 is pivotally supported at the middle of the lever 1001, and the vane contact portion 1002 and the valve sheet contact portion 1003 are respectively located at both ends of the lever 1001. For example, the valve plate contact portion 1003 is disposed at a first end (right end in fig. 6) of the rod 1001, that is, an end of the rod 1001 close to the exhaust valve plate 8 when the exhaust valve plate 8 is closed, and the slide plate contact portion 1002 is disposed at a second end (left end in fig. 6) of the rod 1001, that is, an end of the rod 1001 close to an outer end of the slide plate 7 when the exhaust valve plate 8 is closed. When the sliding sheet 7 moves outward, the outer end of the sliding sheet 7 drives the sliding sheet contact portion 1002, so that the rod 1001 swings counterclockwise around the pivot 11, the valve sheet contact portion 1003 moves toward the exhaust hole 2, and the exhaust valve sheet 8 is pushed to close the exhaust hole 2.

As described above, the valve sheet contact part 1003 may contact the exhaust valve sheet 8 after the sliding sheet 7 moves backward from the inner limit position by a predetermined distance, that is, after the rod 1001 swings counterclockwise by a predetermined angle, the valve sheet contact part 1003 contacts the exhaust valve sheet 8, and as the sliding sheet 7 continues to move outward, the rod 1001 continues to swing counterclockwise, and the valve sheet contact part 1003 drives the exhaust valve sheet 8 to move downward to close the exhaust hole 2. Alternatively, when the slide plate 7 is at the inner limit position, the valve plate contact portion 1003 is in contact with the vent valve plate 8, and when the slide plate 7 moves outward from the inner limit position, the valve plate contact portion 1003 pushes the vent valve plate 8 to gradually move downward to gradually close the vent hole 2.

In some embodiments, as shown in fig. 6 and 9 to 10, the valve sheet contact part 1003 extends from the rod 1001 toward a side of the discharge hole 2. Preferably, the valve sheet contact 1003 is perpendicular to the lever 1001, the vane contact 1002 and the valve sheet contact 1003 are integrated with the lever 1001, and the valve sheet contact 1003 may be fixed to the lever 1001 by welding, screwing, or the like. In the embodiment shown in FIGS. 9 and 10, slider contact 1002 is formed by the second end of rod 1001 or a portion thereof.

In some embodiments, the slider contact 1002 is in constant contact with the slider 7, e.g., the outer end of the slider 7. In other words, when the slide 7 reciprocates between the inner limit position and the outer limit position, the slide contact portion 1002 is always in contact with and does not separate from the outer end of the slide 7. In some specific examples, the sliding piece contact portion 1002 can be always abutted to the outer end of the sliding piece 7 by an elastic member, for example, a compression spring or a leaf spring is disposed between the swing rod 10 and the upper bearing 5, or a torsion spring is disposed on the pivot 11, so that the sliding piece 7 is prevented from being collided with the sliding piece contact portion 1002 during movement, noise generated during operation of the compression mechanism 300 is reduced, and the service life of the transmission component and the swing rod 10 is prolonged.

In some embodiments, as shown in fig. 7 and 9-10, the lift limiter 9 is disposed above the exhaust valve plate 8. When the valve sheet contact portion 1003 moves downward, the valve sheet contact portion 1003 passes through the avoiding hole 901 to contact the exhaust valve sheet 8, so that the swing link 10 does not interfere with the lift stopper 9, and in this embodiment, the avoiding hole 901 is a hole with a circumferential opening.

In some embodiments, as shown in FIGS. 3 to 5, it is preferable that, in order to make the swing link 10 move smoothly, the degrees of freedom of the swing link 10 in other directions are restricted except for the degree of freedom of swing, and the restriction gap is ≦ 0.05 mm. For example, to limit the displacement of the rocker 10 in the axial direction of the pivot 11, the rocker 10 is supported by the pivot 11 to swing in a groove formed in the upper bearing 5, the groove width is b, and the transmission member width b1 satisfies the relation: b-b1 is more than 0 and less than or equal to 0.05 mm. To limit the displacement of the rocker 10 in the radial direction of the pivot 11, the diameter d2 of the pivot 11 hole 1004 on the upper bearing 5, the diameter d1 of the pivot 11 hole 1004 of the transmission component and the diameter d of the pivot 11 satisfy the following relation: d1-d is less than or equal to 0.05 mm and d2-d is less than or equal to 0.05 mm, so that the running stability of the compression mechanism 300 is improved.

