Technical Field

This invention is related to Stirling motor, which is an external combustion engine heat machine also known as hot air engine that also enables thermal energy to be converted to mechanical energy. 

The invention in question is related in detail to; the connecting rod situated between the crank mentioned for enabling the required circular motion and the hot section gas flow pipe, relevant drive piston, drive shaft, pistons, the heater exchanger cylinder providing linear motion to the pistons, and the connecting rod situated between the crank mentioned and the cold section gas flow pipe, relevant drive piston, drive shaft, pistons and the cooler exchanger cylinder. 

Predecessor Technique

In all known Stirling engine types, one connecting rod and one piston work connected to each other. 

In Stirling engines, heating/cooling rate when the working gas fills the cylinder volume is a criteria directly proportional to engine efficiency.  

Advantages of the Invention: 

-         The working gas is heated and cooled rapidly.

-         With rapid heating and rapid cooling, engine efficiency has been increased.

-         Inflation and impermeability balance can be reached more easily.

-         Strong Stirling engine production is realized with ease with this method. 

For achieving the purposes described above, it includes within; the connecting rod situated between the crank mentioned for enabling the required circular motion and the hot section gas flow pipe, relevant drive piston, drive shaft, pistons, the heater exchanger cylinder providing linear motion to the pistons, and the connecting rod situated between the crank mentioned and the cold section gas flow pipe, relevant drive piston, drive shaft, pistons and the cooler exchanger cylinder. 

In order to achieve this, it provides the desired linear motion by the working gas expanding via heating, concentrating via cooling and thus affecting the pistons. 

Figures Depicting the Invention:
Figure-1; is the overall three dimension layout of the Stirling engine subject to invention.
Figure -2; is the overall three dimension layout of the Stirling engine subject to invention after the cross-sections.
Figure -3; is the view of the cross-sections of the cylinders belonging to the Stirling engine subject to invention.
Figure -4; is the overall three dimension layout of the crank, connecting rods, drive cylinder, drive shafts, pistons, regenerator and gas flow pipes belonging to the Stirling engine subject to invention.
Figure -5; is the overall three dimension layout of the drive piston, drive shafts and pistons belonging to the Stirling engine subject to invention.
Figure -6; is the overall three dimension layout of the heater exchanger cylinder and the cooler exchanger cylinder including drive components belonging to the Stirling engine subject to invention with the cross-sections taken on cylinders.
Figure -7; is the overall three dimension layout of the heater exchanger cylinder and the cooler exchanger cylinder belonging to the Stirling engine subject to invention with the cross-sections taken on cylinders’ working gas accumulation/distribution section.
Figure -8; is the two dimension view of the examples showing that the exchanger cylinder may be designed with different number of pores and in different shapes. 

Part Numbers:
1- Chassis
2- Connecting rod
3- Regenerator
4a- Hot section gas flow pipe
4b- Cold section gas flow pipe
10- Heater exchanger cylinder
11- Heater exchanger cylinder working gas accumulation/distribution section
12- Heater exchanger cylinder working gas exit gap
13- Heater exchanger cylinder working gas exit gaps
14- Working gas heating areas
20- Cooler exchanger cylinder
21- Cylinders connecting upper section component
22- Cooler exchanger cylinder working gas accumulation/distribution section
23- Cylinders connecting lower section component
24- Cooler exchanger cylinder working gas exit gap
25- Cooler exchanger cylinder working gas exit gaps
26- Working gas cooling areas
30- Drive piston cylinder
40- Crank
41- Crank shaft
42- Cranks connecting shaft
43- Crank bearing component
50- Drive piston
51- Drive piston connecting rod connection shaft
52- Drive piston compression-preventing air gap
53- Drive piston- connecting rod connection shaft seat
54- Drive piston-drive shaft connection pin seat
60- Drive shafts
70- Pistons
71- Piston-drive shaft connection pin seat
72- Piston-drive shaft connection pins
A- Hot section
B- Cold section 

Detailed Explanation of the Invention

In Figure-1, the overall view of the invention is shown in three-dimension layout. The chassis (1), drive piston cylinder (30) connected to chassis and the heater exchanger cylinder (10) connected to drive piston cylinder constitute the section where the working gas is heated. The heated working gas expands, providing linear motion to the pistons (70). Regenerator (3) contributes to the heating and cooling of the working gas through the wire coils usually found within it for the purpose of increasing efficiency. The transfer of the working gas from the heater exchanger cylinder (10) to the cooler exchanger cylinder (20) through the regenerator (3) is realized via the hot section gas flow pipe (4a) and the cold section gas flow pipe (4b). 

