阅读说明：本技术 压缩机构和具有它的制冷装置 (Compression mechanism and refrigerating device with same ) 是由 谭琴 江波 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种压缩机构和制冷装置。压缩机构包括气缸,气缸内具有缸室和滑片槽；与缸室连通的排气孔；活塞；用于驱动活塞在缸室内偏心旋转的曲轴；可旋转地支承曲轴的上轴承和下轴承；滑片,滑片设在滑片槽内且在内极限位置与外极限位置之间可往复移动,滑片的内端与活塞抵接；排气阀片,排气阀片用于打开和关闭排气孔；平动部件,滑片向外移动时驱动平动部件平移以推动排气阀片关闭排气孔,平动件包括主平动件和副平动件,滑片向外移动时驱动主平动件平移,主平动件驱动副平动件平移以推动排气阀片关闭排气孔,主平动件的平移方向与副平动件的平移方向正交。根据本发明的压缩机构,排气阀片的适用性和可靠性好,关闭噪声低,能效高。(The invention discloses a compression mechanism and a refrigerating device. The compression mechanism comprises a cylinder, and a cylinder chamber and a slide sheet groove are arranged in the cylinder; an exhaust hole communicating with the cylinder chamber; a piston; a crankshaft for driving the piston to eccentrically rotate in the cylinder chamber; an upper bearing and a lower bearing rotatably supporting 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; the translation component drives the translation component to translate to push the exhaust valve plates to close the exhaust holes when the sliding sheet moves outwards, the translation component comprises a main translation component and an auxiliary translation component, the sliding sheet drives the main translation component to translate when moving outwards, the main translation component drives the auxiliary translation component to translate to push the exhaust valve plates to close the exhaust holes, and the translation direction of the main translation component is orthogonal to the translation direction of the auxiliary translation component. 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.)

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;

the translational component is driven to translate when the sliding sheet moves outwards so as to push the exhaust valve plate to close the exhaust hole, the translational component comprises a main translational piece and an auxiliary translational piece, the sliding sheet drives the main translational piece to translate when moving outwards, the main translational piece drives the auxiliary translational piece to translate so as to push the exhaust valve plate to close the exhaust hole, and the translation direction of the main translational piece is orthogonal to the translation direction of the auxiliary translational piece.

2. The compression mechanism of claim 1, wherein the primary translation member is connected to an outer end of the slide.

3. The compression mechanism as claimed in claim 1, wherein the primary translational member has a contact surface for contacting the secondary translational member, the contact surface includes a planar section and a guide surface section, the guide surface section is an inclined surface or an arc surface, the planar section is parallel to the reciprocating direction of the slide, the secondary translational member is stationary when the primary translational member is translated and the secondary translational member is in contact with the planar section, and the secondary translational member is translated towards the exhaust hole when the primary translational member is translated and the secondary translational member is in contact with the guide surface section.

4. The compression mechanism of claim 3, wherein the guide surface segment transitions through an arc of a circle with the planar segment.

5. The compression mechanism as claimed in claim 3, wherein the secondary translational member has a first end contacting with the primary translational member and a second end for pushing the discharge valve sheet, the first end surface of the secondary translational member is a circular arc surface, and the secondary translational member is in line contact with the primary translational member.

6. The compression mechanism of claim 1, wherein the discharge plate is a reed and has a fixed end and a free end, the secondary translational member has a first end in contact with the primary translational member and a second end for pushing the discharge plate, and the second end of the secondary translational member is in line contact or surface contact with the discharge plate.

7. The compressing mechanism as recited in claim 1, wherein the secondary translational member is cylindrical, the primary translational member includes a first vertical section, a first horizontal section, a second vertical section, a second horizontal section, and an inclined section, the first vertical section is connected to an outer end of the sliding piece, a first end of the first horizontal section is connected to an upper end of the first vertical section, a lower end of the second vertical section is connected to a second end of the first horizontal section, a first end of the second horizontal section is connected to an upper end of the second vertical section, and the inclined section is connected to a second end of the second horizontal section.

8. The compression mechanism of claim 7, wherein the angled segment is radiused to the second horizontal segment.

9. The compression mechanism as claimed in any one of claims 1 to 8, further comprising a resilient member for urging the secondary translational member towards the primary translational member so as to maintain contact between the secondary translational member and the primary translational member at all times.

