KR20060071827A - External combustion engine with integrated engine cylinder, regenerator and cooler - Google Patents

Abstract

The present invention is an external combustion engine that converts into kinetic energy using an external heat source. The engine cylinders, regenerators, coolers, and pumps, which are components, are compactly arranged on the same axis to reduce heat loss, increase efficiency, and simplify the structure. It relates to the construction of an external combustion engine that lowers production costs.

Solar heat, external combustion engine, solar engine, solar power generation, regenerator, cooler, engine cylinder

Description

An external combustion engine combined with Cylinder, Re-generator and Cooler}

1 is an overall configuration diagram of an external combustion engine

2 is a cutaway view of an external combustion engine

3 is an intake valve unit three-dimensional view

4 is an exhaust valve unit three-dimensional view

5 is a perspective view of the piston portion

6 is a three-dimensional view of the engine cylinder;

7 is a stereoscopic view of a regeneration tube;

8 is a three-dimensional view of the cooling tube;

9 is an assembled three-dimensional view of the engine cylinder and the regeneration coil.

10 is a stereoscopic assembly diagram of the regeneration tube on the regeneration coil.

11 is a three-dimensional assembly diagram of the cooling coil on the regeneration tube;

12 is a perspective view of the assembled external combustion engine

<Explanation of symbols for main parts of drawing>

110: engine cylinder 140: inlet 1, 150: inlet 2

160: exhaust port 1 170: exhaust port 2, 200: intake valve portion

210: intake valve 1, 211: exhaust hole, 212: exhaust connection rod hole

220: intake valve 2, 230: intake valve connecting rod, 240: spring 1

310: exhaust valve 1, 311: exhaust hole, 320: exhaust valve 2

330: exhaust valve connecting rod, 340: spring 3, 350: spring 4

410: piston, 411: intake connection hole, 412: exhaust connection hole

420: piston shaft,

510: pump block, 570: pump shaft,

700: regeneration tube, 710: regeneration tube inlet, 1 720: regeneration tube inlet 2

730: regeneration exhaust, 800: cooling pipe, 810: cooling pipe suction port 1

820: cooling pipe inlet 2, 850: intake pipe, 1 851: intake pipe 2

852: Intake pipe 3, 853: Intake pipe 4, 860: Suction valve

861: exhaust valve, 870: regenerated coil, 871: regenerated coil outlet

880: cooling coil, 881: cooling coil inlet, 882: cooling coil outlet

The present invention is an external combustion engine driven by an external heat source, the heat medium may use a liquid having a phase change or a gas having no phase change. Existing steam turbine system uses the blade method to obtain the rotational energy, so it is necessary to meet the conditions of the steam and precise blade processing, it is suitable for expensive and large capacity. As a small external combustion engine, the Stirling engine is not commercialized because its output per weight is about one tenth of that of the existing internal combustion engine, and its structure is complicated and its price is expensive.

An object of the present invention is to provide a medium and small external combustion engine in order to effectively utilize the small and medium external heat source for power generation and hot water production.

Hereinafter, described in detail by the accompanying drawings as follows.

1 is a diagram illustrating the configuration of an engine cylinder, a regenerator, a cooler, a pump, a flywheel, and a generator of an external combustion engine. The regenerator is wrapped on the outside of the engine cylinder and the cooler is wrapped on the outside of the engine cylinder so that the engine cylinder, which is a high temperature part, is exposed to the outside so that no heat loss occurs, resulting in higher efficiency and smaller volume of the external combustion engine.

Regenerated coil and regenerated tube are collectively expressed as a regenerator, and refrigerating coil and cooling tube are collectively expressed as a chiller.

The reciprocating motion of the piston of the cylinder is converted to rotational motion through the crank and the flywheel and rotates the generator which is axially coupled to the flywheel.

FIG. 2 is an internal cutaway view of the heat engine, wherein the intake valve part of FIG. 3, the exhaust valve part of FIG. 4, and the piston part of FIG. 5 are assembled on the same axis inside the engine cylinder of FIG. 6, and the regeneration tube of FIG. 7 is located outside the engine cylinder. 700 is wrapped around the cooling tube 800 is coupled to the outside.

3 is an intake valve unit 200, the intake valve 1 210 and the intake valve 2 220 is connected to the intake valve connecting rod 230, there is an exhaust hole 211, the exhaust valve connecting rod 330 The exhaust connecting rod hole 212 is formed and the spring 1 240 is attached to the inside of the intake valve.

