WO2014117746A1

WO2014117746A1 - Rotor seal structure

Info

Publication number: WO2014117746A1
Application number: PCT/CN2014/071841
Authority: WO
Inventors: 刘邦健
Original assignee: Lio Pang-Chian
Priority date: 2013-01-31
Filing date: 2014-01-30
Publication date: 2014-08-07
Also published as: CN103968076B; TWI532938B; TW201432183A; CN103968076A

Abstract

A rotor seal structure (10), comprising a rotor (11), at least one first seal sheet (14), and at least one abutting piece (151, 152); the rotor is provided with at least one side groove (111, 112); each side groove (111, 112) is provided with an axial surface (115), a peripheral surface (116), and an inclined surface (117); the axial surface (115) is longer than the peripheral surface (116); the inclined surface (117) is arranged between the axial surface (115) and the peripheral surface (116); the at least one first seal sheet (14) is disposed between at least one side surface (113) of the rotor (11) and the casing (12); the at least one abutting piece (151, 152) is disposed in the at least one side groove (111, 112) of the rotor (11); when the rotor (11) rotates, the at least one abutting piece (151, 152) moves along the inclined surface (117) to the peripheral surface (116) under centrifugal force, so as to press the at least one first seal sheet (14) against the casing (12). The rotor seal structure (10) can effectively seal a gap between the rotor (11) and the casing (12).

Description

Rotor seal structure

Technical field

The present invention relates to a rotor seal structure. Background technique

Between the existing rotor and the housing, it is difficult to rotate smoothly due to the size relationship, and the seal can be well. Because if the rotor can rotate smoothly in the casing and must maintain a certain gap with the casing, the gap will make the rotor and the casing less sealed and cannot be applied to the compression member or the like.

Therefore, an innovative and progressive rotor sealing structure is provided to solve the above problems. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotor sealing structure capable of effectively sealing a gap between a rotor and a casing to ensure sealing between the rotor and the casing.

The rotor sealing structure of the present invention comprises: a rotor, at least one first sealing sheet and at least one abutting member. The rotor has at least one side groove disposed on at least one side of the rotor, each side groove having an axial surface, a peripheral surface and a slope, the axial surface being close to an axis of the rotor The peripheral surface is close to the periphery of the rotor, and the length of the axial surface is greater than the length of the peripheral surface, and the inclined surface is disposed between the axial surface and the peripheral surface. At least one first sealing sheet is disposed between at least one side of the rotor and a casing. The at least one abutting member is disposed in the at least one side groove. When the rotor rotates, the at least one abutting member moves along the inclined surface to the peripheral surface due to the centrifugal force, and the at least one first sealing piece is abutted to the case.

In a preferred embodiment, at least one second sealing sheet is further disposed between the at least one first sealing sheet and at least one side of the rotor.

In a preferred embodiment, the at least one first sealing sheet and the at least one second sealing sheet are made of an elastic material. In a preferred embodiment, the at least one second sealing sheet comprises at least one hollow hole disposed in the corresponding at least one side groove.

In a preferred embodiment, the length of the at least one abutting member is the same as the length of the axial surface.

The invention provides a rotor sealing structure, comprising: a rotor, at least one first sealing sheet and at least one sealing slider. The rotor has at least one axial groove disposed in the axial direction of the rotor at a periphery of the rotor. The at least one first sealing sheet is disposed between the at least one side of the rotor and a casing, and the at least one first sealing sheet includes There is one less first slot, and the first slider slot is disposed corresponding to at least one axial groove. At least one sealing slider is disposed in the at least one axial groove. When the rotor rotates, the at least one sealing slider is moved by the partial sealing slider out of the at least one axial groove by the centrifugal force to abut the casing.

In a preferred embodiment, the at least one first sealing sheet and the at least one second sealing sheet are made of an elastic material. In a preferred embodiment, the at least one second sealing sheet includes a second slider slot, and the second slider slot is disposed to correspond to at least one axial groove.

In a preferred embodiment, each sealing block includes a slider body, at least one sliding pin and at least one sealing piece, the at least one sliding pin movably connecting the slider body and the at least one sealing piece, In a state in which the rotor is rotated, the at least one side seal piece moves in the axial direction of the rotor to abut against the casing due to centrifugal force.

In a preferred embodiment, each sealing slider further includes at least one elastic sealing sheet disposed between the at least one sealing sheet and the slider body, and the at least one sliding pin is movably connected to the a slider body, the at least one elastic sealing sheet and the at least one sealing sheet.

In a preferred embodiment, the at least one first sealing sheet further includes a flat portion and a convex portion disposed at a periphery of the periphery of the first sealing sheet.