10. The compression mechanism as claimed in claim 8, further comprising a lift stopper for limiting the lift of the exhaust valve plate and provided with an avoidance hole for avoiding the auxiliary translational member, wherein the auxiliary translational member is movable in the avoidance hole along the axial direction of the avoidance hole, and the elastic member is stopped between the lift stopper and the auxiliary translational member.

11. The compression mechanism as claimed in claim 10, wherein a counter bore is provided at an end of the avoiding hole adjacent to the primary translational member, the secondary translational member has a first end contacting with the primary translational member and a second end for pushing the discharge valve plate, the first end of the secondary translational member is provided with a circumferential flange, and the elastic member is stopped between a bottom surface of the counter bore and the circumferential flange.

12. A rotary compressor characterized by comprising the compression mechanism according to any one of claims 1 to 11.

13. A refrigerating apparatus comprising the rotary compressor of claim 12.

Technical Field

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

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 generally a reed valve plate having a certain elasticity, i.e., a certain rigidity, and one end of the discharge valve plate is fixed and the other end is free to open and close the discharge hole.

The inventor finds and realizes through research that the greater the rigidity of the exhaust valve plate, the better the closure timeliness of the exhaust valve, and 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

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 diagram illustrating a state in which the translational member of the compression mechanism just contacts the discharge valve sheet according to the embodiment of the present invention.

Fig. 7 is a state diagram of the discharge valve sheet pressed by the translation unit of the compression mechanism according to the embodiment of the present invention.

Fig. 8 is a view showing a state in which the discharge valve sheet is closed by the translational member of the compression mechanism according to the embodiment of the present invention.

Fig. 9A is a perspective view of the main translation member of the compression mechanism according to the embodiment of the present invention.

Fig. 9B is a plan view of the main translation member of the compression mechanism according to the embodiment of the present invention.

Fig. 10A is a plan view of the sub-translation member of the compression mechanism according to the embodiment of the present invention.

Fig. 10B is a plan view of a secondary translational member of the compression mechanism according to another embodiment of the present invention.

Fig. 10C is a perspective view of a secondary translational member of the compression mechanism according to another embodiment of the present invention.

Fig. 11A is a sectional view of a lift stopper of a compression mechanism according to an embodiment of the present invention.

FIG. 11B is a plan view of a lift stop of a compression mechanism according to an embodiment of the present invention.

FIG. 12 is a schematic view of a discharge valve plate of a compression mechanism according to an embodiment of the present invention.

Fig. 13 is a schematic diagram of the compression mechanism according to the embodiment of the present invention with a crank angle of 0 ° or 360 °.

Fig. 14 is a schematic view of a compression mechanism according to an embodiment of the present invention having a crank angle of 180 °.

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; 701. fixing grooves;

8. an exhaust valve plate; 801. a fixed end; 802. a free end; 803. a fixing hole; 804. a windward region;

9. a lift limiter; 901. avoiding holes; 9011. a counter bore; 902. a limiting surface; 903. mounting holes;

11. an elastic member;

12. a translation component; 1201. a primary translational member; 12011. a first vertical section; 120111, fixing columns; 12012. a first horizontal segment; 12013. a second vertical section; 12014. a second horizontal segment; 120141, a planar segment; 12015. an inclined section; 120151, a guide surface section; 1202. an auxiliary translational member; 12021. a circumferential flange.

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 14.

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 14, 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 sheet 8, and a flat movable member 12.

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 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. 14. 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. 13.

The discharge valve sheet 8 is used to open and close the discharge hole 2. The translational component 12 is used for driving the exhaust valve plate 8 to close the exhaust hole 2 when the slide sheet 7 moves outwards. In other words, the translational component 12 is linked with the sliding sheet 7, and when the sliding sheet 7 moves from the inner limit position to the outer limit position, the sliding sheet 7 drives the translational component 12 to push the exhaust valve sheet 8 to close the exhaust hole 2.

