Electromagnetic controllable anti-rotation mechanism of oil-free scroll compressor

Abstract

The present application belongs to the field of oil-free scroll compressor, and particularly relates to an electromagnetic controllable anti-self-rotation mechanism of an oil-free scroll compressor. The present application comprises a bracket in the shape of a groove, characterized in that: a movable scroll is arranged above the bracket, and a bearing blind hole is arranged on the bottom surface of the movable scroll; a bracket hole is arranged on the bracket at a position corresponding to the bearing blind hole in the middle, a plurality of electromagnet seats are arranged around the bracket hole, and a plurality of eddy current sensor seats are also arranged around the bracket hole; one electromagnet body is arranged on each electromagnet seat; one eddy current sensor body is arranged on each eddy current sensor seat; a groove is arranged below the movable scroll, and an armature is fixed in the groove; the electromagnet body, the eddy current sensor body and the armature are arranged in position cooperation. The present application can output clean high-pressure gas without oil.

Description

Technical Field

[0001] This invention belongs to the field of oil-free scroll compressors, and specifically relates to an electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor. Background Technology

[0002] Oil-free scroll compressors are irreplaceable key equipment in fields such as food, medical, pharmaceutical, aerospace, and precision electronics. In the field of oil-free scroll compressors, the function of the anti-rotation mechanism is to prevent the moving scroll from rotating under the force of the gas, thus improving the reliability of the scroll compressor. However, traditional oil-free scroll compressors still have shortcomings in outputting clean, high-pressure gas because the anti-rotation mechanism requires oil lubrication, making it impossible to achieve a truly oil-free scroll compressor.

[0003] Traditional oil-free scroll compressors use self-lubricating bearings instead of oil-lubricated bearings. A coating made of self-lubricating material is sprayed between the anti-rotation mechanism and the frame to achieve oil-free lubrication. However, this coating has problems with friction and heat generation during use.

[0004] To address the above issues, there is an urgent need for an alternative that can solve the problems of traditional scroll compressors requiring oil lubrication for their anti-rotation mechanism, which cannot provide clean high-pressure gas, and also resolve the issues of friction and heat generation. Summary of the Invention

[0005] The purpose of this invention is to provide an electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor, which solves the problem that traditional scroll compressor anti-rotation mechanisms require oil lubrication and cannot provide clean high-pressure gas, as well as the problems of friction and heat generation.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] An oil-free scroll compressor electromagnetically controllable anti-rotation mechanism includes a groove-shaped support, characterized in that: a moving scroll is provided above the support (2), and a bearing blind hole is provided on the bottom surface of the moving scroll; a support hole is provided in the middle of the support corresponding to the bearing blind hole, and several electromagnet seats are provided around the support hole, and several eddy current sensor seats are also provided around the support hole; an electromagnet body is provided on each electromagnet seat; an eddy current sensor body is provided on each eddy current sensor seat; a groove is provided under the moving scroll, and an armature is fixed in the groove; the positions of the electromagnet body, the eddy current sensor body and the armature are arranged in coordination.

[0008] Furthermore, two armatures are provided, with the first armature and the second armature arranged opposite each other along the center of the support and the moving scroll.

[0009] Furthermore, four electromagnet bases are provided, wherein the first and second electromagnet bases are arranged side by side, and the third and fourth electromagnet bases are arranged symmetrically side by side with the first and second electromagnet bases along the center of the support.

[0010] Furthermore, the first electromagnet body is disposed on the first electromagnet base, and the fourth electromagnet body is disposed on the fourth electromagnet base. The first electromagnet body and the fourth electromagnet body cooperate to form a first differential electromagnet. The second electromagnet body is disposed on the second electromagnet base, and the third electromagnet body is disposed on the third electromagnet base. The second electromagnet body and the third electromagnet body cooperate to form a second differential electromagnet. The two sets of differential electromagnets are symmetrically arranged along the center of the support and the moving scroll.

[0011] Furthermore, the side wall of the bracket is provided with a first outlet hole and a second outlet hole for the eddy current sensor.

