CN214660824U - Floating vortex device sealed by magnetic force - Google Patents
Floating vortex device sealed by magnetic force Download PDFInfo
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- CN214660824U CN214660824U CN202022791211.5U CN202022791211U CN214660824U CN 214660824 U CN214660824 U CN 214660824U CN 202022791211 U CN202022791211 U CN 202022791211U CN 214660824 U CN214660824 U CN 214660824U
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- magnet magnetic
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Abstract
The utility model provides a floating vortex device sealed by magnetic force, which comprises a movable vortex, a fixed vortex and an eccentric shaft, wherein the movable vortex comprises a movable vortex element and a movable vortex end plate; the fixed scroll comprises a fixed scroll element and a fixed scroll end plate, and the movable scroll element and the scroll element are in a spiral shape or an involute shape; the top of the movable scroll element is abutted with the bottom of the fixed scroll end plate, and the top of the fixed scroll element is abutted with the bottom of the movable scroll end plate; and magnetic devices for ensuring the axial contact and sealing of the top and bottom surfaces of the movable scroll and the fixed scroll are arranged on the movable scroll end plate and the fixed scroll end plate. The utility model discloses vortex expander or compressor are mobile, decide with magnetic force guarantee between the scroll move, decide scroll contact seal, can not cause the radial leakage between vortex expander or compressor scroll top, the bottom surface, improve vortex expander or compressor work efficiency. The utility model discloses magnetic attraction compares and is the about power of non-contact in spring force, does not have the friction, reduces or avoids the frictional heating, friction loss.
Description
Technical Field
The utility model belongs to positive displacement fluid displacement device field, concretely relates to utilize magnetic force sealed floating vortex device is applied to expander and compressor etc..
Background
In order to prevent radial leakage of the top and bottom surfaces of the fixed and movable scrolls, the floating scroll expander or compressor requires that the top and bottom surfaces corresponding to the molded lines of the fixed and movable scrolls are tightly attached in the axial direction to achieve contact sealing between the top and bottom surfaces. Otherwise, leakage of the compressed air chamber can be caused, and the working efficiency of the expander or the compressor is affected.
The existing solution is that a back pressure chamber is arranged on the back surface of a floating type scroll expander or a movable scroll of a compressor. The back pressure chamber is provided with a spring or/and the pressure of the introduced gas. The gas axial separating force acting on the top and bottom surfaces of the movable scroll is overcome by the action of the spring force or gas pressure on the movable scroll, so that the contact sealing between the movable and fixed scrolls of the expander or the compressor in the axial direction is realized.
The gas pressure and spring force of the back pressure chamber act on the back pressure chamber sealing piston. Friction is generated between a thrust surface of the sealing piston and a thrust bearing of the base bearing thrust, and the heat generated by the friction can reduce the working efficiency of the floating scroll expander or the compressor.
Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an utilize the sealed floating vortex device of magnetic force that reduces and even cancels the frictional force between back pressure room piston and the base thrust bearing.
In order to solve the technical problem, the utility model provides an utilize magnetic force sealed floating vortex device. For the sake of brevity, the detailed structure of the present invention in the floating scroll expander is mainly described herein. The principle and structure are the same as those of the compressor. The utility model comprises a movable scroll, a fixed scroll and an eccentric shaft, wherein the movable scroll comprises a movable scroll element and a movable scroll end plate; the fixed scroll comprises a fixed scroll element and a fixed scroll end plate, and the movable scroll element and the scroll element are in a spiral shape or an involute shape; the top of the movable scroll element is abutted with the bottom of the fixed scroll end plate, and the top of the fixed scroll element is abutted with the bottom of the movable scroll end plate (or simply referred to as the contact of the top and the bottom of the movable scroll and the fixed scroll); the movable scroll is driven by the eccentric shaft, and the eccentric shaft drives the movable scroll element to do circular translation around the fixed scroll element; (or called orbiting); the contact and separation part between the movable scroll element and the fixed scroll element and the part between the movable scroll end plate and the fixed scroll end plate form at least one sealed air chamber together;
the movable scroll end plate and the fixed scroll end plate are provided with magnetic devices for ensuring the axial contact and sealing of the top and bottom surfaces of the movable scroll and the fixed scroll;
the magnetic device comprises a permanent magnet magnetic foot, a permanent magnet magnetic foot base and a steel ring;
one of the fixed scroll end plate and the movable scroll end plate is provided with an annular groove, a permanent magnet magnetic foot base is fixedly arranged in the groove, and the permanent magnet magnetic feet are uniformly or non-uniformly distributed on the permanent magnet magnetic foot base; the other is provided with a steel ring;
