KR101693123B1 - Valve opening and closing apparatus for engine - Google Patents

Abstract

Since the valve is configured to allow the engine to rotate while the valve is rotating through the intake and exhaust processes of the compressed air in two strokes, the intake and exhaust operations can be switched directly, So as to obtain an effect similar to that of an actual engine.
Further, according to the present invention, such a valve opening / closing device can be assembled and assembled using a 3D printer, so that anyone can easily and quickly use the opening / closing device by assembling and using, Another object is to provide a valve opening / closing device for an engine that can be mass-produced in a quick and accurate shape.

Description

VALVE OPENING AND CLOSING APPARATUS FOR ENGINE -

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine, and more particularly, to a valve opening / closing device capable of stably and rotating at high speed in a two-stroke manner by sucking and exhausting compressed air.

An engine is a mechanical device that converts heat energy into mechanical energy and supplies it to the outside. It can be roughly classified into a heat engine, an internal combustion engine, and a motor. In particular, since the engine needs to burn fossil fuel to obtain power, it is made of materials that can withstand high temperatures and high pressures. These engines are used as power generation devices in real cars, generators and various industries.

On the other hand, in order to easily understand the internal structure and the operating principle of such an engine in schools and industrial sites, an educational engine is manufactured and used as in Patent Documents 1 to 3.

(Patent Document 1) Korea Registration Practice  No. 0445670

The present invention relates to a training Stirling engine for assisting an understanding of a Stirling engine, including: an operation piston which receives a heat source and reciprocates linearly by expansion and contraction of air; A flywheel connected to the operation piston to store reciprocating linear motion of the operation piston as rotational kinetic energy; A power piston connected to the flywheel and driven by rotational motion of the flywheel and communicating with the operating piston; A frame in which the operation piston, the flywheel and the power piston are installed; And a lamp for supplying a heat source to the operation piston. This is an educational Stirling engine which is made of a transparent glass material in which the cylinder can see the inside and is attached to a rotating vane to show the inside and understand the principle.

(Patent Document 2) Korean Patent Publication No. 10-2010-0115125

CRDI diesel engine control system training equipment. It is possible to artificially control and diagnose the signal values of the sensors constituting the CRDI diesel engine control system, while studying the operation of the main components of the CRDI diesel engine control system. The present invention relates to a CRDI diesel engine control system educational device capable of maximizing the functional and technical education effects in addition to the theoretical understanding of the CRDI diesel engine control system by easily installing the CRDI diesel engine control system on a flat panel.

(Patent Document 3) Korea Public Practice  No. 20-2011-0007490

The present invention relates to a display device for an educational engine, and more particularly, to a display device for an educational engine which displays an easy understanding of the basic concepts of the engine, ≪ / RTI >

However, the following problems arise in the engine used for the purpose of existing learning or the like.

(1) Most of the existing engines are manufactured in the form of four-stroke engines leading to the suction-compression-explosion-exhaust sequence. Therefore, it is difficult to accurately implement the four-stroke order engine.

(2) That is, the four-stroke engine mixes air and fuel and then explodes them to obtain the power required for actual driving. However, since the explosion process can not be implemented in the existing engine, there is a limitation in showing the accurate engine driving state.

(3) Also, if an engine that works like an actual engine is required, such as a radio control car, such an existing engine can not be used. Accordingly, since a large number of motors are used as a power generating means such as an engine, there is a limit to realizing an operation like an actual engine.

(4) On the other hand, a four-stroke sequence is performed by using a fluid such as compressed air as a working fluid. In this case, since the number of rotations through each process is low, .

Korean Registration Practical Work No. 0445670 (Registered on August 17, 2009) Korean Patent Publication No. 10-2010-0115125 (published on October 27, 2010) Korean Published Utility Application No. 20-2011-0007490 (published on July 27, 2011)

The present invention takes this point into consideration and constitutes a valve so that the engine can rotate while the valve rotates through intake and exhaust processes in the form of two strokes of compressed air so that the structure is simple and the intake and exhaust operations are directly switched And it is an object of the present invention to provide an engine valve opening / closing apparatus which can rotate at a high speed and obtain the same effect as an actual engine.