[0012] Furthermore, two eddy current sensor seats are provided. The first eddy current sensor seat and the second eddy current sensor seat are arranged opposite each other in the same plane along the center of the support. The first eddy current sensor seat is provided with a first eddy current sensor body, and the second eddy current sensor seat is provided with a second eddy current sensor body.

[0013] Furthermore, the first armature is parallel to the first electromagnet body and the second electromagnet body disposed on the support and maintains a certain air gap; the second armature is parallel to the third electromagnet body and the fourth electromagnet body disposed on the support and maintains a certain air gap; the eddy current sensor base is disposed parallel to the second armature and has a certain air gap with the second armature; the eddy current sensor body is disposed parallel to the second armature and has a certain air gap with the second armature.

[0014] Furthermore, the bottom surface of the moving scroll is provided with a bearing blind hole, and the eccentric shaft is connected from the bracket hole of the bracket to the bearing blind hole to fix the moving scroll.

[0015] The beneficial effects of the present invention.

[0016] This invention overcomes the shortcomings of traditional anti-rotation methods. It does not require oil lubrication or the application of a self-lubricating coating during operation, and it does not need to consider the impact of frictional heat on the self-lubricating coating. It can output clean, oil-free high-pressure gas. Attached Figure Description

[0017] Figure 1 This is an exploded view of the present invention.

[0018] Figure 2 This is a diagram of the internal structure of the present invention.

[0019] Figure 3This is an isometric view of the present invention.

[0020] Figure 4 This is a bottom structural diagram of the moving scroll and armature of the present invention.

[0021] Figure 5 This is a front view of the bracket of the present invention.

[0022] Figure 6 This is a top view of the bracket of the present invention.

[0023] Figure 7 This is a schematic diagram of the electromagnet of the present invention; The numbers in the diagram are explained as follows: 1-First eddy current sensor body, 2-Bracket, 3-First armature, 4-First electromagnet body, 5-First electromagnet base, 6-Second electromagnet body, 7-Second electromagnet base, 8-Second eddy current sensor base, 9-Second eddy current sensor body, 10-Third electromagnet body, 11-Third electromagnet base, 12-Fourth electromagnet base, 13-Fourth electromagnet body, 14-Second armature, 15-First eddy current sensor base, 16-First wire outlet, 17-Second wire outlet, 18-Moving vortex. Detailed Implementation

[0024] like Figure 1-7 This invention includes a groove-shaped support 2, characterized in that: a moving vortex 18 is provided above the support 2, and a bearing blind hole is provided on the bottom surface of the moving vortex; a support hole is provided in the middle of the support 2 corresponding to the bearing blind hole, and several electromagnet seats are provided around the support hole, and several eddy current sensor seats are also provided around the support hole; an electromagnet body is provided on each electromagnet seat; an eddy current sensor body is provided on each eddy current sensor seat; a groove is provided under the moving vortex 18, and an armature is fixed in the groove; the positions of the electromagnet body, the eddy current sensor body, and the armature are arranged in a coordinated manner.

[0025] Furthermore, two armatures are provided, with the first armature 3 and the second armature 14 arranged opposite each other along the center of the support 2 and the moving scroll 18.

[0026] Furthermore, four electromagnet seats are provided, wherein the first electromagnet seat 5 and the second electromagnet seat 7 are arranged side by side, and the third electromagnet seat 11 and the fourth electromagnet seat 12 are arranged symmetrically side by side with the first electromagnet seat 5 and the second electromagnet seat 7 along the center of the support 2.

[0027] Furthermore, the first electromagnet body 4 is disposed on the first electromagnet base 5, and the fourth electromagnet body 13 is disposed on the fourth electromagnet base 12. The first electromagnet body 4 and the fourth electromagnet body 13 cooperate to form a first differential electromagnet; the second electromagnet body 6 is disposed on the second electromagnet base 7, and the third electromagnet body 10 is disposed on the third electromagnet base 11. The second electromagnet body 6 and the third electromagnet body 10 cooperate to form a second differential electromagnet; the two sets of differential electromagnets are symmetrically arranged along the center of the support 2 and the moving scroll 18.