the steel ring is matched with the permanent magnet magnetic foot and the permanent magnet magnetic foot base for use, and a gap is reserved between the permanent magnet magnetic foot and the permanent magnet magnetic foot base and the steel ring; the permanent magnet magnetic foot and the gap between the permanent magnet magnetic foot base and the steel ring ensure that the magnetic attraction force between the permanent magnet magnetic foot and the steel ring is greater than or equal to the axial separating force of the movable scroll and the fixed scroll during working under the assistance of other mechanical force or without the assistance of other mechanical force.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the permanent magnet magnetic foot base is arranged on the outer side of the fixed scroll element in a surrounding manner;
the steel ring is disposed around the outside of the orbiting scroll element.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the radial thickness of the steel ring has a certain size difference with the total radial thickness of the permanent magnet magnetic foot and the permanent magnet magnetic foot base;
the radial thickness of the steel ring is larger than the total radial thickness of the permanent magnet magnetic foot and the permanent magnet magnetic foot base, and the permanent magnet magnetic foot base are always positioned in the radial thickness area of the steel ring in the orbiting process of the orbiting scroll; or on the contrary, the radial thickness of the steel ring is smaller than the total radial thickness of the permanent magnet magnetic foot and the permanent magnet magnetic foot base, and the steel ring is always positioned in the total radial thickness area of the permanent magnet magnetic foot and the permanent magnet magnetic foot base in the orbiting process of the orbiting scroll.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the steel ring is made of steel which can be attracted by a magnet;
the steel ring has an axial length less than an axial length of the orbiting scroll element.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the quantity and the magnetic force of the permanent magnet magnetic feet are determined according to the magnitude of the separating force generated by the expansion of the gas between the movable scroll and the fixed scroll, and the magnetic attraction force between the permanent magnet magnetic feet and the steel ring is slightly larger than the separating force generated by the expansion of the medium when the expander works.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the base is provided with a shaft hole, a bearing is arranged in the shaft hole, and the eccentric shaft is arranged on the base through the bearing; one end of a motor of the vortex expansion machine is regarded as a front end, and one section of the vortex mechanism is regarded as a rear end; the front end part of the eccentric shaft is provided with a front balance block, and the rear end part of the eccentric shaft is provided with a rear balance block.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the fixed scroll end plate is provided with an air inlet and an air outlet which are communicated with the sealed air chamber;
when the gas expansion valve is used as expansion gas, the central position of the air inlet hole communicated with the sealed air chamber is regarded as an air inlet chamber, and the edge position of the air outlet hole communicated with the sealed air chamber is regarded as an air outlet chamber; when the air compressor is used as compressed air, the central position of the exhaust hole communicated with the sealed air chamber is an exhaust chamber, and the edge position of the air inlet hole communicated with the sealed air chamber is regarded as an air inlet chamber.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the gap is 0.01mm to 0.30 mm.
As right the utility model relates to an utilize the improvement of magnetic force sealed floating vortex device:
the device also comprises a gap adjustable device which is arranged on the movable scroll and/or the fixed scroll.
The utility model discloses an utilize permanent magnetic material's magnetic force to provide the partial or whole required axial force of vortex device that floats, when realizing that the vortex expander, compressor and vacuum pump move, decide the sealed of scroll axial contact for the mechanism of the frictional force minimizing that arouses by the axial force.
The utility model discloses utilize magnetic force to overcome vortex expander or compressor and lead actuating, deciding the scroll separating force at the during operation because gas pressure, prevent to produce the radial leakage between expander or the compressor scroll top that axial clearance and arouse, the bottom surface, reduce the work efficiency of expander or compressor, realized simultaneously moving, decide the minimizing of axial contact force between the scroll.
The utility model discloses introduce permanent magnetism axial force and just reduce, even cancel the frictional force between back pressure chamber piston and the base thrust bearing.
The utility model relates to an utilize magnetic force sealed floating vortex device's technical advantage to be:
1) the movable and fixed scrolls of the scroll expander or the compressor are ensured to be in contact sealing by magnetic force, so that the radial leakage between the top and the bottom of the scrolls of the scroll expander or the compressor is avoided, and the working efficiency of the scroll expander or the compressor is improved.