Further, according to the present invention, such a valve opening / closing device can be assembled and assembled using a 3D printer, so that anyone can easily and quickly use the opening / closing device by assembling and using, Another object is to provide a valve opening / closing device for an engine that can be mass-produced in a quick and accurate shape.

In order to achieve the above object, an engine valve opening / closing apparatus according to the present invention includes a cylinder head (100) mounted on a cylinder block and adapted to reciprocate a piston by supplying compressed air to the cylinder block Two mounting spaces 120a and 120b formed at an inner middle portion thereof through the partition 121; A first hole (130a) and a second hole (130b) formed through the cylinder formed in the cylinder block and the respective mounting spaces (120a, 120b) to communicate with each other; The flow path 141 is formed on the outer periphery of the second valve 150 and is rotated in one mounting space 120a to open and close the first hole 130a, A first valve (140) rotatably mounted to the fixing support plate (143) through a shaft that is connected and the other is powered; The flow path 151 is formed on the outer circumference and is rotated in the remaining mounting space 120b so as to open and close the second hole 130b and to be connected to the first valve 140 adjacent to the one side through the partition wall, A second valve 150 mounted with a timing gear 170 connected to the crankshaft via a support plate 153; When the first valve 140 and the second valve 150 rotate and the first and second holes 130a and 130b are exposed repeatedly through the flow paths 141 and 151, Two compressed air passages 160a and 160b; And the compressed air paths 160a and 160b and the cylinder head 100 are connected to each other in the rotational direction of the valves 140 and 150 and overlapped with the flow paths 141 and 151 And a cylinder head side flow path (161a, 161b) for controlling the opening and closing timing of the valves (140, 150) through the first hole (140a, 150b) The discharge hole 122 is formed in the closed section of the intake valve by blocking the first valve 130a so that the amount of compressed air leaking into the gap between the cylinder head 100 and the first valve 140 can be reduced .

Particularly, the first valve 140 has a first fitting protrusion 142 for fitting one end of the first valve 140 through the partition 121 and a second supporting protrusion 142 for fixing the other end of the first valve 140 to the inlet of the fitting space 120a. The second valve 150 is formed with a recess 152 so as to fit the first fitting protrusion 142 on one side and the inlet 152 of the mounting space 120b is formed on the other side of the second valve 150, The second fitting protrusions 154 protrude through the support plate 153 fixed to the first fitting protrusions 154 so that the protrusions of the first fitting protrusions 154 and the second fitting protrusions 154 are protruded, And a timing gear 170 for controlling the opening and closing of the cylinder head 150. The cylinder head 100 is made of a 3D printer.

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Lastly, the first hole 130a and the second hole 130b are formed so as to communicate with the intake and exhaust space 110 formed in the cylinder head 100 in contact with the cylinder.

The valve opening / closing apparatus for an engine according to the present invention has the following effects.

(1) Since the power is obtained by the two-stroke method, the structure is simple and can be easily manufactured. In particular, the rotational force can be obtained through intake and exhaust, and the rotational speed can be increased.

(2) As the number of revolutions increases, it can be applied not only to existing education but also to devices requiring actual engine power such as a radio controlled car (RC car) or a toy car driven by a motor. In addition, it can be utilized for industrial use. In this case, the working fluid is operated by utilizing pulmonary steam.

(3) Since necessary parts are manufactured using 3D printer, necessary parts can be manufactured and used easily and quickly.

(4) In addition, since the parts used in the valve opening / closing apparatus according to the present invention can be easily assembled by hand and can be quickly assembled by hand, anybody can easily assemble or replace damaged parts or the like.

1 is a perspective view for showing an engine valve opening / closing apparatus according to the present invention;
FIG. 2 is a bottom perspective view showing an engine valve opening / closing apparatus according to the present invention. FIG.
3 is a plan view showing an overall shape of a cylinder head according to the present invention.
4 is an exploded perspective view showing the internal configuration of an engine valve opening / closing apparatus according to the present invention.
5A and 5B are diagrams showing the state before and after the engagement of the valve with the cylinder head cut along the line AA of Fig. 4, Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.

