Thermodynamic engine
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing thermodynamic motors suffer from low efficiency, limited adaptability to varying needs, and structural complexity, making them expensive to manufacture and maintain, with difficulties in modifying strokes and bores to achieve different flow rates and pressures.
Innovation Solution
A thermodynamic motor utilizing a thermodynamic cycle with a working fluid that vaporizes at low temperatures, comprising an evaporator, motor, condenser, and compressor, and featuring double-acting cylinder-plunger groups with synchronized plungers and one-way valves to efficiently convert thermal energy into mechanical energy, allowing for versatile flow rates and pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional thermodynamic motors use turbines or piston-crank mechanisms, then they can convert thermal energy to mechanical energy, but they suffer from low efficiency and high structural complexity
Solution Approach 1:
The motor is divided into multiple independent cylinder-plunger groups (first group with cylinder 16 and plunger 17, second group with cylinder 34 and plunger 35) that operate in parallel. Each group functions as an independent thermodynamic cycle unit, allowing the system to process thermal energy through multiple simultaneous cycles, thereby improving overall conversion efficiency while keeping each individual cylinder structure relatively simple
Solution Approach 2:
The patent combines the compressor and motor functions into a single integrated device. The first cylinder-plunger group (16-17) serves as the compressor while the second cylinder-plunger group (34-35) serves as the motor, both sharing common structural elements and operating within the same housing. This merging eliminates the need for separate compressor and motor assemblies, reducing overall structural complexity while maintaining high thermal energy conversion efficiency
2Adaptability or versatility
If traditional thermodynamic motors have fixed cylinder dimensions, then they have simple structure, but they cannot adapt to varying flow rates and pressures
Solution Approach 1:
The system employs dynamic control through synchronized valve operation. The plungers 17 and 35 are mechanically linked via transmission rods 41-42 to coordinate the opening and closing of intake and discharge valves in both cylinder groups. This dynamic valve timing allows the motor to adapt to varying operating conditions (different flow rates and pressures) by adjusting the timing and duration of valve openings, enabling versatile operation without changing physical dimensions
Solution Approach 2:
The dual cylinder-plunger group design provides multi-functionality. The same structural configuration can operate at different capacities by adjusting the synchronization of the two groups. When both groups operate simultaneously, the system handles higher flow rates; when one group is deactivated or operates at reduced capacity, the system adapts to lower flow requirements. This universal design allows a single motor structure to serve multiple operational needs
3Ease of operation
If traditional thermodynamic motors use complex mechanisms, then they can achieve precise control, but they become expensive to manufacture and service
Solution Approach 1:
The system achieves precise control through self-synchronization of the two cylinder-plunger groups. The mechanical linkage via transmission rods 41-42 automatically coordinates the valve timing and plunger motion without requiring external control systems, sensors, or complex electronic controls. The plungers themselves serve as the synchronization mechanism, eliminating the need for separate control devices and reducing manufacturing costs while maintaining precise operational control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables high efficiency, versatility in flow rates and pressures, and simplified manufacturing, resulting in a cost-effective and maintainable thermodynamic motor capable of double-acting propulsion.
Implementation Method 1
In the evaporator 4 the thermodynamic circuit 2 receives energy as heat from a hot thermal source... such energy is then conveyed from the hot source to the evaporator 4 by means of a first hot thermal carrier fluid, consequently the working fluid, at the liquid state at the inlet of the evaporator 4, evaporates by increasing the temperature and then the pressure.
Implementation Method 2
In the condenser 6 the working fluid exiting the motor 5 releases heat, by cooling down and decreasing the pressure and temperature thereof, and it returns to the liquid state.
Implementation Method 3
The thermodynamic motor 1 exploits the thermal energy which is then converted into mechanical energy. In order to convert the thermal energy into mechanical energy, the thermodynamic motor 1 comprises a thermodynamic cycle 2
Data Source
Figure 1~2
Figure 3
AI summary
A thermodynamic motor (1 ) comprises: a thermodynamic circuit (2) for implementing by a working fluid, a power thermodynamic cycle, said thermodynamic circuit (2) comprising an evaporator (4), a motor (5), a condenser (6) and a compressor (7); a first cylinder-plunger group (12) with a first cylinder (16) and a first plunger (17), and a second cylinder-plunger group (13) with a second cylinder (34) and a second plunger (35), wherein said first (17) and second plungers (35) are translatingly integral with each other by means of a common stem (15), wherein: said first cylinder-plunger group (12) implements said compressor (7) of the thermodynamic circuit (2); said second cylinder-plunger group (13) implements said motor (5) of the thermodynamic circuit (2); said evaporator (4) comprises a first thermal exchanger (46) configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit (2) with a first hot thermal carrier fluid in a thermal relationship with a hot thermal source; said condenser (6) comprises a second thermal exchanger (51) configured to put in a thermal exchange relationship said working fluid of the thermodynamic circuit (2) with a second cold thermal carrier fluid in a thermal exchange relationship with a cold thermal source.