A vortex structure

Abstract

The present invention belongs to the field of vortex compression technology and provides a vortex structure, comprising: a fixed scroll member, a first static disk and a second static disk are respectively provided at both ends of the fixed scroll member, and an inlet and an outlet are provided on the fixed scroll member; a first movable disk, which is movably connected to the first static disk; and a second movable disk, which is arranged opposite to the first movable disk and movably connected to the second static disk. Compared with the prior art, the advantage of the present invention is that the first connecting portion provided by the first movable disk and the second connecting portion provided by the second movable disk both penetrate the fixed scroll member and are connected by bolts to form a through cavity, and the eccentric shaft passes through the through cavity, so that the through cavity provides a sealing effect for the eccentric shaft, and then when the eccentric shaft drives the first movable disk and the first static disk to revolve and the second movable disk and the second static disk to revolve, dust and other objects entering the inlet will not touch the eccentric shaft, thereby avoiding the possibility of eccentric shaft wear and failure.

Description

Technical Field

[0001] The invention belongs to the technical field of vortex compression, and in particular relates to a vortex structure. Background Art

[0002] Currently, scroll compressors experience large axial forces and overturning moments during operation, which requires the design of sufficient support structures, resulting in complex structures and excessive bearing loads.

[0003] The existing vacuum scroll structure of Japan's Iwata adopts a back-to-back scroll disk structure, which can offset the axial force and overturning moment. However, the exhaust port is in the center, and the eccentric shaft and the exhaust port at the center need to be sealed with a shaft seal. In addition, the exhaust temperature of the exhaust port is relatively high, so the high temperature and high pressure place high demands on the bearings and shaft seals, resulting in an increased risk of failure. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a vortex structure in view of the current status of the existing technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: to propose a vortex structure, comprising:

[0006] A fixed scroll member, with a first stator plate and a second stator plate provided at both ends thereof, and an inlet and an outlet provided on the fixed scroll member;

[0007] a first movable disk, movably connected to the first static disk;

[0008] a second movable plate, which is arranged opposite to the first movable plate and movably connected to the second stationary plate, wherein a first connecting portion and a second connecting portion are respectively provided at the center of the first movable plate and the second movable plate, and the first connecting portion and the second connecting portion both pass through the fixed scroll and are connected by bolts to form a through cavity;

[0009] An eccentric shaft passes through the through cavity.

[0010] In the above scroll structure, a through hole is opened at the center of the fixed scroll member, the first connecting portion and the second connecting portion both pass through the through hole and are connected by bolts to form a through cavity, and the outlet is connected to the through hole.

[0011] In the above-mentioned scroll structure, a limiting groove is provided on the end surface of the first connecting portion, a sealing ring is provided in the limiting groove, and the sealing ring movably contacts the end surface of the second connecting portion.

[0012] In the above-mentioned scroll structure, a first clamping portion is provided on the first connecting portion, a second clamping portion is provided on the second connecting portion, a first bearing and a second bearing are provided on the eccentric shaft, the first bearing is connected to the first clamping portion, and the second bearing is connected to the second clamping portion.

[0013] In the above-mentioned vortex structure, a first counterweight block and a second counterweight block are respectively provided at both ends of the eccentric shaft.

[0014] In the above scroll structure, a shell cover and a bottom cover are respectively provided at both ends of the fixed scroll member, and the shell cover and the bottom cover are respectively connected to the fixed scroll member by bolts.

[0015] In the above-mentioned vortex structure, the shell cover is provided with a third clamping portion, the bottom cover is provided with a fourth clamping portion, and the two ends of the eccentric shaft are respectively provided with a third bearing and a fourth bearing, the third bearing is connected to the third clamping portion, and the fourth bearing is connected to the fourth clamping portion.

[0016] In the above-mentioned scroll structure, the shell cover and the fixed scroll member are connected by bolts to form a first cavity, the bottom cover and the fixed scroll member are connected by bolts to form a second cavity, the first inlet end is connected to the first cavity, and the second inlet end is connected to the second cavity.

[0017] In the above-mentioned scroll structure, the inlet has a first inlet end and a second inlet end, the first inlet end is connected to the first volume cavity, and the second inlet end is connected to the second volume cavity.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The first connecting portion provided on the first movable plate and the second connecting portion provided on the second movable plate both penetrate the fixed scroll member and are connected by bolts to form a through cavity. The eccentric shaft passes through the through cavity, so that the through cavity provides a seal for the eccentric shaft. Because the first movable plate and the second movable plate are arranged face to face and a sealing ring, i.e., an O-ring seal, is provided at the connection, the high-temperature and high-pressure gas at the exhaust port will not contact the eccentric shaft, thereby eliminating the need for complex sealing treatment and greatly improving the operating condition of the bearing.