In other embodiments, as shown in fig. 13 to 17, the transmission member is a translation member 12. The transmission component comprises a main translational member 1201 and an auxiliary translational member 1202, when the slide sheet 7 moves outwards, the main translational member 1201 is driven to translate, for example, to translate leftwards in fig. 15-17, and the main translational member 1201 drives the auxiliary translational member 1202 to translate, for example, to translate downwards in fig. 15-17, so as to drive the exhaust valve sheet 8 to close the exhaust hole 2.

Specifically, as shown in fig. 18, the main translational member 1201 includes a first vertical segment 12011, a first horizontal segment 12012, a second vertical segment 12013, a second horizontal segment 12014, and an inclined segment 12015, wherein an upper end of the first vertical segment 12011 is connected to a right end of the first horizontal segment 12012, and preferably has an arc transition, a lower end of the second vertical segment 12013 is connected to a left end of the first horizontal segment 12012, a right end of the second horizontal segment 12014 is connected to an upper end of the second vertical segment 12013, and the inclined segment 12015 is connected to a left end of the second horizontal segment 12014, it should be understood that the inclined segment 12015 may be inclined or curved. The lower surface of the inclined section 12015 forms a guide surface 12016, and the guide surface 12016 may be a shoe upper or a curved surface. The end of the primary translational member 1201 remote from the secondary translational member 1202 is connected to the outer end face of the sliding piece 7, and as shown in fig. 15-17, the first vertical section 12011 is connected to the outer end face of the sliding piece 7. In some embodiments, secondary translational member 1202 is cylindrical and has a hemispherical upper end.

When the sliding sheet 7 moves outwards, the main translational member 1201 is driven to translate outwards (rightwards in fig. 15-17), and the guide surface 12016 of the main translational member 1201 is in contact with the secondary translational member 1202 to drive the secondary translational member 1202 to move downwards, so that the exhaust valve sheet 8 is driven to close the exhaust hole 2. When the sliding sheet 7 moves outwards, the outer end of the sliding sheet 7 pushes the main translation member 1201 to translate rightwards, and under the guiding action of the guide surface 12016 of the main translation member 1201, the main translation member 1201 pushes the auxiliary translation member 1202 to face the exhaust hole 2

Moves (downwards in fig. 15-17) and drives the vent flap 8 to close the vent 2.

In some embodiments, the main translational member 1201 and the sliding vane 7 may be in contact with each other all the time and may not be separated from each other, thereby preventing the sliding vane 7 from colliding with the main translational member 1201 during movement, reducing noise, and prolonging the service life of the transmission component and the sliding vane 7.

In some embodiments, after the sliding plate 7 moves outward from the inner limit position for a certain distance, the secondary translational member 1202 contacts the air release flap 8, and drives the flap contact portion 1003 to close the air release flap 8.

Alternatively, when the sliding vane 7 is in the inner limit position, the secondary translational member 1202 contacts the guide surface 12016 and the discharge valve plate 8, so that when the sliding vane 7 starts to move outwards from the inner limit position, the secondary translational member 1202 immediately drives the discharge valve plate 8 to move towards the discharge hole 2 to close the discharge hole 2. Therefore, the auxiliary translation piece 1202 is always in contact with the guide surface 12016 and the exhaust valve plate 8, the instantaneous speed of the exhaust valve plate 8 for closing the exhaust hole 2 can be reduced, and the noise generated when the exhaust valve plate 8 closes the exhaust hole 2 is further reduced.

Optionally, when the slide 7 is in the inner limit position, the secondary translational member 1202 is in contact with the lower surface of the second horizontal segment 12014 of the primary translational member 1201, only after the primary translational member 1201 translates to the right by a predetermined distance, however, the secondary translational member 1202 contacts the guide surface 12016, when the sliding sheet 7 moves outwards from the inner extreme position, the main translational member 1201 is driven to move outwards, and at the moment, the upper end of the auxiliary translational member 1202 is in contact with the lower surface of the second horizontal segment 12014 of the main translational member 1201, so that the auxiliary translational member 1202 does not move downwards, after the sliding piece 7 and the main translational member 1201 move outwards for a preset distance, the upper end of the secondary translational member 1202 starts to contact with the guide surface 12016, so that the guide surface 12016 drives the secondary translational member 1202 to move downwards, in this case, the sub-translation member 1202 may contact the discharge valve sheet 8 to drive the discharge valve sheet 8 immediately when contacting the guide surface 12016, or may contact the discharge valve sheet 8 to drive the discharge valve sheet 8 after moving downward by a predetermined distance.