As shown in fig. 6 to 8, the translational member 12 includes a primary translational member 1201 and a secondary translational member 1202, and when the slide 7 moves outwards, the primary translational member 1201 is driven to translate, for example, to the left in fig. 6 to 8, and the primary translational member 1201 is driven to translate, for example, to the down in fig. 6 to 8, so as to drive the exhaust valve plate 8 to close the exhaust hole 2. Further, the translation direction of the primary translational member 1201 is orthogonal to the translation direction of the secondary translational member 1202. It can be understood that when the slide sheet 7 moves outwards to drive the main translational member 1201 to move in the horizontal direction, the main translational member 1201 drives the auxiliary translational member 1202 to push the exhaust valve sheet 8 to close the exhaust hole 2 in the vertical direction.

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 translational part 12 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 translation component 12 to close the exhaust hole 2, the timeliness and the reliability of the closing of the exhaust valve plate 8 are improved. Moreover, due to the assistance of the translation component 12, the rigidity design of the exhaust valve plate 8 is flexible, and the exhaust valve plate 8 can be designed to be non-rigid (namely the exhaust valve plate 8 is not fixed), so that the exhaust valve plate 8 is easy to open, the opening degree is large, the exhaust resistance is reduced, the exhaust noise is reduced, and high energy efficiency can be ensured at both high speed and low speed.

In the embodiment of the present invention, the translational part 12 drives the exhaust valve plate 8 to close the exhaust hole 2 when the sliding vane 7 moves outwards, which should be understood in a broad sense as follows.

In some embodiments, as shown in fig. 6-9, the primary translational member 1201 has a contact surface for contacting the secondary translational member 1202, the contact surface includes a planar section 120141 and a guide surface section 120151, and the guide surface section 120151 may be a slope or an arc. The plane segment 120141 is parallel to the reciprocating direction of the slide 7, and when the main translational member 1201 translates and the secondary translational member 1202 contacts the plane segment 120141, the secondary translational member 1202 is stationary, that is, the secondary translational member 1202 does not press the air release valve sheet 8 downward. When the primary translational member 1201 translates and the secondary translational member 1202 contacts the guide surface segment 120151, the secondary translational member 1202 translates toward the exhaust aperture 2. It can be understood that when the primary translational member 1201 moves to the position where the secondary translational member 1202 contacts the guide surface segment 120151, the primary translational member 1201 starts to push the secondary translational member 1202 to press the discharge valve sheet 8 downwards to close the discharge hole 2.

In some embodiments, as shown in fig. 6-9, 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 the first vertical segment 12011 is connected to the outer end of the slide 7, a first end of the first horizontal segment 12012 is connected to an upper end of the first vertical segment 12011, a lower end of the second vertical segment 12013 is connected to a second end of the first horizontal segment 12012, a first 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 second end of the second horizontal segment 12014. It is understood that as shown in fig. 9A and 9B, the upper end of the first vertical section 12011 is connected to the right end of the first horizontal section 12012, preferably in a circular arc transition, the lower end of the second vertical section 12013 is connected to the left end of the first horizontal section 12012, the right end of the second horizontal section 12014 is connected to the upper end of the second vertical section 12013, and the inclined section 12015 is connected to the left end of the second horizontal section 12014, preferably in a circular arc transition. Specifically, the lower surface of the inclined section 12015 forms the guide surface section 120151, the guide surface section 120151 may be an inclined surface or an arc surface, and the lower surface of the second horizontal section 12014 forms the planar section 120141.

Further, as shown in fig. 9A and 9B, the guide surface segment 120151 transitions into the flat surface segment 120141 via a circular arc surface. Preferably, the arc surfaces are tangent to the guide surface segment 120151 and the planar segment 120141, respectively. Optionally, the guide surface segment 120151 is generally circular and tangential to the planar segment 120141. The main translational member 1201 and the auxiliary translational member 1202 can be in smooth transition, the phenomenon that the main translational member 1201 and the auxiliary translational member 1202 are blocked when in linkage is avoided, and abrasion loss between the main translational member 1201 and the auxiliary translational member 1202 is reduced.

In some embodiments, as shown in fig. 10, the secondary translational member 1202 is cylindrical, specifically, the secondary translational member 1202 has a first end in contact with the primary translational member 1201 and a second end for pushing the exhaust valve sheet 8, and an end surface of the first end of the secondary translational member 1202 is a circular arc surface, that is, an end of the secondary translational member 1202 in contact with the primary translational member 1201 is a circular arc surface. When the secondary translational member 1202 contacts with the primary translational member 1201, the secondary translational member 1202 is in line contact, so that the contact area between the secondary translational member 1202 and the primary translational member 1201 is reduced, and further, the abrasion loss between the primary translational member 1201 and the secondary translational member 1202 is reduced.