2) And the magnetic attraction is non-contact constraint force compared with the elastic force of the spring, so that friction does not exist, and friction heat generation and friction loss are reduced or avoided.
Drawings
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
FIG. 1 is a schematic view of a magnetic sealed scroll expander of the present invention;
fig. 2 is a schematic structural view for adjusting the magnitude of the magnetic force.
In the figure: 1. a generator housing; 2. a front balance weight; 3. fastening screws; 4. an eccentric shaft; 5. a front bearing; 8. a motor housing; 11. a middle balance weight; 12. a rear bearing; 13. a rear counterbalance; 14. a cross slip ring; 15. a moving scroll; 16. A steel ring; 21. fixed scroll; 22. a permanent magnet magnetic foot base; 23. an air inlet; 24. an exhaust hole; 25. a base; 26. sealing the air chamber; 27. an air intake chamber; 28. an exhaust chamber; 61. silicon steel lamination; 62. magnetic steel; 65. adjusting the telescopic rod; 151. An orbiting scroll element; 152. a movable scroll end plate; 211. a fixed scroll element; 212. a fixed scroll end plate; 221. and the permanent magnet is magnetic foot.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
The orbiting scroll 15 includes an orbiting scroll element 151 and an orbiting scroll end plate 152; the fixed scroll 21 includes a fixed scroll element 211 and a fixed scroll end plate 212, and the orbiting scroll element 151 and the fixed scroll element 211 are spiral or involute type. The orbiting scroll element 151 and the fixed scroll element 211 of the two conjugate spiral cylindrical sidewalls are engaged with each other and fixed to the respective orbiting scroll end plate 152 and the fixed scroll end plate 212. The orbiting scroll element 151 and the fixed scroll element 211 are intermeshed and form a line contact between the scroll element sidewalls. In operation, the portions of the orbiting and fixed scroll elements 151 and 211 that contact and separate from each other, and the orbiting and fixed scroll end plates 152 and 212 together form at least one sealed air chamber 26, an inlet chamber 27, and an outlet chamber 28. When the orbiting scroll 15 orbits (circularly translates) relative to the fixed scroll 21, the line of contact on the spiral sidewall moves along the sidewall, thereby changing the size of the sealed air chamber 26.
The fixed scroll end plate 212 is provided with an air inlet hole 23 and an air outlet hole 24 which are communicated with the sealed air chamber 26;
when the gas-liquid separator is used as an expansion gas, the central position of the air inlet hole 23 communicated with the sealed air chamber 26 is regarded as an air inlet chamber 27, and the edge position of the air outlet hole 24 communicated with the sealed air chamber 26 is regarded as an air outlet chamber 28; in the application as compressed gas, the center position where the exhaust hole 24 communicates with the sealed air chamber 26 is an exhaust chamber 28, and the edge position where the intake hole 23 communicates with the sealed air chamber is an intake chamber 27.
The movable scroll 15 drives the eccentric shaft 4 during the rotation, the base 25 is provided with a shaft hole and a rear bearing 12 is arranged in the shaft hole, and the eccentric shaft 4 rotates through the rear bearing 12 and the front bearing 5. One end of a motor of the vortex expander is regarded as a front end, one section of the vortex mechanism is regarded as a rear end, a front balance block 2 is arranged at the front end of an eccentric shaft 4, a rear balance block 13 is arranged at the rear end of the eccentric shaft 4, and a middle balance block 11 is arranged in the middle of the eccentric shaft 4. The base 25 is considered to support the motor and maintain the seal of the expander, and the generator housing 1 is also mounted outside the motor, mainly to ensure the seal of the expander and prevent gas leakage. The orbiting scroll 15 orbits around the fixed scroll 21 to rotate the eccentric shaft 4.
The top of the fixed scroll end plate 212 is provided with an annular groove, a permanent magnet magnetic foot base 22 is fixedly installed in the groove, and permanent magnet magnetic feet 221 (the number and the magnetic force of the permanent magnet magnetic feet are determined according to the magnitude of the separating force generated by gas expansion between the fixed scrolls) are uniformly distributed on the permanent magnet magnetic foot base 22. The permanent magnet foot base 22 is disposed around the outside of the fixed scroll element 211.