In some embodiments, the lift stopper 9 is disposed above the exhaust valve plate 8, the avoiding hole 901 is a circumferentially closed hole, and the secondary translational member 1202 can pass through the avoiding hole 901 to reciprocate along the axial direction of the avoiding hole 901, so that the avoiding hole 901 serves to guide the secondary translational member 1202.

In some embodiments, it is preferable that, in order to make the translational part 12 move smoothly, all spatial degrees of freedom are constrained except the translational degree of freedom of the translational part 12, and the constraint gap is less than or equal to 0.05 mm.

The following describes the compression mechanism 300 according to some specific examples of the present invention with reference to the drawings.

As shown in fig. 1 to 12, a compression mechanism 300 according to an embodiment of the present invention includes a cylinder 1, a piston 3, a crankshaft 4, an upper bearing 5, a lower bearing 6, a vane 7, an exhaust valve sheet 8, a lift stopper 9, and a rocker 10. The cylinder 1 is provided with a cylinder chamber 101, the upper bearing 5 and the lower bearing 6 are respectively arranged on the upper surface and the lower surface of the cylinder 1 to seal the cylinder chamber 101 of the cylinder 1, the piston 3 is arranged in the cylinder chamber 101, one end of the crankshaft 4 is provided with an eccentric part 401, the piston 3 is sleeved on the eccentric part 401, and the crankshaft 4 drives the piston 3 to eccentrically rotate in the cylinder chamber 101.

A slide sheet groove 102 is arranged in the cylinder 1, and the inner end of the slide sheet groove 102 is communicated with the cylinder chamber 101. The inner end of the slide 7 abuts on the piston 3, and the slide 7 is reciprocally movable between an inner limit position and an outer limit position in the slide groove 102. The upper surface of upper bearing 5 is provided with holding tank 501, and exhaust hole 2 has been seted up to the tank bottom of holding tank 501, and exhaust hole 2 communicates with jar room 101. The exhaust valve plate 8 and the lift limiter 9 are arranged in the accommodating groove 501, the lift limiter 9 is located above the exhaust valve plate 8, the exhaust valve plate 8 is the exhaust valve plate 8 without rigidity, one side, adjacent to the exhaust hole 2, of the lift limiter 9 extends downwards to form a plurality of guide columns 904, and the guide columns 904 are distributed around the circumferential direction of the exhaust hole 2 to form a guide area 9041. The exhaust valve sheet 8 is installed in the guide region 9041 such that the exhaust valve sheet 8 can only translate up and down in the axial direction of the exhaust hole 2 to open and close the exhaust hole 2. The lift limiter 9 is further provided with an avoidance hole 901 for avoiding the swing rod 10.

The pendulum rod 10 is swingable about a pivot 11 mounted on the upper bearing 5. The swing link 10 includes a link 1001, a slide contact 1002, and a valve plate contact 1003. The rod 1001, the slide contact 1002 and the valve plate contact 1003 are integrated. The pivot 11 is supported at the middle of the rod 1001, and the slide contact 1002 is disposed at an end of the rod 1001 corresponding to the slide 7, for example, formed by an end of the rod 1001 or a portion of an end of the rod 1001. The valve sheet contact portion 1003 is disposed at the other end of the rod 1001 and is substantially perpendicular to the rod 1001. The sheet contact part 1003 may be cylindrical and have a hemispherical lower end.

The swing rod 10 is linked with the sliding sheet 7, when the sliding sheet 7 moves outwards, the outer end of the sliding sheet 7 drives the sliding sheet contact part 1002, so that the rod body 1001 swings around the pivot 11, the valve sheet contact part 1003 moves towards the exhaust hole 2, and the exhaust valve sheet 8 is pushed to close the exhaust hole 2. The lower end of the slider contact 1002 may be provided with a wear resistant or resilient material layer. A torsion spring may be mounted in the pivot 11 so that the slider contact 1002 is always in contact with the slider 7.

The operation of the compression mechanism 300 according to some specific examples of the present invention is described below.

