Piston type heat engine based on one-way valve

Abstract

A heat engine comprises a compression cavity (1), an expansion cavity (2), a heater (5), a cooler (6), one-way valves (7 and 8) and pistons (3 and 4), the compression cavity (1), the heater (5), the expansion cavity (2) and the cooler (6) are sequentially connected to form a four-component closed loop, the one-way valves (7 and 8) are additionally arranged at two connecting points, and the compression cavity (1) and the expansion cavity (2) are connected with the pistons (3 and 4).

Description

Piston heat engine based on one-way valve Technical Field

[0001] The present invention relates to the technical field of heat engines, and in particular to a heat engine that generates electricity using temperature differences. Background Art

[0002] The background technology of the present invention in terms of mechanical structure is largely derived from the traditional Stirling engine, but it has sufficient novelty in terms of gas circulation mode. Technical issues

[0003] The Stirling engine runs the Stirling cycle in a piston-cylinder system, and the heat recovery process in the Stirling cycle requires a regenerator. In actual Stirling engines, the regenerator structure often conducts heat excessively, resulting in excessive loss of available energy in the Stirling engine and greatly reducing its efficiency. Technical Solutions

[0004] Abandoning the regenerator design means abandoning the regeneration process from the circulation, and performing a cycle that does not require regeneration in the piston-cylinder system. Therefore, the gas is allowed to go from the compression chamber (1) to the heater (5), then to the expansion chamber (2), then to the cooler (6), and finally back to the compression chamber (1) to complete a cycle. This cycle is different from the Stirling cycle and includes two isobaric processes and two adiabatic processes: isobaric heat absorption: (11) to (12), adiabatic expansion: (12) to (13), isobaric heat release: (13) to (14), and adiabatic compression (14) to (11). In order to ensure that the gas circulation proceeds in the specified direction, a one-way valve design (3) (4) is added between the circulation devices. Although it is improved from the Stirling engine, the cycle inside it is no longer a Stirling cycle, so the present invention is not a Stirling engine. Beneficial effects

[0005] When using the mechanical device shown in Figure 1, a preliminary computer calculation of its efficiency shows that within the temperature ratio range of 1.7 to 2.4, the expected efficiency is between 75.6% and 79.0% of the Carnot limit. Compared with existing heat engine technology, this is a highly efficient heat conversion device that can be applied in a wide range of fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG1 is a schematic diagram of a basic structure of the present invention.

[0007] FIG2 is a schematic diagram of a basic structure of the present invention plus a diamond transmission device and a rotating mechanism.

[0008] FIG3 is a schematic diagram of each stage of the working gas cycle of the present invention. Best Mode for Carrying Out the Invention

[0009] In one embodiment, the mechanical structure adopts that of a traditional beta-type Stirling engine. The compression chamber and expansion chamber are located in the same cylinder. From the closed end, the cylinder consists of the following sequence: compression chamber, piston, expansion chamber, and piston. The two pistons are connected to a rotating member via a diamond-shaped transmission. The rotating member generates electricity in the generator, as shown in Figure 1. Modes for Carrying Out the Invention

[0010] In another embodiment, the mechanical structure adopts the structure of a traditional α-type Stirling engine. The compression chamber and the expansion chamber are respectively located in two different cylinders and connected to two pistons, as shown in Figure 2. Industrial Applicability

[0011] It can greatly improve the efficiency of existing heat engines, especially in the low-power field, and can even completely replace the Stirling engine.

Claims

1. A heat engine, characterized in that: The invention comprises a compression chamber, an expansion chamber, a heater, a cooler, a one-way valve and a piston. The compression chamber, the heater, the expansion chamber and the cooler are sequentially connected to form a four-component closed loop, and the one-way valves are added at two of the connection points. The compression chamber and the expansion chamber are connected to the piston.

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