When the scroll expander is in operation, the top of the orbiting scroll element 151 abuts the bottom of the fixed scroll end plate 212, and the top of the fixed scroll element 211 abuts the bottom of the orbiting scroll end plate 152. The bottom of the movable scroll end plate 152 is also provided with a steel ring 16, the steel ring 16 is arranged outside the movable scroll element 151 in a surrounding mode, the steel ring 16 is made of magnetic conductive steel, the steel ring 16 is matched with the permanent magnet magnetic foot 221 and the permanent magnet magnetic foot base 22 for use, the axial length of the steel ring 16 is slightly smaller than that of the movable scroll element 151, the permanent magnet magnetic foot 221 and the permanent magnet magnetic foot base 22 are not in direct contact with the steel ring 16, and a gap of about 0.1mm is kept. The magnetic attraction between the two is controlled to be slightly larger than the axial separation force generated by the expansion of the medium (gas) when the expansion machine works, so that the top and bottom of the movable scroll 15 and the fixed scroll 21 are attached, and the internal air leakage between high and low pressure areas caused by the gap between the top and bottom of the movable scroll 15 and the fixed scroll 21 due to the axial separation is avoided.
Alternatively, the permanent magnet foot base 22 and the fixed scroll element 211 are mounted on the orbiting scroll end plate 152, and the steel ring 16 is mounted on the fixed scroll end plate 212.
The radial thickness of the steel ring 16 has a certain size difference with the total radial thickness of the permanent magnet magnetic foot 221 and the permanent magnet magnetic foot base 22; as shown in fig. 2, the radial thickness of the steel ring 16 is greater than the total radial thickness of the permanent magnet magnetic foot 221 and the permanent magnet magnetic foot base 22, and during the orbiting of the orbiting scroll 15, the permanent magnet magnetic foot 221 is always located inside the radial end faces of the steel ring 16 and the permanent magnet magnetic foot base 22. Of course, the radial thickness of the steel ring 16 may be smaller than the total radial thickness of the permanent magnet magnetic foot 221 and the permanent magnet magnetic foot base 22, and during the orbiting process of the orbiting scroll 15, the steel ring 16 is always located inside the radial end faces of the permanent magnet magnetic foot 221 and the permanent magnet magnetic foot base 22; the magnetic attraction force between the permanent magnet magnetic foot 221 and the steel ring 16 is ensured to be stable as much as possible.
The utility model discloses the expander adopts magnetic attraction to guarantee to move scroll 15 and decide between the scroll 21 contact sealed, improves scroll expander work efficiency. Compared with the spring force and other mechanical forces, the magnetic attraction force is a non-contact constraint force, and has no friction, and does not cause frictional heating, material abrasion and friction power loss.
If a gap adjusting device is arranged, the magnetic force can be adjusted by adjusting the gap between the permanent magnet magnetic foot 221 and the steel ring 16, and the gap adjusting device can be arranged on the movable scroll, the fixed scroll or both the movable scroll and the fixed scroll. Or not installed, according to the actual requirement. For example, the gap-adjustable device is an adjusting telescopic rod 65, the adjusting telescopic rod 65 penetrates through the fixed scroll end plate 212 from the lower surface of the fixed scroll end plate 212 and extends into the annular groove to be fixedly connected with the permanent magnet magnetic foot base 22, and the length of the adjusting telescopic rod 65 can be adjusted to adjust the height of the permanent magnet magnetic foot base 22, so that the gap between the permanent magnet magnetic foot 221 and the steel ring 16 is changed.
Finally, it is also noted that the above-mentioned list is only a few specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (9)
1. A floating type vortex device sealed by magnetic force comprises an orbiting scroll, a fixed scroll and an eccentric shaft, wherein the orbiting scroll comprises an orbiting scroll element and an orbiting scroll end plate; the fixed scroll comprises a fixed scroll element and a fixed scroll end plate, and the movable scroll element and the fixed scroll element are in a spiral shape or an involute shape; the top of the movable scroll element is abutted with the bottom of the fixed scroll end plate, and the top of the fixed scroll element is abutted with the bottom of the movable scroll end plate; the movable scroll is driven by the eccentric shaft, and the eccentric shaft drives the movable scroll element to do circular translation around the fixed scroll element; the contact and separation part between the movable scroll element and the fixed scroll element and the part between the movable scroll end plate and the fixed scroll end plate form at least one sealed air chamber together; the method is characterized in that:
the movable scroll end plate and the fixed scroll end plate are provided with magnetic devices for ensuring the axial contact and sealing of the top and bottom surfaces of the movable scroll and the fixed scroll;
the magnetic device comprises a permanent magnet magnetic foot, a permanent magnet magnetic foot base and a steel ring;
one of the fixed scroll end plate and the movable scroll end plate is provided with an annular groove, a permanent magnet magnetic foot base is fixedly arranged in the groove, and the permanent magnet magnetic feet are uniformly or non-uniformly distributed on the permanent magnet magnetic foot base; the other is provided with a steel ring;
the steel ring is matched with the permanent magnet magnetic foot and the permanent magnet magnetic foot base for use, and a gap is reserved between the permanent magnet magnetic foot and the permanent magnet magnetic foot base and the steel ring.