[0020] 2. The first and second static plates are respectively provided at both ends of the fixed scroll member of this structure. The first and second dynamic plates are symmetrically arranged face to face to prevent unilateral deviation, thereby solving the problem of overturning moment and axial force.

[0021] 3. The structure is highly practical and can improve compression efficiency when the structure is in normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of the present invention;

[0023] FIG2 is a schematic structural diagram of the present invention;

[0024] FIG3 is a cross-sectional view of the structure of the present invention;

[0025] FIG4 is an exploded view of the structure of the present invention;

[0026] FIG5 is a schematic structural diagram of a fixed scroll;

[0027] FIG6 is a schematic structural diagram of the first movable disk and the second movable disk;

[0028] Figure 7 is a schematic diagram of the structure of the eccentric shaft.

[0029] In the figure, 1. fixed scroll member; 2. first static plate; 3. second static plate; 4. inlet; 5. outlet; 6. first moving plate; 7. second moving plate; 8. first connecting part; 9. second connecting part; 10. through cavity; 11. eccentric shaft; 12. through hole; 13. limiting groove; 14. sealing ring; 15. first clamping part; 16. second clamping part; 17. first bearing; 18. second bearing; 19. first counterweight; 20. second counterweight; 21. shell cover; 22. bottom cover; 23. third clamping part; 24. fourth clamping part; 25. third bearing; 26. fourth bearing; 27. first accommodating cavity; 28. second accommodating cavity; 29. ​​first inlet end; 30. second inlet end; 31. eccentric part. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0031] As shown in Figures 1 to 7, the scroll structure includes: a fixed scroll member 1, with a first stator 2 and a second stator 3 provided at both ends respectively, and an inlet 4 and an outlet 5 provided on the fixed scroll member 1; a first movable plate 6, which is movably connected to the first stator 2; a second movable plate 7, which is arranged opposite to the first movable plate 6 and movably connected to the second stator 3, and a first connecting portion 8 and a second connecting portion 9 are provided at the centers of the first movable plate 6 and the second movable plate 7 respectively, and the first connecting portion 8 and the second connecting portion 9 both pass through the fixed scroll member 1 and are connected by bolts to form a through cavity 10; an eccentric shaft 11, which passes through the through cavity 10.

[0032] The left end face of the fixed scroll 1 is provided with a first static plate 2, the right end face of the fixed scroll 1 is provided with a second static plate 3, and the outlet 5 is provided at the center of the fixed scroll 1, and the inlet 4 is provided on the side wall of the fixed scroll 1. The first static plate 2 and the second static plate 3 are both connected to the inlet 4 and the outlet 5, and the first movable plate 6 and the second movable plate 7 are arranged face to face. The advantage of doing so is that the structure is symmetrical. When the machine is running to compress the gas, at any time, the axial force and overturning moment generated by the first static plate 2 and the first movable plate 6 are equal in magnitude and opposite in direction to the axial force and overturning moment generated by the second static plate 3 and the second movable plate 7, thereby eliminating the overturning moment and axial force problem of the whole machine. The first connecting part 8 passes through the fixed vortex part so that the impeller of the first movable plate 6 can be movably abutted against the impeller of the first static plate 2. The second connecting part 9 passes through the fixed vortex part so that the impeller of the second movable plate 7 can be movably abutted against the impeller of the second static plate 3. The first connecting part 8 The end face of the eccentric shaft 11 is abutted against the end face of the second connecting part 9, and then the first connecting part 8 and the second connecting part 9 are manually connected by bolts to form a through cavity 10. The eccentric shaft 11 has an eccentric part 31, which is connected to the first movable disc 6 and the second movable disc 7. During the connection process, the eccentric part of the eccentric shaft 11 is inserted into the through cavity 10. The driving mode of the eccentric shaft 11 can be connected to the motor by a coupling, or can be driven by a belt. When working, the eccentric shaft 11 is driven to rotate by the above-mentioned external driving device, and the eccentric part 31 of the eccentric shaft 11 drives the first movable disc 6 and the second movable disc 7 to make a planar orbit relative to the first static disc 2 and the second static disc 3 respectively. At this time, the impeller of the first movable disc 6 is meshed with the impeller of the first static disc 2, and the impeller of the second movable disc 7 is repeatedly opened and closed synchronously. The gas at the inlet 4 is sucked into the impeller of the first movable disc 6 and the impeller of the first static disc 2 The inner cavity of the spiral structure formed by the impeller of the first movable plate 6 and the inner cavity of the spiral structure formed by the impeller of the second movable plate 7 and the impeller of the second static plate 3 are driven by the eccentric shaft 11. The impeller of the first movable plate 6 and the impeller of the first static plate 2 are engaged with each other. The multiple volume chambers in the spiral structure move from the outside to the center, and the volume continues to decrease, so that the gas is compressed and squeezed to the center of the spiral, and then stably discharged from the outlet 5. The first movable plate 6 and the second movable plate 7 are arranged face to face, and a sealing ring 14, i.e., an O-ring seal, is provided at the connection. Therefore, the high-temperature and high-pressure gas at the exhaust port 5 will not contact the eccentric shaft 11, so there is no need for complicated sealing treatment, which greatly improves the operating condition of the bearing.