4 shows that the exhaust valve unit has an exhaust valve 1 310 and an exhaust valve 2 320 connected to the exhaust valve connecting rod 330, and the exhaust valve has an exhaust hole 311 formed therein, and springs 3 340 on both sides of the exhaust valve. ) And spring 4 350 are attached.

5 is a piston portion is connected to the piston shaft 420 in the center of the piston 410, the intake connection hole 411 is formed in the piston, the intake valve connecting rod 230 can be inserted and move the exhaust connection hole 412 As the exhaust valve connecting rod 330 is inserted can move.

FIG. 6 is an engine cylinder, and two inlet ports 1 140 and two inlet ports 150 are formed on both sides of the engine cylinder, and two exhaust ports 1 160 and two exhaust ports 170 are disposed on the upper and lower sides. Formed.

FIG. 7 shows two regeneration tube inlets 1 710 and two regeneration tube inlets 2 720 formed at right and left sides of the regeneration tube 700. Formed.

8 shows two cooling tube inlets 1 810 and two cooling tube inlets 2 820 at right and left sides of the cooling tube 800.

9 is a three-dimensional view in which the regeneration coil 870 is attached on the engine cylinder, and the heat medium sucked into the intake valve 860 flows into the regeneration coil 870 through the exhaust valve 861. After it is expanded inside, it is heated by the waste heat of the heat medium discharged from the exhaust port 1 (160) and the exhaust port 2 (170) and then discharged to the regeneration coil outlet (871).

FIG. 10 is a shape in which the regeneration tube 700 is covered on the regeneration coil 870 of FIG. 9, and a plurality of regeneration vents 730 are formed in the upper half of the center of the regeneration tube.

11 illustrates that the cooling coil 880 is installed on the three-dimensional view of FIG. 10. The cooling water flows into the cooling coil inlet 881 and the cooling water flows out to the cooling coil outlet 882.

FIG. 12 shows a perspective stereoscopic view in which the body portion of the external combustion engine is completely assembled and the cooling tube 800 is mounted on the three-dimensional view in FIG. 11.

An example of the operation of an external combustion engine is as follows.

The externally heated high temperature and high pressure heat medium includes the suction tube 1 (850), the suction tube 2 (851), the suction tube 3 (852), and the suction tube 4 (853) of the cooling tube suction ports 1 and 2 of the cooling tube and the regeneration tube suction port 1 of the regeneration tube. It passes through the inside of the engine cylinder 110, 2 ,.

Step 1: Intake port 1 140 of the engine cylinder is opened by the intake valve 1 210 constituting the intake valve unit 200 in the state as shown in FIG. 2. And the inlet pipe 3 (852) flows into the left space of the piston 410 and the inlet port 150 is closed by the intake valve 2 (220) is blocked inflow of the high temperature and high pressure heat medium to the right space of the piston.

Since the exhaust port 1 160 is closed by the exhaust valve 1 310, the high temperature and high pressure heat medium of the piston left space does not flow out, and the exhaust port 2 170 is opened by the exhaust valve 2 320. Therefore, the left space of the piston expands by the inflow of the high temperature and high pressure heat medium, and the heat medium of the right space flows out of the outside with low pressure through the exhaust port 2, so that the piston moves to the right through the expansion process.

Step 2: When the piston moving to the right pushes the intake valve 2 (220), the intake valve unit 200 moves to the right side, and the intake valve 1 (210) closes the intake port (140) so that no high temperature and high pressure heat medium flows in. The high-temperature, high-pressure heat medium introduced without heat-induced adiabatic expansion, and the heat medium in the right space is continuously discharged through the exhaust port 2 so that the piston continues to move to the right.

Step 3: When the piston, which continues the adiabatic expansion, continues to push the intake valve part 200 to the right side, the intake valve 1 (210) until the intake valve 2 (220) of the intake valve part 200 opens the inlet port (150). Keeps blocking the inlet 1 (140). At the same time, the intake valve 2 220 pushes the exhaust valve 2 320 of the exhaust valve part to the right so that the exhaust valve 2 320 closes the exhaust port 2 170 and at the same time, the exhaust port 1 160 is the exhaust valve 1 310. The opening to the right of the piston is completed.