The linear motion created at the pistons (70) is transferred by the drive components that are namely the drive piston (50) and drive shaft (60) via the connecting rod (2) to the crank (40) which provides circular motion. For the equivalent motion of the cranks (40), the cranks are interconnected via the connection shaft (42). For the cooler exchanger cylinder (20) has been designed as a separate circular cylinder group in the given example, the cylinders in here are connected via the connecting upper section component (21).  

In Figure-2, the invention is shown in three-dimension layout after the cylinders are cut by cross-sections. The desired linear motion is obtained in the repeating process where the working gas affects the pistons (70) after expanding due to being heated in the heater exchanger cylinder (10), and then concentrating due to being cooled in the cooler exchanger cylinder. The pistons (70) work as a group, transferring the linear motion to the connecting rod (2) via the drive shafts (60) over the drive piston (50). In the crank (40) connected to the connecting rod (2), linear motion is converted into circular motion. 

With a heat source, the working gas is heated within the working gas heating areas (14) in heater exchanger cylinder (10). During the engine operation, the working gases exiting through the heater exchanger’s (10) heating exchanger working gas exit gaps (13) are accumulated within the heater exchanger cylinder working gas accumulation/distribution area (11), and then passes through the heater exchanger cylinder working gas exit gap (12) to be transferred via the hot section gas flow pipe (4a) into the regenerator (3). Then the working gas passes through the cooler exchanger cylinder working gas exit gap (24) via the cold section gas flow pipe (4b), and is transferred from the cooler exchanger working gas accumulation/distribution area (22) via the cooler exchanger exit gaps (25) into the working gas cooling areas where the working gas is cooled down. 

The drive piston (50) is situated within the cylinder volume of the drive piston cylinder (30). The cooler exchanger cylinder (20) is divided into sections for the rapid cooling of working gas resulting in the working gas cooling very rapidly when filled into the working gas cooling areas (26). The cylinders have been designed separate from each other for the heated working gas to be transferred into the air transferred in the cooler exchanger cylinder (20). The separate-designed cylinders are connected by the cylinder connecting upper section component (21) and cylinder connecting lower section component (23). The heater exchanger cylinder (10) on the other hand has been designed as one block for the purpose of maintaining the heat drawn from the source and the rapid heating of the working gas. 

In Figure-5, drive components and piston group are illustrated in three-dimension. The drive piston-connecting rod connection shaft (51) placed within the drive piston-connecting rod connection shaft seat (53) connects the drive piston (50) and the connecting rod (2). Drive piston compression-preventing air gaps (52) prevents the drive piston (50) from compression. The drive piston-drive shaft connection pin (72) placed within the drive piston-drive shaft connection pin seat (54) connects the drive piston (50) and the drive shaft (60). The piston-drive shaft connection pin (72) placed within the piston-drive shaft connection pin seat (71) in the pistons (70) connects the piston (70) and the drive shaft (60).

The specifications depicting an implementation type of which details are explained above has been given for the purpose of presenting an easily understandable example without any limitations to the existing invention. In this example, the assumption of 6 piston groups in each section, and for these piston groups, 6 areas of circular designed cylinder values have been given. Taking into consideration that the invention specifications are open to various modifications such as  the exchanger cylinder being designed in a different number of included sections such as 3 sections or 12 sections as illustrated in the examples given in Figure-8, or in one block or separate, air pored, circular, side to side or diagonal linear manners; the subject invention is requested to be evaluated within the context of the options given within the annex.

SUMMARY
A NEW STIRLING ENGINE TYPE

The invention is a new type of Stirling engine that has been designed for the purpose of increasing the efficiency of said engines which are essentially a type of external combustion engine, reducing the impermeability problems and producing strong engines, and is related to the connecting rod (2) situated between the crank (40) and the hot section gas flow pipe (4a), relevant drive piston (50), drive shafts (60), pistons (70), the heater exchanger cylinder (10) providing linear motion to the pistons; and the connecting rod (2) situated between the crank (40) and the cold section gas flow pipe (4b), relevant drive piston (50), drive shafts (60), pistons (70) and the cooler exchanger cylinder (20).

Menderes Suludere
02/25/2010