[0033] Preferably, a through hole 12 is defined at the center of the fixed scroll 1. The first connecting portion 8 and the second connecting portion 9 both extend through the through hole 12 and are bolted together to form a through cavity 10. The outlet 5 is connected to the through hole 12. The first connecting portion 8 and the second connecting portion 9 each extend through the through hole 12 and are bolted together to form the through cavity 10. Sufficient operating clearance is left between the through cavity 10 and the through hole 12. Gas compressed during the orbital motion of the impeller of the first rotating plate 6 and the first stator 2, and the impeller of the second rotating plate 7 and the second stator 3, enters the clearance between the diameter of the through cavity 10 and the through hole 12, and is discharged through the outlet 5.

[0034] Further preferably, a limiting groove 13 is provided on the end surface of the first connecting portion 8 , a sealing ring 14 is provided in the limiting groove 13 , and the sealing ring 14 movably abuts against the end surface of the second connecting portion 9 .

[0035] A sealing ring 14 is provided on the limiting groove 13 . When the first connecting part 8 and the second connecting part 9 are connected by bolts, the sealing ring 14 can effectively prevent gas and fine dust from entering through the gap between the diameters of the first connecting part 8 and the second connecting part 9 and affecting the eccentric shaft 11 .

[0036] Further preferably, the first connecting portion 8 is provided with a first clamping portion 15 , the second connecting portion 9 is provided with a second clamping portion 16 , the eccentric shaft 11 is provided with a first bearing 17 and a second bearing 18 , the first bearing 17 is connected to the first clamping portion 15 , and the second bearing 18 is connected to the second clamping portion 16 .

[0037] The first clamping portion 15 and the second clamping portion 16 can respectively limit the first bearing 17 and the second bearing 18, so that the eccentric portion 31 of the eccentric shaft 11 can stably drive the first movable plate 6 and the second movable plate 7 to revolve in a plane relative to the first stator plate 2 and the second stator plate 3, respectively.

[0038] Preferably, a first counterweight 19 and a second counterweight 20 are respectively provided at both ends of the eccentric shaft 11 .

[0039] When the machine is running, the first counterweight 19 and the second counterweight 20 can offset the centrifugal force and centrifugal torque generated by the first movable plate 6 and the second movable plate 7, thereby ensuring that the machine does not vibrate.

[0040] Preferably, a shell cover 21 and a bottom cover 22 are respectively provided at both ends of the fixed scroll 1, and the shell cover 21 and the bottom cover 22 are respectively connected to the fixed scroll 1 by bolts.

[0041] The shell cover 21 and the bottom cover 22 can protect the fixed scroll 1, the first movable plate 6 and the second movable plate 7, and facilitate subsequent maintenance.

[0042] Further preferably, the shell cover 21 is provided with a third clamping portion 23, the bottom cover 22 is provided with a fourth clamping portion 24, and the eccentric shaft 11 is provided with a third bearing 25 and a fourth bearing 26 at both ends respectively. The third bearing 25 is connected to the third clamping portion 23, and the fourth bearing 26 is connected to the fourth clamping portion 24.