Further, as shown in fig. 10, the end surface of the second end of the secondary translational member 1202 is an arc-shaped surface or a flat surface. In other words, the second end of the secondary translational member 1202 and the discharge valve sheet 8 may be in line contact or surface contact. When the end surface of the second end of the secondary translational member 1202 is an arc-shaped surface, the contact area between the secondary translational member 1202 and the exhaust valve plate 8 can be reduced, and further the friction loss between the secondary translational member 1202 and the exhaust valve plate 8 is reduced; when the end surface of the second end of the secondary translational member 1202 is a plane, the reliability that the secondary translational member 1202 pushes the exhaust valve sheet 8 to close the exhaust hole 2 can be improved.

Preferably, as shown in fig. 9 and 10, in order to ensure good contact between the primary translational member 1201 and the secondary translational member 1202, the contact surface between the secondary translational member 1202 and the primary translational member 1201 is a circular arc surface, and the contact relationship is a line contact. When the exhaust valve plate 8 is a reed valve plate, the motion of the reed valve plate for opening and closing the exhaust hole 2 is nonlinear motion, and in order to ensure that the auxiliary translational member 1202 and the exhaust valve plate 8 have good contact, the contact surface of the auxiliary translational member 1202 and the exhaust valve plate 8 is an arc surface, and the contact relationship is linear contact. Because the motion trail of the secondary translational member 1202 is not consistent with the motion trail of the exhaust valve plate 8, the orientations of the secondary translational member 1202 on the contact arc surfaces of the main translational member 1201 and the exhaust valve plate 8 are also not consistent. Specifically, the arc surface of the secondary translational member 1202 and the primary translational member 1201 is outwardly convex, that is, the middle part of the contact surface is an arc-shaped structure protruding upward, as shown in fig. 10B; the arc surface of the secondary translational member 1202 and the exhaust valve plate 8 is concave, that is, the middle part of the contact surface is of an arc structure which is concave downwards, as shown in fig. 10C; the secondary translational member 1202 is more stable and reliable when linked with the primary translational member 1201 and the secondary translational member 1202.

In some embodiments, as shown in fig. 6-9, the primary translational member 1201 is connected to the outer end of the slide 7. It can be understood that the main translational member 1201 and the sliding vane 7 can be always in contact with each other and cannot be separated from each other, so that the sliding vane 7 is prevented from being collided with the main translational member 1201 during movement, noise is reduced, and the service lives of the translational member 12 and the sliding vane 7 are prolonged. Alternatively, the main translational member 1201 may be fixed to the outer end of the sliding piece 7 by bonding, welding, riveting or other fixing means. Preferably, a fixing column 120111 extends from the first vertical segment 12011 of the main translational member 1201 towards the sliding sheet 7, a fixing groove 701 is formed in a side of the outer end of the sliding sheet 7 adjacent to the main translational member 1201, and the main translational member 1201 and the outer end of the sliding sheet 7 can be connected by inserting the fixing column 120111 into the fixing groove 701, so as to facilitate replacement and installation of parts of the compression mechanism 300.

In some embodiments, as shown in fig. 6 to 8 and 11, the compression mechanism 300 further includes a lift stopper 9, the lift stopper 9 is disposed above the exhaust valve plate 8, the lift stopper 9 is configured to limit the lift of the exhaust valve plate 8, that is, to limit the stroke of the free end 802 of the exhaust valve plate 8, the lift stopper is provided with an avoidance hole 901 configured to be matched with the secondary translational member 1202, and the secondary translational member 1202 can pass through the avoidance hole 901 and reciprocate along the axial direction of the avoidance hole 901, that is, the avoidance hole 901 serves to guide the secondary translational member 1202.

