KR101429977B1 - Engine for vacuum - Google Patents

Abstract

The present invention relates to a cooling device for cooling a gas and a cooling device which is interlocked with the cooler and supplies a gas introduced from a gas inlet provided at one side to the cooler and discharges the cooled gas discharged from the cooler to a gas outlet According to the present invention, there is provided a vacuum engine including a vacuum generator for generating power by a change in the volume of a gas according to a temperature change. According to the present invention, a change in volume of a flue gas discharged from a factory is induced, Ultimately, an effect of improving the recovery rate for the energy contained in the flue gas can be expected.

Description

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vacuum engine, and more particularly, to a vacuum engine that produces power by changing a volume of a gas according to a temperature change.

Industrial processes emit various types of exhaust gases, ranging in temperature from several tens to hundreds of degrees, and the pressure is typically maintained at atmospheric pressure. Since these exhaust gases have heat energy amounting to several tens of percent of the energy input to the industrial process, it is recognized that the recovery and reuse of this energy is an extremely important means in reducing the amount of energy consumption and reducing the global warming gas emission.

Conventionally, the heat of the exhaust gas is recovered in the form of heat energy and used as a heat source for heating or steam for industrial process. When there is no need for heat energy, the heat is mainly converted into electric power and reused.

Low-pressure steam power generation, organic Rankine cycle power generation, and Carina cycle power generation have been actually applied as conventional technologies for recovering the energy of the exhaust gas in the form of power. Such a conventional power generation cycle basically uses a separate liquid working fluid and belongs to a method of obtaining power by using a volume increase obtained when the high pressure liquid evaporates.

Therefore, in this method, a separate heat exchanger for transferring the heat of the exhaust gas to the working fluid must be provided, such as an evaporator, a turbine, a condenser, and a peripheral device for flow control, , Complex system configuration is required.

Furthermore, since the exhaust gas heat recovery heat exchanger must be inserted into the flue in which the exhaust gas flows, there are many restrictions in installation, which is a factor of lowering economy. For this reason, most of the heat of exhaust gas at high temperature is not recovered in actual industrial field.

Japanese Patent Publication No. 3929477 (published on Jun. 13, 2007)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems of the prior art. It is an object of the present invention to provide a method and apparatus for regenerating a flue gas discharged from a factory, And an improved device.

In order to achieve the above object, an embodiment of the present invention provides a vacuum engine as follows.

In one embodiment of the present invention, a cooler for cooling a gas and a gas introduced from a gas inlet disposed at one side are interlocked with the cooler, and the gas cooled by the cooler is discharged to a gas And a vacuum generator for discharging the gas to the discharge port and generating power by changing the volume of the gas according to the temperature change.

In one embodiment, the vacuum generator comprises a device housing in which the gas inlet and the gas outlet are respectively installed, a first cylinder connected to the gas inlet in the apparatus housing, a second cylinder connected to the gas outlet, A pair of pistons which are respectively disposed inside the two cylinders and move up and down according to a change in the volume of the gas and a pair of crank discs connected to the pair of pistons by connecting rods, And the pair of pistons may be configured to be installed at 180 ° intervals on the pair of crank discs, respectively.

In one embodiment, the vacuum generator further includes an opening / closing unit disposed between the gas inlet and the first cylinder or between the gas outlet and the second cylinder in the apparatus housing and controlling the flow of gas into and out of the apparatus housing, A sliding plate disposed in the moving groove and having an opening corresponding to the size of the gas inlet or the gas discharging port and a sliding plate disposed at one side of the moving groove and meshing with the sliding plate and pushing the sliding plate toward the other side of the moving groove An elastic body provided on the other side of the moving groove and in contact with the slidable plate, the elastic plate being provided to return the sliding plate to one side of the moving groove; .

In one embodiment, the vacuum generator may further include a flexible shaft portion connected between the crank disk and the rotation shaft of the drive cam, and driving the drive cam by turning the rotation of the crank disk.

One embodiment of the vacuum engine of the present invention has an effect of improving the recovery rate of the energy contained in the exhaust gas by inducing the volume change of the exhaust gas discharged from a factory or the like and by power recovery under a vacuum condition.

In addition, since it does not produce power using chemicals that emit pollutants, it can obtain relatively clean energy, and because it does not use limited resources such as natural gas and oil, the effect of conserving the earth resources can be expected have.