[0028] Furthermore, the side wall of the bracket 2 is provided with a first outlet hole 16 and a second outlet hole 17 for the eddy current sensor.

[0029] Furthermore, two eddy current sensor seats are provided. The first eddy current sensor seat 15 and the second eddy current sensor seat 8 are arranged opposite each other in the same plane along the center of the support 2. The first eddy current sensor seat 15 is provided with a first eddy current sensor body 1, and the second eddy current sensor seat 8 is provided with a second eddy current sensor body 9.

[0030] Furthermore, the first armature 3 is parallel to the first electromagnet body 4 and the second electromagnet body 6 disposed on the support 2 and maintains a certain air gap; the second armature 14 is parallel to the third electromagnet body 10 and the fourth electromagnet body 13 disposed on the support 2 and maintains a certain air gap; the eddy current sensor seat is arranged parallel to the second armature 14 and has a certain air gap with the second armature 14; the eddy current sensor body is arranged parallel to the second armature 14 and has a certain air gap with the second armature 14.

[0031] Furthermore, the bottom surface of the moving scroll 18 is provided with a bearing blind hole, and the eccentric shaft is connected from the bracket hole of the bracket 2 to the bearing blind hole to fix the moving scroll 18.

[0032] Specifically, an eccentric block and a bearing are provided in the bearing blind hole; a bearing is provided in the bracket hole.

[0033] When the moving vortex 18 is working normally, it makes a planar circular motion. When the first eddy current sensor body 1 and the second eddy current sensor body 9 detect a change in the air gap between themselves and the second armature 14, the input current of the first differential electromagnet and the second differential electromagnet will change accordingly, generating electromagnetic forces with certain differences. The electromagnetic forces attract the first armature 3 and the second armature 14 to constrain the moving vortex 18 and prevent it from rotating.

[0034] The anti-rotation mechanism has two eddy current sensor outlet holes on the side wall of the bracket 2. The first outlet hole 16 is the outlet hole of the first eddy current sensor body 1; the second outlet hole 17 is the outlet hole of the second eddy current sensor body 9; the above outlet holes are in the same plane as the eddy current sensor body.

[0035] like Figure 1 and Figure 2 The diagram shows the structure of the electromagnetically controllable anti-rotation mechanism of an oil-free scroll compressor. The first armature 3, at its end furthest from the center of the support 2, has a first electromagnet body 4 and a second electromagnet body 6. The two electromagnets are on the same straight line, parallel to the first armature 3, and have a certain air gap. The second armature 14, near the center of the support 2, has two eddy current sensors. The first eddy current sensor body 1 and the second eddy current sensor body 9 are on the same straight line, parallel to the second armature 14, and have a certain air gap. The second armature 14, at its end furthest from the center of the support 2, has a third electromagnet body 10 and a fourth electromagnet body 13. The two electromagnets are on the same straight line, parallel to the second armature 14, and have a certain air gap.

[0036] The first electromagnet body 4 and the fourth electromagnet body 13 constitute the first differential electromagnet, and the second electromagnet body 6 and the third electromagnet body 10 constitute the second differential electromagnet. When the moving scroll 18 rotates under the action of gas force, the air gap between the second armature 14 and the first eddy current sensor body 1 and the second eddy current sensor body 9 is different from the air gap during normal operation of the oil-free scroll compressor. Under the action of the controller, the input current of the electromagnet changes. At the end with a larger air gap, the input current of the electromagnet increases, which increases the electromagnetic force and the attraction force of the electromagnet on the armature. At the end with a smaller air gap, the input current of the electromagnet decreases, which decreases the electromagnetic force and the attraction force of the electromagnet on the armature. By controlling the magnitude of the input current of the two sets of differential electromagnets, the magnitude of the attraction force of the electromagnet on the armature is controlled, thereby achieving the purpose of constraining the moving scroll 18 and preventing the moving scroll 18 from rotating under the action of gas force.