As shown in fig. 9 and 12, when the crank angle is 180 degrees, the slide plate 7 moves to the inner limit position, the exhaust valve plate 8 does not close the exhaust hole 2 and allows the exhaust through the exhaust hole 2, and the plate contact portion 1003 of the swing lever 10 does not contact the exhaust valve plate 8. When the piston 3 continues to rotate from the 180-degree rotation angle, that is, the slide plate 7 moves from the inner limit position shown in fig. 12 to the outer limit position shown in fig. 11, the slide plate 7 drives the swing rod 10 to swing counterclockwise from the position shown in fig. 9, the valve plate contact portion 1003 contacts the exhaust valve plate 8 and drives the exhaust valve plate 8 downwards to gradually close the exhaust hole 2, and finally, the slide plate 7 moves to the outer limit position shown in fig. 11, and the valve plate contact portion 1003 of the swing rod 10 drives the exhaust valve plate 8 to completely close the exhaust hole 2.

As shown in fig. 13 to 17, a compression mechanism 300 according to other specific examples of the present invention includes a cylinder 1, a piston 3, a crankshaft 4, an upper bearing 5, and a lower bearing 6. The cylinder 1 has a cylinder chamber 101 therein, the upper bearing 5 and the lower bearing 6 are respectively mounted on the upper and lower ends of the cylinder 1 to close the cylinder chamber 101 of the cylinder 1, the piston 3 is mounted inside the cylinder chamber 101, one end of the crankshaft 4 is provided with an eccentric portion 401, the piston 3 is sleeved on the eccentric portion 401, and the crankshaft 4 drives the piston 3 to eccentrically rotate in the cylinder chamber 101.

A slide groove 102 is provided in the cylinder 1, and one end of the slide groove 102 communicates with the cylinder chamber 101. The slide sheet 7 is arranged in the slide sheet groove 102, the slide sheet 7 can move back and forth between an inner limit position and an outer limit position, and the inner end of the slide sheet 7 is abutted to the piston 3. The upper surface of upper bearing 5 is provided with holding tank 501, and exhaust hole 2 has been seted up to the tank bottom of holding tank 501, and exhaust hole 2 communicates with jar room 101. An exhaust valve plate 8 and a lift limiter 9 are further arranged in the accommodating groove 501, and the lift limiter 9 is arranged above the exhaust valve plate 8.

The exhaust valve plate 8 is a non-rigid exhaust valve plate 8, one side of the lift limiter 9, which is adjacent to the exhaust hole 2, extends downwards to form a plurality of guide columns 904, and the guide columns 904 are distributed around the circumference of the exhaust hole 2 to form a guide area 9041. The exhaust valve sheet 8 is installed in the guide region 9041 such that the exhaust valve sheet 8 can only translate up and down in the axial direction of the exhaust hole 2 to open and close the exhaust hole 2. The lift limiter 9 is further provided with an avoidance hole 901.

The compression mechanism 300 further comprises a translational member 12, and the translational member 12 comprises a primary translational member 1201 and a secondary translational member 1202. The translational part 12 is linked with the slide 7. Specifically, when the slide sheet 7 moves outwards, the main translation member 1201 is driven to translate outwards, and the main translation member 1201 drives the auxiliary translation member 1202 to translate downwards so as to drive the exhaust valve sheet 8 to close the exhaust hole 2.

The operation of the compression mechanism 300 according to other specific examples of the present invention will be described below.

As shown in fig. 12 and 16, when the crank angle is 180 degrees, the slide plate 7 moves to the inner limit position, the discharge valve plate 8 does not close the discharge hole 2 and allows discharge through the discharge hole 2, and the upper end of the secondary translational member 1202 does not contact the guide surface 12016 of the primary translational member 1201. When the piston 3 continues to rotate from a 180-degree angle, that is, the slide piece 7 moves from the inner limit position shown in fig. 12 to the outer limit position shown in fig. 11, the main translational member 1201 translates from the position shown in fig. 16 to the position shown in fig. 17, the upper end of the secondary translational member 1202 contacts with the guide surface 12016, the secondary translational member 1202 is driven to translate downwards, so that the exhaust valve plate 8 is driven to gradually close the exhaust hole 2, and finally, the slide piece 7 moves to the outer limit position shown in fig. 11, and the secondary translational member 1202 drives the exhaust valve plate 8 to completely close the exhaust hole 2.

