CN220505196U

CN220505196U - Novel Stirling piston structure

Info

Publication number: CN220505196U
Application number: CN202322093407.0U
Authority: CN
Inventors: 王国峰; 王颖欣
Original assignee: Xiangfeng Suzhou Automotive Parts Technology Co ltd
Current assignee: Xiangfeng Suzhou Automotive Parts Technology Co ltd
Priority date: 2023-08-05
Filing date: 2023-08-05
Publication date: 2024-02-20
Anticipated expiration: 2033-08-05

Abstract

The utility model discloses a novel Stirling piston structure, which comprises a Stirling piston body, wherein the Stirling piston body comprises a piston reference body, a piston head and a guide ring, the piston head is positioned at the head of the piston reference body, the guide ring is positioned at the tail of the piston reference body, a cavity is formed in the Stirling piston body, a piston pin is movably connected in the cavity, a connecting rod is movably connected with the piston pin through a piston pin hole, and a crank hole is formed in one end of the connecting rod. According to the novel Stirling piston structure, the axial heat loss of the piston is reduced through engineering plastics or engineering ceramics, and the light weight is realized.

Description

Novel Stirling piston structure

Technical Field

The utility model relates to the field of Stirling pistons, in particular to a novel Stirling piston structure.

Background

The stirling piston is one of the core components in a stirling engine, also known as a power piston or working piston. It is a sealed cylindrical member, typically made of metal, for producing mechanical work to drive the engine, and a stirling piston, typically consisting of several key parts, a piston head, a piston rod and a piston ring, operates on the principle of reciprocating within a cylinder to produce cyclic mechanical work by compressing and expanding a working gas. The working gas in the piston receives compression force during the compression stroke, and part of heat energy is converted into mechanical energy; the expansion stroke is pushed by pressure, and mechanical energy is output. This rhythmic operation of reciprocation makes the stirling piston one of the reliable and efficient energy conversion devices.

The existing stirling pistons have large heat conduction losses, the stirling pistons are usually made of metal, which has relatively high heat conduction properties, so that heat conduction occurs at the contact of the piston with the cylinder wall, meaning that heat generated by partial combustion is transferred through the piston to the piston head and piston rod and further dissipated to the lower end of the piston rod. These conduction losses result in wasted heat and reduced thermal efficiency of the engine, and the heat dissipation capacity of the piston crown is limited due to the conforming of the piston crown to the cylinder wall. Under the high-temperature working condition, a large amount of heat can be accumulated at the top of the piston and cannot be effectively emitted, so that the temperature of the top of the piston can be increased, the heat loss of a piston ring and a cylinder wall is increased, and the heat efficiency of the Stirling engine is reduced; accordingly, a novel Stirling piston structure is proposed for the above-mentioned problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model discloses a novel Stirling piston structure, which comprises a Stirling piston body, wherein the Stirling piston body comprises a piston reference body, a piston head and a guide ring, the piston head is positioned at the head of the piston reference body, the guide ring is positioned at the tail of the piston reference body, a cavity is formed in the Stirling piston body, a piston pin is movably connected in the cavity, the piston pin is movably connected with a connecting rod through a piston pin hole, and a crank hole is formed in one end of the connecting rod.

As a preferable technical scheme of the utility model, one end of the Stirling piston body is provided with a piston hole, and the diameter of the piston hole is larger than the width of the connecting rod

As a preferable technical scheme of the utility model, the piston reference body is made of a light high-strength heat insulation material.

As a preferable technical scheme of the utility model, the piston head is made of high-temperature-conduction and high-temperature-resistant materials.

As a preferable technical scheme of the utility model, the guide ring is made of high-temperature-conduction and high-temperature-resistant materials.

