Reed valve suitable for air inlet system of rotor engine

Abstract

The invention discloses a reed valve suitable for an air inlet system of a rotor engine, and belongs to the technical field of engine accessories. The problems that a traditional reed valve is prone to fatigue fracture, fast in abrasion and poor in sealing performance under the high-frequency vibration working condition of a rotor engine, and then the air inlet efficiency is low, and the service life is short are solved. The movable end of the carbon fiber diaphragm movably covers a valve port of the valve seat, the silica gel coating is coated on a sealing surface, in contact with the valve seat, of the carbon fiber diaphragm, the lift limiter is arranged on the outer side of the carbon fiber diaphragm, and the fixed end of the lift limiter covers the fixed end of the carbon fiber diaphragm. The lift limiter and the carbon fiber diaphragm are fixed on the valve seat through bolts, the cantilever end of the lift limiter is an arc-shaped surface which is gradually far away from the carbon fiber diaphragm, and a gap between the other end of the lift limiter and the valve seat is the lift of the carbon fiber diaphragm. The high-frequency vibration fatigue resistance can be improved. The silica gel coating reduces high-frequency impact abrasion, improves the sealing performance, reduces the sealing leakage rate and improves the air inlet efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of engine parts, and in particular relates to a reed valve suitable for the intake system of a rotary engine. Background Technology

[0002] Reed valves are widely used in refrigeration and air conditioning compressors, micro air compressors, motorcycle engines, and also in medical air equipment, marine starting air compressors, and special equipment such as gas and ventilators. However, the intake system of a rotary engine exhibits high-frequency vibration characteristics. Traditional steel reed valves are prone to fatigue fracture due to high-frequency vibration, and the valve plate wears quickly due to impact with the valve seat, leading to intake seal failure, reduced intake efficiency, and shortened service life, making them unsuitable for the operating conditions of rotary engines. Therefore, developing a reed valve structure that can resist high-frequency vibration, optimize sealing and wear resistance, and has strong adaptability is of significant practical importance. Summary of the Invention

[0003] The purpose of this invention is to provide a reed valve suitable for the intake system of a rotary engine, in order to solve the problems of traditional reed valves being prone to fatigue fracture, rapid wear, and poor sealing performance under high-frequency vibration conditions of a rotary engine, which in turn leads to low intake efficiency and short service life.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A reed valve suitable for the intake system of a rotary engine includes a valve seat, a lift limiter, a carbon fiber diaphragm, and a silicone coating. The movable end of the carbon fiber diaphragm movably covers the valve port of the valve seat. The silicone coating is applied to the sealing surface where the carbon fiber diaphragm contacts the valve seat. The lift limiter is disposed on the outside of the carbon fiber diaphragm, and the fixed end of the lift limiter covers the fixed end of the carbon fiber diaphragm. The lift limiter and the carbon fiber diaphragm are fixed to the valve seat by bolts. The cantilever end of the lift limiter is an arc-shaped surface that gradually moves away from the carbon fiber diaphragm. The gap between the other end of the lift limiter and the valve seat is the lift of the carbon fiber diaphragm.

[0005] Furthermore, the carbon fiber diaphragm is manufactured using a compression molding process, and the carbon fiber diaphragm material is a T700 grade carbon fiber reinforced resin matrix composite material.

[0006] Furthermore, the silicone coating has a thickness of 0.1-0.2 mm, a Shore hardness of 50-60 A, and a Dow Corning 744 coating type.

[0007] Furthermore, the lift limiter controls the maximum lift of the carbon fiber diaphragm to 1.2 mm.

[0008] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention can significantly improve the high-frequency vibration resistance of reed valves: it uses carbon fiber diaphragms to replace traditional steel valve plates. The carbon fiber material has a tensile strength of 3000MPa and an elastic modulus of 230GPa, which greatly reduces the diaphragm's motion inertia and improves its resistance to high-frequency vibration fatigue.

[0009] 2. This invention, through the combination of carbon fiber diaphragm and silicone coating, increases the fatigue life of the reed valve under high-frequency vibration conditions from 2000h for traditional steel valve plates to over 8000h, greatly improving the service life of the reed valve.

[0010] 3. This invention can optimize the sealing and wear resistance of the reed valve: The silicone coating is applied to the sealing surface where the carbon fiber diaphragm contacts the valve seat. The silicone coating has a Shore hardness of 50-60A, combining elasticity and wear resistance. The silicone coating can reduce the amount of impact wear between the valve plate and the valve seat, reduce high-frequency impact wear, improve sealing performance, reduce sealing leakage rate, and improve air intake efficiency.

[0011] 4. The invention has strong adaptability: It uses carbon fiber diaphragms to replace traditional steel valve plates, resulting in a lightweight overall structure. The diaphragm is 40% lighter than that of steel, which is suitable for the compact intake system layout of rotary engines and does not increase the weight of the whole machine. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a cross-sectional view of the present invention.