Step 4: In contrast to step 1, the high temperature and high pressure heat medium flows into the right space of the piston through the inlet port 2 (150), and the medium pressure medium temperature heat medium insulated and expanded in the left space is discharged through the exhaust port 1 so that the piston is left by the positive pressure expansion. Move in the direction of

Step 5: In the opposite direction of step 2, the high-temperature high-pressure heat medium introduced into the right space undergoes adiabatic expansion to the medium-temperature medium-pressure heat medium, and moves the piston to the left.

Step 6: The inlet 1 is opened by the intake valve 1 in the opposite direction to the step 3. The exhaust valve 1 is closed and the exhaust valve 2 is opened. The piston movement to the left is completed and the movement to the right begins.

Through the process of steps 1 to 6 above, the piston continues the reciprocation by the high temperature and high pressure heat medium flowing therein, and rotates the connected flywheel as shown in FIG. 1 and drives the attached generator.

The medium temperature medium pressure heat medium discharged through the exhaust port 1 (160) and the exhaust port 2 (170) of the engine cylinder passes through the space formed between the engine cylinder and the regeneration pipe (700) and flows into the regeneration coil (870). After the heat transfer occurs, the temperature is further lowered and flows out of the regeneration tube through the regeneration exhaust 730.

The low temperature and low pressure heat medium exiting the regeneration tube stays in the space between the regeneration tube and the cooling tube 800 and is cooled by the cooling water flowing inside the cooling coil 880 to be liquefied in the case of phase change material. Is further cooled to maintain a low pressure in the cooling tube.

The cooled heating medium is introduced through the suction valve 860 when the pump shaft is moved to the right by the pump shaft 570 and the pump block 510 which are combined with the piston and exhaust when the pump shaft is moved to the left. It is discharged through the valve 861 and flows into the regeneration coil in a state of low temperature and high pressure, receives heat from the medium temperature medium pressure heat medium discharged from the engine cylinder, and receives the heat of the medium temperature medium pressure heat medium through a regeneration coil outlet 871 in a low temperature and high pressure state. High temperature and high pressure.

The high temperature and high pressure heat medium is supplied back into the engine cylinder through the suction pipes 1, 2, 3, and 4, and the cycle is cycled. Cooling water flows into the cooling coil inlet 881 to take heat from the heat medium to increase the temperature, thereby cooling the coil. Exit to outlet 882.

As described above, since the engine cylinder, pump, regeneration tube, regeneration coil, cooling tube, and cooling coil of the external combustion engine are configured, the high temperature engine cylinder blocks direct contact with the outside atmosphere to prevent heat loss and release heat. Inhalation through regeneration coil improves thermal efficiency. In addition, the structure of the engine coil is surrounded by the regeneration coil and the regeneration tube, and the regeneration tube and the pump is surrounded by the cooling coil and the cooling tube, thereby reducing the volume of the entire external combustion engine and simplifying the structure.

As described above, the present invention uses an regenerator as an external combustion engine that efficiently converts small and medium external heat sources into rotational energy, reduces heat dissipation to the outside, and increases efficiency, as well as an engine cylinder, a regenerator, and a cooler. By superimposing the arrangement of, it is possible to reduce the volume of the entire heat engine and to simplify the structure, thereby reducing the production cost and weight. Therefore, these external combustion engines can generate power and hot water using incinerator waste heat, landfill gas, biomass and concentrated high temperature solar heat.

Claims (3)

An engine cylinder, wherein an inlet port and an exhaust port are formed; Two intake valves having an exhaust connection rod hole and an exhaust hole coupled to each other by a spring and an intake valve connecting rod to open and close the intake port; An exhaust valve unit comprising two exhaust valves having an exhaust hole formed therein to be opened and closed by a spring and an exhaust valve connecting rod; A piston unit comprising a piston and a piston shaft having an intake valve connecting hole and an exhaust valve connecting hole formed to reciprocate; And an intake valve portion and an exhaust valve portion coupled to the same shaft as the piston portion in the engine cylinder to open and close the intake and exhaust ports and reciprocate by an external high temperature and high pressure heat medium. A reciprocating pump comprising a pump shaft driven by a piston force of an engine, a suction shaft, and an exhaust valve, in which the piston shaft and the pump shaft of the engine are directly connected to suck and discharge the heat medium. A regeneration tube is installed outside the engine cylinder, and a regeneration coil is installed in the space therebetween, a cooling tube is installed outside the regeneration tube, and a cooling coil is installed in the space therebetween. Arrangement of cooling coils and cooling tubes

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