The beneficial effects of the utility model are as follows:

the novel Stirling piston structure is made of a light high-strength heat insulation material through a piston reference body, the material is engineering plastic or engineering ceramic, the axial heat loss of the piston can be reduced through the engineering plastic or engineering ceramic, the light weight is realized, and meanwhile, the friction heat is rapidly dissipated through the piston head and the guide ring;

the novel Stirling piston structure is made of high-temperature-conduction and temperature-resistant materials through the piston head and the guide ring is made of high-temperature-conduction and temperature-resistant materials, the materials are copper or aluminum or high-heat-conduction ceramic, and meanwhile copper and aluminum are required to be subjected to wear-resistant treatment, so that the novel Stirling piston structure has high practical value.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic illustration of the structure of a novel Stirling piston structure of the present utility model;

FIG. 2 is a cross-sectional view of a novel Stirling piston structure in accordance with the present utility model;

FIG. 3 is a schematic illustration of a connecting rod structure of a novel Stirling piston structure in accordance with the utility model.

In the figure: 1. a Stirling piston body; 101. a piston reference body; 102. a piston head; 103. a guide ring; 2. a piston bore; 3. a connecting rod; 4. a crank hole; 5. a piston pin; 6. piston pin bore.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Examples: as shown in fig. 1-3, the novel stirling piston structure comprises a stirling piston body 1, wherein the stirling piston body 1 comprises a piston reference body 101, a piston head 102 and a guide ring 103, the piston head 102 is positioned at the head of the piston reference body 101, the guide ring 103 is positioned at the tail of the piston reference body 101, a cavity is formed in the stirling piston body 1, a piston pin 5 is movably connected in the cavity, the piston pin 5 is movably connected with a connecting rod 3 through a piston pin hole 6, and a crank hole 4 is formed in one end of the connecting rod 3.

Wherein, one end of the Stirling piston body 1 is provided with a piston hole 2, and the diameter of the piston hole 2 is larger than the width of the connecting rod 3

Wherein, the piston reference body 101 is made of light and high-strength heat insulation materials;

the piston reference body 101 is made of a light and high-strength heat-insulating material, which is engineering plastic or engineering ceramic, so that the axial heat loss of the piston can be reduced by the engineering plastic or engineering ceramic, and the light weight is realized.

The piston head 102 is made of a high-temperature-conducting and heat-resistant material, the guide ring 103 is made of a high-temperature-conducting and heat-resistant material, and the material is copper or aluminum or high-heat-conducting ceramic, and meanwhile copper and aluminum are subjected to wear-resistant treatment.

Working principle: when the Stirling piston body 1 is used, the Stirling piston body 1 comprises a piston reference body 101, a piston head 102 and a guide ring 103, the piston head 102 is positioned at the head of the piston reference body 101, the guide ring 103 is positioned at the tail of the piston reference body 101, a cavity is formed in the Stirling piston body 1, a piston pin 5 is movably connected in the cavity, the piston pin 5 is movably connected with a connecting rod 3 through a piston pin hole 6, one end of the connecting rod 3 is provided with a crank hole 4, and the piston reference body 101 is made of a light high-strength heat insulation material; the piston reference body 101 is made of a light and high-strength heat-insulating material, the material is engineering plastic or engineering ceramic, the axial heat loss of the piston can be reduced through the engineering plastic or engineering ceramic, the light weight is realized, the piston head 102 is made of a high-temperature-conduction and high-temperature-resistant material, the guide ring 103 is made of a high-temperature-conduction and high-temperature-resistant material, and the material is copper or aluminum or high-heat-conduction ceramic, and meanwhile copper and aluminum are subjected to wear-resistant treatment.

Finally, it should be noted that: in the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a novel Stirling piston structure, includes Stirling piston body (1), its characterized in that, stirling piston body (1) includes piston reference body (101), piston head (102) and guide ring (103), piston head (102) are located the head of piston reference body (101), guide ring (103) are located the afterbody of piston reference body (101), stirling piston body (1) is provided with the cavity, inside swing joint piston pin (5) of cavity, piston pin (5) have connecting rod (3) through piston pinhole (6) swing joint, just bent handle hole (4) have been seted up to one end of connecting rod (3), piston hole (2) have been seted up to one end of Stirling piston body (1), the diameter of piston hole (2) is greater than the width of connecting rod (3), piston reference body (101) adopt light, high strength thermal insulation material to make.

2. A novel stirling piston structure in accordance with claim 1, wherein the piston head (102) is formed of a high temperature conductive, temperature resistant material.

3. A novel stirling piston structure in accordance with claim 1 wherein the guide ring (103) is formed of a high temperature conductive, temperature resistant material.