In some embodiments, the rotary compressor may be a multi-cylinder compressor, and the rotary compressor may be a fixed speed compressor or a variable speed compressor.

In some embodiments, the maximum operating speed of the rotary compressor is greater than 150 revolutions per second and less than 240 revolutions per second. According to the rotary compressor implemented by the invention, the effect is more obvious when the rotary compressor runs at a high speed, the timeliness and the reliability of closing the exhaust valve plate 8 are high, the exhaust valve plate 8 is easy to open, the exhaust resistance loss is small, and the exhaust noise is reduced.

The refrigeration device according to the embodiment of the invention comprises the rotary compressor according to the embodiment of the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A compression mechanism, comprising:

the air cylinder is internally provided with a cylinder chamber and a slide sheet groove;

an exhaust port in communication with the cylinder chamber;

a piston;

a crankshaft for driving the piston to eccentrically rotate within the cylinder chamber;

an upper bearing and a lower bearing that rotatably support the crankshaft;

the sliding sheet is arranged in the sliding sheet groove and can move back and forth between an inner limit position and an outer limit position, and the inner end of the sliding sheet is abutted against the piston;

the exhaust valve plate is used for opening and closing the exhaust hole;

and the transmission component is driven when the slide sheet moves outwards, so that the transmission component pushes the exhaust valve sheet to close the exhaust hole, wherein the exhaust valve sheet does not have elastic restoring force for closing the exhaust hole.

2. The compression mechanism of claim 1, wherein the vent flap is a disc.

3. The compression mechanism of claim 1, further comprising a valve restraint member that restrains radial movement of the discharge valve and allows the discharge valve to translate in an axial direction of the discharge orifice to open and close the discharge orifice.

4. The compression mechanism of claim 3, further comprising a lift limiter to limit lift of the exhaust valve flap.

5. The compression mechanism of claim 4, wherein the lift limiter has a limiting surface facing the exhaust hole, the limiting surface being orthogonal to an axis of the exhaust hole.

6. The compression mechanism of claim 4, wherein the valve plate restraining member includes a plurality of guide posts provided on the lift limiter and extending from the lift limiter toward the exhaust hole.

7. The compression mechanism of claim 6, wherein the guide posts are integral with the lift limiter, and a plurality of guide posts are evenly spaced along a circumference of the exhaust hole.

8. The compression mechanism as claimed in claim 7, wherein the exhaust hole is provided on the upper bearing, a first end of the lift stopper is fixed on the upper bearing, and the guide post is formed at the other end of the lift stopper.

9. The compressing mechanism as set forth in claim 8, wherein a receiving groove is formed on an upper surface of the upper bearing, and the discharge valve plate is mounted in the receiving groove.

10. The compression mechanism of claim 1, wherein the vent plate is a steel plate and has a thickness t, wherein t is 0.15 mm or less and is 0.35 mm or less.

11. The compression mechanism of claim 1, wherein the vent flap is a plastic sheet and has a thickness t, wherein t is 0.5 mm or less and 1.5 mm or less.

12. The compressing mechanism as claimed in claim 1, wherein the transmission member contacts the discharge valve plate when the slide is at the inner limit position or contacts the discharge valve plate after the slide moves outward from the inner limit position by a predetermined distance to drive the discharge valve plate to close the discharge hole.

13. The compression mechanism as claimed in claim 1, wherein the exhaust hole is plural, and the transmission member is provided corresponding to at least one exhaust hole.

14. The compressing mechanism as claimed in any one of claims 1 to 13, wherein the transmission member is a swing link, and the swing link is driven to swing around a pivot when the sliding piece moves outwards, so that the swing link drives the discharge valve plate to close the discharge hole.

15. The compression mechanism as claimed in any one of claims 1 to 13, wherein the transmission member includes a primary translational member and a secondary translational member, the slide plate is driven to translate when moving outwards, and the primary translational member drives the secondary translational member to translate so that the secondary translational member drives the discharge valve plate to close the discharge hole.

16. The compression mechanism as claimed in claim 15, wherein the primary translational member is provided with a guide surface for driving the secondary translational member, and the guide surface is a slope or an arc surface.

17. A rotary compressor characterized by comprising the compression mechanism according to any one of claims 1 to 16.

18. The rotary compressor of claim 17, wherein the rotary compressor is a multi-cylinder compressor.

19. A refrigerating device comprising the rotary compressor according to any one of claims 17 to 18.