Therefore, the centrifugal force is used to move the abutting member against the at least one first sealing piece to the casing, and the sealing between the at least one first sealing piece and the casing may be strengthened; or the centrifugal force is used to make the at least one sealing slip The block abuts the housing to reinforce the seal between the rotor and the housing. DRAWINGS

1A is a schematic axial cross-sectional view showing a rotor sealing structure according to a first embodiment of the present invention;

1B is a schematic radial cross-sectional view showing a rotor sealing structure according to a first embodiment of the present invention;

2 is a schematic axial cross-sectional view showing a rotor sealing structure when the rotor of the first embodiment of the present invention is rotated; FIG. 3 is a schematic axial cross-sectional view showing the rotor sealing structure of the second embodiment of the present invention;

4 is a schematic axial cross-sectional view showing a rotor sealing structure when the rotor of the second embodiment of the present invention is rotated; FIG. 5 is a schematic axial cross-sectional view showing the rotor sealing structure of the third embodiment of the present invention;

Figure 6 is a schematic cross-sectional view showing the radial direction of the rotor sealing structure of the third embodiment of the present invention;

Figure 7 is a schematic cross-sectional view showing the rotor sealing structure of the rotor of the third embodiment of the present invention; Figure 8 is a schematic view showing the first sealing sheet of the rotor sealing structure of the third embodiment of the present invention;

Figure 9 is a cross-sectional view showing the first sealing sheet of the rotor sealing structure of the third embodiment of the present invention taken along the line AA; Figure 10A is a schematic view showing a sealing slider of a rotor sealing structure according to a third embodiment of the present invention;

10B is a cross-sectional view showing a sealing slider of a rotor sealing structure according to a third embodiment of the present invention;

Figure 11 is a schematic axial cross-sectional view showing the rotor seal structure when the rotor of the third embodiment of the present invention is rotated.

Component symbol description

10...The rotor sealing structure of the first embodiment of the present invention 11 ...the rotor

12 ... housing 13 ... second sealing sheet

14 ... first sealing sheet 17 ... second sealing sheet

20...The rotor seal structure of the third embodiment of the present invention 21 ...rotor

23 ... second sealing sheet 24 ... first sealing sheet

...seal sliders 111, 112 - ... side grooves

113 ... side 115 ... axial surface

116 ... ... peripheral surface 117 ... bevel

118 ... axis 119 ... periphery

151, 152- ... abutting pieces 171, 172 - ... hollow holes

211, 212- ... axial groove 213 ... side

218 ... axis 241, 242 - ... first slider slot

243 ... flat portion 244 ... raised portion

251 ... slider body 252 ... side sealing sheet

253 ... elastic sealing piece 254 ... sliding pin

22 ... housing specific embodiment

Referring to Fig. 1A, there is shown an axial sectional view of a rotor sealing structure according to a first embodiment of the present invention. Referring to Fig. 1B, there is shown a radial sectional view of a rotor sealing structure according to a first embodiment of the present invention. Referring to FIG. 1A and FIG. 1B, the rotor sealing structure 10 of the first embodiment of the present invention includes a rotor 11, at least a first sealing sheet 14, and at least one abutting member 151 and an abutting member 152.

The rotor 11 has at least one side groove 111 and a side groove 112 disposed on at least one side surface 113 of the rotor 11. Each side groove has an axial surface, a peripheral surface and a slope. Taking the side groove 111 as an example, the side groove 111 has an axial surface 115, a peripheral surface 116 and a slope 117. The axial surface 115 is adjacent to an axial center 118 of the rotor 11. The peripheral surface 116 is adjacent to the periphery 119 of the rotor 11. The length of the axial surface 115 is greater than the length of the peripheral surface 116. The inclined surface 117 is disposed on the axial center. Between the face 115 and the peripheral face 116. That is, The slope 117 is gradually inclined from the axial surface 115 to the peripheral surface 116 toward the side surface 113.

The at least one first sealing sheet 14 is disposed between at least one side 113 of the rotor 11 and a casing 12. In the present embodiment, the two first sealing sheets 14 are disposed between the two sides of the rotor 11 and the casing 12.

The at least one abutting member 151 and the abutting member 152 are disposed in the at least one side groove 111 and the side groove 112. Taking the abutting member 151 as an example, when the rotor 11 is stationary, the abutting member 151 is disposed on the axial surface 115 of the side groove 111, and preferably, the length of the abutting member 151 is opposite to the axial center. The length of the face 115 is the same, or the length of the abutment 151 is less than the length of the axial face 115. When the rotor 11 rotates, the abutting member 151 moves along the inclined surface 117 to the peripheral surface 116 by centrifugal force to abut the at least one first sealing sheet 14 to the casing 12, as shown in FIG.

Therefore, the centrifugal force is applied to move the abutting member to the peripheral surface to abut the at least one first sealing sheet 14 to the casing 12, and the seal between the at least one first sealing sheet and the casing can be enhanced.