In some embodiments, as shown in fig. 6-8, the primary translational member 1201 and the secondary translational member 1202 are always in contact. Optionally, the main translational member 1201 and the auxiliary translational member 1202 are magnetic members, so that when the main translational member 1201 pushes the auxiliary translational member 1202 to move, the main translational member 1201 and the auxiliary translational member 1202 can be always kept in contact by magnetic attraction. Preferably, the compression mechanism 300 further comprises an elastic element 11, the elastic element 11 being configured to push the secondary translational element 1202 towards the primary translational element 1201 so as to keep the secondary translational element 1202 in contact with the primary translational element 1201 at all times. Specifically, the elastic member 11 is, for example, a compression spring that is stopped between the lift limiter 9 and the secondary translational member 1202. In order to further fix the compression spring, a counter bore 9011 is formed in one end, close to the main translational member 1201, of the avoidance hole 901, the secondary translational member 1202 is provided with a first end, in contact with the main translational member 1201, and a second end used for pushing the exhaust valve plate 8, a circumferential flange 12021 is formed in the first end of the secondary translational member 1202, and the compression spring abuts between the bottom surface of the counter bore 9011 and the circumferential flange 12021. The auxiliary translational member 1202 has an elastic force which is always abutted against the main translational member 1201, so that the main translational member 1201 and the auxiliary translational member 1202 are always in contact.

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.

As shown in fig. 2 and 3, in some embodiments of the present invention, the discharge valve sheet 8 is a reed valve sheet, and the discharge air has a fixed end 801 fixed to the upper bearing 5 and a free end 802 for opening and closing the discharge air hole 2. The fixed end 801 of the discharge valve plate 8 is provided with a fixing hole 803, and the fixed end 801 of the discharge valve plate 8 is fixed to the upper bearing 5 by, for example, a bolt, welding, riveting, or other fixing means. Since the discharge valve sheet 8 closes the discharge hole 2 by its own elasticity and the driving of the translational member 12, the discharge valve sheet 8 may have no rigidity. It should be understood that the present invention is not limited thereto, for example, the discharge valve plate 8 may be unfixed, opened by gas thrust, and closed by the driving of the translation member 12, in which case the discharge valve plate 8 may also be referred to as a non-rigid discharge valve plate 8.

In some embodiments, as shown in fig. 2 and 3, a receiving groove 501 is formed on the upper surface of the upper bearing 5, and the air release valve sheet 8 is installed in the receiving groove 501. The fixed end 801 of the reed valve plate is fixed at the bottom of the receiving groove 501, the free end 802 of the exhaust hole 2 covers the exhaust hole 2, and when exhausting, the free end 802 of the reed valve plate bends under the action of gas thrust to open the exhaust hole 2.

In some embodiments, as shown in fig. 12, when the exhaust valve plate 8 closes the exhaust hole 2, a projection area of the exhaust hole 2 on the exhaust valve plate 8 is set as a windward area 804 of the exhaust valve plate 8, and a contact position of the translational member 12 when contacting the exhaust valve plate 8 is located in the windward area 804. Preferably, the diameter of the windward region 804 is equal to the diameter of the exhaust vent 2. The contact position of the translation component 12 and the exhaust valve plate 8 is located in the windward area 804, when the translation component 12 presses the exhaust valve plate 8 to close the exhaust hole 2, the exhaust hole 2 is closed stably, the exhaust valve plate 8 is not easy to rebound or warp when the exhaust hole 2 is closed, and the closeness of the exhaust hole 2 is improved.

The exhaust holes 2 can be one or more, the translational component 12 is arranged corresponding to at least one exhaust hole 2, namely, the exhaust valve plate 8 for opening and closing at least one exhaust hole 2 is driven by the translational component 12. Preferably, the translation members 12 are arranged in a one-to-one correspondence with the exhaust holes 2.

In some embodiments, after the sliding piece 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 to close the air release flap 8.

Alternatively, when the sliding vane 7 is at the inner limit position, the secondary translational member 1202 contacts with the guide surface end and the exhaust 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 exhaust valve plate 8 to move towards the exhaust hole 2 to close the exhaust hole 2. Therefore, the auxiliary translation piece 1202 is always in contact with the guide surface section 120151 and the exhaust valve plate 8, so that 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.

