Ceramic seals for rotary engines

Abstract

The present invention discloses a ceramic sealing device for a rotary engine, comprising a first ceramic sealing plate, a second ceramic sealing plate and a plurality of sealing springs; the first ceramic sealing plate and the second ceramic sealing plate are both rectangular and have the same structure, the first ceramic sealing plate comprises a ceramic plate and a movable plate, the ceramic plate is a right-angled trapezoid, the bottom of the ceramic plate is one length of the first ceramic sealing plate, and the movable plate is a right-angled triangle; in the installed state: the hypotenuse of the ceramic plate and the movable plate slides in contact, and the other length of the first ceramic sealing plate is sequentially spaced along the direction of the movable plate to form a spring abutment position; the second ceramic sealing plate rotates 180° along the direction of its length and then slides and fits against the first ceramic sealing plate, and a plurality of sealing springs abut against the spring installation position. The structure of the present invention is convenient and compact, and the design is reasonable. It can improve the sealing effect to a certain extent and increase the life of the sealed component, and has good practical significance.

Description

Technical Field

[0001] The present invention belongs to the technical field of ceramic seals, and in particular relates to a ceramic sealing device for a rotary engine. Background Art

[0002] The rotary engine's motion is characterized by simultaneous orbital movement of the rotor's center around the output shaft and rotation around its own center. As the rotor rotates, an internal gear centered on the rotor's center meshes with a gear centered on the output shaft. The gear is fixed to the cylinder block and does not rotate. The rotor divides the cylinder into three independent chambers, each of which sequentially completes intake, compression, power generation, and exhaust. For each complete rotation of the rotor, the engine ignites and generates power three times. Due to this dynamic relationship, the output shaft rotates at three times the rotor's speed. This significantly increases engine efficiency. However, the sealing plates in the rotary engine are in constant line contact with the cylinder block, and the point of contact between the sealing plates and the cylinder block constantly changes. Therefore, the three combustion chambers are not completely isolated (sealed), and the sealing plates wear rapidly. Over time, wear of the oil seal material can lead to air leaks. Summary of the Invention

[0003] The purpose of the present invention is to provide a ceramic sealing device for a rotary engine, which solves the problem that the sealing part in the current rotary engine has a poor effect.

[0004] The technical solution adopted by the present invention is:

[0005] A ceramic sealing device for a rotary engine, comprising a first ceramic sealing sheet, a second ceramic sealing sheet, and a plurality of sealing springs; the first ceramic sealing sheet and the second ceramic sealing sheet are both rectangular and have the same structure; the first ceramic sealing sheet comprises a ceramic sheet and a movable sheet; the ceramic sheet is a right-angled trapezoid, the base of the ceramic sheet being a length of the first ceramic sealing sheet; and the movable sheet is a right-angled triangle;

[0006] In the installed state: the oblique edges of the ceramic plate and the movable plate slide into contact with each other, and the other long side of the first ceramic sealing plate is provided with spring abutment positions spaced in sequence along the direction of the movable plate; the second ceramic sealing plate rotates 180° along its length and then slides against the first ceramic sealing plate, and several sealing springs abut against the spring installation positions.

[0007] The present invention is also characterized in that:

[0008] The spring abutment position includes another long second groove, a first protrusion, a first groove, a first protrusion, a first groove and a second protrusion which are formed in sequence along the direction of the movable plate. The second protrusion is located on the movable plate.

[0009] In the installed state, the sealing spring abuts against the first protrusion and the second protrusion. When the first ceramic sealing sheet and the second ceramic sealing sheet slide together, the first ceramic sealing sheet and the second ceramic sealing sheet form two second protrusions at the two end portions of their other sides, and four first protrusions are formed between the two second protrusions.

[0010] The number of the sealing springs is six; in the installed state, two of the sealing springs abut against the two second protrusions respectively, and the remaining four sealing springs abut against the four first protrusions respectively.

[0011] The ceramic sheet is provided with a long through hole between the upper bottom and the lower bottom along the thickness direction of the ceramic sheet.

[0012] The included angle between the hypotenuse of the movable sheet and the width of the first ceramic sealing sheet is 35°-40°.

[0013] The beneficial effects of the present invention are as follows: the ceramic sealing device of the present invention for a rotary engine is designed with a ceramic sealing plate and a movable plate. During operation, the ceramic sealing plate can seal the side of the rotor through the abutment design of the sealing spring, and the corners of the movable plate can seal the upper corners of the side of the rotor; the sealing effect of this device is good and has certain practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the first ceramic sealing sheet and the second ceramic sealing sheet in the ceramic sealing device for a rotary engine of the present invention;

[0015] Figure 2 It is a schematic structural diagram of a sealing spring mounting hole in a ceramic sealing device for a rotary engine according to the present invention;

[0016] Figure 3 The present invention is a schematic structural diagram of a sealing plate mounting platform in a ceramic sealing device for a rotary engine.

[0017] In the figure: 1. Ceramic plate, 2. Long through hole, 3. Movable plate, 4. First protrusion, 5. First groove, 6. Second groove, 7. Sealing position, 8. Second protrusion, 9. Sealing spring mounting hole, 10. Sealing plate mounting platform, 11. Sealing plate mounting groove, 12. Sealing spring. DETAILED DESCRIPTION

[0018] The ceramic sealing device for a rotary engine of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The ceramic sealing device for a rotary engine of the present invention comprises two identical first and second ceramic sealing sheets, both of which are rectangular in structure. Taking the first ceramic sealing sheet as an example, one long side of the first ceramic sealing sheet is a sealing position 7. The first ceramic sealing sheet is cut into a right-angled trapezoidal ceramic sheet 1 and a right-angled triangular movable sheet 3. The cutting method is as follows: cutting is performed along one long side of the ceramic sheet 1 to the corner of the other long side near the cutting point. The structure after cutting is as follows: Figure 1 shown.