The rotor sealing structure 10 of the first embodiment of the present invention further includes at least one second sealing sheet 13 disposed between the first sealing sheet 14 and at least one side 113 of the rotor 11. In the present embodiment, the second and second sealing sheets 13 are respectively disposed between the two first sealing sheets 14 and the two side faces 113 of the rotor 11. Preferably, the at least one first sealing sheet and the at least one second sealing sheet are made of an elastic material to provide a basic pressure for sealing, and may have a similar O-ring and a spring function to fill at least one side of the rotor and the housing. Space between.

Referring to Fig. 3, there is shown an axial cross-sectional view of a rotor sealing structure according to a second embodiment of the present invention. Referring to Figure 4, there is shown an axial cross-sectional view of the rotor sealing structure when the rotor of the second embodiment of the present invention is rotated. Referring to FIG. 3 and FIG. 4, the rotor sealing structure of the second embodiment of the present invention is different from the rotor sealing structure of the first embodiment in that the at least one second sealing sheet 17 of the rotor sealing structure of the second embodiment of the present invention includes at least A hollow hole 171 and a hollow hole 172 are disposed in the corresponding at least one side groove 111 and the side groove 112. When the rotor 11 rotates, the abutting member 151 moves along the inclined surface 117 to the peripheral surface 116 due to the centrifugal force, and passes through the hollow hole 171 and the hollow hole 172 to directly abut the first sealing piece 14 to the casing. 12. Therefore, the seal between the at least one first sealing sheet and the casing can be enhanced.

Referring to Fig. 5, there is shown an axial sectional view of a rotor sealing structure according to a third embodiment of the present invention. Referring to Fig. 6, there is shown a radial sectional view of a rotor sealing structure according to a third embodiment of the present invention. Referring to Figures 5 and 6, the rotor seal structure 20 of the third embodiment of the present invention includes a rotor 21, at least a first sealing sheet 24, and at least one sealing slider 25 and a sealing slider 26. The rotor 21 has at least one axial groove 211 and an axial groove 212 disposed at the periphery of the rotor 21 in the axial direction of the rotor 21. In the present embodiment, the rotor 21 has a biaxial groove 211 and an axial groove 212.

Referring to FIG. 8, there is shown a schematic view of a first sealing sheet of a rotor sealing structure according to a third embodiment of the present invention; 9. A cross-sectional view showing a first sealing sheet of a rotor sealing structure according to a third embodiment of the present invention. With reference to FIG. 5, FIG. 8 and FIG. 9, at least one first sealing sheet 24 is disposed between at least one side 213 of the rotor 21 and a casing 22, and the at least one first sealing sheet 24 includes at least one first sliding sheet. The block groove 241 and the first slider groove 242 are disposed corresponding to the at least one axial groove 211 and the axial groove 212. In this embodiment, the at least one first sealing sheet 24 further includes a flat portion 243 and a convex portion 244 disposed on a peripheral periphery of the first sealing sheet 24 and an axis relative to the rotor 21 The peripheral periphery of the core 218 is to reduce the contact area with the housing 22.

Referring to Figure 7, there is shown a radial cross-sectional view of a rotor seal structure when the rotor of the third embodiment of the present invention is rotated. At least one sealing slider 25 and a sealing slider 26 are disposed in the at least one axial groove 211 and the axial groove 212. When the rotor 21 rotates, the at least one sealing slider 25 and the sealing slider 26 are subjected to centrifugal force. The partial sealing slider 25 and the sealing slider 26 move out of the at least one axial groove 211 and the axial groove 212, that is, the rotor 21 protrudes from the casing 22 to seal the rotor 21 and the casing. 22 spaces.

Referring to FIG. 5 again, the rotor sealing structure 20 of the third embodiment of the present invention further includes at least one second sealing sheet 23 disposed between the first sealing sheet 24 and at least one side 213 of the rotor 21. In the present embodiment, the second second sealing sheets 23 are respectively disposed between the two first sealing sheets 24 and the two side faces 213 of the rotor 21. Preferably, the at least one first sealing sheet and the at least one second sealing sheet are made of an elastic material to provide a basic pressure for sealing, and may have a similar O-ring and a spring function to fill at least one side of the rotor and the housing. Space between. In this embodiment, the at least one second sealing sheet 23 includes a second slider groove (not shown) disposed corresponding to the at least one axial groove 211 and the axial groove 212.