[0043] The third clamping portion 23 and the fourth clamping portion 24 can limit the third bearing 25 and the fourth bearing 26 respectively. The third bearing 25 and the fourth bearing 26 can reduce the friction coefficient during movement and ensure the rotation accuracy of the eccentric shaft 11, thereby improving the compression efficiency.

[0044] Further preferably, the shell cover 21 and the fixed scroll member 1 are connected by bolts to form a first cavity 27, the bottom cover 22 and the fixed scroll member 1 are connected by bolts to form a second cavity 28, the first inlet end 29 is connected to the first cavity 27, and the second inlet end 30 is connected to the second cavity 28.

[0045] The first cavity 27 includes a first moving plate 6 and a first static plate 2, and the second cavity 28 includes a second moving plate 7 and a second static plate 3. The first moving plate 6 in the first cavity 27 and the second moving plate 7 in the second cavity 28 revolve synchronously relative to the first static plate 2 in the first cavity 27 and the second static plate 3 in the second cavity 28. This has the advantage of low vibration and higher compression efficiency under the same working conditions.

[0046] Further preferably, the inlet 4 has a first inlet end 29 and a second inlet end 30 , the first inlet end 29 is communicated with the first cavity 27 , and the second inlet end 30 is communicated with the second cavity 28 .

[0047] The inlet 4 has a first inlet end 29 and a second inlet end 30, and has only one outlet 5. During operation, the first inlet end 29 on the first chamber 27 inhales gas, and the second inlet end 30 on the second chamber 28 inhales gas. The gas in the first chamber 27 and the second chamber 28 is synchronously compressed and discharged from the outlet 5, thereby improving the compression efficiency.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, in the present invention, descriptions such as "first," "second," and "one" are for descriptive purposes only and should not be understood to indicate or imply their relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] In the present invention, unless otherwise specified or limited, the terms "connected" and "fixed" should be understood broadly. For example, "fixed" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A vortex structure, characterized in that: include: A fixed scroll member, with a first stator plate and a second stator plate provided at both ends thereof, and an inlet and an outlet provided on the fixed scroll member; a first movable disk, movably connected to the first static disk; a second movable plate, which is arranged opposite to the first movable plate and movably connected to the second stationary plate, wherein a first connecting portion and a second connecting portion are respectively provided at the center of the first movable plate and the second movable plate, and the first connecting portion and the second connecting portion both pass through the fixed scroll and are connected by bolts to form a through cavity; an eccentric shaft passing through the through cavity; A through hole is formed at the center of the fixed scroll, the first connecting portion and the second connecting portion both pass through the through hole and are connected by bolts to form a through cavity, and the outlet is connected to the through hole; A limiting groove is provided on the end surface of the first connecting portion, a sealing ring is provided in the limiting groove, and the sealing ring movably contacts the end surface of the second connecting portion; The two ends of the eccentric shaft are respectively provided with a first counterweight block and a second counterweight block; Driven by the eccentric shaft, the impeller of the first moving disc and the impeller of the first static disc engage with each other, and the multiple volume chambers in the spiral structure move from the outside to the center, and the volume continues to decrease, so that the gas is compressed and squeezed to the center of the spiral, and then stably discharged from the outlet; the high-temperature and high-pressure gas at the air inlet will not contact the eccentric shaft, so there is no need for complicated sealing treatment, which greatly improves the operating condition of the bearing.

2. A vortex structure according to claim 1, characterized in that: The first connecting portion is provided with a first clamping portion, the second connecting portion is provided with a second clamping portion, the eccentric shaft is provided with a first bearing and a second bearing, the first bearing is connected to the first clamping portion, and the second bearing is connected to the second clamping portion.

3. A vortex structure according to claim 1, characterized in that: A shell cover and a bottom cover are respectively provided at both ends of the fixed scroll member, and the shell cover and the bottom cover are respectively connected to the fixed scroll member through bolts.

4. A vortex structure according to claim 3, characterized in that: The shell cover is provided with a third clamping portion, the bottom cover is provided with a fourth clamping portion, and the two ends of the eccentric shaft are respectively provided with a third bearing and a fourth bearing, the third bearing is connected to the third clamping portion, and the fourth bearing is connected to the fourth clamping portion.

5. A vortex structure according to claim 3, characterized in that: The shell cover and the fixed scroll are connected by bolts to form a first cavity, the bottom cover and the fixed scroll are connected by bolts to form a second cavity, the inlet has a first inlet end and a second inlet end, the first inlet end is connected to the first cavity, and the second inlet end is connected to the second cavity.

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