1 is a side cross-sectional view of one embodiment of a vacuum engine of the present invention.
2A and 2B are operation states of the opening and closing part in the invention shown in FIG.
FIG. 3A is an operational state view showing a state in which a hot gas is sucked in the invention shown in FIG.
FIG. 3B is an operational state diagram showing a state in which power is generated in a vacuum state by introducing and cooling a hot gas into a cooler in the invention shown in FIG. 3A.
3C is an operational state diagram showing a state of discharging the low-temperature gas in the invention shown in FIG. 3B.
FIG. 4 is a view illustrating another embodiment of the invention shown in FIG. 1 for transmitting power in a bevel gear mode instead of a flexible shaft.

In order to facilitate understanding of the features of the present invention, a vacuum engine according to an embodiment of the present invention will be described in detail.

In order to facilitate understanding of the embodiments described below, in the reference numerals shown in the accompanying drawings, the related components among the components that perform the same function in the respective embodiments are denoted by the same or an extension line number.

Embodiments related to the present invention are basically based on the induction of a change in the volume of a flue gas discharged from a factory or the like and a recovery of the flue gas under a vacuum.

Hereinafter, a specific embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a side cross-sectional view of one embodiment of a vacuum engine of the present invention.

Referring to FIG. 1, an embodiment of the vacuum engine according to the present invention includes a cooler 50 for cooling a gas and a cooler 50 interlocked with the cooler 50, and a gas introduced from a gas inlet 30 disposed at one side is introduced into the cooler 50), discharges the gas cooled in the cooler (50) to the gas outlet (40) disposed on the other side, and generates power by changing the volume of the gas according to the temperature change. As shown in FIG.

First, the gas inlet 30 may be connected to an exhaust gas discharge pipe in an industrial process. Since the exhaust gas is used in industrial processes and usually contains high-temperature energy, the exhaust gas flowing into the gas inlet 30 becomes a hot gas. At this time, the flue gas may be discharged at a final pressure of atmospheric pressure or higher at the final stage of the industrial process, or may be discharged to atmospheric pressure or higher through a separate device such as a blower and discharged.

In this embodiment, it is assumed that at least the exhaust gas flowing into the gas inlet 30 has a pressure to push the piston 61 to be discussed below and is connected to the exhaust gas discharge pipe in the industrial process to be discharged .

The cooler 50 preferably cools the gas to induce a volume change, but only to the extent that it maintains at least the gaseous state. The gas exhaust port 40 is connected to the atmosphere and is cooled in the cooler 50, and exhausted from the low temperature exhaust gas through the vacuum generator 100 to the atmosphere.

The vacuum generator 100 can control the volume change of the gas according to the temperature change due to the cooling process in the cooler 50 while the exhaust gas flows in the gas inlet 30 and is discharged to the gas outlet 40 It is converted into mechanical power to produce power.

The vacuum generator 100 may include an apparatus housing 20, first and second cylinders 21 and 22, a piston 61, and an interlocking disk 24.

First, the gas inlet 30 and the gas outlet 40 may be spaced apart from each other by a predetermined distance at an upper end of the apparatus housing 20. A first cylinder 21 connected to the gas inlet 30 and a second outlet 40 connected to the gas outlet 40 may be disposed inside the apparatus housing 20, respectively.

The pistons 61 are respectively disposed in the first and second cylinders 21 and 22 and may be provided to move up and down within the first and second cylinders 21 and 22 in accordance with the volume change of the gas. The lower ends of the pair of pistons 61 may be connected to the crank disk 65 by connecting rods 63, respectively.

The interlocking disc 24 may be disposed at an inner lower central portion of the apparatus housing 20 and may be positioned so as to be engaged with the pair of crank discs 65, respectively. In this case, the interlocking disc 24 and the pair of crank discs 65 may be formed with gear portions 67 that engage with each other in the circumferential direction.

At this time, the pair of pistons 61 may be installed on the pair of crank discs 65 at intervals of 180 degrees. In this case, one piston 61a descends and is connected to one piston 61a When the crank disk 65a on one side is operated, the crank disk 65b on the other side is operated by the interlocking disk 24 and the piston 61b on the other side connected to the crank disk 65b on the other side is raised.

That is, when the exhaust gas flows into the first cylinder 21 through the gas inlet 30, the exhaust gas pushes down the piston 61a on the one side disposed in the first cylinder 21 by the inflow pressure do.

When the piston 61a on one side is lowered, the crank disk 65a on one side connected to the lower end of the piston 61a on one side rotates, which rotates the interlocking disk 24.

As the interlocking disk 24 rotates, the crank disk 65b on the other side engaged with the interlocking disk 24 rotates. As a result, the piston 61b on the other side, which is connected to the crank disk 65b on the other side, Is raised inside the second cylinder (22).

