ENJOMOR α-type Alpha Double-Cylinder Double-Piston Hot Air Stirling Engine Model Toy Gift for Science and Education Machinery Enthusiasts

ENJOMOR Alpha Type Double-Cylinder Double-Piston Hot Air Stirling Engine Model Toy Gift for Science and Education Machinery Enthusiasts

Introduction:

This is an α-type double-cylinder double-piston Stirling engine. There is no separate valve cylinder. Correspondingly, a set of cylinders with the same structure as the cooling-side cylinder participate in the cold and heat exchange and work together, because it is There are two independent sets of cylinders with the same structure. One side of the cylinder is responsible for generating heat energy, and the other side of the cylinder is responsible for cooling. At the same time, both sets of cylinders generate power.
Since the two sets of cylinders are completely independent, there is a significant temperature difference. When the temperature of the front section of the heating side is as high as 600 degrees, the temperature of the cooling side cylinder can still maintain a temperature of about 50 degrees after 20 minutes of continuous operation. This will produce a temperature of 500 degrees. The above temperature difference is also the source of sufficient and continuous power output.
This engine uses 20MM power cylinders and 20MM stainless steel heating pipes on both sides. The heating pipe on the heating cylinder side is obviously longer than the cooling side. This is to design a better compression ratio.
The two sets of cylinder connecting rods are not directly connected, but are connected through two sets of gear systems. The gear ratio is designed to be 2:1. The crankshaft speed reaches 1000r/min. The flywheel speed of the 78MM diameter and 155g flywheel is 2000r/min. Because the flywheel The strong inertia makes the machine run more stable.
To ensure that the machine runs as smoothly and quietly as possible, we use 14 precision bearings for the entire machine.
In order to maximize the life of the cylinder and piston, we use bearing steel GCR15 as the raw material of the cylinder liner and piston liner. After processing on the CNC lathe, it is quenched to increase the hardness to 58-62HRC, and then ground to achieve a precision of plus or minus. Around 0.005MM, while the piston is reciprocating in the cylinder, it also needs to seal the gas in the cylinder as much as possible. This is a key part that reflects Stirling's precision.
Large size flywheel, dual cylinders, dual pistons, dual gears, brass connecting rods, crankshaft, dual 10MM aluminum alloy brackets, two sets of cylinders with 2.5MM wall thickness cylinder liners. The engine body size is 200*138*125mm. It doesn't look big, but it weighs 1.8kg.

Specification:

Brand: ENJOMOR
Material: stainless steel + brass + aluminum alloy
Product weight: 1816g
Product size: 200*138*125mm
Heating replacement cylinder inner diameter: 20mm
Power piston diameter: 20mm
Piston stroke: 20mm
Flywheel diameter: 78mm
Pulley diameter: 20mm
Total number of bearings: 14

Packing list: 

Stirling engine*1,
Alcohol lamp*1,
Instruction manual*1

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