[0020] In the installed state, the first ceramic sealing sheet is rotated 180° in the length direction and then adhered to the second ceramic sealing sheet to form an integral sealing sheet. The integral sealing sheet is then placed in the sealing sheet installation groove 11 along its width direction, and the oblique edges of the ceramic sheet 1 and the movable sheet 3 slide into contact.

[0021] like Figure 1 As shown, still taking the first ceramic sealing sheet as an example, the upper bottom of the ceramic sheet 1 is formed with a second groove 6, a first protrusion 4, a first groove 5, a first protrusion 4, and a first groove 5 in sequence from left to right. When the movable sheet 3 slides and fits the ceramic sheet 1, a second protrusion 8 is formed along the upper bottom extension portion of the ceramic sheet 1.

[0022] After the second ceramic sealing sheet is slidably attached to the first ceramic sealing sheet, Figure 1 It can be seen that the second groove 6, first protrusion 4, first groove 5, first protrusion 4, first groove 5, and second protrusion 8 of the first ceramic sealing sheet correspond to the second protrusion 8, first groove 5, first protrusion 4, first groove 5, first protrusion 4, and second groove 6 of the second ceramic sealing sheet respectively, and then the overall sealing sheet has six protrusions formed on this edge in sequence, and there are six grooves under the six protrusions. It can be obtained that the first, third, and fifth protrusions are integrated with the second ceramic sealing sheet, and the second, fourth, and sixth protrusions are integrated with the first ceramic sealing sheet.

[0023] As an embodiment, in order to reduce the weight of the ceramic sheet 1 and improve its flexibility, a long through hole 2 is opened on the surface of the ceramic sheet 1. The length of the long through hole 2 can be selected according to actual needs, but it should not affect the performance of the entire ceramic sheet.

[0024] like Figure 2 and Figure 3As shown, in a working state, the entire sealing plate is placed in the sealing plate mounting groove 11 along its width direction. The sealing plate mounting platform 10 has six sealing spring mounting holes 9 on the side of the sealing plate mounting groove 11, and a sealing spring 12 is installed in each sealing spring mounting hole 9. Among the six sealing spring mounting holes 9, the sealing springs 12 in the first, third, and fifth spring holes abut against the first ceramic sealing plate, and the sealing springs 12 in the other three spring holes abut against the second ceramic sealing plate. After the rotor is configured at the end of the entire sealing plate away from the sealing springs 12, and the sealing cover and other structures are configured at the upper end of the rotor, the tip of the movable plate 3 is used to abut the gap between the sealing cover and the rotor to seal the gap; the sealing position of the ceramic plate 1 abuts against the side wall of the rotor to seal the rotor sidewall, thereby achieving all-round sealing.

[0025] While the present invention has been described in detail through general explanations, specific embodiments, and experiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

[0026] The ceramic sealing device of the present invention is used for a rotary engine, has a convenient and compact structure, and is reasonably designed. It can improve the sealing effect to a certain extent and increase the life of the rotor, etc., and has good practical significance.

Claims

1. A ceramic sealing device for a rotary engine, characterized in that: The invention comprises a first ceramic sealing sheet, a second ceramic sealing sheet and a plurality of sealing springs (12); the first ceramic sealing sheet and the second ceramic sealing sheet are both rectangular and have the same structure; the first ceramic sealing sheet comprises a ceramic sheet (1) and a movable sheet (3); the ceramic sheet (1) is a right-angled trapezoid; the bottom of the ceramic sheet (1) is a length of the first ceramic sealing sheet; and the movable sheet (3) is a right-angled triangle; In the installed state: the oblique sides of the ceramic sheet (1) and the movable sheet (3) are slidably connected, and the other long side of the first ceramic sealing sheet is sequentially spaced along the direction of the movable sheet (3) to form spring abutment positions; the second ceramic sealing sheet is rotated 180° along the direction of its length and then slidably fits the first ceramic sealing sheet, and a plurality of the sealing springs (12) abut against the spring installation positions; The spring contact portion comprises another long second groove (6) located on the first ceramic sealing plate and formed in sequence along the direction of the movable plate (3), a first protrusion (4), a first groove (5), a first protrusion (4), a first groove (5) and a second protrusion (8), wherein the second protrusion (8) is located on the movable plate (3); In the installed state, the sealing spring (12) abuts against the first protrusion (4) and the second protrusion (8), and when the first ceramic sealing sheet and the second ceramic sealing sheet are slidably fitted together, the first ceramic sealing sheet and the second ceramic sealing sheet form two second protrusions (8) at both ends of the other side thereof, and four first protrusions (4) are formed between the two second protrusions (8); The sealing springs (12) are provided in six numbers; in the installed state, two of the sealing springs (12) respectively abut against the two second protrusions (8), and the remaining four sealing springs (12) respectively abut against the four first protrusions (4); The ceramic sheet (1) is provided with a long through hole (2) between its upper base and lower base along its thickness direction; The included angle between the hypotenuse of the movable sheet (3) and the width of the first ceramic sealing sheet is 35°-40°.

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