[0037] The example shown in the attached figure relates to an electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor. The bracket 2 has multiple grooves symmetrically machined along its center (taking six as an example). These grooves are used to fix the first electromagnet body 4, the second electromagnet body 6, the third electromagnet body 10, the fourth electromagnet body 13, the first eddy current sensor seat 15, and the second eddy current sensor seat 8, respectively. The first electromagnet body 4 and the fourth electromagnet body 13 constitute the first differential electromagnet, and the second electromagnet body 6 and the third electromagnet body 10 constitute the second differential electromagnet. Two grooves at the bottom of the moving scroll 18 are used to fix the first armature 3 and the second armature 14. Because the electromagnets, eddy current sensors, and armatures are symmetrically arranged, the real-time monitoring of the air gap between the second armature 14 and the two eddy current sensors by the two eddy current sensors, and the electromagnetic force exerted by the first and second differential electromagnets on the first armature 3 and the second armature 14, can effectively constrain the moving scroll 18 and prevent it from rotating.

[0038] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

Claims

1. An electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor, comprising a groove-shaped support (2), characterized in that: A moving vortex (18) is provided above the support (2), and a bearing blind hole is provided on the bottom surface of the moving vortex; the support (2) has a support hole in the middle corresponding to the bearing blind hole, and several electromagnet seats are provided around the support hole, and several eddy current sensor seats are also provided around the support hole; an electromagnet body is provided on each electromagnet seat; an eddy current sensor body is provided on each eddy current sensor seat; a groove is provided under the moving vortex (18), and an armature is fixed in the groove; the positions of the electromagnet body, the eddy current sensor body and the armature are arranged in coordination; The armature is provided in two parts, with the first armature (3) and the second armature (14) arranged opposite each other along the center of the support (2) and the moving scroll (18); The electromagnet base is provided in four places, of which the first electromagnet base (5) and the second electromagnet base (7) are arranged side by side, and the third electromagnet base (11) and the fourth electromagnet base (12) are arranged symmetrically with the first electromagnet base (5) and the second electromagnet base (7) along the center of the support (2). The first electromagnet body (4) is set on the first electromagnet base (5), and the fourth electromagnet body (13) is set on the fourth electromagnet base (12). The first electromagnet body (4) and the fourth electromagnet body (13) cooperate to form the first differential electromagnet; the second electromagnet body (6) is set on the second electromagnet base (7), and the third electromagnet body (10) is set on the third electromagnet base (11). The second electromagnet body (6) and the third electromagnet body (10) cooperate to form the second differential electromagnet; the two sets of differential electromagnets are symmetrically arranged along the center of the support (2) and the moving vortex (18).

2. The electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor according to claim 1, characterized in that: The bracket (2) has a first outlet hole (16) and a second outlet hole (17) for an eddy current sensor on its side wall.

3. The electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor according to claim 1, characterized in that: Two eddy current sensor seats are provided. The first eddy current sensor seat (15) and the second eddy current sensor seat (8) are arranged opposite each other in the same plane along the center of the support (2). The first eddy current sensor seat (15) is provided with a first eddy current sensor body (1), and the second eddy current sensor seat (8) is provided with a second eddy current sensor body (9).

4. The electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor according to claim 1, characterized in that: The first armature (3) is parallel to the first electromagnet body (4) and the second electromagnet body (6) set on the bracket (2) and maintains a certain air gap; the second armature (14) is parallel to the third electromagnet body (10) and the fourth electromagnet body (13) set on the bracket (2) and maintains a certain air gap; the eddy current sensor seat is set parallel to the second armature (14) and has a certain air gap with the second armature (14); the eddy current sensor body is set parallel to the second armature (14) and has a certain air gap with the second armature (14).

5. The electromagnetically controllable anti-rotation mechanism for an oil-free scroll compressor according to claim 1, characterized in that: The bottom surface of the moving scroll (18) is provided with a bearing blind hole, and the eccentric shaft is connected from the bracket hole of the bracket (2) to the bearing blind hole to fix the moving scroll (18).

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