2. A floating scroll device sealed with a magnetic force as claimed in claim 1, wherein:
the permanent magnet magnetic foot base is arranged on the outer side of the fixed scroll element in a surrounding manner;
the steel ring is disposed around the outside of the orbiting scroll element.
3. A magnetically sealed floating scroll device as claimed in claim 2, wherein:
the radial thickness of the steel ring has size difference with the total radial thickness of the permanent magnet magnetic foot and the permanent magnet magnetic foot base;
the radial thickness of the steel ring is larger than the total radial thickness of the permanent magnet magnetic foot and the permanent magnet magnetic foot base, and the permanent magnet magnetic foot base are always positioned in the radial thickness area of the steel ring in the orbiting process of the orbiting scroll; or on the contrary, the radial thickness of the steel ring is smaller than the total radial thickness of the permanent magnet magnetic foot and the permanent magnet magnetic foot base, and the steel ring is always positioned in the total radial thickness area of the permanent magnet magnetic foot and the permanent magnet magnetic foot base in the orbiting process of the orbiting scroll.
4. A magnetically sealed floating scroll device as claimed in claim 3, wherein:
the steel ring is made of steel which can be attracted by a magnet;
the steel ring has an axial length less than an axial length of the orbiting scroll element.
5. A magnetically sealed floating scroll device as claimed in claim 4, wherein:
the quantity and the magnetic force of the permanent magnet magnetic feet are determined according to the magnitude of the separating force generated by the expansion of the gas between the movable scroll and the fixed scroll, and the magnetic attraction force between the permanent magnet magnetic feet and the steel ring is slightly larger than the separating force generated by the expansion of the medium when the expander works.
6. A magnetically sealed floating scroll device as claimed in claim 5, wherein:
the base is provided with a shaft hole, a bearing is arranged in the shaft hole, and the eccentric shaft is arranged on the base through the bearing; one end of a motor of the vortex expansion machine is regarded as a front end, and one section of the vortex mechanism is regarded as a rear end; the front end part of the eccentric shaft is provided with a front balance block, and the rear end part of the eccentric shaft is provided with a rear balance block.
7. A magnetically sealed floating scroll device as claimed in claim 6, wherein:
the fixed scroll end plate is provided with an air inlet and an air outlet which are communicated with the sealed air chamber;
when the gas expansion valve is used as expansion gas, the central position of the air inlet hole communicated with the sealed air chamber is regarded as an air inlet chamber, and the edge position of the air outlet hole communicated with the sealed air chamber is regarded as an air outlet chamber; when the air compressor is used as compressed air, the central position of the exhaust hole communicated with the sealed air chamber is an exhaust chamber, and the edge position of the air inlet hole communicated with the sealed air chamber is regarded as an air inlet chamber.
8. A magnetically sealed floating scroll device as claimed in claim 7, wherein:
the gap is 0.01mm to 0.30 mm.
9. A magnetically sealed floating scroll device as claimed in claim 8, wherein:
the device also comprises a gap adjustable device which is arranged on the movable scroll and/or the fixed scroll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791211.5U CN214660824U (en) | 2020-11-26 | 2020-11-26 | Floating vortex device sealed by magnetic force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791211.5U CN214660824U (en) | 2020-11-26 | 2020-11-26 | Floating vortex device sealed by magnetic force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660824U true CN214660824U (en) | 2021-11-09 |
Family
ID=78469969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022791211.5U Active CN214660824U (en) | 2020-11-26 | 2020-11-26 | Floating vortex device sealed by magnetic force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660824U (en) |
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2020
- 2020-11-26 CN CN202022791211.5U patent/CN214660824U/en active Active
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