Referring to Fig. 10A, there is shown a schematic view of a sealing slider of a rotor sealing structure according to a third embodiment of the present invention. Referring to Fig. 10B, there is shown a schematic sectional view of a sealing slider of a rotor sealing structure according to a third embodiment of the present invention. Referring to Figure 11, there is shown an axial cross-sectional view of a rotor seal structure when the rotor of the third embodiment of the present invention is rotated. Referring to FIG. 10A, FIG. 10B and FIG. 11, each sealing slider includes a slider body, at least one sliding pin and at least one sealing sheet. Taking the sealing slider 25 as an example, the sealing slider 25 includes a slider body 251, two side sealing sheets 252, and two sliding pins 254. The two sliding pins 254 are movably coupled to the slider body 251 and the two side sealing sheets 252. When the rotor 21 rotates, the two side sealing sheets 252 are moved along the axial direction of the rotor 21 by the centrifugal force to abut the housing 22 to The sealing with the housing 22 is reinforced.

In this embodiment, each sealing slider further includes at least one elastic sealing sheet disposed between the at least one sealing sheet and the slider body. Taking the sealing slider 25 as an example, the two elastic sealing sheets 253 are disposed between the two side sealing sheets 252 and the slider body 251, and the two sliding pins 254 are movably connected to the slider body 251, the two elastic sealing sheets 253 and two. Side sealing sheet 252.

The rotor seal structure 20 of the third embodiment of the present invention may further include the abutment of the rotor seal structure 10 of the first embodiment. The member 151, the abutting member 152 and the side groove 111, the side groove 112 and the like are configured to strengthen the seal between the at least one first sealing sheet and the casing. The rotor sealing structure 10 of the first embodiment of the present invention may further include a sealing slider 25, a sealing slider 26, an axial groove 211, an axial groove 212, and the like of the rotor sealing structure 20 of the third embodiment to seal a gap between the rotor and the housing.

The above embodiments are merely illustrative of the principles of the invention and its effects, and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the claims.

Claims

Claim

A rotor sealing structure, comprising:

a rotor having at least one side groove disposed on at least one side of the rotor, each side groove having an axial surface, a peripheral surface and a slope, the axial surface being close to the rotor An axial center, the peripheral surface is close to the periphery of the rotor, the length of the axial surface is greater than the length of the peripheral surface, the inclined surface is disposed between the axial surface and the peripheral surface;

At least one first sealing sheet disposed between at least one side of the rotor and a casing; and

At least one abutting member is disposed in the at least one side groove. In a state in which the rotor rotates, the at least one abutting member moves along the inclined surface to the peripheral surface due to centrifugal force, and the at least one first is abutted Sealing the sheet to the housing.

The rotor sealing structure according to claim 1, further comprising at least one second sealing sheet disposed between the at least one first sealing sheet and at least one side of the rotor.

The rotor sealing structure according to claim 2, wherein the at least one first sealing sheet and the at least one second sealing sheet are made of an elastic material.

The rotor sealing structure according to claim 2, wherein the at least one second sealing sheet comprises at least one hollow hole disposed in the corresponding at least one side groove.

The rotor seal structure according to claim 1, wherein the length of the at least one abutting member is the same as the length of the axial surface.

6. A rotor sealing structure, characterized in that it comprises:

a rotor having at least one axial groove disposed along a circumference of the rotor in an axial direction of the rotor;

At least one first sealing piece is disposed between at least one side of the rotor and a casing, the at least one first sealing piece includes at least one first sliding groove, and the first sliding groove is disposed at least one Axial groove; and

At least one sealing slider is disposed in the at least one axial groove. In a state in which the rotor rotates, the at least one sealing slider moves the partial sealing groove out of the at least one axial groove due to the centrifugal force, and the top is abutted The housing.

The rotor sealing structure according to claim 6, further comprising at least one second sealing sheet disposed between the at least one first sealing sheet and at least one side of the rotor.

The rotor sealing structure according to claim 7, wherein the at least one first sealing sheet and the at least one second sealing sheet are made of an elastic material.

The rotor sealing structure according to claim 7, wherein the at least one second sealing piece comprises a second sliding groove, and the second sliding groove is disposed corresponding to the at least one axial groove.

The rotor sealing structure according to claim 6 , wherein each sealing slider comprises a slider body, at least one sliding pin and at least one sealing piece, wherein the at least one sliding pin is movably connected to the slider The body and the at least one sealing piece, in a state in which the rotor is rotated, the at least one sealing piece is moved in the axial direction of the rotor to abut against the casing due to centrifugal force.

The rotor sealing structure according to claim 10, wherein each of the sealing blocks further comprises at least one elastic sealing piece, the elastic sealing piece being disposed between the at least one sealing piece and the sliding block body, And the at least one sliding pin is movably connected to the slider body, the at least one elastic sealing sheet and the at least one sealing sheet.

The rotor sealing structure according to claim 6, wherein the at least one first sealing sheet further comprises a flat portion and a convex portion, the convex portion being disposed at a periphery of the periphery of the first sealing sheet.