That is, the pair of pistons 61 move in opposite directions.

The vacuum generator 100 is disposed between the gas inlet 30 and the first cylinder 21 or between the gas outlet 40 and the second cylinder 22 in the apparatus housing 20, And an opening / closing unit 70 for controlling the flow of the refrigerant gas.

This function closes the gas inlet 30 when the exhaust gas flowing into the first cylinder 21 through the gas inlet 30 is sent to the cooler inlet passageway 50a, When the flue gas introduced into the second cylinder 22 from the flue gas outlet 50 is sent to the gas outlet 40, the cooler outlet passage 50b is closed.

The opening and closing part 70 may include a sliding plate 71, a driving cam 73, and an elastic body 75.

The sliding plate 71 may be horizontally disposed on the moving groove 28 of the apparatus housing 20 integrally connected to the gas inlet 30 and the first cylinder 21. An opening 71a is formed on the sliding plate 71. The sliding plate 71 moves horizontally in the moving groove 28 and moves the position of the gas inlet 30 and the opening 71a The gas inlet 30 is opened or closed while matching or disagreement is made.

The driving cam 73 may be disposed in contact with one side of the sliding plate 71 in the extended portion 29 of the apparatus housing 20 connected to the moving groove 28. 2A and 2B, as the driving cam 73 rotates, the position of the opening 71a of the sliding plate 71 is changed to open and close the gas inlet 30.

Here, when the portion of the driving cam 73 contacting the one side of the sliding plate 71 is changed from a longer radius to a shorter radius, the other side of the sliding plate 71 An elastic body 75, which may be a coil spring, a disk spring, or the like, may be disposed between the moving grooves 28.

Of course, the above-described structure for opening and closing the gas discharging port 40 and the opening 71a by matching or disagreement is the same as described above.

On the other hand, when the rising and falling timing of the piston 61a on one side is made to coincide with the opening and closing timing of the gas inlet 30, that is, when the piston 61a on one side is lowered, the gas inlet 30 is opened, The vacuum generator 100 is connected between the crank disk 65a of one side and the rotary shaft of the drive cam 73 so that the gas inlet 30 is closed when the piston 61a of the crankshaft 65 rises, And a flexible shaft 80 for driving the drive cam 73 by turning the rotation of the crank disk 65a at one side.

Here, the flexible shaft portion 80 may be a known shaft, which can freely change the direction when transmitting power or the like. For example, both ends of the shaft may be provided with a structure in which power is transmitted to the crank disc 65a and the driving cam 73 by ball-joining the both ends of the shaft.

The first drive shaft 91 extending downward from the rotation shaft of the drive cam 73 and the gear portion of the crankshaft 65a of the one side crankshaft 65a 67 and a bevel gear 95 mounted on the ends of the first and second drive shafts 91, 93 so as to mesh with each other, have.

In this case, by adjusting the number of meshing gears of the bevel gear, the number of revolutions between the driving cam 73 and the crank disk may be adjusted to control the opening / closing timing of the opening 71a and the gas inlet 30.

Of course, the structure for adjusting the opening / closing timing while matching or disagreement between the gas outlet 40 and the opening 71a is the same as described above.

The configuration of an embodiment of the present invention is the same as described above, and an operation state will be described below.

FIG. 3A is an operation state view showing a state in which the high temperature gas is sucked in the invention shown in FIG. 1, FIG. 3B is a diagram showing an operation state in which the high temperature gas is introduced into the cooler and cooled Fig. 3A is an operational state diagram showing a state of discharging the cold gas in the invention shown in Fig. 3B. Fig.

First, referring to FIG. 3A, the exhaust gas flows into the first cylinder 21 through the gas inlet 30 connected to the exhaust gas discharge pipe of an industrial process. The exhaust gas flowing into the first cylinder 21 pushes down the piston 61a on one side and the piston 61a on one side and the connecting rod 63 move in the downward direction as the piston 61a on the one side is lowered, The crank disk 65a on one side is rotated by about 180 degrees.

As the crank disk 65a is rotated by 180 degrees, the driving cam 73 connected to the crank disk 65a and the flexible shaft 80 rotates 180 degrees. This allows the first large diameter portion of the drive cam 73 to abut against one side of the sliding plate 71 so as to be in contact with the first small diameter portion so that the opening portion 71a and the first gas inlet port 30 are inconsistent, The inlet 30 is closed.

At this time, the interlocking disk 24 connected to the crank disk 65a rotates and the crank disk 65b on the other side rotates. The piston 61b on the other side of the second cylinder 22 is moved upward.