(Configuration)

The valve opening and closing apparatus for an engine according to the present invention is provided with an intake and exhaust device space 110, mounting spaces 120a and 120b, a first hole 130a and a second hole 130b, as shown in Figs. A cylinder head 100 including a first valve 140, a second valve 150, compressed air passages 160a and 160b, and a timing gear 170.

In particular, in the present invention, the first valve 140, the second valve 150, and the timing gear 170, which are configured not to be integrally formed with the cylinder head 100, So that it can be easily assembled and used in a simple structure, and maintenance can be easily performed over time.

Further, since the valves 140 and 150 are configured to be rotatable using compressed air in a two-stroke system, the valve can be opened and closed easily and quickly. In particular, the compressed air from low pressure to high pressure can be used, Speed range from low speed to high speed, so that it can be used in a place where real power such as a toy car driven by a radio-controlled car and a motor as well as industrial and educational purposes can be obtained.

In addition, since the present invention can be manufactured using a 3D printer, the present invention can be easily and quickly manufactured, and can be precisely manufactured and used.

Hereinafter, this configuration will be described in more detail.

The intake and exhaust system space 110 refers to a space in which the compressed air sucked when the cylinder head 100 is mounted on a cylinder block (not shown) as shown in FIG. 2 and FIG. 4 and FIG. This intake and exhaust space 110 creates an exhaust space until the piston mounted on the cylinder block reaches the top dead center and makes the intake space until the piston reaches the bottom dead center with the pressure of the incoming compressed air .

The mounting spaces 120a and 120b are formed by mounting two first valves 140 and second valves 150 to be described later and rotating the first and second valves 140 and 150 as shown in FIG. 2 and FIG. 4 and FIG. It is space to make. The first valve 140 and the second valve 150 can be mounted or dismounted. The first valve 140 and the second valve 150 can be mounted or dismounted, .

For this, the mounting spaces 120a and 120b are formed by penetrating the cylinder head 100 to one side and the first and second valves 140 and 150, respectively, And a partition wall 121 is formed at an intermediate portion of the through-hole to divide the two mounting spaces 120a and 120b. At this time, the partition 121 has a through hole 121a formed at the center thereof to provide a space for allowing the first valve 140 and the second valve 150 to rotate simultaneously.

In a preferred embodiment of the present invention, one of the mounting spaces 120a and 120b, which is used as the intake side, for example, one of the mounting spaces 120a, Similarly, the discharge hole 122 is formed so that the compressed air therein can be discharged to the outside. At this time, the mounting space 120a is a space used for the intake side, and the first valve 140 is used as an intake valve. When the exhaust valve 122 is closed by the intake valve (the first valve 140), the first valve 140 closes the first hole 130a and flows into the compressed air passage 160a And is formed in a section where compressed air can not be supplied to the cylinder through the mounting space 120a. Therefore, the high-pressure compressed air that has entered the mounting space 120a, which is the intake space, while the first valve 140 blocks the first hole 130a and the valve is closed to perform the exhaust operation, is supplied to the cylinder head 100 and the first valve 140 of the cylinder head 100. However, the present invention prevents the high-pressure compressed air from being discharged to the outside of the cylinder head 100 through the discharge hole 122 to enter the cylinder. Accordingly, the high-pressure compressed air enters the cylinder to prevent the exhaust operation from being hindered, so that the intake and exhaust operation can be smoothly performed, and the rotary load can be reduced while the rotational force is increased, thereby stably and smoothly opening and closing the valve.

The first hole 130a and the second hole 130b are formed so as to connect the above-described intake and exhaust space 110 and the mounting spaces 120a and 120b, as shown in FIG. 2 and FIG. As the first valve 140 and the second valve 150 rotate, one of the first hole 130a and the second hole 130b is blocked and the other is opened, so that the intake and exhaust actions can be performed In order to make it possible.

The first valve 140 is installed to be rotatable by being fitted in the above-mentioned one mounting space 120a, as shown in Figs. 4 and 5. Fig. To this end, a first fitting protrusion 142 is formed on one side of the first valve 140 so as to be inserted into the partition 121, and a second fitting protrusion 142 is formed on the other side of the first valve 140, (143).

In the preferred embodiment of the present invention, the first fitting protrusion 142 passes through the partition wall 121 in the longitudinal direction, that is, as it is fitted in the mounting space 120a, It is preferable that they are configured so as to be fitted in the recessed grooves 152 and to be combined with each other so that they can be directly engaged without a tool.