Alternatively, when the sliding piece 7 is in the inner limit position, the secondary translational member 1202 is in contact with the plane segment 120141, but only after the primary translational member 1201 translates a predetermined distance to the left, the secondary translational member 1202 is in contact with the guide plane segment 120151. When the sliding sheet 7 moves outwards from the inner limit position, the main translational member 1201 is driven to move outwards, and at this time, the upper end of the auxiliary translational member 1202 is in contact with the plane section 120141, so that the auxiliary translational member 1202 does not move downwards, and when the sliding sheet 7 and the main translational member 1201 move outwards for a predetermined distance, the upper end of the auxiliary translational member 1202 starts to be in contact with the guide surface section 120151, so that the guide surface section 120151 drives the auxiliary translational member 1202 to move downwards, in this case, the auxiliary translational member 1202 can be immediately in contact with the exhaust valve sheet 8 when in contact with the guide surface section 120151 to drive the exhaust valve sheet 8, or can be in contact with the exhaust valve sheet 8 after moving downwards for a predetermined distance to drive the exhaust valve sheet 8.

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 14, a compression mechanism 300 according to some 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. The accommodating groove 501 is also internally provided with an exhaust valve plate 8 and a lift limiter 9, the lift limiter 9 is arranged on the exhaust valve plate 8, the exhaust valve plate 8 is a reed valve plate with elasticity, one end of the exhaust valve plate 8 is a fixed end 801 fixed at the bottom of the accommodating groove 501, and the other end of the exhaust valve plate 8 is a free end 802 for opening and closing the exhaust hole 2. One end of the lift limiter 9 is 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.

Specifically, the main translational member 1201 includes a first vertical section 12011, a first horizontal section 12012, a second vertical section 12013, a second horizontal section 12014, and an inclined section 12015, wherein an upper end of the first vertical section 12011 is connected to a right end of the first horizontal section 12012, preferably, the first horizontal section 12012 is in a circular arc transition, a lower end of the second vertical section 12013 is connected to a left end of the first horizontal section 12012, a right end of the second horizontal section 12014 is connected to an upper end of the second vertical section 12013, the inclined section 12015 is connected to a left end of the second horizontal section 12014, a lower surface of the inclined section 12015 forms a guide surface section 120151, the guide surface section 120151 may be an inclined surface or an arc surface, and a lower surface of the second horizontal section 12014 forms a plane section 120141. The first vertical section 12011 extends vertically downwards towards the sliding sheet 7 to form a fixing column 120111, and a fixing groove 701 for mounting the fixing column 120111 is formed in one side, adjacent to the main translational member 1201, of the outer end of the sliding sheet 7, so that the main translational member 1201 is connected with the outer end of the sliding sheet 7.

In addition, the auxiliary translational member 1202 is fitted in the avoidance hole 901 of the lift limiter 9, a compression spring is sleeved on the outer wall of the auxiliary translational member 1202, one end of the compression spring abuts against the circumferential flange 12021 at one end of the auxiliary translational member 1202, and the other end of the compression spring abuts against the counterbore 9011 in the lift limiter 9, so that the auxiliary translational member 1202 has an elastic force which always abuts against the main translational member 1201. When the sliding sheet 7 moves outwards, the outer end of the sliding sheet 7 pushes the first vertical section 12011 to move outwards, and then the auxiliary horizontal moving piece 1202 is pushed to move downwards through the guide surface section 120151, so that the exhaust valve sheet 8 is driven 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. 6 to 8, when the crank angle is 180 degrees, the sliding piece 7 moves to the inner limit position, the exhaust valve piece 8 does not close the exhaust hole 2 and allows the exhaust through the exhaust hole 2, and the upper end of the secondary translational member 1202 contacts the plane section 120141 of the primary translational member 1201. When the piston 3 continues to rotate from a 180-degree angle, that is, the sliding piece 7 moves from the inner limit position shown in fig. 14 to the outer limit position shown in fig. 13, the sliding piece 7 pushes the main translational piece 1201 to translate from the position shown in fig. 6 to the position shown in fig. 8, the upper end of the secondary translational piece 1202 starts to contact with the guide surface segment 120151, so that the secondary translational piece 1202 is driven to translate downwards, the exhaust valve plate 8 is driven to close the exhaust hole 2 gradually, and finally, the sliding piece 7 moves to the outer limit position shown in fig. 13, and the secondary translational piece 1202 drives the exhaust valve plate 8 to close the exhaust hole 2 completely.

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. The rotary compressor implemented by the invention has more obvious effect in high-speed operation, for example, the rigidity of the exhaust valve plate 8 can be freely and flexibly designed, the timeliness and the reliability of closing the exhaust valve plate 8 are ensured, 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 above 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.