Referring to FIG. 3B, since the upper end of the first cylinder 21 is always connected to the cooler inlet passage 50a, the exhaust gas flows into the cooler 50 along the cooler inlet passage 50a .

In this case, the cooler 50 cools the exhaust gas. At this time, the temperature of the exhaust gas changes from a high temperature to a low temperature, and ultimately a volume change occurs. As the volume of the exhaust gas changes in the cooler 50, a vacuum is temporarily formed, and the exhaust gas is further introduced into the cooler 50 from the first cylinder 21 in order to compensate for the vacuum state.

Accordingly, the exhaust gas inside the first cylinder 21 is reduced, and the piston 61a of the one side is raised inside the first cylinder 21. At this time, as the one piston 61a rises, the one crank disk 65a rotates and is transmitted to the other crank disk 65b by the interlocking disk 24, The piston 61b on the other side disposed inside is lowered.

As a result, the exhaust gas remaining in the cooler (50) flows into the second cylinder (22). That is, as the piston 61b on the other side descends, the exhaust gas in the cooler 50 is drawn.

 When the piston 61b of the other side is completely lowered, the piston 61a of one side is completely lifted up inside the first cylinder 21 and the driving cam 73 Is brought into contact with one side of the sliding plate 71 so that the positions of the opening 71a and the gas inlet 30 coincide with each other.

As a result, as shown in FIG. 3C, the exhaust gas flows back to the piston 61a of the one side to descend. Accordingly, the piston 61b on the other side is raised and the exhaust gas in the second cylinder 22 is discharged to the gas discharge port 40.

Of course, when the piston 61b of the other side rises, a longer radius of the drive cam 73 abuts on one side of the sliding plate 71 to open the gas outlet 40.

The above process is continuously opposed and the interlocking disk 24 is rotated to generate electricity by the power shaft connected to the interlocking disk 24. [

An embodiment of the present invention has the above-described configuration and operating state and induces a volume change in accordance with a temperature change of an exhaust gas discharged from a factory or the like, and by power recovery under a vacuum state, ultimately, Can be improved.

The above matters are only specific examples of the vacuum engine.

Therefore, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. do.

20 ... device housing 21, 22 ... first and second cylinder portions
24 ... interlocking disk 28 ... moving groove
29 ... elongated portion 30 ... gas inlet
40 ... gas outlet 50 ... cooler
50a ... cooler inlet passage 50b ... cooler outlet passage
61a, 61b ... piston 63 ... connecting rod
65a, 65b ... crank disk 67 ... gear portion
70 ... opening and closing part 71 ... sliding plate
71a ... opening 73 ... drive cam
75 ... elastic body 80 ... flexible main portion
91 ... first drive shaft 93 ... second drive shaft
95 ... Bevel gear 100 ... Vacuum generator

Claims (4)

A cooler for cooling the gas; And
The gas introduced from the gas inlet disposed at one side is supplied to the cooler, the gas discharged from the cooler cooled by the cooler is discharged to the gas discharge port disposed at the other side, and the volume change of the gas And a vacuum generator for generating power by the vacuum pump,
Wherein the vacuum generator comprises:
A device housing in which the gas inlet and the gas outlet are respectively installed at an upper portion;
A first cylinder connected to the gas inlet in the apparatus housing and a second cylinder connected to the gas outlet;
A pair of pistons arranged inside the first and second cylinders and moving up and down according to a change in the volume of the gas; And
An interlocking disk rotatably engaged with a pair of crank disks connected to the pair of pistons by connecting rods and producing power;
. ≪ / RTI >
The method according to claim 1,
Wherein the pair of pistons are installed at 180 DEG intervals on the pair of crank discs.
3. The method of claim 2,
Wherein the vacuum generator comprises:
And an opening / closing unit disposed between the gas inlet and the first cylinder or between the gas outlet and the second cylinder in the apparatus housing and controlling the flow of gas into and out of the apparatus housing,
A sliding plate disposed in a moving groove of the apparatus housing and having an opening corresponding to the size of the gas inlet or the gas outlet;
A driving cam which is disposed at one side of the moving groove and engages with the sliding plate and pushes the sliding plate to the other side of the moving groove so that the opening and the gas inlet or the gas discharging opening are aligned; And
An elastic body disposed on the other side of the moving groove and in contact with the slidable plate, the elastic plate being provided to return the sliding plate to one side of the moving groove;
The vacuum engine comprising:
The method of claim 3,
Wherein the vacuum generator comprises:
And a flexible shaft connected between the crank disk and the rotation shaft of the drive cam, and driving the drive cam by changing the direction of rotation of the crank disk.

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