Particularly, in the first valve 140, as shown in Figs. 4 and 5, a flow path 141 is formed on the outer periphery. The flow path 141 provides a path for blocking or opening the first hole 130a as the first valve 140 rotates in the mounting space 120a. Such a flow path 141 is formed in such a manner as to open and close the hole 141 according to the size of the flow path 141, preferably along the circumference of the valve, as the valve 151 rotates as the valve 151 rotates It will be readily apparent to those skilled in the art that a valve can be manufactured with different controllability.

The second valve 150 has a flow path 151 formed on its outer periphery as shown in Figs. 4 and 5. The flow path 151 opens and closes the second hole 130b when the first valve 150 rotates in the mounting space 120b.

The second valve 150 protrudes and forms a second fitting protrusion 154 so as to be rotatably supported on one side. Here, the second fitting protrusion 154 has the same structure as the first fitting protrusion 142 described above, but is mounted so as to protrude outward through the supporting plate 153 closing the end of the fitting space 120b, .

In addition, the second valve 150 is provided with a groove 152 in a different configuration from the first valve 140. The recess 152 is a portion where the first fitting protrusion 142 is fitted and fitted. The first fitting protrusion 142 protruding from the partition wall 121 is inserted.

The second valve 150 thus constructed is configured such that the first valve 140 is installed in one installation space 120a and the second valve 140 is installed in the remaining installation space 120b as shown in Figure 5 (a) Each is assembled into one. At this time, the first valve (140) engages with the first fitting protrusion (142) while the second valve (150) is assembled by inserting the groove (152) inside.

The first valve 140 and the second valve 150 are arranged such that the flow paths 141 and 151 are arranged at an angle of 180 ° so that the first hole 130a and the second hole 130b It is preferable that the other is closed. Of course, such a forming angle may be formed larger or smaller.

The compressed air passages 160a and 160b are formed one by one in the two mounting holes 120a and 120b as shown in FIGS. 1 to 5, and the first valve 140 and the second valve 150 So that the compressed air can be sucked into the intake and exhaust space 110 and exhaled to the outside.

The configuration of the compressed air passages 160a and 160b is such that any one of the compressed air passageways 160a is connected to the intake and exhaust manifold through the oil passageway 141 as in the configuration of the intake manifold and the exhaust manifold mounted on the cylinder head of an actual automobile, The other compressed air passage 160b discharges the compressed air that has entered the suction and discharge space 110 through the other flow passage 151. As a result,

Lastly, as shown in FIG. 5, the compressed air passages 160a and 160b are respectively connected to the cylinder head 100, that is, the first valve 140 and the second valve 150 rotate And cylinder head side oil passages 161a and 161b are formed so as to overlap with the oil passages 141 and 151, respectively. At this time, the cylinder head side oil passages 161a and 161b are formed in a shape finer in the rotational direction of the first valve 140 and the second valve 150. [ The cylinder head side oil passage 161a and the cylinder head side oil passage 161b can be formed differently from each other depending on the length and angle of the fine groove so that the first valve 140 and the second valve 150 ) Is controlled. That is, the timing at which the cylinder head side oil passages 161a and 161b start from the compressed air passages 160a and 160b and the start and end positions of the oil passages 141 and 151 are cam angles, The timing and amount of compressed air introduced into the cylinder are determined. Therefore, the cylinder head side oil passages 161a and 161b and the oil passages 141 and 151 can control the inflow timing and inflow amount of the compressed air flowing into the cylinder depending on the start position and the end position.

The timing gear 170 rotates together with the second valve 150 and the two first valves 140 and the second valve 150 rotate together as shown in FIG. 1, FIG. 2, Quot; a "

The timing gear 170 is installed so as to be rotatable together with the valve on the second fitting protrusion 154 protruding outside the mounting space 120b through the support plate 153 described above.

The timing gear 170 is connected to a crankshaft rotated by a piston operation and rotates together with the first valve 140 and the second valve 150 using the rotational force, So that an intake action to supply and an exhaust action to shut off are performed.