[0013] The component names and reference numerals in the above figures are as follows: 1. Valve seat; 2. Lift limiter; 3. Carbon fiber diaphragm; 4. Silicone coating; 5. Bolt. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0015] Detailed implementation methods: such as Figures 1-2As shown, this embodiment discloses a reed valve suitable for a rotary engine intake system, including a valve seat 1, a lift limiter 2, a carbon fiber diaphragm 3, and a silicone coating 4. The movable end of the carbon fiber diaphragm 3 movably covers the valve port of the valve seat 1. The silicone coating 4 is applied to the sealing surface where the carbon fiber diaphragm 3 contacts the valve seat 1. The lift limiter 2 is disposed on the outside of the carbon fiber diaphragm 3, and the fixed end of the lift limiter 2 covers the fixed end of the carbon fiber diaphragm 3. The lift limiter 2 and the carbon fiber diaphragm 3 are fixed to the valve seat 1 by bolts 5. The cantilever end of the lift limiter 2 is an arc-shaped surface that gradually moves away from the carbon fiber diaphragm 3. The gap between the other end of the lift limiter 2 and the valve seat 1 is the lift of the carbon fiber diaphragm 3.

[0016] Furthermore, the carbon fiber diaphragm 3 is manufactured using a compression molding process, and the material of the carbon fiber diaphragm 3 is a T700 grade carbon fiber reinforced resin matrix composite material.

[0017] Furthermore, the silicone coating 4 has a thickness of 0.1-0.2 mm, a Shore hardness of 50-60 A, and a Dow Corning 744 model.

[0018] Furthermore, the lift limiter 2 controls the maximum lift of the carbon fiber diaphragm 3 to 1.2 mm. The reed valve of this invention uses a carbon fiber diaphragm 3 instead of a traditional steel valve plate. The carbon fiber material has a tensile strength of 3000 MPa and an elastic modulus of 230 GPa, significantly reducing the diaphragm's motion inertia and improving its resistance to high-frequency vibration fatigue.

[0019] In this invention, a 0.1-0.2 mm thick silicone coating 4 is applied to the sealing surface of the reed valve where the carbon fiber diaphragm 3 contacts the valve seat 1. The silicone coating 4 has a Shore hardness of 50-60A, combining elasticity and wear resistance, reducing high-frequency impact wear, and improving sealing performance.

[0020] The carbon fiber diaphragm 3 is made by compression molding. The carbon fiber diaphragm 3 is made of T700 grade carbon fiber reinforced resin matrix composite material. After molding, a silicone coating 4 is sprayed on the sealing surface. The silicone coating 4 is of type Dow Corning 744. The thickness of the silicone coating 4 is controlled to be 0.1-0.2mm, and the curing temperature is 80℃ / 2h.

[0021] When assembling the reed valve, both the lift limiter 2 and the carbon fiber diaphragm 3 are fixed to the valve seat 1 by bolts 5 to ensure that the cantilever end is free. The lift limiter 2 controls the maximum lift of the carbon fiber diaphragm 3 to 1.2mm.

[0022] When installing the reed valve, place it at the air intake of the 1.0T rotary engine. The carbon fiber template 3 and the silicone coating 4 can greatly improve the sealing performance and increase the fatigue life of the reed valve.

[0023] The reed valve of the present invention, applicable to the intake system of a rotary engine, uses a carbon fiber diaphragm 3 instead of a traditional steel valve plate, which significantly reduces the diaphragm's motion inertia and improves its resistance to high-frequency vibration fatigue. A silicone coating 4 is applied to the sealing surface where the carbon fiber diaphragm 3 contacts the valve seat 1, which has both elasticity and wear resistance, reduces high-frequency impact wear, and improves sealing performance. This solves the technical problems of traditional reed valves being prone to fatigue fracture, rapid wear, and poor sealing performance under high-frequency vibration conditions of rotary engines, which leads to low intake efficiency and short service life.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reed valve suitable for use in a rotor engine induction system, characterised in that: The valve seat (1), the lift limiter (2), the carbon fiber diaphragm (3) and the silica gel coating (4) are included, the movable end of the carbon fiber diaphragm (3) is movably covered on the valve port of the valve seat (1), the silica gel coating (4) is attached to the sealing surface of the carbon fiber diaphragm (3) in contact with the valve seat (1), the lift limiter (2) is arranged outside the carbon fiber diaphragm (3), the fixed end of the lift limiter (2) is covered on the fixed end of the carbon fiber diaphragm (3), and the lift limiter (2) and the carbon fiber diaphragm (3) are fixed on the valve seat (1) through the bolt (5), the cantilever end of the lift limiter (2) is an arc surface gradually away from the carbon fiber diaphragm (3), and the gap between the other end of the lift limiter (2) and the valve seat (1) is the lift of the carbon fiber diaphragm (3).

2. A reed valve suitable for use in an intake system of a rotary engine according to claim 1, characterized in that: The carbon fiber diaphragm (3) adopts a mold pressing forming process, and the material of the carbon fiber diaphragm (3) is a T700-grade carbon fiber reinforced resin matrix composite material.

3. A reed valve suitable for use in an intake system of a rotary engine according to claim 2, wherein: The thickness of the silica gel coating (4) is 0.1-0.2mm, the Shore hardness of the silica gel coating (4) is 50-60A, and the model of the silica gel coating (4) is Dow Corning 744.

4. A reed valve suitable for use in an intake system of a rotary engine according to claim 3, wherein: The lift limiter (2) controls the maximum lift of the carbon fiber diaphragm (3) to be 1.2mm.

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