Internally heated engine

Abstract

An internally heated engine is provided, which includes a Stirling engine and a heating device (6, 7), and the engine modifies the external heating method of the Stirling engine by disposing the heating device (6, 7) in the hot cylinder to push the piston and output power.

Description

[Technical Field]

[0001] The present invention belongs to the technical field of energy saving and emission reduction, and specifically relates to internally heated engines. [Background technology]

[0002] The Stirling engine was invented by British physicist Robert Stirling in 1816. It is an external combustion engine that generates power through a cycle of cooling, compression, heat absorption, and expansion within the cylinder. Its engine output is generally between that of a gasoline engine and a diesel engine. Its advantages include: 1. compatibility with a variety of energy sources and fuels, particularly suitable for industrial waste heat utilization; 2. low noise; and 3. unaffected by atmospheric pressure. Its disadvantages include: 1. large heat loss; 2. large size and low output; and 3. slow response. Currently, it is used in small quantities in various fields, including spaceflight, marine, and solar energy. Many researchers dedicated to low-carbon environmental protection have proposed using Stirling engines to recycle industrial waste heat and engine exhaust waste heat, but current Stirling engines have drawbacks that prevent them from being effectively used and widely adopted. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to provide an internally heated engine by converting thermal energy into electrical energy, thereby reducing carbon emissions, and changing the external heating method of the Stirling engine. [Means for solving the problem]

[0004] This invention retains all the advantages of the Stirling engine while improving its shortcomings, such as large heat loss, low power output, low thermal efficiency, and slow startup. This engine performs work by heating within the hot cylinder. The external heating method of the Stirling engine is modified by installing a fixed heating device within the hot cylinder and a heating device on the moving piston. During startup, the fixed heating device within the hot cylinder and the moving piston heating device simultaneously heat and dissipate heat, pushing the piston to output power. Power is output through a cycle of cooling, compression, heat absorption, and expansion within the cylinder. Currently, Stirling engine pistons are typically constructed with hollow multi-layer insulation, which cannot be heated and causes heat loss. This invention utilizes a heated piston method to expand the heating area within the hot cylinder, capturing more heat and generating more power compared to Stirling engines of similar size and model. An insulating heat-retention device is installed within the hot cylinder to reduce heat loss. Simultaneous two-way heating accelerates the heating rate and shortens startup time.

[0005] The present invention aims to utilize industrial waste heat and engine exhaust waste heat by connecting the fixed heating device and the movable piston heating device of the engine to heat and push the piston in the hot cylinder to drive the engine and output power. Also, various fuels can be used to drive and operate the engine by burning and heating the fuel through combustion devices installed in the fixed heating device and the movable piston heating device in the hot cylinder. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a diagram illustrating the principle of an internal heating engine. DETAILED DESCRIPTION OF THE INVENTION

[0007] The present invention provides an internally heated engine, which includes a Stirling engine and a heating device, wherein the Stirling engine is an engine in which the heating device is disposed within a hot cylinder, and the heating device is a movable heating device disposed within the hot cylinder, or a movable heating device and a fixed heating device disposed within the hot cylinder. Industrial waste heat or engine exhaust waste heat is input to the engine as a heat source. One or more devices can be connected in series in decreasing temperature order to achieve a predetermined ideal exhaust temperature. This is the best mode for implementing the invention, which reduces carbon dioxide emissions and generates electricity without consuming energy. The method is as follows. [Method 1] The heat source enters the fixed heating device 6 from input port 1, and after heat dissipation, is discharged from output port 2. At the same time, the heat source enters the piston heating device 7 from input port 5 via input connecting hose 11 and an input channel arranged inside the piston connecting rod 3, and after heat dissipation, is discharged from output port 4 via the output channel in the piston connecting rod 3 and output connecting hose 10. The heat is simultaneously heated by the fixed heating device 6 and the piston heating device 7, which pushes the piston to output power. [Method 2] It can be used with a variety of fuels. Fuel and oxygen enter through input port 1, and a combustion device is installed in fixed heating device 6. After combustion and heat dissipation, the fuel and oxygen are discharged from output port 2. At the same time, fuel and oxygen enter through input port 5, input connecting hose 11, and input channel located inside piston connecting rod 3. Piston heating device 7 is equipped with a combustion device. After combustion and heat dissipation, the fuel and oxygen pass through output channel in piston connecting rod 3 and output connecting hose 10 and are discharged from output port 4. The fuel is heated simultaneously by fixed heating device 6 and piston heating device 7, and pushes the piston to output power. [Explanation of symbols]

[0008] 1 input port 2 output ports 3-piston connecting rod 4 output ports 5 input ports 6 Fixed heating device 7 Piston heating device 8 Thermal insulation layer 9. Hot cylinder outer tube 10 Output Connection Hose 11 Input connection hose

Claims

[Claim 1] An internal heating engine including a Stirling engine and a heating device, The Stirling engine is an engine in which a heating device is disposed in a hot cylinder, An internal heating engine, wherein the heating device is a movable heating device disposed within the hot cylinder, or a movable heating device and a fixed heating device disposed within the hot cylinder.

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