The valve opening and closing apparatus for an engine according to the present invention as described above is configured such that two first valves 140 and a second valve 150 are sandwiched by a cylinder head 100 having a single block shape, Can be used.

In particular, the present invention is configured such that the opening / closing device constructed as described above is configured to move in a two-stroke manner, so that the structure is simple and the actual number of revolutions is increased to provide not only a general learning tool, but also a power tool such as a toy car that uses a radio- It is possible to apply the present invention to an apparatus that generates a light.

In addition, since the present invention can be constructed by using a 3D printer and then assembled and used without a tool, the structure is simple and easy to assemble, disassemble, and maintain at any time and anywhere.

It will be apparent to those skilled in the art that the present invention can be manufactured in a variety of materials such as plastic or metal in consideration of the number of revolutions and the like. In addition, although the present invention is shown in the form of a single cylinder, it is easily understood by those skilled in the art that a plurality of such structures may be formed continuously or a plurality of individual open / close mechanisms may be continuously connected to each other .

On the other hand, in the present invention, driving compressed air is used, but the present invention is not limited thereto. That is, any working fluid can be used as long as it is a fluid having a predetermined pressure such as artificially compressed air as well as industrial steam.

100: cylinder head 110: intake and exhaust space
120a, 120b: mounting space 121: partition wall
122: discharge hole 130a: first hole
130b: second hole 140: first valve
141: channel 142: first fitting projection
143: Finishing plate 150: Second valve
151: Euro 152: yo home
153: support plate 154: second fitting projection
160a, 160b: compressed air 161a, 161b: cylinder head side oil passage
170: timing gear

Claims (4)

And a cylinder head (100) mounted on the cylinder block and adapted to reciprocate the piston by receiving compressed air from the outside,
Two mounting spaces (120a, 120b) formed through the cylinder head (100) through one side and separated through a partition wall (121) in an inner middle portion; A first hole (130a) and a second hole (130b) formed through the cylinder formed in the cylinder block and the respective mounting spaces (120a, 120b) to communicate with each other; The flow path 141 is formed on the outer periphery of the second valve 150 and is rotated in one mounting space 120a to open and close the first hole 130a, A first valve (140) rotatably mounted to the fixing support plate (143) through a shaft that is connected and the other is powered; The flow path 151 is formed on the outer circumference and is rotated in the remaining mounting space 120b so as to open and close the second hole 130b and to be connected to the first valve 140 adjacent to the one side through the partition wall, A second valve 150 mounted with a timing gear 170 connected to the crankshaft via a support plate 153; When the first valve 140 and the second valve 150 rotate and the first and second holes 130a and 130b are exposed repeatedly through the flow paths 141 and 151, Two compressed air passages 160a and 160b; And the compressed air paths 160a and 160b and the cylinder head 100 are connected to each other in the rotational direction of the valves 140 and 150 and overlapped with the flow paths 141 and 151 Cylinder-side flow paths (161a, 161b) for regulating the opening and closing timing of the valves (140, 150) through the degree of opening ; Lt; / RTI >
In the mounting space 120a, the first valve 140 acting as an air intake member closes the first hole 130a, and the discharge hole 122 is formed in a section where the intake valve is closed, so that the compressed air flows into the cylinder Wherein the valve opening / closing device for the engine is configured to reduce the amount of exhaust gas.
The method according to claim 1,
The first valve 140 is formed with a first fitting protrusion 142 so that one end of the first valve 140 is inserted through the partition 121 and the other end of the first valve 140 is connected to a supporting plate 143 fixed to the inlet of the mounting space 120a. Mounted,
The second valve 150 has a recess 152 formed in one side thereof to fit the first fitting protrusion 142 and a second valve 150 formed in the other side of the second valve 150 to be rotatably supported on a support plate 153 fixed to an inlet of the fitting space 120b. So that the second fitting protrusion 154 is protruded,
A timing gear 170 for controlling opening and closing of the first valve 140 and the second valve 150 is mounted on a protruding portion of the second fitting protrusion 154,
Wherein the cylinder head (100) is made of a 3D printer.
delete The method according to claim 1,
The first hole (130a) and the second hole (130b)
Is formed so as to communicate with the intake and exhaust space (110) formed in the cylinder head (100) portion so as to be in contact with the cylinder.

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